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生长因子对成年大鼠肺泡 型细胞增生的影响 |
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曾庆富 钱仲棐 孙去病 蒋海鹰 苏涛
【摘要】 目的 探讨EGF、TGFα、TGFβ1、PDGF、bFGF对肺泡Ⅱ型细胞增生的影响。 方法 在原代培养的成年大鼠肺泡Ⅱ型细胞中,加入不同种类、不同剂量的生长因子,作用48h,测定3H-TdR掺入、细胞数量和Ki-67标记指数。 结果 EGF、TGFα均促进肺泡Ⅱ型细胞3H-TdR掺入量、细胞数量及Ki-67阳性标记率增加,TGFα比EGF的作用更强;TGFβ1的作用与EGF、TGFα相反。EGF、TGFα和TGFβ1对肺泡Ⅱ型细胞增生的影响均呈明显量效关系。PDGF和bFGF对肺泡Ⅱ型细胞增生的影响未显示出明确的量效规律。同时或先后加入TGFα和TGFβ1,肺泡Ⅱ型细胞的增生反应不同。 结论 EGF、TGFα和TGFβ1对培养的成年大鼠肺泡Ⅱ型细胞增生有明显的调控作用;TGFα和TGFβ1共同作用于细胞时,其生物效应与加入不同因子的时序有关。 【关键词】 表皮生长因子;转化生长因子α;转化生长因子β;血小板源性生长因子;成纤维细胞生长因子;肺泡Ⅱ型细胞培养;大鼠 【中图分类号】 R349.3;R392.11 【文献标识码】 A 【文章编号】 0529-1356(2000)02-152
EFFECTS OF GROWTH FACTORS ON THE PROLIFERATION OF ADULT RAT ALVEOLAR TYPE Ⅱ CELLS
ZENG Qing-fu QIAN Zhong-fei,JIANG Hai-ying (Department of Pathology,) SUN Qu-bing (Institute of Cancer Research,) SU Tao (Radioimmunologic Centre,Hunan Medical University,Changsha 410078,China)
【Abstract】 Objective To study in vitro effects of epidermal growth factor(EGF) ,transforming growth factor α and β1(TGFα,TGFβ1),platelet derived growth factor(PDGF),and basic fibroblast growth factor(bFGF) on proliferation of alveolar type Ⅱ cells isolated from adult rat. Methods 3H-TdR incorporation,cell counting,and Ki-67 labeling index were used in this experiment. Results Both EGF and TGFα increased 3H-TdR incorporation,cell numbers,and Ki-67 labeling index as compared with the control.TGFα effect was stronger than that of EGF.The effect of TGFβ1 was contrary with EGF and TGFα.Effects of EGF,TGFα,and TGFβ1 on alveolar type Ⅱ cells were dose-dependent,but there was no consistent dose-dependent response to either PDGF or bFGF.Cooperative effects of TGFα and TGFβ1 revealed that when TGFα and TGFβ1 were added simultaneously,or TGFα was added prior to TGFβ1.TGFα did not [1] [2] 下一页 上一个医学论文: HPV16E6E7转导的卵巢癌细胞系顺铂耐药性的变化 下一个医学论文: 南昌市某证券交易所卫生状况调查
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