WO2008004598A1 - Précurseur organoïde produisant de l'érythropoïétine, procédé de fabrication de celui-ci et procédé de traitement d'une maladie liée a l'érythropoïétine - Google Patents
Précurseur organoïde produisant de l'érythropoïétine, procédé de fabrication de celui-ci et procédé de traitement d'une maladie liée a l'érythropoïétine Download PDFInfo
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- WO2008004598A1 WO2008004598A1 PCT/JP2007/063400 JP2007063400W WO2008004598A1 WO 2008004598 A1 WO2008004598 A1 WO 2008004598A1 JP 2007063400 W JP2007063400 W JP 2007063400W WO 2008004598 A1 WO2008004598 A1 WO 2008004598A1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
- A01K67/027—New or modified breeds of vertebrates
- A01K67/0271—Chimeric vertebrates, e.g. comprising exogenous cells
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P13/00—Drugs for disorders of the urinary system
- A61P13/12—Drugs for disorders of the urinary system of the kidneys
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/06—Antianaemics
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2227/00—Animals characterised by species
- A01K2227/10—Mammal
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2267/00—Animals characterised by purpose
- A01K2267/02—Animal zootechnically ameliorated
- A01K2267/025—Animal producing cells or organs for transplantation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
Definitions
- Erythropoietin-producing organoid precursor method for producing the same, and method for treating erythropoietin-related diseases
- the present invention provides an erythropoietin-producing organoid precursor, a method for producing the same, and a method for treating erythropoietin-related diseases.
- the kidney is the main production organ of erythropoietin, and a complication of renal anemia occurs due to a decrease in erythropoietin production due to renal failure.
- this renal anemia is treated by administering purified recombinant protein.
- the power required to administer 1500-3000 units of recombinant protein per dialysis is a very expensive drug (currently ⁇ 5697 for 3000 units).
- the number of dialysis patients which has now expanded to more than 250,000, is expected to increase even more explosively with the aging of the population and the increase in diabetes in the future. Become.
- anti-erythropoietin antibody is produced by the administration of recombinant protein and pure red cell aplasia develops, and there is a need for an alternative treatment to recombinant protein.
- one of the ultimate therapeutic objectives is to produce self-organized stem cell force erythropoietin-producing organoid precursors and transplant them back to individual donors again in vitro as autografts That is.
- human mesenchymal stem cells found in adult bone marrow have recently become clear to maintain plasticity depending on their microenvironment and to be divided into several different cell types (non- Patent literature 2).
- ES cells embryonic stem cells
- human mesenchymal stem cells can also separate autologous bone marrow and can be applied for treatment without significant ethical problems or immunological consequences (non-patented Reference 3).
- Non-Patent Document 1 Transplantation 77, S41-S43 (2004)
- Non-Patent Document 2 Science 276, 71-74 (1997)
- Non-Patent Document 3 birth Defects Res. 69, 250-256 (2003)
- Non-Patent Document 4 J. Neurosci. Res. 60, 511-519 (2000)
- Non-Patent Document 5 Blood 98, 57-64 (2001)
- Non-Patent Document 6 J. Am. So Nephrol.l 1, 2330-2337 (2001)
- Non-Patent Document 7 Methods 24, 35-42 (2001)
- Non-Patent Document 8 J. Clin. Invest. 105, 868-873 (2000)
- an erythropoietin-producing organoid precursor can be produced by transplanting human mesenchymal stem cells to the kidney formation site of a growing fetus and then obtaining each culture step. Completed one.
- an erythropoietin-related organoid precursor was transplanted into the omentum of erythropoietin-related disease recipients (patients) to form an erythropoietin-producing organoid, thereby completing a method for treating erythropoietin-related diseases.
- the present invention relates to
- Erythropoietin obtained by transplanting the sorted mesenchymal stem cells derived from a mammal into a fetus in a pregnant mammalian host or a fetus isolated from a pregnant mammalian host to induce differentiation of the mesenchymal stem cells.
- the transplantation site of the mesenchymal stem cells is the kidney formation site in the fetus, and the transplantation time is still in the stage of immune tolerance of the host immune system A process for producing an erythropoietin-producing organoid precursor.
- An erythropoietin-producing organoid precursor obtained by the following process.
- kits for producing an erythropoietin-producing organoid precursor comprising at least:
- a method for treating an erythropoietin-related disease comprising transplanting the erythropoietin-producing organoid precursor according to any one of 5 to 7 above into a greater omentum of a mammal.
