WO1997023129A1 - Modele animal transgenique destine aux maladies liees a l'interleukine-1 - Google Patents
Modele animal transgenique destine aux maladies liees a l'interleukine-1 Download PDFInfo
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- WO1997023129A1 WO1997023129A1 PCT/JP1996/003727 JP9603727W WO9723129A1 WO 1997023129 A1 WO1997023129 A1 WO 1997023129A1 JP 9603727 W JP9603727 W JP 9603727W WO 9723129 A1 WO9723129 A1 WO 9723129A1
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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
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- 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
- C07K14/52—Cytokines; Lymphokines; Interferons
- C07K14/54—Interleukins [IL]
- C07K14/545—IL-1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2217/00—Genetically modified animals
- A01K2217/05—Animals comprising random inserted nucleic acids (transgenic)
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2227/00—Animals characterised by species
- A01K2227/10—Mammal
- A01K2227/105—Murine
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2267/00—Animals characterised by purpose
- A01K2267/03—Animal model, e.g. for test or diseases
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K2267/00—Animals characterised by purpose
- A01K2267/03—Animal model, e.g. for test or diseases
- A01K2267/0306—Animal model for genetic diseases
- A01K2267/0325—Animal model for autoimmune diseases
-
- 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
- A01K2267/035—Animal model for multifactorial diseases
- A01K2267/0368—Animal model for inflammation
Definitions
- the present invention relates to an interleukin 1-related disease model non-human spinal transgenic animal into which a foreign gene construct containing an interleukin 1 â (Interleukin 1 â : abbreviated as IL-lot) gene has been incorporated.
- an interleukin-1-related disease model non-human vertebra into which an exogenous gene construct encoding a cytomegalovirus enhancer non-receptor actin promoter region and human IL-11 â has been incorporated.
- IL-1 â Interleukin 1 â : abbreviated as IL-lot
- Interleukin-1 (abbreviated as IL-1) has various activities on a very large number of cells, and is important in various reactions including the homeostasis of living organisms in addition to the acute inflammatory response. Has been shown to play a role (Oppenheim, JJ et al., Immunol Today vol. 7, p. 45-56, 1986) o
- IL-11 is a simple protein with about 250 amino acids, a molecular weight of 17.5 kD and no sugar. Since IL-11, like other secreted proteins, lacks a signal peptide, its mechanism of extracellular release has not been fully elucidated. It has been clarified that IL-11 has two molecular species in all animal species, and it is classified into â type and 3 type.
- the â -form is thought to be cleaved off at the â -terminal by a calcium-dependent protease when passing through the cell membrane (Kobayashi, Y. et al., Proc Natl Acad Sci USA, vol. 87, p. 5548-5552, 1990).
- the homology in the amino acid sequence between IL-1 and IL-11 is only about 25%, but the homology between IL-11 of the same type is as high as 60-70% even if the animal species is different.
- IL-1 â and IL-1 / 3 bind to the same receptor and show almost the same biological activity.
- IL-1 is expressed by monocytes, macrophages and their related cells (Langerhans cells, etc.) by bacteria, endotoxin (LPS), complement-binding immune complex, complement components (C3a, C5a), It is produced by various stimuli such as one-fluorocarbon (IFN), tumor necrosis factor (TNF), colony-stimulating factor (CSF), transforming growth factor- â (TGF-) 3), and viruses.
- IFN one-fluorocarbon
- TNF tumor necrosis factor
- CSF colony-stimulating factor
- TGF- transforming growth factor- â
- keratinocytes, NK cells, T cells, B cells, vascular endothelial cells, mesangiura cells, synovial cells, and astroglial (astroglial neutrophils, fibroblasts) are also IL-11. Therefore, an extremely large number of cells produce IL-11, and the IL-11 producing cells differ between inflammation and non-inflammation.
- a method for introducing a foreign gene into an egg includes a microinjection method in which a foreign gene is inhaled into a micropipette and injected into the pronucleus of a one-cell stage egg (Gordon et al., 1980)
- a method of infecting through a virus and an egg incorporating an exogenous gene is called a transformed egg (Gordon J. et al .. Proc Natl Acad Sci USA 77, 7380). Jaenisch R.
