WO2022019182A1 - 腱又は靭帯の治療用ゲル材料 - Google Patents
腱又は靭帯の治療用ゲル材料 Download PDFInfo
- Publication number
- WO2022019182A1 WO2022019182A1 PCT/JP2021/026352 JP2021026352W WO2022019182A1 WO 2022019182 A1 WO2022019182 A1 WO 2022019182A1 JP 2021026352 W JP2021026352 W JP 2021026352W WO 2022019182 A1 WO2022019182 A1 WO 2022019182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- tendon
- ligament
- polymer
- gel material
- 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.)
- Ceased
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/52—Hydrogels or hydrocolloids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/26—Mixtures of macromolecular compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/10—Materials or treatment for tissue regeneration for reconstruction of tendons or ligaments
Definitions
- the present invention relates to a gel material suitable for treating tendons or ligaments, and a method for treating tendons or ligaments using the gel material.
- Non-Patent Document 1 the healed tendon ligament is reduced to the same strength as the scar tissue and cannot exert the original function of the tendon. This causes problems in postoperative re-rupture and return to sports, and reduces the QOL (Quality Of Life) of many patients.
- the present inventors used a hydrogel having a structure in which a hydrophilic polymer cross-linked between molecules to form a three-dimensional network structure, and used a hydrogel to circumvent the damaged or torn tendon ligament.
- a hydrogel By coating with the hydrogel, it is possible to suppress the invasion of scar tissue containing type III collagen as a main component, and it has been found that endogenous healing by intratendon cells is efficiently brought about, and the present invention is completed. It has reached.
- the present invention in one aspect, relates to a gel material suitable for the treatment of tendon or ligament injury or rupture, more specifically.
- the nucleophilic functional group is selected from the group consisting of a thiol group and an amino group, and the electrophilic functional group is a maleimidyl group, an N-hydroxy-succinimidyl (NHS) group, or a sulfosuccinimidyl group.
- the gel material according to ⁇ 4> above which is selected from the group consisting of a phthalimidyl group, an imidazole group, an acryloyl group, a nitrophenyl group, and -CO 2 PhNO 2.
- a kit for producing the gel material according to any one of ⁇ 1> to ⁇ 7> which provides a kit containing two or more solutions containing a hydrophilic polymer.
- the invention relates to the treatment of tendons or ligaments with the gel material, more specifically.
- a method for treating damage or rupture of a tendon or ligament which comprises covering the circumference of the tendon or ligament after suturing surgery with the gel material according to any one of ⁇ 1> to ⁇ 7>above;
- the gel material according to any one of ⁇ 1> to ⁇ 7> above suppresses the expression of type III collagen in the tendon or ligament, including covering the circumference of the tendon or ligament after suture surgery.
- Method for treating damage or rupture of a tendon or ligament, wherein a polymer solution A containing a first hydrophilic polymer having one or more nucleophilic functional groups at the side chain or the end and a polymer solution A at the side chain or the end.
- the step of preparing the polymer solution B containing the second hydrophilic polymer having one or more electrophilic functional groups, the polymer solutions A and B are applied around the tendon or ligament after the suture operation to be hydrophilic.
- the step of forming a polymer gel having a structure in which a three-dimensional network structure is formed by cross-linking the sex polymer and coating the circumference of the tendon or ligament, and the coating of the type III collagen in the tendon or ligament.
- the therapeutic method comprising a step of suppressing expression; ⁇ 12> The therapeutic method according to ⁇ 11> above, wherein the polymer gel has a polymer content in the range of 1 to 5% by weight and an elastic modulus in the range of 100 to 10,000 Pa. ⁇ 13> The therapeutic method according to ⁇ 11> or ⁇ 12> above, wherein the first and second hydrophilic polymers have a polyether skeleton or a polyvinyl skeleton; ⁇ 14> The treatment method according to any one of ⁇ 11> to ⁇ 13> above, wherein the first and second hydrophilic polymers are 2-branched, 3-branched or 4-branched polyethylene glycol; and ⁇ 15.
- the nucleophilic functional group is selected from the group consisting of a thiol group and an amino group
- the electrophilic functional group is a maleimidyl group, an N-hydroxy-succinimidyl (NHS) group, a sulfosuccinimidyl group, a phthalimidyl.
- the above ⁇ 11> to ⁇ 14> selected from the group consisting of a group, an imidazole group, an acryloyl group, a nitrophenyl group, an isothiocyanate group, an aldehyde group, an iodoacetamide group, a vinylsulfone group, and -CO 2 PhNO 2.
- the treatment method according to any one is provided.
- the present invention also relates to a screening method using the above gel material, more specifically, the present invention.
- a screening method using the above gel material more specifically, the present invention.
- a method for screening a drug effective for treating damage or rupture of a tendon or ligament, wherein the tendon or ligament coated with the gel material according to any one of ⁇ 1> to ⁇ 7> is described in I. It provides the screening method including the steps of searching for and identifying a compound having a proliferative activity of type collagen.
- the gel material and the therapeutic method of the present invention it is possible to suppress the invasion of inflammatory cells and fibroblasts from around the affected area, and type III, which has been considered inevitable in the healing process of the tendon ligament. It is possible to suppress or eliminate the invasion of scar tissue containing collagen as a main component. As a result, it promotes endogenous healing based on the expression of type I collagen by the cells in the tendon, and can efficiently restore the original function of the tendon, which is an effect that could not be obtained by the conventional method.
- FIG. 1 is an image of a flexor tendon (gel group) coated with the gel of the present invention and a flexor tendon (control group) not covered with gel on the 21st day after surgery.
- FIG. 2 is an image showing the tissue cross sections of the gel-coated flexor tendon (gel group) and the non-gel-coated flexor tendon (control group) of the present invention.
- the gel material of the present invention is a gel material containing a polymer gel for suppressing the expression of type III collagen in the treatment of tendon or ligament injury or rupture.
- the polymer gel is a hydrogel having a structure in which a three-dimensional network structure is formed by cross-linking a hydrophilic polymer, and has a polymer content in the range of 1 to 5% by weight and 100 to 10,000 Pa. It is characterized by having a range of elastic modulus.
- the "elastic modulus” means the storage elastic modulus G'.
- hydrophilic polymer constituting the above polymer gel can form a hydrogel by being crosslinked, and more specifically, in the final gel, the polymer is used.
