WO2007125916A1 - 移植用臓器の調製方法 - Google Patents
移植用臓器の調製方法 Download PDFInfo
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- WO2007125916A1 WO2007125916A1 PCT/JP2007/058845 JP2007058845W WO2007125916A1 WO 2007125916 A1 WO2007125916 A1 WO 2007125916A1 JP 2007058845 W JP2007058845 W JP 2007058845W WO 2007125916 A1 WO2007125916 A1 WO 2007125916A1
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- kidney
- cells
- mesenchymal stem
- derived
- transplantation
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- 238000011824 transgenic rat model Methods 0.000 description 1
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- 238000011282 treatment Methods 0.000 description 1
- 238000011269 treatment regimen Methods 0.000 description 1
- 210000003932 urinary bladder Anatomy 0.000 description 1
- 210000001635 urinary tract Anatomy 0.000 description 1
- 210000005166 vasculature Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- CZPRKINNVBONSF-UHFFFAOYSA-M zinc;dioxido(oxo)phosphanium Chemical compound [Zn+2].[O-][P+]([O-])=O CZPRKINNVBONSF-UHFFFAOYSA-M 0.000 description 1
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
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/38—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells
-
- 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
-
- 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
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3604—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
-
- 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
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3641—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the site of application in the body
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0684—Cells of the urinary tract or kidneys
- C12N5/0686—Kidney cells
-
- 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
- A01K2227/108—Swine
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2502/00—Coculture with; Conditioned medium produced by
- C12N2502/02—Coculture with; Conditioned medium produced by embryonic cells
- C12N2502/025—Coculture with; Conditioned medium produced by embryonic cells extra-embryonic cells, e.g. amniotic epithelium, placental cells, Wharton's jelly
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2506/00—Differentiation of animal cells from one lineage to another; Differentiation of pluripotent cells
- C12N2506/13—Differentiation of animal cells from one lineage to another; Differentiation of pluripotent cells from connective tissue cells, from mesenchymal cells
- C12N2506/1346—Differentiation of animal cells from one lineage to another; Differentiation of pluripotent cells from connective tissue cells, from mesenchymal cells from mesenchymal stem cells
- C12N2506/1353—Differentiation of animal cells from one lineage to another; Differentiation of pluripotent cells from connective tissue cells, from mesenchymal cells from mesenchymal stem cells from bone marrow mesenchymal stem cells (BM-MSC)
Definitions
- the present invention provides a method for preparing a mammal transplant organ, particularly a kidney.
- Organ regeneration has recently attracted much attention as a new treatment strategy.
- the possibility of regenerative medicine is the discovery of various tissue stem cells and the use of these neurons (Non-patent document 1), ⁇ cells (Non-patent document 2), muscle cells (Non-patent document 3), and blood vessels (non-patent document).
- the therapeutic effects of regeneration such as 4) have been reported and are gradually being recognized.
- examples of success using such strategies are limited to cells and simple tissues.
- anatomically complex organs such as kidneys and lungs have several different cell forces, and have advanced three-dimensional structures and cell information transmission systems. It may be difficult to respond.
- Non-Patent Document 1 J. Neurosci. Res. 69,925-933 (2002)
- Non-Patent Document 2 Nat. Med. 6, 278-282 (2000)
- Non-Patent Document 3 Nature 410,701-705 (2001)
- Non-Patent Document 4 Nat. Med. 5, 434-438 (1999)
- Non-Patent Document 5 Transplantation 77, S41-S43 (2004)
- Non-Patent Document 6 Science 276, 71-74 (1997)
- Non-Patent Document 7 birth Defects Res. 69, 250-256 (2003)
- Non-Patent Document 9 Exp. Nephrol. 10, 102-113 (2002)
- Non-Patent Document 10 Am. J. Kidney Dis. 31, 383-397 (1998)
- Non-Patent Document 11 J. Neurosci. Res. 60, 511-519 (2000)
- Non-Patent Document 12 Blood 98, 57-64 (2001)
- Non-Patent Document 13 J. Am. Soc. Nephrol.l 1, 2330-2337 (2001)
- Non-Patent Document 14 Methods 24, 35-42 (2001)
- Non-Patent Document 15 J. Clin. Invest. 105, 868-873 (2000)
- Non-Patent Document 16 J. Neurol. Sci. 65, 169-177 (1984)
- Non-Patent Document 17 Kidney Int. 64, 102-109 (2003)
- Non-Patent Document 18 Cytometry 12, 291-301 (1991)
- Non-Patent Document 19 Dev. Growth Differ. 37, 123-132 (1995)
- Non-Patent Document 20 Am. J. Physiol. 279, F65-F76 (2000)
- Non-Patent Document 21 Eur. J. Physiol. 445, 321-330 (2002)
- Non-Patent Document 22 Proc. Natl. Acad. Sci. USA 97, 7515-7520 (2000)
- Non-Patent Document 23 Nature 418, 41-49 (2002)
- Non-Patent Document 23 Am. J. Physiol. 280, R1865-1869 (2001)
- Non-Patent Document 24 Methods 24, 35-42 (2001)
- An object of the present invention is to provide means for achieving the creation of complex organs such as kidneys using mesenchymal stem cells derived from mammals.
