Mechanisms of Sister Telomere Cohesion and Resolution
Mechanisms of Sister Telomere Cohesion and Resolution
批准号:
10187594
负责人:
SUSAN SMITH
金额:
$38.14万
依托单位国家:
美国
项目类别:
财政年份:
2007
资助国家:
美国
项目状态:
已结题
起止时间:
2007-05-01 至 2023-06-30
关键词:
BiogenesisCell physiologyCellsChromosomesDNADNA DamageDataDefectExhibitsFunctional disorderGenesGenetic RecombinationGenomeGenome StabilityGenomic InstabilityGrantHeterochromatinHumanHuman ChromosomesHuman GenomeInvestigationLeadMediatingMitosisMolecularPathologyPeripheralPlayPoly(ADP-ribose) PolymerasesProteinsProteomePublishingRecombinant DNARepetitive SequenceResearch Project GrantsResolutionRestRibosomal DNARibosomal RNARibosomesRoleSisterSister ChromatidTERF1 geneTINF2 geneTankyraseTimeWorkarmchromatin immunoprecipitationcohesincohesiongenome integrityinsightnovelprematurepreventrecombinational repairrepairedtelomere
中文摘要
项目总结:
端粒和核糖体DNA序列对于染色体的基本功能和保护机制都是至关重要的。
分别是核糖体和生物发生。同时,它们各自构成了生物的主要和重复的结构域。
基因组序列可能会导致基因组序列的不稳定。重复的DNA序列会给基因组的复制带来巨大的挑战。
不能导致分叉的机械设备会拖延时间,导致DNA损坏。这些损坏不能通过定向同源操作来修复。
重组和修复是在复制后利用姐妹染色单体之间的凝聚力。
对于这种基因修复来说,这是至关重要的。凝聚力对于重复的DNA序列来说尤其重要,这有助于保持它们的一致性和一致性。
为了防止重组,需要使用非姐妹染色单体。虽然它是一种公认的方法,但也不需要粘附素和环。
为了在宏观层面上更好地将姐妹染色单体联系在一起,目前尚不清楚这两个姐妹如何进行更密切的政治接触,尤其是。
对于重复的DNA所需的数据,这些都是人工调解的。我们的团队在这份提案中公布了他们的工作成果和初步的数据。
这表明,这两个必不可少的重复基因结构域(端粒和rDNA)可能已经形成了一个共同的治疗机制。
控制姐妹染色单体的凝聚力,这与人类基因组的其他部分是截然不同的。这一新的研究项目正在建立。
根据我们最近的一项研究发现,(A)在端粒和凝聚力的形成过程中,凝集素的作用有限,因此这是一种新奇的现象。
蛋白质和其他机制都涉及到,而rDNA和凝聚力则由与之相同的机制来管理。
端粒。我们将继续对端粒、凝聚力和GO进行调查,这是第一个目标中的第一部分。
更深入地研究我们已经证明不需要的蛋白质所使用的新机制,并识别新的蛋白质。
在第二章的第二部分中,我们将通过进一步调查核糖核酸的凝聚力来开辟新的道路。
数组。将这些研究结合在一起,将为我们提供更深入的见解,了解这些至关重要且重复的领域是如何管理企业的。
密切的分子生物学联系是基因组和完整性所必需的,以及他们的基因功能障碍是如何导致癌症的。
基因组不稳定与病理改变。
英文摘要
Project Summary
Telomeres and rDNA are each crucial for the basic cellular functions of chromosome end protection and
ribosome biogenesis, respectively. At the same time, they each constitute major repetitive domains of the
genome that can contribute to genomic instability. Repetitive sequences pose challenges to the replication
machinery that can lead to fork stalling and DNA damage. Damage can be repaired by homology directed
recombination and repair using the sister chromatid following replication. Cohesion between sister chromatids
is essential for this repair. Cohesion is particularly important for repetitive sequences, to keep them aligned and
to prevent recombination with non-sister chromatids. While it is well established that cohesin rings are required
to hold sister chromatids together at the macro level, it is not clear how the more intimate contacts, particularly
those required for repetitive DNA, are mediated. Our published work and preliminary data in this proposal
indicate that these two essential repetitive domains (telomeres and rDNA) may have a common mechanism for
controlling sister chromatid cohesion that is distinct from the rest of the genome. This research project builds
on our recent discovery that a) the cohesin ring plays a limited role in telomere cohesion and thus novel
proteins and mechanisms are involved and b) rDNA cohesion is governed by the same mechanism as
telomeres. In the first part of the grant in Aim 1 we will continue our investigation of telomere cohesion and go
deeper into the mechanisms used by the proteins that we have shown are required and identify new proteins.
In the second part of the grant in Aim 2 we will break new ground by investigating cohesion of the rDNA
arrays. Together these studies will provide insight into how these essential repetitive domains manage the
intimate molecular connections that are required for genome integrity and how their dysfunction contributes to
genome instability and pathology.