- the hydrophilic polymer a polymer known in the art can be used as long as it can form a hydrogel by a gelation reaction (crosslinking reaction or the like) in an aqueous solution, but a polyether skeleton is preferable.
- it is a hydrophilic polymer having a polyvinyl skeleton.
- Typical examples of the polymer having a polyether skeleton include a polymer having a polyalkylene glycol skeleton.
- Preferred are polymer species having a plurality of branched polyethylene glycol skeletons, with bifurcated, 3-branched or 4-branched polyethylene glycol being particularly preferred.
- a gel composed of a 4-branched polyethylene glycol skeleton is generally known as a Tetra-PEG gel, and has an electrophilic functional group such as an active ester structure and a nucleophilic functional group such as an amino group at the terminals thereof.
- a network structure network is constructed by AB type cross-end coupling reaction between two kinds of four-branched polymers (Massunaga et al., Macromolecules, Vol.42, No.4, pp.1344-1351, 2009).
- Tetra-PEG gel can be easily prepared on the spot by a simple two-component mixture of each polymer solution, and the gelation time can be controlled by adjusting the pH and ionic strength at the time of gel preparation. Is. And since this gel contains PEG as a main component, it is also excellent in biocompatibility.
- hydrophilic polymer having a polyvinyl skeleton examples include polyalkylmethacrylate such as polymethylmethacrylate, polyacrylate, polyvinyl alcohol, polyN-alkylacrylamide, and polyacrylamide.
- the hydrophilic polymer is in the range of 1x10 3 ⁇ 1x10 5, preferably, 5x10 3 ⁇ 5x10 4, more preferably in the range of a weight average molecular weight in the range of 1x10 4 ⁇ 4x10 4 (Mw) .
- the hydrophilic polymer is a first polymer unit having one or more nucleophilic functional groups on the side chain or terminal and a second polymer having one or more electrophilic functional groups on the side chain or terminal. It is a combination of units.
- the first polymer unit may have one or more nucleophilic functional groups on the side chain or terminal and the second polymer unit may have one or more electrophilic functional groups on the side chain or terminal. preferable.
- By cross-linking the nucleophilic functional group and the electrophilic functional group a gel having a three-dimensional network structure is formed.
- the total of the nucleophilic functional group and the electrophilic functional group is preferably 5 or more. It is more preferred that these functional groups are present at the ends.
- nucleophilic functional group present in the first and second polymer units examples include a thiol group (-SH), an amino group, or the like, and a nucleophilic functional group known to those skilled in the art can be appropriately used. Can be used.
- the nucleophilic functional group is a -SH group.
- the nucleophilic functional groups may be the same or different, but they are preferably the same. When the functional groups are the same, the reactivity with the electrophilic functional group that forms a cross-linking bond becomes uniform, and it becomes easy to obtain a gel having a uniform three-dimensional structure.
- Active ester groups can be used as the electrophilic functional groups present in the first and second polymer units.
- an active ester group include a maleimidyl group, an N-hydroxy-succinimidyl (NHS) group, a sulfosuccinimidyl group, a phthalimidyl group, an imidazoleyl group, an acryloyl group, a nitrophenyl group, an isothiocyanate group, an aldehyde group and iodine.
- the electrophilic functional group is a maleemidyl group.
- the electrophilic functional groups may be the same or different, but they are preferably the same. When the functional groups are the same, the reactivity with the nucleophilic functional group that forms a cross-linking bond becomes uniform, and it becomes easy to obtain a gel having a uniform three-dimensional structure.
- a preferred non-limiting example of a polymer unit having a nucleophilic functional group at the end is, for example, represented by the following formula (I) having a branch of four polyethylene glycol skeletons and having a thiol group at the end. Examples include compounds.
- R 11 ⁇ R 14 are the same or respectively, C 1 -C 7 alkylene group, C 2 -C 7 alkenylene group, -NH-R 15 -, - CO-R 15 -, - R 16 -O-R 17 -, - R 16 -NH-R 17 -, - R 16 -CO 2 -R 17 -, - R 16 -CO 2 -NH-R 17 -, - R 16 -CO-R 17 -Or-R 16- CO-NH-R 17 -where R 15 indicates a C 1- C 7 alkylene group, R 16 indicates a C 1- C 3 alkylene group, and R 17 indicates a C. 1- C 5 Shows an alkylene group. )
- n 11 to n 14 may be the same or different from each other. The closer the values of n 11 to n 14, the more uniform the three-dimensional structure can be obtained, and the higher the strength becomes. Therefore, in order to obtain a high-strength gel, it is preferable that they are the same. If the values of n 11 to n 14 are too high, the strength of the gel will be weakened, and if the values of n 11 to n 14 are too low, the gel will not be easily formed due to steric hindrance of the compound. Therefore, examples of n 11 to n 14 include integer values of 25 to 250, preferably 35 to 180, more preferably 50 to 115, and particularly preferably 50 to 60.
- R 11 to R 14 are linker sites connecting the functional group and the core portion.
- R 11 to R 14 may be the same or different from each other, but are preferably the same in order to produce a high-strength gel having a uniform three-dimensional structure.
- R 11 ⁇ R 14 is, C 1 -C 7 alkylene group, C 2 -C 7 alkenylene group, -NH-R 15 -, - CO-R 15 -, - R 16 -O-R 17 -, - R 16 -NH-R 17 -, - R 16 -CO 2 -R 17 -, - R 16 -CO 2 -NH-R 17 -, - R 16 -CO-R 17 -, or -R 16 -CO-NH- R 17 -is shown.
- R 15 represents a C 1 -C 7 alkylene group.
- R 16 represents a C 1 -C 3 alkylene group.
- R 17 represents a C 1 -C 5 alkylene group.
- C 1 -C 7 alkylene group carbon atoms, which may have a branch means 1 to 7 alkylene group, or one linear C 1 -C 7 alkylene group or 2
- One or more C 2 -C 7 alkylene group having branching (number of carbon atoms including branching 2 to 7) means.
- C 1- C 7 alkylene groups are -CH 2 -,-(CH 2 ) 2 -,-(CH 2 ) 3- , -CH (CH 3 )-,-(CH 2 ) 3 -,-( CH (CH 3 )) 2 -,-(CH 2 ) 2- CH (CH 3 )-,-(CH 2 ) 3- CH (CH 3 )-,-(CH 2 ) 2- CH (C 2 H 5) )-,-(CH 2 ) 6 -,-(CH 2 ) 2- C (C 2 H 5 ) 2 -,-(CH 2 ) 3 C (CH 3 ) 2 CH 2-, and the like.