- kidney represents a complex organ, it consists of several different cell types, has a high degree of three-dimensional structure, and its developmental process in the embryo has been well studied.
- Development of the kidney begins when the metanephric mesenchyme guides the nearby Wolff tube at the tail of the nephrogenic cord (Non-patent Document 8) to generate a ureteric bud (Non-patent Document 9). Growth proceeds as a result of reciprocal epithelial-mesenchymal signaling between the ureteric bud and the metanephric mesenchyme (10).
- hMSCs Human mesenchymal stem cells
- transplanting mesenchymal stem cells into the metanephric mesenchyme allows differentiation into mesangial cells, tubular epithelial cells, and glomerular epithelial cells. It is possible to disseminate into ureteral bud collecting and ureters by transplanting into ureters.
- the present invention provides:
- Transplanting a mesenchymal stem cell derived from a mammal into a fetus in a pregnant mammal host or the host power of a pregnant mammal and separating the mesenchymal stem cell into a separated fetus A method for preparing an organ for mammalian transplantation, characterized in that the mesenchymal stem cell transplantation site into the fetus is the intermediate mesoderm, and the time of transplantation is still in the immune tolerance stage of the host immune system. To prepare an organ for transplantation.
- Transplantation of mammalian mesenchymal stem cells into the fetus is performed by separating the fetus from uterine force, transplanting the cell into the fetus, and then further developing in vitro using whole embryo culture 1 The method according to any one of -7.
- mammalian mesenchymal stem cell is a human mesenchymal stem cell. It consists of.
- the present invention has provided a new means for autotransplantation of autologous organs, particularly kidneys.
- the mesenchymal stem cells are collected and transplanted to the desired site of the fetus in the pregnant mammal host or the fetus of the pregnant mammal, and the fetus is separated, and the kidney is created, It was then possible to return the developed kidney to self.
- FIG. 1-2 is a diagram showing extrauterine division of the renal primordia using relay culture.
- hematoxylin Zeosin staining (b) and whole mount in situ hybridization (c) for C-ret are shown.
- FIG. 2 is a diagram showing the proportion of donor-derived cells in the culture-derived metanephros and evaluation of their DNA ploidy.
- M is a peak with a large amount of information.
- FIG. 3-1 is a diagram showing the distribution of transplanted hMSCs into kidney constituent cells. X-gal assembly of the metanephros generated after relay culture was followed for transplanted hMSCs.
- FIG. 3-2 is a diagram showing the distribution of transplanted hMSCs into kidney constituent cells.
- B The serial sections were searched with an optical microscope.
- C Tissue sections were subjected to two-color immunofluorescence staining of ⁇ -gal (left) and WT-1 (right).
- FIG. 3-3 is a diagram showing the distribution of transplanted hMSCs into kidney constituent cells.
- the metanephros produced after relay culture were digested and single cells were FACS-galactosidase assayed.
- FIG. 4 is a diagram showing infusion and culture of hMSCs in the separated metanephros.
- A X-gal assembly of the metanephros obtained after 6 days of organ culture.
- B shows RNA extracted and subjected to RT-PCR.
- FIG. 5-1 is a diagram showing therapeutic kidney reconstitution in a-gal A-deficient Fabry mice. As described above, the bioactivity of the resulting metanephric a-gal A enzyme was evaluated using a fluorometer.
- Fig. 5-2 is a diagram showing therapeutic kidney reconstitution in a-gal A-deficient Fabry mice.
- organ culture was performed in the presence of Gb3, and accumulation in the metanephros was evaluated by immunostaining for Gb3.
- FIG. 6 shows the appearance of the metanephros transplanted into the greater omentum.
- FIG. 7 shows a systematic analysis of the metanephros (2 weeks) transplanted into the greater omentum.
- FIG. 8 is a diagram showing transplantation (2 weeks) of kidney primordia at different stages to the greater omentum.
- Figure 9 shows a new kidney produced by improved relay culture (2 weeks).
