ArticleMolecular biology of the cell2006
HIV-1 Tat regulates endothelial cell cycle progression via activation of the Ras/ERK MAPK signaling pathway.
Article in Molecular biology of the cell, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.
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Who cites it
46 citing papers in PubMed, 72 citations in OpenAlex.
- Trial
- HIV-Tat and vascular endothelium: implications in the HIV associated brain, heart, and lung complications.Frontiers in immunology · 2025Review
- HIV-1 Tat-induced disruption of epithelial junctions and epithelial-mesenchymal transition of oral and genital epithelial cells lead to increased invasiveness of neoplastic cells and the spread of herpes simplex virus and cytomegalovirus.Frontiers in immunology · 2025Review
- Matrix Metalloproteinase-9 Signaling Regulates Colon Barrier Integrity in Models of HIV Infection.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2024Article
- Fentanyl dysregulates neuroinflammation and disrupts blood-brain barrier integrity in HIV-1 Tat transgenic mice.Journal of neurovirology · 2024Article
- Deciphering the complete human-monkeypox virus interactome: Identifying immune responses and potential drug targets.Frontiers in immunology · 2023Article
- Human Immunodeficiency Virus (HIV) and Human Cytomegalovirus (HCMV) Coinfection of Infant Tonsil Epithelium May Synergistically Promote both HIV-1 and HCMV Spread and Infection.Journal of virology · 2021Article
- Impact of human immunodeficiency virus on pulmonary vascular disease.Global cardiology science & practice · 2021Review
- Hedgehog Signaling: Implications in Cancers and Viral Infections.International journal of molecular sciences · 2021Review
- Hippocampal blood-brain barrier of methamphetamine self-administering HIV-1 transgenic rats.The European journal of neuroscience · 2021Article
- Article
- HIV-1 proteins gp120 and tat induce the epithelial-mesenchymal transition in oral and genital mucosal epithelial cells.PloS one · 2019Article
- HIV-induced matrix metalloproteinase-9 activation through mitogen-activated protein kinase signalling promotes HSV-1 cell-to-cell spread in oral epithelial cells.The Journal of general virology · 2018Article
- HIV Proteins and Endothelial Dysfunction: Implications in Cardiovascular Disease.Frontiers in cardiovascular medicine · 2018Review
- Notch3/VEGF-A axis is involved in TAT-mediated proliferation of pulmonary artery smooth muscle cells: Implications for HIV-associated PAH.Cell death discovery · 2018Article
- Clinically significant mutations in HIV-infected patients with lung adenocarcinoma.British journal of cancer · 2017Article
- Confusion in the Study of Immune Reconstitution Inflammatory Syndrome.Pathogens & immunity · 2017Article
- 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
- Beyond RGD: virus interactions with integrins.Archives of virology · 2015Review
- Rosiglitazone suppresses HIV-1 Tat-induced vascular inflammation via Akt signaling.Molecular and cellular biochemistry · 2015Article
Corrections and comments
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Authors and funding
11 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tat, the transactivator of HIV-1 gene expression, is released by acutely HIV-1-infected T-cells and promotes adhesion, migration, and growth of inflammatory cytokine-activated endothelial and Kaposi's sarcoma cells. It has been previously demonstrated that these effects of Tat are due to its ability to bind through its arginine-glycine-aspartic (RGD) region to the alpha5beta1 and alphavbeta3 integrins. However, the signaling pathways linking Tat to the regulation of cellular functions are incompletely understood. Here, we report that Tat ligation on human endothelial cells results in the activation of the small GTPases Ras and Rac and the mitogen-activated protein kinase ERK, specifically through its RGD region. In addition, we demonstrated that Tat activation of Ras, but not of Rac, induces ERK phosphorylation. We also found that the receptor proximal events accompanying Tat-induced Ras activation are mediated by tyrosine phosphorylation of Shc and recruitment of Grb2. Moreover, Tat enabled endothelial cells to progress through the G1 phase in response to bFGF, and the process is linked to ERK activation. Taken together, these data provide novel evidence about the ability of Tat to activate the Ras-ERK cascade which may be relevant for endothelial cell proliferation and for Kaposi's sarcoma progression.
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Registered trials
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.