- the "C 2 -C 7 alkenylene group” is a one or two or more Jo or branched having 2 to 7 carbon atoms alkenylene group having a double bond in the chain, for example, the Examples thereof include a divalent group having a double bond formed by removing 2 to 5 hydrogen atoms of adjacent carbon atoms from an alkylene group.
- polymer units having electrophilic functional groups at the ends include, for example, having four polyethylene glycol backbone branches and having an N-hydroxy-succinimidyl (NHS) group at the ends.
- polymer units having electrophilic functional groups at the ends include, for example, having four polyethylene glycol backbone branches and having an N-hydroxy-succinimidyl (NHS) group at the ends.
- NHS N-hydroxy-succinimidyl
- n 21 to n 24 may be the same or different from each other. The closer the values of n 21 to n 24 are, the more uniform the three-dimensional structure can be obtained and the higher the strength of the gel, which is preferable, and it is preferable that the gels are the same. If the values of n 21 to n 24 are too high, the strength of the gel will be weakened, and if the values of n 21 to n 24 are too low, the gel will not be easily formed due to steric hindrance of the compound. Therefore, n 21 to n 24 may have an integer value of 5 to 300, preferably 20 to 250, more preferably 30 to 180, still more preferably 45 to 115, and even more preferably 45 to 55.
- the molecular weight of the second four-branched compound of the present invention the range of 1x10 3 ⁇ 1x10 5, preferably, 5x10 3 ⁇ 5x10 4, more preferably in the range of weight average molecular weight in the range of 1x10 4 ⁇ 4x10 4 (Mw) Is preferable.
- R 21 to R 24 are linker sites that connect the functional group and the core portion.
- R 21 to R 24 may be the same or different from each other, but are preferably the same in order to produce a high-strength gel having a uniform three-dimensional structure.
- R 21 ⁇ R 24 are the same or respectively, C 1 -C 7 alkylene group, C 2 -C 7 alkenylene group, -NH-R 25 -, - CO-R 25 -, - R 26 -O-R 27 -, - R 26 -NH-R 27 -, - R 26 -CO 2 -R 27 -, - R 26 -CO 2 -NH-R 17 -, - R 26 -CO-R 27 -Or-R 26- CO-NH-R 27 -is indicated.
- R 25 represents a C 1 -C 7 alkylene group.
- R 26 represents a C 1 -C 3 alkylene group.
- R 27 represents a C 1 -C 5 alkylene group.
- the alkylene group and the alkenylene group may have one or more arbitrary substituents.
- substituents include an alkoxy group, a halogen atom (which may be a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom), an amino group, a mono or di-substituted amino group, a substituted silyl group, and an acyl group.
- Groups, aryl groups and the like can be mentioned, but are not limited thereto. If the alkyl group has more than one substituent, they may be the same or different. The same applies to the alkyl moiety of other substituents containing the alkyl moiety (eg, alkyloxy group, aralkyl group, etc.).
- a certain functional group may have a substituent
- the type of the substituent, the position of the substituent, and the number of the substituents are not particularly limited. If they have two or more substituents, they may be the same or different.
- the substituent include, but are not limited to, an alkyl group, an alkoxy group, a hydroxyl group, a carboxyl group, a halogen atom, a sulfo group, an amino group, an alkoxycarbonyl group, an oxo group and the like. Further substituents may be present in these substituents.
- small molecule compounds can be additionally used to crosslink the hydrophilic polymer. More specifically, it is possible to replace either the first polymer unit or the second polymer unit with a small molecule compound.
- the small molecule compound has one or more nucleophilic or electrophilic functional groups in the molecule.
- a low molecular weight compound having a nucleophilic functional group in the molecule is used instead of the first polymer, and a second polymer having one or more nucleophilic functional groups in the side chain or the terminal thereof. By reacting with, the second polymer can be crosslinked and gelled.
- Examples of such a "low molecular weight compound having an nucleophilic functional group in the molecule” include a compound having a thiol group in the molecule, and for example, dithiothreitol can be used.
- the gel material of the present invention contains a hydrogel (polymer gel) having a structure in which the hydrophilic polymer is crosslinked to form a three-dimensional network structure.
- the "gel” is generally a dispersion system of a polymer having a high viscosity and losing fluidity, and the relationship between the storage elastic modulus G'and the loss elastic modulus G'is G' ⁇ G". Refers to the state of having.
- “hydrogel” is a gel containing water.
- the hydrogel contained in the gel material of the present invention has a polymer content in the range of 1 to 5% by weight, preferably 2 to 4% by weight. Further, the hydrogel has an elastic modulus in the range of 100 to 10000 Pa, preferably in the range of 500 to 5000 Pa. By keeping these polymer contents and elastic modulus within an appropriate range, it is possible to suppress unwanted effects such as excessive expansion of the gel when the periphery of the tendon or ligament is covered with hydrogel. It can be of sufficient strength to stay in the affected area for a period of time.
- the hydrogel contained in the gel material of the present invention preferably has an osmotic pressure of 500 to 10000 Pa.
- the osmotic pressure ( ⁇ os ) can be calculated by reverse osmosis of a sample prepared in a dialysis machine with Polyvinylpyrrolidolone (PVP) solutions having different concentrations and using the Flory-Rehner equilibrium equation shown below.
- ⁇ sw and ⁇ el represent the swelling pressure and the elastic pressure of the target sample, respectively
- ⁇ PVP represents the osmotic pressure of the PVP solution.
- the present invention also relates to a method for treating a tendon or ligament injury or rupture using the above gel material from another viewpoint. More specifically, the gel material is applied around the affected part of the tendon or ligament that needs to be treated due to injury or rupture to promote the healing thereof. Coverage of such affected areas is typically performed after suturing surgery on the tendon or ligament.
- the present invention reveals that tendon or ligament healing proceeds efficiently even in a state where scar tissue, which has been considered inevitable in the tendon ligament healing process, is suppressed or eliminated. I made it.
- the tendon or ligament to be treated is a mammalian tendon or ligament selected from the group consisting of humans, horses, pigs, dogs, cats, guinea pigs, rabbits, rats and mice. Typically, it is a tendon or ligament in the human body.