- the therapeutic method according to 9 above which is a mesenchymal stem cell of a recipient. It consists of.
- the present invention provides an erythropoietin-producing organoid necessary for the treatment of erythropoietin-related diseases and a method for producing the same.
- erythropoietin-producing organoid precursor that can maintain erythropoietin expression for a long period of time and can regulate erythropoietin expression level.
- FIG. 1 shows the appearance of erythropoietin-producing organoid transplanted into the greater omentum.
- FIG. 2 shows a systematic analysis of erythropoietin-producing organoid (2 weeks) transplanted into the greater omentum.
- FIG. 4 is an electron micrograph of an erythropoietin-producing organoid transplanted into the greater omentum. Red blood cells are seen in the glomerular snare, indicating that they are integrated with the recipient's bloodstream.
- FIG. 5 shows the results of expression of human erythropoietin mRNA using RT-PCR.
- FIG. 7 shows the results of measurement of serum erythropoietin concentration in each rat before and after anemia.
- FIG. 8 shows the results of anemia improvement effect of erythropoietin-producing organoids.
- FIG. 9 shows the results of confirming GDNF sustained release using a temperature-sensitive polymer.
- FIG. 10 The results show that human mesenchymal stem cell-derived parts are enlarged by GDNF sustained release with a polymer.
- the present invention induces differentiation of mesenchymal stem cells by transplanting sorted mesenchymal stem cells derived from a mammal into a fetus in a pregnant mammal host or a separated fetus from a pregnant mammal host.
- the mesenchymal stem cell transplant site is the kidney formation site in the fetus, and the time of transplantation is still tolerated by the host immune system. It is a stage.
- the “erythropoietin-producing organoid (organ-like tissue)” in the present invention is a cell tissue that is not a single cell, and has the ability to produce erythropoietin, which is a function inherent in the kidney.
- erythropoietin-producing organoids except for their surface, are in contact with each other in three dimensions, and neighboring cells exchange information through various cell-to-cell connections, and simply produce erythropoietin. It has the ability to produce an Ellis mouth pouchin.
- the “precursor” means a state that has factors necessary for the erythropoietin production function and the production preparation function, but does not exhibit the erythropoietin production function and the production preparation function due to environmental factors.
- the erythropoietin-producing organoid precursor is preferably a mammal. It becomes an erythropoietin-producing organoid when transplanted to the great omentum of mammals, especially humans. That is, the erythropoietin-producing organoid precursor exhibits an erythropoietin-producing function and a production-preparing function when placed in the omentum environment of mammals, particularly humans.
- erythropoietin-producing organoid precursors can become erythropoietin-producing organoids under culture conditions that are similar to the environment of mammals, particularly human omentum.
- the "erythropoietin production and preparation function" in the present invention refers to a large amount of erythropoietin when erythropoietin is required more in the recipient (patient) body than in a normal state (such as in anemia). To produce (the amount necessary to improve anemia). However, when the recipient (patient) is in a normal state (such as improved anemia), it produces the amount of erythropoietin necessary to maintain the body's normal state.
- the erythropoietin-producing organoid of the present invention is capable of producing the amount of erythropoietin necessary for the recipient (patient) and the necessary nutrition from the blood vessels in the greater omentum, compared to the conventional erythropoietin-producing cells. Incorporation is very different in that erythropoietin can be produced continuously for a long time.
- the "erythropoietin-related disease" in the present invention is a disease related to a decrease in erythropoietin output including anemia associated with renal failure, diabetes, ulcer, cancer, infection, dialysis, surgery, and acupuncture. It is. In particular, anemia due to chronic renal failure is a serious problem because erythropoietin cannot be produced due to progressive renal parenchyma and liver function destruction, and the erythropoietin concentration in the circulatory system does not increase.
- Disease patients are all mammals including humans. For example, humans, pets such as sals, sushi, hidges, pigs, goats, horses (especially horses), inu, cats, usa, horses, mussels, guinea pigs, rats, mice, etc. is there.
- Other examples include ungulates such as ushi, hidge, pig, goat and horse.
- a rat or the above-mentioned ungulate genetically modified animal, particularly a transgenic animal is preferably exemplified.
- mesenchymal stem cells derived from mammals those derived from the recipient are preferably used.
- the recipient when the recipient is a human, it is fractionated from the bone marrow, blood, or umbilical cord blood of the person who is transplanted with the erythropoietin-producing organo precursor.
