Evidence map›Paper›PMID 34545097›Full record

ArticleNature communications2021

Exosome-mediated stable epigenetic repression of HIV-1.

Surya Shrivastava, Roslyn M Ray, Leo Holguin, Lilliana Echavarria, Nicole Grepo, Tristan A Scott, John Burnett, Kevin V Morris

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
10.7field-weighted citation impact, top 1% 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

54 citing papers in PubMed, 96 citations in OpenAlex.

  1. Endogenous Engineering Reprograms Extracellular Vesicles for Enhanced Therapeutic Function.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
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  4. Searching for a HIV-1 Cure.Theranostics · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Surya ShrivastavaCenter for Gene Therapy, City of Hope-Beckman Research Institute, Duarte, CA, USA.ORCID 0000-0003-0021-2751
Roslyn M RayCenter for Gene Therapy, City of Hope-Beckman Research Institute, Duarte, CA, USA.ORCID 0000-0001-6060-6969
Leo HolguinCenter for Gene Therapy, City of Hope-Beckman Research Institute, Duarte, CA, USA.ORCID 0000-0002-8462-187X
Lilliana EchavarriaCenter for Gene Therapy, City of Hope-Beckman Research Institute, Duarte, CA, USA.ORCID 0000-0002-3302-8662
Nicole GrepoCenter for Gene Therapy, City of Hope-Beckman Research Institute, Duarte, CA, USA.ORCID 0000-0002-0419-8443
Tristan A ScottCenter for Gene Therapy, City of Hope-Beckman Research Institute, Duarte, CA, USA.ORCID 0000-0002-7843-9609
John BurnettCenter for Gene Therapy, City of Hope-Beckman Research Institute, Duarte, CA, USA.ORCID 0000-0002-8817-6064
Kevin V MorrisCenter for Gene Therapy, City of Hope-Beckman Research Institute, Duarte, CA, USA. kmorris@coh.org.ORCID 0000-0002-0157-0553
City of Hope · USGriffith University · AU

Funding

UC San Diego Clinical and Translational Research InstituteUL1TR001442 · NCATS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI FIRESTEIN, GARY S, HOGARTH, MICHAEL · 2015 to 2024
$88.3M
VirologyP30AI036214 · NIAID · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI David Mitchell Smith · 1994 to 2026
$78.4M
Transcriptional control, targeted modification, and excision of HIV in the brainR01MH113407 · NIMH · BECKMAN RESEARCH INSTITUTE/CITY OF HOPE · PI BURNETT, JOHN CORY · 2017 to 2021
$3.0M
Targeted transcriptional activation of HIVR56AI147684 · NIAID · BECKMAN RESEARCH INSTITUTE/CITY OF HOPE · PI MORRIS, KEVIN V · 2020 to 2020
$440k
NCATS NIH HHS UL1 TR001442NIAID NIH HHS P30 AI036214NIAID NIH HHS R56 AI147684NIMH NIH HHS R01 MH113407
6 · The paper itself

Abstract

Human Immunodeficiency Virus (HIV-1) produces a persistent latent infection. Control of HIV-1 using combination antiretroviral therapy (cART) comes at the cost of life-shortening side effects and development of drug-resistant HIV-1. An ideal and safer therapy should be deliverable in vivo and target the stable epigenetic repression of the virus, inducing a stable "block and lock" of virus expression. Towards this goal, we developed an HIV-1 promoter-targeting Zinc Finger Protein (ZFP-362) fused to active domains of DNA methyltransferase 3 A to induce long-term stable epigenetic repression of HIV-1. Cells were engineered to produce exosomes packaged with RNAs encoding this HIV-1 repressor protein. We find here that the repressor loaded anti-HIV-1 exosomes suppress virus expression and that this suppression is mechanistically driven by DNA methylation of HIV-1 in humanized NSG mouse models. The observations presented here pave the way for an exosome-mediated systemic delivery platform of therapeutic cargo to epigenetically repress HIV-1 infection.

Indexed as

AnimalsBrainCell LineDNA (Cytosine-5-)-MethyltransferasesDNA MethylationDNA Methyltransferase 3AEpigenetic RepressionExosomesGene Expression Regulation, ViralGenetic VectorsHEK293 CellsHIV-1HIV InfectionsHumansLentivirusLeukocytes, MononuclearDNA (Cytosine-5-)-MethyltransferasesDNA Methyltransferase 3ADNMT3A protein, humanRNA, Messenger

Identifiers

PMID34545097
PMCPMC8452652
OpenAlexW3201256653

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.