- Transgene By selecting various promoter regions and combining them with a transgene, it is possible to express a transgene specific to each stage from a fertilized egg to an adult. As a result of the expression, a protein encoded by the transgene is produced in the transgenic animal. In particular, if the protein performs an important function in an animal, it may at some point during the development of the individual cause some change in the phenotype of the individual, causing a trait resembling a human epidemic. It is also possible to obtain. Whether a transgenic animal has incorporated the transgene into its chromosome can be confirmed by analysis such as the PCR method and the Southern blot method. If this incorporation is confirmed, this animal is used for gene expression analysis in vivo, for example, analysis by Northern blot method, immunological antibody method and the like.
- a promoter is a signal on DNA that initiates mRNA synthesis (transcription) into a type II DNA, and has a characteristic base sequence. The action of RNA polymerase initiates mRNA synthesis of the target protein. .
- enhancer By incorporating a special DNA base sequence called enhancer, which enhances the transcription efficiency of DNA, further upstream of this promoter region, the production efficiency of the target protein can be further increased.
- transgenic animals include: 1) individual-level analysis of gene expression during development, 2) It can also be used in fields such as research for overcoming or reducing genetic diseases.
- transgenic mice incorporating various cytokine genes have been produced. For example, transgenic mice expressing human IL-12 in the thymus, spleen, bone marrow, lung, skin, etc., develop alopecia and pneumonia at a high rate, but have almost all autoimmune disease-like conditions. Not reported (Ishida Y.
- transgenic mice bearing human IL-4 show altered T cell development and altered immune responses associated with immunoglobulin-isotype dysregulation and decreased osteoblast and osteoclast activity in bone tissue. It is known to cause associated osteoporosis (Tepper RI et al., Cell 62. 457-467, 1990; Lewis DB et al., J Exp Med 173, 89-100, 1991; Muller W. et al. , Eur J Immunol 22, 1179-1184, 1992; Lewis DB et al., Proc Natl Acad Sci USA 90, 11618-11622, 1993).
- Transgenic mice have also been produced in mouse IL-15, and overexpression of mouse IL-15 causes eosinophilia and autoantibody production (Dent LA et al., J Exp Med 172, 1425-1431, 1990; Toniinaga A. et al., J Exp Med 173, 429-437. 1991).
- transgenic mice transfected with human IL-6 cause autoimmune diseases and plasmacytomas (Suematsu S. et al., Proc Natl Acad Sci USA 86, 7547-7551, 1989; Suematsu S. et al. , Pro Natl Acad Sci USA 89, 232-235, 1992).
- IL-7, human IL-8 and human GM-CSF were observed in transgenic mice.
- Simonet f. S. et al., J Cl in Invest 94, 1310-1319, 1994; Lang RA et al. , Cell 51, 675-686, 1987
- transgenic mice overexpressing any of the cytodynamics exhibit abnormalities caused by changes in the phenotype of immunocompetent cells.
- transgene I It is a lethal experiment in which nick mice are also being produced, and there is no report that it has occurred in adults (Csaikl FF et al., Overexpression and Knockout of Cytokines in Transgenic Mice, Jacob CO (ed), 1-13, 1994).
- HTLV-lpx is known as a transgenic mouse that develops arthritis (Iwakura Y. et al., Science 253, 1026-1028, 1991). Chronic arthritis seen in adult T-cell leukemia (ATL) patients is caused by the virus HTLV-1 LTR-env-! It is reproduced in transgenic mice into which the x region or tax gene has been introduced, and is considered to be useful as a pathological model for rheumatoid arthritis. Although it is suggested that the expression of the tax gene at the joint site in HTLV-1p X mice induces the expression of inflammatory cytokines, in fact, IL-11 â , IL-1) 9 and IL- It has been confirmed that the expression of 6 mag is enhanced.
- HLA-B27 a major histocompatibility antigen gene associated with spondyloarthropathy, known as a multi-organ disease
- 52 Transgenic rat with microglobulin gene introduced, peripheral and spinal arthritis, skin It causes inflammation, gastrointestinal inflammation and myocarditis, and is considered as a model of B27-related human disease.
- the present invention succeeded for the first time in the creation and strain (line) of a transgenic mouse overexpressing IL-1 that is closer to the pathology of human rheumatoid arthritis and completed the present invention. did.
