目的:探讨聚(ADP-核糖)聚合酶家族成员3[Poly(ADP-Ribose)Polymerase Family Member 3,PARP3]在脂多糖(Lipopolysaccharide,LPS)诱导的小胶质细胞BV2炎症及凋亡中的作用机制,为视神经损伤的临床治疗提供潜在靶点。方法:通过LPS刺激BV2...目的:探讨聚(ADP-核糖)聚合酶家族成员3[Poly(ADP-Ribose)Polymerase Family Member 3,PARP3]在脂多糖(Lipopolysaccharide,LPS)诱导的小胶质细胞BV2炎症及凋亡中的作用机制,为视神经损伤的临床治疗提供潜在靶点。方法:通过LPS刺激BV2小胶质细胞,构建体外炎症损伤模型,随后利用实时荧光定量聚合酶链反应技术、蛋白质印迹及流式细胞术等技术手段,检测PARP3的蛋白及mRNA表达水平、炎症因子的分泌以及细胞凋亡的情况。结果:LPS处理后,BV2细胞中PARP3表达水平显著上调,炎症因子分泌增加,细胞活性氧增多,细胞凋亡率增加,而抑制PARP3能显著减少这些效应。结论:PARP3在LPS诱导的BV2细胞炎症及凋亡中起关键作用,为视神经损伤治疗提供了新的潜在靶点。展开更多
寿天德于1982年在中国科学技术大学建立了视觉研究实验室,确定以研究视觉信息处理的中枢机制为主要研究方向.1997年寿天德调离中国科学技术大学到复旦大学工作,建立该校脑科学研究中心并担任主任,中国科学技术大学视觉研究实验室由周逸...寿天德于1982年在中国科学技术大学建立了视觉研究实验室,确定以研究视觉信息处理的中枢机制为主要研究方向.1997年寿天德调离中国科学技术大学到复旦大学工作,建立该校脑科学研究中心并担任主任,中国科学技术大学视觉研究实验室由周逸峰负责.视觉研究实验室成立以来共承担各类研究课题30余项,总经费800多万元,发表国内外核心刊物论文100余篇,其中国际核心刊物论文60余篇,被国际同行引用400次以上.2007年在"Neurobiology of Aging"上发表的一篇论文被科技部中国科学技术信息研究所评选为第一届"中国百篇最具影响优秀国际学术论文".视觉研究实验室成员曾获得中国科学院自然科学二等奖和一些个人奖项.2002年起与美国犹他大学Leventhal教授合作进行有关哺乳动物视觉系统衰老机制的研究,获NIH子课题及国家基金委重大国际合作项目资助,合作研究成果发表在SCIENCE上.2001年以来与美国南加州大学吕忠林教授合作进行有关弱视认知损害机制的研究,合作研究成果发表在美国科学院院刊(PNAS)上.视觉研究实验室主要成员开设了五门以上课程,曾荣获中国科学技术大学首批优秀课程奖.共指导学士论文50余篇,硕士论文20篇,博士论文21篇.展开更多
Nitric oxide is an important neuromodulator in the brain and is involved in the development of visual system. But it is not clear how nitric oxide and nitric oxide synthase (NOS) are involved in the developing visua...Nitric oxide is an important neuromodulator in the brain and is involved in the development of visual system. But it is not clear how nitric oxide and nitric oxide synthase (NOS) are involved in the developing visual cortex of rodents. Thus we examined the expression of NOS activity in the postnatal developing visual cortex of the golden hamster by using histochemical technique for NADPH-diaphorase (NADPH-d). A heavily stained NADPH-d band was observed in the neuropil of the visual cortex. This NADPH-d band initially appeared in the cortical plate from the day of birth (P0) to postnatal day 4 (P4). From P7 to P21, this band was confined to area 17 and migrated to the deeper layers Ill IV and V VI before it eventually disappeared at P28. Such developmental trends of the band correlated well with the process of formation and establishment of the geniculo-cortical projection patterns. Thus, the areal specific development of the band suggests that NOS is closely related to the cortical differentiation and synaptic formation of the primary visual cortex. On the other hand, monocular eye enucleation on P1 could not alter the appearance of this NADPH-d positive band, indicating a non-activity dependant role of NOS. In addition, differences in the laminar distributions and developmental sequence between the heavily and lightly stained NADPH-d positive neurons during development suggest that they play different roles in the development.展开更多
