WO1999003336A1 - Mammiferes transgeniques - Google Patents
Mammiferes transgeniques Download PDFInfo
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- WO1999003336A1 WO1999003336A1 PCT/JP1998/002927 JP9802927W WO9903336A1 WO 1999003336 A1 WO1999003336 A1 WO 1999003336A1 JP 9802927 W JP9802927 W JP 9802927W WO 9903336 A1 WO9903336 A1 WO 9903336A1
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- transgenic
- hdaf
- human
- complement
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/85—Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
- C12N15/8509—Vectors or expression systems specially adapted for eukaryotic hosts for animal cells for producing genetically modified animals, e.g. transgenic
-
- 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
- A01K67/0275—Genetically modified vertebrates, e.g. transgenic
-
- 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
- A01K67/0275—Genetically modified vertebrates, e.g. transgenic
- A01K67/0278—Knock-in vertebrates, e.g. humanised vertebrates
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
- C07K14/70596—Molecules with a "CD"-designation not provided for elsewhere
-
- 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
- A01K2207/00—Modified animals
- A01K2207/15—Humanized animals
-
- 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
- A01K2217/00—Genetically modified animals
-
- 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
- A01K2217/00—Genetically modified animals
- A01K2217/05—Animals comprising random inserted nucleic acids (transgenic)
-
- 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
- A01K2227/105—Murine
-
- 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
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2267/00—Animals characterised by purpose
- A01K2267/02—Animal zootechnically ameliorated
- A01K2267/025—Animal producing cells or organs for transplantation
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2267/00—Animals characterised by purpose
- A01K2267/03—Animal model, e.g. for test or diseases
Definitions
- the present invention relates to transgenic mammals. More specifically, the present invention relates to a transgenic non-human mammal having a gene for human complement regulatory factor (hDAF / CD55). More particularly, the present invention relates to livestock and experimental animals having the M3AF gene.
- hDAF / CD55 human complement regulatory factor
- C3b binds to the cell membrane surface of porcine tissue and activates C5 by forming C5 convertase, decomposing it into C5b and C5a.
- C5b also binds to the membrane, after which C6, C7, C8, C9 and the complement molecule react successively.
- MAC Membrane Auack Complex
- transgenic pigs and / or small experimental model animals that are easier to handle than pigs and to conduct various studies.
- the development of transgenic pigs that express at least the same level of hDAF as humans in the organs and tissues of interest and / or the development of small experimental model animals that are easier to handle than pigs are important in conducting research in this field and Or, it is considered useful in the development of clinical application methods. Therefore, as described above, the development of transgenic pigs expressing human complement regulatory factors has been attempted.
- the promoter gene of the transgene construct used to create transgenic pigs expressing the human complement regulatory factor gene which has been reported so far, has the following characteristics. (GA Langford et al., Transplant. Proc., 26, 1400, 1994; WL Fodor et al., Proc. Natl. Acad. Sci. USA, 91. 11153-11157, 1994; GW Byrne et al., Transplantation 63. 149-155, 1997) and / or (2) Puromota one associated with molecules that all tissues distributed in the body of an animal (e.g., beta -Y Uchin was Eta 2 K b).
- transgenic mice expressing hDAF have been attempted (N. Cary et al., Transplantation Proceedings, Vol. 5 (1), 400-401, 1993; D. Kagan et al., Transplantation Proceedings, Vol. 26 (3), 1242, 1994).
- the expression site and expression level of hDAF in transgenic mice developed differ from report to report. Strictly speaking, the site where human complement regulatory factor should be expressed (especially vascular endothelium).
- a transgenic mouse expressing at a level higher than that expressed in a human cell has not been developed.
- the present inventors have proposed a transgenic animal expressing hDAF in organs, organs, tissues and cells, particularly vascular endothelial cells, particularly humans, in which complement regulatory factors should be expressed.
- the preparation of mammals was studied.
- the organs and organs in which the complement control factor should be expressed using the porcine capture factor control factor (pMCP) promoter previously invented by the present inventors (see Japanese Patent Application No. 9-142961).
