ArticleBMC immunology2020
Phosphate starvation enhances phagocytosis of Mycobacterium bovis/BCG by macrophages.
Article in BMC immunology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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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.
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Who cites it
4 citing papers in PubMed, 6 citations in OpenAlex.
- Zinc-limitedInfection and immunity · 2025Article
- The value of LAM and LprG in extracellular vesicles in the diagnostic and therapeutic field of renal tuberculosis.Frontiers in tuberculosis · 2025Review
- Bacillus Calmette-Guérin-Induced Human Mast Cell Activation Relies on IL-33 Priming.International journal of molecular sciences · 2022Article
- Lessons from Bacillus Calmette-Guérin: Harnessing Trained Immunity for Vaccine Development.Cells · 2020Review
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
backgroundTuberculosis is an important health problem worldwide. The only available vaccine is M. bovis/BCG, an attenuated mycobacterium that activates the innate and the acquired immune system after being phagocytosed by macrophages and dendritic cells. Vaccination fails to prevent adult pulmonary tuberculosis although it may have a protective effect in childhood infection. Understanding how BCG interacts with macrophages and other immunocompetent cells is crucial to develop new vaccines.
resultsIn this study we showed that macrophages phagocytose M. bovis/BCG bacilli with higher efficiency when they are cultured without phosphate. We isolated mycobacterial membranes to search for mycobacterial molecules that could be involved in these processes; by immunoblot, it was found that the plasma membranes of phosphate-deprived bacilli express the adhesins PstS-1, LpqH, LprG, and the APA antigen. These proteins are not detected in membranes of bacilli grown with usual amounts of phosphate.
conclusionsThe interest of our observations is to show that under the metabolic stress implied in phosphate deprivation, mycobacteria respond upregulating adhesins that could improve their capacity to infect macrophages. These observations are relevant to understand how M. bovis/BCG induces protective immunity.
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Registered trials
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