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PMID: 8262057 Published · ppublish English Comparative Study Journal Article Research Support, Non-U.S. Gov't

A nuclear pathway for alpha 1-adrenergic receptor signaling in cardiac cells.

The EMBO journal ·Vol. 12 ·No. 13 ·1993-12-15 ·Pages 5131-9

Ardati A, Nemer M

Abstract

alpha 1-Adrenergic agonists and antagonists constitute an important class of therapeutic agents commonly used for the treatment of various cardiovascular diseases like hypertension, congestive heart failure and supraventricular tachycardia. At the heart level, activation of alpha 1-adrenergic receptors is associated with marked morphological and genetic changes. These include enhancement of contractility, myocardial growth (hypertrophy) and release of the heart major secretory product, atrial natriuretic factor (ANF). However, the signal transduction pathways which link extracellular activation of the receptors to cellular and genetic changes are not well understood. Using primary cardiocyte cultures from neonate rat hearts, an alpha 1-adrenergic regulatory sequence has been identified in the 5' flanking region of the ANF gene. This sequence, which is necessary and sufficient for transcriptional activation in response to the alpha 1-specific agonist phenylephrine, interacts with novel zinc-dependent proteins which are induced by alpha 1-adrenergic stimulation. Consistent with a conserved regulatory mechanism, the alpha 1 response element is highly conserved between rodent, bovine and human ANF genes, and is also present in the promoter region of other alpha 1-responsive cardiac genes. The identification of a nuclear pathway for alpha 1-receptor signaling will be useful for elucidating the intracellular effectors of alpha 1-adrenergic receptors.

Related Genes
ANF
MeSH Terms
Animals Atrial Natriuretic Factor/genetics Base Sequence Consensus Sequence Gene Expression Regulation/drug effects Heart/physiology Molecular Sequence Data Myocardium/cytology Nuclear Proteins/metabolism Phenylephrine/pharmacology Promoter Regions, Genetic RNA, Messenger/genetics Rats Rats, Sprague-Dawley Receptors, Adrenergic, alpha/physiology Sequence Alignment Sequence Homology, Nucleic Acid Signal Transduction Zinc Fingers
Chemicals
Nuclear Proteins RNA, Messenger Receptors, Adrenergic, alpha Phenylephrine Atrial Natriuretic Factor
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Ardati A
Institut de Recherches Cliniques de Montréal, Canada.
Nemer M
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42 references, click to expand
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Article Info
Journal
The EMBO journal
Abbr.
EMBO J
ISSN
0261-4189
Published
1993-12-15
Pages
5131-9
Language
English
Region
England
NLM ID
8208664
PMCID
PMC413775
Subset
IM
External Links
PubMed source PMC Full Text View journal details
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