[ Objective] To isolate fetal fibroblasts from Tibetan yellow cattle and thus to provide the ideal biological material for cloning and cellular biology of animals inhabiting in the Tibet Plateau. [ Method] The fibrobl...[ Objective] To isolate fetal fibroblasts from Tibetan yellow cattle and thus to provide the ideal biological material for cloning and cellular biology of animals inhabiting in the Tibet Plateau. [ Method] The fibroblast cells were isolated from tissues of Tibetan yellow fetus by explant culture method. The subculture, morphology and dynamics were observed. [ Result] The fetal fibroblasts of Tibetan yellow cattle had typical morphology of fibroblast calls. The isolated cells had three growth stages including retention period (0 -2 d), logarithmic phase (2 -7 d) and platform phase (7 -8 d). Its doubling time was 60 h. [ Conclusion] Fetal fibroblasts of Tibetan yellow cattle have been successfully cultured.展开更多
将胎儿成纤维细胞悬浮于不同的冷冻保护液中 ,在不同的温度下进行冷冻保存试验。结果显示 ,当保护液中含有 90 0 m L / L胎牛血清 (FBS)时 ,- 196℃下保存的山羊胎儿成纤维细胞解冻后的细胞贴壁率高于- 80℃ ,且前者贴壁细胞增殖也较后...将胎儿成纤维细胞悬浮于不同的冷冻保护液中 ,在不同的温度下进行冷冻保存试验。结果显示 ,当保护液中含有 90 0 m L / L胎牛血清 (FBS)时 ,- 196℃下保存的山羊胎儿成纤维细胞解冻后的细胞贴壁率高于- 80℃ ,且前者贴壁细胞增殖也较后者快 ,二者间差异显著 ;而在 - 2 0℃条件下只有一小部分细胞能够存活 ,与前两者相比差异极显著 ,说明 - 2 0℃不适合冷冻胎儿细胞。冷冻保护液中含有 10 0 m L / L二甲基亚砜 (DMSO)的保护效果明显好于 5 0 m L / L DMSO,二者间差异显著。用组织块法培养的细胞 ,在两种培养基 DMEM和 M199中添加 10 0 m L / L FBS和 2 mm ol/ L 2 -巯基乙醇 (2 - Me) ,其组织块成活率及细胞生长速度均高于单纯添加 10 0 m L / LFBS,同时证明 DMEM和 M199都能用于胎儿成纤维细胞的体外培养。以 DMEM培养液为基础 ,分别添加 2mm ol/ L 2 - Me,5 m L / L FBS,10 0 m L / L FBS和 2 m mol/ L 2 - Me+10 0 m L / L FBS对山羊胎儿成纤维细胞进行体外培养 ,结果显示 ,细胞在 10 0 m L / L FBS和 2 mm ol/ L 2 - Me+10 0 m L / L FBS培养液中生长迅速 ,两者间无明显差异 ,2 - Me的存在促进了细胞的增殖 ;两者都与添加 2 m mol/ L 2 - Me组存在显著差异 ;添加 2 m mol/ L 2 - Me和 5m L / L展开更多
目的探讨人AB血浆培养外周血造血干/祖细胞(HSCs/HPCs)向成熟红细胞分化的可行性。方法将外周血HSCs/HPCs分别在添加5%胎牛血清(FBS)(FBS组)、3%FBS+2%人AB血浆(FBS+AB血浆组)和8%人AB血浆(AB血浆组)中的培养条件下诱导分化为成熟红细胞...目的探讨人AB血浆培养外周血造血干/祖细胞(HSCs/HPCs)向成熟红细胞分化的可行性。方法将外周血HSCs/HPCs分别在添加5%胎牛血清(FBS)(FBS组)、3%FBS+2%人AB血浆(FBS+AB血浆组)和8%人AB血浆(AB血浆组)中的培养条件下诱导分化为成熟红细胞,按照1×10;/mL密度接种在24孔培养板中,2 mL/孔,观察3种培养条件下细胞生长增殖曲线和细胞形态学(细胞涂片,May-Giemsa染色,显微镜下观察细胞形态及细胞核变化)变化情况,流式细胞仪检测细胞表面红系终末分化标志分子糖化血红蛋白A(GPA)、带3蛋白(Band3)和整合素α4(α4-integrin)表达情况,以及红系晚期细胞脱核情况;比较3种培养条件对外周血HSCs/HPCs向成熟红细胞分化的影响。结果 AB血浆组、FBS组、FBS+AB血浆组的细胞生长增殖倍数分别为2 573±116 vs 2 514±246 vs 2 539±119(P>0.05);3组细胞形态学变化相似:随着培养时间延长,HSCs/HPCs从原幼红细胞向嗜碱性幼红细胞、多染幼红细胞、正染幼红细胞分化,至21 d时,几乎全部分化为脱核的红细胞;流式检测红系终末分化及脱核:血型糖蛋白A(GPA)表达及脱核率(%)分别为97.17±1.91 vs 94.95±1.61 vs 96.15±1.38、85.1±3.26 vs 86.93±5.96 vs 86.5±3.36(P>0.05).结论人AB血浆体外培养外周HSCs/HPCs向成熟红细胞分化实验达到了与胎牛血清培养相似的结果。展开更多
基金supported by National Natural Science Foundation of China (31040077)University Teachers Team Construction Program of"211 Project"(SZRC-211-01)Regional Natural Science Foundation of Tibet Science and Technology Department (2010-17-02)
文摘[ Objective] To isolate fetal fibroblasts from Tibetan yellow cattle and thus to provide the ideal biological material for cloning and cellular biology of animals inhabiting in the Tibet Plateau. [ Method] The fibroblast cells were isolated from tissues of Tibetan yellow fetus by explant culture method. The subculture, morphology and dynamics were observed. [ Result] The fetal fibroblasts of Tibetan yellow cattle had typical morphology of fibroblast calls. The isolated cells had three growth stages including retention period (0 -2 d), logarithmic phase (2 -7 d) and platform phase (7 -8 d). Its doubling time was 60 h. [ Conclusion] Fetal fibroblasts of Tibetan yellow cattle have been successfully cultured.
