JP4995574B2 - 遺伝子導入鳥類作製法 - Google Patents
遺伝子導入鳥類作製法 Download PDFInfo
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- JP4995574B2 JP4995574B2 JP2006537708A JP2006537708A JP4995574B2 JP 4995574 B2 JP4995574 B2 JP 4995574B2 JP 2006537708 A JP2006537708 A JP 2006537708A JP 2006537708 A JP2006537708 A JP 2006537708A JP 4995574 B2 JP4995574 B2 JP 4995574B2
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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
- A01K67/0275—Genetically modified vertebrates, e.g. transgenic
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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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- 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
- A01K2227/30—Bird
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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
- A01K2267/01—Animal expressing industrially exogenous proteins
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Biotechnology (AREA)
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Description
レトロウイルスベクターに異種遺伝子を導入するには、パッケージングシグナル配列を有するプラスミドを、パッケージング細胞にリポフェクション、エレクトロポレーション法等により導入する方法がある。
抗CD2抗体発現用ベクターコンストラクトpMSCV/GΔAH、pMSCV/GΔAL及びpMSCV/GΔALIHは、以下のように作製した。
22.pETBlue/IgHγ1から抗体H鎖γ1(IgHγ1)の遺伝子断片を制限酵素HindIIIによって切り出し、pMSCV/GのHindIIIサイトへ挿入した。GFP遺伝子と同方向にIgHγ1遺伝子が挿入された構造のプラスミドをpMSCV/GHとした。
27.pETBlue/IgLκからIgLκ遺伝子断片を制限酵素SalIによって切り出し、pMSCV/GΔAのSalIサイトへ挿入した。ΔActプロモーターと同方向にIgLκ遺伝子断片が挿入された構造のプラスミドをpMSCV/GΔALとした。
実施例1で作製したベクターコンストラクトpMSCV/GΔALIHよりレトウイルスベクターを調製するため、パッケージング細胞GP293(クロンテック社製)を直径100mmの培養ディッシュに5×106細胞植え、培養した。培地を新鮮なDMEM(ダルベッコ変法イーグル培地)に交換し、p−VSV−Gベクター(クロンテック社製)8μgとpMSCVNΔAβ8μgをリポフェクション法により前記GP293細胞に導入した。48時間後、ウイルス粒子を含む培養上清を回収し、0.45μm酢酸セルロースフィルター(アドバンテック社製)を通して夾雑物を除去した。得られた溶液にポリブレン(シグマ社製)を10μg/mlとなるように加えウイルス液とした。
ニワトリの受精卵由来PGCは、以下のように調製した。
実施例3で調製した抗CD2抗体発現のための遺伝子が導入されたPGCから、キット(東洋紡社製 MagExtractor−genome−)を用いて抽出したゲノムDNA50ngを使い、PCR法で抗CD2抗体発現用遺伝子が導入されていることを確認した。
実施例1とは別のニワトリ受精卵を用意し、自動転卵装置が内蔵された孵卵器(昭和フランキ社製P−008型)内で37.9℃、湿度65%環境に置いた時刻を孵卵開始時刻(0時間)とし、以後15分毎に90度転卵しながら孵卵を行なった。
Claims (14)
- 第一の鳥受精卵および第二の鳥受精卵を準備し、
第一の鳥受精卵の初期胚から始原生殖細胞を取得し、
異種遺伝子を媒介した1×10 7 cfu/mL以上、1×10 10 cfu/mL以下のタイターをもつモロニー・ミューリン・ロイケミア・ウイルスに由来するレトロウイルスベクターを該始原生殖細胞に体外で感染させて、異種遺伝子を該始原生殖細胞に導入させ、
該始原生殖細胞を第二の鳥受精卵の初期胚に移植し、そして
該第二の鳥受精卵を孵化成長させることを特徴とする、
トランスジェニック鳥類の作製法。 - トランスジェニック鳥類が、生殖系列トランスジェニック鳥である、請求項1記載のトランスジェニック鳥類の作製法。
- 始原生殖細胞の取得が、第一の鳥受精卵の孵卵開始から40時間以降60時間までに行われることを特徴とする、請求項1記載のトランスジェニック鳥類の作製法。
- 始原生殖細胞の第二の鳥受精卵初期胚への移植が、第二の鳥受精卵の孵卵開始から24時間以降72時間までに行われることを特徴とする、請求項1記載のトランスジェニック鳥類の作製法。
- 始原生殖細胞の第二の鳥受精卵初期胚への移植が、第二の鳥受精卵の孵卵開始から48時間以降64時間までに行われることを特徴とする、請求項1記載のトランスジェニック鳥類の作製法。
- 第一の鳥の系統と第二の鳥の系統とが異なることを特徴とする、請求項1〜5のいずれか1項記載のトランスジェニック鳥類の作製法。
- 第一の鳥の系統がニワトリ白色レグホンであり、かつ、第二の鳥の系統がニワトリ横斑プリマスロックであることを特徴とする、請求項6記載のトランスジェニック鳥類の作製法。
- 請求項1記載の作製法にしたがってトランスジェニック鳥類を作製し、
得られたトランスジェニック鳥類を、野生型又は他のトランスジェニック鳥類と交配させることを特徴とするトランスジェニック鳥類の子孫の作製法。 - トランスジェニック鳥類の子孫が完全体トランスジェニック鳥類である、請求項8記載のトランスジェニック鳥類の子孫の作製法。
- 請求項1記載の作製法にしたがってトランスジェニック鳥類を作製し、そしてその体細胞、体液又は卵から異種蛋白質を抽出することを特徴とする、異種蛋白質の生産法。
- 請求項8または9記載の作製法にしたがってトランスジェニック鳥類の子孫を作製し、そしてその体細胞、体液又は卵から異種蛋白質を抽出することを特徴とする、異種蛋白質の生産法。
- 鳥始原生殖細胞に、1×107cfu/mL以上、1×1010cfu/mL以下のタイターをもつモロニー・ミューリン・ロイケミア・ウイルスに由来するレトロウイルスベクターを体外で感染させることを特徴とする、異種遺伝子が導入された生殖細胞の生産方法。
- 鳥始原生殖細胞が、孵卵開始から40時間以降60時間までの鳥受精卵の初期胚から取得されたものであることを特徴とする、請求項12記載の始原生殖細胞の生産方法。
- 請求項1記載の作製法にしたがってトランスジェニック鳥を作製することを特徴とする、畜産用または愛玩用の鳥類の品種を改良する方法。
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