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.
项目总结/摘要
我们的长期目标是确定在HIV感染者中失调的生物活性脂质代谢物,
获得这些脂质代谢物在肝脏疾病发病机制中的基本认识,
总体目标是利用HIV/HCV-HCV共感染作为模型,
在总体前提下探索肝纤维化加速和疾病进展的潜在机制
肝损伤有一个共同的最终途径,本质上是代谢。我们的中心假设是,
生物活性脂质代谢的失调报道了HIV感染的共同机制,
抗逆转录病毒药物和病毒共感染相互作用调节纤维化。
调节宿主细胞脂质代谢和HIV-1感染,抗逆转录病毒药物也扰乱脂质途径,我们提出,
HIV中加速的纤维化至少部分是由于脂质代谢和过量的
因此,我们使用了一个多靶向脂质组学平台,
探讨生物活性脂质作为肝纤维化分期的预测指标。我们的初步研究表明:(1)
在HIV/HCV患者中,生物活性脂质的表达与肝脏疾病的组织病理学分期相关,
HCV感染,和(2)使用DAA方案清除HCV导致脂质稳态的快速变化
拟议的工作将验证我们的假设,即HIV-1感染者的生物活性脂质代谢失调,
感染在进行性肝病中起着关键作用,以及由此产生的假设,
表达可用作肝病并发症的非侵入性评估。我们将完成
通过追求以下具体目标来实现应用程序的目标:(1)发现和验证特定表达
循环生物活性脂质代谢物模式可预测终末期肝病并发症,
HIV/HCV-HCV共感染患者; 2)确定循环生物活性脂质代谢物的独特模式
HIV-1感染患者(包括HCV共感染和非HCV共感染患者)的表达
介导的代谢性肝病(NAFLD/NASH);(3)鉴定特异性生物活性脂质代谢物表达,
在HIV/HCV共感染的患者中,DAA治疗诱导的HCV清除和他汀类药物的启动可以改变。
这一提议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、非侵入性的评估终末期肝病的方法
并发症,将有直接的临床效用。我们还将应用这种经过验证的,非侵入性的代谢产物,
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
包括艾滋病病毒的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,
确定纤维化的潜在治疗靶点。
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:
8691714 - 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:
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:
8207717 - 财政年份:2011
- 资助金额:
$ 40.02万 - 项目类别:
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