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Oncogene

Oncogene

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Mesenchymal stromal cells equipped by IFNα empower T cells with potent anti-tumor immunity

Published:10 February 2022 DOI: 10.1038/s41388-022-02201-4 PMID: 35145233
Tao Zhang, Yu Wang, Qing Li, Liangyu Lin, Chunliang Xu, Yueqing Xue, Mingyuan Hu, Yufang Shi, Ying Wang

Abstract

Cancer treatments have been revolutionized by the emergence of immune checkpoint blockade therapies. However, only a minority of patients with various tumor types have benefited from such treatments. New strategies focusing on the immune contexture of the tumor tissue microenvironment hold great promises. Here, we created IFNα-overexpressing mesenchymal stromal cells (IFNα-MSCs). Upon direct injection into tumors, we found that these cells are powerful in eliminating several types of tumors. Interestingly, the intra-tumoral injection of IFNα-MSCs could also induce specific anti-tumor effects on distant tumors. These IFNα-MSCs promoted tumor cells to produce CXCL10, which in turn potentiates the infiltration of CD8+ T cells in the tumor site. Furthermore, IFNα-MSCs enhanced the expression of granzyme B (GZMB) in CD8+ T cells and invigorated their cytotoxicity in a Stat3-dependent manner. Genetic ablation of Stat3 in CD8+ T cells impaired the effect of IFNα-MSCs on GZMB expression. Importantly, the combination of IFNα-MSCs and PD-L1 blockade induced an even stronger anti-tumor immunity. Therefore, IFNα-MSCs represent a novel tumor immunotherapy strategy, especially when combined with PD-L1 blockade.

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Materials
Procduct Name CAS Molecular Formula Supplier Price
Fludarabine 21679-14-1 C10H12FN5O4 557 suppliers $5.00-$12512.00
Fludarabine 21679-14-1 C10H12FN5O4 557 suppliers $5.00-$12512.00
Fludarabine 21679-14-1 C10H12FN5O4 557 suppliers $5.00-$12512.00
Fludarabine 21679-14-1 C10H12FN5O4 557 suppliers $5.00-$12512.00
Gilenia 162359-55-9 C19H33NO2 209 suppliers $7.00-$1891.00
Gilenia 162359-55-9 C19H33NO2 209 suppliers $7.00-$1891.00
Gilenia 162359-55-9 C19H33NO2 209 suppliers $7.00-$1891.00
Gilenia 162359-55-9 C19H33NO2 209 suppliers $7.00-$1891.00
Stattic 19983-44-9 C8H5NO4S 207 suppliers $8.00-$2200.00
Stattic 19983-44-9 C8H5NO4S 207 suppliers $8.00-$2200.00

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