HCMV regulation of host cell signaling and cytokines in myelosuppression
HCMV 在骨髓抑制中对宿主细胞信号传导和细胞因子的调节
基本信息
- 批准号:10216638
- 负责人:
- 金额:$ 26.8万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-08-15 至 2022-07-31
- 项目状态:已结题
- 来源:
- 关键词:AllogenicAnimal ModelAntiviral AgentsBLT miceBackBacterial InfectionsBlood TransfusionBone MarrowCD34 geneCell Differentiation processCellsChemicalsClinicalCytomegalovirusDataDevelopmentDiseaseEngraftmentFailureGanciclovirGenetic TranscriptionGoalsGrowth FactorHematopoiesisHematopoieticHematopoietic Stem Cell TransplantationHematopoietic stem cellsHumanIn VitroIndividualInfectionInterventionInvestigationMediatingMicroRNAsModelingMolecularMolecular ProfilingMorbidity - disease rateMycosesMyelopoiesisMyelosuppressionOrgan TransplantationOrganismPathway interactionsPatientsPharmacologyProcessRegulationRiskRoleSamplingSignal PathwaySignal TransductionSolidStem cell transplantSystemTestingTranscriptTransplant RecipientsTransplantationViral GenesViral PathogenesisViral ProteinsVirusVirus LatencyWorkblood productclinical developmentclinical encounterclinically relevantcytokinecytopeniahumanized mouseimproved outcomein vivoin vivo Modelinhibitor/antagonistinsightknock-downmortalitymouse modelmultiple omicsnovel viruspredictive signaturereconstitutionrepairedsmall hairpin RNAtargeted treatmenttherapy designtranscriptomevirus host interactionvirus identification
项目摘要
PROJECT 5 PROJECT SUMMARY
Human cytomegalovirus (HCMV) remains a significant cause of morbidity and mortality after Hematopoietic
Stem Cell Transplantion (HSCT) and Solid Organ Transplantation (SOT). A commonly encountered clinical
manifestation of HCMV infection in the HSCT or SOT recipient is myelosuppression. HCMV reactivation and
use of the antiviral ganciclovir is associated with a number of cytopenias that increase the risk of secondary
bacterial or fungal infections and require growth factor support or transfusion of blood products. Despite the
clear clinical relevance of myelosuppression to the transplant recipient with HCMV infection, little is known
about the mechanism(s) by which HCMV infection inhibits normal hematopoiesis. HCMV has been shown to
inhibit hematopoiesis by the direct infection of hematopoietic progenitor cells (HPCs) and indirectly by the
effect of infected HPCs on the microenvironment supporting hematopoiesis.
We have recapitulated HCMV myelosuppression in vivo using a humanized mouse model. We
further show in both in vitro and in vivo models that the addition of increasing numbers of infected CD34+ HPCs
increases the degree of myelosuppression and that supernatant from infected CD34+ HPCs, as opposed to
mock-infected HPCs, suppresses myelopoiesis. Further, Projects 1, 2, 3 and 4 have identified viral proteins
and miRNAs that directly alter signaling and either promote or suppress hematopoiesis in vitro. Therefore, we
hypothesize that HCMV infection reprograms signaling and cytokine secretion in infected cells resulting in a
microenvironment that inhibits hematopoiesis and contributes to clinical myelosuppression and hematopoietic
failure. To test our hypothesis, we propose a systems approach to define the changes in signaling and cytokine
secretion using both in vitro and in vivo models. We propose the following specific aims. Specific Aim 1. How
does HCMV infection of CD34+ HPCs in vitro regulate hematopoiesis? We hypothesize that HCMV suppresses
CD34+ HPC differentiation by altering signaling and secretion in the infected cell. Specific Aim 2. How does
HCMV regulate hematopoiesis in vivo? We hypothesize that HCMV infection alters the microenvironment for
hematopoiesis in the host organism. Specific Aim 3. What are the molecular signatures associated with HCMV
myelosuppression in HSCT and SOT patients? We hypothesize that HCMV-mediated changes in cytokine
secretion impede hematopoietic reconstitution in HSCT and SOT patients.
IMPACT: Taken together, our project provides a unique opportunity to make unprecedented advancements
in our understanding of the mechanistic basis of HCMV-mediated myelosuppression. This advancement is
driven by the development of the state-of-the-art huBLT mouse model and the identification of virus-host
interactions impacting hematopoiesis and the key cytokine and molecular signatures that predict disease.
