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Tumor-specific interendothelial adhesion mediated by FLRT2 facilitates cancer aggressiveness
- Source :
- Journal of Clinical Investigation. March 15, 2022, Vol. 132 Issue 6
- Publication Year :
- 2022
-
Abstract
- Blood vessel abnormalization alters cancer cell metabolism and promotes cancer dissemination and metastasis. However, the biological features of the abnormalized blood vessels that facilitate cancer progression and whether they can be targeted therapeutically have not been fully investigated. Here, we found that an axon guidance molecule, fibronectin leucine-rich transmembrane protein 2 (FLRT2), is expressed preferentially in abnormalized vessels of advanced colorectal cancers in humans and that its expression correlates negatively with long-term survival. Endothelial cell-specific deletion of Flrt2 in mice selectively pruned abnormalized vessels, resulting in a unique metabolic state termed 'oxygen-glucose uncoupling,' which suppressed tumor metastasis. Moreover, Flrt2 deletion caused an increase in the number of mature vessels, resulting in a significant increase in the antitumor effects of immune checkpoint blockers. Mechanistically, we found that FLRT2 forms noncanonical interendothelial adhesions that safeguard against oxidative stress through homophilic binding. Together, our results demonstrated the existence of tumor-specific interendothelial adhesions that enable abnormalized vessels to facilitate cancer aggressiveness. Targeting this type of adhesion complex could be a safe and effective therapeutic option to suppress cancer progression.<br />Introduction Development and maintenance of the body's organs require an adequate blood supply to bring oxygen and nutrients to the tissues (1). Tumor growth also depends on formation of new [...]
- Subjects :
- Oncology, Experimental
Metastasis -- Genetic aspects -- Development and progression -- Care and treatment
Endothelium -- Genetic aspects -- Health aspects
Colorectal cancer -- Genetic aspects -- Development and progression -- Care and treatment
Cell adhesion -- Research
Tumors -- Blood-vessels
Membrane proteins -- Genetic aspects -- Health aspects
Cancer -- Research
Health care industry
Subjects
Details
- Language :
- English
- ISSN :
- 00219738
- Volume :
- 132
- Issue :
- 6
- Database :
- Gale General OneFile
- Journal :
- Journal of Clinical Investigation
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.698250833
- Full Text :
- https://doi.org/10.1172/JCI153626