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哺乳類の臓器における内生的な再生と修復のための様々なメカニズム
1Divisions of Developmental Biology and Endocrinology, Center for Stem Cell and Organoid Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA. james.wells@cchmc.org.
Nature
|May 18, 2018
まとめ
哺乳類の臓器は 修復のために 定着した幹細胞や原始細胞を使います 細胞の可塑性は 年齢とともに低下し 癌のリスクが高まり 新しい再生療法が必要になります
科学分野:
- 細胞生物学
- 再生医療
- 臓器ホメオスタシス
背景:
- 哺乳類の臓器には様々な細胞タイプと 異なる再生能力があります
- 再生性臓器 (皮膚,消化管) は幹細胞に依存し, 再生性臓器 (肝臓,肺) は原始細胞を使用する.
- 細胞の可塑性に関わる臓器修復メカニズムは 極めて重要ですが 年齢とともに衰退します
研究 の 目的:
- 臓器の修復と再生における 細胞の可塑性の役割を調べる
- 老化による再生能力の低下を理解する
- 癌のリスクを軽減しながら組織修復のための治療戦略を調査する.
主な方法:
- 幹細胞生物学と臓器再生に関する既存の文献のレビュー
- 傷害に対する細胞の可塑性の分析
- 細胞修復メカニズムにおける年齢関連の変化の検討
主要な成果:
- 定着した幹細胞と分化した細胞は 損傷後の修復を促す可塑性を示します
- 細胞の再生能力は 年齢とともに低下する.
- 逆説的に言えば 臓器の修復能力は 年齢とともに低下するので 癌のリスクは増加します
結論:
- 細胞の可塑性を利用することで 組織修復と再生の可能性が生まれます
- 治療戦略は再生効果と悪性変異のリスクをバランスとしなければならない.
- 細胞の可塑性における 年齢関連の変化を理解することは 未来の再生医療の鍵です
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