Identification of Novel Bioactive Lipid Metabolites for Predicting Liver-related Outcomes in Persons Co-Infected with HIV and HCV
鉴定新型生物活性脂质代谢物,用于预测 HIV 和 HCV 合并感染者的肝脏相关结果
基本信息
- 批准号:9241700
- 负责人:
- 金额:$ 40.02万
- 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:2017-03-15 至 2022-02-28
- 项目状态:已结题
- 来源:
- 关键词:AddressAmericanAnti-Retroviral AgentsAntiviral AgentsAntiviral TherapyAssessment toolCellsCeramidesCessation of lifeChronic Hepatitis CCirrhosisClinicalCohort StudiesDataDevelopmentDiseaseDisease ProgressionEicosanoidsEtiologyEventFibrosisFutureGoalsHIVHIV InfectionsHIV/HCVHealthHepaticHepatic FibrogenesisHepatitis CHepatitis C co-infectionHomeostasisIndividualInfectionKnowledgeLipidsLiteratureLiverLiver FibrosisLiver diseasesLongitudinal cohort studyMediatingMetabolicModelingModificationMono-SMorbidity - disease rateNatureOutcomePathogenesisPathway interactionsPatientsPatternPersonsPlayPopulationPrimary carcinoma of the liver cellsRegimenReportingResearch DesignSeverity of illnessSphingomyelinsTestingToxic effectUnited StatesValidationVariantViralVirusWorkacylcarnitineadverse outcomebasebiobankco-infectioncohortdisorder riskexperiencefibrogenesishuman diseaseimprovedlipid metabolismliver developmentliver injurymortalitynon-alcoholic fatty livernonalcoholic steatohepatitisnoveltherapeutic targettool
项目摘要
PROJECT SUMMARY/ABSTRACT
Our long-term goal is to identify bioactive lipid metabolites that are dysregulated in HIV-infected individuals and
to gain a fundamental understanding of these lipid metabolites in liver disease pathogenesis and the
development of liver-related complications. The overall objective is to utilize HIV/HCV-coinfection as a model to
probe for underlying mechanisms of accelerated liver fibrosis and disease progression with the overall premise
that there is a common final pathway of liver injury that is metabolic in nature. Our central hypothesis is that
dysregulation of bioactive lipid metabolism reports on a common mechanism by which HIV-infection,
antiretrovirals, and viral co-infections interact to modulate fibrogenesis. Based on evidence that HCV dramatically
modulates host cell lipid metabolism and HIV-infection and antiretrovirals also perturb lipid pathways, we propose
that accelerated fibrogenesis in HIV is due, at least in part, to additive hits on lipid metabolism and excess
accumulation of detrimental lipid metabolites, like ceramide. Thus, we used a multi-targeted lipidomics platform
to investigate bioactive lipids as predictors of liver fibrosis stage. Our preliminary studies indicate that (1)
expression of bioactive lipids correlates with histopathologic stage of liver disease in patients with HIV/HCV and
HCV infections, and (2) clearance of HCV using DAA regimens results in rapid changes in lipid homeostasis
pathways. The proposed work will test our hypothesis that dysregulation of bioactive lipid metabolism in HIV-
infection plays a key role in progressive liver disease, as well as the corollary hypothesis that variations in lipid
expression can be used as noninvasive assessments of liver disease complications. We will accomplish the
objective of the application by pursuing the following Specific Aims: (1) Discover and validate specific expression
patterns of circulating bioactive lipid metabolites that are predictive of end-stage liver disease complications in
patients with HIV/HCV-coinfection;; (2) Determine unique patterns of circulating bioactive lipid metabolite
expression for patients with HIV-infection including those with and without HCV co-infection and non-virally
mediated metabolic liver disease (NAFLD/NASH);; (3) Identify specific bioactive lipid metabolite expression that
is modified by DAA treatment-induced HCV clearance and statin initiation in HIV/HCV co-infected patients. The
impact of this proposal will be to fundamentally change our understanding of the metabolic mechanisms of liver
disease in people living with HIV. We will develop a novel, noninvasive assessment of end-stage liver disease
complications that will have immediate clinical utility. We will also apply this validated, noninvasive metabolite
profile as a tool to dissect lipid dysregulation related to HCV infection and other etiologies of liver disease
including HIV persistence and long-term antiretroviral toxicity which could inform future mechanistic studies and
identify potential therapeutic targets of fibrogenesis.
