Abstract:
:The efficacies of chemotherapeutic agents are often limited by side effects and acquired drug resistance. We have investigated whether the differential expression pattern of 14-3-3σ affects cisplatin response in non-small cell lung cancer cell lines. Two pairs of parental/cisplatin resistant cell lines (A549/CRA549 and Calu1/CR-Calu1) and clinical lung cancer biopsy samples were analysed for 14-3-3σ expression. Cell viability was assessed by WST assay; and 14-3-3σ expression was suppressed by siRNA transfection. 14-3-3σ mRNA expression increased in CR-A549 and CR-Calu1 compared with their cisplatin-sensitive parental A549 and Calu1 cell lines. But when 14-3-3σ expression was suppressed, elevated cisplatin response was seen in A549 and CR-Calu1 cell lines. Increased 14-3-3σ expression might also account for reduced cisplatin response in vivo, since, 14-3-3σ expression in clinical biopsy samples obtained from lung cancer patients undergoing cisplatin-based chemotherapy significantly higher in the non-responder compared with the responder group. We therefore propose that increased 14-3-3σ expression is correlated with cisplatin response in non-small cell lung cancer cells; monitoring its expression might become useful in the future in predicting poor outcome to cisplatin treatment and/or the verification of acquired cisplatin resistance in lung cancer patients.
journal_name
Cell Biol Intjournal_title
Cell biology internationalauthors
Cetintas VB,Tetik A,Cok G,Kucukaslan AS,Kosova B,Gunduz C,Veral A,Eroglu Zdoi
10.1002/cbin.10006subject
Has Abstractpub_date
2013-01-01 00:00:00pages
78-86issue
1eissn
1065-6995issn
1095-8355journal_volume
37pub_type
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