- An object of the present invention is to provide a more useful chronic rheumatoid arthritis model by overexpressing IL-11 in joints, Is to clarify. More specifically, the present invention not only induces arthritis by overexpressing IL-11 in an animal body, but also broadly acts on the whole body to cause diseases caused by overexpression, such as autoimmune disease. It is intended to create a transgenic animal, preferably a transgenic nick mouse, which can be used as a model for diseases, collagen diseases, osteoporosis, and the like, using developmental engineering and genetic techniques.
- a gene fragment encoding human IL-11 is microinjected into the pronucleus of a non-human vertebrate, preferably a one-cell stage egg of a mouse, and the injected egg is then transplanted into a pseudopregnant female mouse.
- Rearing mice produces transgenic mice.
- This transgenic mouse is considered to develop systemic lupus erythematosus (SLE), rheumatoid arthritis, osteoporosis, etc., with overexpression of IL-1.
- SLE systemic lupus erythematosus
- the injected gene fragment contains a promoter that causes IL-1 to be expressed non-specifically in various types of cells in transgenic mice.
- Overexpression of IL-11 in immunocompetent cells, synovial cells, etc. under the control of this promoter alters the activity (phenotype) of these cells, and the occurrence of arthritis is observed at a high rate. Can be considered.
- the present invention relates to an IL-11-related disease model non-human spinal transgenic animal into which an exogenous gene construct containing an IL-11 â gene has been incorporated.
- the present invention incorporates an exogenous gene construct containing an IL-11 â gene downstream of the DNA sequence of the DN sequence of the cytomegalovirus enhancer and the DNA sequence of the nitrile actin promoter.
- An important aspect of the present invention is that IL-11 can be overexpressed in any type of tissue under the control of a strong promoter. That is, the function of IL-11 in vivo is widespread in addition to immune-related tissues, and the mechanism of action of IL-1 in these tissues is almost unknown.
- the recombinant gene is composed of a chicken megatactin promoter, which initiates transcription in all somatic cells without limitation, and a cytomegalovirus enhancer, which has the function of strongly enhancing its transcription efficiency.
- the present invention relates to an IL_1-related disease model non-human spinal transgenic animal, wherein the IL-11 gene is derived from human.
- the present invention is further characterized in that the IL-1-related disease model non-human spinal transgenic animal is a mouse.
- the present invention relates to an IL-11-related disease model non-human spinal transgenic animal in which the IL-11-related disease is a chronic inflammatory disease.
- the present invention relates to an IL-11-related disease model non-human spinal transgenic animal in which the IL-11-related disease is rheumatoid arthritis.
- the present invention relates to an IL-11-related disease model non-human spinal transgenic animal in which the IL-11-related disease is systemic lupus erythematosus.
- the present invention relates to an IL-11-related disease model non-human spinal transgenic animal in which the IL-11-related disease is osteoporosis.
- the IL-11-related disease model non-human spinal transgenic animal of the present invention can be used for joint swelling, lymphocyte infiltration into joints, proliferation of synovial cells, cartilage, and bone destruction in limb joints due to enhanced immune response. It exhibits autoantibody production, vascular endothelial cell damage and osteoporosis.
- This transgenic animal has been shown to exhibit a rheumatoid arthritis-like pathology due to overexpression of IL-11, and therefore, the present invention relates to rheumatoid arthritis caused by overexpression of IL-11 in local joints. It provides a useful line for studying the onset mechanism and the like in vivo.
- osteoporosis is a phenomenon in which bone resorption exceeds bone formation, resulting in a decrease in bone tissue and symptoms such as lumbar back pain and fractures.
- IL-1 produced by monocytes from osteoporosis patients Due to the large amount and IL-11 has a strong bone resorption promoting effect, overexpression of IL-11 may cause Be expected.
- SLE is a disease in which the immune control mechanism is abnormal. Increased autoantibody production due to increased B cell function is observed, and complement-dependent tissue damage is caused by the formed immune complex. It is known that such immunological abnormalities are caused by abnormal production or reactivity of cytokines such as IL-1.
- Lyme disease has also been implicated in IL-11. That is, Lyme disease is a tick-borne disease and the pathogen is spirochetes. It develops with characteristic skin lesions and then progresses to chronic arthritis.
- IL-1 has been shown to be derived from monocytes by spiro-heterogen (Habicht, G. S. et al., J. Iraraunol., 134, 3147. 1985).
- IL_1 is overexpressed almost entirely in the whole body, it can be used for elucidating the pathogenesis of diseases considered to be caused by overexpression of 1-1 and for searching for therapeutic agents.
