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Apolipoprotein B mRNA editing enzyme catalytic polypeptide‐like family genes activation and regulation during tumorigenesis

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Cancer is currently viewed as a disease of evolving genomic instability and abnormal epigenomic modifications. Most solid cancers harbor oncogenic gene mutations driven by both extrinsic and intrinsic factors. Apolipoprotein… Click to show full abstract

Cancer is currently viewed as a disease of evolving genomic instability and abnormal epigenomic modifications. Most solid cancers harbor oncogenic gene mutations driven by both extrinsic and intrinsic factors. Apolipoprotein B mRNA editing catalytic polypeptide‐like family (APOBEC) enzymes have an intrinsic deamination activity to convert cytosine to uracil during RNA editing and retrovirus or retrotransposon restriction. Beyond their natural defense in innate immunity, compelling evidence showed that a subclass of APOBEC3 can cause high mutation burden in various types of cancer genomes, and high expression subtypes of APOBEC3 may contribute to drug resistance and associate with clinical outcomes. The underlying molecular mechanisms of APOBEC‐mediated hypermutation phenotype are poorly understood. In this review, we discuss the linkage of activation‐induced deaminase (AID)/APOBEC3 enzymes to tumorigenesis, highlight the dysregulatory mechanisms of APOBEC3 activities during cancer development, and propose potential approaches to targeting APOBEC3‐mediated mutagenesis for cancer interventions.

Keywords: catalytic polypeptide; like family; polypeptide like; mrna editing; apolipoprotein mrna; cancer

Journal Title: Cancer Science
Year Published: 2018

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