Mechanisms Controlling BubR1 Regulation of Cancer and Aging
BubR1 调节癌症和衰老的控制机制
基本信息
- 批准号:9897456
- 负责人:
- 金额:$ 12.39万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-09-30 至 2021-10-31
- 项目状态:已结题
- 来源:
- 关键词:AcetylationAddressAgeAgingAnaphaseAneuploidyAnimalsAutomobile DrivingBirthCaloric RestrictionCell AgingCellsChromosome SegregationChromosomesDeacetylaseDeacetylationDevelopmentDiseaseEngineeringEnsureExhibitsGenetic MaterialsGoalsHumanIn VitroIncidenceIndividualLightLinkLongevityMalignant NeoplasmsMammalsMediatingMetaphase PlateMitosisMitoticModificationMolecularMusMutationPathway interactionsPharmacologyPhenotypePhosphorylationPhysiologicalPlayPost-Translational Protein ProcessingPredispositionPremature aging syndromeProcessProtein-Serine-Threonine KinasesProteinsRegulationRisk FactorsRodent ModelRoleSignal PathwayTherapeuticTissuesTumor Suppressor ProteinsUbiquitinationage relatedagedcancer therapygenome integrityin vivomouse modeloverexpressionpleiotropismpreventsegregationsenescencetherapeutic targettumortumorigenesis
项目摘要
Abstract:
The goal of this proposal is to elucidate the molecular mechanisms governing BubR1 protein abundance and
function, and its role in the regulation of tumorigenesis and aging. Aging is the single greatest risk factor for
cancer development, yet the mechanistic basis driving this interrelationship remains largely undefined. BubR1,
a serine/threonine protein kinase, is involved in the spindle assembly checkpoint (SAC) to ensure faithful
chromosome segregation during mitosis, and therefore is intimately linked to genomic integrity and cancer.
Interestingly, recent studies have implicated BubR1 in the aging process where BubR1 abundance has been
shown to decline in a variety of tissues as mammals age. Mice engineered to express low levels of BubR1
from birth die within a year, exhibiting increased senescence, premature aging phenotypes and an increased
susceptibility to cancer, whereas mice overexpressing BubR1 have an extended lifespan with reduction in age-
related diseases and cancer development. Senescence is believed to be largely tumor-suppressive and
prevent cancer in young individuals. However, in aged individuals senescent cells can contribute to age-related
cancer development. Therefore, BubR1 may play a pivotal role in the interrelationship between aging and
cancer given that BubR1 suppresses both senescence and tumorigenesis. Previously, we identified an
acetylation-dependent mechanism regulating BubR1 protein stability, where SIRT2 prevents degradation of
BubR1 through deacetylation, leading to lifespan extension of a BubR1 premature aging mouse model.
Furthermore, BubR1 protein levels in aged animals can be restored to youthful levels by stimulating SIRT2
activity through induction of NAD+ levels. These results suggest that the age-related decline in BubR1 levels
can be reversed, potentially alleviating age-related diseases including cancer. Therefore, we hypothesize that
BubR1 is a key tumor suppressor, and its loss with age increases cancer susceptibility. In this proposal, we
plan to: 1) elucidate the physiological role of BubR1 post translational modifications during aging and calorie
restriction and their impact on mitotic progression and tumorigenesis; and 2) determine the mechanisms
regulating BubR1 protein abundance and function during aging. These studies will elucidate how regulation of
BubR1 by post-translational modifications controls mitotic progression and tumorigenesis during aging as well
as to identify mechanisms through which BubR1 declines with age and controls the aging processes. Given
that aging poses the largest single risk factor for developing cancer, elucidating the molecular details governing
the physiological role of BubR1 in cancer and aging will provide mechanistic understanding of the
interrelationship between aging and cancer development, as well as identify possible therapeutic strategies to
treat age-related diseases.
抽象的:
该提案的目的是阐明有关BubR1蛋白质丰度的分子机制和
功能及其在调节肿瘤发生和衰老中的作用。衰老是最大的风险因素
癌症发展,但是推动这种相互关系的机械基础仍然很大不确定。 bubr1,
丝氨酸/苏氨酸蛋白激酶参与主轴组件检查站(SAC),以确保忠实
有丝分裂过程中的染色体分离,因此与基因组完整性和癌症密切相关。
有趣的是,最近的研究已涉及BUBR1在BUBR1丰度的衰老过程中
随着哺乳动物的年龄,显示出多种组织的下降。设计为表达低水平的BUBR1的小鼠
从出生死亡一年之内,表现出衰老的增加,过早的衰老表型和增加
对癌症的敏感性,而过表达BUBR1的小鼠的寿命延长,年龄降低 -
相关疾病和癌症发展。据信,衰老在很大程度上是肿瘤抑制的
预防年轻人的癌症。但是,在老年人中,衰老细胞可能有助于与年龄有关
癌症发展。因此,bubr1可能在衰老和衰老之间的相互关系中起关键作用
鉴于BUBR1抑制了衰老和肿瘤发生,癌症。以前,我们确定了
乙酰化依赖性机制调节BUBR1蛋白稳定性,其中SIRT2防止降解
BUBR1通过脱乙酰化,导致BUBR1过早老化小鼠模型的寿命延长。
此外,通过刺激SIRT2,可以将老年动物的BUBR1蛋白水平恢复到年轻水平
通过诱导NAD+水平的活动。这些结果表明BUBR1水平与年龄相关的下降
可以逆转,可能减轻包括癌症在内的与年龄有关的疾病。因此,我们假设
BUBR1是一种关键的肿瘤抑制剂,其随着年龄的增长会增加癌症的敏感性。在这个建议中,我们
计划:1)阐明衰老和卡路里翻译后BUBR1的生理作用
限制及其对有丝分裂进展和肿瘤发生的影响; 2)确定机制
调节衰老过程中BUBR1蛋白丰度和功能。这些研究将阐明如何调节
BUBR1通过翻译后修饰控制了衰老期间有丝分裂进展和肿瘤发生
为了确定BUBR1随着年龄而下降并控制衰老过程的机制。给出
这种衰老是发展癌症的最大单一危险因素,阐明了分子细节
BUBR1在癌症和衰老中的生理作用将提供机械理解
衰老与癌症发展之间的相互关系,并确定可能的治疗策略
治疗与年龄有关的疾病。
项目成果
期刊论文数量(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Regulation of topoisomerase II stability and activity by ubiquitination and SUMOylation: clinical implications for cancer chemotherapy.
