Protein Palmitoylation and the Etiology of X-Linked Intellectual Disabilities
蛋白质棕榈酰化和 X 连锁智力障碍的病因学
基本信息
- 批准号:9278318
- 负责人:
- 金额:$ 18.69万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-06-01 至 2018-11-30
- 项目状态:已结题
- 来源:
- 关键词:AccountingActive SitesAddressAffectBiotinCardiovascular DiseasesCellsChromosome DeletionColorectalCommunicable DiseasesConserved SequenceCountryCysteineDLG4 geneDefectDiseaseEnvironmentEnzymesEquipment and supply inventoriesEtiologyFamilyFatty AcidsFetal Alcohol SyndromeFutureGenesGeneticGlutamatesGoalsGuanosine Triphosphate PhosphohydrolasesHealthHippocampus (Brain)ImpairmentIntellectual functioning disabilityKnowledgeLeadLinkLipidsMalignant NeoplasmsMalnutritionMapsMembraneMolecularMutationNamesNeuronsPalmitatesPathogenesisPatientsPhysiologyPlayPopulationPost-Translational Protein ProcessingProcessProtein FamilyProteinsProteomicsPsyche structureRattusRegulationResearchRoleSignal TransductionSocietiesSynapsesSystemTechniquesTestingTherapeuticTransferaseVesicleWorkX-linked intellectual disabilitybasecell growth regulationearly onsetgephyrinhealth economicshuman diseasein vitro activityin vivoinnovationlife time costmalemembermutantnervous system disordernew therapeutic targetpalmitoylationprotein degradationprotein transportreceptorsocioeconomicssynaptic functiontrafficking
项目摘要
Early onset intellectual disabilities (ID) affect 1-3% of the population and results in a major burden to
families and society, with lifetime costs estimated to be $1-2 million. There are many causes, some of
which are preventable such as malnutrition and fetal alcohol syndrome. However, the most severe
forms of ID have genetic causes, and approximately 25% of all cases have been mapped to chromo-
somal deletions, rearrangements, and mutations. X-linked intellectual disabilities (XLIDs) account for
approximately 10-12% of male ID cases. Identification of the responsible genes holds out the promise
that having an inventory of potentially defective genes, and understanding the molecular defects will
lead to better tests and treatments to help patients and their families. Several ID mutations (X-linked
and autosomal) have been mapped to members of a family of protein acyl transferase (PAT) enzymes
that our group discovered and is characterizing. They are referred to as zDHHC PATs, named for a
conserved sequence motif in the active site of the enzyme (Asp-His-His-Cys). Mutations in zDHHC
genes have been linked to colorectal and leukomyloid cancers, cardiovascular disease, infectious dis-
eases, and neurological disorders. Despite the growing appreciation of the role of palmitoylation in cell
physiology, the molecular mechanism of palmitoylation and depalmitoylation, substrate selection, and
regulation of palmitoyl transfer activity requires further study. The proposed studies will lay the ground-
work for future studies aimed at clarifying the link between zDHHC9 mutations and XLID and for under-
standing the molecular mechanisms that link palmitoylation to disease in general. We will accomplish
these goals by pursuing two specific aims: (1) Identification of zDHHC9 palmitoylated substrates in neu-
rons;; and (2) Determine how altered palmitoylation causes neuronal defects that can lead to X-Linked
Intellectual Disability (XLID). Successful completion of these studies will increase our understanding of
the role of protein lipidation in cellular regulation during health and disease. The proposed research is
innovative because of the new techniques we will use to probe the mechanism of action of a new family
of enzymes central to the establishment of spatial regulation of signaling networks.
早期发作智力残疾(ID)影响1-3%的人口,并导致重大燃烧
家庭和社会,终身成本估计为1-200万美元。有很多原因,有些
可以预防的,例如营养不良和胎儿酒精综合征。但是,最严重的
ID的形式具有通用原因,大约25%的病例已映射到铬
符号缺失,重排和突变。 X连锁的肠道残疾(XLID)帐户
大约10-12%的男性ID病例。负责基因的识别具有承诺
具有潜在有缺陷基因的清单以及了解分子缺陷将
导致更好的测试和治疗以帮助患者及其家人。几个ID突变(X连锁)
常染色体)已映射到蛋白酰基转移酶(PAT)酶的成员
我们的小组发现并正在表征。它们被称为ZDHHC Pats,以A的名字命名
酶(ASP-HIS-HIS-CYS)的活性位点中的保守序列基序。 ZDHHC中的突变
基因与结直肠癌和白细胞癌,心血管疾病,感染性疾病有关
思想和中性疾病。尽管棕榈油在细胞中的作用增长了
生理学,棕榈酰化和去氨酰化的分子机制,底物选择和
棕榈酰转移活性的调节需要进一步研究。拟议的研究将奠定基础
旨在阐明ZDHHC9突变与XLID以及不足 -
一般而言,将棕榈酰化与疾病联系起来的分子机制。我们将完成
这些目标通过追求两个具体目标:(1)识别neu-中的ZDHHC9棕榈酰化底物
罗恩斯; (2)确定棕榈酰化的改变是如何导致可能导致X连锁的神经元缺陷
智力残疾(XLID)。这些研究的成功完成将增加我们对
蛋白质脂化在健康和疾病中细胞调节中的作用。拟议的研究是
创新性,因为我们将使用新技术来探测一个新家庭的行动机制
建立信号网络空间法规的中心的酶。
项目成果
期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Robert J Deschenes其他文献
Robert J Deschenes的其他文献
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{{ truncateString('Robert J Deschenes', 18)}}的其他基金
Endomembrane Targeting and Signaling of RAS Proteins
RAS 蛋白的内膜靶向和信号转导
- 批准号:
7803462 - 财政年份:2008
- 资助金额:
$ 18.69万 - 项目类别:
Endomembrane Targeting and Signaling of RAS Proteins
RAS 蛋白的内膜靶向和信号转导
- 批准号:
7857954 - 财政年份:2008
- 资助金额:
$ 18.69万 - 项目类别:
Endomembrane Targeting and Signaling of RAS Proteins
RAS 蛋白的内膜靶向和信号转导
- 批准号:
8035907 - 财政年份:2008
- 资助金额:
$ 18.69万 - 项目类别:
Endomembrane Targeting and Signaling of RAS Proteins
RAS 蛋白的内膜靶向和信号转导
- 批准号:
7388498 - 财政年份:2008
- 资助金额:
$ 18.69万 - 项目类别:
Endomembrane Targeting and Signaling of RAS Proteins
RAS 蛋白的内膜靶向和信号转导
- 批准号:
7575261 - 财政年份:2008
- 资助金额:
$ 18.69万 - 项目类别:
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