- injury or rupture of a tendon or ligament refers to traumatic injury or rupture (eg, due to sports injury, abuse, or medical or surgical intervention), injury due to genetic origin or disease, and. May include disease. "Rupture” also includes partial rupture.
- the "tendon” includes an Achilles tendon, a shoulder tendon plate, a hand and a wrist, a patellar tendon, a flexor tendon, and an extensor tendon.
- Tendon “injury” can include other injuries such as tendinosis, tendinitis, synovitis, tenosynovitis, and avulsion, as well as tendon-related disorders.
- the "ligament” includes ligaments in the knee joint, shoulder, elbow joint, ankle joint, and spine.
- "injury” of the knee ligament includes lateral collateral ligament injury, medial collateral ligament injury, anterior cruciate ligament injury, posterior cruciate ligament injury.
- the method of the present invention can also be said to be a method of suppressing the expression of type III collagen in the tendon or ligament, which comprises covering the circumference of the tendon or ligament after suture surgery with the gel material.
- the expression of type III collagen can be suppressed and the expression of type I collagen can be maintained by covering the circumference of the tendon or ligament after the suture operation with the gel material.
- the method of treating a tendon or ligament injury or rupture of the present invention comprises the following steps: a) Polymer solution A containing a first hydrophilic polymer having one or more nucleophilic functional groups on the side chain or terminal and a second hydrophilic having one or more electrophilic functional groups on the side chain or terminal. Step of preparing polymer solution B containing polymer; b) By applying the polymer solutions A and B around the tendon or ligament after the suture operation, a polymer gel having a structure in which a hydrophilic polymer is crosslinked to form a three-dimensional network structure is formed. , The step of covering the circumference of the tendon or ligament; and c) the step of suppressing the expression of type III collagen in the tendon or ligament by the above coating.
- the solvent in the polymer solutions A and B is water, but in some cases, it may be a mixed solvent containing alcohols such as ethanol and other organic solvents.
- the polymer solutions A and B are aqueous solutions using water as a single solvent.
- the volumes of the polymer solutions A and B can be appropriately adjusted depending on the area of the affected area to which they are applied, the complexity of the structure, and the like, but are typically in the range of 0.1 to 20 ml, preferably 0.1 to 20 ml, respectively. 1 to 10 ml.
- the pH of the polymer solutions A and B is typically in the range of 4 to 8, preferably in the range of 5 to 7.
- a pH buffer known in the art can be used to adjust the pH of the polymer solutions A and B.
- the pH can be adjusted to the above range by using a citric acid-phosphate buffer (CPB) and changing the mixing ratio of citric acid and disodium hydrogen phosphate.
- CPB citric acid-phosphate buffer
- the polymer solutions A and B may be independently applied to the periphery of the tendon or ligament, or a solution in which the polymer solutions A and B are mixed immediately before is prepared and then mixed.
- the solution may be applied around the tendon or ligament. This makes it possible to form a polymer gel (hydrogel) in situ.
- the gelation time at that time is preferably in the range of 10 to 300 seconds, and more preferably in the range of 30 to 100 seconds. Again, the gelation time can be adjusted primarily by appropriately setting the polymer concentration, pH and ionic strength in the polymer solution.
- the polymer gel formed around the tendon or ligament by step b) is preferably present around the affected area for a period required for the tendon or ligament to be repaired and regenerated.
- the polymer gel preferably has a decomposition rate of 10 to 90 days in vivo, more preferably 20 to 50 days.
- a two-component mixing syringe as disclosed in International Publication No. WO2007 / 083522 can be used.
- the temperature of the two liquids at the time of mixing is not particularly limited, and may be any temperature as long as the precursor units are dissolved and each liquid has fluidity.
- the temperatures of the two liquids may be different, but it is preferable that the two liquids have the same temperature because the two liquids are easily mixed.
- Step c) is a step of suppressing the expression of type III collagen in the tendon or ligament by covering the circumference of the tendon or ligament with a polymer gel. It mainly suppresses the invasion of inflammatory cells and fibroblasts from around the tendon or ligament by covering the circumference of the tendon or ligament with the invasion of scar tissue containing a large amount of type III collagen. Or it is based on being excluded.
- the expression of type I collagen by intratendon cells is maintained while suppressing the expression of exogenous type III collagen based on the invasion of the scar tissue. , It is believed that this can result in endogenous healing.
- the present invention also relates to a kit for producing the above gel material (polymer gel), which contains two or more solutions containing a hydrophilic polymer.
- a kit for producing the above gel material polymer gel
- Such kits are suitable for use in the treatment methods described above.
- the types of hydrophilic polymers contained in the solution are as described above, and those capable of forming a hydrogel by cross-linking can be used.
- the solution has a polymer solution A containing a first hydrophilic polymer having one or more nucleophilic functional groups on the side chain or terminal and one or more electrophilic functional groups on the side chain or terminal. It can be a polymer solution B containing a second hydrophilic polymer.
- the first and second hydrophilic polymers are polymers with a polyether skeleton or a polyvinyl skeleton, preferably bi-branched, 3-branched or 4-branched polyethylene glycol.
- Such a kit is suitable for use in the above-mentioned treatment methods.
- it may further include a medical device for wrapping around a tendon or ligament covered with a gel material.
- a medical device is suitable for stably fixing a tendon or a ligament after a suture operation, and is, for example, an instrument capable of forming a hollow cylindrical shape.
- an instrument having an appropriate shape can be used depending on the position of the affected area, the postoperative situation, and the like.
