Evidence map›Paper›PMID 28566772›Full record

ArticleScientific reports2017

Serum extracellular vesicle depletion processes affect release and infectivity of HIV-1 in culture.

Zhaohao Liao, Dillon C Muth, Erez Eitan, Meghan Travers, Lisa N Learman, Elin Lehrmann, Kenneth W Witwer

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 13% 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Development of surface-functionalized power-free microchip for breast cancer cell-derived extracellular vesicle detection.Analytical sciences : the international journal of the Japan Society for Analytical Chemistry · 2026
    Article
  4. Article
  5. Human Brain Endothelial Cell-Derived Extracellular Vesicles ReduceInternational journal of molecular sciences · 2025
    Article
  6. Bacterial Extracellular Vesicles (BEVs) Derived FromInternational journal of biomaterials · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Inhibition of neutral sphingomyelinase 2 impairs HIV-1 envelope formation and substantially delays or eliminates viral rebound.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article
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

7 authors at 2 institutions in 1 country.

Zhaohao LiaoDepartment of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, MD, United States.
Dillon C MuthDepartment of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, MD, United States.
Erez EitanLaboratory of Neurosciences, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Baltimore, MD, 21224, United States.
Meghan TraversCellular and Molecular Medicine Program, The Johns Hopkins University School of Medicine, Baltimore, MD, United States.
Lisa N LearmanCellular and Molecular Medicine Program, The Johns Hopkins University School of Medicine, Baltimore, MD, United States.
Elin LehrmannLaboratory of Neurosciences, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Baltimore, MD, 21224, United States.ORCID 0000-0002-9869-9475
Kenneth W WitwerDepartment of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, MD, United States. kwitwer1@jhmi.edu.ORCID 0000-0003-1664-4233
Johns Hopkins University · USNational Institutes of Health · US

Funding

Training Program in Cellular and Molecular MedicineT32GM008752 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI RAO, RAJINI · 2000 to 2019
$11.7M
Training Veterinarians for Careers in Biomedical ResearchT32OD011089 · OD · JOHNS HOPKINS UNIVERSITY · PI JOSEPH L MANKOWSKI · 2012 to 2026
$6.7M
Extracellular Vesicle-Mediated Immunomodulation in HIV Infection and Nicotine AbuseR01DA040385 · NIDA · JOHNS HOPKINS UNIVERSITY · PI WITWER, KENNETH W · 2015 to 2019
$2.3M
NIDA NIH HHS R01 DA040385NIGMS NIH HHS T32 GM008752NIH HHS T32 OD011089
6 · The paper itself

Abstract

Extracellular vesicles (EVs) are involved in intercellular communication and affect processes including immune and antiviral responses. Blood serum, a common cell culture medium component, is replete with EVs and must be depleted prior to EV-related experiments. The extent to which depletion processes deplete non-EV particles is incompletely understood, but depleted serum is associated with reduced viability and growth in cell culture. Here, we examined whether serum depleted by two methods affected HIV-1 replication. In cell lines, including HIV-1 latency models, increased HIV-1 production was observed, along with changes in cell behavior and viability. Add-back of ultracentrifuge pellets (enriched in EVs but possibly other particles) rescued baseline HIV-1 production. Primary cells were less sensitive to serum depletion processes. Virus produced under processed serum conditions was more infectious. Finally, changes in cellular metabolism, surface markers, and gene expression, but not miRNA profiles, were associated with depleted serum culture. In conclusion, depleted serum conditions have a substantial effect on HIV-1 production and infectivity. Dependence of cell cultures on "whole serum" must be examined carefully along with other experimental variables, keeping in mind that the effects of EVs may be accompanied by or confused with those of closely associated or physically similar particles.

Indexed as

Cell CommunicationCell Line, TumorCell ProliferationCell SurvivalCulture MediaExtracellular VesiclesGene Expression Regulation, ViralHIV-1HumansMicroRNAsSerumVirus ReplicationCulture MediaMicroRNAs

Identifiers

PMID28566772
PMCPMC5451420
OpenAlexW2951927539

What OpenQuestion holds

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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.