CN106801056A - 一种sgRNA及其构建的慢病毒载体和应用 - Google Patents
一种sgRNA及其构建的慢病毒载体和应用 Download PDFInfo
- Publication number
- CN106801056A CN106801056A CN201710054835.9A CN201710054835A CN106801056A CN 106801056 A CN106801056 A CN 106801056A CN 201710054835 A CN201710054835 A CN 201710054835A CN 106801056 A CN106801056 A CN 106801056A
- Authority
- CN
- China
- Prior art keywords
- sgrna
- slow virus
- cells
- siv
- cas9
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241000700605 Viruses Species 0.000 title claims abstract description 33
- 108091027544 Subgenomic mRNA Proteins 0.000 title claims abstract description 15
- 102100031650 C-X-C chemokine receptor type 4 Human genes 0.000 claims abstract description 22
- 239000002773 nucleotide Substances 0.000 claims abstract 4
- 125000003729 nucleotide group Chemical group 0.000 claims abstract 4
- 210000004027 cell Anatomy 0.000 claims description 58
- 239000000203 mixture Substances 0.000 claims description 22
- 101000922348 Homo sapiens C-X-C chemokine receptor type 4 Proteins 0.000 claims description 20
- 101710149870 C-C chemokine receptor type 5 Proteins 0.000 claims description 19
- 239000013612 plasmid Substances 0.000 claims description 18
- 102100035875 C-C chemokine receptor type 5 Human genes 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 9
- 101150038500 cas9 gene Proteins 0.000 claims description 6
- 210000004962 mammalian cell Anatomy 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 230000029087 digestion Effects 0.000 claims description 4
- 238000012408 PCR amplification Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 239000000969 carrier Substances 0.000 claims 5
- 229940124321 AIDS medicine Drugs 0.000 claims 1
- 108091033409 CRISPR Proteins 0.000 abstract description 49
- 238000010354 CRISPR gene editing Methods 0.000 abstract description 21
- 241000282560 Macaca mulatta Species 0.000 abstract description 13
- 108090000623 proteins and genes Proteins 0.000 abstract description 11
- 238000003209 gene knockout Methods 0.000 abstract description 10
- 101150017501 CCR5 gene Proteins 0.000 abstract description 9
- 238000001415 gene therapy Methods 0.000 abstract description 7
- 238000011160 research Methods 0.000 abstract description 6
- 238000010459 TALEN Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 101150066398 CXCR4 gene Proteins 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010362 genome editing Methods 0.000 abstract description 3
- 101000910035 Streptococcus pyogenes serotype M1 CRISPR-associated endonuclease Cas9/Csn1 Proteins 0.000 abstract description 2
- 108010043645 Transcription Activator-Like Effector Nucleases Proteins 0.000 abstract 1
- 208000007778 simian acquired immunodeficiency syndrome Diseases 0.000 abstract 1
- 239000013598 vector Substances 0.000 description 27
- 241000713666 Lentivirus Species 0.000 description 23
- 239000002609 medium Substances 0.000 description 23
- 241000282693 Cercopithecidae Species 0.000 description 22
- 210000001744 T-lymphocyte Anatomy 0.000 description 22
- 210000003958 hematopoietic stem cell Anatomy 0.000 description 19
- 108020004414 DNA Proteins 0.000 description 18
- 239000011324 bead Substances 0.000 description 16
- 239000006228 supernatant Substances 0.000 description 16
- 239000000243 solution Substances 0.000 description 14
- 241000713772 Human immunodeficiency virus 1 Species 0.000 description 9
- 238000001890 transfection Methods 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 8
- 241000282414 Homo sapiens Species 0.000 description 8
- 208000015181 infectious disease Diseases 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 208000030507 AIDS Diseases 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000000338 in vitro Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 108091032973 (ribonucleotides)n+m Proteins 0.000 description 6
- 229920000209 Hexadimethrine bromide Polymers 0.000 description 6
- 241000282412 Homo Species 0.000 description 6
- 150000007523 nucleic acids Chemical group 0.000 description 6
- 238000010790 dilution Methods 0.000 description 5
- 239000012895 dilution Substances 0.000 description 5
- 210000003819 peripheral blood mononuclear cell Anatomy 0.000 description 5
- 230000008685 targeting Effects 0.000 description 5
- 230000010415 tropism Effects 0.000 description 5
- 230000009385 viral infection Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 101710163270 Nuclease Proteins 0.000 description 4
- 108091028043 Nucleic acid sequence Proteins 0.000 description 4
- 108010017070 Zinc Finger Nucleases Proteins 0.000 description 4
- 239000013604 expression vector Substances 0.000 description 4
- 238000012239 gene modification Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 102000053602 DNA Human genes 0.000 description 3
- 108091029865 Exogenous DNA Proteins 0.000 description 3
- 208000031886 HIV Infections Diseases 0.000 description 3
- 241000725303 Human immunodeficiency virus Species 0.000 description 3
- 239000012124 Opti-MEM Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 239000008280 blood Substances 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000001502 gel electrophoresis Methods 0.000 description 3
- 239000001963 growth medium Substances 0.000 description 3
- 230000003394 haemopoietic effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 238000012163 sequencing technique Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 241000203069 Archaea Species 0.000 description 2
- 108091026890 Coding region Proteins 0.000 description 2
- 239000006144 Dulbecco’s modified Eagle's medium Substances 0.000 description 2
- 102100031573 Hematopoietic progenitor cell antigen CD34 Human genes 0.000 description 2
