与成纤维细胞共培养的肺泡II型上皮细胞的生物学特性  

Biological Characteristics of Type II Alveolar Epithelial Cells Co-cultured with Lung Fibroblasts

作　　者：卢红艳[1] 常立文[1] 汪鸿[1] 李文斌[1] 

机构地区：[1]华中科技大学同济医学院附属同济医院儿科,武汉430030

出　　处：《细胞生物学杂志》2007年第3期409-414,共6页Chinese Journal of Cell Biology

基　　金：国家自然科学基金(No.30471824);国家"十五"科技攻关计划资助项目(No.2004BA720A)

摘　　要：建立胎鼠肺泡II型上皮细胞(AECII)与肺成纤维细胞(LF)共培养模型,观察与LF共培养下AECII的生物学特性。倒置相差显微镜观察AECII形态和基本生长情况;RT-PCR和流式细胞术分别检测肺泡表面活性蛋白-C(SP-C)、水通道蛋白5(AQP5)mRNA及蛋白质表达;流式细胞术检测细胞周期及Ki67表达。结果显示,与LF共培养时,AECII能较好地保留其细胞形态,SP-CmRNA及其蛋白质表达明显增加,而AQP5mRNA及其蛋白质表达则明显减少;LF促进AECII增殖,使G2/M、S期细胞及表达Ki67+细胞的比率明显增多。结果提示,AECII与LF共培养时,能更好地保留其细胞形态、分化及增殖特性。To observe the biological characteristics of type II alveolar epithelial cells （AECⅡ） co-cultured with lung fibroblasts （LF） in vitro, a co-culture model of AECⅡ and LF from fetal rat lung was set up. The morphological change and growth of AECⅡ were observed under inverted phase contrast microscope. The SP-C and AQP5 expressions in mRNA and protein levels were observed by RT-PCR and flow cytometry. Flow cytometry was also used to detect the cell cycle and Ki67 expression of AECⅡ. When co-cultured with LF, AECII could keep its morphology well, and the SP-C expression in mRNA and protein levels increased markedly, while the AQP5 expression decreased. LF facilitated the proliferation of AECII by increased the percentage of cells in S and G2/M phases and the expression rate of Ki67. The results showed that AECⅡ can keep its morphology, differentiated and proliferation characteristics when co-cultured with LF.

关 键 词：肺泡Ⅱ型上皮细胞 肺成纤维细胞 共培养 生物学特性 

分 类 号：Q813.1[生物学—生物工程]