项目概要/摘要
我们的长期目标是识别 HIV 感染者体内失调的生物活性脂质代谢物,并
获得对这些脂质代谢物在肝病发病机制中的基本了解以及
肝脏相关并发症的发展。总体目标是利用 HIV/HCV 合并感染作为模型
在总体前提下探讨加速肝纤维化和疾病进展的潜在机制
肝脏损伤的最终途径是代谢性的 我们的中心假设是
生物活性脂质代谢失调报告了艾滋病毒感染、
抗逆转录病毒药物和病毒合并感染相互作用,可显着调节纤维形成。
我们认为,调节宿主细胞脂质代谢,HIV 感染和抗逆转录病毒药物也会扰乱脂质途径
HIV 中加速的纤维化至少部分是由于脂质代谢的附加作用和过量
有害脂质代谢物(如神经酰胺)的积累。因此,我们使用了多靶点脂质组学平台
研究生物活性脂质作为肝纤维化阶段的预测因子我们的初步研究表明(1)。
生物活性脂质的表达与 HIV/HCV 患者肝病的组织病理学阶段相关
HCV 感染和 (2) 使用 DAA 方案清除 HCV 会导致脂质稳态快速变化
拟议的工作将检验我们的假设,即 HIV 中生物活性脂质代谢失调。
感染在进行性肝病以及脂质变化的推论假设中起着关键作用
表达可以用作肝病并发症的无创评估。
通过追求以下具体目标来实现应用程序的目标:(1) 发现并验证特定的表达。
循环生物活性脂质代谢模式可预测终末期肝病并发症
HIV/HCV 合并感染患者;;(2)确定循环生物活性脂质代谢物的独特模式
HIV 感染患者(包括有或没有 HCV 合并感染和非病毒感染患者)的表达
介导的代谢性肝病(NAFLD/NASH);;(3)确定特定的生物活性脂质代谢物表达
在 HIV/HCV 共感染患者中,DAA 治疗诱导的 HCV 清除和他汀类药物的启动会改变这种情况。
该提案的影响将从根本上改变我们对肝脏代谢机制的理解
我们将开发一种新的、无创的终末期肝病评估方法。
具有立即临床效用的并发症。我们还将应用这种经过验证的非侵入性代谢物
作为剖析与 HCV 感染和其他肝病病因相关的脂质失调的工具
包括艾滋病毒持久性和长期抗逆转录病毒毒性,这可以为未来的机制研究提供信息
确定纤维形成的潜在治疗靶点。
项目成果
期刊论文数量(0)
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Susanna Naggie其他文献
Susanna Naggie的其他文献
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{{ truncateString('Susanna Naggie', 18)}}的其他基金
Moving Towards More Individualized Therapies in HIV/HCV Co-infected Patients
对 HIV/HCV 合并感染患者进行更加个体化的治疗
- 批准号:
8207717 - 财政年份:2011
- 资助金额:
$ 40.02万 - 项目类别:
Moving Towards More Individualized Therapies in HIV/HCV Co-infected Patients
对 HIV/HCV 合并感染患者进行更加个体化的治疗
- 批准号:
8487353 - 财政年份:2011
- 资助金额:
$ 40.02万 - 项目类别:
Moving Towards More Individualized Therapies in HIV/HCV Co-infected Patients
对 HIV/HCV 合并感染患者进行更加个体化的治疗
- 批准号:
8293010 - 财政年份:2011
- 资助金额:
$ 40.02万 - 项目类别:
Moving Towards More Individualized Therapies in HIV/HCV Co-infected Patients
对 HIV/HCV 合并感染患者进行更加个体化的治疗
- 批准号:
8691714 - 财政年份:2011
- 资助金额:
$ 40.02万 - 项目类别:
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