- 101000777663 Homo sapiens Hematopoietic progenitor cell antigen CD34 Proteins 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 108091028113 Trans-activating crRNA Proteins 0.000 description 2
- 102000004142 Trypsin Human genes 0.000 description 2
- 108090000631 Trypsin Proteins 0.000 description 2
- 108091093126 WHP Posttrascriptional Response Element Proteins 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- AVKUERGKIZMTKX-NJBDSQKTSA-N ampicillin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@H]3SC([C@@H](N3C2=O)C(O)=O)(C)C)=CC=CC=C1 AVKUERGKIZMTKX-NJBDSQKTSA-N 0.000 description 2
- 229960000723 ampicillin Drugs 0.000 description 2
- 210000001185 bone marrow Anatomy 0.000 description 2
- 230000001684 chronic effect Effects 0.000 description 2
- 239000012228 culture supernatant Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002068 genetic effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000006780 non-homologous end joining Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 210000002966 serum Anatomy 0.000 description 2
- FLNVBBPBGKOJHN-KKAOYSRWSA-N sivmac Chemical compound O=C([C@H](C)NC(=O)[C@H](CO)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@@H]1CCCN1C(=O)[C@H](C)NC(=O)[C@H](C)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@H](CO)NC(=O)[C@H](CO)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)CNC(=O)[C@H](CC=1C2=CC=CC=C2NC=1)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CC(O)=O)NC(=O)[C@@H](NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CO)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CC(N)=O)NC(=O)[C@H](CS)NC(=O)[C@@H](N)CCCNC(N)=N)[C@@H](C)O)[C@@H](C)O)[C@@H](C)O)[C@@H](C)O)[C@@H](C)CC)N1CCC[C@H]1C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(O)=O FLNVBBPBGKOJHN-KKAOYSRWSA-N 0.000 description 2
- 239000008223 sterile water Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 239000012588 trypsin Substances 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 241000701161 unidentified adenovirus Species 0.000 description 2
- 102000040650 (ribonucleotides)n+m Human genes 0.000 description 1
- 208000031261 Acute myeloid leukaemia Diseases 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 108090000695 Cytokines Proteins 0.000 description 1
- 102000004127 Cytokines Human genes 0.000 description 1
- 238000007400 DNA extraction Methods 0.000 description 1
- 108010008532 Deoxyribonuclease I Proteins 0.000 description 1
- 102100030012 Deoxyribonuclease-1 Human genes 0.000 description 1
- 241000702421 Dependoparvovirus Species 0.000 description 1
- 101710149498 Double-stranded DNA-binding protein Proteins 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 208000030453 Drug-Related Side Effects and Adverse reaction Diseases 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 102100020715 Fms-related tyrosine kinase 3 ligand protein Human genes 0.000 description 1
- 101710162577 Fms-related tyrosine kinase 3 ligand protein Proteins 0.000 description 1
- 108010017080 Granulocyte Colony-Stimulating Factor Proteins 0.000 description 1
- 102000004269 Granulocyte Colony-Stimulating Factor Human genes 0.000 description 1
- 108020005004 Guide RNA Proteins 0.000 description 1
- 101710135007 Histone-like protein p6 Proteins 0.000 description 1
- 101000914514 Homo sapiens T-cell-specific surface glycoprotein CD28 Proteins 0.000 description 1
- 206010061598 Immunodeficiency Diseases 0.000 description 1
- 208000029462 Immunodeficiency disease Diseases 0.000 description 1
- 108010002386 Interleukin-3 Proteins 0.000 description 1
- 108090001005 Interleukin-6 Proteins 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 208000033776 Myeloid Acute Leukemia Diseases 0.000 description 1
- 108700026244 Open Reading Frames Proteins 0.000 description 1
- 108020002230 Pancreatic Ribonuclease Proteins 0.000 description 1
- 102000005891 Pancreatic ribonuclease Human genes 0.000 description 1
- 208000037581 Persistent Infection Diseases 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 238000011529 RT qPCR Methods 0.000 description 1
- 102100027213 T-cell-specific surface glycoprotein CD28 Human genes 0.000 description 1
- GLNADSQYFUSGOU-GPTZEZBUSA-J Trypan blue Chemical compound [Na+].[Na+].[Na+].[Na+].C1=C(S([O-])(=O)=O)C=C2C=C(S([O-])(=O)=O)C(/N=N/C3=CC=C(C=C3C)C=3C=C(C(=CC=3)\N=N\C=3C(=CC4=CC(=CC(N)=C4C=3O)S([O-])(=O)=O)S([O-])(=O)=O)C)=C(O)C2=C1N GLNADSQYFUSGOU-GPTZEZBUSA-J 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000011316 allogeneic transplantation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002259 anti human immunodeficiency virus agent Substances 0.000 description 1
- 230000000840 anti-viral effect Effects 0.000 description 1
- 230000002155 anti-virotic effect Effects 0.000 description 1
- 238000011225 antiretroviral therapy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002960 bfu-e Anatomy 0.000 description 1
- 230000027455 binding Effects 0.000 description 1
- 210000000601 blood cell Anatomy 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000006143 cell culture medium Substances 0.000 description 1
- 108091092356 cellular DNA Proteins 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 210000002791 cfu-m Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010367 cloning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005782 double-strand break Effects 0.000 description 1
- 102000022788 double-stranded DNA binding proteins Human genes 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000012636 effector Substances 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 210000002308 embryonic cell Anatomy 0.000 description 1
- 239000002158 endotoxin Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003013 erythroid precursor cell Anatomy 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000799 fluorescence microscopy Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 108020001507 fusion proteins Proteins 0.000 description 1
