A Scalable Neuron-Based High-Throughput Screening Platform for the Discovery of Compounds that Restore Protein Expression Caused by Genetic Haploinsufficiency
一种可扩展的基于神经元的高通量筛选平台,用于发现可恢复由遗传单倍体不足引起的蛋白质表达的化合物
基本信息
- 批准号:9370360
- 负责人:
- 金额:$ 68.73万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-07-01 至 2020-03-31
- 项目状态:已结题
- 来源:
- 关键词:AcademiaAllelesAutistic DisorderBiologicalBiological AssayBrainBrain DiseasesBudgetsChemicalsChildhoodClinicalDevelopmentDiseaseEnvironmentEpilepsyEvaluationFluorescenceGene TargetingGeneticGoalsHandHumanIndustrializationIntellectual functioning disabilityKnock-in MouseLeadLibrariesMagicMindMiniaturizationModelingMolecularMusNatureNeuronsOnline Mendelian Inheritance In ManPatientsPharmaceutical PreparationsPhenotypePlant RootsProceduresProcessProteinsReporterReportingReproducibilityResearchRoboticsSeriesSystemSystems DevelopmentTestingTherapeuticVariantWorkassay developmentbasecost effectivedesigndisease phenotypedrug discoveryexperimental studyflexibilityhigh throughput screeningimprovedminiaturizeneuropsychiatric disordernovelprotein expressionscale upscreening
项目摘要
PROJECT SUMMARY
Drug discovery pipelines for neuropsychiatric disorders are dry. One approach to rejuvenating these pipelines
would be to create assays based on relevant disease phenotypes in primary neurons, something that is
currently lacking. However, a scalable assay development platform that is based on bona fide neurons,
remains cost effective, and that can support industrial level HTS does not currently exist. Over the past five
years, our collaborative group has created a flexible and scalable primary neuron assay development system
that is compatible with industrial-level HTS. Here, our goal is to optimize these procedures and workflows
to determine the limit of scalability of neuron-based HTS phenotypic assays so that they can easily
support very large campaigns of >200K compounds.
A substantial proportion of childhood brain disorders are caused by single autosomal dominant variants
resulting in genetic haploinsufficiency. The rare genetic brain disorders that arise from these variants offer the
greatest potential for discovery of robust therapeutics because the disease mechanism is often straight forward
(i.e. low protein expression). Therefore, a rationale strategy to improve conditions in these patients would be to
treat them with “magic bullet” compounds that raise expression of functional proteins from the remaining
undamaged allele (e.g. “boosting compounds”). De novo nonsense variants that cause SYNGAP1
haploinsufficiency lead to a genetically-defined form of intellectual disability with autism and epilepsy (MRD5;;
OMIM#603384) that may explain up to 1-2% of all ID cases. The accepted cause of this disorder is low
functional protein expression in neurons caused most often by truncating SYNGAP1 nonsense variants. As a
means to refine the neuron-based HTS system, and to advance treatment for ASD-related disorders, we
are seeking to scale-up and implement an assay for SynGAP expression that is compatible with
industrial-level robotics. In the first Aim, we will optimize an HTS-compatible and disease-relevant SynGAP
expression assay. This assay is based on mouse primary neurons where tdTomato fluorescence reflects
steady-state endogenous SynGAP protein levels. In the second aim, we will miniaturize the SynGAP
expression assay to the 1536-well format. This miniaturization process would enable an HTS-scale screen of
this, or any other related neuron-based phenotypic assay, of up to 400,000 culture wells using a standard
screening budget. Finally, we will implement the SynGAP expression assay in a true uHTS environment and
then validate lead compounds that emerge from a 20K compound pilot screen, including a 10K compound
repurposing screen of known “safe in human” compounds. The impact of this project that we expect to
develop procedures that will increase the scale of HTS campaigns in neurons by 10-fold or more relative to the
current state-of-the-art in academic screening centers. We also expect to validate at least one lead compound
that boosts SynGAP expression, hopefully from the repurposing library.