- the intended purpose is achieved by introducing a gene designed to express hF into tissues and cells, especially vascular endothelial cells, into the fertilized egg of the animal, transplanting it into the uterus of the recipient mother animal, and giving birth
- pMCP porcine capture factor control factor
- ⁇ J revealed that we can create enic animals.
- hDAF is expressed not only in various organs, tissues, and its vascular endothelial cells but also in erythrocytes and central and peripheral nerves. The expression level was higher than that of human cells. Furthermore, it was confirmed that hDAF was also expressed in red blood cells and nerves in the case of the transgenic pig of the present invention.
- the present invention has been made based on such findings, and an object of the present invention is to provide a transgenic animal useful in the fields of medicine and pharmacy. Disclosure of the invention
- the present invention relates to a non-human transgenic mammal having a human complement control factor (MF / CD55) gene and expressing the human complement control factor in organ tissues. Furthermore, the present invention relates to a transgenic mammal expressing human complement regulatory factor (MF / CD55) in vascular endothelial cells, particularly vascular endothelial cells in all tissues.
- MF / CD55 human complement control factor
- the transgenic mammal of the present invention preferably has a porcine complement control factor (pMCP) promoter upstream of the human complement control factor (DAF / CD55) gene.
- pMCP porcine complement control factor
- DAF / CD55 human complement control factor
- FIG. 1 is a diagram showing the structure of a transgene containing the pMCP promoter (5.4 kb) and hDAF cDNA.
- FIG. 2 is a diagram showing the structure of a transgene containing the pMCP promoter (0.9 kb) and hDAF cDNA.
- FIG. 3 is a diagram showing the structure of an introduction gene containing the hDAF promoter and hDAF cDNA used for comparison.
- FIG. 4 is a diagram showing the results of PCR reactions using hDAFcDNA specific primers, in FIG. (1) and ( 3) shows the results of pigs and mice confirmed to have hDAF cDNA, respectively, and (2) and (4) show the results of pigs and mice confirmed to have no hDAF cDNA among litters It is.
- FIG. 5 is a diagram showing the expression of hDAF-derived mBA in various organs of TgFl mice, comparative transgenic mice, and normal mice (non-transgenic mice).
- FIG. 1 is a diagram showing mRNA expressed in various organs of TgFl mouse;
- B is a transgenic mouse for comparison (gene for transfection containing hDAF promoter and hDAF cDNA (3)
- Fig. 3 is a diagram showing mRNAs expressed in various organs of a transgenic mouse obtained by introducing (Fig. 3);
- C shows mRNAs expressed in various organs of a non-transgenic mouse.
- the rightmost graph shows the expression of hDAF-derived mRNA in human lymphocyte cells (k562).
- Symbols B, H, K, Li, Lu, S and T in the figure mean brain, heart, kidney, liver, lung, spleen and testis, respectively.
- FIG. 6 is a diagram showing FACS analysis of erythrocytes collected from non-transgenic pigs among transgenic pigs and litters, using an anti-hDAF monoclonal antibody.
- A shows the expression frequency of hDAF in erythrocytes collected from transgenic pigs;
- B for comparison, nontransgenic diabetic litters
- FIG. 2 shows that hDAF is not expressed in erythrocytes collected from pigs.
- FIG. 7 is a diagram showing the degree of hemolysis when red blood cells collected from a transgenic animal (Kai) and a normal animal (martial) are reacted with human serum.
- (A) shows the results of examination on mouse erythrocytes
- (b) shows the results of examination on porcine erythrocytes.
- the horizontal axis in the figure shows the percentage of HNS in the complement-content-adjusted human serum, and the vertical axis shows the hemolysis rate.
- the present invention relates to a transgenic mammal other than a human, which has a gene for a human complement control factor (hereinafter, referred to as hDAF), and comprises a complement control factor for the human. It is expressed in organs and tissues, especially expressed in vascular endothelial cells.
- the mammal in the present invention is not particularly limited as long as it is a mammal other than a human, and examples thereof include a mouse, a rat, a hamster, a pig, a pig, a horse, a sheep, a heron, a dog, a cat, and the like. '-.
- the transgenic mammal of the present invention can be prepared by the following method.