- the erythropoietin-producing organo precursor Considering adult erythropoietin-related diseases, particularly patients with renal failure, autologous bone marrow-derived human mesenchymal stem cells are preferred.
- the sorting method is based on a general surgical medical technique. Sorted cells should be selected under optimal conditions and cultured for no more than 2-5 cell passages. For the purpose of continuing the culture without transforming human mesenchymal stem cells, use a culture kit dedicated to human mesenchymal stem cells manufactured by Cambrex BioSdence.
- human mesenchymal stem cells introduce a desired gene using techniques such as adenovirus and / or retrovirus.
- a gene is introduced so as to express glial cell line-derived neurotrophic factor-GDNF. This transformation has confirmed that the formation rate of injected stem cell-derived erythropoietin-producing organoid precursor is increased by 5.0 ⁇ 4.2% to 29.8 ⁇ 9.2%.
- GDNF is gradually released by injecting a GDNF-containing polymer, particularly meviol gel, which is a temperature-sensitive gel, with a mesenchymal stem cell derived from a mammal. be able to.
- a GDNF-containing polymer particularly meviol gel, which is a temperature-sensitive gel
- the prepared mammalian mesenchymal stem cells are then transplanted into a fetus in a pregnant mammalian host. That is, mesenchymal stem cells derived from mammals can be transplanted directly into an in vivo fetus, and an erythropoietin-producing organoid precursor can be formed in the eclampsia.
- the transplantation method is a general surgical medical method, for example, a system using a pig as a host, and a mesenchymal stem cell derived from mammals is injected into a fetus in an eclampsia using a micropipette or the like under an echo.
- the amount of cells to be transplanted is 0.5 to 1.0 ⁇ 10 3 .
- a mesenchymal stem cell derived from a mammal is directly transplanted into an in vivo embryo of a large pregnant mammal such as a pig, and the growth is continued in vivo as it is, and an erythropoietin-producing organoid precursor is transplanted. Let your body grow. Thereafter, the steps of “whole embryo culture” or “organ culture” shown below can be added, but the erythropoietin-producing organoid precursor is not particularly necessary because it is sufficiently grown.
- human Use mesenchymal stem cells is preferably, human Use mesenchymal stem cells.
- the prepared mesenchymal stem cells derived from mammals are transplanted into a fetus isolated from a pregnant mammal host (uterus), and then organs are cultured in vitro using whole embryo culture. It can be matured in the fetus until the initial stage of formation (erythropoietin-producing organoid) is completed and then further cultured in organ culture to become an erythropoietin-producing organoid precursor. Furthermore, an erythropoietin-producing organoid can be obtained by transplanting an erythropoietin-producing organoid precursor into the greater omentum of mammals. Preferably, human mesenchymal stem cells are used.
- mesenchymal stem cells derived from mammals can be separated into erythropoietin-producing organoids, and this novel erythropoietin-producing organoid has a function of preparing erythropoietin production. .
- E stage embryo date 9-12, in particular E10-12, more preferably E10-11.5, most preferably El 1.5 was suitable.
- the same stage embryo can be suitably used even in a large mammalian pig or the like. However, before and after that, it can be applied by selecting conditions. However, what is important is that at least the time of transplantation is that the stage of embryo development is still the stage of immune tolerance of the host immune system.
- a feature of the present invention is the selection of the site of implantation into the fetus.
- the transplantation site of mammalian-derived mesenchymal stem cells into the fetus is a site corresponding to development in the host kidney. Therefore, the transplantation needs to be at a time when it can be determined that it is an equivalent part of the kidney. It is preferable that the kidney blasts are in a budding state before the start of development.
- mesenchymal stem cells derived from mammals can be separated into erythropoietin-producing organoids by transplanting around the ureteric bud germination site, more specifically between the segment and the side plate.
- it is transplanted into the metanephric mesoderm.
- human mesenchymal stem cells are used.
- “Whole embryo culture” in the present invention is performed when transplanting mesenchymal stem cells derived from mammals into a fetus isolated from a pregnant mammalian host (uterus).
- An overview of whole embryo culture is that the uterus is separated from the mother and the fetus is cut from the outer membrane layer, including the uterine wall, decidua, and Reichert membrane.
- a mesenchymal stem cell derived from a mammal is transplanted into a fetus obtained by removing the separated one and cultured in a culture bottle or the like.