- the agent to be searched is administered simultaneously to a control animal, ie, a transgenic mouse of the invention, a group of animals (such as a non-transgenic mouse) and a transgenic mouse of the invention.
- the agent will be administered continuously for a period sufficient to allow the condition of the transgenic mouse to be ameliorated.
- the transgenic mice and the control non-transgenic mice will be subjected to analysis of joint tissues and the like.
- the present invention relates to an IL-1-related disease model transgenic mouse, which is iSAIL-1 â -1705 or 3AIL-1.
- the present inventors created transgenic mice showing the above-mentioned IL-11-related diseases by overexpressing the IL-11 â gene in the whole body.
- This mouse shows autoantibody production, neutrophil proliferation, arthritis and hyperactivity of immunocompetent cells. These conditions are similar to those described above. Obedience
- this mouse can not only elucidate the in vivo effects of IL-11, but also elucidate the pathogenesis of various IL-1-related diseases caused by overexpression of IL-11 and develop therapeutic drugs for these diseases. It provides a line for in vivo screening.
- transgenic animals of the present invention maintain their lines by in vitro fertilization, born transgenic animals can be bred in the same manner as normal animals and do not require special breeding and feeding.
- An object of the present invention is to provide a transgenic animal having a DNA sequence necessary for strongly expressing IL-11 in joint tissues and other tissues, that is, a so-called recombinant DNA. Further, the usefulness of the present invention is that the transgenic animal can be used to elucidate the in vivo action of IL-1; elucidate the pathogenesis of the above-mentioned IL-11-related diseases; It is used for in vivo screening.
- FIG. 1 shows the DNA sequence of the cytomegalovirus enhancer DNA and the DNA sequence encoding the IL-11 gene downstream of the DNA sequence of the nitrite actin promoter.
- FIG. 1 is a view showing a plasmid map of a gene-containing plasmid pSAZhIL-1-1.
- FIG. 2 is a micrograph of a specimen obtained by staining the calvaria of a 4-week-old / SAIL-1 â -1705 F0 mouse ( â ) and a non-transgenic mouse ( â ) with hematoxylin-eosin staining.
- Figure 3 shows micrographs of the femurs of the 4-week-old yS AI L-1 «-1705 F0 mouse (A) and the nontransgenic mouse (B) stained with hematoxylin and eosin staining. It is.
- Figure 4 shows the appearance of spleen cells stained by FITC staining of i8 AIL-1 â -1705 F0 mice ( â ) and non-transgenic mice (B) at 4 weeks of age. It is a microscopic photograph.
- Fig. 5 shows (A) 5 weeks old â AIL-1 â -1705 transgenic mouse (right end), SAIL-1 â -1706 transgenic mouse (middle) and non-transgeneic littermate ( â ) / SA IL-1 â -1705 Transgenic mice: hind limbs with swollen surrounding joints (right) and hind limbs of non-transgenic X nick mice (left) It is a photo.
- C shows a morphological picture C of the whole body of a 9-year-old F1 transgenic mouse (SAIL-1-1 «-1705-2) obtained by in vitro fertilization.
- the target gene to be expressed in the mouse was prepared as follows.
- a vector for expressing the target gene was prepared. 2.3 kb from pCAGGS (Niwa H. et al., Gene, vol. 108, p. 193-200, 1991), a mammalian expression vector having a tribeta-actin promoter and a cytomegalovirus Schenhanser upstream thereof The fragment was cut out by digestion with Sa1I / PstI, and this fragment was inserted into the Sa1IZPstI site of a cloning vector pBluescript (purchased from Stratagene) to construct a pBsCAG-2 vector. .
- the cytomegalovirus enhancer promoter has been found to be active in a wide variety of mammalian cells, and is currently a promoter that strongly promotes exogenous gene expression in vivo. It has been found useful as a system.
- This The 2.3 kb fragment contains a part of the Escherichia beta-globin gene (consisting of the second intron, the third exon, and the 3 'untranslated region) in addition to the enhancer promoter.
- a gene to be expressed such as cDNA, is inserted into the Ec0RI site of the third exon of the â sherita vogue oral gene.
- a gene was isolated from these recombinant gene constructs by digestion with ScaI / Sa1I / BamHI, and used to construct this construct. For example, DNA digestion and ligation, isolation of DNA fragments, etc. were performed in order to achieve this, using the standard method of Maniatis T. et al. (Molecular Cloning, A Laboratory Manual, 1982). DNA recombination techniques were used. The DNA sequence around the junction of the insert was confirmed by the DNA sequencing method.