文摘将胎儿成纤维细胞悬浮于不同的冷冻保护液中 ,在不同的温度下进行冷冻保存试验。结果显示 ,当保护液中含有 90 0 m L / L胎牛血清 (FBS)时 ,- 196℃下保存的山羊胎儿成纤维细胞解冻后的细胞贴壁率高于- 80℃ ,且前者贴壁细胞增殖也较后者快 ,二者间差异显著 ;而在 - 2 0℃条件下只有一小部分细胞能够存活 ,与前两者相比差异极显著 ,说明 - 2 0℃不适合冷冻胎儿细胞。冷冻保护液中含有 10 0 m L / L二甲基亚砜 (DMSO)的保护效果明显好于 5 0 m L / L DMSO,二者间差异显著。用组织块法培养的细胞 ,在两种培养基 DMEM和 M199中添加 10 0 m L / L FBS和 2 mm ol/ L 2 -巯基乙醇 (2 - Me) ,其组织块成活率及细胞生长速度均高于单纯添加 10 0 m L / LFBS,同时证明 DMEM和 M199都能用于胎儿成纤维细胞的体外培养。以 DMEM培养液为基础 ,分别添加 2mm ol/ L 2 - Me,5 m L / L FBS,10 0 m L / L FBS和 2 m mol/ L 2 - Me+10 0 m L / L FBS对山羊胎儿成纤维细胞进行体外培养 ,结果显示 ,细胞在 10 0 m L / L FBS和 2 mm ol/ L 2 - Me+10 0 m L / L FBS培养液中生长迅速 ,两者间无明显差异 ,2 - Me的存在促进了细胞的增殖 ;两者都与添加 2 m mol/ L 2 - Me组存在显著差异 ;添加 2 m mol/ L 2 - Me和 5m L / L
文摘目的探讨人AB血浆培养外周血造血干/祖细胞(HSCs/HPCs)向成熟红细胞分化的可行性。方法将外周血HSCs/HPCs分别在添加5%胎牛血清(FBS)(FBS组)、3%FBS+2%人AB血浆(FBS+AB血浆组)和8%人AB血浆(AB血浆组)中的培养条件下诱导分化为成熟红细胞,按照1×10;/mL密度接种在24孔培养板中,2 mL/孔,观察3种培养条件下细胞生长增殖曲线和细胞形态学(细胞涂片,May-Giemsa染色,显微镜下观察细胞形态及细胞核变化)变化情况,流式细胞仪检测细胞表面红系终末分化标志分子糖化血红蛋白A(GPA)、带3蛋白(Band3)和整合素α4(α4-integrin)表达情况,以及红系晚期细胞脱核情况;比较3种培养条件对外周血HSCs/HPCs向成熟红细胞分化的影响。结果 AB血浆组、FBS组、FBS+AB血浆组的细胞生长增殖倍数分别为2 573±116 vs 2 514±246 vs 2 539±119(P>0.05);3组细胞形态学变化相似:随着培养时间延长,HSCs/HPCs从原幼红细胞向嗜碱性幼红细胞、多染幼红细胞、正染幼红细胞分化,至21 d时,几乎全部分化为脱核的红细胞;流式检测红系终末分化及脱核:血型糖蛋白A(GPA)表达及脱核率(%)分别为97.17±1.91 vs 94.95±1.61 vs 96.15±1.38、85.1±3.26 vs 86.93±5.96 vs 86.5±3.36(P>0.05).结论人AB血浆体外培养外周HSCs/HPCs向成熟红细胞分化实验达到了与胎牛血清培养相似的结果。