- a gene for transfection by linking the promoter and hDAF cDNA.
- an appropriate vector for example, pGL-3 basic vector, pBluescript, etc.
- hMFcDNA for example, Medof, ME et al., Proc. Natl. Acad. Sci. USA., 84,
- the above-mentioned promoter is not particularly limited as long as it is a promoter capable of expressing hDAF in the body of a mammal.
- an endothelin promoter and the like can be exemplified.
- the present inventors have proposed a porcine complement regulatory factor (pMCP ) Promoters have been found to be particularly suitable.
- the nucleotide sequence of the porcine complement regulatory factor (pMCP) promoter is shown as SEQ ID NO: 1 (see Japanese Patent Application No. 9-142961).
- the transgenic mammal introduces the transgene prepared above into the pronucleus of a fertilized egg (pronuclear stage egg) of the mammal by a conventional method such as microinjection, and requires the fertilized egg. It is produced by transplanting into the oviduct or uterus of a female mammal (recipient mammal) that has been cultured or has not been cultured and has been immediately synchronized with a pseudopregnancy state, and obtains a litter.
- a female mammal recipient mammal
- centrifugation should be performed in advance according to an ordinary method.
- Confirmation that the produced offspring are transgenic mammals can be performed by a dot blotting method, a PCR method, an immunohistological method, a complement resistance test, and the like described below.
- the resulting transgenic mammal can be bred by mating according to a conventional method and obtaining a litter.
- cells of the transgenic mammal are subjected to reprogramming culture, with or without reprogramming, and nuclei are collected from the cells and transplanted (nuclear transplantation) into fertilized eggs that have been enucleated in advance.
- Transplant into the fallopian tube or uterus of the animal They can also be bred by obtaining litters.
- the transgenic mammal obtained by the present invention has the hDAF gene, and expresses hDAF in vascular endothelial cells of all organs, and exhibits resistance to human complement. It was confirmed to have.
- organs of the transgenic mammal of the present invention for example, heart, lung, liver, kidney, etc., or transplanting these organs into primate animals,
- DAF is useful for avoiding hyperacute rejection associated with xenotransplantation.
- a xenograft model is prepared by contacting human blood with organs of the transgenic mammal of the present invention, for example, heart, lung, liver, kidney, etc., or transplanting these organs into primate animals. If prepared, a drug that supplements the avoidance of hyperacute rejection during xenotransplantation.Treatment equipment, etc. and a drug to avoid acute or chronic rejection that is likely to occur after Z or hyperacute rejection Etc. can be contributed to the development.
- Transgenic mammal organs of the present invention eg, heart, lung, liver, kidney, spleen, etc.
- tissues eg, coronary arteries, cerebral dura etc.
- cells attached to ⁇ storage Eg, islets of Langerhans that produce insulin, nigral striatal cells that produce dopamine, etc.
- ⁇ storage Eg, islets of Langerhans that produce insulin, nigral striatal cells that produce dopamine, etc.
- organs of the transgenic mammal of the present invention eg, cells collected from organs such as liver and kidney, islets of Langerhans producing insulin, and nigrostriatal cells producing dopamine
- the cultured cells are appropriately incorporated into equipment, etc., and connected to a human patient with dysfunction of the corresponding organ via the extracorporeal circulation system, and used as a replacement or treatment for the dysfunctional organ It becomes possible.
- organs of the transgenic mammal of the present invention eg, cells collected from organs such as liver and kidney, islets of Langerhans producing insulin, and nigrostriatal cells producing dopamine
- a transgene was prepared by linking the pMCP promoter and hDAF cDNA in the following manner. That is, the luc. Gene was extracted from the pGL-3 basic vector (Promega) at the Ncol site and the Xbal site, and both ends on the vector side were blunted with T4 DNA polymerase. Next, the hDAF cDNA containing the first intron was excised at the Ascl site immediately before the ATG start codon and the Accl codon immediately after the TAG stop codon, and blunted with T4 DNA polymerase, and the blunt-ended portion of the above vector was used. Was inserted. Also, from the region containing the pMCP gene (Japanese Patent Application No. 9-142961) of the pig genomic phage library, about 5.4 kb of the portion corresponding to the promoter was cut out with EcoRI and Fspl sites, and the pB.luescript vector EcoRI And EcoRV site.
