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剑尾鱼脑细胞系的建立及细胞色素P4501A的诱导表达 被引量:3
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作者 王英英 李凯彬 +4 位作者 刘春 王庆 曾伟伟 石存斌 吴淑勤 《水产学报》 CAS CSCD 北大核心 2013年第3期337-343,共7页
为了构建剑尾鱼脑细胞系并探讨其细胞色素P4501a(CYP1A)基因的诱导效应,实验通过胰蛋白酶消化法对剑尾鱼脑组织进行体外培养,经连续继代培养,建立了可稳定传代的脑细胞系,命名为SFB。SFB最适培养液为含有15%胎牛血清(FBS)的DMEM/F-12和L... 为了构建剑尾鱼脑细胞系并探讨其细胞色素P4501a(CYP1A)基因的诱导效应,实验通过胰蛋白酶消化法对剑尾鱼脑组织进行体外培养,经连续继代培养,建立了可稳定传代的脑细胞系,命名为SFB。SFB最适培养液为含有15%胎牛血清(FBS)的DMEM/F-12和L-15等比混合培养液,培养条件为27℃,5%CO2。生长特性研究表明,第65代细胞的群体倍增时间为43.048h,显示出旺盛的生长和分裂能力。染色体分析发现,培养细胞的染色体众数为48条,SFB核型公式为2n=2st+46t,臂指数(NF)=48,与剑尾鱼一致。诱导实验表明,SFB在10-8~10-5mol/L的苯并(a)芘诱导下,CYP1A mRNA表达量显著提升,且表现出良好的剂量效应关系。脑细胞系的建立为剑尾鱼的毒理学评价研究提供了便利,也为其系统的生态毒理学应用打下基础。 展开更多
关键词 剑尾鱼 脑细胞系 细胞色素P4501A
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不同脑细胞系和脑区硒蛋白表达的生化分析 被引量:2
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作者 赵璇 宋天保 《国外医学(医学地理分册)》 CAS 2008年第4期148-150,183,共4页
硒存在于各种具有重要生物学意义的硒蛋白中。硒优先掺入脑,提示它对脑的重要性,但到目前为止对脑的硒蛋白组学还知之甚少。因此,研究者利用75硒标记、凝胶电泳分离和放射自显影技术研究了不同脑区、不同亚细胞结构及几种脑细胞系中硒... 硒存在于各种具有重要生物学意义的硒蛋白中。硒优先掺入脑,提示它对脑的重要性,但到目前为止对脑的硒蛋白组学还知之甚少。因此,研究者利用75硒标记、凝胶电泳分离和放射自显影技术研究了不同脑区、不同亚细胞结构及几种脑细胞系中硒蛋白的表达。通过对硒缺乏大鼠标记硒蛋白的定量分析发现了硒的优先结合蛋白及其分布;共区分出21种硒蛋白,其中一种新的或修饰的15kDa硒蛋白富含于小脑细胞胞质中。硒蛋白在不同脑区及同一脑区不同亚细胞结构中的表达是不同的。在某些细胞系中发现了一些细胞特异性硒蛋白。硒蛋白在单培养和共培养的内皮细胞与星形胶质细胞中分布模式有差别,这提示由其他细胞产生的中介分子可影响某一特定类型细胞中硒蛋白的表达。这种作用对硒在脑中的摄入和分布有重要意义,同时在其他组织硒代谢中也很重要。 展开更多
关键词 硒蛋白 脑细胞系 WISTAR大鼠
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鳜弹状病毒调控谷氨酰胺还原性代谢途径促进自身增殖 被引量:2
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作者 郭茜茜 付小哲 +4 位作者 梁红茹 林强 刘礼辉 牛银杰 李宁求 《中国水产科学》 CAS CSCD 北大核心 2019年第5期993-1003,共11页
为探究鳜弹状病毒(Siniperca chuatsi rhabdovirus,SCRV)复制增殖与谷氨酰胺还原性代谢(reductive glutamine metabolism,RGM)途径的相互作用关系,以鳜脑细胞系(Chinese perch brain cells,CPB)为增殖体系,采用实时荧光定量PCR技术检测... 为探究鳜弹状病毒(Siniperca chuatsi rhabdovirus,SCRV)复制增殖与谷氨酰胺还原性代谢(reductive glutamine metabolism,RGM)途径的相互作用关系,以鳜脑细胞系(Chinese perch brain cells,CPB)为增殖体系,采用实时荧光定量PCR技术检测病毒拷贝数和RGM途径关键酶mRNA表达水平变化,并通过蛋白免疫印迹方法检测RGM途径关键酶蛋白表达水平变化。结果发现,当培养基缺失谷氨酰胺时SCRV拷贝数降低了99.5%,表明谷氨酰胺是SCRV增殖所必需;而SCRV感染上调CPB细胞RGM途径关键酶的表达,其中异柠檬酸脱氢酶2(isocitrate dehydrogenase 2,IDH2)上调倍数最大,表明SCRV感染上调了细胞RGM途径中关键酶基因的表达;同时,抑制细胞RGM途径关键酶的表达导致SCRV病毒产量显著下降,表明RGM途径有利于SCRV复制增殖;进一步敲降细胞IDH2基因表达可显著抑制SCRV N蛋白表达,而过表达细胞IDH2基因可显著促进SCRV N蛋白表达,表明IDH2在病毒增殖中具有重要作用。综上所述,SCRV感染可调控CPB细胞RGM通路以满足其自身增殖,其结果可为阐明鳜弹状病毒病致病机制和抗病毒治疗策略提供新的思路。 展开更多
关键词 脑细胞系 鳜弹状病毒 谷氨酰胺还原性代谢途径
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Interactions of primary neuroepithelial progenitor and brain endothelial cells: distinct effect on neural progenitor maintenance and differentiation by soluble factors and direct contact 被引量:1
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作者 Miguel A Gama Sosa Rita De Gasperi +5 位作者 Anne B Rocher Gissel M Perez Keila Simons Daniel E Cruz Patrick R Hof Gregory A Elder 《Cell Research》 SCIE CAS CSCD 2007年第7期619-626,共8页
Neurovascular interactions are crucial for the normal development of the central nervous system. To study such interactions in primary cultures, we developed a procedure to simultaneously isolate neural progenitor and... Neurovascular interactions are crucial for the normal development of the central nervous system. To study such interactions in primary cultures, we developed a procedure to simultaneously isolate neural progenitor and endothelial cell fractions from embryonic mouse brains. Depending on the culture conditions endothelial cells were found to favor maintenance of the neuroprogenitor phenotype through the production of soluble factors, or to promote neuronal differentiation of neural progenitors through direct contact. These apparently opposing effects could reflect differential cellular interactions needed for the proper development of the brain. 展开更多