- 102000037865 fusion proteins Human genes 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 230000005017 genetic modification Effects 0.000 description 1
- 235000013617 genetically modified food Nutrition 0.000 description 1
- 230000036449 good health Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007813 immunodeficiency Effects 0.000 description 1
- 230000002163 immunogen Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 210000005087 mononuclear cell Anatomy 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000037125 natural defense Effects 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 210000005259 peripheral blood Anatomy 0.000 description 1
- 239000011886 peripheral blood Substances 0.000 description 1
- 210000004976 peripheral blood cell Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001566 pro-viral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 108010056030 retronectin Proteins 0.000 description 1
- 239000012679 serum free medium Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- YEENEYXBHNNNGV-XEHWZWQGSA-M sodium;3-acetamido-5-[acetyl(methyl)amino]-2,4,6-triiodobenzoate;(2r,3r,4s,5s,6r)-2-[(2r,3s,4s,5r)-3,4-dihydroxy-2,5-bis(hydroxymethyl)oxolan-2-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound [Na+].CC(=O)N(C)C1=C(I)C(NC(C)=O)=C(I)C(C([O-])=O)=C1I.O[C@H]1[C@H](O)[C@@H](CO)O[C@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 YEENEYXBHNNNGV-XEHWZWQGSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 210000000130 stem cell Anatomy 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000009261 transgenic effect Effects 0.000 description 1
- 238000011269 treatment regimen Methods 0.000 description 1
- 238000005199 ultracentrifugation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
- C12N15/113—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
- A61K48/0008—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'non-active' part of the composition delivered, e.g. wherein such 'non-active' part is not delivered simultaneously with the 'active' part of the composition
- A61K48/0025—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'non-active' part of the composition delivered, e.g. wherein such 'non-active' part is not delivered simultaneously with the 'active' part of the composition wherein the non-active part clearly interacts with the delivered nucleic acid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
- A61K48/005—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'active' part of the composition delivered, i.e. the nucleic acid delivered
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/85—Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
- C12N15/86—Viral vectors
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N7/00—Viruses; Bacteriophages; Compositions thereof; Preparation or purification thereof
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2310/00—Structure or type of the nucleic acid
- C12N2310/10—Type of nucleic acid
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2740/00—Reverse transcribing RNA viruses
- C12N2740/00011—Details
- C12N2740/10011—Retroviridae
- C12N2740/15011—Lentivirus, not HIV, e.g. FIV, SIV
- C12N2740/15041—Use of virus, viral particle or viral elements as a vector
- C12N2740/15043—Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2800/00—Nucleic acids vectors
- C12N2800/80—Vectors containing sites for inducing double-stranded breaks, e.g. meganuclease restriction sites
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Genetics & Genomics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Zoology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- Microbiology (AREA)
- Biophysics (AREA)
- Virology (AREA)
- Epidemiology (AREA)
- Veterinary Medicine (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Public Health (AREA)
- Plant Pathology (AREA)
- Animal Behavior & Ethology (AREA)
- Pharmacology & Pharmacy (AREA)
- Toxicology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Gastroenterology & Hepatology (AREA)
- Cell Biology (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
本发明涉及基因治疗领域,尤其涉及一种sgRNA及其构建的慢病毒载体和应用,具体为以SIVmac1A11慢病毒为骨架,表达SpCas9蛋白及基因特异性的sgRNA,用于治疗人和猴艾滋病。所述sgRNA的核酸序列如SEQ ID NO.1‑2所示。本发明采用了目前最高效的CRISPR/Cas9基因编辑工具,所设计的CXCR4/CCR5基因sgRNA位点具有优于以往研究所报道的其他位点的基因敲除活性,也是首次应用于SIV感染恒河猴的基因治疗,相比ZFN和TALEN具有操作便捷、成本低廉等优势。
Description
技术领域
本发明涉及基因治疗领域,尤其涉及一种sgRNA及其构建的慢病毒载体和应用,具体为以SIVmac1A11慢病毒为骨架,表达SpCas9蛋白及基因特异性的sgRNA,用于治疗人和猴艾滋病。
背景技术
成簇的规律间隔短回文重复序列及其相关的Cas9蛋白系统(CRISPR/Cas9)是细菌和古细菌用于抵御外源病毒感染的天然防御机制。外源的DNA入侵细菌/古细菌后,会被细胞中与外源DNA特定区域互补的RNA引导序列(guideRNA)识别,并引导Cas9核酸酶到达识别部位,对目标序列进行酶切,从而降解外源DNA。此系统具体工作原理如下:crRNA(CRISPR-derived RNA)通过碱基配对与tracrRNA(trans-activating RNA)结合形成tracrRNA/crRNA复合物,该复合物能够引导核酸酶Cas9蛋白在与crRNA配对的目标序列靶位点剪切双链DNA。通过人工设计这两种RNA,可以改造形成具有引导作用的单链sgRNA(singleguideRNA),引导Cas9对DNA进行定点切割。
作为一种RNA导向的双链DNA结合蛋白,Cas9效应物核酸酶是已知的第一个统一因子(unifying factor),能够共定位RNA、DNA和蛋白,从而拥有巨大的改造潜力。将蛋白与无核酸酶的Cas9(Cas9nuclease-null)融合,并表达适当的sgRNA,可靶定任何dsDNA序列,而sgRNA的末端可连接到目标DNA,不影响Cas9的结合。因此,Cas9能在任何dsDNA序列处带来任何融合蛋白及RNA,这为生物体的研究和改造带来巨大潜力。因此CRISPR/Cas9很快作为新的基因编辑工具被广泛应用于遗传工程、作物育种以及基因治疗等领域。
艾滋病是一种难以根治的慢性传染病。尽管联合抗逆转录病毒治疗可以控制HIV-1病毒的复制,维持患者的生存,但是药物的副作用以及长期用药产生的抗药性等问题仍然存在,寻找更有效,且能改善患者生存质量的治疗策略是艾滋病研究领域的重点和难点。艾滋病的基因治疗已涉及到病毒感染宿主的整个生命周期,其中靶向病毒入侵门户——辅助受体CXCR4和CCR5的治疗策略已经在临床上展现了曙光。2007年一位感染HIV-1且身患急性髓细胞性白血病的男子,经过异体移植CCR5基因天然缺失32个碱基(CCR5Δ32/Δ32)的供者骨髓后,至今仍未检测到体内病毒的反弹,且身体状况良好,被公认是全球第一例被治愈的艾滋病患者。后续的研究表明,表型的供者骨髓是实现根治的关键。然而天然携带CCR5Δ32/Δ32基因型的人数稀少,且存在HLA配型等问题,限制了此疗法的推广。此外,已有大量研究证实,HIV-1不同的毒株具有不同的共受体嗜性(CCR5嗜性,CXCR4嗜性,X4-R5双嗜性等),并且同一个患者体内也存在不同嗜性的HIV-1变异体。因此利用遗传工具来修饰患者自身CCR5、CXCR4等基因,并自体回输,用于控制和治疗HIV-1感染,有可能最终实现功能性治愈。
