Identification and Role of Type IV Secretion Effector Proteins in Coxiella burnetii
Identification and Role of Type IV Secretion Effector Proteins in Coxiella burnetii
批准号:
10090552
负责人:
JAMES Evans SAMUEL
金额:
$36.75万
依托单位国家:
美国
项目类别:
财政年份:
2012
资助国家:
美国
项目状态:
已结题
起止时间:
2012-08-20 至 2024-01-31
关键词:
ANK2 geneAcuteAgonistAnkyrin RepeatAutoimmune DiseasesBacteriaBindingBone MarrowCell Culture TechniquesCell NucleusCellsCharacteristicsChronicComplementCoxiellaCoxiella burnetiiDataDiseaseGenesGeneticGenetic TranscriptionGoalsHumanImmune responseImmune signalingIn VitroInfectionInflammatoryInterleukin-17Knock-outLeadLysosomesMacrophage ActivationMapsMethodsModelingModificationMolecularMutationNuclear TranslocationOpen Reading FramesOrganismPathogenesisPathway interactionsPhenotypePost-Transcriptional RegulationProteinsQ FeverRoleSignal PathwaySignal TransductionSiteStructure-Activity RelationshipTestingType IV Secretion System PathwayVacuoleVirulencecancer therapyin vivoinnate immune functionknock-downmacrophagemetabolomicsmonocytemutantnovelp65pathogenpathogenic bacteriapromoterresponsesingle cell analysistooltranscriptome sequencingtranscriptomics
中文摘要
人类的急性呼吸道感染和慢性呼吸道感染都是由柯克斯氏杆菌引起的,这种细菌使人口贩运变得更容易。
并在含有柯克斯体的空泡病毒(CCV)中复制细胞。病毒感染会抑制巨噬细胞生长。
激活是以一种依赖于系统的方式进行的,因此我们的中枢神经系统假说是正确的。
T4SS依赖的药物效应器分子在体外和体内的表征将不会定义这种“隐形”。
毒力与基因。这项新的应用程序将无法识别T4SS依赖的毒力及其决定因素。
通过使用病原体和效应器来调节巨噬细胞的信号转导通路,并利用突变体来调节信号转导。
突变体认为,它们对于限制基因复制或调节对病毒感染的反应来说是必不可少的。他们的目标是1。
确定T4SS依赖的巨噬细胞操纵率的范围。支持最新的工作原理假说。
在巨噬细胞中,有多个T4SS效应器可以操纵对感染病毒的反应。现在使用的是一种主要的治疗方法。
骨髓来源的巨噬细胞集落刺激因子(BMDM)是一种细胞培养方法,它能够使卡氏杆菌RSA439(NMII)成为可能。
我们将使用转录转录技术(包括单个细胞)来广泛研究BMDM的特征。
分析)、代谢组学和流式细胞仪分析,以全面绘制T4SS依赖的基因图谱。
巨噬细胞活化的调控途径。目的:2.确定T4SS的效应因子。
操纵免疫信号。最有效的假说是T4SS信号效应器针对特定的信号。
激活信号通路。为了更好地识别这类广泛的T4SS信号效应器,被标记为C.kburnetii。
T4SS的底物将在信号转导激动剂的环境下被进一步转化为巨噬细胞。
补充性的方法是使用T4SS和突变体来识别它不能完全调节的感染。
与生俱来的激活。目标:3.建立T4SS效应器信号调制的机制基础。
从初步数据中获得的候选基因包括;;(A)和2;Ankyrin和含有重复序列的蛋白质,其中包括:
抑制激动剂(NF-κb;;)和5个T4SS效应器,认为它们是BMDM;;和复制过程中必不可少的因素。
C)3个T4SS效应分子,这些效应分子将交通流量传递给核心分子(核调素)。我们将不会确定谁是结合的宿主。
合作伙伴使用下拉式方法定义他们在疾病中的主要角色,使用宿主的下拉式方法。
基因敲除的方法。每个效应基因都将被分析,要么是TN基因,要么是位点特定的基因突变体。
英文摘要
Acute and chronic Q fever infections in humans are caused by Coxiella burnetii, which traffics to
and replicates in Coxiella-containing vacuoles (CCV). Infection suppresses macrophage
activation in a type 4 secretion system-dependent manner, hence our central hypothesis is
characterization of T4SS-dependent effector molecules in vitro and in vivo will define “stealthy”
virulence genes. This application will identify T4SS-dependent virulence determinants that
modulate macrophage signaling pathways using pathogen effector mutants and host signaling
mutants that are essential for restricting replication or modulating response to infection. Aim 1.
