Evidence map›Paper›PMID 29751762›Full record

ArticleRetrovirology2018

HIV latency reversing agents act through Tat post translational modifications.

Georges Khoury, Talia M Mota, Shuang Li, Carolin Tumpach, Michelle Y Lee, Jonathan Jacobson, Leigh Harty, Jenny L Anderson, Sharon R Lewin, Damian F J Purcell

Open access · goldAbstract read
In one paragraph

Article in Retrovirology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.5field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. HIV-1 Tat endocytosis and retention in endolysosomes affects HIV-1 Tat-induced LTR transactivation in astrocytes.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2022
    Article
  9. HibeRNAtion: HIV-1 RNA Metabolism and Viral Latency.Frontiers in cellular and infection microbiology · 2022
    Review
  10. Article
  11. Design and Synthesis of Hybrid Compounds as Epigenetic Modifiers.Pharmaceuticals (Basel, Switzerland) · 2021
    Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 2 countries.

Georges KhouryDepartment of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.
Talia M MotaDepartment of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.
Shuang LiSchool of Life Sciences, Peking University, Beijing, China.
Carolin TumpachThe Peter Doherty Institute for Infection and Immunity, Royal Melbourne Hospital, University of Melbourne, Melbourne, Australia.
Michelle Y LeeDepartment of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.
Jonathan JacobsonDepartment of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.
Leigh HartyDepartment of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.
Jenny L AndersonThe Peter Doherty Institute for Infection and Immunity, Royal Melbourne Hospital, University of Melbourne, Melbourne, Australia.
Sharon R LewinThe Peter Doherty Institute for Infection and Immunity, Royal Melbourne Hospital, University of Melbourne, Melbourne, Australia.
Damian F J PurcellDepartment of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia. dfjp@unimelb.edu.au.
University of Melbourne · AUPeter Doherty Institute · AUPeking University · CNThe Royal Melbourne Hospital · AU

Funding

National Health and Medical Research Council APP1052979National Health and Medical Research Council APP1129320Office of AIDS Research DARE U19 AI096109
6 · The paper itself

Abstract

backgroundDifferent classes of latency reversing agents (LRAs) are being evaluated to measure their effects in reactivating HIV replication from latently infected cells. A limited number of studies have demonstrated additive effects of LRAs with the viral protein Tat in initiating transcription, but less is known about how LRAs interact with Tat, particularly through basic residues that may be post-translationally modified to alter the behaviour of Tat for processive transcription and co-transcriptional RNA processing.

resultsHere we show that various lysine and arginine mutations reduce the capacity of Tat to induce both transcription and mRNA splicing. The lysine 28 and lysine 50 residues of Tat, or the acetylation and methylation modifications of these basic amino acids, were essential for Tat transcriptional control, and also for the proviral expression effects elicited by histone deacetylase inhibitors (HDACi) or the bromodomain inhibitor JQ1. We also found that JQ1 was the only LRA tested that could induce HIV mRNA splicing in the absence of Tat, or rescue splicing for Tat lysine mutants in a BRD4-dependent manner.

conclusionsOur data provide evidence that Tat activities in both co-transcriptional RNA processing together with transcriptional initiation and processivity are crucial during reactivation of latent HIV infection. The HDACi and JQ1 LRAs act with Tat to increase transcription, but JQ1 also enables post-transcriptional mRNA splicing. Tat residues K28 and K50, or their modifications through acetylation or methylation, are critical for LRAs that function in conjunction with Tat.

Indexed as

Amino Acid SubstitutionAnti-HIV AgentsAzepinesBromodomain Containing ProteinsCell Cycle ProteinsGene Expression Regulation, ViralHistone Deacetylase InhibitorsHIV-1HIV InfectionsHumansMutationNuclear ProteinsProtein Processing, Post-TranslationalRNA Splicingtat Gene Products, Human Immunodeficiency VirusTranscription FactorsAnti-HIV AgentsAzepinesBRD4 protein, humanBromodomain Containing ProteinsCell Cycle ProteinsHistone Deacetylase Inhibitors(+)-JQ1 compoundNuclear Proteinstat Gene Products, Human Immunodeficiency VirusTranscription FactorsTriazolesHIV latencyLRAPost-translational modificationSplicingTat

Identifiers

PMID29751762
PMCPMC5948896
OpenAlexW2799724030

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.