- the purpose of culturing the erythropoietin-producing organoid precursor which is the purpose of “whole embryo culture” in the present invention, can be achieved, some improvements and Z or some steps are deleted from the above culture method. May be. More specifically, it is as follows, but is not particularly limited.
- Non-patent Document 7 All embryos are cultured in vitro by the method described previously (Non-patent Document 7) except that some modifications are made.
- the eclampsia is removed from the mother body under anesthesia.
- Rat embryos of E9-12, in particular E10-12, more preferably E10-11.5, most preferably El 1.5 are separated from the outer membrane layer including the eclampsia wall, decidua and Reichert membrane.
- the yolk sac and the amniotic membrane are opened so that mammalian mesenchymal stem cells can be injected, but the chorion allanto placenta remains intact.
- Embryos that have been successfully injected with mesenchymal stem cells derived from mammals are cultured in a culture bottle containing 3 ml of a culture medium (glucose, penicillin G, streptomycin, and amphotericin B) in centrifuged rat serum.
- the culture bottle rotates in an incubator (model number RKI10-0310, Ikemoto, Tokyo).
- the culture time is 12 hours to 60 hours, preferably 24 hours to 48 hours, and most preferably 48 hours.
- the morphological and functional evaluation is carried out to confirm the organ progenitor of the erythropoietin-producing organoid precursor. After this confirmation, the organ prototype is separated from the embryo, and preferably the following organ culture is performed.
- human mesenchymal stem cells are used.
- organ culture in the present invention, the above organ prototype is placed on a filter, and DMEM is added to the dish below. Then, the dish is cultured in a 5% CO incubator.
- the culture time is 12 hours to 144 hours, preferably 18 hours to 72 hours, more preferably 24 hours to 48 hours, and most preferably 24 hours. In other words, it is most efficient to transfer to the omentum at 24 hours.
- the culture temperature is 20 ° to 45 °, preferably 25 ° to 40 °, and most preferably 37 °.
- some improvements and Z or some steps may be omitted from the culture method.
- the force described in J. Clin. Invest. 105, 868-873 (2000) is not particularly limited.
- the method of “transplanting erythropoietin-producing organoid precursor to the greater omentum of mammals” in the present invention is a force that can be performed by a normal surgical prescription, for example, grasping a thread and fabric to be transplanted with a sharp scissors. This is a method of making a slight cut on the surface of the omental fat thread and weaving at the tip of the insulator and embedding the tissue therein. It can also be transplanted to the greater omentum using an endoscope.
- the whole embryo culture is performed for 2 to 60 hours, then the organ culture is performed for 12 to 36 hours, and a series of operations for transplantation into the greater omentum is referred to as “improved relay”. This is referred to as “culture”.
- the "kit for producing erythropoietin-producing organoid precursor" in the present invention includes at least the following.
- Rats and pigs are preferred, but not particularly limited as long as the pregnant mammal or pregnant mammal power described herein is a separated fetus! ⁇ .
- an erythropoietin-producing organoid precursor is transplanted into the greater omentum of a recipient (patient).
- the erythropoietin-producing organoid precursor in the greater omentum becomes an erythropoietin-producing organoid.
- the size of the erythropoietin-producing organoid precursor to be transplanted does not need to be approximately the same size as the kidney, which is the erythropoietin-producing organ, and is 1/50 to 1/10 the size of the entire kidney. Is enough.
- the transplanted cells In order to prevent the formed erythropoietin-producing organoid force host-derived antigenic substance from being contaminated, it is effective to convert the transplanted cells into the following traits. That is, when human mesenchymal stem cells are used, human cells derived from human mesenchymal stem cells and cells derived from host animals are mixed in the formed erythrobotin-producing organoid. Since mixed host-derived cells may cause immune rejection when transplanting erythropoietin-producing organoid precursor to the human body, after hosting erythropoietin-producing organoid precursor, the host-derived cells are thoroughly removed. It needs to be removed.
- a host animal capable of inducing programmed cell death in a regulated manner is prepared, and an erythropoietin-producing organoid precursor is formed in this animal.
- an erythropoietin-producing organoid precursor is formed in this animal.
- cell death is induced specifically in the host cell, and the host-derived cells are introduced before transplantation into the human body. Remove completely.
