Mechanisms of Neuro-AIDS by HIV 1B and C Clades Grant

abstract

  • The predominant HIV-1 subtype found in US and Western World is clade B, which differs significantly from clade C that exists in sub-Saharan Africa and Asia. Estimates suggest that out of about 33.2 million people infected with HIV-1, about 60% of the infection is with clade C alone and HIV-1C infection is rapidly spreading to other parts of the world. AIDS is often accompanied by neuropathological abnormalities. Current understandings of HIV-1 neuropathogenesis emanate from B clade from U.S and Western countries and very little information is available on neuropathogenesis of C clade. We hypothesize that clade B and C exert differential effects on CNS cells leading to differential neuropathogenesis and the mechanisms may be mediated by dysregulation of mitogen activated protein (MAP) kinases signal transduction pathways. Accordingly we will study for the first time :(Aim #1a) the effects of in vitro infection with clade B and C virus on production and gene expression of pro-inflammatory cytokines (TNF1 & IL-6), chemokines (MCP-1 & RANTES), and neurotoxin (IDO) by primary monocytes and CNS cells (astrocytes, microglial cells) and examine (Aim #1b), whether the mechanism of differential dysregulation induced by clade specific virus infection is mediated by modulation of mitogen activated protein (MAP) kinases signal transduction pathways. Further these in vitro infection studies will be compared, correlated and complemented with ex vivo studies (Aim #2) using monocytes from HIV-1B infected subjects being studied in Miami and HIV-1C infected subjects being studied at the collaborating institute in India. The results emanating from these studies may a) unravel the differential effect of clade specific infection on neuropathogenesis, b) help to develop therapeutically useful agents which could attenuate or prevent the neuropathogenesis associated with clade specific HIV-1 infection and c) design novel strategies to develop preventive and therapeutic global vaccines that can induce cross-clade antiviral immune response against multiclade or recombinant pandemic HIV-1 infection that is currently facing the world including United States where non B subtypes have been recently reported in migrant populations and among our military personals. PUBLIC HEALTH RELEVANCE: This application has significant relevance to the purpose of the PA-07-089. Using both in vitro infection and ex vivo models, this project will study for the first time the production and gene expression of neuropathogenic molecules associated with HIV-1B and HIV-C infection. Identification of the mechanisms of clade specific neuropathogenesis will help to design novel strategies to prevent neuropathogenesis in HIV infected subjects and can induce cross-clade antiviral immune response against multiclade or recombinant pandemic HIV-1 infection that is currently facing the world including United States.

date/time interval

  • July 5, 2010 - February 28, 2017

sponsor award ID

  • 1R01MH085259-01A1

local award ID

  • AWD000000001208

contributor

keywords

  • AIDS Dementia Complex
  • Abbreviations
  • Acquired Immunodeficiency Syndrome
  • Affect
  • Africa South of the Sahara
  • Anti-Inflammatory Agents
  • Anti-inflammatory
  • Antiviral Agents
  • Asia
  • Astrocytes
  • Attenuated
  • Brain
  • CCL2 gene
  • Cells
  • Clinical
  • Cognitive
  • Complement
  • Country
  • Dementia
  • Dendritic Cells
  • Developing Countries
  • Development
  • Disease Progression
  • Enzymes
  • Europe
  • Experimental Models
  • Family
  • Future
  • Gene Expression
  • Genetic Variation
  • HIV
  • HIV Infections
  • HIV diagnosis
  • HIV-1
  • Human
  • Immune response
  • In Vitro
  • India
  • Infection
  • Inflammatory
  • Inositol
  • Institutes
  • Integration Host Factors
  • Interleukin-6
  • Investigation
  • Kynurenine
  • MAPK14 gene
  • Macrophage Inflammatory Proteins
  • Mediating
  • Medical
  • Microglia
  • Military Personnel
  • Minor
  • Mitogen-Activated Protein Kinases
  • Mitogens
  • Modeling
  • Neuraxis
  • Neurologic
  • Neurons
  • Neuropathogenesis
  • Neurotoxins
  • Nomads
  • Organ
  • Pathogenesis
  • Patients
  • Peptides
  • Phosphotransferases
  • Population
  • Preventive
  • Production
  • Property
  • Protein Kinase
  • Proteins
  • Quinolinic Acid
  • RANTES
  • Recombinants
  • Regulation
  • Reporting
  • Risk
  • Role
  • Signal Transduction Pathway
  • Small Interfering RNA
  • T-Cell Activation
  • Therapeutic
  • Time
  • United States
  • Vaccines
  • Viral
  • Virus
  • Virus Diseases
  • Western World
  • chemokine
  • cytokine
  • design
  • frontal lobe
  • indolamine
  • inhibitor/antagonist
  • macrophage
  • member
  • methyl tryptophan
  • mitogen-activated protein kinase p38
  • monocyte
  • motor disorder
  • neurotoxic
  • novel
  • novel strategies
  • pandemic disease
  • prevent
  • public health relevance
  • stress activated protein kinase
  • stress-activated protein kinase 1
  • therapeutic target