NDLI: The analysis of chemotherapy resistance in human lung cancer cell line with microchip-based system

Content Provider	Springer Nature Link
Author	Ying yan, Wang Tao, Wang Xin, Liu Hong wei, Gai Bing cheng, Lin Qi, Wang
Copyright Year	2007
Abstract	Microchip-based systems have many desirable characteristics and can be used in much cellular biochemical analysis. Glucose-regulated protein 78 (GRP78), an endoplasmic reticulum chaperone, has a critical role in chemotherapy resistance of some cancers. This work aimed at analyzing the correlation between the expression of GRP78 and an anticancer drug, topoisomerase II inhibitor-VP-16, in human lung cancer cell line NCI-H460 using this microchip-based system. The cells were cultured on a PDMS chip, the expression of GRP78 at both protein and mRNA levels for the cells under the condition with or without the induction of A23187 were assayed by immunofluorescence and chip electrophoresis, respectively. Then the cells were treated by VP-16, percentages of apoptosis and the cycle distributions of the cells were detected by flow cytometry. The cells cultured on the PDMS attached and spread well to micro-channels with high viability. Compared with the non-induced cells, the expression of GRP78 at both protein and mRNA levels for the A23187-induced cells were increased greatly. After treatment by VP-16, the percentage of apoptotic cells decreased nearly threefold for the A23187-induced cells in contrast to the non-induced cells (13.15 ± 3.84% versus 34.03 ± 11.45%), and the cells distributed in S phase reduced dramatically (11.96 ± 1.27% versus 20.76 ± 3.05%) whereas in G1 phase increased greatly (74.16 ± 0.95% versus 57.06 ± 4%). GRP78 is correlated to the resistance to VP-16 in human lung cancer cell line. The microchip-based system has the potential application and feasibility for cell culture and its functional research.
Starting Page	429
Ending Page	435
Page Count	7
File Format	PDF
ISSN	13872176
Journal	Biomedical Microdevices
Volume Number	10
Issue Number	3
e-ISSN	15728781
Language	English
Publisher	Springer US
Publisher Date	2008-03-27
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	GRP78 Microchip-based system Immunofluorescence Electrophoresis VP-16 Chemotherapy resistance Engineering Fluid Dynamics Nanotechnology Biophysics/Biomedical Physics Biomedical Engineering
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Molecular Biology Biomedical Engineering

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