WO2006040926A1 - 3倍体レシピエントを用いた生殖細胞移植による魚類の増殖方法 - Google Patents
3倍体レシピエントを用いた生殖細胞移植による魚類の増殖方法 Download PDFInfo
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- WO2006040926A1 WO2006040926A1 PCT/JP2005/017801 JP2005017801W WO2006040926A1 WO 2006040926 A1 WO2006040926 A1 WO 2006040926A1 JP 2005017801 W JP2005017801 W JP 2005017801W WO 2006040926 A1 WO2006040926 A1 WO 2006040926A1
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- fish
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- primordial germ
- triploid
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Classifications
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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
- 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
- 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
- A01K67/02—Breeding vertebrates
-
- 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
- A01K2227/40—Fish
Definitions
- the present invention relates to isolated primordial germ cells (2n) derived from donor fish,
- the present invention relates to a method for breeding fish.
- the present inventors have described a method for transplanting genetically modified or isolated cells into a host individual in fish and inducing the differentiation into the germ line (1)
- mice that are known to share the breeding cell line the cell population that maintains the undivided state is considered to be divided into germ cells by stimulation from surrounding cells.
- maternal factors such as RNA and proteins accumulated in the maturing eggs of the parent ovary play an important role in determining the germline.
- a germ cell stem cell that is, a primordial germ cell
- transplanting the primordial germ cell into an early embryo of a fish The cell can be induced to differentiate into the germline.
- a technique for producing triploids for breeding high-quality fish is known.
- the excellent trait is genetically fixed by selecting a perfect homozygote induced by chromosome manipulation, preferably by selecting individuals of the superior trait, preferably using a normal fish as a control group.
- a breeding method for Japanese flounder which is characterized by mating with a completely homozygous or normal fish and producing a breed with excellent traits (see, for example, Patent Document 2 and Patent Document 3). It is also known to produce both eggs by taking the placenta part of triploid crucian carp and transplanting it into a goldfish embryo to make a chimera.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-235558
- Patent Document 2 Japanese Patent Laid-Open No. 10-327706
- Patent Document 3 Japanese Unexamined Patent Publication No. 2000-135038
- Patent Document 1 Although the differentiation induction method described in Patent Document 1 is an extremely excellent method, when isolated primordial germ cells derived from donor fish are transplanted into early embryos of different recipient fish, the recipient fish is: Make donor-derived eggs and Z or sperm, and make recipient-derived eggs and Z or sperm. However, it may be necessary to specifically form donor-derived eggs and Z or sperm, such as when donor fish has higher added value than dissimilar recipient fish.
- An object of the present invention is to provide a method for inducing differentiation of an isolated primordial germ cell into a germ cell line by transplanting an isolated primordial propagation cell derived from a donor fish into an early embryo of a different recipient fish.
- Another object of the present invention is to provide a method for efficiently proliferating or breeding fish that specifically forms donor-derived eggs and Z or sperm without forming sperm.
- the present inventor has intensively researched and isolated source from donor fish.
- a triploid fish as a recipient fish different from the donor
- the method for inducing the separation of the isolated primordial germ cell into the germ line of transplanting germ cells into the early embryo of different recipient fish Find out that donor-derived ova and Z or sperm, which are almost never formed from recipient-derived ova and Z or sperm, are found to be specifically formed in females, especially donor-derived ova. It came to.
- the present invention relates to (1) a germ line of an isolated primordial germ cell, characterized in that the isolated primordial germ cell derived from a donor fish is transplanted into an early embryo of a different recipient fish (triploid).
- the method of inducing differentiation into (2), wherein the isolated primordial germ cell is a primordial germ cell isolated from an embryo before and after hatching The differentiation induction method and (3) transplantation of different recipient fish (triploid) to the early embryo is characterized by being transplanted to the backside of the abdominal mesentery of the host in the developmental stage before and after hatching (1) or (2) the method of inducing the separation of the isolated primordial germ cell into the germ line, or (4) the reproduction of the isolated primordial germ cell described in any of (1) to (3) above. It is characterized by the formation of eggs and Z or sperm from donor fish by the differentiation induction method to the cell lineage. It is related with the propagation method of fish.
- FIG. 1 -A diagram showing the results of an anatomical observation 18 months after transplantation of testes of a pea (triploid) recipient transplanted with primordial germ cells (diploid) of zimus .
- FIG. 2 is a diagram showing the results of anatomical observation 18 months after transplantation of ovary of a trout (triploid) recipient (3n recipient) transplanted with primordial germ cells (diploid) of zimus.
- the isolated primordial germ cells derived from a donor fish are transplanted into an early embryo of a different recipient fish (triploid).
