An ultra-high-throughput spiral microfluidic biochip for the enrichment of circulating tumor cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Majid Ebrahimi Warkiani
  • Daniel Shao-Weng Tan
  • Ali Asgar S. Bhagat
  • Wan-Teck Lim
  • Yoon Sim Yap
  • Soo Chin Lee
  • Ross A. Soo
  • Jongyoon Han
  • Chwee Teck Lim

Detail(s)

Original languageEnglish
Pages (from-to)3245-3255
Journal / PublicationAnalyst
Volume139
Issue number13
Online published9 Apr 2014
Publication statusPublished - 7 Jul 2014
Externally publishedYes

Abstract

The detection and characterization of rare circulating tumor cells (CTCs) from the blood of cancer patients can potentially provide critical insights into tumor biology and hold great promise for cancer management. The ability to collect a large number of viable CTCs for various downstream assays such as quantitative measurements of specific biomarkers or targeted somatic mutation analysis is increasingly important in medical oncology. Here, we present a simple yet reliable microfluidic device for the ultra-high-throughput, label-free, size-based isolation of CTCs from clinically relevant blood volumes. The fast processing time of the technique (7.5 mL blood in less than 10 min) and the ability to collect more CTCs from larger blood volumes lends itself to a broad range of potential genomic and transcriptomic applications. A critical advantage of this protocol is the ability to return all fractions of blood (i.e., plasma (centrifugation), CTCs and white blood cells (WBCs) (size-based sorting)) that can be utilized for diverse biomarker studies or time-sensitive molecular assays such as qRT-PCR. The clinical use of this biochip was demonstrated by detecting CTCs from 100% (10/10) of blood samples collected from patients with advanced-stage metastatic breast and lung cancers. The CTC recovery rate ranged from 20 to 135 CTCs mL−1 and obtained under high purity (of 1/CTC out of every 30-100 WBCs which gives ∼4 log depletion of WBCs). They were identified with immunofluorescence assays (pan-cytokeratin+/CD45−) and molecular probes such as HER2/neu.

Citation Format(s)

An ultra-high-throughput spiral microfluidic biochip for the enrichment of circulating tumor cells. / Warkiani, Majid Ebrahimi; Khoo, Bee Luan; Tan, Daniel Shao-Weng; Bhagat, Ali Asgar S.; Lim, Wan-Teck; Yap, Yoon Sim; Lee, Soo Chin; Soo, Ross A.; Han, Jongyoon; Lim, Chwee Teck.

In: Analyst, Vol. 139, No. 13, 07.07.2014, p. 3245-3255.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal