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苦瓜蛋白抗肿瘤作用及其分子机制 被引量:22

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摘要 目的探讨苦瓜蛋白对荷瘤小鼠肿瘤生长的影响和荷瘤小鼠血清基质金属蛋白酶MMP-2、MMP-9的活性及变化以及细胞因子白细胞介素-6(IL-6)及肿瘤坏死因子-α(TNF-α)表达的影响。方法将清洁级ICR雄性小鼠按体重随机分成5组,建立肝癌H22皮下移植瘤模型,分为模型组、苦瓜蛋白高、中、低剂量(100、50、25mg/kg)组及环磷酰胺组(CTX,40mg/kg),各组均ip给药,观察苦瓜蛋白对肿瘤生长的影响;分离血清,明胶酶谱法检测荷瘤小鼠血清基质金属蛋白酶MMP-2、MMP-9的活性及其变化,ELISA检测细胞因子IL-6及TNF-α表达。结果苦瓜蛋白组与模型组相比,肿瘤质量明显减轻(P<0.01),小鼠体重也较模型组小鼠轻(P<0.01);苦瓜蛋白(100、50、25mg/kg)组及CTX组抑瘤率分别为85.81%、66.89%、52.05%、65.10%;各苦瓜蛋白组与模型组相比,MMP-2、MMP-9的活性降低,酶原表达下调(P<0.01);细胞因子IL-6及TNF-α表达明显下调(P<0.01),上述作用与苦瓜蛋白剂量相关。结论苦瓜蛋白具有较强的体内抗肿瘤活性;其抗肿瘤作用可能与苦瓜蛋白抑制MMPs的活性及表达,以及调节IL-6及TNF-α等细胞因子的表达水平有关。
出处 《中草药》 CAS CSCD 北大核心 2008年第3期408-411,共4页 Chinese Traditional and Herbal Drugs
基金 浙江省中医药管理局资助课题(2002C080) 广东省教育厅自然科学研究项目(Z02041) 浙江省教育厅研究项目(2006-1779)
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参考文献10

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