WO2004082694A1 - 細胞治療用材料、及び血管内治療方法 - Google Patents
細胞治療用材料、及び血管内治療方法 Download PDFInfo
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- WO2004082694A1 WO2004082694A1 PCT/JP2004/003730 JP2004003730W WO2004082694A1 WO 2004082694 A1 WO2004082694 A1 WO 2004082694A1 JP 2004003730 W JP2004003730 W JP 2004003730W WO 2004082694 A1 WO2004082694 A1 WO 2004082694A1
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- 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
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/0005—Ingredients of undetermined constitution or reaction products thereof
-
- 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
- A61K35/33—Fibroblasts
-
- 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
- A61K35/34—Muscles; Smooth muscle cells; Heart; Cardiac stem cells; Myoblasts; Myocytes; Cardiomyocytes
-
- 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
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/001—Use of materials characterised by their function or physical properties
- A61L24/0031—Hydrogels or hydrocolloids
-
- 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
- A61P7/04—Antihaemorrhagics; Procoagulants; Haemostatic agents; Antifibrinolytic agents
-
- 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
- A61L2430/36—Materials or treatment for tissue regeneration for embolization or occlusion, e.g. vaso-occlusive compositions or devices
Definitions
- the present invention relates to an endovascular treatment method, and more specifically, to an endovascular treatment method for aorta, vena cava and internal organs, pelvic cavity, limbs, cerebral artery and vein, and the like.
- the present invention has been made in view of the above circumstances, and an object thereof is to provide a very effective endovascular treatment method for an intravascular lesion such as an aneurysm, and to provide such a treatment.
- An object of the present invention is to provide a cell therapy material that can be used in the method.
- the present inventors have changed the concept of treatment for vascular treatment and confirmed that by promoting the formation of blood clots in blood vessels, stabilizing and organizing unstable thrombus can cure aneurysms, etc. Basically, the present invention has been completed.
- the endovascular treatment method according to the first invention which promotes thrombosis and organization of Z or thrombus, and is capable of forming cells that are not rejected by a subject in a liquid state in vitro It is characterized by being injected together with a medium that becomes semi-solid (gel-like) in a living body into a place where it is desired to promote thrombus formation and / or organization of thrombus.
- the cell therapy material according to the second invention is characterized in that cells that promote thrombosis and / or organization of thrombus and are not rejected by the subject are liquid in vitro and semi-solid in vivo ( It is contained in a medium that becomes a gel.
- thrombosis refers to the formation of a thrombus at a predetermined location in a blood vessel.
- Such thrombosis is called “insufficient thrombosis”.
- thrombi tend to “organize” as they are generally replaced by granulation tissue. It is in. With this organization, new blood vessels are formed in the granulation tissue, and various cells and physiologically active substances spread into the thrombus, collagen fibers increase, and scar contraction occurs. In other words, when the thrombus is replaced by fibrous tissue, it can be said that it is completely organized and can withstand pressure stress.
- cells that are not rejected by the recipient means cells that can avoid such rejection after transplantation, and include, for example, autologous cells of the recipient.
- cells are found that are not immunologically rejected by the recipient (eg, (a) cells that have been immunologically modified by biotechnology, (b) other Cells) include such cells.
- autologous cells there is no concern about side effects such as rejection since autologous cell transplantation is used.
- connective tissue-derived cells, muscle tissue-derived cells, blood vessel-derived cells, bone marrow cells, and the like can be used.
- cells injected into the body of the recipient be not affected by blood flow or the like and stay at a predetermined site where thrombus formation or the like is desired. (Gel-like).
- the cells pass through a narrow space (eg, inside a needle, inside a catheter, etc.). It is desired that it be an easily liquid.
- a narrow space eg, inside a needle, inside a catheter, etc.
- cells are contained in such a medium, it is possible to inject transdermally without incising the recipient, so that handling is easy.
- “It is liquid outside the body and semi-solid (gel-like) inside the body” is a requirement for a medium to satisfy the above characteristics.
