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Updated: Jul 3, 2026

Receptor Autoradiography Protocol for the Localized Visualization of Angiotensin II Receptors
Published on: June 7, 2016
The renin-angiotensin system and malignancy
Eleanor I Ager1, Jaclyn Neo, Christopher Christophi
1Department of Surgery, Austin Health, University of Melbourne, Heidelberg, Victoria 3084, Australia. eager@unimelb.edu.au
Abstract:
The renin-angiotensin system (RAS) is usually associated with its systemic action on cardiovascular homoeostasis. However, recent studies suggest that at a local tissue level, the RAS influences tumour growth. The potential of the RAS as a target for cancer treatment and the suggested underlying mechanisms of its paracrine effects are reviewed here. These include modulation of angiogenesis, cellular proliferation, immune responses and extracellular matrix formation. Knowledge of the RAS has increased dramatically in recent years with the discovery of new enzymes, peptides and feedback mechanisms. The local RAS appears to influence tumour growth and metastases and there is evidence of tissue- and tumour-specific differences. Recent experimental studies provide strong evidence that drugs that inhibit the RAS have the potential to reduce cancer risk or retard tumour growth and metastases. Manipulation of the RAS may, therefore, provide a safe and inexpensive anticancer strategy.
Insights
The local renin-angiotensin system (RAS) influences tumor growth and spread. Inhibiting the RAS may offer a safe strategy to reduce cancer risk and slow tumor progression.
Area of Science:
- Biochemistry
- Oncology
- Pharmacology
Background:
- The renin-angiotensin system (RAS) is primarily known for its systemic role in cardiovascular homeostasis.
- Emerging evidence indicates a significant local function of the RAS within tissues, impacting tumor biology.
Purpose of the Study:
- To review the role of the local RAS in influencing tumor growth and metastasis.
- To explore the potential of targeting the RAS as an anticancer strategy.
Main Methods:
- Literature review of recent studies on the local RAS and cancer.
- Analysis of proposed mechanisms of paracrine RAS effects in tumors.
Main Results:
- The local RAS modulates key cancer processes including angiogenesis, cellular proliferation, immune response, and extracellular matrix formation.
- Tissue- and tumor-specific differences in local RAS activity are observed.
- Experimental studies suggest RAS inhibitors can reduce cancer risk and slow tumor growth/metastasis.
Conclusions:
- The local RAS is implicated in tumor development and progression.
- Targeting the RAS presents a promising, potentially safe, and cost-effective anticancer therapeutic strategy.
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