Effects and underlying mechanisms of curcumin on the proliferation of vascular smooth muscle cells induced by Chol:M{beta}CD
- Department of Pharmacology, School of Pharmaceutical Science, Central South University, Changsha 410078 (China)
- Division of Pharmacoproteomics, Institute of Pharmacy and Pharmacology, University of South China, Hengyang 421001 (China)
Proliferation of vascular smooth muscle cells (VSMCs) contributes to the development of various cardiovascular diseases. Curcumin, extracted from Curcumae longae, has been shown a variety of beneficial effects on human health, including anti-atherosclerosis by mechanisms poorly understood. In the present study, we attempted to investigate whether curcumin has any effect on VSMCs proliferation and the potential mechanisms involved. Our data showed curcumin concentration-dependently abrogated the proliferation of primary rat VSMCs induced by Chol:M{beta}CD. To explore the underlying cellular and molecular mechanisms, we found that curcumin was capable of restoring caveolin-1 expression which was reduced by Chol:M{beta}CD treatment. Moreover, curcumin abrogated the increment of phospho-ERK1/2 and nuclear accumulation of ERK1/2 in primary rat VSMCs induced by Chol:M{beta}CD, which led to a suppression of AP-1 promoter activity stimulated by Chol:M{beta}CD. In addition, curcumin was able to reverse cell cycle progression induced by Chol:M{beta}CD, which was further supported by its down-regulation of cyclinD1 and E2F promoter activities in the presence of Chol:M{beta}CD. Taking together, our data suggest curcumin inhibits Chol:M{beta}CD-induced VSMCs proliferation via restoring caveolin-1 expression that leads to the suppression of over-activated ERK signaling and causes cell cycle arrest at G1/S phase. These novel findings support the beneficial potential of curcumin in cardiovascular disease.
- OSTI ID:
- 21255854
- Journal Information:
- Biochemical and Biophysical Research Communications, Vol. 379, Issue 2; Other Information: DOI: 10.1016/j.bbrc.2008.12.038; PII: S0006-291X(08)02424-8; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0006-291X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Curcumin attenuates glutamate neurotoxicity in the hippocampus by suppression of ER stress-associated TXNIP/NLRP3 inflammasome activation in a manner dependent on AMPK
Static pressure drives proliferation of vascular smooth muscle cells via caveolin-1/ERK1/2 pathway