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Cell:新型单细胞测序技术帮助分析乳腺癌的肿瘤侵袭模式

2018-01-15 药明康德 学术经纬

导管原位癌 (ductal carcinoma in situ,DCIS) 是一种早期乳腺癌,它可能转化成为浸润性导管癌 (invasive ductal carcinoma,IDC)。由于乳腺导管中的癌细胞数目很少和不同肿瘤克隆之间的异质性,研究人员很难对肿瘤细胞的基因组进化过程进行了解。

导管原位癌 (ductal carcinoma in situ,DCIS) 是一种早期乳腺癌,它可能转化成为浸润性导管癌 (invasive ductal carcinoma,IDC)。由于乳腺导管中的癌细胞数目很少和不同肿瘤克隆之间的异质性,研究人员很难对肿瘤细胞的基因组进化过程进行了解。德州大学MD安德森癌症中心 (University of Texas MD Anderson Cancer Center) 的研究人员开发出一种新型单细胞测序技术,在对单细胞的基因组进行测序的同时保留了这个细胞在组织中的空间信息。运用这项技术,研究人员对10名同时携带DCIS 和IDC的乳腺癌患者体内的1293个细胞进行了单细胞测序。研究结果能够直接勾画出从DCIS演变到IDC 的基因组谱系,而且研究表明DCIS细胞位于导管中时就积累了大部分的基因突变和拷贝数目变异。这项研究表明DCIS在导管中会进化出多个具有侵袭能力的肿瘤克隆,然后一个或多个克隆会脱离导管并转移到附近的组织中,形成浸润性导管癌。

原始出处:

Anna K. Casasent,et al.,Multiclonal Invasion in Breast Tumors Identified by Topographic Single Cell Sequencing.Cell.Volume 172, Issues 1-2, p205–217.e12, 11 January 2018.

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    2018-06-19 维他命
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    2018-01-16 虈亣靌

    学习了.涨知识

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