Isolation and retrieval of circulating tumor cells using centrifugal forces.

Isolation and retrieval of circulating tumor cells using centrifugal forces.
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DOI:
10.1038/srep01259
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发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Lim, Chwee Teck
Lim, Chwee Teck
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Hou, Han Wei;Warkiani, Majid Ebrahimi;Khoo, Bee Luan;Li, Zi Rui;Soo, Ross A.;Tan, Daniel Shao-Weng;Lim, Wan-Teck;Han, Jongyoon;Bhagat, Ali Asgar S.;Lim, Chwee Teck

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Presence and frequency of rare circulating tumor cells (CTCs) in bloodstreams of cancer patients are pivotal to early cancer detection and treatment monitoring. Here, we use a spiral microchannel with inherent centrifugal forces for continuous, size-based separation of CTCs from blood (Dean Flow Fractionation (DFF)) which facilitates easy coupling with conventional downstream biological assays. Device performance was optimized using cancer cell lines (> 85% recovery), followed by clinical validation with positive CTCs enumeration in all samples from patients with metastatic lung cancer (n = 20; 5–88 CTCs per mL). The presence of CD133+ cells, a phenotypic marker characteristic of stem-like behavior in lung cancer cells was also identified in the isolated subpopulation of CTCs. The spiral biochip identifies and addresses key challenges of the next generation CTCs isolation assay including antibody independent isolation, high sensitivity and throughput (3 mL/hr); and single-step retrieval of viable CTCs.
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