- wild-type Sprague-Dawley rats were purchased from Sankyo Lab Service (Tokyo) and used. The midpoint of the day when the vaginal plug was observed was 0.5 days. Animals were housed in ventilated (positive pressure airflow) racks and mated and raised in the absence of pathogenic bacteria. All experimental procedures were approved by the Jikei University School of Medicine Animal Experiment Committee.
- Human mesenchymal stem cells that were also able to obtain bone marrow strength from healthy volunteers were used.
- a replication-deficient recombinant adenovirus having human GDNF cDNA (AxCAhGDNF) was prepared and purified as described above (Non-patent Document 4).
- a packaging cell ( ⁇ -crip) producing a recombinant retrovirus having a bacterial LacZ gene (MFG-LacZ) was donated by H. Hamada (Sapporo Medical University). Adenovirus infection and retrovirus infection were performed as described above (Non-patent Documents 5 and 6). Cells were labeled with 1,1'-dioctadecy ⁇ 3,3,3 ', 3 in tetramethylindocarbocyanine (Dil (MolecularProbes) 0.25% (wt / vol)) Using a pipette, injection was made using a micropipette to the germination site of the ureter bud.
- Embryos that have been confirmed to be successfully injected are immediately centrifuged in 100% rat serum with glucose (lOmg / ml), penicillin G (100 units / ml), streptomycin (100 ⁇ g / ml), and amphotericin B (0.25 ⁇ m).
- the cells were cultured in a 15-ml culture bottle containing 3 ml of a culture medium supplemented with g / ml).
- the culture bottle was rotated in an incubator (model number RKI10-0310, Ikemoto, Tokyo). Rat embryos were grown ex vivo with a 48 hour culture period.
- the organ prototype after whole embryo culture was placed on a 12 mm diameter 0.4 m Nucleopore filter (Corning-Coster), and 400 ⁇ L of 20% PBS DMEM was added to the dish below.
- the dish was cultured in an 5% CO incubator for 24 hours at 37 degrees.
- the erythropoietin-producing organoid precursor obtained in 3) above is pinched with a sharp insulator, and a slight cut is made on the surface of the omental fat thread and weaving at the tip of the insulator, and the erythrobotine-producing organoid precursor is embedded therein. It is. At the same time, hemirectomization of rats was performed. 2 weeks Soon after, the rat was opened.
- Fig. 1 shows a systematic analysis of the grown erythroid pouchin-producing organoid.
- the blood vessels of the erythropoietin-producing organoid were filled with red blood cells that were not found before transplantation, indicating that the blood circulation was histologically clear.
- glomerular mesangial cells desmin positive
- WT-1 and synaptopodin positive cells highly differentiated glomerular epithelial cells
- an erythropoietin-producing organoid precursor was transplanted into the omentum of a LacZ rat, where the rat blood vessels were stained blue with LacZ.
- the erythropoietin-producing organoid precursor before omental transplantation and the erythropoietin-producing organoid force after omentum transplantation were confirmed using RT-PCR to express human erythropoietin mRNA. Furthermore, the erythropoietin-producing organoid after omental transplantation specifically expresses human erythropoietin, and it is determined whether anti-erythropoietin antibody and anti-human ⁇
- RNA Extract total RNA with RNeasy mini kit (QIAGEN GnbH, Hilden Germany) cDNA was synthesized using ript II Reverse Transcriptase (Life Technologies BRL, Rockville, MD) according to the package insert protocol.
- Human erythropoietin human EPO: 30 Obp
- rat erythropoietin rat EPO: 112 bp
- human microglobulin hMG
- rGAPDH rat G APDH
- Sense sequence of human microglobulin caggtttact cacgtcatcc age (IJ No. 1)
- Antisense sequence of human microglobulin tcacatggtt cacacggcag g (SEQ ID No. 2)
- sense sequence of rat GAPDH catcaacgac cccttcatt (SEQ ID No. 3)
- Rat GAPDH antisense sequence actccacgac atactcagca c (SEQ ID NO: 4)
- Human erythropoietin sense sequence tacgtagcct cacttcactg ctt ( ⁇ ⁇ ⁇ [J number 5)
- Human erythropoietin antisense sequence g Ca g aaa gta tccgctgtga gtgttc (SEQ ID NO: 4) 6)
- Rat erythropoietin sense sequence tctgg gagcc cagaa ggaag ccat (SEQ ID NO: 7)
- Rat erythropoietin antisense sequence ctgga gtgtc catgg gacag (SEQ ID NO: 8) Reaction conditions:
- Human microglobulin and rat GAPDH conditions 94 ° C 10 minutes, 94 ° C 1 minute, 66 ° C 43 cycles, then 66 ° C 10 minutes
- Rat erythropoietin conditions 95 ° C 15 minutes, 95 ° C 30 seconds, 55 ° C 30 seconds, 72 ° C 30 seconds 40 cycles, then 72 ° C 10 minutes
- Paraffin-embedded tissue fixed with 10% formalin was sliced to 6 ⁇ m. After deparaffinization with xylene and ethanol, antigenic activation was performed with TUF (Target Unmasking Fluid, manufactured by MONOSAN). Two primary antibodies: goat anti-human EPO antibody: SANTA CRUZ (used at x200) and mouse anti-human ⁇ -microglobulin antibody: PharMingen (x400 Was used) at 4 ° C.
