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α-synuclein

α-synuclein的相关文献在2000年到2022年内共计120篇,主要集中在神经病学与精神病学、基础医学、分子生物学 等领域,其中期刊论文112篇、会议论文3篇、专利文献5篇;相关期刊66种,包括生物化学与生物物理进展、中国老年学杂志、中风与神经疾病杂志等; 相关会议3种,包括第九届全国青年药学工作者最新科研成果交流会、首都医科大学首届博士生学术论坛、第五届全国微米/纳米技术学术会议等;α-synuclein的相关文献由387位作者贡献,包括陈乃宏、苑玉和、杨慧等。

α-synuclein—发文量

期刊论文>

论文:112 占比:93.33%

会议论文>

论文:3 占比:2.50%

专利文献>

论文:5 占比:4.17%

总计:120篇

α-synuclein—发文趋势图

α-synuclein

-研究学者

  • 陈乃宏
  • 苑玉和
  • 杨慧
  • 刘振国
  • 秦川
  • 倪培华
  • 孙建栋
  • 张克忠
  • 张海娜
  • 张颖
  • 期刊论文
  • 会议论文
  • 专利文献

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    • Tao Dang; Wen-Jing Cao; Rong Zhao; Ming Lu; Gang Hu; Chen Qiao
    • 摘要: As a late endosomal/lysosomal transport protein of the P5-type, ATP13A2 is capable of removing the abnormal accumulation of α-synuclein, which maintains the homeostasis of metal ions and polyamines in the central nervous system. Furthermore, ATP13A2 regulates the normal function of several organelles such as lysosomes, endoplasmic reticulum (ER) and mitochondria, and maintains the normal physiological activity of neural cells. Especially, ATP13A2 protects dopaminergic (DA) neurons against environmental or genetically induced Parkinson's disease (PD). As we all know, PD is a neurodegenerative disease characterized by the loss of DA neurons in the substantia nigra pars compacta. An increasing number of studies have reported that the loss-of- function of ATP13A2 affects normal physiological processes of various organelles, leading to abnormalities and the death of DA neurons. Previous studies in our laboratory have also shown that ATP13A2 deletion intensifies the neuroinflammatory response induced by astrocytes, thus inducing DA neuronal injury. In addition to elucidating the normal structure and function of ATP13A2, this review summarized the pathological mechanisms of ATP13A2 mutations leading to PD in existing literature studies, deepening the understanding of ATP13A2 in the pathological process of PD and other related neurodegenerative diseases. This review provides inspiration for investigators to explore the essential regulatory role of ATP13A2 in PD in the future.
    • 许珂; 郭佳; 葛明月; 殷姜文; 殷洁婷; 张晗; 李燕
    • 摘要: 目的 研究中脑腹侧被盖区(VTA)多巴胺转运蛋白的变化与老年大鼠术后发生认知功能障碍之间的关系.方法 将50只大鼠随机分为空白组、假手术组、PND模型组、多巴胺转运蛋白敲低AAV·DAT·RNAi组、多巴胺转运蛋白敲低阴性对照AAV·NC组,每组10只.模型组大鼠进行丙泊酚全麻下脾切除手术;AAV干预大鼠预先经脑立体定位仪显微靶向注射AAV·DAT·RNAi或AAV·NC至VTA核团;假手术组大鼠输注丙泊酚.采用Morris水迷宫及条件恐惧实验判断大鼠认知功能损伤程度;免疫荧光染色观察VTA区及海马CA1区DAT、α-synuclein(α-syn)、β-Amyloid 1-42(Aβ1-42)的蛋白定位及表达情况;Western blot法检测海马α-synuclein(α-syn)、β-Amyloid1-42(Aβ1-42)的蛋白含量,比较各组间蛋白含量的差异.结果 与空白组比较,PND模型组大鼠行为学表现出明显的认知功能减退;海马CA1区α-syn、Aβ1-42蛋白含量明显升高(P<0.05).与PND模型组相比,AAV·DAT·RNAi组大鼠行为学显示认知功能减退改善;AAV·DAT·RNAi组VTA区多巴胺转运蛋白含量明显降低;海马CA1区α-syn、Aβ1-42蛋白含量明显降低(P<0.05).结论 VTA区多巴胺转运蛋白参与了老年大鼠认知功能障碍,并且VTA区DAT变化对老年大鼠术后认知功能的影响可能与调控海马区α-syn、Aβ1-42蛋白聚集有关.
    • 王亚; 韩克阳; 李文; 王韶澜; 瞿蓉蓉; 刘源; 孙贝贝; 姜静; 吴卫东
    • 摘要: 目的 探讨臭氧所致的雄性小鼠神经退行性样改变及潜在机制.方法 23只C57BL/6N 7~8月龄雄性小鼠分为对照组(空气组,11只)和臭氧组(1 mg/m3,4 h/d,12只).臭氧连续暴露8周后,利用Morris水迷宫实验检测小鼠的学习记忆能力;HE染色观察海马组织细胞的病理学改变;免疫印迹实验法检测Tau、p-Tau和α-synuclein蛋白在脑皮层组织的表达水平.结果 臭氧暴露8周后,小鼠的空间学习记忆能力受到一定程度损伤,逃避潜伏期随时间延长均有下降趋势,两条折线分开,但差异无统计学意义.臭氧暴露引起小鼠海马组织细胞形态改变,出现海马神经元的排列紊乱、核皱缩等,脑皮层组织中p-Tau和α-synuclein蛋白表达明显升高,差异有统计学意义(P<0.05),总Tau表达水平差异无统计学意义.结论 臭氧暴露可引起小鼠学习记忆能力损伤、海马神经细胞病理学改变以及神经退行性变相关蛋白表达增加的趋势.
