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Signals controlling the expression of PDGF
1Department of Molecular Biology, University of Nijmegen, The Netherlands.
Molecular Biology Reports
|January 1, 1995
Summary
Platelet-derived growth factor (PDGF) is crucial for vertebrate development and adult tissue repair. Its expression is tightly regulated at multiple levels, influencing various pathological conditions like cancer.
Area of Science:
- Molecular Biology
- Developmental Biology
- Cell Biology
Background:
- Platelet-derived growth factor (PDGF) is a key polypeptide involved in vertebrate development, tissue repair, and wound healing.
- PDGF is implicated in pathological processes including cancer, fibrosis, and atherosclerosis.
- PDGF functions as a dimer of A and/or B chains, derived from independently expressed genes.
Purpose of the Study:
- To review the cell types expressing PDGF genes.
- To identify factors influencing PDGF gene expression.
- To elucidate the diverse regulatory mechanisms controlling PDGF expression.
Main Methods:
- Literature review of studies on PDGF gene expression.
- Analysis of regulatory mechanisms at transcriptional, post-transcriptional, and post-translational levels.
- Examination of extracellular stimuli and cell-type-specific responses.
Main Results:
- PDGF genes exhibit both coordinate and independent expression patterns across different cell types.
- Expression is modulated by numerous extracellular stimuli, with cell type determining the response.
- Regulation occurs at multiple levels, including transcription initiation, splicing, mRNA decay, translation, protein modification, and secretion.
Conclusions:
- PDGF expression is subject to extensive and varied regulation.
- Understanding these regulatory networks is vital for comprehending PDGF's role in development and disease.
- Modulation of PDGF activity can be further influenced by binding proteins post-secretion.