AIM： To evaluate anti-angiogenic effect of tenomodulin （TNMD） and ranibizumab on cell proliferation and capillary- like morphogenesis of vascular endothelial cells under the stimulation of vascular endothelial grow...AIM： To evaluate anti-angiogenic effect of tenomodulin （TNMD） and ranibizumab on cell proliferation and capillary- like morphogenesis of vascular endothelial cells under the stimulation of vascular endothelial growth factor （VEGF） in vitro. METHODS： The effects of TNMD and ranibizumab on VEGF-induced proliferation of human umbilical vein endothelial cells （HUVECs） were evaluated by MTT assay, and the effects of TNMD and ranibizumab on capillary- like structures formed by HUVECs under the stimulation of VEGF were examined in culture. Capillary-like morphogenesis of HUVECs was quantitatively evaluated, and total lengths of tube-like structures per field were measured in a masked way. RESULTS： HUVECs with both ranibizumab and TNMD protein showed MTT reduction in VEGF-stimulated cell proliferation as expected, while MTT absorbance in the HUVECs with TNMD was significantly declined than that with ranibizumab （P〈O.01）. The capillary-like structures formed by HUVECs were markedly impaired by the presence of both TNMD and ranibizumab in the culture medium. The total length of the capillary-like structures per field was significantly shorter in the medium with TNMD than that of ranibizumab （P〈0.01）. The inhibitory effect of TNMD on tube formation in vitro angiogenesis was significantly stronger than that of ranibizumab. CONCLUSION： TNMD may have stronger inhibitory effect than ranibizumab on in vitro angiogenesis.展开更多
The effects of hypoxic endothelial cell conditioned medium (HECCM) on proliferation and collagen synthesis of cultured porcine pulmonary arterial smooth muscle cells (PASMCs) were studied by 3H-thymidine (3H-TdR) and ...The effects of hypoxic endothelial cell conditioned medium (HECCM) on proliferation and collagen synthesis of cultured porcine pulmonary arterial smooth muscle cells (PASMCs) were studied by 3H-thymidine (3H-TdR) and 3H-proline incorporations, image analysis for determination of DNA content and colorimetric assay using MTT, and the inhibitory effects of radix salviae miltiorrhizae (RSM) on them were also investigated. The results showed that HECCM could induce enhancement of the enzymatic activity of mitochondria, increase of the nucleic DNA content and increases of the 3H-TdR and 3H-proline incorporations in PASMCs. The 3H-proline incorporation in PASMCs cultured in HECCM was 1.83 times as much as that cultured in normoxic endothelial cell conditioned medium (NECCM). Compared with the control, Chinese herb medicine RSM could inhibit the proliferation of PASMCs cultured in HECCM and decrease the 3H-prolinc incorporation in PASMCs cultured in both HECCM and NECCM (P< 0.001). However, RSM had no ef fects on the nucleic DNA content and 3H-TdR incorporation into DNA of PASMCs cultured in NECCM. It suggests that hypoxia may stimulate the endothelia to synthesize and secrete some cytokines which can stimulate the proliferation and the synthesis of collagen of PASMCs and RSM can inhibit this process.展开更多