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DOI:
10.1083/jcb.200810132
发表时间:
2009-02-23
期刊:
The Journal of cell biology
影响因子:
--
作者:
[Hsiao SJ, Smith S]
通讯作者:
Smith S
DOI:
10.1101/gad.316042.118
发表时间:
2018-05-01
期刊:
Genes & development
影响因子:
10.5
作者:
[Smith S]
通讯作者:
Smith S
DOI:
10.1091/mbc.e13-08-0479
发表时间:
2014-01
期刊:
Molecular biology of the cell
影响因子:
3.3
作者:
[Kim MK, Smith S]
通讯作者:
Smith S
DOI:
10.1016/j.ccell.2015.08.003
发表时间:
2015-09-14
期刊:
Cancer cell
影响因子:
50.3
作者:
[Ramamoorthy M, Smith S]
通讯作者:
Smith S
Differential regulation of telomere and centromere cohesion by the Scc3 homologues SA1 and SA2, respectively, in human cells.
人类细胞中 Scc3 同源物 SA1 和 SA2 分别对端粒和着丝粒凝聚力进行差异调节。
DOI:
10.1083/jcb.200903096
发表时间:
2009-10-19
期刊:
The Journal of cell biology
影响因子:
--
作者:
[Canudas S, Smith S]
通讯作者:
Smith S
Mechanisms of Telomere Cohesion
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批准号:10622894
-
项目类别:
-
资助金额:$17.67万
-
财政年份:2023
-
负责人:SUSAN SMITH
-
依托单位:
A role for RNA in sister chromatid cohesion at human telomeres
-
批准号:10630053
-
项目类别:
-
资助金额:$42.36万
-
财政年份:2022
-
负责人:SUSAN SMITH
-
依托单位:
A role for RNA in sister chromatid cohesion at human telomeres
-
批准号:10364121
-
项目类别:
-
资助金额:$43.66万
-
财政年份:2022
-
负责人:SUSAN SMITH
-
依托单位:
Training Program in Cell Biology
-
批准号:10417126
-
项目类别:
-
资助金额:$62.44万
-
财政年份:2020
-
负责人:SUSAN SMITH
-
依托单位:
Training Program in Cell Biology
-
批准号:10189666
-
项目类别:
-
资助金额:$58.52万
-
财政年份:2020
-
负责人:SUSAN SMITH
-
依托单位:
Training Program in Cell Biology
-
批准号:10619567
-
项目类别:
-
资助金额:$63.66万
-
财政年份:2020
-
负责人:SUSAN SMITH
-
依托单位:
Regulation of telomere recombination in ALT cancer cells
-
批准号:9748731
-
项目类别:
-
资助金额:$0.28万
-
财政年份:2016
-
负责人:SUSAN SMITH
-
依托单位:
Regulation of telomere recombination in ALT cancer cells
-
批准号:9174657
-
项目类别:
-
资助金额:$38.77万
-
财政年份:2016
-
负责人:SUSAN SMITH
-
依托单位:
Regulation of telomere recombination in ALT cancer cells
-
批准号:9294009
-
项目类别:
-
资助金额:$38.77万
-
财政年份:2016
-
负责人:SUSAN SMITH
-
依托单位:
Genome Integrity Training Program
-
批准号:9303424
-
项目类别:
-
资助金额:$18.64万
-
财政年份:2015
-
负责人:SUSAN SMITH
-
依托单位:
Genome Integrity Training Program
-
批准号:9097777
-
项目类别:
-
资助金额:$18.44万
-
财政年份:2015
-
负责人:SUSAN SMITH
-
依托单位:
Genome Integrity Training Program
-
批准号:8932343
-
项目类别:
-
资助金额:$13.68万
-
财政年份:2015
-
负责人:SUSAN SMITH
-
依托单位:
Genome Integrity Training Program
-
批准号:9502994
-
项目类别:
-
资助金额:$18.85万
-
财政年份:2015
-
负责人:SUSAN SMITH
-
依托单位:
Mechanisms of Telomere Function
-
批准号:8761287
-
项目类别:
-
资助金额:$11.61万
-
财政年份:2013
-
负责人:SUSAN SMITH
-
依托单位:
Mechanisms of Sister Telomere Cohesion and Resolution
-
批准号:8685147
-
项目类别:
-
资助金额:$30.3万
-
财政年份:2007
-
负责人:SUSAN SMITH
-
依托单位:
Mechanisms of Sister Telomere Cohesion and Resolution
-
批准号:8870304
-
项目类别:
-
资助金额:$31.24万
-
财政年份:2007
-
负责人:SUSAN SMITH
-
依托单位:
Mechanisms of Sister Telomere Cohesion and Resolution
-
批准号:8526405
-
项目类别:
-
资助金额:$29.36万
-
财政年份:2007
-
负责人:SUSAN SMITH
-
依托单位:
Mechanisms of Sister Telomere Cohesion and Resolution
-
批准号:7567463
-
项目类别:
-
资助金额:$32.21万
-
财政年份:2007
-
负责人:SUSAN SMITH
-
依托单位:
Mechanisms of Sister Telomere Cohesion and Resolution
-
批准号:8302711
-
项目类别:
-
资助金额:$31.24万
-
财政年份:2007
-
负责人:SUSAN SMITH
-
依托单位:
Mechanisms of Sister Telomere Cohesion and Resolution
-
批准号:8033083
-
项目类别:
-
资助金额:$31.24万
-
财政年份:2007
-
负责人:SUSAN SMITH
-
依托单位:
海外基金