Astrocyte elevated gene-1 (AEG-1) and the A(E)Ging HIV/AIDS-HAND

Neha Vartak-Sharma, Shruthi Nooka, Anuja Ghorpade

Research output: Contribution to journalReview article

8 Scopus citations

Abstract

Recent attempts to analyze human immunodeficiency virus (HIV)-1-induced gene expression changes in astrocytes uncovered a multifunctional oncogene, astrocyte elevated gene-1 (AEG-1). Our previous studies revealed that AEG-1 regulates reactive astrocytes proliferation, migration and inflammation, hallmarks of aging and CNS injury. Moreover, the involvement of AEG-1 in neurodegenerative disorders, such as Huntington's disease and migraine, and its induction in the aged brain suggest a plausible role in regulating overall CNS homeostasis and aging. Therefore, it is important to investigate AEG-1 specifically in aging-associated cognitive decline. In this study, we decipher the common mechanistic links in cancer, aging and HIV-1-associated neurocognitive disorders that likely contribute to AEG-1-based regulation of astrocyte responses and function. Despite AEG-1 incorporation into HIV-1 virions and its induction by HIV-1, tumor necrosis factor-α and interleukin-1β, the specific role(s) of AEG-1 in astrocyte-driven HIV-1 neuropathogenesis are incompletely defined. We propose that AEG-1 plays a central role in a multitude of cellular stress responses involving mitochondria, endoplasmic reticulum and the nucleolus. It is thus important to further investigate AEG-1-based cellular and molecular regulation in order to successfully develop better therapeutic approaches that target AEG-1 to combat cancer, HIV-1 and aging.

Original languageEnglish
Pages (from-to)133-157
Number of pages25
JournalProgress in Neurobiology
Volume157
DOIs
StatePublished - Oct 2017

Keywords

  • Aging
  • Astrocytes
  • ER/Nucleolar/Oxidative stress
  • Excitotoxicity
  • HIV-associated neurocognitive disorders
  • Neuroinflammation

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