目的：研究连花清瘟胶囊抗肿瘤的药理作用。方法应用MTT法检测连花清瘟胶囊对乳腺癌 MCF－7细胞增殖的抑制程度，AO／EB双荧光染色法检测细胞凋亡形态，DNA琼脂糖凝胶电泳观察细胞 DNA 片段。结果在浓度为200～2667μg· mL －1内...目的：研究连花清瘟胶囊抗肿瘤的药理作用。方法应用MTT法检测连花清瘟胶囊对乳腺癌 MCF－7细胞增殖的抑制程度，AO／EB双荧光染色法检测细胞凋亡形态，DNA琼脂糖凝胶电泳观察细胞 DNA 片段。结果在浓度为200～2667μg· mL －1内，连花清瘟胶囊对乳腺癌MCF－7细胞的增殖有显著的抑制作用，其抑制作用随药物浓度的增加而增强，对MCF－7细胞增殖抑制率由10．50％增加到43．83％，与对照组比较呈显著差异性（P＜0．05vs正常组）。连花清瘟胶囊明显影响乳腺癌MCF－7细胞的染色质，发生固缩等凋亡形态的变化及细胞凋亡的 DNA梯带形状。结论连花清瘟胶囊具有抑制乳腺癌细胞增殖和诱导其凋亡的抗肿瘤的药理作用。展开更多
Somatic embryogenesis(SE) plays a vital role in genetic transformation and massive propagation of important agronomical and economical crops.Here,we conducted a systematic assessment of the morphological,cytochemical,...Somatic embryogenesis(SE) plays a vital role in genetic transformation and massive propagation of important agronomical and economical crops.Here,we conducted a systematic assessment of the morphological,cytochemical,and cytogenetical characteristics of six culture strains with various embryogenic/regenerative potential during SE process in cotton.Results indicated that the six cell culture strains had stable ploidy levels,and did not reveal any relationship between the cytogenetic state and their morphogenetic potential.Moreover,the six culture strains were compared via double staining with Evans blue and Acetocarmine to efficiently distinguish embryogenic and non-embryogenic cells and determine the embryogenic nature of the calli.In addition,the kind of auxins added in medium affected not only growth property,color,size of cell clumps but also ploidy level and regeneration ability.By combining analysis of morphological,cytochemical,and cytogenetical characteristics of the cell cultures,we are able to obtain and maintain homogeneous cell population with high morphogenic and regeneration ability and establish efficient somatic embryogenesis and regeneration system from short-term cell cultures in upland cotton,which highlight the application of biotechnological approaches in crop breeding,and above all,to better understand totipotency of cells in higher plants.展开更多
文摘目的：研究连花清瘟胶囊抗肿瘤的药理作用。方法应用MTT法检测连花清瘟胶囊对乳腺癌 MCF－7细胞增殖的抑制程度，AO／EB双荧光染色法检测细胞凋亡形态，DNA琼脂糖凝胶电泳观察细胞 DNA 片段。结果在浓度为200～2667μg· mL －1内，连花清瘟胶囊对乳腺癌MCF－7细胞的增殖有显著的抑制作用，其抑制作用随药物浓度的增加而增强，对MCF－7细胞增殖抑制率由10．50％增加到43．83％，与对照组比较呈显著差异性（P＜0．05vs正常组）。连花清瘟胶囊明显影响乳腺癌MCF－7细胞的染色质，发生固缩等凋亡形态的变化及细胞凋亡的 DNA梯带形状。结论连花清瘟胶囊具有抑制乳腺癌细胞增殖和诱导其凋亡的抗肿瘤的药理作用。
基金supported by the National Key R&D Program of China (2016YFD0100306)the National Natural Science Fundation of China (31401428)+1 种基金the Fok Ying-Tong Education Foundation of China (151024)the Taishan Scholar Talent Project from China (tsqn20161018)
文摘Somatic embryogenesis(SE) plays a vital role in genetic transformation and massive propagation of important agronomical and economical crops.Here,we conducted a systematic assessment of the morphological,cytochemical,and cytogenetical characteristics of six culture strains with various embryogenic/regenerative potential during SE process in cotton.Results indicated that the six cell culture strains had stable ploidy levels,and did not reveal any relationship between the cytogenetic state and their morphogenetic potential.Moreover,the six culture strains were compared via double staining with Evans blue and Acetocarmine to efficiently distinguish embryogenic and non-embryogenic cells and determine the embryogenic nature of the calli.In addition,the kind of auxins added in medium affected not only growth property,color,size of cell clumps but also ploidy level and regeneration ability.By combining analysis of morphological,cytochemical,and cytogenetical characteristics of the cell cultures,we are able to obtain and maintain homogeneous cell population with high morphogenic and regeneration ability and establish efficient somatic embryogenesis and regeneration system from short-term cell cultures in upland cotton,which highlight the application of biotechnological approaches in crop breeding,and above all,to better understand totipotency of cells in higher plants.
