98%
921
2 minutes
20
The cloning of DNA directly from environmental samples provides a means to functionally access biosynthetic gene clusters present in the genomes of the large fraction of bacteria that remains recalcitrant to growth in the laboratory. Herein, we demonstrate a method by which complementation of phosphopantetheine transferase deletion mutants can be used to restore siderophore biosynthesis and to therefore selectively enrich eDNA libraries for nonribosomal peptide synthetase (NRPS) and polyketide synthase (PKS) gene sequences to unprecedented levels. The common use of NRPS/PKS-derived siderophores across bacterial taxa makes this method generalizable and should allow for the facile selective enrichment of NRPS/PKS-containing biosynthetic gene clusters from large environmental DNA libraries using a wide variety of phylogenetically diverse bacterial hosts.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3565233 | PMC |
http://dx.doi.org/10.1021/cb3004918 | DOI Listing |
Cancer Res Commun
September 2025
Spanish National Cancer Research Centre, Madrid, Madrid, Spain.
Purpose: Advanced, pre-treated TNBC has a dismal prognosis and lacks effective options beyond standard cytotoxics. We previously showed, via phosphoproteomic screening, that CDK6 and ERK hyperactivation are linked to adverse outcomes and represent actionable targets. This prompted us to evaluate palbociclib and binimetinib in advanced TNBC after one or two prior therapies.
View Article and Find Full Text PDFAppl Environ Microbiol
September 2025
Department of Biology, University of Regina, Regina, Saskatchewan, Canada.
Unlabelled: Bovine respiratory disease (BRD) is the primary disease of cattle and is responsible for most of the antibiotic use in the beef industry, both for metaphylaxis and treatment. Infection prevention and targeted treatments would benefit from detecting and identifying bacterial pathogens and, ideally, assessing antibiotic sensitivity. Here, we report success refining targeted metagenomics by hybridization capture sequencing (CapSeq) to detect and genotype bacterial pathogens and genes for antibiotic resistance in BRD.
View Article and Find Full Text PDFSmall
September 2025
School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of AI-Driven Zero-Carbon Technologies, Key Laboratory of New Low-carbon Green Chemical Technology Education Department of Guangxi Zhuang Autonomous Region, Guangxi University, Nanning, 530004, China.
Sarcosine (Sar), a critical potential biomarker for prostate cancer (PCa), is primarily detected via enzyme cascade reactions involving sarcosine oxidase (SOx) and peroxidase. Nevertheless, the intermediate product hydrogen peroxide (HO) tends to diffuse to the bulk solution phase without entering subsequent reaction, leading to suboptimal detection sensitivity and compromised analytical performance. To tackle this challenge, a multilayered sandwich nanozyme cascade sensor (designated as Cu-MOF/Rf@BDC) is proposed through a confinement-mediated HO enrichment strategy.
View Article and Find Full Text PDFGenetics
September 2025
Department of Computational Biology, Cornell University, Ithaca, NY 14853, USA.
Selective sweeps describe the process by which an adaptive mutation arises and rapidly fixes in the population, thereby removing genetic variation in its genomic vicinity. The expected signatures of selective sweeps are relatively well understood in panmictic population models, yet natural populations often extend across larger geographic ranges where individuals are more likely to mate with those born nearby. To investigate how such spatial population structure can affect sweep dynamics and signatures, we simulated selective sweeps in populations inhabiting a two-dimensional continuous landscape.
View Article and Find Full Text PDFMater Today Bio
October 2025
Yunnan Key Laboratory of Breast Cancer Precision Medicine, Institute of Biomedical Engineering, Kunming Medical University, Kunming, 650500, Yunnan, China.
Achieving precise intratumoral accumulation and coordinated activation remains a major challenge in nanomedicine. Photothermal therapy (PTT) provides spatiotemporal control, yet its efficacy is hindered by heterogeneous distribution of PTT agents and limited synergy with other modalities. Here, we develop a dual-activation nanoplatform (IrO-P) that integrates exogenous photothermal stimulation with endogenous tumor microenvironment (TME)-responsive catalysis for synergistic chemodynamic therapy (CDT) and ferroptosis induction.
View Article and Find Full Text PDF