- a transgene (3) in which the hAF promoter and the hDAF cDNA were linked was prepared as follows.
- the hDAF promoter cuts out a region of about 3.8 kb corresponding to the promoter with a Hindll site and an Ascl site, blunt-ends the site, and places it on the Sinai site immediately upstream of the hDAF cDNA insertion site of the aforementioned vector. Inserted. Then, the region containing the above promoter and hDAF cDNA was cut out with Notl and Eco47II sites, and the gene for transfection was cut out.
- transgenic mammals (mouse)
- transgene was introduced into mouse fertilized eggs by the microinjection method and transgenic mice were prepared as follows.
- mice Female C57BL / 6 mice were bred to female CBA or C3H mice to obtain offspring. This female was used as an egg collection mouse (donor). After superovulation (administration of PMSG and hCG) to a single mouse, the mouse was bred with ICR mouse os, and a fertilized egg (pronuclear stage egg) was collected. The above-mentioned transgene (1) or (3) was injected into the pronuclear stage eggs by microinjection until the pronuclei could be expanded. Then, the pronuclear stage egg into which the transgene was injected was immediately transplanted into the oviduct of the recipient mouse. Transplanted into mouse uterus. And I got a baby. The recipient mouse was mated with a vasectomized mouse in advance to make a pseudopregnant state.
- transgenic pigs were prepared as follows. That is, crossbred sows of Landrace, Greater Buffalo and Deloch were used as pigs for egg collection (donor pigs). After superovulation treatment (administration of PMSG or FSH and hCG) to donor pigs, fertilized eggs (pronuclear stage eggs) were collected by artificial insemination using sperm of Delocked boars. The pronuclear stage eggs were processed by a centrifugal separator (12,000 ⁇ g, 8 minutes), and then the transgene (2) was injected by microinjection until the pronuclei could be expanded.
- the pronuclear stage eggs into which the transgene was injected were immediately transplanted into the oviducts of recipient pigs. And I got a baby.
- recipient pigs pigs that had been subjected to the above-mentioned superovulation treatment in advance and whose estrous cycle was synchronized with the donor pigs, or one pig after collecting fertilized eggs were used.
- the genomic DNA was extracted from the tail of the offspring obtained from the recipient mammal by a conventional method, and the transgenic mammal was identified and selected by the following two methods.
- Dot blotting method Genomic DNA of a test offspring was immobilized on a membrane and hybridized with a gene consisting of a part of hDAF cDNA which had been previously labeled with biotin. A transgenic mammal was identified by detecting the presence or absence of the introduced gene by performing a color reaction (Sumalite, manufactured by Sumitomo Metals) using alkaline phosphatase.
- FIG. 4 shows the results. As shown in FIG. 4, it was confirmed that among the offspring obtained from the recipient mammals, mice and pigs having hDAF cDNA in the genome were present. Note that 1 and 3 in Fig. 4 are the results of pigs and mice confirmed to have hFcDNA, respectively, and 2 and 4 in Fig. 4 indicate that hDAFcDNA was extracted from litters. The results are from pigs and mice confirmed not to have.
- mice Breeding of transgenic mammals (mouse) Mice identified as transgenic were bred to ICR mice to produce offspring carrying the transgene (referred to as TgFl mice).
- MRNA was extracted from various organs of TgFl mice, and the expression of hMF-derived mRNA in the organs was examined using a conventional RT-PCR method.
- mRNA was extracted from various organs in transgenic mice and normal mice (non-transgenic mice) obtained by introducing the transgene (3) containing the hDAF promoter and hDAF cDNA. Then, the expression of mRNA derived from hDAF was examined in the same manner as described above.
- Figure 5 shows the results.
- the symbols B, H, K, Li, Lu, S and T in the figure mean brain, heart, kidney, liver, lung, spleen and testis, respectively.
