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Microbiology and Immunology

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Targeting ubiquitin protein ligase E3 component N-recognin 5 in cancer cells induces a CD8+ T cell mediated immune response.

TitleTargeting ubiquitin protein ligase E3 component N-recognin 5 in cancer cells induces a CD8+ T cell mediated immune response.
Publication TypeJournal Article
Year of Publication2020
AuthorsSong M, Wang C, Wang H, Zhang T, Li J, Benezra R, Chouchane L, Sun Y-H, Cui X-G, Ma X
JournalOncoimmunology
Volume9
Issue1
Pagination1746148
Date Published2020
ISSN2162-4011
Abstract

UBR5 is a nuclear phosphoprotein of obscure functions. Clinical analyses reveal that amplifications and overexpression occur in over 20% cases of human breast cancers. Breast cancer patients carrying genetic lesions with overexpression have significantly reduced survival. Experimental work and demonstrates that UBR5, functioning as an oncoprotein, plays a profound role in breast cancer growth and metastasis. UBR5 drives tumor growth largely through paracrine interactions with the immune system, particularly through inhibiting the cytotoxic response mediated by CD8 T lymphocytes, whereas it facilitates metastasis in a tumor cell-autonomous manner via its transcriptional control of key regulators of the epithelial-mesenchymal transition, ID1 and ID3. Furthermore, simultaneous targeting of UBR5 and PD-L1 yields strong therapeutic benefit to tumor-bearing hosts. This work significantly expands our scarce understanding of the pathophysiology and immunobiology of a fundamentally important molecule and has strong implications for the development of novel immunotherapy to treat highly aggressive breast cancers that resist conventional treatment.

DOI10.1080/2162402X.2020.1746148
Alternate JournalOncoimmunology
PubMed ID32363114
PubMed Central IDPMC7185213
Grant ListP30 CA008748 / CA / NCI NIH HHS / United States

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