- DOI:10.1007/s11033-021-06665-7
- 发表时间:2021-09
- 期刊:
- 影响因子:2.8
- 作者:Ma Y;North BJ;Shu J
- 通讯作者:Shu J
Physiological relevance of post-translational regulation of the spindle assembly checkpoint protein BubR1.
纺锤体组装检查点蛋白 BubR1 翻译后调节的生理相关性。
- DOI:10.1186/s13578-021-00589-2
- 发表时间:2021-04-23
- 期刊:
- 影响因子:7.5
- 作者:Bloom CR;North BJ
- 通讯作者:North BJ
Unraveling the Molecular Nexus between GPCRs, ERS, and EMT.
- DOI:10.1155/2021/6655417
- 发表时间:2021
- 期刊:
- 影响因子:4.6
- 作者:Kumari N;Reabroi S;North BJ
- 通讯作者:North BJ
Cullin 3SPOP ubiquitin E3 ligase promotes the poly-ubiquitination and degradation of HDAC6.
- DOI:10.18632/oncotarget.18141
- 发表时间:2017-07-18
- 期刊:
- 影响因子:0
- 作者:Tan Y;Ci Y;Dai X;Wu F;Guo J;Liu D;North BJ;Huo J;Zhang J
- 通讯作者:Zhang J
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Brian J. North其他文献
E3 ubiquitin ligases in cancer stem cells: key regulators of cancer hallmarks and novel therapeutic opportunities
癌症干细胞中的 E3 泛素连接酶:癌症标志和新治疗机会的关键调节因子
- DOI:
10.1007/s13402-023-00777-x - 发表时间:
2023 - 期刊:
- 影响因子:6.6
- 作者:
Qiang Zou;Meng Liu;Kewei Liu;Yi Zhang;Brian J. North;Bin Wang - 通讯作者:
Bin Wang
Measurement of mammalian histone deacetylase activity.
哺乳动物组蛋白脱乙酰酶活性的测量。
- DOI:
10.1016/s0076-6879(03)77010-4 - 发表时间:
2004 - 期刊:
- 影响因子:0
- 作者:
E. Verdin;F. Dequiedt;W. Fischle;Roy A. Frye;Brett L Marshall;Brian J. North - 通讯作者:
Brian J. North
Conclusions and Research Perspectives
结论和研究观点
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Pengda Liu;Brian J. North;H. Inuzuka;Wenyi Wei - 通讯作者:
Wenyi Wei
The Class III Protein Deacetylases
III 类蛋白质脱乙酰酶
- DOI:
10.1385/1-59745-024-3:237 - 发表时间:
2006 - 期刊:
- 影响因子:0
- 作者:
B. Schwer;Brian J. North;N. Ahuja;Brett L Marshall;E. Verdin - 通讯作者:
E. Verdin
Brian J. North的其他文献
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{{ truncateString('Brian J. North', 18)}}的其他基金
Regulatory Mechanisms Governing BubR1 Protein Stability During Stress and Aging
压力和衰老过程中 BubR1 蛋白稳定性的调控机制
- 批准号:
10419290 - 财政年份:2022
- 资助金额:
$ 12.39万 - 项目类别:
Regulatory Mechanisms Governing BubR1 Protein Stability During Stress and Aging
压力和衰老过程中 BubR1 蛋白稳定性的调控机制
- 批准号:
10624953 - 财政年份:2022
- 资助金额:
$ 12.39万 - 项目类别:
Characterizing upstream regulators of glucosylceramide metabolism for Parkinson's disease and Lewy Body Dementia
帕金森病和路易体痴呆的葡萄糖神经酰胺代谢上游调节因子的特征
- 批准号:
10323690 - 财政年份:2021
- 资助金额:
$ 12.39万 - 项目类别:
Mechanisms Controlling BubR1 Regulation of Cancer and Aging
BubR1 调节癌症和衰老的控制机制
- 批准号:
9353713 - 财政年份:2016
- 资助金额:
$ 12.39万 - 项目类别:
Mechanisms Controlling BubR1 Regulation of Cancer and Aging
BubR1 调节癌症和衰老的控制机制
- 批准号:
9180131 - 财政年份:2016
- 资助金额:
$ 12.39万 - 项目类别:
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