- FIG. 11 shows an electron micrograph of a new kidney transplanted into the greater omentum.
- LacZ-positive human mesenchymal stem cell strength is also produced in LacZ rats by improved relay culture (2 weeks) It is a figure which shows the tissue findings of the manufactured new kidney.
- FIG. 13 is a view showing a new kidney produced by improved relay culture (4 weeks).
- FIG. 14 is a diagram showing a urine-like liquid with new kidney strength.
- FIG. 15 Time-laboratory observation with a fluorescent stereomicroscope, and the movement of the substance labeled on the intermediate mesoderm.
- sorted mesenchymal stem cells are collected and transplanted into a fetus in a pregnant mammalian host or a fetus isolated from a pregnant mammalian host.
- This is a method for preparing kidneys for transplantation of mammals, particularly humans, by inducing ⁇ .
- mammals include, for example, humans, pets, such as monkeys, mice, hidges, pigs, goats, horses (especially horses), inu. Organs such as cats, rabbits, hamsters, guinea pigs, rats and mice can be prepared.
- the host include, for example, pigs, and other suitable animals include transgenic pigs such as transgenic, knockout, and knockin.
- Other examples include ungulate animals such as ushi, hidge, pigs, goats and horses.
- a mouse or the above-mentioned ungulate genetically modified animal, particularly a transgenic animal is preferably exemplified.
- the mesenchymal stem cells are preferably mesenchymal stem cells derived from the recipient to be transplanted.
- the recipient is a human, it is isolated from human bone marrow, blood or umbilical cord blood.
- mesenchymal stem cells (hMSCs) collected from the recipient's bone marrow, blood, or umbilical cord blood are preferred.
- the sorting method is based on a general surgical medical technique. Sorted cells are selected at optimal conditions, preferably in culture for 2-5 cell passages.
- a medium kit exclusively for human mesenchymal stem cells manufactured by Cambrex BioScience is preferably used for the purpose of continuing the culture without transformation of hMSCs.
- a mesenchymal stem cell is introduced with a desired gene using a procedure such as adenovirus and / or retrovirus, if desired.
- a gene is introduced so that glial cell line-derived neurotrophic factor (GDNF) is expressed for the purpose of assisting kidney formation.
- GDNF glial cell line-derived neurotrophic factor
- This transformation has been confirmed to increase the formation rate of injected stem cell-derived kidneys from 5.0 ⁇ 4.2% to 29.8 ⁇ 9.2%.
- the prepared mesenchymal stem cells are then transplanted into a fetus in a pregnant mammalian host.
- hMSCs can be transplanted directly into an in vivo fetus to form a kidney in the uterus.
- Transplantation is performed using a general surgical medical technique, such as a micropipette under an echo.
- the amount of cells to be transplanted is 0.5 to 1.0 ⁇ 10 3 .
- a mesenchymal stem cell is directly transplanted into an in vivo embryo of a large pregnant mammal such as a pig by a transuterine approach, and the growth is continued in vivo as it is to grow into a transplanting kidney.
- the subsequent steps of “whole embryo culture” or “organ culture” can be added.
- the kidney for transplantation is sufficiently grown and is not particularly necessary!
- the prepared hMSCs are transplanted to a fetus isolated from a pregnant mammalian host (uterus), and then used for organ formation (transplantation kidney) in vitro using whole embryo culture. It can be matured in the fetus until the initial stage is completed and then further cultured in organ culture to become a transplant kidney. In addition, transplant kidneys are transplanted into the greater omentum of mammals including humans.
- the timing of implantation of the prepared hMSCs into the fetus is selective.
- E9-12, in particular 10-12, more preferably E10-11.5 was suitable.
- the same stage embryo can be suitably used even in large mammalian pigs. However, before and after that, it can be applied by selecting conditions. However, it is important that at least the time of transplantation, the stage of embryo development is still the stage of immune tolerance of the host immune system.
- the present invention has established a method for generating autologous organs from autologous mesenchymal stem cells using an endogenous growth system of an immunocompromised heterologous host.
- a feature of the present invention is the selection of the site of transplantation of mesenchymal stem cells into the fetus.
- the site of transplantation of mesenchymal stem cells into the fetus is the site corresponding to kidney development in the host. For this reason, the transplantation needs to be performed at a time when it can be determined that it is an equivalent part of the kidney, but it is preferable that the kidney blast is in a budding state before the start of development.
- mesenchymal stem Cells can be transplanted into metanephric mesenchyme and differentiated into mesangial cells, tubule epithelial cells, and glomerular epithelial cells. Can be differentiated into ducts and ureters.
