library_construction_protocol: Total RNA was isolated using trizol.Total RNA (1 μg) was used for removing the rRNAs using NEBNext rRNA Depletion Kit (New England Biolabs, Inc., Massachusetts, USA)  following the manufacturer's instructions m6a: m6A RNA-Seq service was provided by Cloudseq Biotech Inc. (Shanghai, China). Briefly, m6A RNA immunoprecipitation was performed with the GenSeq™ m6A-MeRIP Kit (GenSeq Inc., China) by following the manufacturer's instructions. Both the input samples without immunoprecipitation and the m6A IP samples were used for RNA-seq library generation with NEBNext® Ultra II Directional RNA Library Prep Kit (New England Biolabs, Inc., USA). m6a:The library quality was evaluated with BioAnalyzer 2100 system (Agilent Technologies, Inc., USA). Library sequencing was performed on an illumina Hiseq instrument with 150bp paired-end reads. input: RNA high throughput sequencing was performed by Cloud-Seq Biotech (Shanghai, China). Briefly, total RNA was used for removing the rRNAs with NEBNext rRNA Depletion Kit (New England Biolabs, Inc., Massachusetts, USA) following the manufacturer's instructions. RNA libraries were constructed by using NEBNext® Ultra™ II Directional RNA Library Prep Kit (New England Biolabs, Inc., Massachusetts,USA) according to the manufacturer's instructions. input: Libraries were controlled for quality and quantified using the BioAnalyzer 2100 system (Agilent Technologies, Inc., USA). Library sequencing was performed on an illumina Hiseq instrument with 150bp paired end reads.