Subproject 4 Antimicrobials and Efflux Pumps in Staphylococcus aureus Infection
Subproject 4 Antimicrobials and Efflux Pumps in Staphylococcus aureus Infection
批准号:
9151289
负责人:
David C Hooper
金额:
$57.22万
依托单位国家:
美国
项目类别:
财政年份:
2016
资助国家:
美国
项目状态:
已结题
起止时间:
2016-09-01 至 2021-08-31
关键词:
AbscessAffectAnti-Bacterial AgentsAntibiotic ResistanceAntimicrobial ResistanceBacteremiaBacteriophagesBambermycinsBiological AssayCessation of lifeClinicalCommunitiesDaptomycinDevelopmentDoxycyclineEnvironmentGene ExpressionGenesGoalsHIV InfectionsHospitalsIn VitroInfectionKnock-outLacZ GenesLeadLibrariesLinezolidMeasurementMethicillin ResistanceMicrobial BiofilmsMicrobial PhysiologyModelingMoxifloxacinMulti-Drug ResistanceMusNebraskaPathway interactionsPhenotypePhysiologicalPredispositionProceduresPublic HealthPumpQuinolonesRegulationRegulator GenesRegulatory ElementReporter GenesResistanceResistance developmentRoleStaphylococcus aureusSurfaceSystemTestingTetracycline ResistanceTetracyclinesThigh structureUnited StatesVancomycin ResistanceWalkersWorkantimicrobialantimicrobial drugbacterial fitnessbasebeta-Galactosidasebeta-Lactamsdensityeffective therapyefficacy testingefflux pumpfitnessfitness testgenetic analysisgenetic manipulationin vivoinhibitor/antagonistmembermethicillin resistant Staphylococcus aureusmortalitymouse modelmutantnew therapeutic targetnoveloverexpressionpathogenprogramsquinolone resistancerenal abscessresistance mechanismresponsesubcutaneoustransmission processtreatment response
中文摘要
摘要:
该项目的长期目标是进一步确定金黄色葡萄球菌外排泵的完整阵列。
这可能有助于提高多重抗菌素耐药性,并有助于阐明其最终表达的主要决定因素。
它们在微生物生理过程中的重要作用,以及它们在细菌对感染中的抗菌素反应中的作用。
工作重点将放在监管因素的遗传分析和细菌的适应性研究以及对细菌的反应上。
抗菌素参与了一种新的皮下脓肿模型,并与其他研究项目小组合作,对该模型进行了全面评估。
新型抗菌药物在脓肿中的有效性,以及外排泵对脓肿的影响程度。
功效。有四个具体的目标:1)分析金黄色葡萄球菌的全球血液流出泵阵列,以确定其治疗效果。
对已有抗菌药物和新化合物敏感性的影响P01。
合作者;(2)分析生理学药物泵和过度表达对脓肿、环境和人类健康的影响。
关于抗菌药物的治疗和反应,重点是Tet38泵的治疗和四环素的治疗;(3)。
在使用高效泵的情况下,剖析影响其阻力的主要监管网络。
多重文库是由沃克实验室开发的;他们测试了来自P01的新型化合物和合作者。
在哺乳动物感染模型和生物被膜模型中的疗效,以及在治疗脓肿中的最新兼职模型的评估。
模型。这项工作还将利用金黄色葡萄球菌的遗传基因操纵技术和等位基因交换技术,即对该基因的测量。
通过逆转录-聚合酶链式反应(RT-PCR)表达,建立了新的小鼠皮肤感染模型(皮下脓肿、肾脓肿)。
脓肿,致命性)正在利用一种在基因组上定义的耐甲氧西林金黄色葡萄球菌和其他金黄色葡萄球菌的菌株。
该计划和项目管理的总体目标是采取一种良好整合的、多学科的管理方法。
了解抗生素的耐药性和发展趋势,以及传播问题,以便更好地将这一努力与世界卫生组织结合起来。
寻找可能损害耐药病原体的化合物,包括耐甲氧西林金黄色葡萄球菌。
(耐甲氧西林金黄色葡萄球菌),通过抑制新的药物靶点和新的途径。这一新的项目将有助于加深对药物耐药性的理解。
与多种药物外排泵相关的机制提供了更多的菌株,用于对此类泵的实际效果进行测试。
在新的化合物方面,它可以有效地对抗新的靶点基因和新的途径。它还将利用哺乳动物的基因模型。
常见的耐甲氧西林金黄色葡萄球菌感染需要在体内测试一种化合物的活性。
英文摘要
Summary
The longterm goals of the project are to identify the full array of efflux pumps of Staphylococcus aureus
that contribute to multiple antimicrobial resistance and to elucidate the determinants of their expression,
their role in microbial physiology and their effect on bacterial response to antimicrobials in infection. The
work will focus on genetic analysis of regulatory elements and on bacterial fitness and response to
antimicrobials in a subcutaneous abscess model, collaborating with other project groups to assess the
efficacy of novel antimicrobial compounds in abscesses and the extent to which efflux pumps affect that
efficacy. There are four specific aims: 1) analyze the global array of efflux pumps of S. aureus for their
effects on susceptibility to established antimicrobials and novel compounds identified by P01
collaborators; 2) analyze the effects of physiologic pump overexpression in the abscess environment and
on treatment response to antimicrobials with focus on the Tet38 pump and tetracycline treatment; 3)
dissect the regulatory networks affecting resistance effux pump expression using the high‐efficiency
multiplex libraries developed by the Walker lab; and 4) test novel compounds from P01 collaborators for
efficacy in mammalian infection and biofilm models and assess the moonlighting model in the abscess
model. The work will utilize genetic manipulation and allelic exchange in S. aureus, measurements of gene
expression with RT‐PCR, and established murine models of infection (subcutaneous abscess, renal
abscess, lethality) utilizing a genomically defined strains of methicillin‐resistant and other S. aureus. The
overall goal of the program project is to take a well‐integrated, multi‐disciplinary approach to
understanding antibiotic resistance development and transmission, and to integrate that effort with the
search for compounds that compromise resistant pathogens, including methicillin‐resistant S. aureus
(MRSA), by inhibiting novel targets and pathways. This project will add to understanding of resistance
mechanisms related to multidrug efflux pumps and provide strains for testing the effect of such pumps
on novel compounds active against new targets and pathways. It will also utilize mammalian models of a
common MRSA infection to test compound activity in vivo.