- “Whole embryo culture” in the present invention is performed when hMSCs are transplanted into a fetus isolated from a pregnant mammalian host (uterus).
- the overview of whole embryo culture is that hMSCs are transplanted into a fetus obtained by separating the uterus from the mother and removing the fetus separated from the outer membrane layer including the uterine wall, decidua, and Reichert membrane. Culture in a culture bottle.
- some improvements and Z or some steps may be omitted from the above culture method. Good. More specifically, it is as follows, but is not particularly limited.
- E stage embryo date
- E 9-12, especially E10-12, more preferably E10-11.5, most preferably El 1.5 rat embryos are separated from the outer membrane layer including the eclampsia wall, decidua and Reichert membrane.
- Sarahko opens the yolk sac and amniotic membrane so that hMSCs can be injected, but leaves the chorion allantoplacenta intact.
- Embryos that have been successfully injected with hMSCs are cultured in a culture bottle containing 3 ml of culture medium (glucose, benicillin G, streptomycin, and amphotericin B) in centrifuged rat serum.
- the culture bottle rotates in an incubator (model number RKI10-0310, Ikemoto, Tokyo).
- the cultivation time is 12 hours to 60 hours, preferably 24 hours to 48 hours, and most preferably 48 hours.
- the morphological and functional evaluation is performed to confirm the organ organ of the kidney for transplantation. After this confirmation, the organ prototype is separated from the fetus, and preferably the following organ culture is performed.
- organ culture in the present invention, the 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 168 hours, preferably 18 hours to 72 hours, more preferably 24 hours to 48 hours, and most preferably 24 hours. In other words, transplanting to the greater omentum at about 24 hours is the most efficient.
- the culture temperature is 20 ° to 45 °, preferably 25 ° to 40 °, and most preferably 37 °.
- the purpose of “organ culture” in the present invention If it is possible to achieve the purpose of culturing the transplanted kidney, some improvements and Z or some steps may be omitted from the above culture method. Details are described in J. Clin. Invest. 105, 868-873 (2 000) (Non-patent Document 15), but are not particularly limited.
- the outline of “relay culture” in the present invention is that the whole embryo culture is performed for 2 to 60 hours, and then the organ culture is performed for 12 to 168 hours.
- the outline of the “improved relay culture” in the present invention is that the whole embryo culture is performed for 2 hours to 60 hours, then the organ culture is performed for 12 hours to 36 hours, and further transplanted to the greater omentum.
- the host Since the size of the organ is similar to the organ originally held by the host animal, for example, in order to form a kidney that can function sufficiently in humans, the host is approximately the size of a human organ. It is preferable that the mammal has a thickness. However, if the kidney does not need to be completely homologous, dialysis can be performed sufficiently if it has one-tenth of the total function, and it can maintain sufficient life. For this reason, the optimal host is a pig, and the organ size of a miniature pig is considered sufficient.
- the force of the kidney that has grown forcefully is confirmed from its function, and then is separated from the host and supplied to the recipient.
- This transplantation site is preferably an example in the greater omentum of the recipient. In the case of the kidney, this transplant completes the formation of a clonal kidney that continues to grow in vivo and exerts kidney function.
- the method of “transplanting a kidney for transplantation into a greater omentum of a mammal including a human” in the present invention is a force that can be performed by a normal surgical prescription, for example, picking up a tissue to be transplanted with a sharp insulator, In this method, a slight cut is made in the surface of the omentum fat yarn and weaving, and the yarn and weaving is embedded in it. It can also be transplanted to the greater omentum using an endoscope.
- the formed kidney In order to prevent the formed kidney from contaminating the host-derived antigenic substance, it is effective to convert the transplanted cells into the following traits.
- cells derived from mesenchymal stem cells and cells derived from the host animal are mixed. Since mixed host-derived cells may cause immune rejection when the kidney is transplanted into a recipient, it is necessary to thoroughly remove the host-derived cells after kidney formation.
- a host animal that can induce programmed cell death in a controlled manner was created. Form kidneys in animals. After transplanting mesenchymal stem cells into this part of the host animal embryo and creating a kidney, induce cell death specifically for the host cells and completely remove the host-derived cells before transplanting to the recipient .
- mice wild-type Sprague-Dawley rats were purchased from Sankyo Lab Service (Tokyo) and used.
- a breeding colony of Fabry mice was established from a mating pair donated by R.O. Brady (National Institute of Health, Bethesda) at the Experimental Animal Center of Jikei University School of Medicine. The midpoint of the day when the vaginal plug was observed was 0.5 days.
