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Targeting the epigenetic processes to enhance antitumor immunity in small cell lung cancer

期刊

SEMINARS IN CANCER BIOLOGY
卷 86, 期 -, 页码 960-970

出版社

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.semcancer.2022.02.018

关键词

Small cell lung cancer; Epigenetics; Immunotherapy; DNA methylation; Histone modification

类别

资金

  1. National Natural Science Foundation of China [11832008]
  2. Chongqing Natural Science Foundation [cstc2021jcyj-msxmX0351]
  3. Army Medical Center's 2019 Clinical Medical Technology Innovation Capability Training Program [2019CXLCB002]

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Dysregulation of epigenetic processes plays a crucial role in promoting small cell lung cancer (SCLC), and it also affects tumor immunogenicity and immune cell functions. Current clinical trials have shown that epigenetics-targeting drugs may enhance antitumor immune response, indicating the potential of combining epigenetic agents with immunotherapy as a therapeutic approach for SCLC.
Dysregulation of the epigenetic processes, such as DNA methylation, histone modifications, and modulation of chromatin states, drives aberrant transcription that promotes initiation and progression of small cell lung cancer (SCLC). Accumulating evidence has proven crucial roles of epigenetic machinery in modulating immune cell functions and antitumor immune response. Epigenetics-targeting drugs such as DNA methyltransferase inhibitors, histone deacetylase inhibitors, and histone methyltransferase inhibitors involved in preclinical and clinical trials may trigger antitumor immunity. Herein, we summarize the impact of epigenetic processes on tumor immunogenicity and antitumor immune cell functions in SCLC. Furthermore, we review current clinical trials of epigenetic therapy against SCLC and the mechanisms of epigenetic inhibitors to boost antitumor immunity. Eventually, we discuss the opportunities of developing therapeutic regimens combining epigenetic agents with immunotherapy for SCLC.

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