期刊
INTERNATIONAL IMMUNOPHARMACOLOGY
卷 6, 期 5, 页码 854-861出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.intimp.2005.11.014
关键词
Raphanus sativus crude extract; isothiocyanates; 4-(methylthio)-3-butenyl isothiocyanate; allyl isothiocayanate; benzyl isothiocyanate; phenethyl isothiocyanate; VSMC; cell cycle arrest; DNA synthesis; apoptosis
Mu (Raphanus sativus, Korean White Radish) crude extract (Mu-CE) has been studied for its anti-proliferative activity on mouse aortic smooth muscle cells. The abnormal growth of vascular smooth muscle cells (VSMC) is a prominent feature of vascular disease, including atherosclerosis, restenosis after angioplasty. We examined the mechanisms of the action of Mu-CE on VSMC proliferation. The viability of VSMC decreased to 35% at 24 It of treatment with Mu-CE. Treatment of Mu-CE showed potent inhibitory effects on the DNA synthesis of cultured VSMC. In addition, Mu-CE induced apoptosis using cell death ELISA assay. These inhibitory effects were associated with G, cell cycle arrest. Treatment of Mu-CE, which induced a cell-cycle arrest in G(1)-phase, induced down-regulation of cyclins and CDKs and up-regulation of the CDK inhibitor p21 expression, whereas upregulation of p27 by Mu-CE was not observed. Then, total isothiocyanates (ITC) including four different 4-(Methylthio)-3-butenyl isothiocyanate (MTBITC), allyl isothiocayanate (AITC), benzyl isothiocyanate (BITC), and phenethyl isothiocyanate (PEITC) was isolated from n-hexane extracts of Mu. When the VSMC were treated with ITC, the cell viability was significantly decreased. These findings indicate the efficacy of Mu-CE in inhibiting cell proliferation, G(1)- to S-phase cell-cycle progress on VSMC. (c) 2006 Elsevier B.V. All rights reserved.
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