Generation of Diverse Centrosomes, Cilia and Flagellae During Development
发育过程中多种中心体、纤毛和鞭毛的产生
基本信息
- 批准号:10590581
- 负责人:
- 金额:$ 50.21万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2020
- 资助国家:美国
- 起止时间:2020-05-15 至 2025-01-31
- 项目状态:未结题
- 来源:
- 关键词:AffectApplied GeneticsBiologyBrainCell CycleCell LineCell divisionCellsCentriolesCentrosomeCerebral cortexCiliaCilium MicrotubuleComplexCultured CellsCytoplasmDefectDevelopmentDiseaseDrosophila genusEukaryotaFlagellaFoundationsFunctional disorderFutureG2 PhaseGenerationsGeneticGerm LinesGrowthHeritabilityHumanInheritedInterphaseLeadLegLengthLightMalignant NeoplasmsMeiosisMicrocephalyMicrotubule TripletMicrotubulesMitosisMolecularMolecular BiologyMotionMutagenesisMutationNomenclatureOrganOrganellesPathologyPathway interactionsPatientsPhosphorylationPhysiologyPilot ProjectsProcentrioleProcessPrognosisProteinsResearchRoleSet proteinSignal TransductionSomatic CellSpecific qualifier valueSpermatocytesSpermatogenesisStructureTestingTissuesWorkbrain abnormalitiescell typeciliopathycilium biogenesisgenetic approachhuman diseaseimaginal disckinetosomemalemanneurosensoryorganizational structureprotein functionrecruitsperm cellstem cellsstructural biology
项目摘要
PROJECT SUMMARY
Centrioles are required to template cilia and flagella and to organize centrosomes that nucleate
cytoplasmic microtubules in interphase and dividing cells. Centrosomes lose their ability to organise
cytoplasmic microtubules when they become basal bodies, which can template the formation of
primary cilia for signalling or flagellae for propelling sperm. To understand these diverse roles, it
necessary to study centrioles in the development of different cell types. Yet, their replication, structure
and function has been largely studied in cultured cells. Here we take advantage of the genetic and
developmental advantages of Drosophila to study centriole function in two cell types; cells destined to
make neurosensory cilia in the leg imaginal disc and male germ line cells destined to generate sperm.
Our focus is on the roles of a network of centriole proteins in which Ana3, counterpart of human
ROTATIN and Rcd4, PPP1R35 in human cells, interact with each other and with a set of proteins
required for various steps of the elongation and maturation of the centriole necessary for it to become
a basal body. Specifically, we will: (i) apply molecular and structural biology approaches to determine
how the Ana3 and Rcd4 proteins interact with each other and with other centriole proteins to specify
different aspects of centriole assembly and function and how this is regulated by phosphorylation. We
will test the functions of these interactions through directed mutagenesis. (ii) use genetic approaches
to determine inter-dependencies of the networks that regulate centriole elongation in the conventional
cell division cycles of cultured cells and the leg imaginal disc and in cells that develop neurosensory
cilia. (iii) determine the differential roles of Rcd4 and Ana3 and their interacting network of proteins in
the multiple steps leading to formation of the giant centrioles of spermatocytes and their sequential
roles in generating primary cilia and subsequently sperm flagellae.,
Because centriole duplication pathways are highly conserved between Drosophila and man, our findings
will shed light onto a wide range of human diseases including cancer, where centrosome defects indicate
poor prognosis; heritable ciliopathies, which affect centrioles and cilia in a wide range of tissues; and in
microcephaly, where defects in proteins such as ROTATIN, whose counterpart we study here, lead to
abnormal brain development.
项目总结
需要中心粒来模式化纤毛和鞭毛,并组织成核的中心体
间期和分裂细胞中的细胞质微管。中心体失去了组织能力
当细胞质微管成为基底体时,它可以模板化形成
初级纤毛用于发出信号或鞭毛用于推动精子。为了理解这些不同的角色,它
有必要研究不同细胞类型发育过程中的中心粒。然而,它们的复制、结构
在培养的细胞中对其功能进行了大量研究。在这里,我们利用基因和
果蝇在两种细胞类型中研究中心粒功能的发育优势;细胞注定
使神经感觉纤毛在腿的想象盘和雄性生殖线细胞中注定要产生精子。
我们的重点是中心粒蛋白网络的作用,其中Ana3,人类的对应物
在人类细胞中,ROTATIN和RCD4、PPP1R35相互作用,并与一系列蛋白质相互作用
中心粒的伸长和成熟的各个步骤所必需的
一个基本的身体。具体地说,我们将:(I)应用分子和结构生物学方法来确定
Ana3和Rcd4蛋白如何相互作用以及如何与其他中心粒蛋白相互作用以指定
中心粒组装和功能的不同方面,以及这是如何通过磷酸化来调节的。我们
将通过定向突变来测试这些相互作用的功能。(2)使用遗传方法
为了确定在常规方法中调节中心粒伸长的网络的相互依赖性
培养细胞和腿部成像盘以及发育神经感觉的细胞的细胞分裂周期
纤毛。(Iii)确定Rcd4和Ana3的不同作用及其相互作用的蛋白质网络
精母细胞巨型中心粒形成的多步骤及其序列
在初生纤毛和随后的精子鞭毛的产生中的作用。
由于中心粒复制途径在果蝇和人类之间高度保守,我们的发现
将揭示包括癌症在内的广泛的人类疾病,中心体缺陷表明
预后不良;遗传性纤毛病,影响广泛组织中的中心粒和纤毛;
小头畸形症,在这种情况下,蛋白质的缺陷,如我们在这里研究的RoTATIN,会导致
大脑发育异常。
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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David M Glover其他文献
RNA interference by production of short hairpin dsRNA in ES cells, their differentiated derivatives, and in somatic cell lines.
通过在 ES 细胞、其分化衍生物和体细胞系中产生短发夹 dsRNA 进行 RNA 干扰。
- DOI:
- 发表时间:
2003 - 期刊:
- 影响因子:2.7
- 作者:
J. Grabarek;Florence Wianny;B. Płusa;Magdalena Zernicka;David M Glover - 通讯作者:
David M Glover
David M Glover的其他文献
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{{ truncateString('David M Glover', 18)}}的其他基金
Generation of Diverse Centrosomes, Cilia and Flagellae During Development
发育过程中多种中心体、纤毛和鞭毛的产生
- 批准号:
10337138 - 财政年份:2020
- 资助金额:
$ 50.21万 - 项目类别:
Common Regulatory Pathways for the Genesis of Lysosome-Related Organelles and Dynamics of Microtubules during Development
溶酶体相关细胞器的起源和发育过程中微管动力学的常见调控途径
- 批准号:
10099427 - 财政年份:2020
- 资助金额:
$ 50.21万 - 项目类别:
Generation of diverse centrosomes, cilia and flagellae during development
发育过程中产生不同的中心体、纤毛和鞭毛
- 批准号:
10163281 - 财政年份:2020
- 资助金额:
$ 50.21万 - 项目类别:
Common Regulatory Pathways for the Genesis of Lysosome-Related Organelles and Dynamics of Microtubules during Development
溶酶体相关细胞器的起源和发育过程中微管动力学的常见调控途径
- 批准号:
10684931 - 财政年份:2020
- 资助金额:
$ 50.21万 - 项目类别:
Common Regulatory Pathways for the Genesis of Lysosome-Related Organelles and Dynamics of Microtubules during Development
溶酶体相关细胞器的起源和发育过程中微管动力学的常见调控途径
- 批准号:
10269015 - 财政年份:2020
- 资助金额:
$ 50.21万 - 项目类别: