Cited by 102Microfluidic and Bio-sensing TechnologiesMicrofluidic and Capillary Electrophoresis Applications3D Printing in Biomedical Research

The DOI matches its Crossref record; 24 of the 24 references it cites were found in a registry or an index.

Negative Enrichment of Circulating Tumor Cells Using a Geometrically Activated Surface Interaction Chip

Hyun, Kyung-A, Lee, Tae Yoon, Jung, Hyo-Il·2013·Analytical Chemistry

Abstract

Circulating tumor cells (CTCs) have attracted a great deal of attention, as they can be exploited to investigate metastasis. The molecular and cellular characteristics of these cells are little understood because they are rare and difficult to isolate. Many methods of isolation have centered on affinity-based positive enrichment (i.e., capturing target cells and eluting nontarget cells) using epithelial cell adhesion molecule (EpCAM) antibodies. It is known, however, that not all CTCs express the EpCAM antigen because they are heterogeneous by nature. In addition, negative enrichment (i.e., capturing nontarget cells and eluting target cells) has advantages over positive enrichment in isolating CTCs since the former can collect the target cells in an intact form. In this paper, we introduce a geometrically activated surface interaction (GASI) chip with an asymmetric herringbone structure designed to generate enhanced mixing flows, increasing the surface interaction between the nontarget cells and the channel surface. CD45 antibodies were immobilized inside the channel to capture leukocytes and release CTCs to the outlet. Blood samples from breast, lung, and gastric cancer patients were analyzed. The number of isolated CTCs varied from 1 to 51 in 1 mL of blood. Because our device does not require any labeling processes (e.g., EpCAM antibodies), intact and heterogeneous CTCs can be isolated regardless of EpCAM expression.

Overview

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Crossref · 10.1021/ac3037766

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24 of 24 references verified0 citation errors · 0 not checkable

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Metadata

Authors
Hyun, K.-A., Lee, T. Y., & Jung, H.-I.
Affiliations
  • Yonsei University (KR)
  • LG (South Korea) (KR)
Corresponding author
  • Lee, Tae Yoon
  • Jung, Hyo-Il
Venue
Analytical Chemistry
Published
2013-04-09
Volume
85
Issue
9
Pages
4439-4445
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W2057992135
Cited by
102
References
24
Citations by year
2026: 3 · 2025: 3 · 2024: 3 · 2023: 2 · 2022: 8 · 2021: 3 · 2020: 4 · 2019: 13 · 2018: 15 · 2017: 13 · 2016: 13 · 2015: 10 · 2014: 10 · 2013: 2
FWCI
6.44
Type
journal article
Language
en
Open access
closed
Locations
  • Analytical Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Bio-sensing Technologies
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Capillary Electrophoresis Applications
  • Physical Sciences › Engineering › Biomedical Engineering › 3D Printing in Biomedical Research
Keywords
circulating tumor cells, CTC heterogeneity, breast cancer, lung cancer, gastric cancer, metastasis, label-free cell isolation
MeSH terms
Humans, Neoplastic Cells, Circulating, Surface Properties, Cell Line, Tumor, Microfluidic Analytical Techniques, MCF-7 Cells

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