News Release

纳米模式的“芯片实验室”可无创检测早期与晚期乳腺癌

Peer-Reviewed Publication

American Association for the Advancement of Science (AAAS)

Nanopatterned "Lab-On-A-Chip" Noninvasively Detects Early and Advanced Breast Cancer (1 of 4)

image: An image of one of the micropatterns tested on the EV-CLUE chip. This material relates to a paper that appeared in the Jun. 10, 2020, issue of <i>Science Translational Medicine</i>, published by AAAS. The paper, by P. Zhang at University of Kansas in Lawrence, KS; and colleagues was titled, "Molecular and functional extracellular vesicle analysis using nanopatterned microchips monitors tumor progression and metastasis." view more 

Credit: [Credit: P. Zhang <i>et al., Science Translational Medicine</i> (2020)]

据一项新的研究披露,一种基于喷墨打印方法的可扩展“芯片实验室”技术可检测出患者血浆样本中的乳腺癌,其准确率超过90%。在对来自100个人的血浆进行测试时,这些新型芯片可发现早期和转移性肿瘤;它们或可在某一天使临床医生能以比目前诊断方法创伤性更小的方式发现新发癌症并对现有肿瘤进行监测。发现早期癌症是取得最佳临床结果的关键,因为根除已转移的晚期肿瘤要困难得多。但目前的癌症检测技术的缺点可谓林林总总:标准的组织活检是创伤性的且无法重复进行,而诸如放射照相术等成像技术无法捕捉到肿瘤生长中的重要变化。) 液体活检(一种可通过简单抽取血液或血浆来检测癌症的测试)可以克服许多这类问题;但尽管经过多年研究,仍没有一种液体活检测试进入广泛临床应用。Peng Zhang和同事如今用其EV-CLUE芯片向液体活检迈出了一步;这是他们用胶体喷墨打印法制造的一种装置。该芯片的工作原理是捕获细胞外囊泡(它们是在细胞间进行分子转运的细微结构),并对MMP14的存在和活性进行扫描搜寻;MMP14是一种与肿瘤进展和转移关联的酶。EV-CLUE成功地将对照组和早期或转移性乳腺癌患者进行区分;在最初一组的30个人中,其准确率为96.7%;在第二组的70人中,其准确率达92.9%。Zhang等人补充说,他们打印技术的强固性和可扩展性可在未来对更多患者进行临床研究。

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