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Derivation of Cardiac Progenitor Cells from Embryonic Stem Cells
Published on: January 12, 2015
哺乳類の心臓におけるバイポテンシャル心筋および滑らかな筋肉細胞の前駆体の発達の起源
Sean M Wu1, Yuko Fujiwara, Susan M Cibulsky
1Division of Hematology/Oncology, Children's Hospital, Boston, MA 02115, USA.
Cell
|November 25, 2006
まとめ
研究者らは,哺乳類の心臓の発達に共通する前駆細胞を特定した. このNkx2.5(+) 細胞は,心筋細胞,伝導系細胞,および滑らかな筋肉細胞に微分化することができ,心血管系統の特異性に関する新しい洞察を明らかにします.
科学分野:
- 心血管生物学 心血管生物学
- 発達生物学 発達生物学とは
- 幹細胞の研究についてです.
背景:
- 心形成の過程における細胞系統の仕様を理解することは,再生医療にとって極めて重要です.
- 心臓前駆細胞の正確な起源と微分の可能性は,未だに不完全です.
研究 の 目的:
- 心臓特異性Nkx2.5 (((+) 細胞の微分化可能性を調査する.
- 哺乳類の心臓における多様な心血管系統の共通の前駆者を特定する.
主な方法:
- 発達中のマウスの胚からの Nkx2.5 (((+) 細胞と,in vitroで微分化した胚性幹細胞の分離と特徴付け.
- カーディオミオサイト,伝導系細胞,滑らかな筋肉細胞への分化能力の評価.
- c-kit (((+)) Nkx2.5 (((+)) の単細胞分離およびin vivo/in vitroの微分分析を用いたクローン分析.
主要な成果:
- Nkx2.5(+) 細胞のサブセットは,c-kitを表現し,バイポテンシャル分化能力を示した.
- 単一のc-kit (((+) Nkx2.5 (((+) 細胞は,心筋細胞と滑らかな筋肉細胞の両方を in vitro と in vivo で生成することができます.
- Nkx2.5(+) 細胞は,心筋細胞,伝導系細胞,滑らかな筋肉細胞に微分化することが示された.
結論:
- 哺乳類の心臓には一般的な心血管前駆体があり,複数の細胞タイプを生成することができる.
- c-kit (((+) Nkx2.5 (((+) 細胞集団は,心臓血管系統の主要な祖先を表しています.
- これらの発見は,心臓の発達に関する私たちの理解を深め,心臓の再生のための潜在的なターゲットを提供します.
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