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| http://dx.doi.org/10.18632/aging.100025 | DOI Listing |
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Harnessing the Streptomyces-originating type I-E CRISPR/Cas system for efficient genome editing in Streptomyces.
Sci China Life Sci
January 2025
Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Since their discovery, CRISPR/Cas systems have significantly expanded the genetic toolbox, aiding in the exploration and enhanced production of natural products across various microbes. Among these, class 2 CRISPR/Cas systems are simpler and more broadly used, but they frequently fail to function effectively in many Streptomyces strains. In this study, we present an engineered class 1 type I CRISPR/Cas system derived from Streptomyces avermitilis, which enables efficient gene editing in phylogenetically distant Streptomyces strains.
View Article and Find Full Text PDFSelf-Cascaded Pyroptosis-STING Initiators for Catalytic Metalloimmunotherapy.
J Am Chem Soc
January 2025
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China.
Gasdermin (GSDM)-mediated pyroptosis involves the induction of mitochondrial damage and the subsequent release of mitochondrial DNA (mtDNA), which is anticipated to activate the cGAS-STING pathway, thereby augmenting the antitumor immune response. However, challenges lie in effectively triggering pyroptosis in cancer cells and subsequently enhancing the cGAS-STING activation with specificity. Herein, we developed intelligent self-cascaded pyroptosis-STING initiators of cobalt fluoride (CoF) nanocatalysts for catalytic metalloimmunotherapy.
View Article and Find Full Text PDFECM Modifications Driven by Age and Metabolic Stress Directly Promote the Vascular Smooth Muscle Cell Osteogenic Processes.
Arterioscler Thromb Vasc Biol
January 2025
British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, King's College London, United Kingdom. (M.W., M.F., R.O., L.S., M.M., C.M.S.).
Background: The ECM (extracellular matrix) provides the microenvironmental niche sensed by resident vascular smooth muscle cells (VSMCs). Aging and disease are associated with dramatic changes in ECM composition and properties; however, their impact on the VSMC phenotype remains poorly studied.
Methods: Here, we describe a novel in vitro model system that utilizes endogenous ECM to study how modifications associated with age and metabolic disease impact the VSMC phenotype.
Impact of acute and chronic exposure to sulfamethoxazole on the kinetics and microbial structure of an activated sludge community.
Front Antibiot
April 2024
The Science Academy, Istanbul, Türkiye.
The aim of this study was to reveal the microbial and kinetic impacts of acute and chronic exposure to one of the frequently administered antibiotics, i.e., sulfamethoxazole, on an activated sludge biomass.
View Article and Find Full Text PDFDNA is subject to continual damage, leaving each cell with thousands of individual DNA lesions at any given moment. The efficiency of DNA repair means that most known classes of lesion have a half-life of minutes to hours, but the extent to which DNA damage can persist for longer durations remains unknown. Here, using high-resolution phylogenetic trees from 89 donors, we identified mutations arising from 818 DNA lesions that persisted across multiple cell cycles in normal human stem cells from blood, liver and bronchial epithelium.
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