Abstract
Lessons from viral hijacks of cells and cancer biology suggest that the activation of G protein-coupled receptors (GPCRs) often results in the modulation of various transcription factors and cofactors. Since drugs acting on GPCRs represent a significant portion of therapeutic agents currently in use, it is important to understand the actions of GPCRs on gene expression. GPCRs and their associated heterotrimeric G proteins are known to regulate gene transcription through complex signaling networks. The G protein-mediated signaling cascades have been extensively studied and accumulating evidence indicates that the four subfamilies of G proteins may utilize both common and unique pathways for transcriptional regulation. This review aims to provide a contemporary account of our understanding on the regulation of transcription factors by GPCRs, with a special emphasis on specific regulations of transcription factors such as STAT3 and NF-κB by individual G protein subfamilies. Functional impacts of the signal integration between different pathways and the contributions by other GPCR-interacting molecules will also be briefly discussed.
Keywords: GPCR, heterotrimeric G proteins, transcriptional regulation, signal integration
Current Molecular Pharmacology
Title: Regulation of Transcription Factors by Heterotrimeric G Proteins
Volume: 2
Author(s): M. K.C. Ho, Y. Su, W. W.S. Yeung and Y. H. Wong
Affiliation:
Keywords: GPCR, heterotrimeric G proteins, transcriptional regulation, signal integration
Abstract: Lessons from viral hijacks of cells and cancer biology suggest that the activation of G protein-coupled receptors (GPCRs) often results in the modulation of various transcription factors and cofactors. Since drugs acting on GPCRs represent a significant portion of therapeutic agents currently in use, it is important to understand the actions of GPCRs on gene expression. GPCRs and their associated heterotrimeric G proteins are known to regulate gene transcription through complex signaling networks. The G protein-mediated signaling cascades have been extensively studied and accumulating evidence indicates that the four subfamilies of G proteins may utilize both common and unique pathways for transcriptional regulation. This review aims to provide a contemporary account of our understanding on the regulation of transcription factors by GPCRs, with a special emphasis on specific regulations of transcription factors such as STAT3 and NF-κB by individual G protein subfamilies. Functional impacts of the signal integration between different pathways and the contributions by other GPCR-interacting molecules will also be briefly discussed.
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Cite this article as:
Ho K.C. M., Su Y., Yeung W.S. W. and Wong H. Y., Regulation of Transcription Factors by Heterotrimeric G Proteins, Current Molecular Pharmacology 2009; 2 (1) . https://dx.doi.org/10.2174/1874467210902010019
DOI https://dx.doi.org/10.2174/1874467210902010019 |
Print ISSN 1874-4672 |
Publisher Name Bentham Science Publisher |
Online ISSN 1874-4702 |
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