- the organs whose expression has been confirmed include atrial muscle of the heart, ventricular muscle and small and medium capillaries, endothelium of the capillaries, glomeruli of the kidneys, tubules and small and medium capillaries, capillary endothelium, liver hepatocytes, bile duct epithelium and small and medium capillaries endothelium, lung Alveoli, tracheal epithelium and small and medium capillaries endothelium, intestinal mucosa epithelium and small and medium capillaries endothelium, exocrine gland cells of the kidney, islets of Langerhans, arm duct epithelium and small and medium capillaries, capillary endothelium, white spleen of spleen The red
- transgenic mice obtained by introducing the transgene (3) containing the hDAF promoter and hDAF cDNA hDAF expression was observed only in the testis. However, no expression was observed in testicular vascular endothelial cells.
- hDAF protein was confirmed in pigs that were confirmed to be transgenic by the PCR method described in (1).
- a frozen section of the pig tail was prepared and reacted with a biotinylated anti-hDAF monoclonal antibody. Subsequently, peroxidase-labeled streptavidin was bound. A chromogenic substrate (diaminobenzidine; DAB) was allowed to act on this, and the expression intensity and expression site of the hDAF protein were examined by microscopic observation.
- DAB diaminobenzidine
- hDAF expression was observed in the small and medium-sized capillary endothelium of transgenic pig tissue sections obtained by introducing the transgene (2) containing the pMCP promoter and hDAF cDNA.
- hDAF expression was observed in tissues such as peripheral nerve, skeletal muscle, and stratified squamous epithelium. ; Confirmation of transgene expression in Enick mammals (pigs) (Confirmation of hDAF protein expression and expression intensity by FACS analysis)
- Porcine tissues that have been confirmed to be transgenic by the PCR method described in 4 and the immunohistochemical method described in 8 are subjected to FACS (Fluorescence-activated cell sorter, vector) using an anti-hDAF monoclonal antibody. It was subjected to FACScan (Dickinson) analysis to confirm the expression of hDAF protein.
- FACS Fluorescence-activated cell sorter, vector
- Fig. 6 shows the results of the same FACS analysis performed on non-transgenic pigs among litters.
- the horizontal axis represents the fluorescence intensity per cell, that is, the expression intensity of hDAF
- the vertical axis represents the number of cells per intensity.
- non-transgenic pigs did not express hDAF.
- FIG. 6 in the case of the transgenic pig obtained in this example, erythrocytes expressing hDAF and erythrocytes not expressing hDAF are mixed in the population of whole erythrocytes (referred to as mosaic). It is already known that the first generation (Founder) of the transgenic animal created by the microinjection method exhibits a mosaic, and that the remosaic is eliminated by conventional means such as crossing and breeding. ing.
- transgenic pigs obtained by introducing the transgene containing the pMCP promoter and hDAF cDNA express hDAF protein derived from hDAF cDNA in a wide range of organ tissues including vascular endothelial cells. Confirmation of transgene expression in transgenic mammals (Confirmation of hDAF protein function)
- the hDAF protein expressed on the cells of the transgenic mammal had the intrinsic function of the hDAF protein, ie, the inhibitory effect on the complement cascade reaction. This was confirmed by reacting human serum with red blood cells of a transgenic mammal and measuring the presence or absence of hemolysis.
- erythrocytes were used as the cells of transgenic mammals because (1) the presence or absence of membrane attack complex formation by the complement cascade reaction can be easily assayed by the presence or absence of hemolysis; (2) erythrocytes Because the membrane is more fragile than that of other cells (eg, leukocytes, vascular endothelial cells, etc.), the strength of the complement cascade reaction can be assayed more sensitively.
- Blood was collected from the tails of transgenic and non-transgenic mice, and from the ear vein of transgenic and non-transgenic pigs to obtain a red blood cell fraction. After diluting each erythrocyte with PBS, 30 ⁇ l was dispensed to each well of a 96-well microplate (1 ⁇ 10 ′ cells / well), and then complement content adjusted human serum (untreated normal human serum) [HNS] and human serum [HIS] previously inactivated [heated to 56 ° C for 30 minutes] are mixed at various ratios to adjust the content of human complement (serum). 70 ⁇ l was dropped into the above-mentioned well to react with erythrocytes (37 ° C, 1.5 hours). Thereafter, the absorbance of each supernatant solution at 405 ° was measured using a microplate reader (manufactured by Bio-Rad), and the percentage of hemolysis caused by the complement reaction was calculated.
