Transgenic and knockout models in renin-angiotensin system

Area of Science:

• Physiology
• Cardiovascular Research
• Genetics

Background:

• The renin-angiotensin system regulates blood pressure and is implicated in hypertension.
• Angiotensin peptides affect numerous tissues via angiotensin receptors.
• Genetic factors in the renin-angiotensin system are linked to cardiovascular diseases.

Purpose of the Study:

• To review recent advances in functional analysis of the renin-angiotensin system.
• To highlight the utility of transgenic approaches, including gene targeting.

Main Methods:

• Generation of transgenic mice with chronic and inducible hypertension.
• Creation of mice with targeted disruption of the angiotensinogen gene.
• Analysis of renin-angiotensin system components using molecular genetic and transgenic studies.

Main Results:

• Successfully generated transgenic mice exhibiting hypertension.
• Created angiotensinogen gene-disrupted mice with a complete loss of angiotensin signals.
• Demonstrated the role of specific genes in cardiovascular disease development.

Conclusions:

• Transgenic models provide powerful tools for studying the renin-angiotensin system.
• Gene targeting offers insights into the physiological roles of angiotensin peptides.
• Understanding these pathways is crucial for managing hypertension and cardiovascular diseases.