CN 104480144 A公开了一种可用于艾滋病基因治疗的CRISPR/Cas9重组慢病毒载体及其慢病毒,该重组慢病毒载体由慢病毒载体lentiCRISPR用BsmBI酶切后,连入带BsmBI粘性末端的CXCR4特异靶序列重组而得。其采用的是人的CRISPR/Cas9重组慢病毒载体,其安全性不高。
恒河猴作为艾滋病研究的模型,具有小鼠所不具有的优势:首先猴与人的遗传背景更为接近;其次,研究已证实HIV-1起源于SIV,HIV-1感染人的病程和病理特征与SIV感染恒河猴十分相似。因此,用恒河猴感染SIVmac251作为慢性感染模型,对于临床治疗HIV-1感染具有重要的参考意义。以往的研究中,利用锌指核酸酶(ZFN)或转录活化因子样效应物核酸酶(TALEN)对猕猴的胚胎细胞进行基因的特异性修饰,用于获得转基因猴,但是对于分化的外周原代细胞的基因修饰,所能运用的技术手段有限。利用腺病毒或者腺相关病毒作为载体传递ZFN或TALEN能够对外周血细胞进行适度的修饰,但是这两种技术的运用较为复杂,而腺病毒本身对恒河猴有免疫原性,可能会影响基因修饰的效果。
因此采用SIV慢病毒载体,传递CRISPR/Cas9,既能提高感染原代细胞的效率,同时也能更为方便快捷高效地对目的基因进行修饰,提高基因修饰的安全性。
发明内容
针对目前的CRISPR/Cas9重组慢病毒载体,由于人是HIV-1的天然宿主,以HIV-1为载体的慢病毒对人有潜在的安全隐患,并且对非人灵长类原代细胞尤其是T细胞感染效率很低,本发明提供一种sgRNA及其构建的慢病毒载体和应用,经过CXCR4和CCR5双基因修饰的猴T细胞在体外的SIV病毒感染试验中表现出优于野生型细胞的抗病毒侵染能力。
为达此目的,本发明采用以下技术方案:
第一方面,本发明提供一种sgRNA,所述sgRNA的核酸序列如SEQ ID NO.1-3所示。
所述核酸序列如下:
SEQ ID NO.1:CTACAGCAGTGTCCTCATCCTGG;
SEQ ID NO.2:CAATGTGTCAACTCTTGACAGGG;
本发明中,所述sgRNA可根据敲除基因的需要进行选择,只需敲除CXCR4选择SEQID NO.1所示的sgRNA,只需敲除CCR5选择SEQ ID NO.2所示的sgRNA,若需要同时敲除CXCR4和CCR5,可分别将SEQ ID NO.1和SEQ ID NO.2与启动子连接,共同导入同一个质粒中,实现同时敲除。
优选地,所述sgRNA的启动子为U6启动子。
本发明中,选择SIVmac251感染的中国恒河猴,在病毒感染的慢性期采集患猴的自身细胞,包括造血干细胞(HSC)、外周血CD4+T细胞并体外短期培养扩增,构建同时表达Cas9核酸酶以及靶向CXCR4和/或CCR5基因的sgRNAs的慢病毒载体。由于人是HIV-1的天然宿主,以HIV-1为载体的慢病毒对人有潜在的安全隐患,并且对非人灵长类原代细胞尤其是T细胞感染效率很低,因此选择基于猴免疫缺陷病毒SIVmac1A11的第3代慢病毒骨架,最终获得的慢病毒命名为SIV-CRISPR/Cas9,将SIV-CRISPR/Cas9慢病毒体外感染原代细胞,随后将基因修饰的细胞回输给经过条件性处理的患猴,观察治疗效果。
第二方面,本发明提供一种SIV-CRISP/cas9慢病毒载体,所述慢病毒载体包含如第一方面所述的sgRNA的核酸序列。
第三方面,本发明提供一种如第二方面所述的SIV-CRISP/Spcas9慢病毒载体的构建方法,包括如下步骤:
(1)使用HpaI和ClaI双酶切pCL20cSLFR MSCV-GFP载体,得到酶切后的载体;
(2)PCR扩增U6启动子-sgRNA-EFS启动子-Cas9序列,通过末端重组的方式克隆到步骤(1)酶切后的载体上,得到所述SIV-CRISP/Spcas9慢病毒载体。
优选地,步骤(2)所述的PCR扩增的引物的核酸序列如SEQ ID NO.3-4所示。
所述核酸序列如下:
SEQ ID NO.3:CGGTGGTTCGAACGCGTTAACCCTATTTCCCATGATTCCTTC;
SEQ ID NO.4:GGTACCGTATACGGCATCGATGTAATCCAGAGGTTGATTGTCG.
第四方面,本发明提供一种重组慢病毒,将包含如第二方面所述的SIV-CRISP/cas9慢病毒载体与包装辅助质粒pCAG4-RTR-SIV、pCAG-SIVgprre和pCAG-VSVG共转染哺乳细胞得到的重组慢病毒。
优选地,所述哺乳细胞为HEK293T细胞。
第五方面,本发明提供一种如第二方面所述的SIV-CRISP/cas9慢病毒载体用于敲除CXCR4和/或CCR5基因。
第六方面,本发明提供一种组合物,所述组合物包括如第二方面所述的慢病毒载体和/或如第四方面所述的重组慢病毒。
第七方面,本发明提供如第二方面所述的慢病毒载体、如第四方面所述的重组慢病毒或如第六方面所述的组合物在制备抗艾滋病药物中的应用。
与现有技术相比,本发明具有如下有益效果:
(1)本发明的SIV-CRISPR/Cas9慢病毒有别于目前已报道的其他Cas9传递工具,所述SIV慢病毒载体能将CRISPR/Cas9系统成功转入恒河猴原代细胞,从而实现对目标基因的有效敲除,经过CCR5修饰的猴HSC细胞仍然维持分化的潜能,经过CXCR4和CCR5双基因修饰的猴T细胞在体外的SIV病毒感染试验中表现出优于野生型细胞的抗病毒侵染能力;
(2)本发明的SIV慢病毒载体对非人灵长类细胞具有较高的感染能力,可以应用于多种疾病基因治疗的临床前动物试验,由于SIV慢病毒不会感染人体,且对人源的细胞也具有较高的感染效率,因此可以考虑直接用于未来的临床研究;
(3)本专利采用了目前最高效的CRISPR/Cas9基因编辑工具,所设计的CXCR4/CCR5基因sgRNA位点具有优于以往研究所报道的其他位点的基因敲除活性,也是首次应用于SIV感染恒河猴的基因治疗,相比ZFN和TALEN具有操作便捷、成本低廉等优势。
附图说明
图1(A)为本发明靶向CXCR4的SIV-CRISPR/Cas9慢病毒表达载体示意图,图1(B)为本发明靶向CCR5的SIV-CRISPR/Cas9慢病毒表达载体示意图;
图2(A)为本发明筛选最优的CXCR4特异性sgRNA的凝胶电泳图谱,图2(B)为本发明筛选最优的CXCR4特异性sgRNA的凝胶电泳图谱;
图3(A)为本发明猴CD4+T细胞感染SIV-GFP报告病毒后GFP表达水平检测,图3(B)为本发明猴HSC细胞感染SIV-GFP报告病毒后GFP表达水平检测;
图4为本发明CRISPR/Cas9慢病毒有效敲除猴CD4+T细胞CXCR4和CCR5基因,其中,图4(A)为敲除后的凝胶电泳图谱,图4(B)为CXCR4基因的敲除效率,图4(C)为CCR5基因的敲除效率;
图5为本发明CRISPR/Cas9修饰过的猴CD4+T细胞可抵抗SIV病毒的感染;
图6为本发明CRISPR/Cas9慢病毒有效敲除猴HSC细胞CCR5基因;
图7为本发明CRISPR/Cas9修饰过的猴HSC细胞仍保留造血分化的潜力。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果,以下结合附图并通过具体实施方式来进一步说明本发明的技术方案,但本发明并非局限在实施例范围内。
实施例1:靶向人/猴CXCR4/CCR5的SIV-CRISPR/Cas9慢病毒表达载体pCL20-CAS-sgRNA的构建
(1)从GenBank数据库搜索人和恒河猴的CXCR4基因和CCR5基因,通过序列比对,找到两者蛋白编码区的同源序列。选择靠近5’端的同源序列,用在线工具(http://crispr.mit.edu/)设计可能的sgRNA,该在线工具能够根据目标序列的碱基分布情况,结合可能的脱靶概率,得到综合评分。分值越高的sgRNA,其可能的敲出效率越高而脱靶效率越低。基于此,本专利中对CXCR4选取排名靠前且靠近编码区5’端的7条sgRNA;对CCR5选取排名靠前且靠近编码区5’端的8条sgRNA,如图1(A)-图1(B)所示。
将构建的所有sgRNA载体转染Hela-CD4细胞,提取DNA,用于扩增目标序列,所用的引物标记为:
SEQ ID No.5:CACTTCAGATAACTACACCGAGG;
SEQ ID No.6:GAGTGTGACAGCTTGGAGATG;
SEQ ID No.7:CGCTCTACTCACTGGTGTTC;
SEQ ID No.8:CCTGTGCCTCTTCTTCTCATT;
将扩增的PCR产物用于Surveyor酶切,随后电泳鉴定出存在较高敲除活性的sgRNA,结果如图2(A)-图2(B)所示,CXCR4和CCR5基因在不同的sgRNA作用下,有不同的基因敲除效率。CRISPR/Cas9造成目标序列发生DNA双链断裂,哺乳动物细胞通过非同源末端连接(NHEJ)修复方式进行断链的修复,随之产生各种突变(InDels)。Surveyor酶则是专门用于检测这些突变的。
(2)将选定的最优sgRNA载体经PCR扩增,得到一段包含sgRNA及Cas9的完整序列:U6启动子-sgRNA-EFS启动子-Cas9,用于扩增的引物标记为:
SEQ ID NO.3:CGGTGGTTCGAACGCGTTAACCCTATTTCCCATGATTCCTTC;
SEQ ID NO.4:GGTACCGTATACGGCATCGATGTAATCCAGAGGTTGATTGTCG.
将扩增的序列与HpaI+ClaI双酶切的pCL20cSLFR MSCV-GFP长片段通过末端重组的方式连接即得到pCL20-CAS-sgRNA载体。采用Vazyme公司的一步法克隆试剂盒进行此步操作。
(3)重组质粒的测序。将重组质粒送上海英骏生物技术有限公司进行测序,测序结果与预期的结果比对,证实序列完全正确。
实施例2:慢病毒表达载体和包装载体的大量提取
(1)分别取pCL20-CAS-sgRNA,pCAG4-RTR-SIV,pCAG-SIVgprre,pCAG-VSVG质粒少量转化stbl3大肠杆菌感受态,第二天挑取单克隆接种于1ml含氨苄青霉素(Amp)的LB培养液,摇菌8小时后,取500μl菌液接入含有500ml LB/Amp培养液的培养瓶中,37℃摇床培养12-16小时;
(2)5000*g离心5分钟,收集菌体,倒掉培养基并反扣于吸水纸轻轻拍打以吸尽残液。收集的菌体采用质粒大提试剂盒(广州美基生物科技有限公司)大提质粒。
(3)加入20ml BufferP1/RNase A至菌体中,涡旋重悬细菌(确保细菌完全重悬,重悬后的溶液没有细胞团块);
(4)向重悬液中加入20ml Buffer P2,颠倒混匀10-15次,静置1-2分钟(一定要轻轻混匀,注意操作时间不能超过4分钟);
(5)向裂解液中加入20ml Buffer E3,立即颠倒混匀15-20次,混匀过程要轻柔而充分。中和充分的标准是:溶液变得不粘稠,沉淀物分散显白色;
(6)3000*g离心10分钟,然后转移上清液至新的离心管中,加入1/3倍体积BufferE4至上清液中,涡旋混匀;
(7)将MaxPure Micro Column套在50ml离心管中,转移15ml混合液至柱子中,3000*g离心10分钟;
(8)倒掉流出液,把柱子套回收集管中,继续转移剩下的溶液至柱子中,3000*g离心10分钟;
(9)倒掉流出液,把柱子套回收集管中,加入20ml Buffer E5至柱子,3000*g离心10分钟;
(10)倒掉滤液把柱子套回收集管中。加入20ml Buffer PW2(已用无水乙醇稀释)至柱子,3000*g离心10分钟;
(11)倒掉滤液把珠子套回收集管中。加入20ml Buffer PW2(已用无水乙醇稀释)至柱子,3000*g离心10分钟;
(12)倒弃滤液把柱子套回收集管中,4000*g离心10分钟;
(13)把柱子套在灭菌的50ml离心管中,加入30-200ml灭菌水至柱子的膜中央,静置2分钟,10000*g离心5分钟,收集分离液;
(14)进一步抽提去除内毒素,用灭菌水调整质粒浓度在0.1g-0.6mg/ml之间;
(15)加入0.1倍体积Buffer ER1和0.1倍体积Buffer ER2至质粒溶液中,颠倒混匀;
(16)冰上放置20min,期间颠倒混匀多次;
(17)42℃水浴5min后室温在10000*g速度下离心3min;
(18)轻轻取出样品,发现底部形成了一层红色的溶液,小心把上清液转移到离心管仲,加入0.7倍体积的异丙醇至上清液中,颠倒混匀多次;
(19)室温下,在10000*g速度下离心10min,倒掉上清液,加入1倍体积的70%乙醇至沉淀中。涡旋混匀15-30s;
(20)室温下,在10000*g速度下离心3min,小心倒掉上清液;
(21)室温下,在10000*g速度下离心1min收集管壁上的液滴,不要吸到沉淀,在空气中干燥10min;
(22)加入适量无菌水到质粒中,涡旋10-20s混匀,室温静置30min让质粒充分溶解,期间颠倒混匀多次;
(23)在Nanodrop紫外分光光度计上测量质粒浓度,然后将质粒保存在-20℃中。
实施例3:慢病毒的包装、浓缩和滴定。
3.1慢病毒的包装
(1)细胞预板:在转染前24h,取长满的293T细胞进行预板,以第二天能达到70%汇合度为宜(75mm培养皿内预板500万);
(2)第二天:转染;
(a)观察预板细胞的生长情况,以细胞的汇合度在90%左右为宜,吸去培养基,加入新鲜预热的完全培养基(75mm培养皿内15mL);
(b)转染前将转染所需的PEI、质粒、Opti-MEM I Reduced Serum Medium等放置室温平衡;
