Five human melanoma cells lines, including A-375, 1205Lu,
UACC903,
CHL-1 and
sk-mel-5, were purchased from American Type Culture Collection. Cells were maintained in RPMI-1640 medium (A-375, 1205Lu) or DMEM medium (
UACC903,
CHL-1 and
sk-mel-5) respectively supplemented with 10%
fetal bovine serum (Gibco, CA, USA) in a 37°C humidified atmosphere of 5% CO
2.
Knockdown of BANCR was induced by transfection with BANCR shRNA (Genepharma, Shanghai, China) using
Lipofectamine2000 (Invitrogen, CA, USA). The target sequences were as follows: shRNA #1:
5′-CGGAAATAGACTGCAGCAC CAA-3′; shRNA #2:
5′-CCTTTATGGATTCAACTGTAAT-3′. Ectopic expression of BANCR was achieved through pCDNA3.1-BANCR transfection using
Lipofectamine2000. Oligonucleotides for amplification of BANCR were as follows: sense:
5′- CAGGAAGGGGTGAATGAAGA-3′; antisense:
5′- CCAGTGCAGGGTAATGTGTG-3′.
Stable transfectants were selected in medium containing 600 µg/mL G418 (Invitrogen, CA, USA) and used in further assays or RNA/protein extraction.
For treatment with pharmacological inhibitors, the overnight starved cells were kept in complete medium containing 10 µM
U0126 (inhibitor of the upstream ERK1/2 activator
MEK1/2, Sigma-Aldrich, MO, USA) or 20 µM
SP600125 (JNK inhibitor, Sigma-Aldrich, MO, USA). DMSO was used as a control. Medium containing inhibitor was renewed every day.
Li R., Zhang L., Jia L., Duan Y., Li Y., Bao L, & Sha N. (2014). Long Non-Coding RNA BANCR Promotes Proliferation in Malignant Melanoma by Regulating MAPK Pathway Activation. PLoS ONE, 9(6), e100893.