Promotion of satellite cell proliferation by cAMP signaling
cAMP 信号传导促进卫星细胞增殖
基本信息
- 批准号:9884731
- 负责人:
- 金额:$ 38.54万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-03-04 至 2024-02-29
- 项目状态:已结题
- 来源:
- 关键词:Activator AppliancesAcuteAdultAgingAreaBiochemicalBiochemical GeneticsCREB1 geneCREBBP geneCell NucleusCell ProliferationChIP-seqComplexCoupledCyclic AMPCyclic AMP-Responsive DNA-Binding ProteinElderlyEmbryoEmbryonic DevelopmentG-Protein-Coupled ReceptorsGene ActivationGenesGeneticGenetic TranscriptionGoalsHealthIn VitroIndividualInjuryKnock-inKnockout MiceLigandsMaintenanceMass Spectrum AnalysisMolecularMusMuscleMuscle FibersMuscle functionMuscle satellite cellMuscular DystrophiesMyoblastsMyopathyNatural regenerationPathway interactionsPatientsPharmacologyPopulationPost-Translational Protein ProcessingProliferatingRegulationRoleSignal PathwaySignal TransductionSignaling ProteinSkeletal MuscleSkeletal Muscle Satellite CellsTestingTranscription Coactivatorage relatedchemical geneticsdesigner receptors exclusively activated by designer drugsgain of functiongenomic profilesimprovedin vitro testingin vivoin vivo regenerationinnovationinsightmuscle formmuscle regenerationmutantnew therapeutic targetoverexpressionpreservationprogenitorprogramspromoterrecruitrelease factorresponseresponse to injurysarcopeniasatellite cellskeletal disorderskeletal muscle wastingstem cell populationstem cell proliferationstem cellstooltranscription factortranscriptome sequencingtranscriptomics
项目摘要
SUMMARY
Skeletal muscle regeneration requires activation and proliferation of a resident population of stem cells known
as satellite cells. Satellite cells are not only required for muscle regeneration after injury but are also thought to
contribute to ongoing maintenance of muscle mass. Unfortunately, the number and activity of these progenitors
declines with aging and muscular dystrophy. Therefore, pharmacologic strategies to promote expansion of
myogenic satellite cells could potentially be used to improve muscle regeneration and preserve muscle function
in individuals with muscle disease or individuals of advanced age. Signaling through the cAMP pathway
stimulates myogenic progenitor cell proliferation during embryonic development and is sufficient to stimulate
proliferation of these cells in vitro. This pathway is also activated during regeneration in adult mice. However, it
is unknown whether cAMP signaling in myogenic progenitor cells in response to injury is sufficient to enhance
proliferation in vivo. We previously showed that the cAMP-responsive transcription factor CREB is activated in
areas of proliferation after acute muscle injury in mice and that mice expressing an activated mutant of CREB
have enhanced myoblast proliferation after injury. This project employs biochemical and chemical-genetic tools
to determine whether chemical-genetic elevation and genetic regulation of cAMP signaling specifically in satellite
cells alters proliferation and muscle regeneration in vivo through regulation of CREB/CRTC transcriptional
complexes. We will interrogate the regulation and function of cAMP-regulated CREB co-activators (CRTCs) in
satellite cell proliferation and use unbiased transcriptomic approaches to identify CREB/CRTC target genes that
contribute to the cAMP-driven proliferative response. We will undertake mechanistic studies to characterize
molecular regulation of CRTCs and the mechanism of CRTC recruitment to cAMP-regulated genes in
proliferating satellite cells. Results of this project will yield insights into fundamental mechanisms that drive
satellite cell proliferation and expansion. The long-term goal is to identify new pharmacologic targets to improve
muscle regeneration and function in patients with muscle disease and age-related sarcopenia.