- the animals were housed in a ventilation (positive pressure air flow) rack and mated and bred in the absence of pathogenic bacteria. All experimental procedures were approved by the Jikei University University Animal Experiment Committee.
- HMSCs obtained from the bone marrow of healthy volunteers were used.
- a replication-deficient recombinant adenovirus having human GDN FcDNA (AxCAhGDNF) was prepared and purified as described above (Non-patent Document 11).
- Packaging cells that produce recombinant retroviruses containing the bacterial LacZ gene (MFG-LacZ) were donated by H. Hamada (Sapporo Medical University). Adenovirus infection and retrovirus infection were performed as described above (Non-patent Documents 12 and 13). Cells are labeled with ⁇ , ⁇ '-dioctadecy ⁇ 3,3,3,3-tetramethylindocarbocyanine (Dil (Molecular Probes; 0.25%, wt / vol) in 100% dimethylformamide and urine using a micropipette. Injection into the germination site of tube buds.
- Dil Molecular Probes
- Non-patent Document 15 kidney primordia were isolated and cultured.
- Gb3 globotriaosylceramide
- the cultured post-renal kidney was cultured in the presence of ceramide deoxyside (1 nmol, Sigma) (Non-patent Document 16).
- the enzymatic activity of the metanephros ⁇ -galatatosidase A (a-gal A) was evaluated by fluorescence analysis as described above (Non-patent Document 17).
- the metanephros produced by relay culture were digested in collagenase type I (lmg / ml) for 30 minutes and labeled with fluorescein 'digalatatoside (Molec ular Probes) using temporary permeability due to hypotonic shock.
- Non-patent Document 18 FACS-Gal Atsey. LacZ positive cells Fractionation was performed using a cell sorter (Becton Dickinson). Aquaporin-1 (AQP-1), parathyroid hormone (PTH) receptor 1, 1 a hydroxylase, Na + -HCO—cotransporter 1 (NBC1),
- RT-PCR glomerular epithelial protein l
- the cells were stained with propidium iodide and the amount of DNA was evaluated using a flow cytometer.
- kidney primordia In order to examine the optimal conditions for the growth of kidney primordia in the greater omentum, rat post-renal tissue was divided according to the growth stage and whether or not a nephrectomy was performed, and the degree of growth after transplantation was evaluated. In accordance with the optimum conditions, the kidney primordia prepared above were further transplanted into the greater omentum of the recipient. Two weeks later, it was confirmed by immunostaining and electron microscopy whether or not the tissue was highly classified.
- the recipient's blood flow was poured into the new kidney, it was transplanted into the greater omentum of a LacZ transgenic rat, and the blood vessels in the new kidney were confirmed to be derived from the recipient. Furthermore, the LacZ gene was also introduced into the human mesenchymal stem cells to be injected, and the blood vessel and donor-derived nephron were integrated to confirm the strength.
- the recipient's bloodstream circulates, and the recipient's blood is filtered for the recipient's blood to grow urine for 4 weeks in order to examine the possibility of producing urine.
- the urea nitrogen concentration and creatinine concentration in the liquid accumulated inside were measured and compared with the serum concentration to confirm the presence or absence of urine production ability.
- Non-patent Document 14 The whole embryo culture system was optimized so that a constant oxygen concentration could be continuously supplied to a rotating culture bottle to improve fetal growth outside the uterus.
- rat embryos E11.5 were mixed with yolk sac, amniotic membrane, and chorionic allantoplacenta with glucose (10 mg / ml) in a culture bottle containing 100% freshly centrifuged rat serum medium.
- rat embryos were evaluated for eclampsia by comparison with embryos grown in E11.5, E12.0, E12.5, El 3.0, E13.5 in the pupae.
- the fetuses were evaluated for heart rate, general blood circulation, and general morphology.
- the metanephros were isolated from fetuses and organ-cultured for 6 days. Using this combination (relay culture), the kidney primordium continues to differentiate and grow in vitro, and repeats tubule formation and ureteric bud branching. This was confirmed by hole mount in sit u hybridization diagram 2 (c) for ret. This indicates that the metanephros can continue to grow until the kidney is completed outside the uterus, even if the fetus is removed from the uterus before the ureteric buds reach the germination stage.
- HMSCs were injected into the kidney formation site of rat embryos using the system described in A.
- hMSCs forcibly expressing the LacZ gene using retrovirus and fluorescently labeled with Dil can further transduce GDNF using adenovirus ( Figure 2 (b)), or Without injection (Fig. 2 (a)), it was injected into the germination site of the ureteral bud of the rat embryo.
