ArticleFrontiers in cellular and infection microbiology2026
Article in Frontiers in cellular and infection microbiology, 2026. 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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Authors and funding
14 authors.
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Abstract
Background: Tryptophan plays a key role in regulating human lung homeostasis and immunity through the indoleamine 2,3-dioxygenase (IDO) and aryl hydrocarbon receptor (AhR) signalling pathways. In patients with chronic obstructive pulmonary disease (COPD), altered IDO and AhR activity is observed, potentially favouring infection by pathogens capable of synthesizing their own tryptophan. In this study, we investigated the contribution of tryptophan availability to lung infection by Methods: A chemically defined medium with controlled tryptophan levels was developed, and used to determine bacterial (i) metabolite consumption/excretion; (ii) genome-wide differential gene expression and post-transcriptional regulation; (iii) Results: Under tryptophan-rich conditions, we observed up-regulation of Conclusions: These findings demonstrate that
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