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.
项目总结:
--
衰老是一个非常复杂的过程,它涉及到众多的生理指标和形态指标。
变化。尽管多细胞生物体中的衰老过程不可避免地变得更加复杂,但这是最基本的变化。
细胞衰老的机制似乎在从生物到生物的各种生物中似乎都不是很保守的。
单细胞酵母菌对哺乳动物的影响很大。单细胞的不对称性和单细胞的极性对细胞生长至关重要。
细胞的增殖和发育,以及细胞的极性和不对称性的严重损失一直没有得到解决。
与细胞衰老有关。然而,导致细胞衰老的主要原因仍然很差。
明白。CDC42是进化上保守的Rho和GTPase的成员,也是最关键的生物监管机构之一。
细胞的极性存在于不同的物种中,包括酵母菌和人类。同时还发现了这一机制。
潜在的CDC42和两极分化问题一直因其在危机中扮演的主要角色而受到广泛调查。
细胞极性的建立,说明了CDC42信号通路在衰老中的重要功能和意义。
还没有得到很好的解决。在这里,我们将继续利用我们在全球小型GTPase领域的专业知识。
了解衰老过程中CDC42信号传导的空间分布和时间分布规律。
在这项新的提案中,我们将首先测试一个未被探索的概念,该概念是人类基因工程的内在基础。
细胞的极性和形态发生与控制细胞的寿命有关,使用最易处理的方法。
发芽酵母菌是一种新的模式。具体地说,我们将继续探索如何改变这种积极的环境和环境。
在反复的细胞分裂过程中,对cdc42基因的负调控效应将限制可复制的细胞寿命。
将遗传学研究中的方法与活细胞成像技术相结合,开发了一种新型微流控成像设备。我们还将继续研究。
使用数学建模方法来预测导致CDC42亏损的潜在风险机制。
因此,两极分化限制了细胞和细胞的分裂。但这项工作的主要成果将取决于未来。
基金会负责为潜在的细胞衰老问题确定一种新的机制,这一机制也将得到解决。
适用于其他非真核生物。从这项研究中获得的知识最终将不会被发现。
可以翻译的是,如何识别人类的候选基因和过程,这些基因和过程也是如此。
受年龄增长的影响。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
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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