- a total of 1 x 10 fetal hMSCs were then injected into the mesoderm between the somite and lateral plate, at the level of segment 29 for rats and at the level of segment 26 for mice.
- Non-patent Document 15 We estimated these levels to be ureteric bud germination sites by in situ hybridization for the previous c-ret (Non-patent Document 15). The success of the injection was confirmed by the fact that the injected hMSCs were detected along the Wolff tube by an in situ hybridization method that detects the human genome AluI / II that identifies only human cells.
- Non-Patent Document 10 This transient GDNF expression significantly increased the number of donor-derived LacZ-positive cells in the kidney (29.8 ⁇ 9.2%, Fig. 2 (b)), which was revealed by FACS-Gal Atsey. This LacZ positive cell was sorted and its DNA content was evaluated using the intensity of propidium iodide. As a result, 68.8 ⁇ 11.4% of LacZ-positive cells in newly produced kidney primordia were euploid (Fig. 2 (c)).
- LacZ-positive cells The number of LacZ-positive cells was significantly increased (2.84 ⁇ 0.49 X 10 5 / kidney primordia) compared to the initial number of cells injected (1 X 10 embryos), which is the remaining multiple. Somatic cells suggest that most undergo cell division. Furthermore, in the fluorescence in situ hybridization method using human Y chromosome and rat Y chromosome, cells with two or more Y chromosomes were not recognized. These data indicated that host cells and donor cells are very unlikely to fuse.
- kidney primordium was X-gal assembled. LacZ-positive cells are dispersed throughout the metanephric primordia and are morphologically identical to glomerular epithelial cells (panel 1), tubular epithelial cells (panel 2), and stromal cells (panel 3) (Fig. 3-1).
- kidney primordium serial sections of the kidney primordium were searched with an optical microscope.
- the glomerular epithelial cells bound to the ureteral epithelial cells (arrows), and some of these cells were continuous tubules in the direction of the medulla (arrow).
- Fig. 3-2 (b) gl: glomerulus).
- hMSCs are not only separated into individual kidney cells but also form nephrons (basic units for filtration and resorption) after transplantation.
- double immunofluorescence staining of ⁇ -gal (left) and WT-1 (right) was performed to confirm differentiation into glomerular epithelial cells.
- WT-1 is known to be strongly expressed in glomerular epithelial cells at this stage (Non-patent Document 20). Both are positive for the same cell (middle). Some LacZ-positive donor cells are It shows that the differentiation to the spherical epithelial cells is completed (Fig. 3-2 (c)).
- Kidney primordia generated after relay culture were digested, and single cells were FACS-Gal assembled. Lac Z-positive cells are sorted, RT-PCR is performed, Kir6.1, SUR2, AQP-1, PTH receptor 1, 1 a hydroxylase, NBC-1, nephrin, podosin, GLEPP1, human specific j8 2 Microglobulin (MG) and rat GAPDH expression were analyzed. Lane 1 is the metanephros of control rats, lane 2 is hMSCs, and lanes 3-5 are kidneys formed by three different experiments.
- Donor-derived LacZ-positive cells are glomerular epithelial cell-specific genes (nephrin, podosin, GLEPP-1) and tubular epithelial cell-specific genes (AQP_1, 1 ⁇ -hydroxylase, sputum receptor 1, and NBC-1) (Fig. 3-3).
- ⁇ sensitive ⁇ + channel subunit, Kir6.1 / SUR2 Non-patent Document 21
- GDN F was further introduced into hMSCs expressing the LacZ gene using retrovirus using adenovirus, cultured, and then injected into the kidney (E13).
- the obtained metanephros were X-gal assembled (Fig. 4 (a)).
- the inset shows LacZ positive cells at high magnification.
- the injected hMSCs-derived cells remain aggregated and do not form a high-dimensional structure of the kidney.
- RNA was extracted and RT-PCR was performed.
- the newly generated kidney primordium before (lane 2) and after (lane 3) organ culture is shown.
- the mixture of metanephros and hMSCs before (lane 4) and after (lane 5) organ culture is shown.
- Lane 1 is the marker ( ⁇ X174 / HaeIII). As shown in the figure, it was confirmed that even when hMSCs were injected into cultured tissues that had already differentiated to the metanephros, no kidney-specific gene was expressed (Fig. 4 (b)). Due to the above events, only hMSCs injected before the ureteric buds germinate can be transformed to integrate into the kidney primordium and express kidney-specific genes during organ culture. Other articles The results indicated that these genes could not be expressed. Thus, according to the above, hMS Cs completes the first essential step involved in renal fate during whole embryo culture, and during organ culture further transition to stromal force epithelium, or stromal production It shows that they will receive a share for
- hMSCs-derived nephrons were transplanted into E9.5 embryos of knockout mice that do not express ⁇ -gal A gene (Fabry mice) and relay culture was performed (non- Patent Document 22).