- rat flexor tendon rupture model A rat flexor tendon rupture model was created, 25 ⁇ l of polymer solution A and 25 ⁇ l of polymer solution B were injected around the tendon after tendon suture, and gelation occurred 90 seconds later. It was confirmed. It was confirmed that by covering the affected part of the sutured tendon with gel, the invasion of inflammatory cells and fibroblasts from the surroundings was blocked without any problem. On the other hand, when not covered with gel, the tendon was heavily covered with scar tissue. Images of the gel-coated repair tendon (gel group) and the gel-free repair tendon (control group) of the present invention are shown in FIG.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Epidemiology (AREA)
- Dermatology (AREA)
- Dispersion Chemistry (AREA)
- Materials For Medical Uses (AREA)
- Biomedical Technology (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Rheumatology (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
Description
<1>腱又は靭帯の損傷又は断裂の治療においてIII型コラーゲンの発現を抑制するための、高分子ゲルを含むゲル材料であって、前記高分子ゲルが、親水性ポリマーが架橋されることにより3次元網目構造を形成した構造を有するハイドロゲルであって、2~5重量%の範囲の高分子含有量、及び100~10000Paの範囲の弾性率を有することを特徴とする、該ゲル材料;
<2>前記親水性ポリマーが、ポリエーテル骨格又はポリビニル骨格を有する、上記<1>に記載のゲル材料;
<3>前記親水性ポリマーが、2分岐、3分岐又は4分岐のポリエチレングリコールである、上記<1>又は<2>に記載のゲル材料;
<4>前記親水性ポリマーが、側鎖又は末端に1以上の求核性官能基を有する第1のポリマーユニットと、側鎖又は末端に1以上の求電子性の官能基を有する第2のポリマーユニットからなる、上記<1>~<3>のいずれか1に記載のゲル材料;
<5>前記求核性官能基が、チオール基及びアミノ基よりなる群から選択され、前記求電子性官能基が、マレイミジル基、N-ヒドロキシ-スクシンイミジル(NHS)基、スルホスクシンイミジル基、フタルイミジル基、イミダゾイル基、アクリロイル基、ニトロフェニル基、及び-CO2PhNO2よりなる群から選択される、上記<4>に記載のゲル材料;
<6>腱又は靭帯の縫合手術後に腱又は靭帯を被覆するために用いられる、上記<1>~<5>のいずれか1に記載のゲル材料;
<7>上記腱又は靭帯を被覆することにより、III型コラーゲンの発現を抑制し、かつI型コラーゲンの発現を維持することができる、上記<6>に記載のゲル材料;及び
<8>上記<1>~<7>のいずれか1に記載のゲル材料を作製するためのキットであって、親水性ポリマーを含有する2以上の溶液が格納されている、キット
を提供するものである。
<9>上記<1>~<7>のいずれか1に記載のゲル材料により、縫合手術後の腱又は靭帯の周囲を被覆することを含む、腱又は靭帯の損傷又は断裂の治療方法;
<10>上記<1>~<7>のいずれか1に記載のゲル材料により、縫合手術後の腱又は靭帯の周囲を被覆することを含む、腱又は靭帯においてIII型コラーゲンの発現を抑制する方法;
<11>腱又は靭帯の損傷又は断裂の治療方法であって、側鎖又は末端に1以上の求核性官能基を有する第1の親水性ポリマーを含むポリマー溶液Aと、側鎖又は末端に1以上の求電子性官能基を有する第2の親水性ポリマーを含むポリマー溶液Bとを用意する工程、ポリマー溶液A及びBを、縫合手術後の腱又は靭帯の周辺に付与することにより、親水性ポリマーが架橋されることにより3次元網目構造を形成した構造を有する高分子ゲルを形成して、上記腱又は靭帯の周囲を被覆する工程、及び上記被覆により、腱又は靭帯におけるIII型コラーゲンの発現を抑制する工程、を含む、該治療方法;
<12>前記高分子ゲルが、1~5重量%の範囲の高分子含有量、及び100~10000Paの範囲の弾性率を有する、上記<11>に記載の治療方法;
<13>前記第1及び第2の親水性ポリマーが、ポリエーテル骨格又はポリビニル骨格を有する、上記<11>又は<12>に記載の治療方法;
<14>前記第1及び第2の親水性ポリマーが、2分岐、3分岐又は4分岐のポリエチレングリコールである、上記<11>~<13>のいずれか1に記載の治療方法;及び
<15>前記求核性官能基が、チオール基及びアミノ基よりなる群から選択され、前記求電子性官能基が、マレイミジル基、N-ヒドロキシ-スクシンイミジル(NHS)基、スルホスクシンイミジル基、フタルイミジル基、イミダゾイル基、アクリロイル基、ニトロフェニル基、イソチオシアネート基、アルデヒド基、ヨードアセトアミド基、ビニルスルホン基、及び-CO2PhNO2よりなる群から選択される、上記<11>~<14>のいずれか1に記載の治療方法
を提供するものである。
<16>腱又は靭帯の損傷又は断裂の治療に有効な薬剤のスクリーニング方法であって、上記<1>~<7>のいずれか1に記載のゲル材料によって被覆された腱又は靭帯において、I型コラーゲンの増殖活性を有する化合物を探索及び同定する工程を含む、該スクリーニング方
を提供するものである。
本発明のゲル材料は、腱又は靭帯の損傷又は断裂の治療においてIII型コラーゲンの発現を抑制するための高分子ゲルを含むゲル材料である。そして、当該高分子ゲルが、親水性ポリマーが架橋することにより3次元網目構造を形成した構造を有するハイドロゲルであって、1~5重量%の範囲の高分子含有量、及び100~10000Paの範囲の弾性率を有することを特徴とするものである。ここで、「弾性率」とは、貯蔵弾性率G’を意味する。
上記高分子ゲルを構成する親水性ポリマーは、架橋されることによってハイドロゲルを形成し得るものであって、より詳細には、最終的なゲルにおいて、当該ポリマーが互いに或いは任意の低分子化合物を介して架橋することにより網目構造、特に、3次元網目構造を形成し得るポリマーである。かかる親水性ポリマーは、水溶液中でのゲル化反応(架橋反応等)によってハイドロゲルを形成し得るものであれば、当該技術分野において公知のものを用いることができるが、好ましくは、ポリエーテル骨格又はポリビニル骨格を有する親水性ポリマーである。
上述のように、本発明のゲル材料は、上記親水性ポリマーが架橋されることにより3次元網目構造を形成した構造を有するハイドロゲル(高分子ゲル)を含むものである。本明細書中において、「ゲル」とは、一般に、高粘度で流動性を失った高分子の分散系であり、貯蔵弾性率G’と損失弾性率G”においてG’≧G”の関係性を有する状態をいう。また、「ハイドロゲル」は、水を含有するゲルである。
本発明は、別の観点において、上記ゲル材料を用いて腱又は靭帯の損傷又は断裂を治療する方法にも関する。より詳細には、損傷又は断裂により治療が必要となった腱又は靭帯の患部の周囲を上記ゲル材料で被覆することにより、その治癒を促進するものである。そのような患部の被覆は、典型的には、腱又は靭帯の縫合手術後に行われる。
a)側鎖又は末端に1以上の求核性官能基を有する第1の親水性ポリマーを含むポリマー溶液Aと、側鎖又は末端に1以上の求電子性官能基を有する第2の親水性ポリマーを含むポリマー溶液Bとを用意する工程;
b)ポリマー溶液A及びBを、縫合手術後の腱又は靭帯の周辺に付与することにより、親水性ポリマーが架橋されることにより3次元網目構造を形成した構造を有する高分子ゲルを形成して、上記腱又は靭帯の周囲を被覆する工程;及び
c)上記被覆により、腱又は靭帯におけるIII型コラーゲンの発現を抑制する工程。
