Transcriptional, functional, and circuit profiling at single cell resolution of neuronal ensembles engaged by heroin relapse

海洛因复吸所涉及的神经元群的单细胞分辨率转录、功能和回路分析

基本信息

批准号：
10434119
负责人：
Susan Marie Ferguson
金额：
$ 58.88万
依托单位：
UNIVERSITY OF WASHINGTON
依托单位国家：
美国
项目类别：
财政年份：
2021
资助国家：
美国
起止时间：
2021-07-01 至 2026-03-31
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10434119
关键词：
Address Affect Anatomy Animal Behavior Animal Model Atlases Behavior Bioinformatics Biological Assay Brain Brain region Calcium Cells Chromatin Communities Cues Data Data Collection Data Set Development Dorsal Drug Exposure Drug Modelings Drug usage Exposure to Fluorescent in Situ Hybridization Future Gene Expression Gene Expression Profile Gene Expression Profiling Genes Genetic Transcription Gold Heroin Heroin Dependence Human Image Individual Individual Differences Infusion procedures Knowledge Lead Light Measurement Medial Microscopy Modeling Molecular Nature Nervous system structure Neurons Neurosciences Nucleus Accumbens Opiate Addiction Opioid Pattern Pharmaceutical Preparations Population Process Publishing RNA Rattus Relapse Research Resolution Resources Sampling Self Administration Series Signal Transduction Slice Societies Standardization System Thalamic structure Tissue-Specific Gene Expression Tissues addiction base behavioral phenotyping brain cell brain tissue cell type cohort drug development drug seeking behavior gene network in vivo in vivo calcium imaging molecular marker neural circuit novel opioid use relating to nervous system response single cell sequencing single-cell RNA sequencing therapeutic candidate therapeutic target

项目摘要

Abstract: Opiate addiction extorts a tremendous toll on society, but a mechanistic understanding of how repeated exposure to opioids such as heroin ultimately results in compulsive drug-taking and -seeking behavior in some individuals, but not others, is still not known. A longstanding idea is that enduring changes in neural circuit function occur because of drug-induced gene expression changes in certain brain cells. This facilitates subsequent drug-taking and -seeking behaviors in vulnerable individuals. Unfortunately, identifying cell-type specific alterations following drug use (typically performed in established animal models of addiction), is generally a slow and tedious process as changes in gene expression following in vivo drug exposure are typically assayed in series, within heterogeneous brain regions, in an a-priori hypothesis driven fashion (i.e. previous knowledge predicting a specific gene may be involved). This dramatically limits the throughput of data collection and likely complicates the subsequent interpretation as gene expression patterns data are typically captured from thousands to millions of homogenized cells. Given that the nervous system is composed of highly heterogeneous tissue, re-assessing cell type specific gene expression changes in an unbiased manner from 1000's of individual cells is desperately needed. Here, we propose to combine our expertise in order to generate comprehensive datasets aimed at understanding how single-cell gene expression, circuit connectivity, and neural activity patterns are impacted by previous drug-taking behavior. These data will provide a much-needed cellular atlas and resource for the addiction neuroscience community and will likely lead to the identification of many novel cell type, gene expression changes, and ensembles that can be leveraged for future study.

抽象的：阿片成瘾对社会造成巨大损失，但对重复接触阿片成瘾的机制有一个机械性的理解海洛因等阿片类药物最终会导致某些人出现强迫性吸毒和寻求毒品的行为，但不是其他人，目前还不得而知。一个长期存在的想法是神经回路功能会发生持久的变化因为药物诱导某些脑细胞的基因表达发生变化。这有利于后续吸毒 - 寻求弱势个体的行为。不幸的是，识别细胞类型特异性改变如下吸毒（通常在已建立的成瘾动物模型中进行）通常是一个缓慢而乏味的过程因为体内药物暴露后基因表达的变化通常是连续进行的，在异质的大脑区域，以先验假设驱动的方式（即先前的知识预测可能涉及特定基因）。这极大地限制了数据收集的吞吐量，并可能使数据收集变得复杂随后的解释为基因表达模式数据通常捕获数千到数百万匀浆细胞。鉴于神经系统是由高度异质的组织组成，重新评估细胞类型特异性基因表达以无偏见的方式从数千个个体细胞中发生变化是迫切需要的需要。在这里，我们建议结合我们的专业知识，生成旨在了解单细胞基因表达、回路连接和神经活动模式如何受到影响既往吸毒行为。这些数据将为人类提供急需的细胞图谱和资源。成瘾神经科学界可能会导致许多新的细胞类型、基因的鉴定表达变化以及可用于未来研究的集合。