ArticleArchives of microbiology2025
Export of eDNA is a mechanism used by Mycobacterium avium subsp. hominissuis for survival within host macrophages.
Article in Archives of microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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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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3 authors.
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Abstract
Mycobacterium avium subsp. hominissuis (M. avium) is a pathogen that causes pulmonary and systemic infection in humans. Mycobacterial infection activates both pro-inflammatory and anti-inflammatory pathways modulating these routes to escape killing. eDNA has a role for environmental survival and biofilm formation of M. avium. We hypothesized that M. avium eDNA might play a role in macrophages survival. To investigate the macrophage response to M. avium eDNA, we utilized two virulent strains of M. avium, eDNA-deficient mutants, and nonvirulent Mycobacterium smegmatis. eDNA-deficient mutants were attenuated at macrophage survival and yielded significantly higher IL-1β than wildtype bacterium, while M. avium, but not M. smegmatis, suppresses IL-1β production and NLRP3 expression by host macrophages. We also observed that M. avium triggered IFN-β production in a DNA-dependent manner but did not have an effect on cGAS expression. These data indicate that M. avium strains modulate macrophage responses in an eDNA dependent manner.
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