ArticleCell cycle (Georgetown, Tex.)2015
Dysregulation of autophagy by HIV-1 Nef in human astrocytes.
Article in Cell cycle (Georgetown, Tex.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.
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47 citing papers in PubMed, 61 citations in OpenAlex.
- HIV-1 Nef induces astrocytes proliferation, inflammatory response, A1-like astrocytes polarization and subsequent neuronal apoptosis via NF-κB signaling pathway.Journal of neurovirology · 2026Article
- From HIV to SARS-CoV-2 associated neurological disorder ("HAND" to "SAND"): Viral infection as a "time-bomb" for the aging brain.Neuroscience applied · 2026Review
- Article
- Multifaceted Role of Nef in HIV-Associated Neurocognitive Disorder: Histopathological Alterations and Underlying Mechanisms.Brain sciences · 2025Review
- HIV-1 Nef synergizes with APOL1-G1 to induce nephrocyte cell death in HIV-related kidney diseases.Disease models & mechanisms · 2025Article
- Nef mediates neuroimmune response, myelin impairment, and neuronal injury in EcoHIV-infected mice.Life science alliance · 2025Article
- The emerging roles of ubiquitin-like modifications in regulating HIV replication and host defense.Frontiers in cellular and infection microbiology · 2025Review
- Promotion of HIV clearance by sensitization of HIV reservoirs to cell death.Frontiers in immunology · 2025Article
- HIV Protein Nef Induces Cardiomyopathy Through Induction of Bcl2 and p21.International journal of molecular sciences · 2024Article
- Extracellular vesicles produced by HIV-1 Nef-expressing cells induce myelin impairment and oligodendrocyte damage in the mouse central nervous system.Journal of neuroinflammation · 2024Article
- Review
- HIV-1 subtype B Tat enhances NOTCH3 signaling in astrocytes to mediate oxidative stress, inflammatory response, and neuronal apoptosis.Journal of neurovirology · 2023Article
- Disruption of the ADAM17/NF-κB feedback loop in astrocytes ameliorates HIV-1 Tat-induced inflammatory response and neuronal death.Journal of neurovirology · 2023Article
- HIV Nef Expression Down-modulated GFAP Expression and Altered Glutamate Uptake and Release and Proliferation in Astrocytes.Aging and disease · 2023Article
- Review
- Clearance of HIV-1 or SIV reservoirs by promotion of apoptosis and inhibition of autophagy: Targeting intracellular molecules in cure-directed strategies.Journal of leukocyte biology · 2022Review
- Caloric Restriction Mimetic 2-Deoxyglucose Reduces Inflammatory Signaling in Human Astrocytes: Implications for Therapeutic Strategies Targeting Neurodegenerative Diseases.Brain sciences · 2022Article
- Article
- Emerging Role of Nef in the Development of HIV Associated Neurological Disorders.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2021Review
- Lysosomal Functions in Glia Associated with Neurodegeneration.Biomolecules · 2021Review
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3 authors at 1 institution in 1 country.
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Abstract
Viruses often exploit autophagy, a common cellular process of degradation of damaged proteins, organelles, and pathogens, to avoid destruction. HIV-1 dysregulates this process in several cell types by means of Nef protein. Nef is a small HIV-1 protein which is expressed abundantly in astrocytes of HIV-1-infected brains and has been suggested to have a role in the pathogenesis of HIV-Associated Neurocognitive Disorders (HAND). In order to explore its effect in the CNS with respect to autophagy, HIV-1 Nef was expressed in primary human fetal astrocytes (PHFA) using an adenovirus vector (Ad-Nef). We observed that Nef expression triggered the accumulation of autophagy markers, ATG8/LC3 and p62 (SQSMT1). Similar results were obtained with Bafilomycin A1, an autophagy inhibitor which blocks the fusion of autophagosome to lysosome. Furthermore co-expression of tandem LC3 vector (mRFP-EGFP-LC3) and Ad-Nef in these cells produced mainly yellow puncta (mRFP+, EGFP+) strongly suggesting that autophagosome fusion to lysosome is blocked in PHFA cells in the presence of Nef. Together these data indicate that HIV-1 Nef mimics Bafilomycin A1 and blocks the last step of autophagy thereby helping HIV-1 virus to avoid autophagic degradation in human astrocytes.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.