    • SUN Jie; LU Dan-hua; LI Kun; LIN Xiao-min; PAN Ming-hai; GONG Hai-biao; SUN Wan-yang; WANG Meng; LIANG Lei; Kurihara Hiroshi; LI Yi-fang; DUAN Wen-jun; ZHANG Li; HE Rong-rong
    • 摘要: OBJECTIVE Intracellular aggre⁃gation ofα-synuclein(SNCA)is one of the core pathological features of neurodegenerative disor⁃ders including Parkinson disease,whilst the detailed mechanism for consequently neuron loss has not been fully illustrated.Since the altered phospholipid homeostasis has been suggested to play a role in synucleinopathy,this study aims to depict the fully-featured status of phospholip⁃ids and the targets reposingα-synuclein-related neurotoxicity.METHODS SNCAA53T transgenic mice were utilized as the model of Parkinson disease.Behavioral tests including pole test,rotarod test and gait analysis were conducted to assess the motor features of Parkinsonism.Tyro⁃sine hydroxylase were determined by immunohis⁃tochemistry.Glutathione,dopamine,3,4-dihy⁃droxyphenylacetic acid and homovanillic acid were determined by HPLC-ECD analysis.Assess⁃ment of lipid peroxidation included MDA assay and Liperfluo staining.Phospholipid-omics was analyzed based on LC-MS/MS.Investigation on mechanism was relied on Western blotting and qPCR assay.The injection of AAV into midbrain was achieved by ultra-micro injection pump to obtain the target genotype.RESULTS SNCAA53T transgenic mice displayed progres⁃sively deteriorated motor coordination functions and the mechanisms were related with lipid per⁃oxidation and ferroptosis,which might help to explain the parkinsonism.These hydroperoxides were observed on plasm membrane and were further characterized by LC-MS/MS-based phos⁃pholipid-omics analysis.α-synucleinA53T trans⁃genic mice displayed distinct patterns of phos⁃pholipid peroxidation in midbrain regions com⁃pared to wild type littermates.Among different subtypes of oxidized phospholipids,oxidative phosphatidylcholine(PC-ox)was more promi⁃nently elevated.Phospholipid peroxidation is believed as a biomarker of ferroptosis,which is largely a specialized death program caused by insufficiency of glutathione peroxidase-4(GPX4),the only known enzyme that can reduce lipid hydroperoxides within biological membranes.The deficiency of Gpx4 was demonstrated to be responsible forα-synuclein-induced lipid peroxi⁃dation,and the cell lines and mouse models underwent genetic Gpx4 downregulation showed exacerbated dopaminergic neuron loss and par⁃kinsonism.On the other hand,the potentiation of Gpx4 expression remarkably inhibited dopami⁃nergic ferroptotic death and behavioral deficits in a mouse model with synucleinopathy.CONCLU⁃SION A cellular pathway that Gpx4 deficit-medi⁃ated phospholipid peroxidation and behavioral consequence participated in synucleinopathy,suggesting a potential strategy targeting Gpx4 to alleviate PD symptoms.
    • 郭科东; 张英博; 付春雨; 刘得水; 张晓杰
    • 摘要: 目的探究镇肝熄风汤抗1-甲基-4-苯基-1,2,3,6-四氢吡啶(1-甲基-4-苯基-1,2,3,6-四氢吡啶,MPTP)诱导的帕金森病(PD)模型小鼠的作用。方法随机将雄性C57BL/6小鼠分成对照组、模型组、镇肝熄风汤低浓度组(12.5 g/kg)、中浓度组(25 g/kg)、高浓度组(50 g/kg)。镇肝熄风汤连续灌胃14 d,在灌胃给药9 d之后,连续腹腔注射MPTP(30 mg/kg)5 d,构建帕金森病小鼠模型。进行爬杆行为学与转棒行为学实验,使用荧光定量PCR技术检测α-synuclein mRNA表达,使用Western blot技术检测α-synuclein蛋白表达。结果爬杆实验与转棒实验显示,与模型组对比,镇肝熄风汤各浓度组均可显著延长小鼠的停留时间及缩短爬杆时间;PCR结果表明,与模型组比较,镇肝熄风汤中、高浓度组小鼠中脑黑质的α-synuclein mRNA含量均显著减少(P<0.05);Western blot结果表明,与模型组比较,镇肝熄风汤各浓度组小鼠α-synuclein蛋白含量均显著减少(P<0.05)。结论镇肝熄风汤可能通过抑制PD小鼠α-synuclein,改善PD小鼠运动协调能力。
