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Chloroquine modulates antitumor immune response by resetting tumor-associated macrophages toward M1 phenotype

Open access
Chen, Degao, Xie, Jing, Fiskesund, Roland, Dong, Wenqian, Liang, Xiaoyu, Lv, Jiadi, Jin, Xun, Liu, Jinyan, Mo, Siqi, Zhang, Tianzhen, Cheng, Feiran, Zhou, Yabo, Zhang, Huafeng, Tang, Ke, Ma, Jingwei, Liu, Yuying, Huang, Bo·2018·Nature Communications

Abstract

Resetting tumor-associated macrophages (TAMs) is a promising strategy to ameliorate the immunosuppressive tumor microenvironment and improve innate and adaptive antitumor immunity. Here we show that chloroquine (CQ), a proven anti-malarial drug, can function as an antitumor immune modulator that switches TAMs from M2 to tumor-killing M1 phenotype. Mechanistically, CQ increases macrophage lysosomal pH, causing Ca 2+ release via the lysosomal Ca 2+ channel mucolipin-1 (Mcoln1), which induces the activation of p38 and NF-κB, thus polarizing TAMs to M1 phenotype. In parallel, the released Ca 2+ activates transcription factor EB (TFEB), which reprograms the metabolism of TAMs from oxidative phosphorylation to glycolysis. As a result, CQ-reset macrophages ameliorate tumor immune microenvironment by decreasing immunosuppressive infiltration of myeloid-derived suppressor cells and Treg cells, thus enhancing antitumor T-cell immunity. These data illuminate a previously unrecognized antitumor mechanism of CQ, suggesting a potential new macrophage-based tumor immunotherapeutic modality.

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Metadata

Authors
Chen, D., Xie, J., Fiskesund, R., Dong, W., Liang, X., Lv, J., Jin, X., Liu, J., Mo, S., Zhang, T., Cheng, F., Zhou, Y., Zhang, H., Tang, K., Ma, J., Liu, Y., & Huang, B.
Venue
Nature Communications
Published
2018-02-28
Volume
9
Issue
1
Pages
873-873
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2802078831
Cited by
489
References
64
FWCI
15.70
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Chloroquine modulates antitumor immune response by resetting tumor-associated macrophages toward M1 phenotype. https://app.cochat.ai/papers/10.1038/s41467-018-03225-9
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Chen, D., Xie, J., Fiskesund, R., Dong, W., Liang, X., Lv, J., Jin, X., Liu, J., Mo, S., Zhang, T., Cheng, F., Zhou, Y., Zhang, H., Tang, K., Ma, J., Liu, Y., & Huang, B. (2018). Chloroquine modulates antitumor immune response by resetting tumor-associated macrophages toward M1 phenotype. Nature Communications. https://doi.org/10.1038/s41467-018-03225-9

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