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人类重组型酸性成纤维细胞生长因子促分裂效应及其信号转导途径的推测

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摘要 【目的】通过比较野生型及重组型酸性成纤维细胞生长因子(waFGF,raFGF)对NIH3T3细胞促分裂活性的差别,推测其信号途径的异同,从而评价促分裂性;同时,通过检测肝素(HS)对这两种生长因子生物学活性的影响,评价其在模仿机体内环境中的作用。【方法】应用MTT法检测细胞的促分裂活性。应用Western blot和RT-PCR分别检测FGF1受体磷酸化和Fos基因表达。【结果】raEGF对细胞增殖的作用明显低于waFGF,在5-80 mg/mL范围内最为明显(P<0.001); HS均可促进两种因子对细胞的增殖作用,但raFGF+HS组明显低于waFGF+HS组(P<0.05)。waFGF通过核转位和MAPK两种途径发挥促分裂活性,而raFGF则只通过MAPK发挥促分裂性。【结论】raFGF的促分裂作用低于waFGF;肝素对这两种因子的促分裂性具有促进作用;waFGF通过核转位和MAPK两种途径发挥促分裂活性,而raFGF则只通过MAPK发挥促分裂性。
出处 《中山大学学报(医学科学版)》 CAS CSCD 北大核心 2006年第B03期35-38,共4页 Journal of Sun Yat-Sen University:Medical Sciences
基金 国家863科技基金资助项目(2002AA2Z3318)
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参考文献9

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