当前位置:科学网首页 > 小柯机器人 >详情
研究揭示人视网膜及其类器官在单细胞分辨率下的细胞类型
作者:小柯机器人 发布时间:2020/9/22 14:18:39

瑞士巴塞尔大学Botond Roska等研究人员合作揭示人视网膜及其类器官在单细胞分辨率下的细胞类型。该研究于2020年9月17日发表于国际学术期刊《细胞》。

研究人员开发了具有多个核和突触层以及功能性突触的光敏性人类视网膜类器官。研究人员在七个发育时间点从这些类器官以及从光反应性成年人类视网膜的外围、中央凹、色素上皮和脉络膜中测序了285,441个单细胞的RNA,并进行了组织化学分析。类器官中的细胞类型可在体外成熟到稳定的“发育”状态,其速率类似于体内人视网膜的发育。类器官细胞类型的转录组趋向于成年外周视网膜细胞类型的转录组。
 
疾病相关基因的表达在成年视网膜中是细胞类型特异性的,而在类器官中则保留了细胞类型的特异性。研究人员在黄斑变性等疾病中发现了意外的细胞类型。这一资源鉴定了类器官疾病机制研究以及人类视网膜靶向修复的细胞靶标。
 
据介绍,人类类器官可概述其靶器官的细胞类型多样性和功能,对于基础和转化研究具有重要意义。
 
附:英文原文

Title: Cell Types of the Human Retina and Its Organoids at Single-Cell Resolution

Author: Cameron S. Cowan, Magdalena Renner, Martina De Gennaro, Brigitte Gross-Scherf, David Goldblum, Yanyan Hou, Martin Munz, Tiago M. Rodrigues, Jacek Krol, Tamas Szikra, Rachel Cuttat, Annick Waldt, Panagiotis Papasaikas, Roland Diggelmann, Claudia P. Patino-Alvarez, Patricia Galliker, Stefan E. Spirig, Dinko Pavlinic, Nadine Gerber-Hollbach, Sven Schuierer, Aldin Srdanovic, Marton Balogh, Riccardo Panero, Akos Kusnyerik, Arnold Szabo, Michael B. Stadler, Selim Orgül, Simone Picelli, Pascal W. Hasler, Andreas Hierlemann, Hendrik P.N. Scholl, Guglielmo Roma, Florian Nigsch, Botond Roska

Issue&Volume: 2020/09/17

Abstract: Human organoids recapitulating the cell-type diversity and function of their target organ are valuable for basic and translational research. We developed light-sensitive human retinal organoids with multiple nuclear and synaptic layers and functional synapses. We sequenced the RNA of 285,441 single cells from these organoids at seven developmental time points and from the periphery, fovea, pigment epithelium and choroid of light-responsive adult human retinas, and performed histochemistry. Cell types in organoids matured in vitro to a stable “developed” state at a rate similar to human retina development in vivo. Transcriptomes of organoid cell types converged toward the transcriptomes of adult peripheral retinal cell types. Expression of disease-associated genes was cell-type-specific in adult retina, and cell-type specificity was retained in organoids. We implicate unexpected cell types in diseases such as macular degeneration. This resource identifies cellular targets for studying disease mechanisms in organoids and for targeted repair in human retinas.

DOI: 10.1016/j.cell.2020.08.013

Source: https://www.cell.com/cell/fulltext/S0092-8674(20)31004-7

期刊信息
Cell:《细胞》,创刊于1974年。隶属于细胞出版社,最新IF:36.216
官方网址:https://www.cell.com/