- Example 2 Injection of exogenous gene (3A-hIL-1 â ) into a mouse fertilized egg, transplantation of the fertilized egg, and confirmation of the introduced transgene.
- B LZ6N male and â 6 C 3 F 1 female mice (C57B LZ6 â XC 3 H / He) and ICR female mice were used as recipient females (recipients) for the transfer of fertilized eggs after DNA injection. .
- recipient females recipient females for the transfer of fertilized eggs after DNA injection.
- male mice with vasectomized ICR were crossed with the recipients.
- the plasmid p â a / hl L- 1 â was prepared by the method described above - a large amount of the 1 in a host E. coli After amplification, it was extracted. Further, in order to purify the plasmid, ultracentrifugation with cesium chloride, removal of ethidium bromide, and dialysis treatment were performed.
- the purified plasmid is digested with the restriction enzymes Sal I, BamHI and Seal, and then subjected to 0.8% agarose gel electrophoresis to obtain the desired foreign gene ( â Aâh â L- â a, 3.0 kb) was isolated.
- the exogenous gene used was diluted with phosphate buffer (pH 7.2) immediately before the injection operation. This exogenous gene was injected into fertilized eggs according to a previous report (Hogan B. et al., In Manipulating the Mouse Embryo., Cold Spring Harbor Laboratory Press, 1986).
- the male pronucleus of the fertilized egg is added about 2 p1 (2,000 copies) of the DNA solution using a fine glass pipette for injection. Injected into.
- the fertilized eggs were mated with mature ICR male mice whose vas deferens were cut. Pseudopregnancy was transplanted into the oviduct of the first mature ICR female mouse. After the fallopian tube transplantation, they were reared until term of delivery, and pups were obtained. After parturition, the obtained offspring were weaned at the age of 4 weeks after birth, and about lcm of the tail part of this mouse was cut under anesthesia and punched into the ear, and the individual was identified. After extracting and purifying chromosomal DNA from the tail tissue, it was confirmed that the gene fragment introduced by the Southern blot method was integrated into the mouse chromosome.
- TYH broth TYH culture NaCl 0.6976G ultrapure water 100ml, KCl 0.0356 g> CaCl 2 -2H 2 0 0.0251 g, KH 2 P0 4 0.0162g, MgS0 4 -7H 2 0 0.0293g, NaHC0 3 0.2106 g, sodium pyruvate 0.011 g, glucose 0.1 lg, â serum albumin 0.4 g, â nisiliin G 0.0075 g, streptomycin 0.005 g, and phenol red 0.0002 g. After lysis, this culture is disinfected through a Millipore filter and used for experiments References: Toyoda, Y., Yokoyama, H.
- the introduced epididymis was minced with ophthalmic scissors to collect sperm.
- the obtained transgenic mouse-derived spermatozoa are cultured for 1 hour, and then sperm suspension is placed in a 400 TYH culture medium containing unfertilized eggs previously collected from B6C3F1 female mice. / 1 was added. In this state, the cells were cultured at 37 ° C. for 24 hours in a gas phase of 5% CO 2 and 95% air.
- transgenic mice (F 1) were included, respectively. All F1 transgenic mice with AIL-1a-1705 showed a phenotype similar to that of F0, with growth retardation and arthritis, but the degree of abnormality was less than that of F0. It was remarkable. On the other hand, F1 transgenic mice of 3AIL-1 and 1706 had slightly less abnormalities than F0. That is, in F1, the onset of arthritis tended to be delayed.
- transgene-derived mRNA was confirmed by the Northern blot method in all 9 transgenic lines of IL-11a and in all F0 mice.
- Total RNA was isolated from the brain, liver, stomach, small intestine, testis, skeletal muscle, skin and tibia of transgenic F0 mice and their non-transgenic mice.
- 20 g of total RNA was subjected to 1.1% agarose / 1.1 M formaldehyde gel electrophoresis, and then transferred to a nylon membrane filter.
- a randomly primed cDNA probe human IL-1 â gene fragment
- Washing was performed in 0.1 â SS CZ0.1% SDS at 56 ° C. for 20 minutes.