原料ポリマーとして、末端に-SH基を有するTetra-PEG-SH(テトラチオール-ポリエチレングリコール)及び末端にマレイミジル基を有するTetra-PEG-MA(テトラマレイミジル-ポリエチレングリコール)を用いた。これら原料ポリマーは、それぞれ日油株式会社から市販されているものを用いた。分子量 (モル質量) は、どちらも20000である。ポリマー溶液の緩衝剤として、クエン酸ナトリウム緩衝液 (pH5.10;富士フィルム和光純薬製) を用いた。
[ポリマー溶液A]
濃度:2.5wt% Tetra-PEG-SH
pH:5.10
[ポリマー溶液B]
濃度:2.5wt% Tetra-PEG-MA
pH:5,10
ラットの屈筋腱断裂モデルを作成し、腱縫合術後に腱周囲に25μlのポリマー溶液A及び25μlのポリマー溶液Bを注入し、90秒分後にゲル化したことを確認した。縫合した腱患部をゲルで被覆することで、周囲からの炎症性細胞や線維芽細胞の進入を問題なくブロックすることを確認した。一方、ゲルで被覆しない場合には、腱が瘢痕組織により強く覆われていた。本発明のゲルで被覆した修復腱(ゲル群)とゲルで被覆しない修復腱(コントロール群)の画像を図1に示す。
Claims (16)
- 腱又は靭帯の損傷又は断裂の治療においてIII型コラーゲンの発現を抑制するための、高分子ゲルを含むゲル材料であって、
前記高分子ゲルが、親水性ポリマーが架橋されることにより3次元網目構造を形成した構造を有するハイドロゲルであって、1~5重量%の範囲の高分子含有量、及び100~10000Paの範囲の弾性率を有すること
を特徴とする、該ゲル材料。 - 前記親水性ポリマーが、ポリエーテル骨格又はポリビニル骨格を有する、請求項1に記載のゲル材料。
- 前記親水性ポリマーが、2分岐、3分岐又は4分岐のポリエチレングリコールである、請求項1又は2に記載のゲル材料。
- 前記親水性ポリマーが、側鎖又は末端に1以上の求核性官能基を有する第1のポリマーユニットと、側鎖又は末端に1以上の求電子性の官能基を有する第2のポリマーユニットからなる、請求項1~3のいずれか1に記載のゲル材料。
- 前記求核性官能基が、チオール基及びアミノ基よりなる群から選択され、前記求電子性官能基が、マレイミジル基、N-ヒドロキシ-スクシンイミジル(NHS)基、スルホスクシンイミジル基、フタルイミジル基、イミダゾイル基、アクリロイル基、ニトロフェニル基、イソチオシアネート基、アルデヒド基、ヨードアセトアミド基、ビニルスルホン基、及び-CO2PhNO2よりなる群から選択される、請求項4に記載のゲル材料。
- 腱又は靭帯の縫合手術後に腱又は靭帯を被覆するために用いられる、請求項1~5のいずれか1に記載のゲル材料。
- 上記腱又は靭帯を被覆することにより、III型コラーゲンの発現を抑制し、かつI型コラーゲンの発現を維持することができる、請求項6に記載のゲル材料。
- 請求項1~7のいずれか1に記載のゲル材料を作製するためのキットであって、親水性ポリマーを含有する2以上の溶液が格納されている、キット。
- 請求項1~7のいずれか1に記載のゲル材料により、縫合手術後の腱又は靭帯の周囲を被覆することを含む、腱又は靭帯の損傷又は断裂の治療方法。
- 請求項1~7のいずれか1に記載のゲル材料により、縫合手術後の腱又は靭帯の周囲を被覆することを含む、腱又は靭帯においてIII型コラーゲンの発現を抑制する方法。
- 腱又は靭帯の損傷又は断裂の治療方法であって、
側鎖又は末端に1以上の求核性官能基を有する第1の親水性ポリマーを含むポリマー溶液Aと、側鎖又は末端に1以上の求電子性官能基を有する第2の親水性ポリマーを含むポリマー溶液Bとを用意する工程、
ポリマー溶液A及びBを、縫合手術後の腱又は靭帯の周辺に付与することにより、親水性ポリマーが架橋されることにより3次元網目構造を形成した構造を有する高分子ゲルを形成して、上記腱又は靭帯の周囲を被覆する工程、及び
上記被覆により、腱又は靭帯におけるIII型コラーゲンの発現を抑制する工程、
を含む、該治療方法。 - 前記高分子ゲルが、1~5重量%の範囲の高分子含有量、及び100~10000Paの範囲の弾性率を有する、請求項11に記載の治療方法。
- 前記第1及び第2の親水性ポリマーが、ポリエーテル骨格又はポリビニル骨格を有する、請求項11又は12に記載の治療方法。
- 前記第1及び第2の親水性ポリマーが、2分岐、3分岐又は4分岐のポリエチレングリコールである、請求項11~13のいずれか1に記載の治療方法。
- 前記求核性官能基が、チオール基及びアミノ基よりなる群から選択され、前記求電子性官能基が、マレイミジル基、N-ヒドロキシ-スクシンイミジル(NHS)基、スルホスクシンイミジル基、フタルイミジル基、イミダゾイル基、アクリロイル基、ニトロフェニル基、イソチオシアネート基、アルデヒド基、ヨードアセトアミド基、ビニルスルホン基、及び-CO2PhNO2よりなる群から選択される、請求項11~14のいずれか1に記載の治療方法。
- 腱又は靭帯の損傷又は断裂の治療に有効な薬剤のスクリーニング方法であって、請求項1~7のいずれか1に記載のゲル材料によって被覆された腱又は靭帯において、I型コラーゲンの増殖活性を有する化合物を探索及び同定する工程を含む、該スクリーニング方法。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21846289.3A EP4186535A4 (en) | 2020-07-22 | 2021-07-13 | GEL MATERIAL FOR TENDON OR LIGAMENT TREATMENT |
| CN202180060328.0A CN116157083A (zh) | 2020-07-22 | 2021-07-13 | 肌腱或韧带的治疗用凝胶材料 |
| CA3189744A CA3189744A1 (en) | 2020-07-22 | 2021-07-13 | Gel material for treating tendon or ligament |
| US18/005,919 US20230330304A1 (en) | 2020-07-22 | 2021-07-13 | Gel material for treating tendon or ligament |
| AU2021311181A AU2021311181A1 (en) | 2020-07-22 | 2021-07-13 | Gel material for treating tendon or ligament |
| KR1020227045295A KR20230037504A (ko) | 2020-07-22 | 2021-07-13 | 건 또는 인대의 치료용 겔 재료 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-125055 | 2020-07-22 | ||
| JP2020125055A JP7619544B2 (ja) | 2020-07-22 | 2020-07-22 | 腱又は靭帯の治療用ゲル材料 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022019182A1 true WO2022019182A1 (ja) | 2022-01-27 |
Family
ID=79728661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2021/026352 Ceased WO2022019182A1 (ja) | 2020-07-22 | 2021-07-13 | 腱又は靭帯の治療用ゲル材料 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20230330304A1 (ja) |
| EP (1) | EP4186535A4 (ja) |
| JP (1) | JP7619544B2 (ja) |
| KR (1) | KR20230037504A (ja) |
| CN (1) | CN116157083A (ja) |
| AU (1) | AU2021311181A1 (ja) |
| CA (1) | CA3189744A1 (ja) |
| WO (1) | WO2022019182A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023145765A1 (ja) * | 2022-01-31 | 2023-08-03 | 国立大学法人 東京大学 | 多孔質構造を有するハイドロゲルの製造方法 |
| WO2024048458A1 (ja) * | 2022-09-01 | 2024-03-07 | 国立大学法人 東京大学 | 繊維状高分子材料及び繊維状ゲル材料 |
