目的原代乳鼠心肌细胞为终末期的分化细胞,常规的质粒转染效率低下。受体相互作用蛋白140(receptor-interacting protein 140,RIP140)目的基因长达3.5kb,为研究RIP140蛋白在非增殖型的心肌细胞表达情况,需要寻找一种更好的过表达系统。...目的原代乳鼠心肌细胞为终末期的分化细胞,常规的质粒转染效率低下。受体相互作用蛋白140(receptor-interacting protein 140,RIP140)目的基因长达3.5kb,为研究RIP140蛋白在非增殖型的心肌细胞表达情况,需要寻找一种更好的过表达系统。方法 RIP140基因全长序列克隆入p Ad Track-CMV穿梭载体中,在BJ5183细菌中与腺病毒骨架载体p Ad Easy^(-1)进行同源重组。经酶切及测序验证的阳性重组克隆转染入AD293细胞中进行病毒的包装与扩增。采用TCID50法测定病毒滴度、CCK-8试剂盒分析腺病毒对心肌细胞活力的影响。采用Western blot鉴定RIP140蛋白在心肌细胞中的表达情况。结果测序分析结果表明RIP140的全长序列正确克隆到Ad Easy TM腺病毒系统中。AdRIP140、Ad-GFP的病毒滴度分别为1011.3和1011.7PFU·m L^(-1)。腺病毒感染复数在200以下时,对心肌细胞活力无影响。绿色荧光及Western blot分析显示Ad-RIP140感染心肌细胞12 h,RIP140表达明显增加(P<0.05)。结论成功构建了RIP140全长序列的腺病毒载体,并使其蛋白有效表达于心肌细胞中,这将有助于后续进行RIP140在心肌细胞中的作用的研究。展开更多
OBJECTIVE: To investigate the combinatorial effects of conception and governor vessel electroacupuncture(EA) and human umbilical cord blood-derived mesenchymal stem cells(HUCB-MSCs) on pathomorphologic lesion and cell...OBJECTIVE: To investigate the combinatorial effects of conception and governor vessel electroacupuncture(EA) and human umbilical cord blood-derived mesenchymal stem cells(HUCB-MSCs) on pathomorphologic lesion and cellular apoptosis in rats with cerebral ischemia/reperfusion. METHODS: With the HUCB-MSCs isolated, cultured and identified and the models of cerebral ischemia-reperfusion established, the HUCB-MSCs of passage three were intracranially transplanted and the EA at conception and governor vessels was applied. The pathomorphologic lesion by hematoxylin-eosin staining and the cellular apoptosis by terminal deoxynucleotidyl transferase-mediated nick-end labeling method around the ischemic focus were observed. RESULTS: The cultured adherent HUCB-MSCs exhibited a spindle shape and expressed MSC-specific markers, with the cell purity and proliferation rate significantly increasing after the primary passage. HE staining showed that there were no pathological changes observed in the sham surgery group. However, in the PBS transplantation group, degeneration and necrosis of a great number of nerve cells were seen. In both the HUCB-MSCs transplantation group and the HUCB-MSCs transplantation + EA group, reparative changes of the pathomorphism of the tissue were found. Both combination treatment and simple MSCs treatment were able to improve the pathomorphorlogic lesion following cerebral ischemia and reduce the abnormal TUNEL-positive numbers, with former better than latter. CONCLUSION: HUCB-MSCs improve pathological lesions and inhibit the cellular apoptosis around the cerebral ischemic area. EA at conception and governor vessels also improve pathological lesion and inhibit the cellular apoptosis in rats treated with HUCB-MSCs transplantation, which effects were superior to that of simple HUCB-MSCs transplantation.展开更多
文摘目的原代乳鼠心肌细胞为终末期的分化细胞,常规的质粒转染效率低下。受体相互作用蛋白140(receptor-interacting protein 140,RIP140)目的基因长达3.5kb,为研究RIP140蛋白在非增殖型的心肌细胞表达情况,需要寻找一种更好的过表达系统。方法 RIP140基因全长序列克隆入p Ad Track-CMV穿梭载体中,在BJ5183细菌中与腺病毒骨架载体p Ad Easy^(-1)进行同源重组。经酶切及测序验证的阳性重组克隆转染入AD293细胞中进行病毒的包装与扩增。采用TCID50法测定病毒滴度、CCK-8试剂盒分析腺病毒对心肌细胞活力的影响。采用Western blot鉴定RIP140蛋白在心肌细胞中的表达情况。结果测序分析结果表明RIP140的全长序列正确克隆到Ad Easy TM腺病毒系统中。AdRIP140、Ad-GFP的病毒滴度分别为1011.3和1011.7PFU·m L^(-1)。腺病毒感染复数在200以下时,对心肌细胞活力无影响。绿色荧光及Western blot分析显示Ad-RIP140感染心肌细胞12 h,RIP140表达明显增加(P<0.05)。结论成功构建了RIP140全长序列的腺病毒载体,并使其蛋白有效表达于心肌细胞中,这将有助于后续进行RIP140在心肌细胞中的作用的研究。
基金Supported by the National Natural Science Foundation of China(No.81072877)Shenzhen Municipal Science and Technology Research Development and Funds and Platform Construction Plan Key Laboratory Program(No.CXB201111250113A)Shenzhen Municipal Science and Technology Plan Project(No.201203149)
文摘OBJECTIVE: To investigate the combinatorial effects of conception and governor vessel electroacupuncture(EA) and human umbilical cord blood-derived mesenchymal stem cells(HUCB-MSCs) on pathomorphologic lesion and cellular apoptosis in rats with cerebral ischemia/reperfusion. METHODS: With the HUCB-MSCs isolated, cultured and identified and the models of cerebral ischemia-reperfusion established, the HUCB-MSCs of passage three were intracranially transplanted and the EA at conception and governor vessels was applied. The pathomorphologic lesion by hematoxylin-eosin staining and the cellular apoptosis by terminal deoxynucleotidyl transferase-mediated nick-end labeling method around the ischemic focus were observed. RESULTS: The cultured adherent HUCB-MSCs exhibited a spindle shape and expressed MSC-specific markers, with the cell purity and proliferation rate significantly increasing after the primary passage. HE staining showed that there were no pathological changes observed in the sham surgery group. However, in the PBS transplantation group, degeneration and necrosis of a great number of nerve cells were seen. In both the HUCB-MSCs transplantation group and the HUCB-MSCs transplantation + EA group, reparative changes of the pathomorphism of the tissue were found. Both combination treatment and simple MSCs treatment were able to improve the pathomorphorlogic lesion following cerebral ischemia and reduce the abnormal TUNEL-positive numbers, with former better than latter. CONCLUSION: HUCB-MSCs improve pathological lesions and inhibit the cellular apoptosis around the cerebral ischemic area. EA at conception and governor vessels also improve pathological lesion and inhibit the cellular apoptosis in rats treated with HUCB-MSCs transplantation, which effects were superior to that of simple HUCB-MSCs transplantation.
