Cell polarity signaling in lifespan control
寿命控制中的细胞极性信号传导
基本信息
- 批准号:9754743
- 负责人:
- 金额:$ 19.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2018
- 资助国家:美国
- 起止时间:2018-08-15 至 2023-04-30
- 项目状态:已结题
- 来源:
- 关键词:AddressAffectAgeAgingBiosensorCandidate Disease GeneCell AgingCell PolarityCell ProliferationCell divisionCell physiologyCellsComplexComputer softwareDefectDevelopmentDiseaseEukaryotaEvolutionFoundationsGTPase-Activating ProteinsGene DeletionGenesGeneticGrowthGuanine Nucleotide Exchange FactorsGuanosine TriphosphateHematopoietic stem cellsHumanImageImage AnalysisIndividualInterventionKnowledgeLinkLongevityMalignant NeoplasmsMammalsMethodsMicrofluidic MicrochipsMicrofluidicsModelingMonitorMonomeric GTP-Binding ProteinsMorphogenesisMorphologyNeurodegenerative DisordersOrganismOutcomePatternPhasePhysiologicalProcessProteinsQuantitative MicroscopyRegulationReportingResearchRoleSaccharomycetalesSignal TransductionSiteSystemTestingTranslatingWorkYeast Model SystemYeastscell growth regulationgenetic analysishuman stem cellsimaging Segmentationin vivointerdisciplinary approachlive cell imagingmathematical modelprogramsrho GTP-Binding Proteins
项目摘要
Project Summary
Aging is a complex process that involves numerous physiological and morphological
changes. Although aging in multicellular organisms is inevitably more complex, the basic
mechanisms of cellular aging appear to be conserved across organisms ranging from the
single-celled yeast to mammals. Cell asymmetry and polarity are critical for cell
proliferation and development, and the loss of cell polarity and asymmetry has been
implicated in cellular aging. However, the causes of cellular aging remain poorly
understood. Cdc42, an evolutionally conserved Rho GTPase, is one of the key regulators
of cell polarity in diverse species including yeast and humans. While the mechanism
underlying Cdc42 polarization has been extensively investigated for its roles in the
establishment of cell polarity, the functional significance of the Cdc42 signaling in aging
has not been addressed. Here, we will use our expertise in the small GTPase field to
understand the spatial and temporal regulation of Cdc42 signaling during aging process.
In this proposal, we will test an unexplored concept that the intrinsic genetic program of
cell polarity and morphogenesis is linked to control of cellular lifespan using the tractable
budding yeast as a model. Specifically, we will explore how changes of positive and
negative regulation of Cdc42 during repeated cell divisions limit replicative lifespan by
combining methods in genetics and live-cell imaging in a microfluidic device. We will also
use mathematical modeling to predict underlying mechanisms leading to loss of Cdc42
polarization and thus limiting the cell division. The outcomes of this work will lay the
foundation for identifying a mechanism underlying cellular aging that will be also
applicable to other eukaryotes. Knowledge gained from this study will ultimately be
translatable to identifying candidate genes and processes in humans that are similarly
affected by aging.
项目摘要
衰老是一个复杂的过程,涉及到许多生理和形态
虽然多细胞生物的衰老不可避免地要复杂得多,但基本的
细胞衰老的机制似乎在生物体中是保守的,
单细胞酵母到哺乳动物。2细胞不对称性和极性对细胞
增殖和发育,以及细胞极性和不对称性的丧失,
然而,细胞衰老的原因仍然不清楚,
Cdc42是一种进化上保守的Rho GT3,是一种关键的调节因子,
在不同的物种中,包括酵母和人类。
潜在的Cdc42极化已被广泛研究其在
细胞极性的建立,Cdc42信号在衰老中的功能意义
在这里,我们将利用我们在小型GTcycle领域的专业知识,
了解衰老过程中Cdc42信号的时空调控。
在这个提议中,我们将测试一个未被探索的概念,即人的内在遗传程序,
细胞极性和形态发生与细胞寿命的控制有关,
芽殖酵母作为一个模型。具体来说,我们将探讨如何改变积极的和
Cdc42在重复细胞分裂过程中的负调节通过以下方式限制复制寿命:
结合遗传学方法和微流控装置中的活细胞成像。我们还将
使用数学建模来预测导致Cdc42丢失的潜在机制
极化,从而限制细胞分裂。这项工作的结果将奠定
为确定细胞衰老的潜在机制奠定了基础,
适用于其他真核生物。从这项研究中获得的知识将最终
可以转化为识别人类中与人类相似的候选基因和过程,
受老化影响。
项目成果
期刊论文数量(0)
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会议论文数量(0)
专利数量(0)
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{{ truncateString('Hay-Oak Park', 18)}}的其他基金
Spatial and temporal regulation of polarity establishment in budding yeast
芽殖酵母极性建立的时空调控
- 批准号:
9483392 - 财政年份:2015
- 资助金额:
$ 19.5万 - 项目类别:
Spatial and temporal regulation of polarity establishment in budding yeast
芽殖酵母极性建立的时空调控
- 批准号:
9258144 - 财政年份:2015
- 资助金额:
$ 19.5万 - 项目类别:
Spatial and temporal regulation of polarity establishment in budding yeast
芽殖酵母极性建立的时空调控
- 批准号:
9064778 - 财政年份:2015
- 资助金额:
$ 19.5万 - 项目类别:
Regulation of polarized cell growth by GTPases
GTPases 对极化细胞生长的调节
- 批准号:
7893918 - 财政年份:2009
- 资助金额:
$ 19.5万 - 项目类别:
Regulation of polarized cell growth by GTPases
GTPases 对极化细胞生长的调节
- 批准号:
7015774 - 财政年份:2006
- 资助金额:
$ 19.5万 - 项目类别:
Regulation of polarized cell growth by GTPases
GTPases 对极化细胞生长的调节
- 批准号:
7334779 - 财政年份:2006
- 资助金额:
$ 19.5万 - 项目类别:
Regulation of polarized cell growth by GTPases
GTPases 对极化细胞生长的调节
- 批准号:
7163482 - 财政年份:2006
- 资助金额:
$ 19.5万 - 项目类别:
Regulation of polarized cell growth by GTPases
GTPases 对极化细胞生长的调节
- 批准号:
7576088 - 财政年份:2006
- 资助金额:
$ 19.5万 - 项目类别:
SPATIAL CONTROL OF CELL POLARITY DURING YEAST BUDDING
酵母出芽过程中细胞极性的空间控制
- 批准号:
2752352 - 财政年份:1999
- 资助金额:
$ 19.5万 - 项目类别:
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