Renin-angiotensin inhibitors reprogram tumor immune microenvironment: A comprehensive view of the influences on anti-tumor immunity

Dora L. Vallejo-Ardila; Theodora Fifis; Louise M. Burrell; Katrina Walsh; Christopher Christophi

doi:10.18632/oncotarget.26174

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Renin-angiotensin inhibitors reprogram tumor immune microenvironment: A comprehensive view of the influences on anti-tumor immunity

Dora L. Vallejo-Ardila _, Theodora Fifis, Louise M. Burrell, Katrina Walsh and Christopher Christophi

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Oncotarget. 2018; 9:35500-35511. https://doi.org/10.18632/oncotarget.26174

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Abstract

Dora L. Vallejo-Ardila1, Theodora Fifis1, Louise M. Burrell2,3, Katrina Walsh1 and Christopher Christophi1

1Department of Surgery, Austin Health, University of Melbourne, Melbourne,VIC 3084, Australia

2Department of Medicine, Austin Health, University of Melbourne, Melbourne, VIC 3084, Australia

3Department of Cardiology, Austin Health, University of Melbourne, Melbourne, VIC 3084, Australia

Correspondence to:

Dora L. Vallejo-Ardila, email: [email protected]

Keywords: renin-angiotensin system; tumor microenvironment; anti-tumor immunity; kallikrein kinin system

Received: June 26, 2018 Accepted: September 08, 2018 Published: October 26, 2018

ABSTRACT

Renin-angiotensin system inhibitors (RASi) have shown potential anti-tumor effects that may have a significant impact in cancer therapy. The components of the renin-angiotensin system (RAS) including both, conventional and alternative axis, appear to have contradictory effects on tumor biology. The mechanisms by which RASi impair tumor growth extend beyond their function of modulating tumor vasculature. The major focus of this review is to analyze other mechanisms by which RASi reprogram the tumor immune microenvironment. These involve impairing hypoxia and acidosis within the tumor stroma, regulating inflammatory signaling pathways and oxidative stress, modulating the function of the non-cellular components and immune cells, and regulating the cross-talk between kalli krein kinin system and RAS.

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Renin-angiotensin inhibitors reprogram tumor immune microenvironment: A comprehensive view of the influences on anti-tumor immunity

Abstract