The genome analysis of the human lung-associated Streptomyces sp. TR1341 revealed the presence of beneficial genes for opportunistic colonization of human tissues

0544920 - BC 2022 RIV CH eng J - Článek v odborném periodiku
Lara, Ana Catalina - Corretto, Erika - Kotrbová, Lucie - Lorenc, František - Petříčková, K. - Grabic, R. - Chroňáková, Alica
The genome analysis of the human lung-associated Streptomyces sp. TR1341 revealed the presence of beneficial genes for opportunistic colonization of human tissues.
Microorganisms. Roč. 9, č. 8 (2021), č. článku 1547. E-ISSN 2076-2607
Grant CEP: GA MZd(CZ) NV17-30091A; GA MŠMT(CZ) LM2018129; GA MŠMT(CZ) EF16_013/0001775
Institucionální podpora: RVO:60077344
Klíčová slova: adaptations to human tissue colonization * biosynthetic gene clusters * comparative genomics * human lungs * lung pathogenic actinomycetes * respiratory tract * secondary metabolites * Streptomyces
Obor OECD: Microbiology
Impakt faktor: 4.926, rok: 2021
Způsob publikování: Open access
https://www.mdpi.com/2076-2607/9/8/1547

Streptomyces sp. TR1341 was isolated from the sputum of a man with a history of lung and kidney tuberculosis, recurrent respiratory infections, and COPD. It produces secondary metabolites associated with cytotoxicity and immune response modulation. In this study, we complement our previous results by identifying the genetic features associated with the production of these secondary metabolites and other characteristics that could benefit the strain during its colonization of human tissues (virulence factors, modification of the host immune response, or the production of siderophores). We performed a comparative phylogenetic analysis to identify the genetic features that are shared by environmental isolates and human respiratory pathogens. The results showed a high genomic similarity of Streptomyces sp. TR1341 to the plant-associated Streptomyces sp. endophyte_N2, inferring a soil origin of the strain. Putative virulence genes, such as mammalian cell entry (mce) genes were not detected in the TR1341’s genome. The presence of a type VII secretion system, distinct from the ones found in Mycobacterium species, suggests a different colonization strategy than the one used by other actinomycete lung pathogens. We identified a higher diversity of genes related to iron acquisition and demonstrated that the strain produces ferrioxamine B in vitro. These results indicate that TR1341 may have an advantage in colonizing environments that are low in iron, such as human tissue.
Trvalý link: http://hdl.handle.net/11104/0327748