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Cited by 348

The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.

The role of exosomal PD-L1 in tumor progression and immunotherapy

Open access
Xie, Feiting, Xu, Mengxue, Lu, Jian, Mao, Lingxiang, Wang, Shengjun·2019·Molecular Cancer

Abstract

Programmed death ligand 1 (PD-L1), a type I transmembrane protein, binds to its receptor PD-1 to suppress the activation of T cells, thereby maintaining immunological homeostasis. In contrast, tumor cells highly express PD-L1, which binds to receptor PD-1 expressed on activated T cells, leading to immune escape. Anti-PD-1/PD-L1 immune checkpoint therapy blocks the binding of PD-1/PD-L1 to reinvigorate the exhausted T cells, thereby inhibiting tumor growth. Exosomes are biologically active lipid-bilayer nanovesicles secreted by various cell types that mediate intercellular signal communication. Numerous studies have shown that tumor cells are able to promote tumor epithelial-mesenchymal transition, angiogenesis, and immune escape by releasing exosomes. Recent studies imply that tumor-derived exosomes could carry PD-L1 in the same membrane topology as the cell surface, thereby resisting immune checkpoint therapy. In this review, we mainly discuss the role of exosomes in the regulation of tumor progression and the potential resistance mechanism to immunotherapy via exosomal PD-L1. In addition, we propose that exosomal PD-L1 may have the potential to be a target to overcome resistance to anti-PD-1/PD-L1 antibody therapy.

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Metadata

Authors
Xie, F., Xu, M., Lu, J., Mao, L., & Wang, S.
Venue
Molecular Cancer
Published
2019-10-23
Volume
18
Issue
1
Pages
146-146
ISSN
1476-4598 (ISSN-L)
OpenAlex
W2981768007
Cited by
348
References
10
FWCI
12.46
Type
journal article
Language
en
Open access
gold

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