- Examples of such media include: For example, a medium containing type I collagen (Tye I col 1 agen), a water-soluble elastin (E 1 astin) (for example, insoluble elastin is made water-soluble by oxalic acid hydrolysis treatment, and high molecular weight proteins (molecular weight 15 000) or more) to obtain a water-soluble elastin by purification).
- a medium containing water-soluble elastin elastin has a binding property to extracellular matrix such as proteodalican, so that cell growth factors such as bFGF and VEGF can be easily retained inside the gel.
- the above-mentioned medium is used and further contains a cell growth factor or the like, it is possible to release the medium from the medium in a sustained manner, so that the induction of differentiation and proliferation of transplanted cells can be promoted.
- a cell growth factor or the like it is possible to release the medium from the medium in a sustained manner, so that the induction of differentiation and proliferation of transplanted cells can be promoted.
- two or more types of cells are used and the interaction of differentiation induction between cells is used, differentiation induction and proliferation of transplanted cells can be similarly promoted without using cell growth factors and the like.
- type I collagen or water-soluble elastin When type I collagen or water-soluble elastin is used, its concentration may be determined as long as it has the characteristics of the above-mentioned medium (that is, it is liquid in vitro and semi-solid in vivo). Can be set to. Specifically, in the case of type I collagen, about 0.02 mass. /. To about 2.0% by weight, preferably about 0.05% to about 1.0% by weight, and more preferably about 0.1% to about 0.5% by weight. When water-soluble elastin is used, about 1.0% by mass to about 80% by mass. / 0 , preferably 5.0% to about 40% by weight, more preferably about 10% by weight. /. It is about 30% by mass.
- injection means that cells and a medium are introduced into a predetermined place by using a tapered device such as a needle or a catheter.
- the dissociation of the dissected cavity is promoted by promoting thrombosis and organization, so that the dissected cavity can be ruptured, advanced, aneurysm, etc. It is possible to prevent, avoid surgical treatment and lead to a cure.
- the method by applying the method to a case of a covered rupture of an aneurysm, the formed thrombus can be organized and led to healing, and surgery is not required.
- the present invention is used in combination with stentgraft, which is a conventional technique, to form an aneurysm or false lumen isolated (EX c 1 usion) by a stent draft. It is possible to promote the formation of insufficient thrombus in the formed thrombus, and to further organize the formed unstable thrombus. This can overcome the biggest problems with such endovascular treatments: the inflow of blood into the aneurysm or dissociated pseudolumen and the persistence of isolated aneurysm or dissociated pseudoluminal blood pressure (endotension). Dramatic improvement in treatment results can be expected.
- the present invention promotes thrombosis of insufficient thrombus formed in aneurysms in which coils are placed.
- Organizing an unstable thrombus can prevent the coil from being compressed and prevent the thrombus from organizing (coil CO mp action), and can be applied to internal organs, varicose veins, and arteriovenous pulse Etc. are also possible.
- the present invention which promotes thrombosis and further promotes the organization thereof, has a very wide range of applications in the field of endovascular treatment. It is expected that various uses in other fields, such as surgical materials, can be developed.
- FIG. 1 is a photograph of a rat carotid artery ligation model.
- Figure 2A is a photograph of a carotid artery specimen taken 4 weeks after cell therapy. You. A representative example in Group I is shown.
- FIG. 2B is a photograph of a carotid artery specimen taken 4 weeks after cell therapy. Illustrative examples in group I are shown.
- FIG. 2C is a photograph of a carotid artery specimen taken 4 weeks after cell therapy. Representative examples in the III group are shown.
- FIG. 2D is a photograph of a carotid artery specimen taken 4 weeks after cell therapy. A representative example in the IV group is shown. In the IV group, a clear organization of the thrombus is visually observed.
- FIG. 3A is a photomicrograph when transplanted cells were identified using Di I on an isolated carotid artery specimen (Group I).
- FIG. 3B is a photomicrograph when transplanted cells were identified using DiI on an isolated carotid artery specimen (II group).
