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Nature methods:利用微芯片捕获循环系统癌细胞

2015-05-25 佚名 生物谷

近日,国际学术期刊nature methods发表了美国科学家的一项最新研究进展,他们开发出一种微芯片(cluster-chip),能够捕获血液中的循环肿瘤细胞群体,对于研究循环肿瘤细胞在肿瘤发展和转移中的作用非常重要,是一项具有重要意义的技术突破。   癌细胞可以突破肿瘤限制通过血液进行转移,或以单个循环肿瘤细胞(CTC)形式,或以多细胞群体(CTC cluster)的形式,最终在

近日,国际学术期刊nature methods发表了美国科学家的一项最新研究进展,他们开发出一种微芯片(cluster-chip),能够捕获血液中的循环肿瘤细胞群体,对于研究循环肿瘤细胞在肿瘤发展和转移中的作用非常重要,是一项具有重要意义的技术突破。

 
癌细胞可以突破肿瘤限制通过血液进行转移,或以单个循环肿瘤细胞(CTC)形式,或以多细胞群体(CTC cluster)的形式,最终在远端器官驻留。目前富集CTC的技术主要针对分离单个CTC,但在一些情况下,仍可检测到CTC cluster,现在对于CTC cluster在肿瘤发展和转移过程中的了解很少,CTC cluster的真正丰度以及对于肿瘤转移的重要性一直不能得到很好的诠释。
 
在该项研究中,研究人员开发出一种微芯片技术(cluster-chip),能够从未经任何处理的血液中捕获CTC cluster而不依赖于肿瘤特异性的标记物。这种方法通过特定的分支诱捕器对CTC cluster进行分离,并且在低剪应力条件下保持了CTC cluster细胞群的完整性,即使是两个细胞组成的CTC cluster也能够被有效捕获。利用这种微芯片,研究人员从转移性乳腺癌,前列腺癌和黑色素瘤病人血液中分离了CTC cluster,随后进行了RNA测序,证实了其肿瘤来源,还在cluster中发现了一些组织来源的巨噬细胞。
 
总的来说,研究人员开发出一种能够捕获血液中CTC cluster的微芯片,对于了解CTC cluster的生物学特性及其在肿瘤转移中的作用具有重要意义。

原始出处:

A Fatih Sarioglu,Nicola Aceto,Nikola Kojic et al.A microfluidic device for label-free, physical capture of circulating tumor cell clusters.Nature Methods, May 18, 2015.doi:10.1038/nmeth.3404

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    2016-03-15 一闲
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    2015-12-27 liye789132251
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    2015-05-27 yxch36
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    2015-05-27 lixiaol

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