Cited by 751Tuberculosis Research and EpidemiologyMycobacterium research and diagnosisImmune responses and vaccinations

Foamy Macrophages from Tuberculous Patients' Granulomas Constitute a Nutrient-Rich Reservoir for M. tuberculosis Persistence

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Peyron, Pascale, Vaubourgeix, Julien, Poquet, Yannick, Levillain, Florence, Botanch, Catherine, Bardou, Fabienne, Daffé, Mamadou, Emile, Jean-François +4 more·2008·PLoS Pathogens

Abstract

Tuberculosis (TB) is characterized by a tight interplay between Mycobacterium tuberculosis and host cells within granulomas. These cellular aggregates restrict bacterial spreading, but do not kill all the bacilli, which can persist for years. In-depth investigation of M. tuberculosis interactions with granuloma-specific cell populations are needed to gain insight into mycobacterial persistence, and to better understand the physiopathology of the disease. We have analyzed the formation of foamy macrophages (FMs), a granuloma-specific cell population characterized by its high lipid content, and studied their interaction with the tubercle bacillus. Within our in vitro human granuloma model, M. tuberculosis long chain fatty acids, namely oxygenated mycolic acids (MA), triggered the differentiation of human monocyte-derived macrophages into FMs. In these cells, mycobacteria no longer replicated and switched to a dormant non-replicative state. Electron microscopy observation of M. tuberculosis-infected FMs showed that the mycobacteria-containing phagosomes migrate towards host cell lipid bodies (LB), a process which culminates with the engulfment of the bacillus into the lipid droplets and with the accumulation of lipids within the microbe. Altogether, our results suggest that oxygenated mycolic acids from M. tuberculosis play a crucial role in the differentiation of macrophages into FMs. These cells might constitute a reservoir used by the tubercle bacillus for long-term persistence within its human host, and could provide a relevant model for the screening of new antimicrobials against non-replicating persistent mycobacteria.

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  • Both mycobacterial phagosomes and chlamydiophorous vacuoles interact with lipid bodies during bacterial dormancy.

    “Both mycobacterial phagosomes and chlamydiophorous vacuoles interact with lipid bodies during bacterial dormancy (50, 51).”

    From Macrophage defense mechanisms against intracellular bacteria (2015) · cites this paper as [50]

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Research works printed but not linked: 2

  1. [28]Florey H Oxford Uo, editor 1958 Tuberculosis. General pathology based on lectures delivered at the sir william dunn school of pathology Philadelphia and London W.B. Saunders 829 870
  2. [47]Goren M Brennan P 1979 Mycobacterial lipids: chemistry and biological activities. Youmans GP Tuberculosis Philadelphia WB Saunders

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Authors
Peyron, P., Vaubourgeix, J., Poquet, Y., Levillain, F., Botanch, C., Bardou, F., Daffé, M., Emile, J.-F., Marchou, B., Cardona, P.-J., de Chastellier, C., & Altare, F.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Hôpital Ambroise-Paré (FR)
  • Hôpital Purpan (FR)
Corresponding author
Altare, Frédéric
Venue
PLoS Pathogens
Published
2008-11-11
Volume
4
Issue
11
Pages
e1000204
ISSN
  • 1553-7366 (ISSN-L)
  • 1553-7374
OpenAlex
W2091442643
Cited by
751
References
48
Citations by year
2026: 40 · 2025: 42 · 2024: 42 · 2023: 41 · 2022: 47 · 2021: 46 · 2020: 48 · 2019: 55 · 2018: 52 · 2017: 48 · 2016: 46 · 2015: 36 · 2014: 43 · 2013: 42 · 2012: 52
FWCI
15.00
Type
journal article
Language
en
Open access
Locations
  • PLoS Pathogens (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • Styrelsen för Internationellt Utvecklingssamarbete
  • Agence Nationale de la Recherche
  • Centre National de la Recherche Scientifique
Topics
  • Health Sciences › Medicine › Infectious Diseases › Tuberculosis Research and Epidemiology
  • Health Sciences › Medicine › Epidemiology › Mycobacterium research and diagnosis
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
Keywords
foam cells, Mycobacterium tuberculosis, granuloma, bacterial persistence, long-chain fatty acids, lipid droplets, phagosome, monocyte-derived macrophages
MeSH terms
Cell Differentiation, Foam Cells, Granuloma, Humans, Lipids, Macrophages, Mycobacterium Infections, Mycobacterium tuberculosis, Mycolic Acids, Phagocytosis, Tuberculosis

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