(c)制备质粒的混合液。本次包装共10皿293T细胞,每一皿细胞准备混合液500μL,故需准备混合液总体积为5mL。先根据各种质粒用量加入三种质粒,共420μg(pCL20-CAS-sgRNA:pCAG4-RTR-SIV:pCAG-SIVgprre:pCAG-VSVG=5:3:3:3),加入Opti-MEM I ReducedSerum Medium调整体积到2.5mL,吹打混匀后室温放置10min。再取PEI和Opti-MEM IReduced Serum Medium各1.25mL,混匀后室温放置10min。最后将以上两种溶液混合,混匀后室温放置10min,即为转染用的混合液;
(d)混合液逐滴加入培养皿中,每皿500μL;
(3)转染6h以后,需把每皿培养基换成17mL UltraCLUTURE无血清培养基;
(4)第三至五天:病毒的收集。转染48h-72h,分别收集培养上清,收集的病毒上清暂存于4℃。
3.2慢病毒纯化与浓缩
将收集的培养上清用0.45um的膜过滤后用切向流超滤膜(Millipore TFF BiOmax100k超滤膜包)进行纯化:将原液中的小分子杂蛋白滤除,介质置换为无菌的不含Ca2+、Mg2+离子的PBS,同时缩小总体积至30-40ml。超速离心浓缩慢病毒:SW-32Ti的转子25000rpm(对应离心力为106750g),4度离心2小时。去上清后,用400ul的PBS重悬,保存于-80℃。
3.3慢病毒的滴定
(1)6孔板中预铺板Hela细胞,1×105cells/well,37℃5%CO2培养箱中培养过夜(大约18-20h);
(2)配制polybrene母液:灭菌纯水,8mg/mL,0.22μm滤头过滤,分装,保存于-20℃备用;
(3)配制含polybrene的DMEM培养基:+10%FBS,+1%双抗,8μg/mL polybrene(培养基体积的千分之一);
(4)融化病毒:从-80℃取出病毒冻存液,在室温融化,融化后置于冰上拿进细胞间备用;
(5)稀释病毒:用配好的含polybrene的10%FBS DMEM(DF-10)完全培养基将病毒原液进行10倍稀释,得到10-1-10-4的病毒稀释液。注意每次吸取病毒液进行下一步稀释前要混匀;
(6)弃掉旧培养基,第一孔中加入1mL不含病毒的培养基作为阴性对照。其余每孔中加入1mL对应的病毒稀释液。37℃培养18-20h;
(7)第二天早上去掉含病毒的培养基,加入DF-10(含10U/ml的DNase I)于37℃孵育15min以除去残留的核酸;替换为2mL不含聚凝胺的DF-10培养基。
(8)继续培养两天后,吸去培养基,然后用胰酶消化细胞;
(9)将细胞吹成单个细胞,加入适量完全培养基终止胰酶反应,300g 3min离心收集细胞;
(10)提取细胞DNA,参考血液和组织基因组提取试剂盒(Qiagen)说明书;
(11)参考文献合成WPRE引物和探针,用所提的DNA为模板,进行Real time qPCR反应。包括两个独立的反应,反应一:扩增整合慢病毒(前病毒)中的WPRE序列,反应二:扩增内参基因RNaseP,两个反应用相同的DNA模板,反应条件完全一致:95℃,1分钟;95℃,15秒,60℃,15秒,读板,共45个循环;4℃,10秒;
(15)计算公式:滴度(IU/ml)=(P×N×D×1000)/V,P=每个基因组的前病毒拷贝数,N=转染时的细胞数,D=慢病毒稀释倍数,V=所加入病毒稀释液体积,其中P的数值需根据质粒标准品以及RNaseP内参的数值来确定。
实施例4:恒河猴T细胞的分离、培养和感染
4.1 PBMC细胞的分离
(1)采血50mL,1100g离心10min(加速设置为3,降速设置为1);
(2)取白细胞层,用2%FBS稀释至8mL;
(3)吸取5mL LymphoPrep加入15mL离心管中,再将稀释血液小心沿管壁加至分层液上,保持两者界面清晰;
(4)1100g离心20min(加速设置为1,降速设置为1);
(5)用巴氏吸管轻轻吸出灰白色的单个核细胞,加入另一支已含有10mL RF-10的离心管中,混匀;
(6)以500g离心5min,弃上清;
(7)加10mL RF-10重悬细胞,trypan blue计数,300g离心10min,弃上清。
4.2磁珠分选恒河猴CD4+T细胞
(1)涡旋混匀磁珠,取25μL磁珠于试管中,加入1mL Buffer 1混匀,将试管放在磁力架上1min,去上清。加25μL Bffer1重悬磁珠备用;
(2)PBMC用Buffer 1重悬至密度为107个/mL;
(3)向1mL的PBMC中加入25μL洗涤的磁珠,2-8℃孵育20min,放在摇床上倾斜旋转;
(4)将试管放在磁铁上2min,收集上清;
(5)移开试管,加1mL Buffer 1,吹打混匀,放在磁珠上2min,收集上清,重复一次;
(6)重复步骤(5);
(7)加100μL Buffer 2重悬细胞,加10μL DETCHaBEAD,室温下孵育45min使细胞从磁珠上释放;
(8)将试管放在磁力架上1min,含有细胞的上清转移到新的试管中,加500μLBuffer 2洗涤磁珠2-3次,收集上清;
(9)加4mL Buffer 2,350g离心5min,去上清,用T细胞培养基重悬细胞;
4.3恒河猴CD4+T细胞的培养
(1)磁珠分选后的CD4+T细胞350g离心10min;
(2)RF-10重悬计数;
(3)将CD4+T细胞接种于48-well板,细胞密度为5×105个/mL;
(4)在T细胞专用培养基加入CD3/CD28抗体磁珠。加入磁珠的量按与细胞的比例1:1加入;
(5)加rhIL-2,使终浓度为10ng/ml。
(6)每周计数2-3次,记录细胞的增殖情况。
4.4 T细胞的慢病毒转染。
(1)磁珠分选后的CD4+T细胞350g离心10min,加完全培养基重悬计数;
(2)加CD4+T细胞于96孔板中培养,细胞密度为5×105个/mL,每孔细胞数为1×105个;
(3)洗涤磁珠,向培养皿中加入与细胞1:1比例的磁珠;
(4)加rhIL-2,使终浓度为10μg/L;
(5)刺激24h后,感染细胞,加polybrene,使终浓度为6μg/mL,混匀;
(6)16-24h后换液。
荧光显微镜拍照病毒感染T细胞的情况,如图3(A)所示。
提取基因敲除后的T细胞基因组,检测CXCR4和CCR5的基因敲除效率,结果如图4(A)、4(B)、4(C)显示CXCR4和CCR5的基因敲除效率。
基因敲除后的T细胞在体外感染猴艾滋病毒,检测对艾滋病毒的抵抗情况。结果如图5所示,CCR5基因敲除后的T细胞,对CCR5嗜性的猴艾滋病毒具有抵抗性。
实施例5:猴造血干细胞(HSC)细胞的分离和培养
(1)对SIV感染猴进行造血干细胞的动员:联合注射rhSCF(100μg/kg/day)和rhG-CSF(25μg/kg/day),连续3天;
(2)用血细胞分离机分离动员后的外周血单个核细胞,按照步骤4.1的操作分离PBMC;
(3)按照CD34阳性细胞磁珠分选试剂盒操作说明,分选CD34+HSC。按照1×106/ml的浓度将HSC铺于预先包被有25μg/cm2RetroNectin纤连蛋白的24孔培养板,培养基为StemSpanⅡSFEM干细胞培养基(StemCell),添加的细胞因子有:SCF,Flt3L,TPO,浓度均为100ng/ml,称为HSC完全培养基;
(4)细胞预刺激2小时后,按照MOI=100添加SIV-sgR5/Cas9慢病毒(只用于敲除CCR5),感染24h后替换为新鲜的完全培养基;荧光显微镜拍照病毒感染造血干细胞的情况如图3(B)所示。
(5)继续培养2天后,收集细胞,用于检测CCR5基因敲除效率,结果如图6所示,猴造血干细胞中的CCR5基因具有一定效率的敲除;评价修饰后细胞的表型;检测修饰后的HSC细胞体外向多个造血系分化的能力等。
实施例6:猴HSC细胞的体外造血分化集落(CFU)分析
(1)收集感染过SIV-sgR5/Cas9以及未感染的对照HSC细胞,准确计数;
(2)各个处理组分别取1000个活细胞,重悬于300μL HSC完全培养基中,补充添加G-CSF,IL-3,IL-6,各50ng/ml;
(3)将重悬的细胞转入3ml预热的甲基纤维素半固体培养基(StemCell)中,震荡混匀后,铺于低吸附的6-孔板。每个板只接种1孔细胞,其余5孔加入无菌水各2ml;
(4)将孔板置于37℃,培养12-14天,观察和计数各种不同的集落:BFU-E/CFU-E/CFU-G/CFU-M/CFU-GM/CFU-GEMN等,结果如图7所示,基因敲除后的造血干细胞具有分化成各种细胞集落的能力;
(5)挑取所有的单克隆细胞集落,用于提取DNA,检测每个克隆的基因敲除情况,进行统计。
申请人声明,本发明通过上述实施例来说明本发明的详细方法,但本发明并不局限于上述详细方法,即不意味着本发明必须依赖上述详细方法才能实施。所属技术领域的技术人员应该明了,对本发明的任何改进,对本发明产品各原料的等效替换及辅助成分的添加、具体方式的选择等,均落在本发明的保护范围和公开范围之内。
SEQUENCE LISTING
<110> 中国科学院广州生物医药与健康研究院
<120> 一种sgRNA及其构建的慢病毒载体和应用
<130> 2017
<160> 8
<170> PatentIn version 3.3
<210> 1
<211> 23
<212> DNA
<213> 人工合成序列
<400> 1
ctacagcagt gtcctcatcc tgg 23
<210> 2
<211> 23
<212> DNA
<213> 人工合成序列
<400> 2
caatgtgtca actcttgaca ggg 23
<210> 3
<211> 42
<212> DNA
<213> 人工合成序列
<400> 3
cggtggttcg aacgcgttaa ccctatttcc catgattcct tc 42
<210> 4
<211> 43
<212> DNA
<213> 人工合成序列
<400> 4
ggtaccgtat acggcatcga tgtaatccag aggttgattg tcg 43
<210> 5
<211> 23
<212> DNA
<213> 人工合成序列
<400> 5
cacttcagat aactacaccg agg 23
<210> 6
<211> 21
<212> DNA
<213> 人工合成序列
<400> 6
gagtgtgaca gcttggagat g 21
<210> 7
<211> 20
<212> DNA
<213> 人工合成序列
<400> 7
cgctctactc actggtgttc 20
<210> 8
<211> 21
<212> DNA
<213> 人工合成序列
<400> 8
cctgtgcctc ttcttctcat t 21
Claims (10)
1.一种sgRNA,其特征在于,所述sgRNA的核酸序列如SEQ ID NO.1-2所示。
2.根据权利要求1所述的sgRNA,其特征在于,所述sgRNA的启动子为U6启动子。
3.一种SIV-CRISP/cas9慢病毒载体,其特征在于,所述慢病毒载体包含如权利要求1或2所述的sgRNA的核酸序列。
4.一种如权利要求3所述的SIV-CRISP/Spcas9慢病毒载体的构建方法,其特征在于,包括如下步骤:
(1)使用HpaI和ClaI双酶切pCL20cSLFR MSCV-GFP载体,得到酶切后的载体;
(2)PCR扩增U6启动子-sgRNA-EFS启动子-Cas9序列,通过末端重组的方式克隆到步骤(1)酶切后的载体上,得到所述SIV-CRISP/Spcas9慢病毒载体。
5.根据权利要求4所述的方法,步骤(2)所述的PCR扩增的引物的核酸序列如SEQ IDNO.3-4所示。
6.一种重组慢病毒,其特征在于,将包含如权利要求3所述的SIV-CRISP/cas9慢病毒载体与包装辅助质粒pCAG4-RTR-SIV、pCAG-SIVgprre和pCAG-VSVG共转染哺乳细胞得到的重组慢病毒。
7.根据权利要求6所述的重组慢病毒,其特征在于,所述哺乳细胞为HEK293T细胞。
8.一种如权利要求3所述的SIV-CRISP/cas9慢病毒载体用于敲除CXCR4和/或CCR5基因。
9.一种组合物,其特征在于,所述组合物包括如权利要求3所述的慢病毒载体和/或如权利要求6所述的重组慢病毒。
10.如权利要求3所述的慢病毒载体、如权利要求6所述的重组慢病毒或如权利要求9所述的组合物在制备抗艾滋病药物中的应用。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054835.9A CN106801056A (zh) | 2017-01-24 | 2017-01-24 | 一种sgRNA及其构建的慢病毒载体和应用 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054835.9A CN106801056A (zh) | 2017-01-24 | 2017-01-24 | 一种sgRNA及其构建的慢病毒载体和应用 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106801056A true CN106801056A (zh) | 2017-06-06 |
Family
