人間の胎児肝臓の血液形成の解読
Dorin-Mirel Popescu1, Rachel A Botting1, Emily Stephenson1
1Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK.
Nature
|October 11, 2019
まとめ
この研究では,ヒトの胎児の血液細胞の発達を単細胞プロファイリングでマッピングしています. 血液形成幹と多能原始体 (HSC/MPP) の分化と組織微環境の影響に関する新しい洞察を明らかにしています.
科学分野:
- 発達生物学
- 血液学
- 免疫学
背景:
- 胎児の肝臓の血液形成は 血液と免疫細胞の生成に不可欠です
- 人間の胎児の肝血形成,特に血液形成幹と多能原産体の行動 (HSC/MPP) はよく理解されていません.
- 早期の血液細胞発達の理解は 小児の血液疾患の治療の鍵です
研究 の 目的:
- ヒトの血液と免疫細胞の全範囲を 特定する
- HSC/MPPの分化経路と組織マイクロ環境の影響をマッピングする.
- 胎児の肝臓の血液形成に関する 総合的なアトラスを作成する
主な方法:
- 約14万個の胎児の肝細胞と7万4000個の皮膚,腎臓,卵黄の細胞の単細胞トランスクリプトームプロファイリング.
- HSC/MPPから差異化軌道を推論する.
- HSC/MPPの差異化ポテンシャルの変化の機能的検証
主要な成果:
- 発達中のヒトの血液と免疫細胞の完全なレパートリーを特定する.
- 胎児の皮膚における生理学的エリトポエーシスの発見
- マスト細胞と天然キラー/先天性リンパ性細胞の前駆体の検出
- 赤血球の優位性から胎児の肝臓の血液生成組成の妊娠期の変化の観察,それに伴うHSC/MPPポテンシャルの変化.
結論:
- この研究は,ヒト胎児の肝臓の血液形成の統合図を示しています.
- この地図は,小児の血液と免疫障害の研究のための青写真として機能します.
- これらの発見は,HSC/MPPの治療の可能性を活用するための基準となる.
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