- FIG. 3C is a photomicrograph of the transplanted cells identified using Di I on the isolated carotid artery specimen (II I group).
- FIG. 3D is a photomicrograph when transplanted cells were identified using DiI on an isolated carotid artery specimen (IV group). In groups II and IV, the transplanted cells (glowing orange) have been identified, indicating that they are alive.
- FIG. 4A is a photomicrograph when living cells were identified by staining the isolated carotid artery specimen with Hoechst33342 (Group I).
- FIG. 4B is a micrograph of living cells identified by staining the isolated carotid artery specimen with Hoechst33342 (Group II).
- FIG. 4C is a photomicrograph of living cells identified by staining the isolated carotid artery specimen with Hoechst33342 (III group).
- FIG. 4D is a photomicrograph of the isolated carotid artery specimen stained with Hoechst 33342 to identify living cells (Group IV). Group III In groups IV and IV, a large number of surviving cells (glowing blue) were identified in the thrombus. Combined with the findings in Figures 3A-D, it was confirmed that the transplanted cells had survived.
- FIG. 5A is a photomicrograph of the isolated carotid artery specimen when the collagen fibers were identified by trichrome staining (group I).
- FIG. 5B is a photomicrograph of the isolated carotid artery specimen when the collagen fibers were identified by trichrome staining (group II).
- FIG. 5C is a photomicrograph of the isolated carotid artery specimen when the collagen fibers were identified by trichrome staining (group II).
- FIG. 5D is a photomicrograph when the isolated carotid artery specimen was stained with trichrome to identify collagen fibers (IV group).
- IV group collagen fibers (stained in blue) were identified in the thrombus in greater amounts than in the other groups.
- FIG. 6A is a micrograph of the isolated carotid artery specimen when subjected to HE staining (group I).
- FIG. 6B is a photomicrograph of the isolated carotid artery specimen stained with HE (II group).
- FIG. 6C is a photomicrograph of the isolated carotid artery specimen when HE-stained (III group).
- FIG. 6D is a photomicrograph of an isolated carotid artery specimen stained with HE (IV group).
- III group and the IV group a thrombus rich in cellular components was observed.
- IV group angiogenesis was observed in the organized thrombus.
- FIG. 7A is a micrograph of the group III when the isolated carotid artery specimen was stained with an anti- ⁇ smooth muscle actin (smoothmusc 1 eactin) antibody.
- FIG. 7B is a photomicrograph of Group IV when the isolated artery specimen was stained with an anti- ⁇ smooth muscle actin (smoothmusc 1 eactin) antibody.
- group IV a large number of differentiated smooth muscle cells (glowing green) stained with anti-ct smooth muscle actin antibody were found in the organized thrombus.
- FIG. 8 is a graph showing the rate of collagen fibrosis 4 weeks after the treatment.
- the cross-sectional area of the collagen fibers formed in the thrombus in each group was measured using image analysis software, and was shown as a percentage of the cross-sectional area of the entire thrombus.
- FIG. 9A is a photograph of the collected external jugular vein patch.
- FIG. 9B is an intraoperative photograph in which an external jugular vein patch was sewn to the aortic wall incision to create an aortic aneurysm. .
- FIG. 10 is a photograph of a DSA (angiography) image of the descending aorta one week after the operation. A cystic aneurysm has been created.
- DSA angiography
- FIG. 11 is a photograph of a stent graft produced by coating a Z stent with e-PTFE.
- Figure 12A is a photograph of a DSA (angiogram) image after excluding the aortic aneurysm and performing endovascular treatment on the thoracic aortic aneurysm. The cyst was excluded.
- DSA angiogram
- FIG. 12B is a photograph of a DSA (angiogram) image after excluding the aortic aneurysm and performing endovascular treatment on the thoracic aortic aneurysm. An aneurysm has been excluded.
- DSA angiogram
- FIG. 13A is a photomicrograph of the aortic aneurysm-excised specimen when subjected to HE staining. In the case of control using only intravascular treatment, the organization is not enough and the area indicated by the arrow The erythrocytes are found in the position.