文摘目的:探讨聚(ADP-核糖)聚合酶家族成员3[Poly(ADP-Ribose)Polymerase Family Member 3,PARP3]在脂多糖(Lipopolysaccharide,LPS)诱导的小胶质细胞BV2炎症及凋亡中的作用机制,为视神经损伤的临床治疗提供潜在靶点。方法:通过LPS刺激BV2小胶质细胞,构建体外炎症损伤模型,随后利用实时荧光定量聚合酶链反应技术、蛋白质印迹及流式细胞术等技术手段,检测PARP3的蛋白及mRNA表达水平、炎症因子的分泌以及细胞凋亡的情况。结果:LPS处理后,BV2细胞中PARP3表达水平显著上调,炎症因子分泌增加,细胞活性氧增多,细胞凋亡率增加,而抑制PARP3能显著减少这些效应。结论:PARP3在LPS诱导的BV2细胞炎症及凋亡中起关键作用,为视神经损伤治疗提供了新的潜在靶点。
文摘寿天德于1982年在中国科学技术大学建立了视觉研究实验室,确定以研究视觉信息处理的中枢机制为主要研究方向.1997年寿天德调离中国科学技术大学到复旦大学工作,建立该校脑科学研究中心并担任主任,中国科学技术大学视觉研究实验室由周逸峰负责.视觉研究实验室成立以来共承担各类研究课题30余项,总经费800多万元,发表国内外核心刊物论文100余篇,其中国际核心刊物论文60余篇,被国际同行引用400次以上.2007年在"Neurobiology of Aging"上发表的一篇论文被科技部中国科学技术信息研究所评选为第一届"中国百篇最具影响优秀国际学术论文".视觉研究实验室成员曾获得中国科学院自然科学二等奖和一些个人奖项.2002年起与美国犹他大学Leventhal教授合作进行有关哺乳动物视觉系统衰老机制的研究,获NIH子课题及国家基金委重大国际合作项目资助,合作研究成果发表在SCIENCE上.2001年以来与美国南加州大学吕忠林教授合作进行有关弱视认知损害机制的研究,合作研究成果发表在美国科学院院刊(PNAS)上.视觉研究实验室主要成员开设了五门以上课程,曾荣获中国科学技术大学首批优秀课程奖.共指导学士论文50余篇,硕士论文20篇,博士论文21篇.
基金the Fundamental Research Funds for the Central Universities,No.21609101the National Basic Research Program of China (973 Program),No.2011CB707501
文摘Nitric oxide is an important neuromodulator in the brain and is involved in the development of visual system. But it is not clear how nitric oxide and nitric oxide synthase (NOS) are involved in the developing visual cortex of rodents. Thus we examined the expression of NOS activity in the postnatal developing visual cortex of the golden hamster by using histochemical technique for NADPH-diaphorase (NADPH-d). A heavily stained NADPH-d band was observed in the neuropil of the visual cortex. This NADPH-d band initially appeared in the cortical plate from the day of birth (P0) to postnatal day 4 (P4). From P7 to P21, this band was confined to area 17 and migrated to the deeper layers Ill IV and V VI before it eventually disappeared at P28. Such developmental trends of the band correlated well with the process of formation and establishment of the geniculo-cortical projection patterns. Thus, the areal specific development of the band suggests that NOS is closely related to the cortical differentiation and synaptic formation of the primary visual cortex. On the other hand, monocular eye enucleation on P1 could not alter the appearance of this NADPH-d positive band, indicating a non-activity dependant role of NOS. In addition, differences in the laminar distributions and developmental sequence between the heavily and lightly stained NADPH-d positive neurons during development suggest that they play different roles in the development.