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MiRNA expression of lung cancer cells A549 and cisplatin (DDP) resistant lung cancer cells A549/DDP

ABSTRACT: To investigate the difference of miRNA expression between lung cancer cell A549 and its DDP-resistant cell strain A549/DDP, we have employed miRNA microarray expression to discover the difference expression of miRNAs of A549 cells and A549/DDP. We conducted RT-qPCR to examine the expression levels of top differential expressed miRNAs, namely, miR-197-5p, miR-4443, miR-642a-3p, miR-27b-3p and miR-100-5p, confirming low variability between two methods. The A549/DDP was established from A549 in our laboratory, by exposing A549 to gradually increasing DDP concentrations, until the final concentration at 1Î¼g/ml. To avoid the influence of drug to the A549/DDP cells, they were cultured in a drug-free medium for at least two weeks before gene expression analysis. miRNA expression of A549 and A549/DDP was then analzyed.

ORGANISM(S): Homo sapiens

SUBMITTER: Jifeng Feng

PROVIDER: E-GEOD-85603 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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