YTH Domain Proteins: A Family of m6A Readers in Cancer Progression

N 6 -methyladenosine (m 6 A) is the most abundant internal modification in eukaryotic messenger RNAs (mRNAs). m 6 A RNA methylation is involved in all stages of RNA life cycle, from RNA processing, nuclear output, translation regulation to RNA degradation, indicating that m 6 A has various functions affecting RNA metabolism positively or negatively. Reading proteins are vital in regulating the translation and stability of m 6 A mRNAs positively or negatively. Recent studies have enhanced the understanding of the molecular mechanism of the YT521-B homology (YTH) domain family and the modification of m 6 A. This study aimed to review the specific mechanisms, functions, and interactions of the YTH domain protein family. It also discussed future research directions, thus providing new ideas for the clinical diagnosis and targeted therapy of cancer.