- the filter was exposed at 80 ° C for 24 to 72 hours ( â screen + Kodak XAR-5 film).
- Northern blot analysis was performed on the above main organs of 9 lines of F 0 transgenic mice. Except for the SA IL-1 â -1705 and / SA IL-1 «-1706 lines, no IL-11 â expression was observed in any of the lines.
- the AIL-1 â -1705 line showed strong expression of IL-11 in kidney, small intestine, skin and tibia, but weak expression in brain, liver and skeletal muscle. In testis, almost no expression was observed.
- the expression tended to be weaker than the expression of / SAIL-1 â -1705 as a whole, but strong expression was observed only in skeletal muscle. There was relatively weak expression in brain, liver, kidney, small intestine, skin and tibia, and almost no expression in testis.
- the analysis was performed on â AIL-1Hi-1705 and / SAIL-1 â -1706F0 mice, but the results and figures shown below show that the two lines show almost the same pathology. The explanation is limited to the findings of â AI L-la-1705 F0 mouse.
- Example 4 Pathological analysis of each organ of transgenic mice 4 weeks old / SAIL-1 â -1705 F0 mice were deeply anesthetized with sodium pentobarbitalate, and sacrificed by collecting whole blood from the heart. Thereafter, the brain, liver, kidney, thymus, spleen, spleen, lung, heart, testis, small intestine, large intestine, calvaria, dermis, femur (knee joint), and eyeball were isolated. After fixing these tissues with 10% formalin buffer, they were embedded in paraffin to prepare serial slices of about 2 mm. The bone tissue was decalcified by immersing it in 14% EDTA for about 1 week before preparing the sliced specimen.
- Hematoxylin-eosin staining was performed on these specimens. The stained specimens were observed under a light microscope for abnormalities, and some of the specimens were photographed ( Figures 2 and 3). The analysis of the results of hematoxylin-eosin staining is shown below. In the thymus histopathology, cortical atrophy was observed in the thymus of the transgenic mice as compared to the thymus of the non-transgenic mice.
- the spleen of transgenic mice showed increased neutrophils, enhanced extramedullary hematopoiesis, and a slight increase in plasmacytoid cells, but the spleen of non-transgenic mice Did not find such a change.
- the lungs of the transgenic mice showed insufficient alveolar expansion, thickened alveolar walls, and neutrophil infiltration. However, no abnormalities were observed in the lungs of non-transgenic mice.
- FIG. 3A shows marked increases in myeloid cells (arrow BMC), bone trabecular resorption images of osteoclasts (arrow Rs), and fibrous tissue (arrows) associated with osteochondral destruction.
- the corneal epithelium was thickened, which is thought to be due to the addition of stratified squamous epithelial cells. Infiltration of granulocyte cells was not observed. Such abnormalities were not observed in the eyes of non-transgenic mice.
- IL-11 not only acts as an endogenous pyrogenic factor, an inducer of leukocytosis and acute phase protein, a lymphocyte activator and a B cell activator, but also acts on a very large number of cells.
- it has been shown to have various activities, and to play an important role in various reactions including homeostasis in addition to acute inflammation.
- attention has been paid to the relationship between IL-11 and chronic inflammation-type diseases.
- a characteristic histopathological change in this mouse is the image of granuloproliferative inflammation showing marked inflammatory changes in the joints. Changes considered to be so-called arthritis were observed, such as articular cartilage, rupture of fibrous tissue of bone tissue, partial pannus formation, and synovial cell proliferation.
- Example 5 Confirmation of the ability of spleen cells derived from transgenic mice to produce cytokines by mitogen stimulation Using spleen cells of transgenic mice, changes in the phenotype of immunocompetent cells due to overexpression of IL_1 were observed.
- the spleen extracted from the Transgenic X nick mouse was converted into single cells using a glass homogenizer. Next, the erythrocytes were lysed with a Tris buffer (0.75% NH 4 C, 5.6 mM Tris-HC1, pH 7.65), and the remaining red blood cells destroyed with a cell strainer (Falcon 2350) were removed. Isolated spleen cells to a concentration of 5 X 1 O e / ml, hand prepared RPM I 1640 containing 10% FCS, which was used as spleen cells suspension â . Cancanavalin A (Con A; EY Labs.
- spleen cell suspension was added to a concentration of 2 â g / mU 5 â gZml.
