Evidence map›Paper›PMID 31702119›Full record

ArticleStem cells translational medicine2020

Antibacterial activity of human mesenchymal stem cells mediated directly by constitutively secreted factors and indirectly by activation of innate immune effector cells.

Lyndah Chow, Valerie Johnson, Renata Impastato, Jonathan Coy, Alyssa Strumpf, Steven Dow

Abstract read
In one paragraph

Article in Stem cells translational medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 104 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
104citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

104 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
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  7. Review
  8. Review
  9. Article
  10. Nonantibiotic Treatment of Clinical Multidrug-Resistant Bacterial Isolates Using Chitosan Nanoparticles as a Carrier for the Supernatant of Mesenchymal Stem Cells.The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2026
    Article
  11. Review
  12. Article
  13. What's New in Musculoskeletal Basic Science.The Journal of bone and joint surgery. American volume · 2025
    Article
  14. Article
  15. Mesenchymal stromal cell extracellular vesicles reduceAmerican journal of physiology. Lung cellular and molecular physiology · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Let-7b-5p loaded Mesenchymal Stromal Cell Extracellular Vesicles reducebioRxiv : the preprint server for biology · 2025
    Article
  20. Review

44 more citing papers are in PubMed but not listed here.

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

6 authors.

Lyndah ChowCenter for Immune and Regenerative Medicine, Department of Clinical Sciences, Colorado State University, Ft. Collins, Colorado.ORCID 0000-0002-6413-9517
Valerie JohnsonCenter for Immune and Regenerative Medicine, Department of Clinical Sciences, Colorado State University, Ft. Collins, Colorado.
Renata ImpastatoCenter for Immune and Regenerative Medicine, Department of Clinical Sciences, Colorado State University, Ft. Collins, Colorado.
Jonathan CoyCenter for Immune and Regenerative Medicine, Department of Clinical Sciences, Colorado State University, Ft. Collins, Colorado.
Alyssa StrumpfCenter for Immune and Regenerative Medicine, Department of Clinical Sciences, Colorado State University, Ft. Collins, Colorado.
Steven DowCenter for Immune and Regenerative Medicine, Department of Clinical Sciences, Colorado State University, Ft. Collins, Colorado.

Funding

Biomedical Research Training for VeterinariansT32OD010437 · OD · COLORADO STATE UNIVERSITY · PI Gregg A Dean, KELLY S SANTANGELO · 2012 to 2026
$6.2M
Veterinary Pre-Doctoral Research Scholars ProgramT32OD012201 · OD · COLORADO STATE UNIVERSITY · PI VANDEWOUDE, SUE · 2013 to 2019
$795k
Veterinary Scholars Summer Research ProgramT35OD015130 · OD · COLORADO STATE UNIVERSITY · PI ZABEL, MARK D · 2012 to 2021
$654k
NIH HHS T32 OD010437NIH HHS T32 OD012201NIH HHS T32OD012201NIH HHS T35 OD015130
6 · The paper itself

Abstract

Mesenchymal stem cells (MSC) have been shown to improve wound healing and suppress inflammatory immune responses. Newer research also indicates that MSC exhibit antimicrobial activity, although the mechanisms underlying this activity have not been fully elucidated. Therefore, we conducted in vitro and in vivo studies to examine the ability of resting and activated MSC to kill bacteria, including multidrug resistant strains. We investigated direct bacterial killing mechanisms and the interaction of MSC with host innate immune responses to infection. In addition, the activity of MSC against chronic bacterial infections was investigated in a mouse biofilm infection model. We found that MSC exhibited high levels of spontaneous direct bactericidal activity in vitro. Moreover, soluble factors secreted by MSC inhibited Staphylococcus aureus biofilm formation in vitro and disrupted the growth of established biofilms. Secreted factors from MSC also elicited synergistic killing of drug-resistant bacteria when combined with several major classes of antibiotics. Other studies demonstrated interactions of activated MSC with host innate immune responses, including triggering of neutrophil extracellular trap formation and increased phagocytosis of bacteria. Finally, activated MSC administered systemically to mice with established S. aureus biofilm infections significantly reduced bacterial numbers at the wound site and improved wound healing when combined with antibiotic therapy. These results indicate that MSC generate multiple direct and indirect, immunologically mediated antimicrobial activities that combine to help eliminate chronic bacterial infections when the cells are administered therapeutically.

Indexed as

Anti-Infective AgentsHumansImmunity, InnateMesenchymal Stem CellsNeutrophilsAnti-Infective Agentsantibacterialcytokinesinfectionneutrophilpeptidesstem cells

Identifiers

PMID31702119
PMCPMC6988770

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.