Journal article
A microfluidic device for label-free isolation of tumor cell clusters from unprocessed blood samples
Biomicrofluidics, Vol.13(4), 044111
07/01/2019
DOI: 10.1063/1.5111888
PMID: 31462955
Abstract
Primary cancers disseminate both single circulating tumor cells (CTCs) and CTC “clusters,” the latter of which have been shown to demonstrate greater metastatic propensity and adverse impact on prognosis. Many devices developed to isolate single CTCs also capture CTC clusters, but there is translational potential for a platform specifically designed to isolate CTC clusters. Herein, we introduce our microfluidic device for isolating CTC clusters (“Microfluidic Isolation of CTC Clusters” or MICC), which is equipped with ∼10 000 trap chambers that isolate tumor cell clusters based on their large sizes and dynamic force balance against a pillar obstacle in the trap chamber. Whole blood is injected, followed by a wash step to remove blood cells and a final backflush to release intact clusters for downstream analysis. Using clusters from tumor cell-line and confocal microscopy, we verified the ability of the MICC platform to specifically capture tumor cell clusters in the trap chambers. Our flow rate optimization experiments identified 25 μl/min for blood injection, 100 μl/min as wash flow rate, and 300 μl/min as the release flow rate – indicating that 1 ml of whole blood can be processed in less than an hour. Under these optimal flow conditions, we assessed the MICC platform’s capture and release performance using blood samples spiked with different concentrations of clusters, revealing a capture efficiency of 66%–87% and release efficiency of 76%–90%. The results from our study suggest that the MICC platform has the potential to isolate CTC clusters from cancer patient blood, enabling it for clinical applications in cancer management.
Details
- Title: Subtitle
- A microfluidic device for label-free isolation of tumor cell clusters from unprocessed blood samples
- Creators
- Nabiollah Kamyabi - The University of Texas MD Anderson Cancer CenterJonathan Huang - The University of Texas MD Anderson Cancer CenterJaewon J. Lee - The University of Texas MD Anderson Cancer CenterVincent Bernard - The University of Texas MD Anderson Cancer CenterAlexander Semaan - The University of Texas MD Anderson Cancer CenterBret Stephens - The University of Texas MD Anderson Cancer CenterMark W. Hurd - The University of Texas MD Anderson Cancer CenterSiva A. Vanapalli - Texas Tech UniversityAnirban Maitra - The University of Texas MD Anderson Cancer CenterPaola A. Guerrero - The University of Texas MD Anderson Cancer Center
- Resource Type
- Journal article
- Publication Details
- Biomicrofluidics, Vol.13(4), 044111
- DOI
- 10.1063/1.5111888
- PMID
- 31462955
- NLM abbreviation
- Biomicrofluidics
- ISSN
- 1932-1058
- eISSN
- 1932-1058
- Grant note
- SE-2616/2-1 / Deutsche Forschungsgemeinschaft (http://data.elsevier.com/vocabulary/SciValFunders/501100001659) Deutsche Forschungsgemeinschaft (http://data.elsevier.com/vocabulary/SciValFunders/501100001659) RP160517 / Cancer Prevention and Research Institute of Texas (100004917) National Cancer Institute (http://data.elsevier.com/vocabulary/SciValFunders/100000054) Cancer Prevention and Research Institute of Texas (http://data.elsevier.com/vocabulary/SciValFunders/100004917) RP140106; RP170067; T32CA217789-03; U54CA096297 / CPRIT Research Training Program RP140298; T32CA009599 / National Institutes of Health (http://data.elsevier.com/vocabulary/SciValFunders/100000002) U54CA096297 / National Computational Infrastructure (100010582) Hangzhou Guangkeande (Cosmos) Biotechnology Company LTD RP160517 / Cancer Prevention and Research Institute of Texas (http://data.elsevier.com/vocabulary/SciValFunders/100004917)
- Language
- English
- Date published
- 07/01/2019
- Academic Unit
- Surgery
- Record Identifier
- 9985240989802771
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