To detect miRNAs: The cellular expression level of miRNAs was determined by preparing total RNA, and then reverse transcribing 0.4 μg of it into cDNA, by means of the TransScript First‐Strand cDNA Synthesis SuperMix (Transgen); the protocol suggested by the manufacturer was followed. Primers for cDNA synthesis and real‐time PCR were purchased from Ribobio. U6 RNA acted as a control.
TransStart Green qPCR SuperMix (Transgen) was used for real‐time PCRs. The cycling conditions were 95°C for 30 sec., then 40 cycles at 95°C for 10 sec. and at 60°C for 30 sec. After 1 min. at 95°C and 1 min. at 55°C, the melt curve was determined from 55°C to 95°C, with 10 sec. at each 0.5°C interval. The Bio‐RAD IQ5 detection system was used for real‐time PCR. Data were analysed using the 2−▵▵Ct method