科學家繪製出胎兒基因表達的人類細胞圖譜
作者:
小柯機器人發布時間:2020/11/16 13:42:53
美國華盛頓大學Jay Shendure、Cole Trapnell等研究人員合作繪製出胎兒基因表達的人類細胞圖譜。該項研究成果發表在2020年11月13日出版的《科學》雜誌上。
研究人員在胎兒組織中生成了基因表達和染色質可及性的人類細胞圖譜。對於基因表達,研究人員對代表15個器官的110多個樣本應用了三級組合索引,最終分析了約400萬個單細胞。研究人員利用文獻和其他圖譜來鑑別和注釋數百種組織內和跨組織的細胞類型和亞型。
這些分析集中於廣泛分布細胞類型的器官特異性分化(例如血液、內皮細胞和上皮細胞)、胎兒紅細胞生成部位(特別是腎上腺),以及與小鼠發育圖譜的整合(例如血液的保守分化)。這些數據是探索多種組織和細胞類型中體內人類基因表達的豐富資源。
據悉,人類細胞類型分化過程中基因表達程序具有基礎研究意義。
附:英文原文
Title: A human cell atlas of fetal gene expression
Author: Junyue Cao, Diana R. O』Day, Hannah A. Pliner, Paul D. Kingsley, Mei Deng, Riza M. Daza, Michael A. Zager, Kimberly A. Aldinger, Ronnie Blecher-Gonen, Fan Zhang, Malte Spielmann, James Palis, Dan Doherty, Frank J. Steemers, Ian A. Glass, Cole Trapnell, Jay Shendure
Issue&Volume: 2020/11/13
Abstract: The gene expression program underlying the specification of human cell types is of fundamental interest. We generated human cell atlases of gene expression and chromatin accessibility in fetal tissues. For gene expression, we applied three-level combinatorial indexing to >110 samples representing 15 organs, ultimately profiling ~4 million single cells. We leveraged the literature and other atlases to identify and annotate hundreds of cell types and subtypes, both within and across tissues. Our analyses focused on organ-specific specializations of broadly distributed cell types (such as blood, endothelial, and epithelial), sites of fetal erythropoiesis (which notably included the adrenal gland), and integration with mouse developmental atlases (such as conserved specification of blood cells). These data represent a rich resource for the exploration of in vivo human gene expression in diverse tissues and cell types.
DOI: 10.1126/science.aba7721
Source: https://science.sciencemag.org/content/370/6518/eaba7721
Science:《科學》,創刊於1880年。隸屬於美國科學促進會,最新IF:41.037