Objective:To explore the effects of PARP inhibitor(3-Aminobenzamide) on the apoptosis and necrosis of islet cell induced by palmitic acid. Methods:The RIN-m5F cell line was routinely cultured,and MTT method was employed to evaluate the proliferation of the RIN-m5F cell line. Moreover,Flow cytometry and TUNEL method were enrolled to analyze the apoptosis and necrosis of the RIN-m5F cell line. Results:Palmitic acid significantly inhibited the proliferation of the RIN-m5F cell line(P < 0.01).The apoptosis and necrosis of the RIN-m5F cell line treated by lower concentration of 3-Aminobenzamide and palmitic acid were obviously lower than that treated by palmitic acid alone after 24 h(P < 0.01),but the apoptosis was more significantly enhanced when the concentration of 3-Aminobenzamide higher(P < 0.01). Conclusion:Lower concentration of 3-Aminobenzamide could suppress effectively the apoptosis and necrosis of RIN-m5F cell line induced by palmitic acid,but higher concentration of 3-Aminobenzamide alternatively enhanced the apoptotic rate. It was indicated that 3-Aminobenzamide could have positive and negative effect in different concentration on the apoptosis of islet cell induced by palmitic acid and could be served as a novel therapeutic target for type 2 diabetes.
潘玉琴,曾庆娣,许向红,何帮顺,毛晓明,王书奎.PARP-1抑制剂在游离脂肪酸诱导胰岛细胞凋亡中的作用[J].南京医科大学学报(自然科学版英文版),2008,28(3):291-295326.