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Updated: Jun 24, 2026

Receptor Autoradiography Protocol for the Localized Visualization of Angiotensin II Receptors
Published on: June 7, 2016
[Angiotensin (1-7) receptor]
Mitsuru Ohishi1, Hiromi Rakugi
1Department of Geriatric Medicine, Graduate School of Medicine, Osaka University.
Abstract:
Mas, which was protooncogene, first detected in vivo by tumorigenic properties originating from rearrangement of its 5'-flanking region was identified as a functional receptor for angiotensin (1-7) and provide a clear molecular basis for the physiological actions of this biologically active peptide. Angiotensin (1-7) is mainly produced from angiotensin II by angiotensin converting enzyme 2, homologue of angiotensin converting enzyme. Many investigations suggested angiotensin (1-7) via Mas receptor might play protective effects on hypertensive complications, such as renal dysfunction and cardiovascular diseases, competed with angiotensin II and its type 1 receptor.
Insights
The Mas receptor, a protooncogene, acts as the functional receptor for angiotensin (1-7), revealing its role in cardiovascular and renal protection against hypertension.
Area of Science:
- Molecular biology
- Cardiovascular research
- Nephrology
Background:
- The Mas receptor, initially identified as a protooncogene, has a known role in cellular processes.
- Angiotensin (1-7) is a biologically active peptide derived from angiotensin II.
- Angiotensin converting enzyme 2 (ACE2) is crucial for producing angiotensin (1-7).
Purpose of the Study:
- To identify the functional receptor for angiotensin (1-7).
- To elucidate the molecular basis for angiotensin (1-7)'s physiological actions.
- To explore the protective role of the angiotensin (1-7)/Mas receptor axis in hypertensive complications.
Main Methods:
- In vivo detection of Mas protooncogene.
- Biochemical assays to identify receptor-ligand interactions.
- Comparative studies with angiotensin II and its type 1 receptor.
Main Results:
- Mas was identified as the functional receptor for angiotensin (1-7).
- This finding provides a molecular basis for angiotensin (1-7)'s actions.
- Evidence suggests angiotensin (1-7)/Mas receptor signaling may counteract angiotensin II/type 1 receptor effects.
Conclusions:
- The Mas receptor mediates the physiological effects of angiotensin (1-7).
- This axis plays a potential protective role in hypertension-related renal and cardiovascular diseases.
- The angiotensin (1-7)/Mas receptor pathway offers a target for managing hypertensive complications.
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