- FIG. 13B is a micrograph of the aortic aneurysm-excised specimen when subjected to HE staining. In the case of cell transplantation, the entire lumen of the aneurysm was organized and no clear red blood cells were observed.
- FIG. 14A is a high magnification micrograph of the aortic aneurysm-excised specimen when subjected to HE staining.
- red blood cells whose morphology was maintained at the site indicated by the arrow were confirmed, suggesting that blood flow remained.
- FIG. 14B is a photograph of a high-magnification microscope when an aortic aneurysm excised specimen is stained with HE. In the case of addition of cell transplantation, the entire lumen of the aneurysm was organized, and only an image in which red blood cells had already been ruptured and absorbed was observed at a very small portion as indicated by the arrow.
- Fig. 15A is a photomicrograph when collagen fibers were identified by trichrome staining of an aortic aneurysm excised specimen (control example).
- Fig. 15B is a photomicrograph when collagen fibers were identified by trichrome staining of an aortic aneurysm extirpated specimen (cell transplantation added example). Collagen fibers (stained in blue) were identified in the lumen of the aneurysm in a larger amount in the cell transplantation-added case than in the control case with only intravascular treatment.
- a primary large-scale culturing step to increase the number of cells by culturing the cells after harvesting the autologous cells (2) The cells added in this way are liquid in vitro and A three-dimensional culturing step of three-dimensional culturing in a medium that becomes semi-solid in vivo, (3) a medium containing autologous cells that has undergone this three-dimensional culturing step is injected into the body of the recipient using a needle, a catheter, etc.
- Each of the steps of an injection step of injecting into a place where it is desired to promote thrombosis and / or organization of the thrombus is performed.
- Gluteus gluteus and quadriceps muscles of Lewis rats were collected and immersed in D-MEM medium.
- the muscle was minced (mince;) in the medium and immersed in TypexI collagenase for 2 hours.
- the cells were immersed in dispase for 1 hour, stirred, and the supernatant was centrifuged, washed, and the cells were collected.
- the collected cells were cultured in a fibronectin dish in a D-MEM medium containing 10% FBS for 30 minutes, and the culture was recovered after shaking. Next, the cells were cultured in a D-MEM medium containing 10% FBS for 4 days in a laminin dish until they became confluent. Muscle satellite cells were collected at the confluence and stored frozen at 180 ° C.
- Lewis neonatal rat skin was collected and immersed in D-MEM medium.
- the collected rat skin was immersed in Type XI collagenase at 4 ° C for 40 hours, and the dermal tissue was exfoliated and collected.
- the dermal cells were cultured in a D-MEM medium containing 10% FBS for 10 days until they became confluent. Fibroblasts were collected at the confluent site and stored frozen at 180 ° C.
- Type I Type I collagen gel 3D medium While keeping the temperature at 4 ° C, (1) 0.3% acid-soluble Type I collagen solution (Cell matrix Type I-A, manufactured by Nitta Gelatin Co., Ltd.), (2) 10-fold concentration of D— MEM medium, (3) Reconstitution buffer (0.05 mL of sodium hydroxide solution 100 mL + sodium bicarbonate 2.2 g + HE PES 4.77 g) was prepared and mixed at a dose ratio of 8: 1: 1. Later, they were stored on ice.
- Reconstitution buffer 0.05 mL of sodium hydroxide solution 100 mL + sodium bicarbonate 2.2 g + HE PES 4.77 g
- fibroblasts and muscle satellite cells prepared in a.i) and a.ii) above, and dilute these cells with Dil (Cell Tracker TM CM-I Dil, Molecular Pros Inc. (Eugene Oregon).
- Dil Cell Tracker TM CM-I Dil, Molecular Pros Inc. (Eugene Oregon).
- Group III 50 ⁇ L of Type I collagen gel medium containing 1 ⁇ 10 6 fibroblasts
- Group IV 50 ⁇ L of Type I collagen gel medium containing 0.5 ⁇ 10 6 fibroblasts and muscle satellite cells each
- a 12-week-old rat was intraperitoneally administered with 5 Omg / kg of nemptal and anesthetized by intramuscular injection of 0.01 mg / kg of atto-pin.
