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신정현,장혜연,정진수,조경화,황기은,김소영,김휘정,이삼윤,이미경,박순아,문성록,이강규,조향정,양세훈,Shin. Jeong-Hyun,Jang. Hye-Yeon,Chung. Jin-Soo,Cho. Kyung-Hwa,Hwang. Ki-
간행물명
Tuberculosis and respiratory diseases : TRD
권/호정보
2010년|69권 1호|pp.16-23 (8 pages)
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대한결핵및호흡기학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Background: Most lung cancer patients receive systemic chemotherapy at an advanced stage disease. Cisplatin-based chemotherapy is the main regimen for treating advanced lung cancer. Recently, autophagy has become an important mechanism of cellular adaptation under starvation or cell oxidative stress. The purpose of this study was to determine whether or not autophagy can occurred in cisplatin-treated lung cancer cells. Methods: H460 cells were incubated with RPMI 1640 and treated in $5{mu}M$ or $20{mu}M$ cisplatin concentrations at specific time intervals. Cells surviving cisplatin treatment were measured and compared using an MTT cell viability assay to cells that underwent apoptosis with autophagy by nuclear staining, apoptotic or autophagic related proteins, and autophagic vacuoles. The development of acidic vascular organelles was using acridine orange staining and fluorescent expression of GFP-LC3 protein in its transfected cells was observed to evaluate autophagy. Results: Lung cancer cells treated with $5{mu}M$ cisplatin-treated were less sensitive to cell death than $20{mu}M$ cisplatin-treated cells in a time-dependent manner. Nuclear fragmentation at $5{mu}M$ was not detected, even though it was discovered at $20{mu}M$. Poly (ADP-ribose) polymerase cleavages were not detected in $5{mu}M$ within 24 hours. Massive vacuolization in the cytoplasm of $5{mu}M$ treated cells were observed. Acridine orange stain-positive cells was increased according in time-dependence manner. The autophagosome-incorporated LC3 II protein expression was increased in $5{mu}M$ treated cells, but was not detected in $20{mu}M$ treated cells. The expression of GFP-LC3 were increased in $5{mu}M$ treated cells in a time-dependent manner. Conclusion: The induction of autophagy occurred in $5{mu}M$ dose of cisplatin-treated lung cancer cells.