目的:研究白花蛇舌草总黄酮(FHD)对人肝癌细胞SMMC-7721,BEL-7402的体外抑制作用,对小鼠移植性肝癌H22的体内抑制作用和对其增殖周期、凋亡、免疫功能的影响.方法:MTT法评价FHD在0,5,10,50,100 mg/L浓度下,于24,48,72h对人肝癌细胞SMMC-...目的:研究白花蛇舌草总黄酮(FHD)对人肝癌细胞SMMC-7721,BEL-7402的体外抑制作用,对小鼠移植性肝癌H22的体内抑制作用和对其增殖周期、凋亡、免疫功能的影响.方法:MTT法评价FHD在0,5,10,50,100 mg/L浓度下,于24,48,72h对人肝癌细胞SMMC-7721,BEL-7402的抑制率变化.昆明♂小鼠60只,随机取10只为正常对照组,余接种H22瘤株,随机分为模型对照组、5-FU阳性对照组(30 mg/kg)和高中低剂量FHD给药组(剂量分别为25,50,100 mg/kg),腹腔给药10d后,比较各组瘤质量抑制率、H22细胞周期分布及凋亡率,比较各组荷瘤小鼠的胸腺指数(×10^(-3))、脾脏指数(×10^(-3))、脾淋巴细胞转化率和血清TNF-α、IFN-γ水平(ng/L).结果:FHD对SMMC-7721、BEL-7402细胞具有体外抑制作用,且呈剂量依赖性和时间依赖性(P<0.05).与模型对照组相比,25,50,100 mg/kg FHD显著抑制小鼠移植性H22肿瘤(P<0.01),使G_0/G_1期H22细胞比例逐渐增加(30.36%±5.72%,32.83%±6.67%,39.67%±8.01% vs 25.62%±4.36%,P<0.05或P<0.01),G_2/M期细胞比例逐渐下降(7.65%±2.32%,6.33%±3.43%,2.22%±0.98% vs 11.13%±2.77%,P<0.05或P<0.01),促进肿瘤细胞凋亡(2.41%±0.42%,2.22%±0.33%,2.07%±0.40% vs 1.47%±0.66%,P<0.01),降低荷瘤小鼠脾脏指数(51.43±8.31,47.43±7.89,48.64±9.35 vs 67.63±7.44,P<0.01),升高胸腺指数(33.36±4.09,40.35±5.79,34.57±6.56 vs 22.43±4.52,P<0.01)和脾淋巴细胞转化率(10.83%±3.75%,11.33%±5.04%,13.58%±4.62% vs 9.35%±2.02%,P<0.05),并提高血清TNF-α(257.56±42.29,386.36±25.97,364.52±23.62 vs 101.43±24.72,P<0.01)、IFN-γ水平(355.83±35.74,392.31±25.17,357.38±34.82 vs 172.35±29.02,P<0.01).结论:FHD在体外、体内均具有抑制肝癌细胞的作用,此作用与阻滞肿瘤细胞增殖周期、促进肿瘤细胞凋亡、调节机体免疫环境有关.展开更多
基金Supported by the Cooperation Fund for Clinic and Scientific Research of Capital Medical University(No.13JL13)
文摘AIM： To evaluate anti-angiogenic effect of tenomodulin （TNMD） and ranibizumab on cell proliferation and capillary- like morphogenesis of vascular endothelial cells under the stimulation of vascular endothelial growth factor （VEGF） in vitro. METHODS： The effects of TNMD and ranibizumab on VEGF-induced proliferation of human umbilical vein endothelial cells （HUVECs） were evaluated by MTT assay, and the effects of TNMD and ranibizumab on capillary- like structures formed by HUVECs under the stimulation of VEGF were examined in culture. Capillary-like morphogenesis of HUVECs was quantitatively evaluated, and total lengths of tube-like structures per field were measured in a masked way. RESULTS： HUVECs with both ranibizumab and TNMD protein showed MTT reduction in VEGF-stimulated cell proliferation as expected, while MTT absorbance in the HUVECs with TNMD was significantly declined than that with ranibizumab （P〈O.01）. The capillary-like structures formed by HUVECs were markedly impaired by the presence of both TNMD and ranibizumab in the culture medium. The total length of the capillary-like structures per field was significantly shorter in the medium with TNMD than that of ranibizumab （P〈0.01）. The inhibitory effect of TNMD on tube formation in vitro angiogenesis was significantly stronger than that of ranibizumab. CONCLUSION： TNMD may have stronger inhibitory effect than ranibizumab on in vitro angiogenesis.
