神经生长因子促进MIA PaCa-2人胰腺癌细胞的增殖

Chinese Journal of Cancer Biotherapy(2010)

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Abstract
目的:观察神经生长因子-β(nerve growth factor-beta, NGF-β)对人胰腺癌MIA PaCa-2细胞增殖及细胞周期的影响.方法:体外培养MIA PaCa-2细胞,单独或联合给予不同浓度的NGF-β和K252a (NGF-β受体TrKA的抑制剂),应用克隆平板实验、MTT法和流式细胞术检测NGF-β和K252a对MIA PaCa-2细胞克隆形成率、增殖及细胞周期的影响.结果:NGF-β显著促进MIA PaCa-2细胞的克隆形成(P<0.05),NGF-β使MIA PaCa-2细胞增殖能力明显增强(P<0.01),K252a抑制MIA PaCa-2细胞增殖(P<0.05),NGF-β与K252a联合作用对MIA PaCa-2细胞的增殖能力无明显影响.NGF-β作用使MIA PaCa-2细胞周期阻滞于S期,K252a作用使其周期阻滞于G_0/ G_1期,两者联合作用使MIA PaCa-2细胞周期阻滞于S期.结论:NGF-β具有促进胰腺癌MIA PaCa-2细胞增殖的作用.
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Key words
Cell cycle,Nerve growth factor,Pancreatic carcinoma,Proliferation
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