分别制备经1 Gy C离子辐照和未经辐照人肝癌HepG2细胞的总蛋白样品, 采用固相pH梯度双向凝胶电泳技术进行蛋白分离, 用ImageMaster 2D双向电泳凝胶图像分析软件分析数字化图谱. 结果显示, 差异表达的蛋白质点为17个, 其中1个仅在未经C离子辐照的HepG2细胞中表达, 8个蛋白质点在辐照后的细胞中表达上调, 8个蛋白质点在辐照后的细胞中表达下调. 建立了重复性较好和分辨率较高的分离HepG2细胞总蛋白的双向电泳技术. 实验结果表明, C离子辐照HepG2细胞后其蛋白质组发生了改变.
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