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Regulation of gene expression by cyclic GMP
Renate B Pilz1, Darren E Casteel
1Department of Medicine and Cancer Center, University of California at San Diego, 9500 Gilman Dr, La Jolla, Calif 92093-0652, USA. rpilz@ucsd.edu
Circulation Research
|December 4, 2003
Summary
Cyclic GMP (cGMP) regulates gene expression, impacting cardiovascular health by influencing vascular tone, cardiac hypertrophy, and cell growth. Understanding cGMP
Area of Science:
- Cardiovascular Biology
- Molecular Signaling
- Gene Regulation
Background:
- Cyclic GMP (cGMP) is a critical second messenger produced by nitric oxide and natriuretic peptides.
- cGMP plays a vital role in regulating vascular smooth muscle cell functions, including contractility, growth, and differentiation.
- Dysregulation of cGMP signaling is implicated in cardiovascular diseases such as hypertension, cardiac hypertrophy, and atherosclerosis.
Purpose of the Study:
- To review the multifaceted roles of cGMP in regulating gene expression.
- To elucidate the mechanisms by which cGMP influences cardiovascular (patho)physiology.
- To highlight cGMP's impact on transcriptional and posttranscriptional gene regulation.
Main Methods:
- Review of existing literature on cGMP signaling pathways.
- Analysis of cGMP's interactions with transcription factors (CREB, SRF, NF/AT).
- Examination of posttranscriptional regulation by cGMP, including HuR and guanylate cyclase mRNA stability.
Main Results:
- cGMP modulates gene expression through both positive and negative transcriptional control.
- Key transcription factors like CREB, SRF, and NF/AT are regulated by cGMP via distinct signaling cascades.
- Posttranscriptional mechanisms, such as HuR-mediated mRNA destabilization, are also influenced by cGMP.
Conclusions:
- cGMP is a central regulator of cardiovascular gene expression, affecting processes like vascular tone and cell proliferation.
- Understanding cGMP-mediated gene regulation provides insights into therapeutic strategies for cardiovascular diseases.
- cGMP's complex regulatory network, encompassing transcriptional and posttranscriptional events, is crucial for maintaining cardiovascular homeostasis.