期刊
ANNALS OF THE NEW YORK ACADEMY OF SCIENCES
卷 1417, 期 1, 页码 104-115出版社
WILEY
DOI: 10.1111/nyas.13625
关键词
regulatory T cells; PD-1; PD-L1; CTLA-4; OX40
Cancer immunotherapy involving blockade of immune checkpoint molecules, such as CTLA-4 and PD-1, has shown remarkable clinical success across several types of malignancies. However, a fraction of patients experience disease progression after treatment; thus, exploring resistant mechanisms for immune checkpoint inhibitors and improving their treatment outcome with additional modalities are of great importance. CD4(+) regulatory T (T-reg) cells characterized by expression of the master regulatory transcription factor FOXP3 are a highly immune-suppressive subset of CD4(+) T cells that maintain immune homeostasis. Several preclinical and clinical studies suggest that T-reg cells hamper immune surveillance against cancer in healthy individuals, prevent the development of effective antitumor immunity in tumor-bearing patients, and promote tumor progression. Therefore, targeting T-reg cells should be crucial to improving the treatment outcomes of cancer immunotherapy. Several clinical studies directly or indirectly targeting T-reg cells in combination with immune checkpoint inhibitors are ongoing or being planned. Understanding the characteristics and roles of T-reg cells in cancer settings could make disease-specific T-reg-targeted therapy more efficacious and reduce the incidence of immune-related adverse effects mediated by T-reg cell inhibition.
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