エリトロミエロイドの分岐点
Leïla Perié1, Ken R Duffy2, Lianne Kok3
1Division of Immunology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, the Netherlands; Theoretical Biology and Bioinformatics, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands; Institut Curie, PSL Research University, CNRS UMR168, 26 rue d'Ulm, 75005 Paris, France; Sorbonne Universités, UPMC Univ Paris 06, 4 place Jussieu, 75005 Paris, France.
Cell
|December 22, 2015
まとめ
血液形成幹細胞の発達は複雑である. 共通の骨髄性原始細胞 (CMP) は均一ではなく,ほとんどが赤血球または骨髄性細胞のみを生成し,血球発達の新しいモデルを明らかにする.
科学分野:
- 血液学
- 発達生物学
- 幹細胞生物学
背景:
- 血液形成性幹細胞 (HSC) は,プロジェニータ段階を経て様々な成熟した血液細胞に微分化します.
- 最初の系統決定は,共通の骨髄原体 (CMP) と共通のリンパ原体 (CLP) 段階で行われると考えられています.
- 早期の血統関係を理解することは 再生医療と血液疾患の治療に不可欠です
研究 の 目的:
- 血液細胞の発達における共通骨髄原体 (CMP) の異質性を調査する.
- ミエロイドとエリソイドの 遺伝子の分岐の正確なタイミングと性質を 明らかにするためです
- 血液形成の枝分かれと血統結合のモデルを改良する.
主な方法:
- シングル・セル・リネージ・トラッキング in vivo
- プロジェンター集団の移植検査
- 初期の造血祖先の遺伝的標識
主要な成果:
- 共通の骨髄性原生細胞 (CMP) は非常に異質で,ほとんどの個別のCMPは,赤血球または骨髄性細胞を生成しますが,両方ではありません.
- エリソイドとミエロイドの系統の分岐は,これまで考えられていたよりも早く,マルチポテンツの祖先 (MPPs) 内で起こります.
- 複数の系統のコミットメントが MPP プール内で並行的に発生するモデルを支持する証拠があります.
結論:
- CMP が赤血球系と骨髄系の両方を生成する均一な祖先群であるという伝統的見解は異議を唱える.
- 血芽形成における血統結合はより複雑で,以前の祖先集団内の並列分岐イベントを含む.
- この改訂された血液形成の分岐モデルは 血液細胞の形成と調節に関する新しい洞察を提供します.
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