AIM： To study the effect of senescence marker protein 30（SMP30） on the proliferation and apoptosis of human lens epithelial cell（HLEC） SRA01/04.METHODS： SMP30 overexpression（OE） and knock down（KD） type cell ...AIM： To study the effect of senescence marker protein 30（SMP30） on the proliferation and apoptosis of human lens epithelial cell（HLEC） SRA01/04.METHODS： SMP30 overexpression（OE） and knock down（KD） type cell lines were cultivated by using two groups regucalcin（RGN; SMP30） lentiviral vectors（LVRGN, LV-RGN-RNAi） and the respective negative control virus infect SRA01/04 cells. Western blot and real-time quantitative polymerase chain reaction（q-PCR） analysis were used to determine RGN overexpression and knock down efficiency. We use cell counting kit-8（CCK8） assay to measure cell viability and 5-bromodeoxyuridine（Brd U） assay to test cell proliferation. Cell cycle was measured by PI FACS assay and cell apoptosis was tested by Annexin V-APC assay through flow cytometry. We use Western blot to measure the content of caspase-3 in SRA01/04.RESULTS： We used PCR and Western blot techniques to determine the successful transfection of SMP30 OE and KD SRA01/04 cell lines. By CCK8, Brdu and PI FACS cell cycle assay, it was found that the SMP30 OE group promoted cell proliferation（P〈0.05） compared with the control group, and the KD group inhibited cell proliferation（P〈0.05）. The results of Annexin V-APC signal staining detection indicated that compared with respective control group, the cell apoptosis rate was higher in KD group（P〈0.05） but lower in OE group（P〈0.01）. The expression of caspase-3 was down-regulated in OE group through Western blot assay and up-regulated in KD group compared with respective control group. CONCLUSION： Proliferation of SRA01/04 was promoted by SMP30 OE and apoptosis was suppressed. Increasing the expression of SMP30 may protect HLEC SRA01/04 against apoptosis in cataract.展开更多
目的观察高表达的衰老标记蛋白30(SMP30)对过氧化氢(H_2O_2)所致的正常人皮肤成纤维细胞(NHSF)衰老表型的影响。方法实验分为转染H_2O_2处理组(NHSF+SMP30+H_2O_2组)、转空载体H_2O_2处理组(NHSF+空载体+H_2O_2组)和转空载体组(NHSF+空...目的观察高表达的衰老标记蛋白30(SMP30)对过氧化氢(H_2O_2)所致的正常人皮肤成纤维细胞(NHSF)衰老表型的影响。方法实验分为转染H_2O_2处理组(NHSF+SMP30+H_2O_2组)、转空载体H_2O_2处理组(NHSF+空载体+H_2O_2组)和转空载体组(NHSF+空载体组)。NHSF细胞分别转染人SMP30 c DNA或空载体pc DNA3.1(分别命名为NHSF+SMP30、NHSF+空载体),然后150μmol·L-1H_2O_2处理2 h。应用反转录-聚合酶链反应(RT-PCR)和蛋白印迹法分析SMP30的表达,显微镜观察细胞形态,并检测与衰老相关的β-半乳糖苷酶(SA-β-gal)、细胞活性氧(ROS)及超氧化物歧化酶(SOD)的活性。结果人SMP30 c DNA明显上调了NHSF中SMP30的表达。NHSF+空载体+H_2O_2组SMP30 mRNA和蛋白表达水平明显低于NHSF+空载体组(P<0.05);NHSF+SMP30+H_2O_2组SMP30 mRNA和蛋白表达水平高于NHSF+空载体+H_2O_2组(P<0.05)。NHSF+空载体+H_2O_2组较NHSF+空载体组SA-β-gal染色率明显增高(P<0.05);NHSF+SMP30+H_2O_2组较NHSF+空载体+H_2O_2组SA-β-gal染色率明显下降(P<0.05)。NHSF+空载体+H_2O_2组较NHSF+空载体组ROS活性明显增高(P<0.05),而SOD水平明显降低(P<0.05);NHSF+SMP30+H_2O_2组较NHSF+空载体+H_2O_2组ROS活性明显下降,而SOD水平明显上升(P<0.05)。结论高表达的SMP30能够抑制细胞SA-β-gal和ROS的表达,同时上调SOD的活性。展开更多
目的探讨人肝癌相关抗原衰老标记蛋白30(SMP30)对人外周血树突状细胞(DC)成熟的影响。方法用Ficoll密度梯度离心法从健康成人外周血中分离获得外周血单个核细胞,用粒细胞-巨噬细胞集落刺激因子和白细胞介素4诱导生成DC,用流式细胞术对D...目的探讨人肝癌相关抗原衰老标记蛋白30(SMP30)对人外周血树突状细胞(DC)成熟的影响。方法用Ficoll密度梯度离心法从健康成人外周血中分离获得外周血单个核细胞,用粒细胞-巨噬细胞集落刺激因子和白细胞介素4诱导生成DC,用流式细胞术对DC进行鉴定。将DC随机分为SMP30慢病毒组、空载慢病毒组,分别用人肝癌相关抗原SMP30重组慢病毒和空载慢病毒进行体外转染,另设空白对照组。荧光显微镜下观察各组绿色荧光蛋白表达情况,以判断DC的转染效率; Western blotting法检测各组SMP30蛋白表达; ELISA法检测各组白细胞介素12(IL-12)、干扰素γ(INF-γ)分泌情况;流式细胞术检测各组表面共刺激分子CD80和CD86表达。结果荧光显微镜下观察到SMP30慢病毒组和空载慢病毒组成功表达绿色荧光蛋白,而空白对照组DC无绿色荧光蛋白表达。与空载慢病毒组、空白对照组比较,SMP30慢病毒组SMP30表达高,IL-12、INF-γ分泌量高,CD80、CD86表达率高(P均<0. 05)。结论体外转染人肝癌相关抗原SMP30慢病毒可促进人外周血DC的成熟。展开更多