- the method of growing the fish of the present invention is not particularly limited as long as it is a method, and is particularly limited as long as it is a method of forming eggs and Z or sperm derived from donor fish by the differentiation induction method of the present invention.
- fish that can be used for fish such as saltwater fish, freshwater fish, etc.
- examples of dissimilar fish include fish of the same genus and different genera. For example, when the donor is zimus, As brown trout The char can be specifically exemplified.
- transplantation of donor isolated primordial germ cells into the recipient's early embryo can be performed by transplanting the host recipient at the early developmental stage into the peritoneal cavity of the peritoneal mesentery.
- Donna When the isolated primordial germ cells are transplanted into the peritoneal cavity of a recipient (triploid) embryo by a method such as the microindication method, the transplanted primordial germ cells spontaneously enter the host gonad. And can induce proliferation and differentiation there.
- the primordial germ cells used for transplantation can use embryonic force separated before and after hatching, and transplantation into the early embryo of the host is a host recipient in the developmental stage before and after hatching. (Triploid) can be used.
- primordial germ cells of the donor are used for transplantation, it is preferable to obtain them by separating and purifying the cells. Since primordial germ cells in fish are a cell population that appears only at a limited stage of early development, for example, at a limited stage of early development before and after hatching, visualization is performed for acquisition, It is preferable to obtain such that separation and purification are possible.
- the method reported by the present inventors can be used for visualization of primordial germ cells. That is, for example, in order to visualize the primordial germ cells of fish, first, a gene specifically expressed in the germ cells of fish is obtained (Mol. Reprod. Develop. 55: 364-371, 2000) and its regulation is performed.
- vasa In fish, the vasa gene can be used. vasa is isolated as a causative gene of the F1 generation infertile in Drosophila (cannot get the F2 generation) and is said to have RNA helicase activity involved in translation of mRNA in germ cells. This gene is expressed specifically in primordial germ cells even in fish such as rainbow trout, and this gene is expressed in primordial germ cells. It can be used for visualization.
- a plasmid in which a marker gene that encodes a protein that can visualize primordial germ cells in vivo is incorporated into the cytoplasm of fertilized eggs of fish can be done by introducing wear.
- a gene encoding the fluorescent protein FP for example, a marker gene such as green fluorescent protein (GFP) or enhanced green fluorescent protein (EGFP) derived from jellyfish jellyfish can be used.
- primordial germ cells In order to separate the visualized primordial germ cells from germ cell tissues, known methods can be used as appropriate. For example, genital ridges containing embryonic embryonic primordial germ cells can be recovered, dissociated with proteolytic enzymes until disintegrated, and further applied to a cell sorter for separation. Primordial germ cells are fluorescently labeled by the expression of the marker gene, and therefore emit fluorescence, and the germ cells and fluorescence are easily separated from other somatic cells by a cell sorter. can do.
- primordial germ cells are transplanted to the back side of the peritoneal mesentery of the recipient (triploid) at an early stage of development by an appropriate method such as microinstruction.
- Primordial germ cells can spontaneously move into the host gonad, induce differentiation into oocytes or spermatogonia, and induce differentiation into eggs or sperm.
- the method of inducing separation of isolated primordial germ cells into the germ line of the present invention can be used for the production of new individuals, and can be used for the method of breeding donor fish.
- the method for producing a triploid recipient fish transplanted with isolated primordial germ cells derived from a donor fish is not particularly limited, as described in the Examples, usually the female affinity of diploid fish After artificial insemination using normal eggs and spermatozoa of normal diploid fish, the development begins under running water at 10 ° C.
- the second polar body release prevention method (method of blocking the second polar body release by pressure or temperature stimulation during the development process to make it a diploid) or the first cleavage prevention method (stage of development) In this method, the second polar body is released and the development begins only in the female pronucleus.
- a physico-stimulative stimulus is applied, and the first cleavage is made a diploid.
- a male sex hormone testosterone
- the triploid recipient is preferably a female in which a donor-derived ovum is specifically formed.
- the method for inducing differentiation is used for the formation of eggs and Z or sperm of different species of fish. This can be used for large-scale growth of fish and the like.
- the propagation method of the present invention since a triploid host is used as a recipient, almost no primordial germ cells are retained. By transplanting donor-derived primordial germ cells here, most of the egg spermatozoa derived from donor primordial germ cells occupy the recipient (triploid) host gonad.
