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
总结
该项目的长期目标是确定金黄色葡萄球菌的全部外排泵
有助于多种抗菌素耐药性并阐明其表达的决定因素,
它们在微生物生理学中的作用以及它们在感染中对细菌对抗微生物剂的反应的影响。 的
工作将集中在调控元件的遗传分析和细菌的适应性和对
在皮下脓肿模型中使用抗菌剂,与其他项目组合作评估
新的抗微生物化合物在乳腺癌中的功效以及外排泵对其影响的程度
功效 具体目的有四:1)分析S.金黄色葡萄球菌,
对已确定的抗菌剂和P01鉴定的新型化合物敏感性的影响
合作者; 2)分析脓肿环境中生理泵过度表达的影响,
对抗菌剂的治疗反应,重点关注Tet 38泵和四环素治疗; 3)
剖析影响阻力流出泵表达的调控网络,
由步行者实验室开发的多重文库;和4)测试来自P01合作者的新化合物,
在哺乳动物感染和生物膜模型中的有效性,并评估脓肿中的兼职模型
模型这项工作将利用遗传操作和等位基因交换在S。金黄色葡萄球菌,基因测量
表达,并建立感染的小鼠模型(皮下脓肿,肾脓肿,
脓肿,致死性),利用基因组定义的耐甲氧西林菌株和其他S.金黄色。的
该计划项目的总体目标是采取一个良好的综合,多学科的方法,
了解抗生素耐药性的发展和传播,并将这一努力与
寻找破坏耐药病原体的化合物,包括耐甲氧西林的S。 金黄色
(MRSA),通过抑制新的目标和途径。 这个项目将增加对耐药性的理解
并提供用于测试这种泵的作用的菌株
对新靶点和途径有活性的新型化合物。 它还将利用哺乳动物模型,
常见的MRSA感染以测试化合物的体内活性。
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
-
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
-
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
-
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
-
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
-
项目类别:
-
资助金额:$43.37万
-
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:8865521
-
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