Abstract
Despite adherence to treatment, individuals living with HIV have an increased risk for developing cognitive impairments, referred to as HIV-associated neurological disorders (HAND). Due to continued growth in the HIV population, particularly amongst the aging cohort, the neurobiological mechanisms of HAND are increasingly relevant. Similar to other viral proteins (e.g. Tat, Gp120, Vpr), the Negative Factor (Nef) is associated with numerous adverse effects in the CNS as well as cognitive impairments. In particular, emerging data indicate the consequences of Nef may be facilitated by the modulation of cellular autophagy as well as its inclusion into extracellular vesicles (EVs). The present review examines evidence for the molecular mechanisms by which Nef might contribute to neuronal dysfunction underlying HAND, with a specific focus on autophagy and EVs. Based on the these data, we propose an integrated model by which Nef may contribute to underlying neuronal dysfunction in HAND and highlight potentially novel therapeutic targets for HAND.
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This work was supported, in part, by grants awarded by the NIH to IKS. SSY and MD are supported by Interdisciplinary and Translational Research Training in NeuroAIDS (T32MH079785).
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Yarandi, S.S., Duggan, M.R. & Sariyer, I.K. Emerging Role of Nef in the Development of HIV Associated Neurological Disorders. J Neuroimmune Pharmacol 16, 238–250 (2021). https://doi.org/10.1007/s11481-020-09964-1
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DOI: https://doi.org/10.1007/s11481-020-09964-1