Proteomics approaches for illuminating the functions of the dark kinases Nek6, Nek7 & Nek9

阐明暗激酶 Nek6、Nek7 功能的蛋白质组学方法

• 批准号: 10216469
• 负责人: Scott A. Gerber
• 金额: $ 16.4万
• 依托单位: DARTMOUTH COLLEGE
• 依托单位国家: 美国
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-05-01 至 2023-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10216469
• 关键词: Address; Aspergillus; Aspergillus nidulans; Auxins; Biochemical; Biological Assay; Biological Process; Biology; Breast; CRISPR/Cas technology; Cell Cycle; Cell Line; Cell division; Cells; Chemicals; Chromosome Condensation; Colon; Communities; Complex; Congenital Abnormality; Coupled; Cytokinesis; Data; Diabetes Mellitus; Disease; Emerging Technologies; Exhibits; Failure; Family; Fibroblasts; Funding Mechanisms; G2 Phase; Gene Deletion; Gene Expression; Genes; Genetic; Genetic Engineering; Goals; Hela Cells; Hour; Human; In Vitro; Industry; Knock-in; Knowledge; Light; Link; Liver; Lung; Malignant Neoplasms; Mass Spectrum Analysis; Methods; Microtubules; Mitosis; Mitotic; Molecular Target; Mutation; Nerve Degeneration; Ovarian; PLK1 gene; Pathway interactions; Pharmacotherapy; Phase; Phenotype; Phosphorylation; Phosphotransferases; Post-Translational Protein Processing; Prostate; Protein Array; Protein Kinase; Proteins; Proteomics; RNA Interference; Regulation; Research; Research Personnel; Rest; Role; Severities; Severity of illness; Signal Pathway; Signal Transduction; Sister Chromatid; Stomach; Technology; Therapeutic Intervention; Time; Tissues; analog; base; chemical genetics; ciliopathy; cilium biogenesis; experimental study; genetic approach; genome sequencing; human disease; improved; inhibitor/antagonist; interest; loss of function; mutant; online resource; overexpression; phosphoproteomics; premature; protein degradation; repaired; segregation; small molecule inhibitor; therapy resistant

ABSTRACT Mitosis is a dynamic and tightly regulated cell cycle phase that spans chromosome condensation, spindle formation, sister chromatid separation and segregation, and cytokinesis; the failure of cells to successfully navigate these diverse biological functions underlies many human diseases including birth defects and cancer. The orchestration of these functions is accomplished by a complex array of protein kinase signaling, including the understudied NIMA-related kinases Nek6, Nek7 and Nek9. Although gene depletion studies have implicated these Nek kinases in cell division and cytokinesis, the biochemical mechanisms by which they function remain unresolved. Thus, new research that uncovers the regulation and downstream effectors of Nek6, Nek7 and Nek9 functions has the potential to both improve our basic understanding of cell division biology as well as identify new entry points for therapeutic intervention in human disease. Here, we propose to develop and deploy targeted protein degradation coupled with mass spectrometry- based proteomics to discover new substrates and signaling networks that are regulated by Nek6, Nek7 and Nek9 kinase activities. Using a combination of CRISPR/Cas9-based targeting strategies, homology-directed repair and genetic engineering, we will knock-in a short degron tag at endogenous loci for these kinases in cell lines of diverse genetic and tissue origin. We will then employ quantitative proteomics methods to identify protein phosphorylation loci that exhibit differential occupancy upon rapid depletion of the respective Nek kinase. We expect these experiments will shed new light on the mechanisms that define cell division and will additionally serve as a roadmap for illuminating the rest of the understudied kinome.

抽象的 有丝分裂是一个动态且严格调控的细胞周期阶段，跨越染色体浓缩、纺锤体 形成、姐妹染色单体分离和隔离以及胞质分裂；细胞未能成功 驾驭这些不同的生物功能是许多人类疾病的基础，包括出生缺陷和癌症。 这些功能的协调是通过一系列复杂的蛋白激酶信号传导来完成的，包括 尚未研究的 NIMA 相关激酶 Nek6、Nek7 和 Nek9。尽管基因缺失研究表明 这些 Nek 激酶参与细胞分裂和胞质分裂，但它们发挥作用的生化机制仍然存在 未解决。因此，新的研究揭示了 Nek6、Nek7 和 Nek9 的调控和下游效应子 功能有可能提高我们对细胞分裂生物学的基本理解以及识别 人类疾病治疗干预的新切入点。 在这里，我们建议开发和部署与质谱联用的靶向蛋白质降解- 基于蛋白质组学来发现受 Nek6、Nek7 和 Nek9 调控的新底物和信号网络 激酶活性。结合使用基于 CRISPR/Cas9 的靶向策略，同源定向修复 和基因工程，我们将在细胞系中的这些激酶的内源位点敲入一个短的降解决定子标签 不同的遗传和组织起源。然后我们将采用定量蛋白质组学方法来鉴定蛋白质 磷酸化位点在快速耗尽各自的 Nek 激酶时表现出不同的占据。我们 预计这些实验将为定义细胞分裂的机制提供新的线索，并且另外 作为阐明其余未被充分研究的激酶组的路线图。