Targeting the RNA m6A modification for cancer immunotherapy

Molecular Cancer

Jianhua Yu¹  Shoubao Ma¹  Ping Yi²  Youcai Deng³  Xinxin Li⁴ 

[1] Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center;Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Chongqing Medical University;Institute of Materia Medica, College of Pharmacy, Army Medical University;Xi’an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University;

关键词: Tumor microenvironment;    Cancer immunotherapy;    Epigenetics;    N 6-methyladenosine;    m6A modification;    m6A regulators;   

DOI  :  10.1186/s12943-022-01558-0

来源: DOAJ

【 摘 要 】

Abstract N 6-methyladenosine (m6A) is the most abundant epigenetic modification of RNA, and its dysregulation drives aberrant transcription and translation programs that promote cancer occurrence and progression. Although defective gene regulation resulting from m6A often affects oncogenic and tumor-suppressing networks, m6A can also modulate tumor immunogenicity and immune cells involved in anti-tumor responses. Understanding this counterintuitive concept can aid the design of new drugs that target m6A to potentially improve the outcomes of cancer immunotherapies. Here, we provide an up-to-date and comprehensive overview of how m6A modifications intrinsically affect immune cells and how alterations in tumor cell m6A modifications extrinsically affect immune cell responses in the tumor microenvironment (TME). We also review strategies for modulating endogenous anti-tumor immunity and discuss the challenge of reshaping the TME. Strategies include: combining specific and efficient inhibitors against m6A regulators with immune checkpoint blockers; generating an effective programmable m6A gene-editing system that enables efficient manipulation of individual m6A sites; establishing an effective m6A modification system to enhance anti-tumor immune responses in T cells or natural killer cells; and using nanoparticles that specifically target tumor-associated macrophages (TAMs) to deliver messenger RNA or small interfering RNA of m6A-related molecules that repolarize TAMs, enabling them to remodel the TME. The goal of this review is to help the field understand how m6A modifications intrinsically and extrinsically shape immune responses in the TME so that better cancer immunotherapy can be designed and developed.

【 授权许可】

Unknown