Microbial secondary metabolites are well-known resource for drug discovery. Kitasatospora is one of the rare genera of Actinomycetes and important antibiotics producer that are not fully explored. Recently an explosively increasing number of reports have proved that the genus is capable of producing various bioactive secondary metabolites. Here, we comprehensively summarized secondary metabolites from Kitasatospora strains including their chemical structures, biological effects, mechanisms of actions together with the related genomic and biosynthetic analyses. The review covered more than 100 metabolites with their significant pharmacological properties. Some of these natural products which include tyropeptin has been optimized to a promising lead compound. This work provides detailed information of Kitasatospora-derived natural products and presents their potential for therapeutically relevant utilization, which would inspire the drug discovery from this genus in future.
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http://dx.doi.org/10.1002/cbdv.202401473 | DOI Listing |
Science
January 2025
NOMIS Center for Immunobiology and Microbial Pathogenesis, Salk Institute for Biological Studies, La Jolla, CA, USA.
The metabolic landscape of cancer greatly influences antitumor immunity, yet it remains unclear how organ-specific metabolites in the tumor microenvironment influence immunosurveillance. We found that accumulation of primary conjugated and secondary bile acids (BAs) are metabolic features of human hepatocellular carcinoma and experimental liver cancer models. Inhibiting conjugated BA synthesis in hepatocytes through deletion of the BA-conjugating enzyme bile acid-CoA:amino acid -acyltransferase (BAAT) enhanced tumor-specific T cell responses, reduced tumor growth, and sensitized tumors to anti-programmed cell death protein 1 (anti-PD-1) immunotherapy.
View Article and Find Full Text PDFAppl Biochem Biotechnol
January 2025
Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, 97333, USA.
Caves are a unique ecosystem that harbor diverse microorganisms, and provide a challenging environment to the dwelling microbial communities, which may boost gene expression and can lead to the production of inimitable bioactive natural products. In this study, we obtained 59 actinobacteria from four different caves located in Bahadurkhel, District Karak, Pakistan. On the basis of taxonomic characteristics, 30 isolates were selected and screened for secondary metabolites production and bioactivity profiling.
View Article and Find Full Text PDFBMC Genomics
January 2025
Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.
The E. coli strains harboring the polyketide synthase (pks) island encode the genotoxin colibactin, a secondary metabolite reported to have severe implications for human health and for the progression of colorectal cancer. The present study involves whole-genome-wide comparison and phylogenetic analysis of pks harboring E.
View Article and Find Full Text PDFNat Microbiol
January 2025
Department of Chemistry, Indiana University, Bloomington, IN, USA.
To overtake competitors, microbes produce and secrete secondary metabolites that kill neighbouring cells and sequester nutrients. This metabolite-mediated competition probably evolved in complex microbial communities in the presence of viral pathogens. We therefore hypothesized that microbes secrete natural products that make competitors sensitive to phage infection.
View Article and Find Full Text PDFSci Rep
January 2025
School of Pharmacy, Chengdu University of TCM, Chengdu, 611137, China.
Habitat requirements and species' ecological suitability are essential conditions for species conservation and management. Under the influence of different environmental variables, assessing the habitat quality of medicinal plants is an important issue to ensure the quality of medicinal plants and protect biodiversity. This study explores the impact of environmental variables on the distribution of Astragalus mongholicus Bunge (A.
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