ID=58987241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710054835.9A Pending CN106801056A (zh) | 2017-01-24 | 2017-01-24 | 一种sgRNA及其构建的慢病毒载体和应用 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106801056A (zh) |
Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312798A (zh) * | 2017-06-16 | 2017-11-03 | 武汉大学 | 含特异靶向CCR5基因的gRNA序列的CRISPR/Cas9重组慢病毒载体及应用 |
| US9999671B2 (en) | 2013-09-06 | 2018-06-19 | President And Fellows Of Harvard College | Delivery of negatively charged proteins using cationic lipids |
| US10113163B2 (en) | 2016-08-03 | 2018-10-30 | President And Fellows Of Harvard College | Adenosine nucleobase editors and uses thereof |
| US10167457B2 (en) | 2015-10-23 | 2019-01-01 | President And Fellows Of Harvard College | Nucleobase editors and uses thereof |
| US10323236B2 (en) | 2011-07-22 | 2019-06-18 | President And Fellows Of Harvard College | Evaluation and improvement of nuclease cleavage specificity |
| CN110055281A (zh) * | 2019-04-25 | 2019-07-26 | 山东大学第二医院 | 一种用于制备car-t的慢病毒载体及其构建方法和应用 |
| US10465176B2 (en) | 2013-12-12 | 2019-11-05 | President And Fellows Of Harvard College | Cas variants for gene editing |
| US10508298B2 (en) | 2013-08-09 | 2019-12-17 | President And Fellows Of Harvard College | Methods for identifying a target site of a CAS9 nuclease |
| US10597679B2 (en) | 2013-09-06 | 2020-03-24 | President And Fellows Of Harvard College | Switchable Cas9 nucleases and uses thereof |
| US10704062B2 (en) | 2014-07-30 | 2020-07-07 | President And Fellows Of Harvard College | CAS9 proteins including ligand-dependent inteins |
| US10745677B2 (en) | 2016-12-23 | 2020-08-18 | President And Fellows Of Harvard College | Editing of CCR5 receptor gene to protect against HIV infection |
| US10858639B2 (en) | 2013-09-06 | 2020-12-08 | President And Fellows Of Harvard College | CAS9 variants and uses thereof |
| US11046948B2 (en) | 2013-08-22 | 2021-06-29 | President And Fellows Of Harvard College | Engineered transcription activator-like effector (TALE) domains and uses thereof |
| US11268082B2 (en) | 2017-03-23 | 2022-03-08 | President And Fellows Of Harvard College | Nucleobase editors comprising nucleic acid programmable DNA binding proteins |
| US11306324B2 (en) | 2016-10-14 | 2022-04-19 | President And Fellows Of Harvard College | AAV delivery of nucleobase editors |
| US11319532B2 (en) | 2017-08-30 | 2022-05-03 | President And Fellows Of Harvard College | High efficiency base editors comprising Gam |
| US11447770B1 (en) | 2019-03-19 | 2022-09-20 | The Broad Institute, Inc. | Methods and compositions for prime editing nucleotide sequences |
| US11542496B2 (en) | 2017-03-10 | 2023-01-03 | President And Fellows Of Harvard College | Cytosine to guanine base editor |
| US11542509B2 (en) | 2016-08-24 | 2023-01-03 | President And Fellows Of Harvard College | Incorporation of unnatural amino acids into proteins using base editing |
| US11560566B2 (en) | 2017-05-12 | 2023-01-24 | President And Fellows Of Harvard College | Aptazyme-embedded guide RNAs for use with CRISPR-Cas9 in genome editing and transcriptional activation |
| US11661590B2 (en) | 2016-08-09 | 2023-05-30 | President And Fellows Of Harvard College | Programmable CAS9-recombinase fusion proteins and uses thereof |
| US11732274B2 (en) | 2017-07-28 | 2023-08-22 | President And Fellows Of Harvard College | Methods and compositions for evolving base editors using phage-assisted continuous evolution (PACE) |
| US11795443B2 (en) | 2017-10-16 | 2023-10-24 | The Broad Institute, Inc. | Uses of adenosine base editors |
| US11898179B2 (en) | 2017-03-09 | 2024-02-13 | President And Fellows Of Harvard College | Suppression of pain by gene editing |
| US11912985B2 (en) | 2020-05-08 | 2024-02-27 | The Broad Institute, Inc. | Methods and compositions for simultaneous editing of both strands of a target double-stranded nucleotide sequence |
| CN118813625A (zh) * | 2024-06-17 | 2024-10-22 | 天海元祺生物科技(天津)有限公司 | 高度靶向人类HLA-A基因的sgRNA及应用 |
| US12157760B2 (en) | 2018-05-23 | 2024-12-03 | The Broad Institute, Inc. | Base editors and uses thereof |
| US12281338B2 (en) | 2018-10-29 | 2025-04-22 | The Broad Institute, Inc. | Nucleobase editors comprising GeoCas9 and uses thereof |
| US12351837B2 (en) | 2019-01-23 | 2025-07-08 | The Broad Institute, Inc. | Supernegatively charged proteins and uses thereof |
| US12390514B2 (en) | 2017-03-09 | 2025-08-19 | President And Fellows Of Harvard College | Cancer vaccine |
| US12406749B2 (en) | 2017-12-15 | 2025-09-02 | The Broad Institute, Inc. | Systems and methods for predicting repair outcomes in genetic engineering |
| US12435330B2 (en) | 2019-10-10 | 2025-10-07 | The Broad Institute, Inc. | Methods and compositions for prime editing RNA |
| US12473543B2 (en) | 2019-04-17 | 2025-11-18 | The Broad Institute, Inc. | Adenine base editors with reduced off-target effects |
| US12509680B2 (en) | 2023-05-31 | 2025-12-30 | The Broad Institute, Inc. | Methods and compositions for prime editing nucleotide sequences |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030134817A1 (en) * | 2000-05-30 | 2003-07-17 | University Of Rochester | SIV derived lentiviral vector systems |
| CN104694573A (zh) * | 2015-03-26 | 2015-06-10 | 中国科学院武汉病毒研究所 | 利用CRISPR/Cas9抑制HIV-1感染原代淋巴细胞的方法 |
| CN105316337A (zh) * | 2015-10-20 | 2016-02-10 | 芜湖医诺生物技术有限公司 | 嗜热链球菌CRISPR-Cas9系统识别的人CXCR4基因的靶序列和sgRNA及其应用 |
| CN105331608A (zh) * | 2015-10-20 | 2016-02-17 | 芜湖医诺生物技术有限公司 | 脑膜炎双球菌CRISPR-Cas9系统识别的人CXCR4基因的靶序列和sgRNA及其应用 |
| CN105518146A (zh) * | 2013-04-04 | 2016-04-20 | 哈佛学院校长同事会 | 利用CRISPR/Cas系统的基因组编辑的治疗性用途 |
| CN105567688A (zh) * | 2016-01-27 | 2016-05-11 | 武汉大学 | 一种可用于艾滋病基因治疗的CRISPR/SaCas9系统 |
| CN105567738A (zh) * | 2016-01-18 | 2016-05-11 | 南开大学 | 使用基因组编辑技术CRISPR-Cas9诱导CCR5Δ32缺失的方法 |
-
2017