- This a-gal A deficiency is known as Fabry disease in humans and causes abnormal accumulation of glycosphingolipid (Gb3) mainly in glomerular and tubular epithelial cells, resulting in renal failure after birth .
- Gb3 glycosphingolipid
- the a-gal A enzyme biological activity of the human mesenchymal stem cell-derived kidney primordia prepared by the above-described method was evaluated with a fluorometer as described above (Non-patent Document 19).
- wild type mice (left) and Fabry mice (right) were compared with the same protocol using the same protocol, and compared with wild type mice (655.0 ⁇ 199.6 nmol / mg / hour),
- the a-gal al bioactivity in the group is very low (19.7 ⁇ 5.5 nmol / mg / h), but the kidney primordium with human mesenchymal stem cell-derived nephrons injected in comparison with this has a significantly higher amount of a -gal A bioactivity was expressed (204.2 ⁇ 98.8 nmol / mg / hour, p ⁇ 0.05, Figure 5-1).
- hMSCs can be involved in the fate of an organ by growing the hMSCs at a specific position of the organ in whole embryo culture.
- hMSCs By injecting hMSCs into which the GDNF gene has been introduced into the fetus and then performing relay culture, it becomes possible to form nephrons rather than individual kidney constituent cells.
- These hMSC-derived cells are functional as indicated by their Gb3 metabolic capacity test.
- the hMSCs can be reprogrammed to other fate and organ structures as they enter and depend on the embryonic environment.
- An additional advantage of using hMSCs is that they are mesoderm in the primordial, but have the potential to distribute to cell types usually derived from ectoderm or endoderm. Patent Document 23).
- the host immune system does not grow well at this stage of whole embryo culture. Therefore, it is tolerant to heterologous cells.
- the present invention is the establishment of a method for generating autologous organs from autologous mesenchymal stem cells using an endogenous growth system of an immunocompromised heterologous host.
- FIG. 7 shows the histological analysis of the grown kidney.
- the blood vessels of the kidney were filled with red blood cells that were not found before transplantation, and histologically it was shown that the blood circulation was open.
- glomerular mesangial cells desmin positive
- WT-1 and synaptopodin positive cells highly differentiated glomerular epithelial cells that could not be confirmed before transplantation to the greater omentum were confirmed.
- Fig. 8 transplantation to the greater omentum of different stages of the metanephros.
- transplantation of immature metanephric thread and tissue up to E12.5 did not cause subsequent growth, but it was shown that the kidney was grown in metanephric tissue after E13.5. .
- rat embryos E11.5 were cultured in whole embryos (48 hours), organ-cultured for 24 hours until they were able to continue growing in the greater omentum, and transplanted into the greater omentum (improved relay culture).
- a single nephrectomy was performed to further promote growth.
- Figure 9 shows the newborn kidney that grew after 2 weeks. Histological examination also confirmed that the blood circulation was open as described above, maintaining a highly differentiated glomerular structure.
- FIG. 12 shows the new kidneys produced in the LacZ rat omentum by this improved relay culture (2 weeks). Tubular tubules connected only to the vasculature in the kidney were also LacZ-positive, indicating that the injected nephrons derived from human mesenchymal stem cells and recipient-derived blood vessels were integrated.
- Fig. 13 shows the morphology of the new kidney grown for 4 weeks in the greater omentum. It was determined that hydronephrosis was formed by the urine produced because the kidney had no ureteral opening. Therefore, when the liquid stored in the ureter was collected and the force of urine was examined, it was found that the urea nitrogen concentration and creatinine concentration were significantly higher than those of serum, and that the urine was filtered through glomeruli. Was suggested. During the 2 to 4 weeks when the kidney grows and urine is formed, the urinary tract of the cloned kidney is opened to the recipient's ureter, bladder, rectum, or skin to form the urine outlet. It is effective to make it.
- Figure 14 shows urine-like fluid from a new kidney.
- Shiroyama Chicken Farm (Tsukui-gun, Kanagawa Prefecture)
- a chick sperm egg (Hipeko 'Nera species) that has also obtained force is generated for 34 to 35.5 hours in an incubator at 38 ° C, and it reaches the stage 9 to ll of Milton. Lengthened.
- the intermediate mesoderm was selected as the transplantation site, and a labeling substance was introduced here to track the movement associated with development.