| WO2025094888A1 (ja) * | 2023-11-02 | 2025-05-08 | 国立大学法人 東京大学 | 多孔質構造を有するハイドロゲルの製造方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007083522A1 (ja) | 2006-01-18 | 2007-07-26 | Next21 K. K. | 医療用ゲル形成組成物,その組成物の投与デバイス及び薬剤放出制御担体 |
| WO2010070775A1 (ja) * | 2008-12-19 | 2010-06-24 | 株式会社ネクスト21 | 超高強度インジェクタブルハイドロゲル及びその製造方法 |
| WO2017119296A1 (ja) * | 2016-01-06 | 2017-07-13 | 国立大学法人 東京大学 | 眼科治療用ゲル材料 |
| WO2020027016A1 (ja) * | 2018-07-31 | 2020-02-06 | 国立大学法人 東京大学 | スポンジ様の多孔体構造を有する高分子ゲル |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU778853B2 (en) * | 1999-04-02 | 2004-12-23 | Fziomed, Inc. | Compositions of polyacids and polyethers and methods for their use in reducing adhesions |
| US20090117070A1 (en) * | 2004-06-23 | 2009-05-07 | Angiotech Pharmaceuticals (Us), Inc. | Methods and Crosslinked Polymer Compositions for Cartilage Repair |
| WO2012177257A1 (en) * | 2011-06-23 | 2012-12-27 | National Cheng Kung University | Adhesive cell tissue gels |
| HUE044160T2 (hu) * | 2012-03-22 | 2019-10-28 | Trb Chemedica Int S A | Eljárás szalag vagy ín helyreállítására |
| CN104307052B (zh) * | 2014-10-27 | 2017-02-22 | 爱美客技术发展股份有限公司 | 医用可注射防粘连凝胶及其制备方法 |
| US10550225B2 (en) * | 2015-03-10 | 2020-02-04 | The University Of Tokyo | Process for producing low-concentration gel using gel-precursor clusters, and gel obtained by said production process |
| KR20190070343A (ko) * | 2016-10-13 | 2019-06-20 | 알레간 인코포레이티드 | 피부 필러 응용을 위한 코아세르베이트 하이알루로난 하이드로겔 |
-
2020
- 2020-07-22 JP JP2020125055A patent/JP7619544B2/ja active Active
-
2021
- 2021-07-13 CA CA3189744A patent/CA3189744A1/en active Pending
- 2021-07-13 KR KR1020227045295A patent/KR20230037504A/ko active Pending
- 2021-07-13 EP EP21846289.3A patent/EP4186535A4/en active Pending
- 2021-07-13 WO PCT/JP2021/026352 patent/WO2022019182A1/ja not_active Ceased
- 2021-07-13 AU AU2021311181A patent/AU2021311181A1/en active Pending
- 2021-07-13 US US18/005,919 patent/US20230330304A1/en active Pending
- 2021-07-13 CN CN202180060328.0A patent/CN116157083A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007083522A1 (ja) | 2006-01-18 | 2007-07-26 | Next21 K. K. | 医療用ゲル形成組成物,その組成物の投与デバイス及び薬剤放出制御担体 |
| WO2010070775A1 (ja) * | 2008-12-19 | 2010-06-24 | 株式会社ネクスト21 | 超高強度インジェクタブルハイドロゲル及びその製造方法 |
| WO2017119296A1 (ja) * | 2016-01-06 | 2017-07-13 | 国立大学法人 東京大学 | 眼科治療用ゲル材料 |
| WO2020027016A1 (ja) * | 2018-07-31 | 2020-02-06 | 国立大学法人 東京大学 | スポンジ様の多孔体構造を有する高分子ゲル |
Non-Patent Citations (7)
| Title |
|---|
| BEST, THE FASEB JOURNA, vol. 33, July 2019 (2019-07-01) |
| ISHIYAMA NORIYUKI, MORO TORU, OHE TAKASHI, MIURA TOSHIKI, ISHIHARA KAZUHIKO, KONNO TOMOHIRO, OHYAMA TADASHI, KIMURA MIZUNA, KYOMOT: "Reduction of Peritendinous Adhesions by Hydrogel Containing Biocompatible Phospholipid Polymer MPC for Tendon Repair : ", JOURNAL OF BONE AND JOINT SURGERY. AMERICAN VOLUME, JOURNAL OF BONE AND JOINT SURGERY, US, vol. 93, no. 2, 1 January 2011 (2011-01-01), US , pages 142 - 149, XP055901245, ISSN: 0021-9355, DOI: 10.2106/JBJS.I.01634 * |
| ISHIYAMA, N. ; MORO, T. ; ISHIHARA, K. ; OHE, T. ; MIURA, T. ; KONNO, T. ; OHYAMA, T. ; KIMURA, M. ; KYOMOTO, M. ; NAKAMURA, K. ; : "The prevention of peritendinous adhesions by a phospholipid polymer hydrogel formed in situ by spontaneous intermolecular interactions", BIOMATERIALS, ELSEVIER, AMSTERDAM, NL, vol. 31, no. 14, 1 May 2010 (2010-05-01), AMSTERDAM, NL , pages 4009 - 4016, XP026947575, ISSN: 0142-9612, DOI: 10.1016/j.biomaterials.2010.01.100 * |
| KOBAYASHI MASANORI, TOGUCHIDA JUNYA, OKA MASANORI: "Development of the Shields for Tendon Injury Repair Using Polyvinyl Alcohol - Hydrogel (PVA-H)", JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, WILEY, NEW YORK, NY, US, vol. 58, no. 4, 30 November 2000 (2000-11-30), US , pages 344 - 351, XP009547965, ISSN: 0021-9304, DOI: 10.1002/jbm.1027 * |
| MATSUNAGA ET AL., MACROMOLECULES, vol. 42, no. 4, 2009, pages 1344 - 1351 |
| See also references of EP4186535A4 |
