Total cellular RNA was isolated with TRIzol reagent (Invitrogen). Samples were treated with DNase using the RNase-free DNase Set (Qiagen) during the total RNA isolation. First-strand complementary DNA (cDNA) was synthesized using the cDNA Synthesis kit (Thermo Fisher Scientific) according to the manufacturer's instructions. ABI prism 7900-HT sequence detection system (96-well, Applied Biosystems) was used to perform quantitative real-time PCR (RT-PCR) analysis. For RT-PCR, the following primers were used:
c-FLIPL: 5'-AGAACCTGGCTGCACCTAAC-3'(forward),
5'-GAGAAGGTCAAACCGCCTCA-3'(reverse).
GAPDH: 5'-CGAGATCCCTCCAAAATCAAGTGGGG-3'(forward),
5'-ACACGTTGGCAGTGGGGACAC-3'(reverse).
Each experiment was repeated three times and the relative expression of c-FLIPL was normalized to GAPDH expression.
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