ArticleJournal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology2011
Activation of Egr-1 expression in astrocytes by HIV-1 Tat: new insights into astrocyte-mediated Tat neurotoxicity.
Article in Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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Who cites it
35 citing papers in PubMed, 47 citations in OpenAlex.
- The single-cell immune landscape of HIV-associated aggressive B-cell lymphoma.Journal of the National Cancer Center · 2025Article
- Multi-omic Characterization of HIV Effects at Single Cell Level across Human Brain Regions.bioRxiv : the preprint server for biology · 2025Article
- Caffeine upregulates SIRT3 expression to ameliorate astrocytes-mediated HIV-1 Tat neurotoxicity via suppression of EGR1 signaling pathway.Journal of neurovirology · 2024Article
- Egr-1 is a key regulator of the blood-brain barrier damage induced by meningitic Escherichia coli.Cell communication and signaling : CCS · 2024Article
- HIV Nef Expression Down-modulated GFAP Expression and Altered Glutamate Uptake and Release and Proliferation in Astrocytes.Aging and disease · 2023Article
- Activation of α7 nicotinic acetylcholine receptor ameliorates HIV-associated neurology and neuropathology.Brain : a journal of neurology · 2021Article
- HIV Tat-Mediated Induction of Monocyte Transmigration Across the Blood-Brain Barrier: Role of Chemokine Receptor CXCR3.Frontiers in cell and developmental biology · 2021Article
- Functional impact of HIV-1 Tat on cells of the CNS and its role in HAND.Cellular and molecular life sciences : CMLS · 2020Review
- Long-term HIV-1 Tat Expression in the Brain Led to Neurobehavioral, Pathological, and Epigenetic Changes Reminiscent of Accelerated Aging.Aging and disease · 2020Article
- Article
- Morphine exposure exacerbates HIV-1 Tat driven changes to neuroinflammatory factors in cultured astrocytes.PloS one · 2020Article
- The impact of substance abuse on HIV-mediated neuropathogenesis in the current ART era.Brain research · 2019Review
- Nef-induced differential gene expression in primary CD4+ T cells following infection with HIV-1 isolates.Virus genes · 2019Article
- Spontaneous reactivation of latent HIV-1 promoters is linked to the cell cycle as revealed by a genetic-insulators-containing dual-fluorescence HIV-1-based vector.Scientific reports · 2018Article
- Doxycycline-inducible and astrocyte-specific HIV-1 Tat transgenic mice (iTat) as an HIV/neuroAIDS model.Journal of neurovirology · 2018Review
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- Tat-Mediated Induction of miRs-34a & -138 Promotes Astrocytic Activation via Downregulation of SIRT1: Implications for Aging in HAND.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2017Article
- HTLV-1 Tax upregulates early growth response protein 1 through nuclear factor-κB signaling.Oncotarget · 2017Article
- Exosome-associated release, uptake, and neurotoxicity of HIV-1 Tat protein.Journal of neurovirology · 2016Article
- HIV Tat Impairs Neurogenesis through Functioning As a Notch Ligand and Activation of Notch Signaling Pathway.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
Abstract
Human immunodeficiency virus type 1 (HIV-1) Tat plays an important role in HIV-associated neuropathogenesis; the underlying mechanisms are still evolving. We have recently shown that HIV-1 Tat induces expression of glial fibrillary acidic protein (GFAP), a characteristic of HIV-1 infection of the central nervous system. We have also shown that the Tat-induced GFAP expression in astrocytes is regulated by p300 and that deletion of the early growth response 1 (Egr-1) cis-transacting element within the p300 promoter abolishes Tat-induced GFAP expression. In this study, we further examined the relationship between Tat and Egr-1 in astrocytes. We found increased Egr-1 protein expression in Tat-expressing human astrocytoma cells and mouse primary astrocytes. Using the Egr-1 promoter-driven firefly luciferase reporter gene assay and the site-directed mutagenesis, we demonstrated that Tat increased Egr-1 expression by transactivating the Egr-1 promoter and involving specific serum response elements within the promoter. Consistent with these data, we showed that Tat transactivation of the Egr-1 promoter was abrogated when astrocytes were cultured in serum-reduced media. Taken together, these results reveal that Tat directly transactivates Egr-1 expression and suggest that Tat interaction with Egr-1 is probably one of the very upstream molecular events that initiate Tat-induced astrocyte dysfunction and subsequent Tat neurotoxicity.
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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.