- 2017-01-24 CN CN201710054835.9A patent/CN106801056A/zh active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030134817A1 (en) * | 2000-05-30 | 2003-07-17 | University Of Rochester | SIV derived lentiviral vector systems |
| CN105518146A (zh) * | 2013-04-04 | 2016-04-20 | 哈佛学院校长同事会 | 利用CRISPR/Cas系统的基因组编辑的治疗性用途 |
| CN104694573A (zh) * | 2015-03-26 | 2015-06-10 | 中国科学院武汉病毒研究所 | 利用CRISPR/Cas9抑制HIV-1感染原代淋巴细胞的方法 |
| CN105316337A (zh) * | 2015-10-20 | 2016-02-10 | 芜湖医诺生物技术有限公司 | 嗜热链球菌CRISPR-Cas9系统识别的人CXCR4基因的靶序列和sgRNA及其应用 |
| CN105331608A (zh) * | 2015-10-20 | 2016-02-17 | 芜湖医诺生物技术有限公司 | 脑膜炎双球菌CRISPR-Cas9系统识别的人CXCR4基因的靶序列和sgRNA及其应用 |
| CN105567738A (zh) * | 2016-01-18 | 2016-05-11 | 南开大学 | 使用基因组编辑技术CRISPR-Cas9诱导CCR5Δ32缺失的方法 |
| CN105567688A (zh) * | 2016-01-27 | 2016-05-11 | 武汉大学 | 一种可用于艾滋病基因治疗的CRISPR/SaCas9系统 |
Non-Patent Citations (5)
| Title |
|---|
| 刘岩岩等: "人类免疫缺陷病毒感染辅助受体CCR5与CXCR4研究进展", 《中华医院感染学杂志》 * |
| 刘耕陶: "《当代药理学 第2版》", 30 May 2008, 北京:中国协和医科大学出版社 * |
| 李文刚等: "腺病毒介导反义RNA抑制HIV-1辅助受体CCR5和CXCR4表达", 《中国医学科学院学报》 * |
| 梅兴国: "《微载体药物递送系统》", 30 November 2009, 武汉:华中科技大学出版社 * |
| 金惠铭等: "《高级临床病理生理学》", 31 March 2010, 上海:复旦大学出版社 * |
Cited By (62)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12006520B2 (en) | 2011-07-22 | 2024-06-11 | President And Fellows Of Harvard College | Evaluation and improvement of nuclease cleavage specificity |
| US10323236B2 (en) | 2011-07-22 | 2019-06-18 | President And Fellows Of Harvard College | Evaluation and improvement of nuclease cleavage specificity |
| US10508298B2 (en) | 2013-08-09 | 2019-12-17 | President And Fellows Of Harvard College | Methods for identifying a target site of a CAS9 nuclease |
| US11920181B2 (en) | 2013-08-09 | 2024-03-05 | President And Fellows Of Harvard College | Nuclease profiling system |
| US10954548B2 (en) | 2013-08-09 | 2021-03-23 | President And Fellows Of Harvard College | Nuclease profiling system |
| US11046948B2 (en) | 2013-08-22 | 2021-06-29 | President And Fellows Of Harvard College | Engineered transcription activator-like effector (TALE) domains and uses thereof |
| US10912833B2 (en) | 2013-09-06 | 2021-02-09 | President And Fellows Of Harvard College | Delivery of negatively charged proteins using cationic lipids |
| US12473573B2 (en) | 2013-09-06 | 2025-11-18 | President And Fellows Of Harvard College | Switchable Cas9 nucleases and uses thereof |
| US10597679B2 (en) | 2013-09-06 | 2020-03-24 | President And Fellows Of Harvard College | Switchable Cas9 nucleases and uses thereof |
| US10682410B2 (en) | 2013-09-06 | 2020-06-16 | President And Fellows Of Harvard College | Delivery system for functional nucleases |
| US11299755B2 (en) | 2013-09-06 | 2022-04-12 | President And Fellows Of Harvard College | Switchable CAS9 nucleases and uses thereof |
| US9999671B2 (en) | 2013-09-06 | 2018-06-19 | President And Fellows Of Harvard College | Delivery of negatively charged proteins using cationic lipids |
| US10858639B2 (en) | 2013-09-06 | 2020-12-08 | President And Fellows Of Harvard College | CAS9 variants and uses thereof |
| US10465176B2 (en) | 2013-12-12 | 2019-11-05 | President And Fellows Of Harvard College | Cas variants for gene editing |
| US12215365B2 (en) | 2013-12-12 | 2025-02-04 | President And Fellows Of Harvard College | Cas variants for gene editing |
| US11053481B2 (en) | 2013-12-12 | 2021-07-06 | President And Fellows Of Harvard College | Fusions of Cas9 domains and nucleic acid-editing domains |
| US11124782B2 (en) | 2013-12-12 | 2021-09-21 | President And Fellows Of Harvard College | Cas variants for gene editing |
| US11578343B2 (en) | 2014-07-30 | 2023-02-14 | President And Fellows Of Harvard College | CAS9 proteins including ligand-dependent inteins |
| US10704062B2 (en) | 2014-07-30 | 2020-07-07 | President And Fellows Of Harvard College | CAS9 proteins including ligand-dependent inteins |
| US12398406B2 (en) | 2014-07-30 | 2025-08-26 | President And Fellows Of Harvard College | CAS9 proteins including ligand-dependent inteins |
| US12344869B2 (en) | 2015-10-23 | 2025-07-01 | President And Fellows Of Harvard College | Nucleobase editors and uses thereof |
| US11214780B2 (en) | 2015-10-23 | 2022-01-04 | President And Fellows Of Harvard College | Nucleobase editors and uses thereof |
| US10167457B2 (en) | 2015-10-23 | 2019-01-01 | President And Fellows Of Harvard College | Nucleobase editors and uses thereof |
| US12043852B2 (en) | 2015-10-23 | 2024-07-23 | President And Fellows Of Harvard College | Evolved Cas9 proteins for gene editing |
| US10113163B2 (en) | 2016-08-03 | 2018-10-30 | President And Fellows Of Harvard College | Adenosine nucleobase editors and uses thereof |
| US11999947B2 (en) | 2016-08-03 | 2024-06-04 | President And Fellows Of Harvard College | Adenosine nucleobase editors and uses thereof |
| US10947530B2 (en) | 2016-08-03 | 2021-03-16 | President And Fellows Of Harvard College | Adenosine nucleobase editors and uses thereof |
| US11702651B2 (en) | 2016-08-03 | 2023-07-18 | President And Fellows Of Harvard College | Adenosine nucleobase editors and uses thereof |
| US11661590B2 (en) | 2016-08-09 | 2023-05-30 | President And Fellows Of Harvard College | Programmable CAS9-recombinase fusion proteins and uses thereof |
| US12084663B2 (en) | 2016-08-24 | 2024-09-10 | President And Fellows Of Harvard College | Incorporation of unnatural amino acids into proteins using base editing |
| US11542509B2 (en) | 2016-08-24 | 2023-01-03 | President And Fellows Of Harvard College | Incorporation of unnatural amino acids into proteins using base editing |
| US11306324B2 (en) | 2016-10-14 | 2022-04-19 | President And Fellows Of Harvard College | AAV delivery of nucleobase editors |
| US11820969B2 (en) | 2016-12-23 | 2023-11-21 | President And Fellows Of Harvard College | Editing of CCR2 receptor gene to protect against HIV infection |