- donor primordial germ cells are derived from very young embryos before and after hatching, their proliferation ability is extremely high, and their proliferation is extremely high even in heterologous triploid host individuals after transplantation. As soon as it is confirmed. Moreover, only sperm can be produced by spermatogonial cell transplantation, but since primordial germ cells are cells before sex separation, both egg and sperm can be formed. By the way, since the cryopreservation technology for eggs has not been completed in fish, the preservation and technology of gene primordials can be achieved by making eggs' sperm by transplantation after cryopreserving primordial germ cells.
- the preparation of the host trout was usually performed by artificial insemination using eggs from the diploid brute female parent and sperm from the diploid spruce male parent in the usual manner. Then, the development started under running water at 10 ° C, and after 15 minutes from fertilization, it was immersed in warm water at 28 ° C, and after that, when it became a normal egg under running water at 10 ° C, Individuals that reached the day were subjected to experiments as host trout (triploid). The triploidization rate of juveniles at the stage of reaching 35 days after fertilization was examined by microphotometry of the amount of DNA, which was 99.8%, and most juveniles became triploid. I'm stuck.
- the GFP gene derived from the jellyfish vasa gene was connected to the expression regulation region of the rainbow trout and visualized.
- the primordial germ cells (diploid) of rainbow trout were visualized in heterogeneous individuals. It was introduced into an early embryo of a host trout (triploid). Since the primordial germ cells into which this GFP gene has been introduced emits green fluorescence specifically, they can be visualized in living pea (triploid) individuals.
- primordial germ cells into the early embryo of a trout is as follows:-Embryos before and after hatching of zimus (when embryos are kept at a water temperature of 10 ° C, 30-30 days after fertilization, hatching after fertilization 32 From the day, about 10 primordial germ cells isolated by the method described above are aspirated with a glass micropipette attached to a microinjector, and the intraperitoneal cavity Transplanted to the back side of the mesentery.
- the host germline was observed with fluorescence over time after transplantation, and the proportion of germ cells derived from donors was investigated. On the 60th day after transplantation, it was observed that the transplanted primordial germ cells migrated to the genital ridge in the gonad, taken up into the genital ridge, and further proliferated.
- transplanted primordial germ cells efficiently proliferated in the host recipient gonad, and induced to differentiate into spermatogonia in the testis and to oocyte oocytes in the ovary. Since these oocytes and spermatogonia are divided into eggs or sperm in a trout (triploid) individual, it is possible to create a new-mass individual by using these germ cells. it can.
- -A corn (triploid) recipient transplanted with primordial germ cells (diploid) of zimus was subjected to anatomical observation of testis and ovary 18 months after transplantation.
- a control Transplanted with transplanted trout (triploid) recipients (triplet) that did not transplant at the same stage as transplant recipients (3n control) and -jimas primordial germ cells (diploid) 1 After 8 months, a bean (diploid) recipient (2n control) was used.
- Fig. 1 (Reference Photo 1) shows the anatomical results in the testis
- Fig. 2 (Reference Photo 2) shows the anatomical results in the ovaries.
- large coronalizations were found in the testicular (triploid) recipient testes.
- donor-derived eggs that have developed to the same extent as the bean (diploid) recipient (2n control) fill the ovary of the bean (triploid) recipient (3n recipient). It was.
- primordial germ cells from donor fish are used and transplanted into early embryos of different recipient fish (triploid), so that almost all recipient-derived eggs and Z or sperm are formed. Since donor-derived ova and Z or sperm, especially eggs, are almost exclusively formed in donors, for example, isolated primordial germ cells can be transformed into different strains or different host individuals. (Triploid) can be used as a borrower for fish and so on.
- primordial germ cells of a huge species such as tuna can be transplanted to small related species, Since fry from different strains and different host individuals are mostly mixed, it is possible to produce tuna-specific fry without the need to separate them.
- primordial germ cells of rare and endangered species are cryopreserved and transplanted to related species that are easy to breed when necessary, so that rare species and extinct species that are not mixed with eggs or sperm from related species It can be used to preserve endemic species-specific genetic resources.