- Anti-mouse CD3 antibody (BMY) was diluted with PBS to a concentration of 5 gZml, added to each well of a 24-well culture plate at 250 per well, incubated at room temperature for 2 hours, and the wells were removed. Washed with RPMI 1640 containing 2% FCS. In each case above, the spleen cell suspension was added lral per well of a 24-well plate. Thereafter, 37 ° C, 5% C0 2 in the 2 â cultured cell suspension incubator 8, 00 Or.
- Cytokines contained in the spleen cell suspension supernatant (mouse IL-2, mouse IL-4, mouse IL-16, INF-r: Biosource International Mouse IL-1; mouse TNF â : Genzyme, human Quantification of IL-11 â : R & D systems Inc.) was performed using a commercially available ELISA kit with an absorbance (OD) of 45 Ornn, and the procedure was performed according to the protocol.
- Table 4 shows the results of cytokine production of spleen cells derived from transgenic mice by mitogen stimulation.
- Mitidin is a substance that activates lymphocytes and induces cell division.
- Typical examples include plant-derived lectins such as CPHA (phytohemagglutin A :) and C on A), or bacterial LPS.
- CPHA phytohemagglutin A :
- C on A a substance that activates lymphocytes and induces cell division.
- bacterial LPS bacterial LPS.
- PHA, C on A, etc., T cells, LPS, etc. Is known to stimulate B cells.
- Spleen cells derived from transgenic mice spontaneously produce human IL-1 â even in the absence of mitogen stimulation, and when stimulated with various mitogens, spleen cells are totally non-transgenic. Cytokine production tended to be higher than that of spleen cells derived from nick mice except for IL-4.
- ConA concanapalin A
- the production of IL-2, IFNa, IL-6 and human IL-11 â is enhanced, but IL-2 â is particularly increased. â 2 was markedly enhanced.
- Example 6 Detection of Antinuclear Antibodies Using Transgenic Mouse Spleen Cells
- An antinuclear antibody is an antibody that can be detected in the blood of a patient with an autoimmune disease and has a cell nucleus component as an antigen. It is frequently detected in the blood of SLE patients, and is also found in rheumatoid arthritis, scleroderma, and thymoma.
- FIG. 4 shows a photograph of spleen cells derived from a transgenic mouse in which an antinuclear antibody stained by FITC staining is present.
- the spleen cells of the transgenic mouse (FIG. 4A) were clearly stained throughout the cytoplasm, confirming the presence of antinuclear antibodies.
- spleen cells from non-transgenic mice (FIG. 4B) were slightly stained. However, the staining is clearly weaker than that of spleen cells from transgenic mice. The staining of non-transgenic mouse spleen cells was considered non-specific.
- FIG. 5 shows an overall photograph of the transgenic mouse.
- Figure 5A shows 5 weeks old 3 AI L-l-1705 transgenic mice (right end), AIL-la-1706 transgenic mice (center), and littermate non-transgenic mice (right). This is a full-length photograph (left end of the photo).
- the two transgenic mice are clearly smaller and weigh about half that of the non-transgenic mice, compared to the non-transgenic mice. It can also be seen that the tails of these two transgenic mice are curved.
- the area around the forelimb joints of 5 weeks old transgenic mice (/ SA IL-1Hi-1705) was swollen compared to non-transgenic mice o
- FIG. 5B shows a photograph of the hind limb of the transgenic mouse (/ 3A IL-1-1-1705) in which the area around the joint has swollen.
- the hind legs of the transgenic mouse (right) are clearly swollen compared to the hind legs of the non-transgenic mouse (left).
- Fig. 5C shows a whole photograph of a 9-year-old F1 transgenic mouse (/ SAIL-la-1705-2) obtained by in vitro fertilization. At this time, significant swelling has already been observed around the joints of the front and rear limbs.
- the transgenic animal of the present invention develops rheumatoid arthritis as a result of enhancing the activities of immunocompetent cells and synovial cells in joints due to overexpression of human IL-11a in the whole body. Its pathology includes chronic disease in humans. It is very similar to rheumatoid arthritis and can be a useful model for the above-mentioned diseases, and is therefore useful for drug development.
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Description
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LPS 0.122 0.052 0.055 2.2 0.968 0.464 ã.093
Collagen-Î 0.119 0.057 0.064 0.831 1.231 0.287 0.989 iion-Tg non 0.153 0.091 0.052 0.098 0.097 0.114 n.d.