关键词 differentiation culture endothelial cells neuroepithelial cells
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Science Letters:Brain metastases of melanoma-mechanisms of attack on their defence system by engineered stem cells in the microenvironment
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作者 DIMITROV Borislav D. ATANASSOVA Penka A. RACHKOVA Mariana I. 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2007年第9期609-611,共3页
This report gives a better emphasis on the role of targeted effectors (e.g. a combination of 5-FC with CD-NSPCs as compared to the application of NSPCs alone) and how such delivery of pro-drug activating enzymes and o... This report gives a better emphasis on the role of targeted effectors (e.g. a combination of 5-FC with CD-NSPCs as compared to the application of NSPCs alone) and how such delivery of pro-drug activating enzymes and other tumor-killing substances may overcome melanocytic defence system, interact with and promote the host defence and immune response modulations not only in melanoma but, potentially, in other highly-metastatic cancers. 展开更多
关键词 MELANOMA Brain metastases Neural stem/progenitor cells (NSPCs) Cytosine deaminase
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Single-cell atlas of domestic pig cerebral cortex and hypothalamus 被引量:1
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作者 Jiacheng Zhu Fang Chen +30 位作者 Lihua Luo Weiying Wu Jinxia Dai Jixing Zhong Xiumei Lin Chaochao Chai Peiwen Ding Langchao Liang Shiyou Wang Xiangning Ding Yin Chen Haoyu Wang Jiaying Qiu Feiyue Wang Chengcheng Sun Yuying Zeng Jian Fang Xiaosen Jiang Ping Liu Gen Tang Xin Qiu Xingliang Zhang Yetian Ruan Sanjie Jiang Jiankang Li Shida Zhu Xun Xu Fang Li Zhongmin Liu Gang Cao Dongsheng Chen 《Science Bulletin》 SCIE EI CSCD 2021年第14期1448-1461,M0004,共15页
The brain of the domestic pig(Sus scrofa domesticus)has drawn considerable attention due to its high similarities to that of humans.However,the cellular compositions of the pig brain(PB)remain elusive.Here we investig... The brain of the domestic pig(Sus scrofa domesticus)has drawn considerable attention due to its high similarities to that of humans.However,the cellular compositions of the pig brain(PB)remain elusive.Here we investigated the single-nucleus transcriptomic profiles of five regions of the PB(frontal lobe,parietal lobe,temporal lobe,occipital lobe,and hypothalamus)and identified 21 cell subpopulations.The cross-species comparison of mouse and pig hypothalamus revealed the shared and specific gene expression patterns at the single-cell resolution.Furthermore,we identified cell types and molecular pathways closely associated with neurological disorders,bridging the gap between gene mutations and pathogenesis.We reported,to our knowledge,the first single-cell atlas of domestic pig cerebral cortex and hypothalamus combined with a comprehensive analysis across species,providing extensive resources for future research regarding neural science,evolutionary developmental biology,and regenerative medicine. 展开更多
关键词 Domestic pig Brain cell atlas Single-cell transcriptome Neural science
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