Détail du document
Identifiant
doi:10.1186/s12866-022-02698-5...
Auteur
Du, Weili Zhao, Yingli Zhang, Li Che, Jialu Liu, Zichen Li, Kun Che, NanyingLangue
enEditeur
BioMed Central
Catégorie
Mycology
Année
2022
Date de référencement
08/03/2023
Mots clés
pulmonary tb lesions status of mtb excretion lung bacteriomes bacterial metacyc functions status lung excretion samples lesions nt tb-e bacteria mtb bacterial pulmonary tuberculosis tb-ne patients bacteriomes metacycRésumé
Background Bacteria in lung play an important role in sustaining lung health.
Understanding the characteristics of bacteriomes in lesions of pulmonary tuberculosis (TB) patients, who excrete Mycobacterium tuberculosis (MTB), is important for TB prevention and effective treatment.
Methods In this study, bacteriomes in lesions from TB patients excreting bacteria (TB-E) and those from TB patients not excreting bacteria (TB-NE) with matched normal lung tissues (NT) were compared by 16S rRNA sequencing.
Bacterial MetaCyc functions in TB lesions were also predicted by PICRUSt2 tool.
Results Alpha diversity of bacteria, including Chao 1 and Shannon indexes, for TB-E was significantly higher than those in TB-NE and NT; while for TB-NE group, Chao 1 index was higher than that in NT group.
Predominant phyla in TB lesions and NT were Proteobacteria , Actinobacteria , Firmicutes , and Bacteroidetes , but analysis of similarity (ANOSIM, p < 0.001) revealed significantly different bacterial compositions among TB-E, TB-NE and NT samples.
As for bacteriomes in TB lesions, a strong association (ANOSIM, p < 0.001) was observed with the status of MTB excretion.
Indicator genera identified in TB-E and TB-NE demonstrated distinctive micro-ecological environments of TB lesions from patients with different clinical manifestations.
Co-occurrence analysis revealed a densely-linked bacterial community in TB-NE compared to that in TB-E. MetaCyc functions responsible for menaquinone synthesis and chorismate metabolism that could potentially impact the persistent-state and nutrient metabolism of MTB were enriched in TB-E samples.
While in TB-NE samples, enrichment of bacterial MetaCyc function responsible for heme b synthesis might contribute to TB pathology through ferroptosis.
Conclusion Bacteriomes and their MetaCyc functions in TB lesions are elucidated, and they are associated with status of MTB excretion among pulmonary TB patients.
These results serve as a basis for designing novel strategies for preventing and treating pulmonary TB disease.
Du, Weili,Zhao, Yingli,Zhang, Li,Che, Jialu,Liu, Zichen,Li, Kun,Che, Nanying, 2022, Bacteriomes in lesions of pulmonary tuberculosis and its association with status of Mycobacterium tuberculosis excretion, BioMed Central
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