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会议论文
Antimicrobials and Efflux Pumps in Staphylococcus aureus Infection
-
批准号:8376876
-
项目类别:
-
资助金额:$40.21万
-
财政年份:2012
-
负责人:David C Hooper
-
依托单位:
Antimicrobials and Efflux Pumps in Staphylococcus aureus Infection
-
批准号:8202963
-
项目类别:
-
资助金额:$41.29万
-
财政年份:2011
-
负责人:David C Hooper
-
依托单位:
Subproject 4: Role of Pumps in Resistance, Physiology, and Infection
-
批准号:10571916
-
项目类别:
-
资助金额:$41.48万
-
财政年份:2009
-
负责人:David C Hooper
-
依托单位:
Subproject 4: Role of Pumps in Resistance, Physiology, and Infection
-
批准号:10327905
-
项目类别:
-
资助金额:$43.51万
-
财政年份:2009
-
负责人:David C Hooper
-
依托单位:
Plasmid-mediated Quinolone Resistance
-
批准号:8695968
-
项目类别:
-
资助金额:$41.13万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Mechanism and Spread of Qnr-Mediated Resistance
-
批准号:6705185
-
项目类别:
-
资助金额:$21.69万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Mechanism and Spread of Qnr-Mediated Resistance
-
批准号:6835177
-
项目类别:
-
资助金额:$21.88万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Plasmid-mediated Quinolone Resistance
-
批准号:8822197
-
项目类别:
-
资助金额:$43.5万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Plasmid-mediated Quinolone resistance
-
批准号:8099517
-
项目类别:
-
资助金额:$41.09万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Mechanism and Spread of Qnr-Mediated Resistance
-
批准号:7334159
-
项目类别:
-
资助金额:$20.35万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Mechanism and Spread of Qnr-Mediated Resistance
-
批准号:7162141
-
项目类别:
-
资助金额:$20.74万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Mechanism and Spread of Qnr-Mediated Resistance
-
批准号:7005671
-
项目类别:
-
资助金额:$21.36万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Plasmid-mediated Quinolone resistance
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批准号:7885479
-
项目类别:
-
资助金额:$41.23万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Plasmid-mediated Quinolone resistance
-
批准号:7736766
-
项目类别:
-
资助金额:$47.21万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Plasmid-mediated Quinolone resistance
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批准号:8296530
-
项目类别:
-
资助金额:$40.96万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
Plasmid-mediated Quinolone resistance
-
批准号:8475422
-
项目类别:
-
资助金额:$38.5万
-
财政年份:2004
-
负责人:David C Hooper
-
依托单位:
MECHANISMS OF ACTION AND RESISTANCE TO QUINOLONE AGENTS
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批准号:3136642
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项目类别:
-
资助金额:$12.72万
-
财政年份:1986
-
负责人:David C Hooper
-
依托单位:
QUINOLONE RESISTANCE MECHANISMS IN STAPHYLOCOCCUS AUREUS
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批准号:2062420
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项目类别:
-
资助金额:$30.37万
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财政年份:1986
-
负责人:David C Hooper
-
依托单位:
Quinolone and multidrug resistance in Staphylococcus aureus
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批准号:8240971
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项目类别:
-
资助金额:$43.37万
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财政年份:1986
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负责人:David C Hooper
-
依托单位:
Quinolone and multidrug resistance in Staphylococcus aureus
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批准号:8865521
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项目类别:
-
资助金额:$39.16万
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财政年份:1986
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负责人:David C Hooper
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依托单位:
海外基金