- FIG. 5 shows the results of RT-PCR. From the results in Fig. 5, the erythropoietin-producing organoid precursor before omentum transplantation does not express erythropoietin mRNA, but the erythropoietin-producing organoid after omentum transplantation expresses erythropoietin mRNA! (1)). This erythropoietin mRNA was confirmed to be a human-derived gene sequence (Fig. 5 (2)).
- FIG. 6 shows that erythropoietin is stained in the same Cf position as human-derived microglobulin in FIG. 6 (5) (FIG. 6 (4) shows (3). ) And (5). That is, it was confirmed that the erythropoietin-producing organoid after transplantation of the greater omentum specifically expresses human erythropoietin mRNA that is different from host-derived (rat) erythropoietin.
- lane 1 erythropoietin-producing organoid precursor.
- Normal rats (lane 3 in FIG. 7) were prepared. Part of the blood was used for erythropoietin measurement. After 24 hours, anesthesia was performed again, blood was collected by cardiac puncture, and erythropoietin concentration was measured. The erythropoietin concentration was measured using a RIA kit manufactured by Mitsubishi Igakuatron. By the above method, the serum erythropoietin concentration of each rat before and after anemia was measured.
- Fig. 7 shows the results of measuring the serum erythropoietin concentration in each rat before and after anemia. Rats after bilateral nephrectomy showed a strong increase in erythropoietin (lane 1 in Fig. 7) strength. In rats with erythropoietin-producing organoids in the greater omentum, the serum erythropoietin concentration increased significantly (Fig. 7). Lane 2). This indicates that erythropoietin-producing organoids can produce erythropoietin.
- Rats were injected with anti-glomerular basement membrane antibody to cause acute nephritis. Two weeks later, a nephrectomy was performed (the erythropoietin-producing organoid precursor was transplanted into the greater omentum at this point). This significantly reduces the ability of the kidney to produce erythropoietin and delays the improvement of anemia. Therefore, we confirmed that this delay can be normalized by erythropoietin produced by erythropoietin-producing organoids.
- the treatment of rats is as follows. 1. Anti-basement membrane antibody was administered to rats and nephritis was induced. Two weeks later, nephrectomy was performed (country in Figure 8: no transplantation of erythropoietin-producing organoid precursor).
- Rats were administered anti-basement membrane antibody to induce nephritis, and unilateral nephrectomy was performed 2 weeks later ( ⁇ in Fig. 8: transplantation of erythropoietin-producing organoid precursor).
- Rats were administered anti-basement membrane antibody to induce nephritis.
- ⁇ In FIG. 8 Nephrectomy and erythropoietin-producing organoid precursor not transplanted: normal rat).
- FIG. 8 shows the results of the anemia-improving effect of erythropoietin-producing organoids.
- One-nephrectomy rat (without erythropoietin-producing organoid precursor transplantation) was shown to have a significant delay in improving anemia compared to normal rats ( Figure 8).
- rats with erythropoietin-producing organoids in the greater omentum had improved anemia in almost the same course as normal rats, even though they were removed from a single nephrectomy ( ⁇ in Figure 8). This indicates that erythropoietin produced in the omentum of erythropoietin produced the effect of improving anemia.
- GDNF sustained release is possible by mixing with GDNF-containing polymer We confirmed whether it was.
- the culture supernatant of COS-1 cells infected with recombinant GDNF was dissolved in a commercially available meviol gel.
- GDNF eluting during 0-24 hours, 24-48 hours and 48-72 hours was confirmed by Western plot (FIG. 9).