Identify the range of T4SS dependent manipulation of macrophage. The working hypothesis
is multiple T4SS effectors manipulate the response to infection in macrophages. Using a primary
bone marrow derived macrophage (BMDM) cell culture that enables C. burnetii, RSA439 (NMII)
to replicate. We will extensively characterize BMDM using transcriptomic (including single cell
analysis), metabolomics and flow cytometric analysis to comprehensively map T4SS dependent
pathway modulation of macrophage activation. Aim 2. Identify T4SS effectors which
manipulate immune signaling. The working hypothesis is T4SS effectors target specific
activation signaling pathways. To identify this broad class of T4SS effectors, tagged C. burnetii
T4SS substrates will be transfected into macrophages in the context of signaling agonists. A
complementary approach will use T4SS mutants to identify infection that does not modulate
innate activation. Aim 3. Establish mechanistic basis for T4SS effector modulation. Current
candidates derived from preliminary data include;; a) 2 Ankyrin repeat-containing proteins which
dampen agonist driven NF-κb;; b) 5 T4SS effectors that are essential for replication in BMDM;; and
c) 3 T4SS effectors which traffic to the nucleus (nucleomodulins). We will identify host binding
partners using pull-down methods and define their role in disease using host knock-down or
knock-out approaches. Each effector will be analyzed with either Tn or site-specific mutants.
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会议论文
The immunomodulatory role of Ankyrin repeat containing effectors expressed by Coxiella burnetii
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批准号:9815034
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项目类别:
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资助金额:$22.44万
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财政年份:2019
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification and Role of Type IV Effector Proteins in Coxiella burnetii
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批准号:8373379
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项目类别:
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资助金额:$37.86万
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财政年份:2012
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification and Role of Type IV Effector Proteins in Coxiella burnetii
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批准号:8724071
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项目类别:
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资助金额:$5.2万
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财政年份:2012
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负责人:JAMES Evans SAMUEL
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Identification and Role of Type IV Effector Proteins in Coxiella burnetii
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批准号:8894364
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项目类别:
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资助金额:$41.72万
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负责人:JAMES Evans SAMUEL
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Identification and Role of Type IV Secretion Effector Proteins in Coxiella burnetii
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批准号:10330553
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项目类别:
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资助金额:$36.73万
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财政年份:2012
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification and Role of Type IV Effector Proteins in Coxiella burnetii
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批准号:8704379
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项目类别:
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资助金额:$41.7万
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财政年份:2012
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负责人:JAMES Evans SAMUEL
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依托单位:
Development of a Subunit Vaccine Against Q Fever
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批准号:8377061
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项目类别:
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资助金额:$36.7万
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财政年份:2012
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification and Role of Type IV Effector Proteins in Coxiella burnetii
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批准号:8532814
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项目类别:
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资助金额:$34.52万
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财政年份:2012
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负责人:JAMES Evans SAMUEL
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依托单位:
Development of a Subunit Vaccine Against Q Fever
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批准号:8233020
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项目类别:
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资助金额:$42.74万
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财政年份:2011
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负责人:JAMES Evans SAMUEL
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依托单位:
Development of Site-Specific Mutagenesis in Coxiella burnetti
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批准号:8206476
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项目类别:
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资助金额:$6.59万
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财政年份:2010
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification of Coxiella burnetii Virulence Factors by Transposon Mutagenesis
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批准号:8096560
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项目类别:
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资助金额:$21.76万
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财政年份:2010
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负责人:JAMES Evans SAMUEL
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依托单位:
Development of Site-Specific Mutagenesis in Coxiella burnetti
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批准号:8029852
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项目类别:
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资助金额:$7.33万
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财政年份:2010
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification of Coxiella burnetii Virulence Factors by Transposon Mutagenesis
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批准号:7875857
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项目类别:
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资助金额:$18.31万
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财政年份:2010
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification and Role of Type IV Effector Proteins in Coxiella burnetii
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批准号:8134140
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项目类别:
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资助金额:$37.87万
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财政年份:2010
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负责人:JAMES Evans SAMUEL
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依托单位:
Development of a Subunit Vaccine Against Q Fever
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批准号:7676566
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项目类别:
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资助金额:$38.7万
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财政年份:2009
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负责人:JAMES Evans SAMUEL
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依托单位:
Ability of Antibody Against Coxiella burnetii LPS to Confer Protective Immunity
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批准号:7649125
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项目类别:
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资助金额:$19.96万
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财政年份:2008
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification of T Cell Antigen For Q Fever Vaccination
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批准号:6922208
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资助金额:$37.68万
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财政年份:2005
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification of T Cell Antigen For Q Fever Vaccination
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批准号:7015006
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资助金额:$35.68万
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财政年份:2005
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification of T Cell Antigen For Q Fever Vaccination
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批准号:7342500
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资助金额:$33.99万
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财政年份:2005
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负责人:JAMES Evans SAMUEL
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依托单位:
Identification of T Cell Antigen For Q Fever Vaccination
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批准号:7176822
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资助金额:$34.64万
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负责人:JAMES Evans SAMUEL
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依托单位:
海外基金