ConA 0.176 0.109 1.56 0.755 0.793 0.346 n.d. CD3 0.377 0.081 2.04 0.935 0.994 0.255 n.d. LPS 0.132 0.078 0.057 0.764 0.329 0.397 n.d.
Collagen-Î 0.111 0.08 0.064 0.205 0.333 0.392 n.d. DBA OTA non 0.12 0.109 0.068 0.095 0.163 0.1 12 n.d.
ConA 0.131 0.46 1.516 0.485 0.965 0.267 n.d. CD3 0.244 1.176 1.787 0.652 1.346 0.27 n.d. LPS 0.112 0.042 0.055 0.803 0.392 0.473 n.d.
Collagen-II 0.115 0.089 0.071 0.283 0.437 0.435 n.d. DBAl:RA non 0.117 0.135 0.08 0.196 0.311 0.16 n.d.
ConA 0.124 0.947 1.416 0.608 0.922 0.223 n.d. CD3 0.227 1.273 1.686 0.55 1.012 0.297 n.d. LPS 0.118 0.04 0.095 1.417 0.765 0.54 n.d.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96942593A EP0908093A4 (en) | 1995-12-22 | 1996-12-20 | TRANSGENIC ANIMAL MODEL FOR INTERLEUKIN-1 RELEVANT DISEASES |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7349444A JPH09172908A (ja) | 1995-12-22 | 1995-12-22 | ã€ã³ã¿ãŒãã€ãã³ïŒé¢é£çŸæ£ã¢ãã«ãã©ã³ã¹ãžã§ããã¯åç© |
JP7/349444 | 1995-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997023129A1 true WO1997023129A1 (fr) | 1997-07-03 |
Family
ID=18403798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/003727 WO1997023129A1 (fr) | 1995-12-22 | 1996-12-20 | Modele animal transgenique destine aux maladies liees a l'interleukine-1 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0908093A4 (ja) |
JP (1) | JPH09172908A (ja) |
WO (1) | WO1997023129A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002067668A1 (fr) * | 2001-02-27 | 2002-09-06 | Japan, Represented By The President Of Niigata University | Animal modele atteint d'une maladie mentale de type schizophrenie, methode d'obtention dudit modele et utilisation |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002084923A (ja) * | 2000-03-23 | 2002-03-26 | Japan Science & Technology Corp | ãã¹ã¿ãã³é«ç£çåç© |
US7214494B2 (en) | 2000-07-28 | 2007-05-08 | Toshio Hirano | Method of screening for substance preventing or treating diseases in association with malfunction of IL-6 family cytokine receptor malfunction |
WO2021204166A1 (en) * | 2020-04-07 | 2021-10-14 | Biocytogen Pharmaceuticals (Beijing) Co., Ltd. | Genetically modified non-human animal with human or chimeric il1b and/or il1a |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4816436A (en) * | 1986-10-29 | 1989-03-28 | Immunex Corporation | Anti-arthritic use of interleukin-1 proteins |
-
1995
- 1995-12-22 JP JP7349444A patent/JPH09172908A/ja active Pending
-
1996
- 1996-12-20 EP EP96942593A patent/EP0908093A4/en not_active Withdrawn
- 1996-12-20 WO PCT/JP1996/003727 patent/WO1997023129A1/ja not_active Application Discontinuation
Non-Patent Citations (5)
Title |
---|
BIOCHEM. BIOPHYS. RES. COMM., Vol. 206, HONDA H. et al., p. 287-293 (1995). * |
IMMUNOL. TODAY, Vol. 7, OPPENHEIM J.J. et al., p. 45-56 (1986). * |
J. CLIN. INVEST. Vol. 95, MARBER M.S. et al., p. 1446-1456 (1995). * |
PROC. NATL. ACAD. SCI. U.S.A., Vol. 92, GROVES R.W. et al., p. 11874-11878 (1995). * |
See also references of EP0908093A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002067668A1 (fr) * | 2001-02-27 | 2002-09-06 | Japan, Represented By The President Of Niigata University | Animal modele atteint d'une maladie mentale de type schizophrenie, methode d'obtention dudit modele et utilisation |
Also Published As
Publication number | Publication date |
---|---|
EP0908093A1 (en) | 1999-04-14 |
EP0908093A4 (en) | 2000-12-13 |
JPH09172908A (ja) | 1997-07-08 |
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