- HNS normal human serum
- HIS human serum
- FIG. 7 shows the results. However, FIG. 7 (a) shows the results for transgenic mice, and FIG. 7 (b) shows the results for transgenic pigs.
- the horizontal axis in Fig. 7 shows the complement content adjustment
- the ratio of HNS in the human serum, that is, the concentration of human complement, is shown, and the vertical axis shows the hemolysis rate of each red blood cell.
- the fist mark is red blood cells collected from transgenic animals and the garden mark is red blood cells collected from normal animals.
- the erythrocytes of the non-transgenic animal lysed irrespective of the human complement content.
- haemolysis of erythrocytes in transgenic mammals was suppressed. From these results, it was confirmed that the erythrocytes of the transgenic mammal expressing the DAF protein have resistance to human complement.
- the population of the transgenic pig erythrocytes of this example was mosaic, but had resistance to human complement.
- Sequence type nucleic acid
- TTCTCCCCTA ATCTCCCAAA ATATGGGCAA AGGACAGGTA CCCGTGGCAC 500 TGGAAAAATA CAGGCAAGCA ACCCATGAGT ACATGAAAAG ATGCTCCAGG 550
- GGGAGAACAA TGGCCAAACC TTTCGTGATT TTGAAATCTA TCAGGCCACG 4750 AGACACTTCG GTAGCGGACG CTCAACCCTG GGAATCCCAA CTATTGTCCG 4800
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Description
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Priority Applications (6)
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AU79355/98A AU7935598A (en) | 1997-07-14 | 1998-06-30 | Transgenic mammals |
EP98929756A EP1004238B1 (en) | 1997-07-14 | 1998-06-30 | Transgenic pigs |
CA002297105A CA2297105A1 (en) | 1997-07-14 | 1998-06-30 | Transgenic mammals |
US09/462,740 US6825395B1 (en) | 1997-07-14 | 1998-06-30 | Transgenic non-human mammals expressing the human complement inhibitor (DAF/CD55) |
DE69832883T DE69832883T2 (de) | 1997-07-14 | 1998-06-30 | Transgene schweine |
AT98929756T ATE313256T1 (de) | 1997-07-14 | 1998-06-30 | Transgene schweine |
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JP9/205235 | 1997-07-14 | ||
JP20523597 | 1997-07-14 |
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WO1999003336A1 true WO1999003336A1 (fr) | 1999-01-28 |
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PCT/JP1998/002927 WO1999003336A1 (fr) | 1997-07-14 | 1998-06-30 | Mammiferes transgeniques |
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US (1) | US6825395B1 (ja) |
EP (1) | EP1004238B1 (ja) |
AT (1) | ATE313256T1 (ja) |
AU (1) | AU7935598A (ja) |
CA (1) | CA2297105A1 (ja) |
DE (1) | DE69832883T2 (ja) |
WO (1) | WO1999003336A1 (ja) |
Cited By (2)
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US8435520B2 (en) | 1999-05-10 | 2013-05-07 | Paolo Brenner | Combinations of immunosuppressive agents for the treatment or prevention of graft rejections |
US12058986B2 (en) | 2017-04-20 | 2024-08-13 | Egenesis, Inc. | Method for generating a genetically modified pig with inactivated porcine endogenous retrovirus (PERV) elements |
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EP1496066A4 (en) * | 2002-03-25 | 2006-09-13 | Japan Science & Tech Agency | ANTIBODIES RECOGNIZING PROLIFERATIVE HUMAN HEPATIC CELLLULES, PROLIFERATIVE HUMAN HEPATIC CELLS AND FUNCTIONAL HUMAN HEPATIC CELLS |
