Genetic modulators of 3-NP neurotoxicity
Genetic modulators of 3-NP neurotoxicity
批准号:
9370237
负责人:
IOANNIS DRAGATSIS
金额:
$22.8万
依托单位国家:
美国
项目类别:
财政年份:
2017
资助国家:
美国
项目状态:
已结题
起止时间:
2017-08-15 至 2019-07-31
关键词:
3-nitropropionic acidAlzheimer&aposs DiseaseAmyotrophic Lateral SclerosisAnimal ModelApplications GrantsAreaBehavioral ResearchBioenergeticsBiomedical ResearchCandidate Disease GeneCell modelClinicalClinical ResearchComplexConsumptionCorpus striatum structureDataDevelopmentDiseaseEnvironmental Risk FactorExhibitsExposure toFood ContaminationFunctional disorderGenerationsGeneticGrantHealthHeritabilityHumanHuntington DiseaseImpairmentInbreedingIndividualIndustrial fungicideIntraperitoneal InjectionsLeadLesionLightLivestockMachado-Joseph DiseaseMapsMethodologyMitochondriaMitochondrial DiseasesModelingMouse StrainsMultiple System AtrophyMusNeurodegenerative DisordersNeuronal InjuryNeurotoxinsOccupational ExposureParkinson DiseasePathologicPathway interactionsPhenotypePlayPredispositionPreventionProcessPublicationsRecombinantsResearchResistanceRespiratory ChainRiskRoleSuccinate DehydrogenaseTechniquesTherapeuticTherapeutic InterventionTreatment EfficacyWorkaging braingenetic varianthigh rewardhigh riskinhibitor/antagonistinsightmitochondrial dysfunctionmolecular targeted therapiesneuron lossneuroprotectionneurotoxicitynew therapeutic targetnovelnovel therapeutic interventionplant fungipolyglutamineresistant straintrait
中文摘要
3-硝基丙酸(3-Nitropropionic acid,3-NP)是一种天然存在的强神经毒素,
植物和真菌导致牲畜和人类中毒。 3-β-NP不可逆地抑制琥珀酸
脱氢酶(SDH),线粒体呼吸链复合物II的主要成分,导致
受损的线粒体生物能量和神经元细胞死亡,主要是在纹状体。近年来
通过抑制线粒体复合物II琥珀酸脱氢酶起作用的新一代杀真菌剂
被引入市场。尽管职业接触或一般食用任何一种牲畜,
受SDH抑制剂污染的生产品或加工食品可能不会对健康构成严重风险,
健康个体,即使是少量也可能影响个体的临床和病理表现
已经容易患上线粒体功能受损的神经退行性疾病。
线粒体功能障碍发生在衰老的大脑以及许多神经退行性疾病中,
包括α-突触核蛋白病、多系统萎缩和帕金森病,
疾病亨廷顿病和马查多-约瑟夫病、肌萎缩性侧索硬化症和阿尔茨海默病
疾病 环境因素和遗传修饰剂被认为在这些和
其他神经退行性疾病。这项工作的长期目标是确定3-氨基酚NP的遗传修饰剂
使用近交系BXD小鼠进行的神经毒性,用于绘制导致对3-氨基丁酸敏感性或耐药性的基因座
NP-β诱导神经元细胞死亡。初步结果表明,亲本菌株C57 BL/6 J是敏感的
而DBA/2 J对3-β-NP-STAT诱导的神经元损伤具有抗性,证明了BXD用于我们目的的合理性。
确定为3-羟色胺NP提供神经保护的遗传途径对于发现潜在的
遗传调节剂的3-氨基酚神经毒性,揭示机制的易感性与
暴露在这种神经毒素中 此外,我们的发现将提供对该疾病的进一步了解
与线粒体功能障碍相关的神经退行性疾病的过程,并导致新的细胞系,
预防和治疗研究。
英文摘要
3-nitropropionic acid (3-NP) is a well-documented naturally occurring potent neurotoxin produced by certain
plants and fungi causing livestock as well as human poisonings. 3-NP irreversibly inhibits succinate
dehydrogenase (SDH), the main constituent of the mitochondrial respiratory chain complex II, leading to
impaired mitochondrial bioenergetics and neuronal cell death, predominantly in the striatum. In recent years, a
new generation of fungicides that act via inhibition of mitochondria complex II succinate dehydrogenase has
been introduced into the markets. Although occupational exposure or general consumption of either livestock,
raw produce, or processed food contaminated with inhibitors of SDH may not pose a serious health risk to
healthy individuals, even low amounts might influence the clinical and pathological manifestation in individuals
already predisposed to neurodegenerative diseases where mitochondrial function is compromised.
Mitochondrial dysfunction occurs in the aging brain as well as in a number of neurodegenerative disorders,
including the alpha-synucleopathies Multiple System Atrophy and Parkinson’s Disease, the polyglutamine
disorders Huntington’s Disease and Machado-Joseph Disease, Amyotrophic Lateral Sclerosis, and Alzheimer’s
Disease. Both environmental factors and genetic modifiers are thought to play essential roles in these and
other neurodegenerative disorders. The long-term objective of this work is to identify genetic modifiers of 3-NP
neurotoxicity using inbred BXD mice for the mapping of loci that contribute to susceptibility or resistance to 3-
NP-induced neuronal cell death. Our preliminary data indicate that the parental strain C57BL/6J is susceptible
whereas DBA/2J is resistant to 3-NP-induced neuronal injury, justifying the use of BXDs for our purposes.
Identifying genetic pathways that provide neuroprotection to 3-NP will be invaluable for uncovering potential
genetic modulators of 3-NP neurotoxicity, shedding light on mechanisms of susceptibility associated with
exposure to this neurotoxin. In addition, our findings will provide further understanding of the disease
processes in neurodegenerative disorders associated with mitochondria dysfunction, and lead to new lines of
research on prevention and therapeutics.
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