- the rightmost “hMSCs” in FIG. 9 shows the control of the culture supernatant of human mesenchymal stem cells into which GDNF has been introduced using adenovirus.
- FIG. 9 it was confirmed that a sufficient amount of GDNF was eluted even during 48 to 72 hours.
- GDNF dissolved in mebiol gel can be sustained-released.
- GDNF gene was introduced, and compared with human mesenchymal stem cells (Fig. 10 (2)), the portion derived from human mesenchymal stem cells (blue in the figure) by GDNF sustained release. Have been widely stained.
- GDNF gene-introduced human mesenchymal stem cells using adenovirus the same degree of staining was stained (not shown).
- GDNF can be sustainedly released by using GDNF-containing polymer, especially meviol gel, without using adenovirus for gene transfer. By mixing and injecting this gel with human mesenchymal stem cells, It was shown that expansion is possible. Industrial applicability
- the present invention enables a new development of a method for treating erythropoietin-related diseases.
- a recipient who is receiving an expensive recombinant protein, sorts out its own mesenchymal stem cells, If this is transplanted into a pregnant host animal and transplanted into its own greater omentum after a certain growth, production of an organoid carrying an erythropoietin production function and production preparation function that can be continued for a long time can be achieved.
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- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Pharmacology & Pharmacy (AREA)
- Environmental Sciences (AREA)
- Diabetes (AREA)
- Cell Biology (AREA)
- Hematology (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Obesity (AREA)
- Urology & Nephrology (AREA)
- Endocrinology (AREA)
- Emergency Medicine (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07768152A EP2042591A4 (en) | 2006-07-04 | 2007-07-04 | ERYTHROPOETIN-PRODUCING ORGANOID PREPARATION, METHOD FOR THE CONSTRUCTION THEREOF, AND METHOD FOR THE TREATMENT OF A DISEASE-CONTAINED ERYTHROPOETIN |
| JP2008523716A JPWO2008004598A1 (ja) | 2006-07-04 | 2007-07-04 | エリスロポエチン産出オルガノイド前駆体及びその製造方法並びにエリスロポエチン関連疾患の治療方法 |
| CA002658060A CA2658060A1 (en) | 2006-07-04 | 2007-07-04 | Erythropoietin-producing organoid precursor, production method thereof, and method for treating erythropoietin-related disorder |
| US12/307,133 US20100095388A1 (en) | 2006-07-04 | 2007-07-04 | Erythropoietin-Producing Organoid Precursor, Production Method Thereof, and Method For Treating Erythropoietin-Related Disorder |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-185004 | 2006-07-04 | ||
| JP2006185004 | 2006-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008004598A1 true WO2008004598A1 (fr) | 2008-01-10 |
Family
ID=38894565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/063400 Ceased WO2008004598A1 (fr) | 2006-07-04 | 2007-07-04 | Précurseur organoïde produisant de l'érythropoïétine, procédé de fabrication de celui-ci et procédé de traitement d'une maladie liée a l'érythropoïétine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20100095388A1 (ja) |
| EP (1) | EP2042591A4 (ja) |
| JP (1) | JPWO2008004598A1 (ja) |
| CA (1) | CA2658060A1 (ja) |
| WO (1) | WO2008004598A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010001951A1 (ja) | 2008-07-02 | 2010-01-07 | 株式会社大塚製薬工場 | 人工腎臓前駆体およびその製造方法 |
| WO2010081942A1 (fr) | 2008-12-05 | 2010-07-22 | Alex Hr Roustaei | Piles ou micro piles a hydrogene avec un generateur d ' hydrogene |
| WO2010100345A2 (fr) | 2009-03-02 | 2010-09-10 | Alex Hr Roustaei | Systeme intelligent de production d'énergie solaire a haut rendement en chambres multiples de capture muni de cellules photovoltaiques a base des nano particules |