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- Environmental Sciences (AREA)
- Animal Behavior & Ethology (AREA)
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- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
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- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
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JP2004296852A JP4581083B2 (ja) | 2004-10-08 | 2004-10-08 | 3倍体レシピエントを用いた生殖細胞移植による魚類の増殖方法 |
JP2004-296852 | 2004-10-08 |
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WO2006040926A1 true WO2006040926A1 (ja) | 2006-04-20 |
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PCT/JP2005/017801 WO2006040926A1 (ja) | 2004-10-08 | 2005-09-28 | 3倍体レシピエントを用いた生殖細胞移植による魚類の増殖方法 |
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JP (1) | JP4581083B2 (ja) |
WO (1) | WO2006040926A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2535404A1 (en) * | 2010-02-09 | 2012-12-19 | National University Corporation Hokkaido University | Method for acquiring genetically identical gamete from lethal fish haploid-derived germ cell via germ line chimera |
WO2015146184A1 (ja) * | 2014-03-26 | 2015-10-01 | 国立大学法人東京海洋大学 | 他属魚種代理親魚への適用が可能な、代理親魚を用いた養殖魚生産のための魚類配偶子の生産方法 |
WO2016153019A1 (ja) * | 2015-03-26 | 2016-09-29 | 国立大学法人東京海洋大学 | 移植魚の作出方法、移植魚、ハイブリッド魚種の作出方法及びハイブリッド魚種 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009118778A1 (ja) * | 2008-03-25 | 2009-10-01 | 国立大学法人東京海洋大学 | 魚類未成熟生殖細胞表面特異的タンパク質を利用した、魚類未成熟生殖細胞の分離方法 |
WO2013145703A1 (ja) * | 2012-03-27 | 2013-10-03 | 国立大学法人東京海洋大学 | 分離生殖細胞の宿主魚類生殖腺への生着率の向上 |
CN105475202B (zh) * | 2015-12-25 | 2018-07-24 | 武汉百瑞生物技术有限公司 | 一代育成全雌黄颡鱼的方法 |
CN105494205B (zh) * | 2015-12-25 | 2018-08-21 | 武汉百瑞生物技术有限公司 | 一种缩短鱼类性成熟周期的方法 |
WO2022211138A1 (ko) * | 2021-03-29 | 2022-10-06 | 주식회사 노아바이오텍 | 송어의 해수순치 과정에서 폐사율을 감소시키는 방법 |
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JP3635187B2 (ja) * | 1997-03-29 | 2005-04-06 | 鳥取県 | 完全同型接合体を利用したヒラメ類の育種方法、作出されたヒラメ類およびヒラメ類の増養殖方法 |
JP2000135038A (ja) * | 1997-03-29 | 2000-05-16 | Tottori Prefecture | 完全同型接合体を利用したヒラメ類の育種方法、作出されたヒラメ類およびヒラメ類の増養殖方法 |
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JP2003235558A (ja) * | 2002-02-14 | 2003-08-26 | Japan Science & Technology Corp | 分離始原生殖細胞の移植による生殖細胞系列への分化誘導法 |
Non-Patent Citations (2)
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2535404A1 (en) * | 2010-02-09 | 2012-12-19 | National University Corporation Hokkaido University | Method for acquiring genetically identical gamete from lethal fish haploid-derived germ cell via germ line chimera |
EP2535404A4 (en) * | 2010-02-09 | 2013-10-02 | Univ Hokkaido Nat Univ Corp | METHOD FOR OBTAINING GENETICALLY IDENTICAL GAMES FROM HAPLOID LONG FISH GERM CELLS USING GERMINAL LINEAR CHIMER |
US8921643B2 (en) | 2010-02-09 | 2014-12-30 | National University Corporation Hokkaido University | Method for acquiring genetically identical gamete from lethal fish haploid-derived germ cell via germ line chimera |
WO2015146184A1 (ja) * | 2014-03-26 | 2015-10-01 | 国立大学法人東京海洋大学 | 他属魚種代理親魚への適用が可能な、代理親魚を用いた養殖魚生産のための魚類配偶子の生産方法 |
JPWO2015146184A1 (ja) * | 2014-03-26 | 2017-04-13 | 国立大学法人東京海洋大学 | 他属魚種代理親魚への適用が可能な、代理親魚を用いた養殖魚生産のための魚類配偶子の生産方法 |
WO2016153019A1 (ja) * | 2015-03-26 | 2016-09-29 | 国立大学法人東京海洋大学 | 移植魚の作出方法、移植魚、ハイブリッド魚種の作出方法及びハイブリッド魚種 |
JPWO2016153019A1 (ja) * | 2015-03-26 | 2018-05-10 | 国立大学法人東京海洋大学 | 移植魚の作出方法、移植魚、ハイブリッド魚種の作出方法及びハイブリッド魚種 |
JP2021118712A (ja) * | 2015-03-26 | 2021-08-12 | 国立大学法人東京海洋大学 | 移植魚の作出方法、移植魚、ハイブリッド魚種の作出方法及びハイブリッド魚種 |
JP6999072B2 (ja) | 2015-03-26 | 2022-02-04 | 国立大学法人東京海洋大学 | 移植魚の作出方法、移植魚、ハイブリッド魚種の作出方法及びハイブリッド魚種 |
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