マウスの胚性幹細胞から卵細胞を導出する

Karin Hübner¹, Guy Fuhrmann, Lane K Christenson

¹Germline Development Group, Center for Animal Transgenesis and Germ Cell Research, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center, 382 West Street Road, Kennett Square, PA 19348, USA.

Science (New York, N.Y.)

|May 6, 2003

まとめ

マウスの胚性幹細胞は,培養中に機能的なオオゴニアに発展し,メオシスを開始し,卵泡のような構造を形成することができます. この画期的な発見は,生殖線操作と生殖能力の研究を進めています.

科学分野:

発達生物学発達生物学について
幹細胞生物学幹細胞生物学
生殖生物学生殖生物学

背景:

哺乳類の繁殖は,性二形態生殖細胞に依存している.
胚性幹細胞は,通常,培養において多能性ではなく,全能性と考えられる.
以前の研究では,培養幹細胞から生殖細胞を成功裏に生成することができなかった.

研究の目的:

ネズミの胚性幹細胞の胚性幹細胞の胚性幹細胞に微分する可能性を in vitro で調査する.
培養幹細胞から機能的なオオゴニアの発達を実証する.
ゲルムライン操作と生育研究における応用を探求する.

主な方法:

マウスの胚性幹細胞の培養は,特定の差別化条件下で行われます.
微分化の開始を含む生殖細胞の発達の観察と分析.
卵泡のような構造の形成と,その後の芽細胞への発展の評価.

主要な成果:

マウスの胚性幹細胞が,培養でオオゴニアに微分化した.
これらのオオゴニアは,メオシスに成功しました.
隣接する細胞の徴用により,卵泡のような構造が形成され,それが芽細胞に発展しました.

結論:

胚性幹細胞は,in vitroでオオゲネシスを行う能力を持っています.
この能力は,生殖線操作と核移転のための新しい道を開く.
この発見は,細菌と体細胞の相互作用と分化を理解し,不妊治療の進歩に大きく貢献しています.

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