项目5项目摘要
人类巨细胞病毒(HCMV)仍然是造血后发病率和死亡率的重要原因
干细胞移植(HSCT)和固体器官移植(SOT)。通常遇到的临床
HSCT或SOT受体中HCMV感染的表现是骨髓抑制。 HCMV重新激活和
使用抗病毒ganciclovir与多种细胞减少症相关
细菌或真菌感染,需要生长因子支持或输血。尽管有
骨髓抑制与HCMV感染的移植受者的明确临床相关性,鲜为人知
关于HCMV感染抑制正常造血的机制。 HCMV已显示为
通过直接感染造血祖细胞(HPC)并间接地抑制造血作用
感染HPC对微环境支持造血的影响。
我们使用人源化的小鼠模型在体内概括了HCMV骨髓抑制。我们
在体外和体内模型中的进一步显示,增加了受感染的CD34+ HPC的添加
增加了骨髓抑制的程度和感染CD34+ HPC的上清液,而不是
模拟感染的HPC,抑制骨髓性。此外,项目1、2、3和4已经确定了病毒蛋白
以及直接改变信号并促进或抑制体外造血的miRNA。因此,我们
假设HCMV感染在受感染细胞中重新编程的信号传导和细胞因子分泌,从而导致
抑制造血的微环境并有助于临床骨髓抑制和造血
失败。为了检验我们的假设,我们提出了一种系统方法来定义信号传导和细胞因子的变化
使用体外和体内模型都分泌。我们提出以下特定目标。特定目标1。
CD34+ HPC在体外的HCMV感染是否调节造血?我们假设HCMV抑制了
CD34+ HPC通过改变感染细胞中的信号传导和分泌而分化。特定目标2。如何
HCMV在体内调节造血?我们假设HCMV感染改变了微环境
宿主有机体中的造血。特定目标3。与HCMV相关的分子特征是什么
HSCT和SOT患者的骨髓抑制?我们假设HCMV介导的细胞因子变化
分泌阻碍HSCT和SOT患者的造血重建。
影响:我们的项目也为取得前所未有的进步提供了独特的机会
在我们对HCMV介导的骨髓抑制的机理基础的理解中。这种进步是
由最先进的Hublt小鼠模型的发展和病毒宿主的鉴定所驱动
影响造血的相互作用以及预测疾病的关键细胞因子和分子特征。
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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ANDREW D YUROCHKO其他文献
ANDREW D YUROCHKO的其他文献
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{{ truncateString('ANDREW D YUROCHKO', 18)}}的其他基金
Center for Applied Immunology and Pathological Processes
应用免疫学和病理过程中心
- 批准号:
10090768 - 财政年份:2021
- 资助金额:
$ 26.8万 - 项目类别:
Center for Applied Immunology and Pathological Processes
应用免疫学和病理过程中心
- 批准号:
10360457 - 财政年份:2021
- 资助金额:
$ 26.8万 - 项目类别:
Center for Applied Immunology and Pathological Processes
应用免疫学和病理过程中心
- 批准号:
10569050 - 财政年份:2021
- 资助金额:
$ 26.8万 - 项目类别:
HCMV regulation of host cell signaling and cytokines in myelosuppression
HCMV 在骨髓抑制中对宿主细胞信号传导和细胞因子的调节
- 批准号:
9980285 - 财政年份:2017
- 资助金额:
$ 26.8万 - 项目类别:
HCMV regulation of monocyte/macrophage host cell signaling in viral reactivation
HCMV 对病毒再激活中单核细胞/巨噬细胞宿主细胞信号传导的调节
- 批准号:
10327952 - 财政年份:2017
- 资助金额:
$ 26.8万 - 项目类别:
HCMV regulation of monocyte/macrophage host cell signaling in viral reactivation
HCMV 对病毒再激活中单核细胞/巨噬细胞宿主细胞信号传导的调节
- 批准号:
10629186 - 财政年份:2017
- 资助金额:
$ 26.8万 - 项目类别:
LSUHSC COBRE:ENDOTHELIAL CELL PROLIFERATION DURING HCMV INFECTION
LSUHSC COBRE:HCMV 感染期间的内皮细胞增殖
- 批准号:
7171198 - 财政年份:2005
- 资助金额:
$ 26.8万 - 项目类别:
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HCMV 在骨髓抑制中对宿主细胞信号传导和细胞因子的调节
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9980285 - 财政年份:2017
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$ 26.8万 - 项目类别: