Latexin function in the maintenance and regeneration of the hematopoietic system
乳胶素在造血系统的维持和再生中的作用
基本信息
- 批准号:10837423
- 负责人:
- 金额:$ 42.7万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2023
- 资助国家:美国
- 起止时间:2023-08-01 至 2025-07-31
- 项目状态:未结题
- 来源:
- 关键词:AcuteAgingAmino AcidsAngiotensin IIBCL2 geneBindingBinding ProteinsBloodBlood CellsBone MarrowBone Marrow CellsBone Marrow TransplantationBone marrow failureCancer PatientCarboxypeptidaseCarboxypeptidase ACellular StressDevelopmentDoseElderlyFluorouracilFundingGenesGeneticGenetic TranscriptionGoalsHMGB2 geneHematologic NeoplasmsHematopoiesisHematopoieticHematopoietic SystemHematopoietic stem cellsHemorrhageHomingImmuneIn VitroInduction of ApoptosisInfectionInjuryInterventionKnockout MiceKnowledgeLeadLegal patentLifeLymphoidMaintenanceMalignant - descriptorMalignant NeoplasmsMeasuresMediatingMolecularMusMyelogenousMyelosuppressionNF-kappa BNatural regenerationOutputPC3.1 antigenPathologicPathway interactionsPatientsPharmacologic SubstancePharmacy (field)PhysiologicalPopulationProcessProliferatingProtein SubunitsQuality of lifeRadiationRadiation ProtectionRadiation therapyRegenerative capacityRegulationRegulator GenesRejuvenationReportingRibosomal ProteinsRiskRoleSignal TransductionStressSystemTherapeuticTimeTransplantationUp-RegulationWorkcancer therapycell injurycell regenerationdrug discoveryeffective therapyfunctional declinegenetic regulatory proteingenome integrityhematopoietic stem cell aginghematopoietic stem cell self-renewalin vivoinhibitorirradiationknock-downnovelnovel therapeuticsoverexpressionpreconditioningpreservationpreventradiation mitigationradiation responseself-renewalsenescencestem cell survivalstem cells
项目摘要
ABSTRACT
The hematopoietic system is very sensitive to a variety of stresses. Radiation therapy commonly results in not
only acute hematopoietic suppression but also long-term bone marrow (BM) injury with increased risk of BM
failure or malignancy. Accumulation of damages during aging process is another type of stress on HSCs.
Enhancing HSC survival and maintaining their genomic integrity upon stress are crucial for preservation of HSC
self-renewal function and for protection against stress-induced BM injury. However, the underlying molecular
mechanisms are not well defined. No effective treatment has been developed to prevent or treat stress-induced
HSC damages and related pathological consequences. The primary goal of this project is to identify novel
pharmaceutical compounds and transcriptional mechanism that target a HSC stress regulatory protein, latexin
(Lxn), and to uncover the mechanisms that Lxn suppression results in radiation protection and HSC rejuvenation.
We have identified a novel Lxn inhibitor small compound and found that it significantly increases survival by
protecting HSCs via a newly identified canonical mechanism of carboxypeptidase A inhibition upon radiation.
Lxn deletion also mitigates aging-related functional decline of HSCs. We hypothesize that pharmaceutical and
transcriptional suppression of Lxn protects HSCs and blood system from stress (radiation and aging)-induced
functional decline via the upregulation of canonical CPA3 pathway. Aim 1 is to determine the molecular
mechanisms by which Lxn inactivation protects against radiation-induced BM injury via up-regulation of canonical
CPA3 pathway. Aim 2 is to identify the mechanism of action of Lxn lead inhibitor in radiation protection of
hematopoietic system. Aim 3 is to define the role of Lxn suppression in rejuvenating old HSCs. Findings will
advance our knowledge of novel mechanisms how Lxn regulates stress hematopoiesis. Results will provide a
compelling starting point and lay grounds for the novel drug discovery by targeting Lxn, which will benefit patients
subject to radiation treatment and old people with dysfunctional HSC and immune aging.
摘要
项目成果
期刊论文数量(1)
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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Ying Liang其他文献
Ying Liang的其他文献
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{{ truncateString('Ying Liang', 18)}}的其他基金
Latexin in human hematopoietic stem cell expansion
乳胶素在人类造血干细胞扩增中的作用
- 批准号:
9436110 - 财政年份:2017
- 资助金额:
$ 42.7万 - 项目类别:
Latexin function in the maintenance and regeneration of the hematopoietic system
乳胶素在造血系统的维持和再生中的作用
- 批准号:
9197912 - 财政年份:2016
- 资助金额:
$ 42.7万 - 项目类别:
Latexin function in the maintenance and regeneration of the hematopoietic system
乳胶素在造血系统的维持和再生中的作用
- 批准号:
10432119 - 财政年份:2016
- 资助金额:
$ 42.7万 - 项目类别:
Latexin function in the maintenance and regeneration of the hematopoietic system
乳胶素在造血系统的维持和再生中的作用
- 批准号:
10298039 - 财政年份:2016
- 资助金额:
$ 42.7万 - 项目类别:
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