概括
骨骼肌再生需要已知干细胞的激活和增殖
作为卫星细胞。 卫星细胞不仅是受伤后肌肉再生所必需的,而且还被认为
有助于持续维持肌肉质量。 不幸的是,这些祖细胞的数量和活动
随着衰老和肌肉萎缩症而下降。 因此,促进扩大的药理学策略
肌源卫星细胞可潜在地用于改善肌肉再生并保持肌肉功能
患有肌肉疾病的人或高龄的人。 通过 cAMP 通路发出信号
在胚胎发育过程中刺激生肌祖细胞增殖,并且足以刺激
这些细胞在体外增殖。 这条途径在成年小鼠的再生过程中也会被激活。 然而,它
目前尚不清楚肌源性祖细胞中响应损伤的 cAMP 信号传导是否足以增强
体内增殖。 我们之前表明,cAMP 响应转录因子 CREB 在
小鼠急性肌肉损伤后的增殖区域以及表达 CREB 激活突变体的小鼠
受伤后成肌细胞增殖增强。 该项目采用生化和化学遗传工具
确定 cAMP 信号传导的化学遗传升高和遗传调控是否特异于卫星
细胞通过调节 CREB/CRTC 转录来改变体内增殖和肌肉再生
复合物。 我们将探讨 cAMP 调节的 CREB 共激活剂 (CRTC) 的调节和功能
卫星细胞增殖并使用无偏见的转录组学方法来鉴定 CREB/CRTC 目标基因
有助于 cAMP 驱动的增殖反应。 我们将进行机械研究来表征
CRTC 的分子调节以及 CRTC 募集到 cAMP 调节基因的机制
增殖卫星细胞。 该项目的结果将深入了解驱动的基本机制
卫星细胞增殖和扩张。 长期目标是确定新的药理学目标以改善
患有肌肉疾病和年龄相关性肌少症的患者的肌肉再生和功能。
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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Rebecca L Berdeaux其他文献
Rebecca L Berdeaux的其他文献
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{{ truncateString('Rebecca L Berdeaux', 18)}}的其他基金
Promotion of satellite cell proliferation by cAMP signaling
cAMP 信号传导促进卫星细胞增殖
- 批准号:
10363649 - 财政年份:2019
- 资助金额:
$ 38.54万 - 项目类别:
Promotion of satellite cell proliferation by cAMP signaling
cAMP 信号传导促进卫星细胞增殖
- 批准号:
10583531 - 财政年份:2019
- 资助金额:
$ 38.54万 - 项目类别:
Dynamic regulation of hepatic SIK1 during fasting and feeding
禁食和进食期间肝脏SIK1的动态调节
- 批准号:
8798882 - 财政年份:2014
- 资助金额:
$ 38.54万 - 项目类别:
The role of SIK1 in myogenic differentiation and skeletal muscle repair
SIK1在生肌分化和骨骼肌修复中的作用
- 批准号:
8499263 - 财政年份:2011
- 资助金额:
$ 38.54万 - 项目类别:
Dynamic regulation of hepatic SIK1 during fasting and feeding
禁食和进食期间肝脏SIK1的动态调节
- 批准号:
8464093 - 财政年份:2011
- 资助金额:
$ 38.54万 - 项目类别:
Dynamic regulation of hepatic SIK1 during fasting and feeding
禁食和进食期间肝脏SIK1的动态调节
- 批准号:
8162022 - 财政年份:2011
- 资助金额:
$ 38.54万 - 项目类别:
The role of SIK1 in myogenic differentiation and skeletal muscle repair
SIK1在生肌分化和骨骼肌修复中的作用
- 批准号:
8302378 - 财政年份:2011
- 资助金额:
$ 38.54万 - 项目类别:
The role of SIK1 in myogenic differentiation and skeletal muscle repair
SIK1在生肌分化和骨骼肌修复中的作用
- 批准号:
8875612 - 财政年份:2011
- 资助金额:
$ 38.54万 - 项目类别:
Dynamic regulation of hepatic SIK1 during fasting and feeding
禁食和进食期间肝脏SIK1的动态调节
- 批准号:
8890142 - 财政年份:2011
- 资助金额:
$ 38.54万 - 项目类别:
Dynamic regulation of hepatic SIK1 during fasting and feeding
禁食和进食期间肝脏SIK1的动态调节
- 批准号:
8672634 - 财政年份:2011
- 资助金额:
$ 38.54万 - 项目类别:
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