Document Detail

Analysis of chemoresistance in lung cancer with a simple microfluidic device.
MedLine Citation:
PMID:  20949633     Owner:  NLM     Status:  In-Process    
Microchip-based systems have been developed rapidly due to their desirable advantages over conventional platforms. Higher level system integration and complex microdevices are emerging to satisfy the demand for high-throughput and large-scale applications. However, most of the devices need to be fabricated with complicated microvalves and micropumps, which, to some extent, limit the use of the novel technique. In this study, a simple microdevice was developed to perform chemotherapy resistance analysis in lung cancer cell line SPCA1. This device includes a PDMS chip for which a simple external small clip served as a microvalve to control the fluid flow so that the parallel control experiment could be carried out simultaneously, and a syringe pump, which supplied the cells with fresh medium mimicking the microenvironment in vivo. Cell culture, detection of drug resistance related protein P-glycoprotein (P-gp) and glutathione S-transferase-π (GST-π) and cell viability after VP-16 treatment on experimental (pretreated with corresponding inhibitors) and control groups were achieved. The results demonstrated that the cells could grow and spread well for at least 3 days. The expression of P-gp and GST-π was obviously downregulated by corresponding inhibitors. The percentage of apoptotic cells for P-gp inhibition group increased 2.9-fold compared with that of control group (23.7 ± 2.6 versus 8.1 ± 3.0%, p<0.05), while for GST-π inhibition, there was no obvious distinction between the experimental and control group. The simple microdevice is capable of integrating parallel operations involving cell culture and functional analysis, offering an easy and flexible platform for a stable long-term cell culture and comparison research.
Lichuan Zhang; Jiarui Wang; Long Zhao; Qiang Meng; Qi Wang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-10-15
Journal Detail:
Title:  Electrophoresis     Volume:  31     ISSN:  1522-2683     ISO Abbreviation:  Electrophoresis     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8204476     Medline TA:  Electrophoresis     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  3763-70     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Department of Respiratory Medicine, Affiliated Zhongshan Hospital of Dalian University, Dalian, PR China.
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