Laminin γ2–mediating T cell exclusion attenuates response to anti–PD-1 therapy
Open Access
- 5 February 2021
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science Advances
- Vol. 7 (6), eabc8346
- https://doi.org/10.1126/sciadv.abc8346
Abstract
PD-1/PD-L1 blockade therapies provide notable clinical benefits for patients with advanced cancers, but the factors influencing the effectiveness of the treatment remain incompletely cataloged. Here, the up-regulation of laminin γ2 (Ln-γ2) predicted the attenuated efficacy of anti–PD-1 drugs and was associated with unfavorable outcomes in patients with lung cancer or esophageal cancer. Furthermore, Ln-γ2 was transcriptionally activated by transforming growth factor–β1 (TGF-β1) secreted from cancer-associated fibroblasts via JNK/AP1 signaling, which blocked T cell infiltration into the tumor nests by altering the expression of T cell receptors. Coadministration of the TGF-β receptor inhibitor galunisertib and chemotherapy drugs provoked vigorous antitumor activity of anti–PD-1 therapy in mouse tumor models. Therefore, Ln-γ2 may represent a useful biomarker to optimize clinical decisions and predict the response of cancer patients to treatment with anti–PD-1 drugs.Keywords
Funding Information
- National Natural Science Foundation of China (81772554, 81472250 and 81472255)
- Shenzhen Fundamental Research Program (KQDT2015033117210153)
- National Science Foundation for Distinguished Young Scholars of China (81601581 and 81600606)
- the Project funded by the National Basic Research Program of China (2012CB967001)
- the China National Key Sci-Tech Special Project of Infectious Diseases (2018ZX10723204-006-005)
- National Science Foundation of Guangdong Province (2017A030313764)
- Hong Kong Research Grant Council General Research Funds (HKU/7668/11M, 767313 and 17143716)
- Hong Kong Theme-based Research Scheme Fund (T12-704/16-R)
- Hong Kong Research Grant Council Collaborative Research Funds (C7065-18GF and C7026-18GF)
- Basic and Applied Basic Research Foundation of Guangdong Province (2019A1515110660)
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