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通过单细胞RNA测序识别结肠直肠癌细胞干细胞

Kangyu Lin¹, Saikat Chowdhury¹, Mohammad A Zeineddine¹

¹Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.

Molecular cancer research : MCR

|December 29, 2023

概括

这项研究引入了一种新的干细胞特征,用于识别使用单细胞RNA测序的结直肠癌干细胞 (CSC). 在结直肠癌患者中,较高的干度得分与较短的无疾病生存率相关,表明复发风险.

科学领域:

在瘤学瘤学.
基因组学就是基因组学.
细胞生物学细胞生物学

背景情况:

大肠直肠癌干细胞 (CSCs) 对于转移,复发和治疗耐药性至关重要.
现有的CSC标记在单细胞水平上显示异质性和有限的实用性.

研究的目的:

使用RNA测序在单细胞水平上识别结肠直肠CSC.
为结直肠CSCs开发一个强大的茎状特征.

主要方法:

单细胞RNA测序在初级结肠瘤,肝转移和正常组织上进行.
开发了一种新的单细胞干细胞特征 (SCS_sig) 来识别结直肠CSCs.
骨干水平被量化并与患者生存数据相关联.

主要成果:

经典的CSC标记在单细胞数据中显示出不良对齐.
新的SCS_sig有效地识别了结直肠CSCs.
瘤细胞表现出干性连续性,与正常细胞的双模分布不同,表明更大的可塑性.
较高的SCS_sig得分与较短的无病生存时间有显著的关联.

结论:

开发的茎状特征为在单细胞水平上识别结直肠CSC提供了更准确的方法.
瘤干细胞是连续的,表明可塑性可能有助于结直肠癌的进展.
结肠直肠癌的茎度增加与复发的风险更高有关.

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RNA-seq

RNA-seq

RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...