|Gene expression profiles in response to the activation of adrenoceptors in A7R5 aortic smooth muscle cells|
|Wang, YY; Hou, R; Li, P; Li, JL; Yan, J; Yin, F; Han, C; Zhang, YY|
|关键词||adrenoceptors DNA microarray gene expression profile proliferation vascular smooth muscle cells|
|刊名||CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY|
|WOS标题词||Science & Technology|
|类目[WOS]||Pharmacology & Pharmacy ; Physiology|
|研究领域[WOS]||Pharmacology & Pharmacy ; Physiology|
|关键词[WOS]||RAT AORTA ; STIMULATION ; PATTERNS ; SUBTYPES|
1. Vascular adrenoceptors play an important role in vascular physiology and pathophysiology, such as hypertension, atherosclerosis and restenosis after angioplasty. To define the changes in the ene expression in vascular smooth muscle cells in response to the activation of alpha(1)- or beta-adrenoceptors, a DNA microarray was used.
2. First, the existence of alpha(1)- and beta-adrenoceptors in A7r5 aortic smooth muscle cells was confirmed by radioligand binding. Then, the inhibitory effects of phenylephrine (an alpha(1)-adrenoceptor agonist) and isoproterenol (a beta-adrenoceptor agonist) on the proliferation of A7r5 cells were determined by [H-3]-thymidine incorporation.
3. The A7r5 cells were treated with 10 mumol/L phenylephrine or 1 mumol/L isoproterenol for 24 h and changes in gene expression were detected with the DNA microarray. Only 14 and 20 genes were identified after treatment of cells with phenylephrine and isoproterenol, respectively, and most genes displayed decreased expression. The changed genes could be grouped into five major functional categories: cell signalling/ communication, cell structure/motility, cell/organism defence, gene/protein expression and metabolism. The gene expression profile in response to the activation of alpha(1)-adrenoceptors was very different from that following activation of beta-adrenoceptors. Interestingly, many phenylephrine-responsive genes were associated with metabolism, whereas many isoproterenol-responsive genes encoded cell signalling and structure proteins. This means that adrenoceptors may modulate multiple aspects of biological function in vascular smooth muscle cells.
4. Collectively, the activation of both alpha(1)-adrenoceptors (with phenylephrine) and beta-adrenoceptors (with isoproterenol) inhibited the proliferation of A7r5 cells, but microarray data revealed that the mechanisms may be different: the activation of alpha(1)-adrenoceptors could induce the expression of metabolic genes, resulting in the inhibition of proliferation, whereas activation of beta-adrenoceptors altered the expression of genes that encoded cell signalling and structure proteins to inhibit cell proliferation.
|作者单位||1.Minist Educ, Key Lab Mol Cardiovasc Sci, Beijing, Peoples R China|
2.Peking Univ, Hosp 3, Inst Vasc Med, Beijing 100083, Peoples R China
|Wang, YY,Hou, R,Li, P,et al. Gene expression profiles in response to the activation of adrenoceptors in A7R5 aortic smooth muscle cells[J]. CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY,2004,31(9):602-607.|
|APA||Wang, YY.,Hou, R.,Li, P.,Li, JL.,Yan, J.,...&Zhang, YY.(2004).Gene expression profiles in response to the activation of adrenoceptors in A7R5 aortic smooth muscle cells.CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY,31(9),602-607.|
|MLA||Wang, YY,et al."Gene expression profiles in response to the activation of adrenoceptors in A7R5 aortic smooth muscle cells".CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY 31.9(2004):602-607.|