| US10745677B2 (en) | 2016-12-23 | 2020-08-18 | President And Fellows Of Harvard College | Editing of CCR5 receptor gene to protect against HIV infection |
| US11898179B2 (en) | 2017-03-09 | 2024-02-13 | President And Fellows Of Harvard College | Suppression of pain by gene editing |
| US12390514B2 (en) | 2017-03-09 | 2025-08-19 | President And Fellows Of Harvard College | Cancer vaccine |
| US12435331B2 (en) | 2017-03-10 | 2025-10-07 | President And Fellows Of Harvard College | Cytosine to guanine base editor |
| US11542496B2 (en) | 2017-03-10 | 2023-01-03 | President And Fellows Of Harvard College | Cytosine to guanine base editor |
| US11268082B2 (en) | 2017-03-23 | 2022-03-08 | President And Fellows Of Harvard College | Nucleobase editors comprising nucleic acid programmable DNA binding proteins |
| US11560566B2 (en) | 2017-05-12 | 2023-01-24 | President And Fellows Of Harvard College | Aptazyme-embedded guide RNAs for use with CRISPR-Cas9 in genome editing and transcriptional activation |
| CN107312798A (zh) * | 2017-06-16 | 2017-11-03 | 武汉大学 | 含特异靶向CCR5基因的gRNA序列的CRISPR/Cas9重组慢病毒载体及应用 |
| CN107312798B (zh) * | 2017-06-16 | 2020-06-23 | 武汉大学 | 含特异靶向CCR5基因的gRNA序列的CRISPR/Cas9重组慢病毒载体及应用 |
| US11732274B2 (en) | 2017-07-28 | 2023-08-22 | President And Fellows Of Harvard College | Methods and compositions for evolving base editors using phage-assisted continuous evolution (PACE) |
| US12359218B2 (en) | 2017-07-28 | 2025-07-15 | President And Fellows Of Harvard College | Methods and compositions for evolving base editors using phage-assisted continuous evolution (PACE) |
| US11319532B2 (en) | 2017-08-30 | 2022-05-03 | President And Fellows Of Harvard College | High efficiency base editors comprising Gam |
| US11932884B2 (en) | 2017-08-30 | 2024-03-19 | President And Fellows Of Harvard College | High efficiency base editors comprising Gam |
| US11795443B2 (en) | 2017-10-16 | 2023-10-24 | The Broad Institute, Inc. | Uses of adenosine base editors |
| US12406749B2 (en) | 2017-12-15 | 2025-09-02 | The Broad Institute, Inc. | Systems and methods for predicting repair outcomes in genetic engineering |
| US12157760B2 (en) | 2018-05-23 | 2024-12-03 | The Broad Institute, Inc. | Base editors and uses thereof |
| US12281338B2 (en) | 2018-10-29 | 2025-04-22 | The Broad Institute, Inc. | Nucleobase editors comprising GeoCas9 and uses thereof |
| US12351837B2 (en) | 2019-01-23 | 2025-07-08 | The Broad Institute, Inc. | Supernegatively charged proteins and uses thereof |
| US11447770B1 (en) | 2019-03-19 | 2022-09-20 | The Broad Institute, Inc. | Methods and compositions for prime editing nucleotide sequences |
| US11643652B2 (en) | 2019-03-19 | 2023-05-09 | The Broad Institute, Inc. | Methods and compositions for prime editing nucleotide sequences |
| US12281303B2 (en) | 2019-03-19 | 2025-04-22 | The Broad Institute, Inc. | Methods and compositions for prime editing nucleotide sequences |
| US11795452B2 (en) | 2019-03-19 | 2023-10-24 | The Broad Institute, Inc. | Methods and compositions for prime editing nucleotide sequences |
| US12473543B2 (en) | 2019-04-17 | 2025-11-18 | The Broad Institute, Inc. | Adenine base editors with reduced off-target effects |
| CN110055281A (zh) * | 2019-04-25 | 2019-07-26 | 山东大学第二医院 | 一种用于制备car-t的慢病毒载体及其构建方法和应用 |
| US12435330B2 (en) | 2019-10-10 | 2025-10-07 | The Broad Institute, Inc. | Methods and compositions for prime editing RNA |
| US12031126B2 (en) | 2020-05-08 | 2024-07-09 | The Broad Institute, Inc. | Methods and compositions for simultaneous editing of both strands of a target double-stranded nucleotide sequence |
| US11912985B2 (en) | 2020-05-08 | 2024-02-27 | The Broad Institute, Inc. | Methods and compositions for simultaneous editing of both strands of a target double-stranded nucleotide sequence |
| US12509680B2 (en) | 2023-05-31 | 2025-12-30 | The Broad Institute, Inc. | Methods and compositions for prime editing nucleotide sequences |
| CN118813625A (zh) * | 2024-06-17 | 2024-10-22 | 天海元祺生物科技(天津)有限公司 | 高度靶向人类HLA-A基因的sgRNA及应用 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106801056A (zh) | 一种sgRNA及其构建的慢病毒载体和应用 | |
| Yu et al. | Simultaneous knockout of CXCR4 and CCR5 genes in CD4+ T cells via CRISPR/Cas9 confers resistance to both X4-and R5-tropic human immunodeficiency virus type 1 infection | |
| JP2022001047A (ja) | Hiv−1感染と複製に必須な遺伝子を切断するcrispr/casの構築物のレンチウイルスによる送達 | |
| WO2017124652A1 (zh) | 使用基因组编辑技术CRISPR-Cas9诱导CCR5Δ32缺失的方法 | |
| CN110462029B (zh) | 无预先免疫步骤的hiv免疫疗法 | |
| CN107034237B (zh) | 一种car-nk细胞及其制备方法与应用 | |
| CN116218779A (zh) | 载体生产 | |
| CN112673094B (zh) | 病毒载体产生 | |
| CN114941011A (zh) | 慢病毒载体及其应用 | |
| US20070172949A9 (en) | Vectors and viral vectors, and packaging cell lines for propagating same | |
| JP2024073653A (ja) | 遺伝子改変リンパ球の製造方法 | |
| CN113226336B (zh) | 一种在细胞中递送基因的方法 | |
| WO1996029393A1 (en) | Recombinant human immunodeficiency virus-producing cell | |
| CN104928292A (zh) | 一种sgRNA的设计方法及构建的慢病毒载体、质粒 | |
| CN114540309A (zh) | 一种用于高效扩增rna病毒的重组细胞及其扩增方法和应用 | |
| US20250101429A1 (en) | siRNAs and shRNAs Targeting HIV and Combinations, Expression Cassettes, Cells and Use Thereof | |
| US8841126B2 (en) | Method for gene transfer | |
| WO2024149284A1 (en) | Regulatory sequences and uses thereof | |
| Nguyen et al. | Efficient Inhibition of HIV Using CRISPR/Cas13d Nuclease System. Viruses 2021, 13, 1850 | |
| WO2012086702A1 (ja) | 遺伝子導入方法 | |
| CN113308494A (zh) | 一种更安全的地中海贫血基因治疗载体、构建方法及其应用 | |
| CN120400253A (zh) | 一种用于提高慢病毒感染nk细胞效率的试剂组合及其应用 | |
| KR20230147060A (ko) | 조작된 nk 세포 및 암 치료 방법 | |
| CN111235151A (zh) | 一种CXCR4基因的shRNA及其应用 | |
| HK40048135A (zh) | 一种在细胞中递送基因的方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170606 |