Evidence map›Paper›PMID 22723519›Full record

ArticleJournal of immunology (Baltimore, Md. : 1950)2012

Exosomes isolated from mycobacteria-infected mice or cultured macrophages can recruit and activate immune cells in vitro and in vivo.

Prachi P Singh, Victoria L Smith, Petros C Karakousis, Jeffery S Schorey

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of immunology (Baltimore, Md. : 1950), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 114 papers.

0numbers the graph read from it
0cells of the map it votes in
114citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

114 citing papers in PubMed, 188 citations in OpenAlex.

  1. Review
  2. Article
  3. Frontiers in immunology · 2026
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Extracellular vesicles shed by macrophages co-cultured withBioscience of microbiota, food and health · 2025
    Article
  13. Review
  14. Review
  15. Significance of extracellular vesicles in orchestration of immune responses inFrontiers in cellular and infection microbiology · 2024
    Review
  16. Review
  17. Article
  18. Review
  19. Review
  20. Extracellular Vesicles Released from Macrophages Infected withInternational journal of molecular sciences · 2023
    Article

54 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

4 authors at 2 institutions in 1 country.

Prachi P SinghDepartment of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA.
Victoria L Smith
Petros C Karakousis
Jeffery S Schorey
University of Notre Dame · USJohns Hopkins University · US

Funding

M. avium GPLs in Macrophage Activation and VirulenceR01AI052439 · NIAID · UNIVERSITY OF NOTRE DAME · PI SCHOREY, JEFFREY SCOTT · 2004 to 2014
$3.4M
Macrophage signaling upon M avium infectionR01AI056979 · NIAID · UNIVERSITY OF NOTRE DAME · PI SCHOREY, JEFFREY SCOTT · 2004 to 2008
$1.4M
NIAID NIH HHS AI052439NIAID NIH HHS R01 AI052439NIAID NIH HHS R01 AI056979
6 · The paper itself

Abstract

More than 2 billion people are infected with Mycobacterium. tuberculosis; however, only 5-10% of those infected will develop active disease. Recent data suggest that containment is controlled locally at the level of the granuloma and that granuloma architecture may differ even within a single infected individual. Formation of a granuloma likely requires exposure to mycobacterial components released from infected macrophages, but the mechanism of their release is still unclear. We hypothesize that exosomes, which are small membrane vesicles containing mycobacterial components released from infected macrophages, could promote cellular recruitment during granuloma formation. In support of this hypothesis, we found that C57BL/6 mouse-derived bone marrow macrophages treated with exosomes released from M. tuberculosis-infected RAW264.7 cells secrete significant levels of chemokines and can induce migration of CFSE-labeled macrophages and splenocytes. Exosomes isolated from the serum of M. bovis bacillus Calmette-Guérin-infected mice could also stimulate macrophage production of chemokines and cytokines ex vivo, but the level and type differed during the course of a 60-d infection. Of interest, the exosome concentration in serum correlated strongly with mouse bacterial load, suggesting some role in immune regulation. Finally, hollow fiber-based experiments indicated that macrophages treated with exosomes released from M. tuberculosis-infected cells could promote macrophage recruitment in vivo. Exosomes injected intranasally could also recruit CD11b(+) cells into the lung. Overall, our study suggests that exosomes may play an important role in recruiting and regulating host cells during an M. tuberculosis infection.

Indexed as

AnimalsBacterial LoadBone Marrow CellsCell LineCells, CulturedChemokinesChemotaxis, LeukocyteExosomesFemaleLymphocyte ActivationMacrophagesMiceMice, Inbred C57BLMycobacterium bovisMycobacterium Infections, NontuberculousMycobacterium smegmatisChemokines

Identifiers

PMID22723519
PMCPMC3685416
OpenAlexW1653521872

What OpenQuestion holds

Textmetadata
LicenceTDM
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.