Mechanisms of Alcohol Toxicity and Kidney Damage

酒精中毒和肾脏损害的机制

• 批准号: 10493371
• 负责人: Kristofer S. Fritz
• 金额: $ 18.47万
• 依托单位: UNIVERSITY OF COLORADO DENVER
• 依托单位国家: 美国
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-25 至 2023-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10493371
• 关键词: Acetylation; Acute Renal Failure with Renal Papillary Necrosis; Alanine Transaminase; Albumins; Alcohol consumption; Alcohols; Atrophic; Basic Science; Biochemical; Biochemical Pathway; Bioinformatics; Biological Assay; Biological Markers; Blood Urea Nitrogen; Cell Death; Cells; Cessation of life; Chronic; Creatinine; Data; Data Analyses; Development; Epigenetic Process; Ethanol Metabolism; Ethanol toxicity; Fibrosis; Functional disorder; Gene Expression; Genes; Genetic; Glycosylated Hemoglobin; Goals; Health; Heavy Drinking; Hepatitis; Histologic; Histone Acetylation; Histones; Human; Inflammation; Injury to Kidney; Kidney; Kidney Diseases; LCN2 gene; Laboratories; Liver; Liver diseases; Lysine; Mass Spectrum Analysis; Measures; Medical; Meta-Analysis; Metabolic; Metabolism; Modeling; Morphology; Nuclear; Outcomes Research; Pathologic; Pathology; Play; Post-Translational Protein Processing; Protein Acetylation; Proteins; Proteinuria; Proteomics; Proximal Kidney Tubules; Publishing; Renal Tissue; Renal function; Renal tubule structure; Research; Research Project Grants; Risk; Route; Scheme; Serum; Signal Transduction; Structure; Techniques; Therapeutic Intervention; Tissue Sample; Tissues; Tubular formation; alcohol consequences; alcohol effect; base; chronic alcohol ingestion; epidemiology study; innovation; insight; interdisciplinary approach; interstitial; lipid metabolism; mortality; nephrogenesis; novel; renal damage; tissue mapping; transcriptomics

Project Summary Alcohol consumption contributes to approximately 6% of worldwide deaths. There remains a pressing need for understanding the biochemical mechanisms underlying alcohol toxicity and kidney disease, as chronic alcohol ingestion has been shown to play a key role in the development of acute kidney injury associated with the mortality of alcohol-associated liver disease. It is undeniable that the effect of excessive alcohol consumption presents a direct route to kidney damage, yet the mechanisms underlying this effect remain unknown. This proposal integrates key preliminary data into an innovative hypothesis that alcohol metabolism leads to disrupted acetyl-dependent cellular signaling and altered gene expression profiles, contributing to proximal tubule damage and kidney disease. Alcohol metabolism is known to alter numerous biochemical pathways which leads to negative consequences throughout the cell, including altered genetic reprogramming and cell death. Therefore, alcohol-induced protein acetylation is likely a key initial driver of these changes and downstream kidney pathologies, such as proximal tubular dysfunction. Therefore, we present an innovative approach for investigating how alcohol toxicity induces kidney damage. We will investigate the proposed specific aims: Specific Aim 1: Determine how chronic alcohol consumption alters renal histone acetylation profiles and gene expression using tissue spatial transcriptomics. Specific Aim 2: Examine altered proximal tubule pathology and proteomic activity resulting from chronic alcohol metabolism. These aims will be interrogated utilizing a multidisciplinary approach that will integrate pathological analysis, quantitative mass spectrometry for proteomics, enzymatic assays, and tissue morphology gene expression, as well as innovative data analyses and bioinformatics. A key outcome of this research will be an enhanced understanding of the mechanisms by which alcohol metabolism impacts renal function to further therapeutic intervention and the amelioration of kidney disease.

项目概要 全球约 6% 的死亡是由饮酒造成的。仍然迫切需要 了解酒精中毒和肾脏疾病（如慢性酒精）背后的生化机制 摄入已被证明在与急性肾损伤相关的发展中起着关键作用 酒精相关肝病的死亡率。不可否认的是，过量饮酒的影响 是导致肾脏损伤的直接途径，但这种影响的机制仍不清楚。这 该提案将关键的初步数据整合到一个创新的假设中，即酒精代谢导致 破坏乙酰依赖的细胞信号传导并改变基因表达谱，导致近端 肾小管损伤和肾脏疾病。已知酒精代谢会改变许多生化途径 这会导致整个细胞的负面后果，包括改变基因重编程和细胞 死亡。因此，酒精诱导的蛋白质乙酰化可能是这些变化的关键初始驱动因素， 下游肾脏病理，例如近端肾小管功能障碍。因此，我们提出了一种创新的 研究酒精中毒如何引起肾脏损害的方法。我们将调查拟议的 具体目标：具体目标 1：确定长期饮酒如何改变肾组蛋白乙酰化 使用组织空间转录组学进行概况和基因表达。具体目标 2：检查改变的近端 慢性酒精代谢引起的肾小管病理​​学和蛋白质组活性。这些目标将是 采用多学科方法进行询问，该方法将整合病理分析、定量质量 用于蛋白质组学、酶分析和组织形态基因表达的光谱测定，以及创新 数据分析和生物信息学。这项研究的一个关键成果将是加深对 酒精代谢影响肾功能的机制，以进一步治疗干预和 改善肾脏疾病。