Microfluidic, marker-free isolation of circulating tumor cells from blood samples

The ability to isolate and analyze rare circulating tumor cells (CTCs) has the potential to further our understanding of cancer metastasis and enhance the care of cancer patients. In this protocol, we describe the procedure for isolating rare CTCs from blood samples by using tumor antigen–independen...

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Veröffentlicht in:Nature protocols 2014-03, Vol.9 (3), p.694-710
Hauptverfasser: Karabacak, Nezihi Murat, Spuhler, Philipp S, Fachin, Fabio, Lim, Eugene J, Pai, Vincent, Ozkumur, Emre, Martel, Joseph M, Kojic, Nikola, Smith, Kyle, Chen, Pin-i, Yang, Jennifer, Hwang, Henry, Morgan, Bailey, Trautwein, Julie, Barber, Thomas A, Stott, Shannon L, Maheswaran, Shyamala, Kapur, Ravi, Haber, Daniel A, Toner, Mehmet
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container_end_page 710
container_issue 3
container_start_page 694
container_title Nature protocols
container_volume 9
creator Karabacak, Nezihi Murat
Spuhler, Philipp S
Fachin, Fabio
Lim, Eugene J
Pai, Vincent
Ozkumur, Emre
Martel, Joseph M
Kojic, Nikola
Smith, Kyle
Chen, Pin-i
Yang, Jennifer
Hwang, Henry
Morgan, Bailey
Trautwein, Julie
Barber, Thomas A
Stott, Shannon L
Maheswaran, Shyamala
Kapur, Ravi
Haber, Daniel A
Toner, Mehmet
description The ability to isolate and analyze rare circulating tumor cells (CTCs) has the potential to further our understanding of cancer metastasis and enhance the care of cancer patients. In this protocol, we describe the procedure for isolating rare CTCs from blood samples by using tumor antigen–independent microfluidic CTC-iChip technology. The CTC-iChip uses deterministic lateral displacement, inertial focusing and magnetophoresis to sort up to 10 7 cells/s. By using two-stage magnetophoresis and depletion antibodies against leukocytes, we achieve 3.8-log depletion of white blood cells and a 97% yield of rare cells with a sample processing rate of 8 ml of whole blood/h. The CTC-iChip is compatible with standard cytopathological and RNA-based characterization methods. This protocol describes device production, assembly, blood sample preparation, system setup and the CTC isolation process. Sorting 8 ml of blood sample requires 2 h including setup time, and chip production requires 2–5 d.
doi_str_mv 10.1038/nprot.2014.044
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subjects 631/1647/2230
631/1647/350/877
631/67/2322
Analysis
Analytical Chemistry
Antibodies
Biological Techniques
Blood
Cancer
Cell Separation - methods
Cells
Computational Biology/Bioinformatics
Humans
Insect Proteins
Leukocytes
Life Sciences
Magnets
Metastasis
Microarrays
Microfluidic Analytical Techniques - methods
Neoplastic Cells, Circulating
Organic Chemistry
Physiological aspects
protocol
Sample preparation
Tumor antigens
Tumors
title Microfluidic, marker-free isolation of circulating tumor cells from blood samples
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