Subproject 4 Antimicrobials and Efflux Pumps in Staphylococcus aureus Infection
子项目 4 金黄色葡萄球菌感染中的抗菌药物和外排泵
基本信息
- 批准号:9151289
- 负责人:
- 金额:$ 57.22万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-09-01 至 2021-08-31
- 项目状态:已结题
- 来源:
- 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
项目摘要
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.
概括
该项目的长期目标是确定金黄色葡萄球菌的全部排出泵
这有助于多种抗菌抗性,并阐明表达的决定因素,
它们在微生物生理中的作用以及对细菌对抗菌剂的影响的影响。这
工作将侧重于调节元素和细菌适应性的遗传分析以及对
皮下脓肿模型中的抗菌剂,与其他项目组合作评估
新型抗菌化合物在脓肿中的疗效以及外排泵对此的影响程度
有四个特定的目的:1)分析金黄色葡萄球菌的全局排出泵
对P01鉴定的已建立抗菌剂和新型化合物的易感性的影响
合作者; 2)分析脓肿环境中生理泵过表达的影响
针对TET38泵和四环素治疗的对抗菌剂的治疗反应; 3)
剖析使用高效率影响电阻EFFUX泵表达的监管网络
Walker Lab开发的多重库; 4)测试P01合作者的新颖化合物
哺乳动物感染和生物膜模型的功效以及评估脓肿中的月光模型
模型。这项工作将利用金黄色葡萄球菌中的通用操纵和等位基因交换,基因的测量
用RT-PCR表达并建立的感染鼠模型(皮下脓肿,肾脏
脓肿,致死性)利用基因定义的甲氧西林抗性和其他金黄色葡萄球菌的菌株。这
该计划项目的总体目标是采用良好的多学科方法
了解抗生素耐药性的发展和传播,并将这项工作与
搜索损害抗性病原体的化合物,包括耐甲氧西林的金黄色葡萄球菌
(MRSA),通过抑制新的目标和途径。该项目将增加对抵抗的理解
与多重外排泵有关的机制,并提供了测试此类泵的效果的应变
在新的靶标和途径上活跃的新颖化合物。它还将利用哺乳动物模型
常见的MRSA感染以测试体内复合活性。
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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David C Hooper其他文献
David C Hooper的其他文献
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{{ truncateString('David C Hooper', 18)}}的其他基金
Antimicrobials and Efflux Pumps in Staphylococcus aureus Infection
金黄色葡萄球菌感染中的抗菌药物和外排泵
- 批准号:
8376876 - 财政年份:2012
- 资助金额:
$ 57.22万 - 项目类别:
Antimicrobials and Efflux Pumps in Staphylococcus aureus Infection
金黄色葡萄球菌感染中的抗菌药物和外排泵
- 批准号:
8202963 - 财政年份:2011
- 资助金额:
$ 57.22万 - 项目类别:
Subproject 4: Role of Pumps in Resistance, Physiology, and Infection
子项目 4:泵在抵抗、生理和感染中的作用
- 批准号:
10571916 - 财政年份:2009
- 资助金额:
$ 57.22万 - 项目类别:
Subproject 4: Role of Pumps in Resistance, Physiology, and Infection
子项目 4:泵在抵抗、生理和感染中的作用
- 批准号:
10327905 - 财政年份:2009
- 资助金额:
$ 57.22万 - 项目类别:
Mechanism and Spread of Qnr-Mediated Resistance
Qnr介导的耐药机制和传播
- 批准号:
6705185 - 财政年份:2004
- 资助金额:
$ 57.22万 - 项目类别:
Mechanism and Spread of Qnr-Mediated Resistance
Qnr介导的耐药机制和传播
- 批准号:
6835177 - 财政年份:2004
- 资助金额:
$ 57.22万 - 项目类别:
Mechanism and Spread of Qnr-Mediated Resistance
Qnr介导的耐药机制和传播
- 批准号:
7162141 - 财政年份:2004
- 资助金额:
$ 57.22万 - 项目类别:
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