JP5542928B2 - ミミズの生殖巣再生能力を利用した形質転換ミミズの作製方法、これにより作製された形質転換ミミズ、及び形質転換ミミズの体液から組換たんぱく質の生産方法 - Google Patents
ミミズの生殖巣再生能力を利用した形質転換ミミズの作製方法、これにより作製された形質転換ミミズ、及び形質転換ミミズの体液から組換たんぱく質の生産方法 Download PDFInfo
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- 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
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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
- A01K67/033—Rearing or breeding invertebrates; New breeds of invertebrates
- A01K67/0333—Genetically modified invertebrates, e.g. transgenic, polyploid
- A01K67/0335—Genetically modified worms
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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
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- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
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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
- A01K2227/70—Invertebrates
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Description
1)ミミズの生殖巣を含む前半部を切断した後、再生を誘導して再生芽細胞を形成する段階、
2)CMVプロモーターを含む遺伝子発現系であるpCMV_EGFP−C1ベクターに標的遺伝子を導入して組換遺伝子発現ベクターを作製する段階、及び
3)前記1)段階で切断した後、24時間以内に再生が始まったミミズの再生芽細胞部位に、前記2)段階で作製した組換遺伝子発現ベクターを注入し、代を次いで培養して形質転換されたミミズを作製する段階を含む、ミミズの生殖巣再生能力を利用した形質転換ミミズの作製方法を提供する。
1)前記形質転換ミミズからミミズの体液を得る段階、
2)前記1)段階から得たミミズの体液に溶解緩衝液(lysis buffer)を入れて攪拌機で均質粉砕して均質液を得る段階、
3)前記均質液を遠心分離し沈殿を通じて組換たんぱく質を収得する段階、及び
4)前記収得された組換たんぱく質を精製及び分離する段階を含む、組換たんぱく質の生産方法を提供しようとする。
実施例2:標的遺伝子のクローニング、及び組換遺伝子発現ベクターの作製
実施例3:形質転換されたミミズ(Pex−hEPO,Pex−hGH)の作製及び発現確認
実施例4:発現された組換たんぱく質(EPO)の生物活性の検証
Claims (10)
- 1)ミミズの生殖巣を含む前半部を切断した後、再生を誘導して再生芽細胞を形成する段階、2)CMVプロモーターを含む遺伝子発現系('CMV promotor' gene expression system)に標的遺伝子を導入して組換遺伝子発現ベクターを作製する段階、3)前記1)段階で切断した後、24時間以内に再生が始まったミミズの再生芽細胞部位に前記2)段階で作製した組換遺伝子発現ベクターを注入し、代を次いで培養して形質転換されたミミズを作製する段階、を含む、ミミズの生殖巣再生能力を利用した形質転換ミミズの作製方法。
- 前記ミミズは、前半部に生殖巣を含むミミズであることを特徴とする請求項1に記載の形質転換ミミズの作製方法。
- 前記ミミズは、環形動物(Annelids)多毛類(Polychaeta)或いは環形動物(Annelids)貧毛類(Oligochaeta)に属するミミズであることを特徴とする請求項2に記載の形質転換ミミズの作製方法。
- 前記ミミズは、山ミミズ(Perionyx excavatus)或いはヤマトヒメミミズ(Enchytraeus japonensis)であることを特徴とする請求項3に記載の形質転換ミミズの作製方法。
- 前記標的遺伝子は、成長ホルモン、成長ホルモン分泌誘導ホルモン、性腺ホルモン、性ホルモン分泌誘導ホルモン、インターフェロン類及びインターフェロン受容体類、コロニー刺激因子、インターロイキン類、エリスロポエチン、インシュリン、アンジオテンシン、トロンボポエチン、レプチン、レチノール結合因子、アディポネクチン、骨形成成長因子、B細胞因子、T細胞因子、神経成長因子類、細胞表面抗原、単一クローン抗体、ウイルス由来ワクチン抗原、血液凝固調節因子、プロラクチン、肥満抑制調節因子、抗酸化酵素(SOD)及びたんぱく質分解酵素からなる群から選ばれた1種以上であることを特徴とする請求項1に記載の形質転換ミミズの作製方法。
- 請求項1から5のいずれか一項の方法により作製された形質転換ミミズ。
- 前記形質転換ミミズは、hEPO遺伝子が標的遺伝子として導入されている或いはhGH遺伝子が標的遺伝子として導入されていることを特徴とする請求項6に記載の形質転換ミミズ。
- 1)請求項6の形質転換ミミズからミミズの体液を得る段階、2)前記1)段階から得たミミズの体液に溶解緩衝液(lysis buffer)を入れて攪拌機で均質粉砕して均質液を得る段階、3)前記均質液を遠心分離し沈殿を通じて組換たんぱく質を収得する段階、4)前記収得された組換たんぱく質を精製及び分離する段階、を含む、組換たんぱく質の生産方法。
- 前記1)段階でミミズの体液は、アルコールを利用して抽出する方法、冷温水を含む温度調節装置の温度偏差を利用して抽出する方法、塩化ナトリウムを含む塩を利用して抽出する方法、体液抽出緩衝液(body fluid extraction buffer)を利用して抽出する方法、及び電気衝撃を利用して抽出する方法のうち選ばれた方法を利用してミミズから抽出して得られたことを特徴とする請求項8に記載の組換たんぱく質の生産方法。
- 前記組換たんぱく質は、成長ホルモン、成長ホルモン分泌誘導ホルモン、性腺ホルモン、性ホルモン分泌誘導ホルモン、インターフェロン類及びインターフェロン受容体類、コロニー刺激因子、インターロイキン類、エリスロポエチン、インシュリン、アンジオテンシン、トロンボポエチン、レプチン、レチノール結合因子、アディポネクチン、骨形成成長因子、B細胞因子、T細胞因子、神経成長因子類、細胞表面抗原、単一クローン抗体、ウイルス由来ワクチン抗原、血液凝固調節因子、プロラクチン、肥満抑制調節因子、抗酸化酵素(SOD)及びたんぱく質分解酵素からなる群から選ばれた1種以上であることを特徴とする請求項8に記載の組換たんぱく質の生産方法。
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