基金Supported by the National Natural Science Foundation of China(No.81360146)
文摘AIM： To study the effect of senescence marker protein 30（SMP30） on the proliferation and apoptosis of human lens epithelial cell（HLEC） SRA01/04.METHODS： SMP30 overexpression（OE） and knock down（KD） type cell lines were cultivated by using two groups regucalcin（RGN; SMP30） lentiviral vectors（LVRGN, LV-RGN-RNAi） and the respective negative control virus infect SRA01/04 cells. Western blot and real-time quantitative polymerase chain reaction（q-PCR） analysis were used to determine RGN overexpression and knock down efficiency. We use cell counting kit-8（CCK8） assay to measure cell viability and 5-bromodeoxyuridine（Brd U） assay to test cell proliferation. Cell cycle was measured by PI FACS assay and cell apoptosis was tested by Annexin V-APC assay through flow cytometry. We use Western blot to measure the content of caspase-3 in SRA01/04.RESULTS： We used PCR and Western blot techniques to determine the successful transfection of SMP30 OE and KD SRA01/04 cell lines. By CCK8, Brdu and PI FACS cell cycle assay, it was found that the SMP30 OE group promoted cell proliferation（P〈0.05） compared with the control group, and the KD group inhibited cell proliferation（P〈0.05）. The results of Annexin V-APC signal staining detection indicated that compared with respective control group, the cell apoptosis rate was higher in KD group（P〈0.05） but lower in OE group（P〈0.01）. The expression of caspase-3 was down-regulated in OE group through Western blot assay and up-regulated in KD group compared with respective control group. CONCLUSION： Proliferation of SRA01/04 was promoted by SMP30 OE and apoptosis was suppressed. Increasing the expression of SMP30 may protect HLEC SRA01/04 against apoptosis in cataract.
文摘目的观察高表达的衰老标记蛋白30(SMP30)对过氧化氢(H_2O_2)所致的正常人皮肤成纤维细胞(NHSF)衰老表型的影响。方法实验分为转染H_2O_2处理组(NHSF+SMP30+H_2O_2组)、转空载体H_2O_2处理组(NHSF+空载体+H_2O_2组)和转空载体组(NHSF+空载体组)。NHSF细胞分别转染人SMP30 c DNA或空载体pc DNA3.1(分别命名为NHSF+SMP30、NHSF+空载体),然后150μmol·L-1H_2O_2处理2 h。应用反转录-聚合酶链反应(RT-PCR)和蛋白印迹法分析SMP30的表达,显微镜观察细胞形态,并检测与衰老相关的β-半乳糖苷酶(SA-β-gal)、细胞活性氧(ROS)及超氧化物歧化酶(SOD)的活性。结果人SMP30 c DNA明显上调了NHSF中SMP30的表达。NHSF+空载体+H_2O_2组SMP30 mRNA和蛋白表达水平明显低于NHSF+空载体组(P<0.05);NHSF+SMP30+H_2O_2组SMP30 mRNA和蛋白表达水平高于NHSF+空载体+H_2O_2组(P<0.05)。NHSF+空载体+H_2O_2组较NHSF+空载体组SA-β-gal染色率明显增高(P<0.05);NHSF+SMP30+H_2O_2组较NHSF+空载体+H_2O_2组SA-β-gal染色率明显下降(P<0.05)。NHSF+空载体+H_2O_2组较NHSF+空载体组ROS活性明显增高(P<0.05),而SOD水平明显降低(P<0.05);NHSF+SMP30+H_2O_2组较NHSF+空载体+H_2O_2组ROS活性明显下降,而SOD水平明显上升(P<0.05)。结论高表达的SMP30能够抑制细胞SA-β-gal和ROS的表达,同时上调SOD的活性。
文摘目的探讨人肝癌相关抗原衰老标记蛋白30(SMP30)对人外周血树突状细胞(DC)成熟的影响。方法用Ficoll密度梯度离心法从健康成人外周血中分离获得外周血单个核细胞,用粒细胞-巨噬细胞集落刺激因子和白细胞介素4诱导生成DC,用流式细胞术对DC进行鉴定。将DC随机分为SMP30慢病毒组、空载慢病毒组,分别用人肝癌相关抗原SMP30重组慢病毒和空载慢病毒进行体外转染,另设空白对照组。荧光显微镜下观察各组绿色荧光蛋白表达情况,以判断DC的转染效率; Western blotting法检测各组SMP30蛋白表达; ELISA法检测各组白细胞介素12(IL-12)、干扰素γ(INF-γ)分泌情况;流式细胞术检测各组表面共刺激分子CD80和CD86表达。结果荧光显微镜下观察到SMP30慢病毒组和空载慢病毒组成功表达绿色荧光蛋白,而空白对照组DC无绿色荧光蛋白表达。与空载慢病毒组、空白对照组比较,SMP30慢病毒组SMP30表达高,IL-12、INF-γ分泌量高,CD80、CD86表达率高(P均<0. 05)。结论体外转染人肝癌相关抗原SMP30慢病毒可促进人外周血DC的成熟。