项目摘要
神经精神疾病的药物发现管道干燥。
将根据原发性神经元中的相关疾病表型创建测定,这是
但是,目前缺乏。
仍然具有成本效益,并且可以支持目前不存在的工业水平HT。
多年来,我们的知识小组创建了一个灵活且可扩展的主要神经元测定系统
这与工业级别的HT兼容。
确定基于神经元的HTS表型测定的可伸缩性极限,以便它们可以轻松
支持> 200k化合物的大型运动。
儿童脑疾病的很大一部分是由单个常染色体显性型变体引起的
导致遗传性无遗传性。
发现强大的世代毒剂的最大潜力这种疾病机制通常是海峡前进
(即低蛋白质)。
用“魔术子弹”对处理功能蛋白的表达从剩余的
未损坏的等位基因(例如“增强化合物”)。
单倍不足会导致一种遗传定义的智力障碍形式,其自闭症和癫痫病(MRD5 ;;;;;;
OMIM#603384)可以解释所有ID病例的1-2%。
神经元中的功能蛋白表达最常是由syngap1废话方差作为a引起的
用于完善基于神经元的HTS系统的手段,并为与ASD相关的疾病提供建议治疗,我们
正在寻求扩大和实施与syngap表达式相兼容的测定法
工业级机器人技术。
表达测定。
稳态内源性蛋白质水平。
对1536孔格式的表达测定。
使用标准
筛选预算,最后,我们将在真正的UHTS环境中进行表达
然后验证从20K复合试点屏幕中出现的铅化合物,包括10K化合物
已知“安全”化合物的重新筛选。
制定程序将神经元中HTS运动的规模增加10倍或更多相对于
目前的学术筛查中心中的最新面积。
这可以提高Syngap的表达,希望来自重新利用的库。
项目成果
期刊论文数量(0)
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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GAVIN R RUMBAUGH其他文献
GAVIN R RUMBAUGH的其他文献
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{{ truncateString('GAVIN R RUMBAUGH', 18)}}的其他基金
Molecular and cellular basis for autism spectrum disorders caused by exacerbated translation
加剧翻译引起的自闭症谱系障碍的分子和细胞基础
- 批准号:
10697387 - 财政年份:2022
- 资助金额:
$ 68.73万 - 项目类别:
Molecular and cellular basis for autism spectrum disorders caused by exacerbated translation
加剧翻译引起的自闭症谱系障碍的分子和细胞基础
- 批准号:
10704718 - 财政年份:2022
- 资助金额:
$ 68.73万 - 项目类别:
Neurodevelopmental Disorder Risk Gene Regulation of Intrinsic Membrane Excitability: A Rheostat that Tunes Dendritic Morphogenesis to Regulate Circuit Assembly During Development
内在膜兴奋性的神经发育障碍风险基因调节:调节树突形态发生以调节发育过程中电路组装的变阻器
- 批准号:
10571558 - 财政年份:2022
- 资助金额:
$ 68.73万 - 项目类别:
Molecular and cellular basis for autism spectrum disorders caused by exacerbated translation
加剧翻译引起的自闭症谱系障碍的分子和细胞基础
- 批准号:
10456979 - 财政年份:2022
- 资助金额:
$ 68.73万 - 项目类别:
Molecular and cellular basis for autism spectrum disorders caused by exacerbated translation
加剧翻译引起的自闭症谱系障碍的分子和细胞基础
- 批准号:
10264087 - 财政年份:2020
- 资助金额:
$ 68.73万 - 项目类别:
Causal Interactions between genetic risk, precise cortical connectivity, and autism-associated behaviors
遗传风险、精确皮质连接和自闭症相关行为之间的因果相互作用
- 批准号:
10526411 - 财政年份:2019
- 资助金额:
$ 68.73万 - 项目类别:
Causal Interactions between genetic risk, precise cortical connectivity, and autism-associated behaviors
遗传风险、精确皮质连接和自闭症相关行为之间的因果相互作用
- 批准号:
9885217 - 财政年份:2019
- 资助金额:
$ 68.73万 - 项目类别:
Causal Interactions between genetic risk, precise cortical connectivity, and autism-associated behaviors
遗传风险、精确皮质连接和自闭症相关行为之间的因果相互作用
- 批准号:
10063962 - 财政年份:2019
- 资助金额:
$ 68.73万 - 项目类别:
Causal Interactions between genetic risk, precise cortical connectivity, and autism-associated behaviors
遗传风险、精确皮质连接和自闭症相关行为之间的因果相互作用
- 批准号:
10616304 - 财政年份:2019
- 资助金额:
$ 68.73万 - 项目类别:
Causal Interactions between genetic risk, precise cortical connectivity, and autism-associated behaviors
遗传风险、精确皮质连接和自闭症相关行为之间的因果相互作用
- 批准号:
10307109 - 财政年份:2019
- 资助金额:
$ 68.73万 - 项目类别:
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