NDLI: Gene expression profile of butyrate-inhibited vascular smooth muscle cell proliferation

Content Provider	Springer Nature Link
Author	Ranganna, Kasturi Yousefipour, Zivar Yatsu, Frank M. Milton, Shirlette G. Hayes, Barbara E.
Copyright Year	2003
Abstract	Excessive proliferation of vascular smooth muscle cells (VSMCs) is a critical element in the development of several vascular pathologies, particularly in atherosclerosis and in restenosis due to angioplasty. We have shown that butyrate, a powerful antiproliferative agent, a strong promoter of cell differentiation and an inducer of apoptosis inhibits VSMC proliferation at physiological concentrations with no cytotoxicity. In the present study, we have used cDNA array technology to unravel the molecular basis of the antiproliferative effect of butyrate on VSMCs. To assess the involvement of gene expression in butyrate-inhibited VSMC proliferation, proliferating VSMCs were exposed to 5 mmol/1 butyrate 1 through 5 days after plating. Expression profiles of 1,176 genes representing different functional classes in untreated control and butyrate treated VSMCs were compared. A total of 111 genes exhibiting moderate (2.0–5.0 fold∥ to strong (> 5.0 fold) differential expression were identified. Analysis of these genes indicates that butyrate treatment mainly alters the expression of four different functional classes of genes, which include: 43 genes implicated in cell growth and differentiation, 13 genes related to stress response, 11 genes associated with vascular function and 8 genes normally present in neuronal cells. Examination of differentially expressed cell growth and differentiation related genes indicate that butyrate-inhibited VSMC proliferation appears to involve down-regulation of genes that encode several positive regulators of cell growth and up-regulation of some negative regulators of growth or differentiation inducers. Some of the down-regulated genes include proliferating cell nuclear antigen (PCNA), retinoblastoma susceptibility related protein p130 (pRb), cell division control protein 2 homolog (cdc2), cyclin B1, cell division control protein 20 homolog (p55cdc), high mobility group (HMG) 1 and 2 and several others. Whereas the up-regulated genes include cyclin D1, p21WAF1, p14INK4B/p15INK5B, Clusterin, inhibitor of DNA binding 1 (ID1) and others. On the other hand, butyrate-responsive stress-related genes include some of the members of heat shock protein (HSP), glutathione-s-transferase (GST), and glutathione peroxidase (GSH-PXs) and cytochrome P450 (CYP) families. Additionally, several genes related to vascular and neuronal function are also responsive to butyrate treatment. Although involvement of genes that encode stress response, vascular and neuronal functional proteins in cell proliferation is not clear, cDNA expression array data appear to suggest that they may play a role in the regulation of cell proliferation. However, cDNA expression profiles indicate that butyrate-inhibited VSMC proliferation involves combined action of a proportionally large number of both positive and negative regulators of growth, which ultimately causes growth arrest of VSMCs. Furthermore, these butyrate-induced differential gene expression changes are not only consistent with the antiproliferative effect of butyrate but are also in agreement with the roles that these gene products play in cell proliferation.
Starting Page	21
Ending Page	36
Page Count	16
File Format	PDF
ISSN	03008177
Journal	Molecular and Cellular Biochemistry
Volume Number	254
Issue Number	1-2
e-ISSN	15734919
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2003-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cardiology Medical Biochemistry Oncology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Cell Biology Medicine Clinical Biochemistry Molecular Biology

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