Identification of Novel Bioactive Lipid Metabolites for Predicting Liver-related Outcomes in Persons Co-Infected with HIV and HCV
Identification of Novel Bioactive Lipid Metabolites for Predicting Liver-related Outcomes in Persons Co-Infected with HIV and HCV
批准号:
9241700
负责人:
Susanna Naggie
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
项目状态:
已结题
起止时间:
2017-03-15 至 2022-02-28
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
中文摘要
项目摘要/摘要:
我们的长期目标是更好地识别具有生物活性的脂类和代谢物,这些代谢物是艾滋病毒感染者体内调节失调的物质。
为了更好地从根本上了解这些血脂代谢产物在肝病发病机制中的作用。
与肝脏相关的并发症的发展趋势。我们的总体目标是继续利用艾滋病毒/丙型肝炎病毒联合感染作为一种新的模式。
探讨加速肝纤维化和疾病进展的潜在机制,并以此为总的前提。
也就是说,存在一种常见的、最终的肝脏损伤途径,即本质上是一种代谢性疾病。我们的中央健康假说就是这样。
关于生物活性血脂代谢失调的报告强调了一种常见的导致艾滋病毒感染的机制。
抗逆转录病毒药物、丙型肝炎病毒和其他病毒的联合感染可以相互作用,从而调节肝纤维化的形成。根据新的证据,丙型肝炎病毒显著减少。
我们可以建议,抗逆转录病毒药物可以调节宿主细胞的脂质代谢和抑制HIV感染,也可以扰乱脂质代谢途径。
这种加速了艾滋病病毒感染中纤维化形成的机制,至少在一定程度上是由于添加剂对血脂代谢的影响和体内过剩。
有害的脂类和代谢物的积累,例如神经酰胺。因此,我们使用了一个更多靶点的脂类组学研究平台。
为了更好地研究生物活性血脂作为肝纤维化早期预测因子的作用,我们的初步临床研究表明:(1)
人类免疫缺陷病毒/丙型肝炎患者体内生物活性脂类的表达与肝脏疾病的组织病理学分期相关。
丙型肝炎病毒感染、感染和死亡(2)使用DAA方案清除丙型肝炎病毒会导致血脂和动态平衡的快速变化。
途径。这项新提出的工作计划将检验我们的假设,即在艾滋病中,生物活性血脂和新陈代谢的失调。
感染在进展性脂肪肝疾病中起着至关重要的作用,以及他的推论,即血脂水平的变化。
它也可以用来对肝脏疾病和并发症进行无创性的临床评估。我们将不会实现这一目标。
通过追求以下具体目标来实现应用程序的目标:(1)发现并验证特定的应用程序。
血液循环中生物活性、脂质和代谢产物的模式表明,它们是终末期肝病和并发症的预测指标。
患有艾滋病毒/丙型肝炎合并感染的患者;;检测(2)需要确定循环中具有生物活性的脂质和代谢物的独特模式。
对于那些感染艾滋病毒的患者,包括那些感染和未感染丙型肝炎病毒的患者,以及那些不是病毒感染的患者,他们的表达都很重要。
介导的代谢和肝病疾病(NAFLD/NASH);;(3)将确定一种特定的具有生物活性的脂质和代谢物的表达。
是由DAA治疗诱导的丙型肝炎病毒清除剂和他汀类药物在艾滋病毒/丙型肝炎合并感染的患者中启动的。
这一提议的影响将无法从根本上改变我们对肝脏主要代谢机制的认识。
疾病是艾滋病病毒携带者的常见疾病。我们将继续开发一种新的、无创的终末期肝病临床评估方法。
并发症可能不会立即产生临床实用价值。我们也将继续应用这种经过验证的非侵入性药物代谢物。
Profile是一个重要的工具,可以用来解剖与丙型肝炎病毒感染相关的血脂和调节失调,以及其他与肝脏疾病相关的病因。
包括艾滋病毒的持久性和长期的抗逆转录病毒和毒性,这可能会为未来的机械性药物研究提供信息。
确定肝纤维化的潜在治疗靶点。
英文摘要
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.
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会议论文
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批准号:8691714
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项目类别:
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资助金额:$8.87万
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财政年份:2011
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负责人:Susanna Naggie
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依托单位:
Moving Towards More Individualized Therapies in HIV/HCV Co-infected Patients
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批准号:8293010
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项目类别:
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资助金额:$8.87万
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财政年份:2011
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负责人:Susanna Naggie
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依托单位:
Moving Towards More Individualized Therapies in HIV/HCV Co-infected Patients
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批准号:8487353
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项目类别:
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资助金额:$8.87万
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财政年份:2011
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负责人:Susanna Naggie
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依托单位:
Moving Towards More Individualized Therapies in HIV/HCV Co-infected Patients
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批准号:8207717
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项目类别:
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资助金额:$8.87万
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财政年份:2005
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负责人:Susanna Naggie
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依托单位:
海外基金