- Dil Molecular Probes
- This dye is lipophilic and is incorporated into the cell membrane, and has the property of emitting strong fluorescence, so it is effective for tracing the lineage of labeled cells.
- Dil was dissolved in absolute ethanol to 0.5% (wt / vol), and further diluted 10-fold with 0.3M sucrose.
- the labeling substance is introduced by opening a hole in the eggshell and approaching the embryo at each stage of development under a stereomicroscope-a small amount of Dil is micropipetted into the surrounding tissue of the middle mesoderm of the chick avian embryo. Injected so as not to damage.
- -Panett-Compton salt solution which is a physiological saline used for chick embryos, was appropriately applied to the embryos to prevent drying.
- the holes were closed with cellotape (registered trademark), and the development was continued in a 38 ° C incubator kept at a sufficient humidity, and the movement of Dil-labeled cells and the formation of ureteric buds were monitored with a fluorescent stereomicroscope. Imlabs observation was performed.
- stagelO which is the Tuol tube primordium (about 35 hours incubation)
- stagelO which is the Tuol tube primordium
- Dil was incorporated into the epithelial cells of the Wolf tube.
- the present invention enables a new development of kidney transplantation.
- a patient who has undergone dialysis due to kidney disease sorts his / her own mesenchymal stem cells, and uses this for the fetus or pregnant mammal of a pregnant host animal.
- Animal host power If transplanted to a separate fetus and transplanted to itself after a certain growth of the organ, the creation of an organ carrying the original function can be achieved.
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US12/298,099 US20090186004A1 (en) | 2006-04-24 | 2007-04-24 | Method For Preparing An Organ For Transplantation |
JP2008513221A JPWO2007125916A1 (ja) | 2006-04-24 | 2007-04-24 | 移植用臓器の調製方法 |
CA002676546A CA2676546A1 (en) | 2006-04-24 | 2007-04-24 | Method for preparing an organ for transplantation |
EP07742280A EP2014316A4 (en) | 2006-04-24 | 2007-04-24 | PROCESS FOR PREPARING AN ORGAN FOR TRANSPLANTATION |
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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 |
JP2012508691A (ja) * | 2008-11-12 | 2012-04-12 | テンジオン, インク. | 単離した腎細胞およびその使用 |
US11066666B2 (en) | 2010-05-12 | 2021-07-20 | Inregen | Bioactive renal cells |
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CN117085181A (zh) * | 2014-12-19 | 2023-11-21 | 比奥斯株式会社 | 移植用脏器及脏器结构体 |
CN107041807B (zh) * | 2016-02-06 | 2022-08-02 | 复旦大学附属妇产科医院 | 一种磁性宫腔内装置 |
US11123372B2 (en) | 2016-07-29 | 2021-09-21 | Prokidney | Bioactive renal cells for the treatment of chronic kidney disease |
IL281561A (en) | 2021-03-16 | 2022-10-01 | Yeda Res & Dev | Methods and devices for growing mouse embryos outside the uterus |
CN114891737B (zh) * | 2022-04-25 | 2023-05-12 | 中山大学 | 一种多能干细胞来源肾脏间充质干细胞的制备方法及其应用 |
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JP2002529509A (ja) * | 1998-11-13 | 2002-09-10 | オシリス セラピューティクス,インコーポレイテッド | ヒト間葉幹細胞の子宮内移植で胎児を処置し間葉幹細胞を移植し移植器官を調製する方法と調製された雑種器官 |
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- 2007-04-24 JP JP2008513221A patent/JPWO2007125916A1/ja not_active Withdrawn
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JP2002529509A (ja) * | 1998-11-13 | 2002-09-10 | オシリス セラピューティクス,インコーポレイテッド | ヒト間葉幹細胞の子宮内移植で胎児を処置し間葉幹細胞を移植し移植器官を調製する方法と調製された雑種器官 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
JP5388138B2 (ja) * | 2008-07-02 | 2014-01-15 | 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 |
JP2012508691A (ja) * | 2008-11-12 | 2012-04-12 | テンジオン, インク. | 単離した腎細胞およびその使用 |
JP2016028578A (ja) * | 2008-11-12 | 2016-03-03 | テンジオン, インク. | 単離した腎細胞およびその使用 |
US11066666B2 (en) | 2010-05-12 | 2021-07-20 | Inregen | Bioactive renal cells |
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US20090186004A1 (en) | 2009-07-23 |
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CA2676546A1 (en) | 2007-11-08 |
EP2014316A4 (en) | 2010-07-28 |
JPWO2007125916A1 (ja) | 2009-09-10 |
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