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GARP: A Key Target to Evaluate Tumor Immunosuppressive Microenvironment.

ABSTRACT: Glycoprotein-A repetitions predominant (GARP) is the docking receptor for latent transforming growth factor (LTGF-β) and promotes its activation. In cancer, increased GARP expression has been found in many types of cancer. GARP is expressed by regulatory T cells and platelets in the tumor microenvironment (TME) and can be also expressed by tumor cells themselves. Thus, GARP can be widely present in tumors in which it plays a major role in the production of active TGF-β, contributing to immune evasion and cancer progression via the GARP-TGF-β pathway. The objective of this review is to highlight GARP expression and function in cancer and to evaluate the potential of membrane GARP as a predictive and therapeutic follow-up biomarker that could be assessed, in real time, by molecular imaging. Moreover, as GARP can be secreted, a focus will also be made on soluble GARP as a circulating biomarker.

SUBMITTER: Bouchard A

PROVIDER: S-EPMC8470583 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature

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GARP: A Key Target to Evaluate Tumor Immunosuppressive Microenvironment.

Bouchard Alexanne A Collin Bertrand B Garrido Carmen C Bellaye Pierre-Simon PS Kohli Evelyne E

Biology 20210827 9

Glycoprotein-A repetitions predominant (GARP) is the docking receptor for latent transforming growth factor (LTGF-β) and promotes its activation. In cancer, increased GARP expression has been found in many types of cancer. GARP is expressed by regulatory T cells and platelets in the tumor microenvironment (TME) and can be also expressed by tumor cells themselves. Thus, GARP can be widely present in tumors in which it plays a major role in the production of active TGF-β, contributing to immune ev ...[more]

PMID: 34571713

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