| WO2011155641A1 (en) * | 2010-06-10 | 2011-12-15 | Kyoto University | Method for producing erythropoietin, and method for isolating erythropoietin-producing cells |
| WO2014071443A1 (en) * | 2012-11-12 | 2014-05-15 | Yew Republic Pty Ltd | A system for selecting a surfboard |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006185004A (ja) | 2004-12-27 | 2006-07-13 | Ricoh Co Ltd | 書画処理装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7326570B2 (en) * | 2000-06-16 | 2008-02-05 | The Regents Of The University Of California | Induction of tubular morphogenesis using pleiotrophin |
| US20020197240A1 (en) * | 2001-05-15 | 2002-12-26 | Chiu Ray C. | Marrow stem cell (MSC) transplantation for use in tissue and/or organ repair |
-
2007
- 2007-07-04 JP JP2008523716A patent/JPWO2008004598A1/ja active Pending
- 2007-07-04 CA CA002658060A patent/CA2658060A1/en not_active Abandoned
- 2007-07-04 WO PCT/JP2007/063400 patent/WO2008004598A1/ja not_active Ceased
- 2007-07-04 US US12/307,133 patent/US20100095388A1/en not_active Abandoned
- 2007-07-04 EP EP07768152A patent/EP2042591A4/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006185004A (ja) | 2004-12-27 | 2006-07-13 | Ricoh Co Ltd | 書画処理装置 |
Non-Patent Citations (14)
| Title |
|---|
| BIRTH DEFECTS RES., vol. 69, 2003, pages 250 - 256 |
| BLOOD, vol. 98, 2001, pages 57 - 64 |
| HAMMERMAN M.R.: "Xenotransplantation of developing kidneys", AM. J. PHYSIOL., vol. 283, no. 4, PART 2, October 2002 (2002-10-01), pages F601 - F606, XP002259738 * |
| J. AM. SOC. NEPHROL., vol. 11, 2001, pages 2330 - 2337 |
| J. CLIN. INVEST., vol. 105, 2000, pages 868 - 873 |
| J. NEUROSCI. RES., vol. 60, 2000, pages 511 - 519 |
| METHODS, vol. 24, 2001, pages 35 - 42 |
| ROGERS S.A. AND HAMMERMAN M.R.: "Transplantation of metanephtoi after preservation in vitro", AM. J. PHYSIOL., vol. 281, no. 2, PART 2, August 2001 (2001-08-01), pages R661 - R665, XP002259736 * |
| ROGERS S.A. AND HAMMERMAN M.R.: "Transplantation of rat metanephroi into mice", AM. J. PHYSIOL., vol. 280, no. 6, PART 2, June 2001 (2001-06-01), pages R1865 - R1869, XP002259735 * |
| SCIENCE, vol. 276, 1997, pages 71 - 74 |
| See also references of EP2042591A4 |
| TRANSPLANTATION, vol. 77, 2004, pages S41 - S43 |
| YOKOO T. ET AL.: "Hassei Process o Mochiita Jinzo Saiseiho no Kaihatsu", DAI 48 KAI ANNUAL MEETING OF THE JAPANESE SOCIETY OF NEPHROLOGY YOKOSHU, vol. 47, no. 3, 25 May 2005 (2005-05-25), pages 249, XP003020954 * |
| YOKOO T.: "Ishu Taiji no Hassei Process o Mochiita Jinzo Saiseiho no Kaihatsu", DAI 50 KAI ANNUAL MEETING OF THE JAPANESE SOCIETY OF NEPHROLOGY YOKOSHU, vol. 49, no. 3, 25 April 2007 (2007-04-25), pages 220, XP003020955 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010001951A1 (ja) | 2008-07-02 | 2010-01-07 | 株式会社大塚製薬工場 | 人工腎臓前駆体およびその製造方法 |
| US9758766B2 (en) | 2008-07-02 | 2017-09-12 | Otsuka Pharmaceutical Factory, Inc. | Artificial kidney precursor and process for production thereof |
| WO2010081942A1 (fr) | 2008-12-05 | 2010-07-22 | Alex Hr Roustaei | Piles ou micro piles a hydrogene avec un generateur d ' hydrogene |
| WO2010100345A2 (fr) | 2009-03-02 | 2010-09-10 | Alex Hr Roustaei | Systeme intelligent de production d'énergie solaire a haut rendement en chambres multiples de capture muni de cellules photovoltaiques a base des nano particules |
| WO2011155641A1 (en) * | 2010-06-10 | 2011-12-15 | Kyoto University | Method for producing erythropoietin, and method for isolating erythropoietin-producing cells |
| WO2014071443A1 (en) * | 2012-11-12 | 2014-05-15 | Yew Republic Pty Ltd | A system for selecting a surfboard |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2042591A4 (en) | 2010-03-31 |
| JPWO2008004598A1 (ja) | 2009-12-03 |
| US20100095388A1 (en) | 2010-04-15 |
| CA2658060A1 (en) | 2008-01-10 |
| EP2042591A1 (en) | 2009-04-01 |
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