ヒトの肝細胞アトラスは,異質性および上皮の祖先を明らかにする
Nadim Aizarani1,2,3, Antonio Saviano4,5,6, Sagar1
1Max-Planck-Institute of Immunobiology and Epigenetics, Freiburg, Germany.
Nature
|July 12, 2019
まとめ
この研究では,単細胞RNA配列解析を用いてヒト肝細胞アトラスを作成した. アトラスは新しい肝臓細胞サブタイプと 祖先集団を明らかにし 肝臓疾患の研究を支援しています
科学分野:
- 細胞・分子生物学
- ヘパトロジー
- ゲノミクス
背景:
- 人間の肝臓の複雑な細胞構成は 肝臓疾患の発生率が上昇しているにもかかわらず 十分に理解されていません
- 肝臓疾患の治療方法は限られており,より深い生物学的な洞察が必要であることを強調しています.
研究 の 目的:
- 単細胞RNA配列を用い,ヒト肝細胞アトラスを構築する.
- 新しい細胞サブタイプを特定し,正常なヒト肝臓内のそれらの転写特性を理解する.
- 癌などの肝臓疾患における 細胞の変化を調査するための 資源を提供するためです
主な方法:
- ヒトの正常な肝臓組織から約1万個の細胞を単細胞RNA配列化 (scRNA-seq) した.
- 細胞集団,サブタイプ,および転写領域を特定するためのバイオ情報分析.
- オーガノイド形成のための原始細胞集団の機能的評価.
主要な成果:
- 以前未知の肝臓内皮細胞,クッファー細胞,肝細胞のサブタイプを特定する.
- いくつかの特定された細胞集団におけるトランスクリプトーム全体のゾナーションパターンの発見.
- ヘパトサイトバイアス,コレンジオサイト,およびバイポテントの原始細胞 (TROP2int) を含む異質なEPCAM+集団の特徴化.
- 肝細胞がんと移植された肝細胞の分析におけるアトラスの有用性の実証.
結論:
- 人間の肝細胞アトラスは,正常な肝臓と病気の肝臓の新しい細胞タイプを発見するための貴重なリソースです.
- 特定された祖先群は,バイポテントな肝臓オーガノイドを生成する大きな可能性を示しています.
- このアトラスは肝臓の生物学の理解を深め,肝臓疾患の新たな治療戦略の開発を容易にするでしょう.
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