文摘The effects of hypoxic endothelial cell conditioned medium (HECCM) on proliferation and collagen synthesis of cultured porcine pulmonary arterial smooth muscle cells (PASMCs) were studied by 3H-thymidine (3H-TdR) and 3H-proline incorporations, image analysis for determination of DNA content and colorimetric assay using MTT, and the inhibitory effects of radix salviae miltiorrhizae (RSM) on them were also investigated. The results showed that HECCM could induce enhancement of the enzymatic activity of mitochondria, increase of the nucleic DNA content and increases of the 3H-TdR and 3H-proline incorporations in PASMCs. The 3H-proline incorporation in PASMCs cultured in HECCM was 1.83 times as much as that cultured in normoxic endothelial cell conditioned medium (NECCM). Compared with the control, Chinese herb medicine RSM could inhibit the proliferation of PASMCs cultured in HECCM and decrease the 3H-prolinc incorporation in PASMCs cultured in both HECCM and NECCM (P< 0.001). However, RSM had no ef fects on the nucleic DNA content and 3H-TdR incorporation into DNA of PASMCs cultured in NECCM. It suggests that hypoxia may stimulate the endothelia to synthesize and secrete some cytokines which can stimulate the proliferation and the synthesis of collagen of PASMCs and RSM can inhibit this process.
文摘目的:研究白花蛇舌草总黄酮(FHD)对人肝癌细胞SMMC-7721,BEL-7402的体外抑制作用,对小鼠移植性肝癌H22的体内抑制作用和对其增殖周期、凋亡、免疫功能的影响.方法:MTT法评价FHD在0,5,10,50,100 mg/L浓度下,于24,48,72h对人肝癌细胞SMMC-7721,BEL-7402的抑制率变化.昆明♂小鼠60只,随机取10只为正常对照组,余接种H22瘤株,随机分为模型对照组、5-FU阳性对照组(30 mg/kg)和高中低剂量FHD给药组(剂量分别为25,50,100 mg/kg),腹腔给药10d后,比较各组瘤质量抑制率、H22细胞周期分布及凋亡率,比较各组荷瘤小鼠的胸腺指数(×10^(-3))、脾脏指数(×10^(-3))、脾淋巴细胞转化率和血清TNF-α、IFN-γ水平(ng/L).结果:FHD对SMMC-7721、BEL-7402细胞具有体外抑制作用,且呈剂量依赖性和时间依赖性(P<0.05).与模型对照组相比,25,50,100 mg/kg FHD显著抑制小鼠移植性H22肿瘤(P<0.01),使G_0/G_1期H22细胞比例逐渐增加(30.36%±5.72%,32.83%±6.67%,39.67%±8.01% vs 25.62%±4.36%,P<0.05或P<0.01),G_2/M期细胞比例逐渐下降(7.65%±2.32%,6.33%±3.43%,2.22%±0.98% vs 11.13%±2.77%,P<0.05或P<0.01),促进肿瘤细胞凋亡(2.41%±0.42%,2.22%±0.33%,2.07%±0.40% vs 1.47%±0.66%,P<0.01),降低荷瘤小鼠脾脏指数(51.43±8.31,47.43±7.89,48.64±9.35 vs 67.63±7.44,P<0.01),升高胸腺指数(33.36±4.09,40.35±5.79,34.57±6.56 vs 22.43±4.52,P<0.01)和脾淋巴细胞转化率(10.83%±3.75%,11.33%±5.04%,13.58%±4.62% vs 9.35%±2.02%,P<0.05),并提高血清TNF-α(257.56±42.29,386.36±25.97,364.52±23.62 vs 101.43±24.72,P<0.01)、IFN-γ水平(355.83±35.74,392.31±25.17,357.38±34.82 vs 172.35±29.02,P<0.01).结论:FHD在体外、体内均具有抑制肝癌细胞的作用,此作用与阻滞肿瘤细胞增殖周期、促进肿瘤细胞凋亡、调节机体免疫环境有关.
基金National Science Foundation of China (30470553 30530270+11 种基金 30670669 30770700)973 program (2005CB522803 2007CB947703)863 program (O7013810 2006AA02A116)the Major State Basic Research of China (2003CB716600)Chinese-Finnish International Collaboration Project-neuro (30621130076)Program of CASC (KSCX1-YW-R-33 YZ200737)National Key Technologies R&D ProgramYunnan Science and Technique Program (2006PT08-2)
