Assembly and function of cytoskeletal systems in eukaryotic and prokaryoticcells

真核和原核细胞中细胞骨架系统的组装和功能

• 批准号: 10385786
• 负责人: R DYCHE MULLINS
• 金额: $ 48.45万
• 依托单位: UNIVERSITY OF CALIFORNIA, SAN FRANCISCO
• 依托单位国家: 美国
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-04-15 至 2026-03-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10385786
• 关键词: 2019-nCoV; Actins; Address; Archaea; Architecture; Autophagocytosis; Biochemical; Biological; Biophysics; Biopolymers; Cells; Cellular Structures; Cellular biology; Complex; Cytoskeleton; DNA Repair; Defect; Development; Elements; Eubacterium; Filopodia; Goals; Immune; In Vitro; International; Laboratories; Locomotion; Macromolecular Complexes; Microscopic; Microscopy; Molecular; Molecular Structure; Motor; Movement; Neoplasm Metastasis; Nuclear; Pathologic; Play; Polymers; Property; Regulation; Resolution; Shapes; Viral; Virus Diseases; Work; molecular assembly/self assembly; reconstitution; self assembly; single molecule

Project Summary/Abstract My laboratory pursues answers to fundamental questions in cell biology. Broadly, we study how self-assembly of complex macromolecular structures —especially cytoskeletal polymers and networks— creates spatial order in living cells. To understand how molecular properties govern the architecture and function of living cells, we perform quantitative studies at multiple size scales: (i) single-molecule and bulk biochemical studies of cytoskeletal components; (ii) biophysical and microscopical studies of complex cellular structures reconstituted in vitro; and (iii) cell biological and high-resolution microscopy studies of cytoskeletal systems in living cells. Our work currently addresses the following topics: (1) function and regulation of actin network motors that make use of the Arp2/3 complex; (2) pseudopod assembly and amoeboid locomotion; (3) autophagy and endomembrane movement; (4) nuclear actin assembly and DNA repair; and (5) assembly and function of cytoskeletal elements in eubacteria and archaea. As part of an international consortium we have also recently begun work to understand how SARS-CoV2 induces formation of long, branched filopodia in infected host cells and what function these filopodia play in viral egress and spread.

项目概要/摘要 我的实验室致力于细胞生物学基本问题的答案。从广义上讲，我们研究自组装如何 复杂的大分子结构——尤其是细胞骨架聚合物和网络——创造了空间秩序 在活细胞中。为了了解分子特性如何控制活细胞的结构和功能，我们 在多个尺寸尺度上进行定量研究：（i）单分子和批量生化研究 细胞骨架成分； (ii) 重建复杂细胞结构的生物物理和显微镜研究 体外; (iii) 活细胞中细胞骨架系统的细胞生物学和高分辨率显微镜研究。 我们的工作目前涉及以下主题：（1）肌动蛋白网络马达的功能和调节 利用 Arp2/3 复合体； (2)伪足组装和变形虫运动； (3)自噬和 内膜运动； (4)核肌动蛋白组装和DNA修复； (5) 的组装和功能 真细菌和古细菌中的细胞骨架元件。作为国际联盟的一部分，我们最近还 开始研究 SARS-CoV2 如何诱导受感染宿主细胞形成长的、分支的丝状伪足 这些丝状伪足在病毒的排出和传播中发挥什么作用。