骨髄細胞は,自発的な細胞融合によって他の細胞のフェノタイプを採用する
Naohiro Terada1, Takashi Hamazaki, Masahiro Oka
1Department of Pathology, University of Florida College of Medicine, Gainesville, Florida 32610, USA. terada@pathology.ufl.edu
Nature
|April 5, 2002
まとめ
骨髄細胞は,他の細胞と融合し,それらの特性を採用することができます. 変異ではなく,この融合が,研究における明らかな細胞系統の変化を説明し,遺伝分析の必要性を強調する可能性がある.
科学分野:
- 幹細胞生物学 幹細胞生物学とは
- 細胞の可塑性について
- 再生医学は再生医学である.
背景:
- 移植された骨髄細胞は,in vivoで様々な細胞タイプに微分化することが報告されています.
- 以前の研究では,Y染色体のようなマーカーに基づいてドナー細胞の起源を結論付けることが多く,代替メカニズムを潜在的に見過ごしていた.
研究 の 目的:
- 明らかに骨髄細胞の系統の変化の背後にあるメカニズムを調査する.
- 細胞融合が,トランスディフェリエンテーションよりも,観察された細胞運命の可塑性に貢献するかどうかを判断する.
主な方法:
- マウスの骨髄細胞と胚性幹細胞の共同培養は,インタールイキン-3の存在下で行われます.
- 骨髄細胞と胚性幹細胞の間の自発的な融合現象を in vitro で観察する.
- 融合した細胞のフェノタイプの変化を分析する.
主要な成果:
- マウスの骨髄細胞と培養中の胚性幹細胞の間の自発的な融合が実証された.
- 融合した細胞が受容細胞のフェノタイプを採用できることを示した.
- これらの変化は,厳格な遺伝子分析なしに,デディフェレンチエーションまたはトランスディフェレンチエーションとして誤って識別される可能性があることを強調しました.
結論:
- 細胞融合は,骨髄細胞の明らかな変異につながる可能性のあるメカニズムです.
- ドナー固有のマーカーにのみ依存する標準的な方法は,融合をトランスディフェリエンテーションとして誤って解釈する可能性があります.
- 細胞の起源と運命を正確に決定するために,詳細な遺伝分析の必要性を強調しています.
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