ArticleJournal of virology2011
The HIV-1 Tat protein has a versatile role in activating viral transcription.
Article in Journal of virology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
69 citing papers in PubMed, 114 citations in OpenAlex.
- Circular RNA functions in HIV-1 infection.RNA biology · 2026Review
- Predicting the evolutionary and structural compensation in Tat ARM region across HIV-1 groups using machine learning approach.Scientific reports · 2026Article
- Enhanced transcriptional insulation of lentiviral vectors using "sequence-upgraded polyA long terminal repeats" or "supA-LTRs".Molecular therapy. Advances · 2026Article
- Beyond reverse transcription: molecular mechanisms and emerging paradigms in retroviral replication.FEMS microbiology reviews · 2026Review
- Exploring the Application of Nano-Differential Scanning Calorimetry in RNA Characterization.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Sex differences in the capacity of minor phytocannabinoids to attenuate nociceptive insults in HIV-1 Tat-expressing mice.NeuroImmune pharmacology and therapeutics · 2025Article
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- Efficient mRNA delivery to resting T cells to reverse HIV latency.Nature communications · 2025Article
- Article
- Review
- Underestimated virus impaired cognition-more evidence and more work to do.Frontiers in immunology · 2025Review
- LCRAnnotationsDB: a database of low complexity regions functional and structural annotations.BMC genomics · 2024Article
- Prevalence of HPV in anal cancer: exploring the role of infection and inflammation.Infectious agents and cancer · 2024Review
- Transactivation of the novel 5' cis-acting element of mouse mammary tumor virus (MMTV) by human retroviral transactivators Tat and Tax.Communications biology · 2024Article
- Review
- HIV-1 Tat-Mediated Human Müller Glial Cell Senescence Involves Endoplasmic Reticulum Stress and Dysregulated Autophagy.Viruses · 2024Article
- Small molecule inhibitors of transcriptional cyclin-dependent kinases impose HIV-1 latency, presenting "block and lock" treatment strategies.Antimicrobial agents and chemotherapy · 2024Article
- Opticool: Cutting-edge transgenic optical tools.PLoS genetics · 2024Review
- How to manage drug-virus interplay underlying skin eruptions in children.The World Allergy Organization journal · 2024Review
- Emerging roles of the Protein Phosphatase 1 (PP1) in the context of viral infections.Cell communication and signaling : CCS · 2024Review
9 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
It is generally acknowledged that the Tat protein has a pivotal role in HIV-1 replication because it stimulates transcription from the viral long terminal repeat (LTR) promoter by binding to the TAR hairpin in the nascent RNA transcript. However, a multitude of additional Tat functions have been suggested. The importance of these functions is difficult to assess in replication studies with Tat-mutated HIV-1 variants because of the dominant negative effect on viral gene expression. We therefore used an HIV-1 construct that does not depend on the Tat-TAR interaction for transcription to reevaluate whether or not Tat has a second essential function in HIV-1 replication. This HIV-rtTA variant uses the incorporated Tet-On gene expression system for activation of transcription and replicates efficiently upon complete TAR deletion. Here we demonstrated that Tat inactivation does nevertheless severely inhibit replication. Upon long-term culturing, the Tat-minus HIV-rtTA variant acquired mutations in the U3 region that improved promoter activity and reestablished replication. We showed that in the absence of a functional TAR, Tat remains important for viral transcription via Sp1 sequence elements in the U3 promoter region. Substitution of these U3 sequences with nonrelated promoter elements created a virus that replicates efficiently without Tat in SupT1 T cells. These results indicate that Tat has a versatile role in transcription via TAR and U3 elements. The results also imply that Tat has no other essential function in viral replication in cultured T cells.
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What OpenQuestion holds
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.