| VERONESI FRANCESCA, GIAVARESI GIANLUCA, BELLINI DAVIDE, CASAGRANDA VERONICA, PRESSATO DANIELE, FINI MILENA: "Evaluation of a new collagen‐based medical device (ElastiCo®) for the treatment of acute Achilles tendon injury and prevention of peritendinous adhesions: An in vitro biocompatibility and in vivo investigation", JOURNAL OF TISSUE ENGINEERING AND REGENERATIVE MEDICINE, JOHN WILEY & SONS, US, vol. 14, no. 8, 1 August 2020 (2020-08-01), US , pages 1113 - 1125, XP055901237, ISSN: 1932-6254, DOI: 10.1002/term.3085 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023145765A1 (ja) * | 2022-01-31 | 2023-08-03 | 国立大学法人 東京大学 | 多孔質構造を有するハイドロゲルの製造方法 |
| WO2024048458A1 (ja) * | 2022-09-01 | 2024-03-07 | 国立大学法人 東京大学 | 繊維状高分子材料及び繊維状ゲル材料 |
| WO2025094888A1 (ja) * | 2023-11-02 | 2025-05-08 | 国立大学法人 東京大学 | 多孔質構造を有するハイドロゲルの製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7619544B2 (ja) | 2025-01-22 |
| EP4186535A4 (en) | 2024-07-31 |
| AU2021311181A1 (en) | 2023-02-23 |
| US20230330304A1 (en) | 2023-10-19 |
| EP4186535A1 (en) | 2023-05-31 |
| KR20230037504A (ko) | 2023-03-16 |
| CN116157083A (zh) | 2023-05-23 |
| JP2022021475A (ja) | 2022-02-03 |
| CA3189744A1 (en) | 2022-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Pan et al. | Silk fibroin hydrogel adhesive enables sealed-tight reconstruction of meniscus tears | |
| Annabi et al. | Engineering a highly elastic human protein–based sealant for surgical applications | |
| WO2022019182A1 (ja) | 腱又は靭帯の治療用ゲル材料 | |
| Feng et al. | Sulfated hyaluronic acid hydrogels with retarded degradation and enhanced growth factor retention promote hMSC chondrogenesis and articular cartilage integrity with reduced hypertrophy | |
| EP1587945B1 (en) | Hydroxyphenyl cross-linked macromolecular network and applications thereof | |
| Rashid et al. | Gelatin-based hydrogels | |
| JP4511470B2 (ja) | ヒアルロン酸化合物、そのハイドロゲルおよび関節軟骨損傷治療用材料 | |
| ES2708076T3 (es) | Peptidoglicanos sintéticos que se unen al ácido hialurónico, preparación y métodos de uso | |
| CA3115998A1 (en) | Bioadhesive for soft tissue repair | |
| Gong et al. | 3D‐engineered GelMA conduit filled with ECM promotes regeneration of peripheral nerve | |
| JP2007508060A (ja) | 組織−生体材料の一体化 | |
| EP3167000B1 (en) | Thiolated peg-pva hydrogels | |
| JP2011522817A (ja) | ペルオキシダーゼおよび低濃度の過酸化水素の存在下でのヒドロゲルの形成方法 | |
| JP2008521502A (ja) | 半月板損傷の生体内治療及び修復方法 | |
| CN115515658B (zh) | 止血用聚合物材料试剂盒 | |
| Yalçın et al. | Novel biopolymer-based hydrogels obtained through crosslinking of keratose proteins using tetrakis (hydroxymethyl) phosphonium chloride | |
| Yang et al. | Adhesive ginsenoside compound K patches for cartilage tissue regeneration | |
| EP4400125A1 (en) | Sol-gel transition of 6-arm peg hydrogel over time | |
| JP7496888B2 (ja) | クラゲコラーゲンの使用 | |
| TWI902319B (zh) | 防腸沾黏組合物及其製備方法 | |
| Price et al. | Encapsulation in tendon and ligament regeneration | |
| WO2024195261A1 (ja) | 癒着防止材用のシルクフィブロインゲルおよびその製造方法、癒着防止材、ならびに癒着防止方法 | |
| Tsuda et al. | Photocrosslinkable chitosan hydrogel can prevent bone formation in both rat skull and fibula bone defects | |
| Kazybayeva et al. | Thiol‐Ene Click Hydrogels From Pentaerythritol Tetrakis (3‐Mercaptopropionate) and Polyethylene Glycol Diacrylate: Mucoadhesive and Antimicrobial Platforms for Drug Delivery | |
| WO2025081180A1 (en) | Injectable hydrogels to prevent calcification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21846289 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 3189744 Country of ref document: CA |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202317005867 Country of ref document: IN |
|
| ENP | Entry into the national phase |
Ref document number: 2021311181 Country of ref document: AU Date of ref document: 20210713 Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2021846289 Country of ref document: EP Effective date: 20230222 |