    • Rui Wang; Hongyang Sun; Haigang Ren; Guanghui Wang
    • 摘要: The presence of intraneuronal Lewy bodies(LBs) and Lewy neurites(LNs) in the substantia nigra(SN) composed of aggregatedα-synuclein(α-syn) has been recognized as a hallmark of pathological changes in Parkinson’s disease(PD). Numerous studies have shown that aggregated α-syn is necessary for neurotoxicity. Meanwhile, the mitochondrial and lysosomal dysfunctions are associated with α-syn pathogenicity. The hypothesis that α-syn transmission in the human brain contributes to the instigation and progression of PD has provided insights into PD pathology. This review will provide a brief overview of increasing researches that shed light on the relationship of α-syn aggregation with mitochondrial and lysosomal dysfunctions, and highlight recent understanding of α-syn transmission in PD pathology.
    • 杨璇; 刘小鹏; 贾丁; 张云; 张正慧; 于佳
    • 摘要: 微丝骨架是细胞中最丰富的骨架系统,在细胞的迁移运动、胞内运输、信号通路转导中起到重要作用.本文对近年来发现的神经元特化部位如轴突主干、突触前、树突主干和树突棘中微丝骨架形态和功能进行了综述.此外,神经元中微丝骨架系统的异常可能参与了多种神经退行性疾病的病理过程,多个神经退行性疾病相关蛋白对微丝骨架具有调节作用.本文还对阐述了α-Synuclein、LRRK2、Parkin等帕金森病(PD)相关蛋白调节微丝骨架的机制,因此在今后的研究中明确微丝细胞是否参与PD的发病及具体的机制,该机制对于治疗PD新药物靶点的开发具有指导意义.
    • ZHOU He-feng; SHAO Min; GUO Bao-jian; LI Chu-wen; LU Yu-cong; YANG Xuan-jun; LI Sheng-nan; LI Hai-tao; ZHU Qi; ZHONG Han-bing; WANG Yu-qiang; ZHANG Zai-jun; LU Jia-hong; LEE Ming-yuen Simon
    • 摘要: OBJECTIVE To investigate the effects of T-006(tetramethylpyrazine derivative)in promotingα-Synuclein(α-Syn)degradation and evaluated the neuroprotective effects in cellular and animalα-Syn model of Parkinson disease(PD).METHODS The inducible PC12 cells overexpressingα-syn and the homozygous transgenic(Tg)mice expressing A53T humanα-syn were used to evaluate the neuroprotective effects of T-006.For cellular study,MTT,Western blotting,proteasomal activity assay and qRT-PCR were applied to analyze the pharmacological effects and underlying mecha⁃nisms.The gene knock-down and overexpression approaches were used to dissect the molecular signaling pathways.For animal study,ten-month-old homozygousα-Syn Tg mice were treated with T-006(3 mg·kg-1)daily by gavage for four weeks.The Western blotting,immunohistochemistry and behavioral tests were applied to determine the neuropatho⁃logical changes.RESULTS T-006 promoted the degradation of WT and mutantα-Syn in PC12α-Syn inducible cells via an ubiquitin-proteasome system(UPS)dependent and autophagy-lysosome pathway independent manner.The mecha⁃nism of action involved the upregulation of 20S proteasome subunit LMP7 expression,which leads to activation of the chymotrypsin-like proteasomal activity for protein degradation.Mechanistically,we demonstrated that T-006 activated PKA/Akt/mTOR pathway upstream for LMP 7 up-regulation and UPS activation.Finally,we illustrated that T-006 promoted both Triton-soluble and-insoluble forms ofα-syn and protected againstα-Syn-induced neurotoxicity in A53Tα-Syn Tg mice.CONCLUSION T-006 is a potent UPS activator which promotes the degradation of pathogenic proteinα-Syn in cellular and animal PD models.Our study thus high-lights the therapeutic potential of small molecular UPS activator like T-006 in the treatment of PD and related conditions.
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