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Effects of α-zearalanol on proliferation and differentiation of osteoblast and OPG/RANKL mRNA expression in vitro
Author(s): 
Pages: 1926-1929,1952
Year: Issue:  16
Journal: Chinese Journal of New Drugs

Keyword:  α-玉米赤霉醇 成骨样细胞 护骨素 碱性磷酸酶 植物雌激素;
Abstract: 目的:探讨α-玉米赤霉醇(α-zearalanol,α-ZAL)对小鼠成骨样细胞MC3T3-E1增殖、分化及护骨素(osteoprotegerin,OPG)和NF-кB受体活化配体(receptor activator of nuclear factor-кB ligand,RANKL)mRNA表达的影响。方法:传代培养小鼠成骨样细胞株MC3T3-E1,采用不同浓度的α-ZAL作用于细胞72 h后,MTT法检测细胞增殖活性,PNPP法检测碱性磷酸酶(alkaline phosphatase,ALP)活性,RT-PCR法检测ALP,OPG及RANKL mRNA的表达水平。结果:10-6~10-12mol·L-1的α-ZAL可显著抑制成骨细胞的增殖(P<0.05);显著增加ALP活性(P<0.05),但不同剂量间存在作用时间差异;并且可显著上调成骨细胞内OPG/RANKL mRNA的比值(P<0.05)。结论:α-ZAL可抑制成骨细胞的增殖、促进其分化,并可通过上调OPG/RANKL mRNA表达比值抑制破骨细胞的形成,有望作为骨质疏松症的治疗药物。
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