Total RNA was extracted by Trizol reagent (Invitrogen) and then was used to synthesize cDNA by Moloney murine leukemia virus reverse transcriptase (New England BioLabs) with an oligo (dT)18 primer. According to the manufacturer's protocol (Applied Biosystems), the cDNAs were amplified with primers listed in the Supplementary Table S1 using an ABI StepOne Plus system with SYBR Green Master Mix for mRNA detection [43 (link)]. For detection of mature miRNAs, cDNA synthesis was carried out by MultiScribeTM Reverse Transcriptase system and then quantitative miRNA real-time PCR was performed by the ABI StepOne Plus system (Applied Biosystems) [42 (link)].
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