- the left common carotid artery of the anesthetized rat was exposed, and ligated with a 40 silk thread at the bifurcation of the internal and external carotid arteries to form an unstable thrombus on the central side.
- the carotid artery was fixed with formalin, the carotid artery was excised (Figs. 2A-2D), and the degree of thrombosis was visually observed.
- the carotid artery was examined by HE staining, and the survival rate (vlaility) of the transplanted cells labeled with Hoechst33333 staining and DiI was evaluated.
- the degree of collagen fiber formation was examined by trichrome staining, and immunohistochemical staining was performed with a smooth muscle actin (smooth musc 1 eactin) antibody (ST G. Louis, St. Louis, Missouri). The cell differentiation potential was examined.
- NIH National Institutes of Health
- Type I collagen By keeping Type I collagen at 4 ° C at the time of injection, it remained liquid and could be injected with a 24 G needle, but became semi-solid after being injected into the living body.
- fibroblast transplantation group (Group III) and fibroblast + muscle satellite cell transplantation group (Group IV), use only D-MEM medium (Group I) or Type I collagen gel medium only (Group II). The collagen fiber formation was clearly promoted compared to the injection (Fig. 5A-Fig. 5D).
- the fibroblast + muscle satellite cell transplantation group (Group IV) has a greater number of cells differentiated into smooth muscle than the other groups, promotes fibrosis, and develops capillaries. Organized thrombi that could withstand pressure stress were formed extensively (Fig. 6A-Fig. 6D, Fig. 7A-Fig. 7B).
- fibroblasts and muscle satellite cells are selected as autologous cells.
- cells that promote thrombosis and organization of thrombus can be freely selected as long as they can be collected. Can be selected and used in combination
- the left thoracotomy was performed on the beagle dog under tracheal intubation under general anesthesia, and the descending aorta was removed.
- Heparin is administered systemically with lmgZkg to block the descending aorta.
- FIG. 9A-Fig. 9B A 3 cm long external jugular vein patch previously collected is sewn to the aortic wall incision to create an aortic aneurysm (Fig. 9A-Fig. 9B).
- DSA was performed to confirm that a saccular aortic aneurysm was created (Fig. 10).
- Muscle satellite cells were collected at the confluence and stored frozen at 180 ° C.
- the fibronectin dish after collecting the culture solution of the previous operation was cultured in a D-MEM medium containing 10% FBS until the cells became confluent. The cells were passaged once at the confluent site, and fibroblasts were collected and stored frozen at 180 ° C.
- a beagle dog for which an aortic aneurysm was created in a Open a thoracotomy under a general anesthesia tracheal tract, and a stent graft made by coating a Z-stent with e-PTFE from the abdominal aorta to the thoracic aortic aneurysm (Fig. 11) ) was placed, and the aortic aneurysm was treated and endovascular treatment was performed for the thoracic aortic aneurysm (Fig. 12A-Fig. 12B).
- Fibroblasts were prepared by, and muscle satellite cells were thawed, line fibroblasts, muscle satellite cells, each 1 x 1 0 seven ZmL the T ype I collagen gel culture medium was maintained at 4 ° C After mixing, a three-dimensional culture was prepared to prepare a treatment solution.
- ii) After performing endovascular treatment on the thoracic aortic aneurysm, 1.5 mL of the therapeutic solution prepared in ii) was subsequently injected with a syringe into the wall of the excised thoracic aortic aneurysm to perform cell therapy.
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Cited By (2)
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JP2007045722A (ja) * | 2005-08-08 | 2007-02-22 | Kyushu Institute Of Technology | 水溶性エラスチンとそれを含む食品及び医薬 |
WO2018235899A1 (ja) * | 2017-06-22 | 2018-12-27 | 国立大学法人 東京医科歯科大学 | 筋サテライト細胞の培養方法 |
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