WO2007033221A2 (en) * | 2005-09-13 | 2007-03-22 | The General Hospital Corporation | Methods and compositions for inhibition of immune responses |
US9420770B2 (en) | 2009-12-01 | 2016-08-23 | Indiana University Research & Technology Corporation | Methods of modulating thrombocytopenia and modified transgenic pigs |
WO2012078968A2 (en) | 2010-12-10 | 2012-06-14 | Lifeline Scientific, Inc. | Machine perfusion with complement inhibitors |
CN116059378A (zh) | 2014-12-10 | 2023-05-05 | 明尼苏达大学董事会 | 用于治疗疾病的遗传修饰的细胞、组织和器官 |
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ES2060561T3 (es) | 1989-10-12 | 1996-08-01 | Imutran Ltd | Material biologico modificado. |
WO1993002188A1 (en) | 1991-07-15 | 1993-02-04 | Oklahoma Medical Research Foundation | Universal donor cells |
WO1997000951A1 (fr) * | 1995-06-20 | 1997-01-09 | Nippon Meat Packers, Inc. | Adn codant pour un inhibiteur du complement, d'origine porcine |
US6166288A (en) | 1995-09-27 | 2000-12-26 | Nextran Inc. | Method of producing transgenic animals for xenotransplantation expressing both an enzyme masking or reducing the level of the gal epitope and a complement inhibitor |
EP0940467B1 (en) * | 1996-05-17 | 2005-12-28 | Nippon Meat Packers, Inc. | Promoters for swine complement inhibitors |
-
1998
- 1998-06-30 CA CA002297105A patent/CA2297105A1/en not_active Abandoned
- 1998-06-30 US US09/462,740 patent/US6825395B1/en not_active Expired - Lifetime
- 1998-06-30 AU AU79355/98A patent/AU7935598A/en not_active Abandoned
- 1998-06-30 AT AT98929756T patent/ATE313256T1/de not_active IP Right Cessation
- 1998-06-30 DE DE69832883T patent/DE69832883T2/de not_active Expired - Lifetime
- 1998-06-30 EP EP98929756A patent/EP1004238B1/en not_active Expired - Lifetime
- 1998-06-30 WO PCT/JP1998/002927 patent/WO1999003336A1/ja active IP Right Grant
Non-Patent Citations (4)
Title |
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"STRIDES OF MEDICINE.", STRIDES OF MEDICINE, XX, JP, vol. 170., no. 09., 27 August 1994 (1994-08-27), JP, pages 744/745., XP002921846 * |
"STRIDES OF MEDICINE.", STRIDES OF MEDICINE, XX, JP, vol. 176., no. 07., 17 February 1996 (1996-02-17), JP, pages 444/445., XP002921845 * |
OKABE M.: "DEVELOPMENT OF TRANSGENIC MICE WHEREIN HUMAN COMPLEMENT CONTROL FACTOR HAS BEEN EXPRESSED IN FISICAL 1995, PREPARATION OF EXPERIMENTAL MODELS TO BE USED IN COMMON AMONG HETEROGRAFTING, VIRUS RECEPTOR AND REPRODUCTION IMMUNITY.", DEVELOPMENT OF TRANSGENIC MICE WHEREIN HUMAN COMPLEMENT CONTROLFACTOR, XX, XX, 23 April 1996 (1996-04-23), XX, pages COMPLETE., XP002921842 * |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8435520B2 (en) | 1999-05-10 | 2013-05-07 | Paolo Brenner | Combinations of immunosuppressive agents for the treatment or prevention of graft rejections |
US12058986B2 (en) | 2017-04-20 | 2024-08-13 | Egenesis, Inc. | Method for generating a genetically modified pig with inactivated porcine endogenous retrovirus (PERV) elements |
Also Published As
Publication number | Publication date |
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EP1004238A4 (en) | 2000-12-06 |
EP1004238B1 (en) | 2005-12-21 |
DE69832883T2 (de) | 2006-08-24 |
ATE313256T1 (de) | 2006-01-15 |
US6825395B1 (en) | 2004-11-30 |
AU7935598A (en) | 1999-02-10 |
CA2297105A1 (en) | 1999-01-28 |
DE69832883D1 (de) | 2006-01-26 |
EP1004238A1 (en) | 2000-05-31 |
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