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Methicillin-resistant (MRSA) infections are still difficult to treat, despite the availability of many FDA-approved antibiotics. Thus, new compound scaffolds are still needed to treat MRSA. The oxadiazole-containing compound, , has been shown to reduce lipoteichoic acid (LTA) in , but the mechanism that accounts for LTA biosynthesis inhibition remains uncharacterized. Herein, we report the elucidation of the mechanism by which inhibits LTA biosynthesis via utilization of global proteomics, activity-based protein profiling, and lipid analysis via multiple reaction monitoring (MRM). Our data suggest that inhibits LTA biosynthesis via direct binding to PgcA and downregulation of PgsA. We further show that reduces the MRSA load in skin infection (mouse) and decreases pro-inflammatory cytokines in MRSA-infected wounds. Collectively, merits further consideration as a potential drug for staphylococcal infections.
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http://dx.doi.org/10.1021/acs.jmedchem.1c02034 | DOI Listing |
Mol Biol Rep
September 2025
Department of Biotechnology, Daegu University, Gyeongsan, 38453, Republic of Korea.
Background: Bacterial pathogen-associated molecular patterns (PAMPs), specifically lipopolysaccharide (LPS) from Gram-negative bacteria (E. coli, P. aeruginosa) and lipoteichoic acid (LTA) from Gram-positive bacteria (S.
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July 2025
Laboratory of Food and Environmental Hygiene, Joint Department of Veterinary Medicine, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
Bovine endometritis is a common postpartum disease that significantly impairs reproductive performance and reduces economic sustainability in dairy and beef cattle. It is primarily caused by gram-negative and -positive bacteria, triggering strong inflammatory responses in the endometrium. Serum amyloid A (SAA) is an acute-phase protein and precursor of amyloid A (AA) in AA amyloidosis.
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August 2025
Key Laboratory for Food Microbial Technology of Zhejiang Province, College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, People's Republic of China.
Lipoteichoic acid (LTA), a key bioactive substance of the Gram-positive bacterial cell wall, has garnered attention for its immunomodulatory properties. Herein, we investigated the underlying molecular mechanism by which LTA derived from ZJ316 exerts anti-inflammatory effects through interaction with Toll-like receptor 2 (TLR2). Molecular docking, dynamics simulations, and surface plasmon resonance (SPR) indicated a strong and specific binding affinity ( = 1.
View Article and Find Full Text PDFJ Extracell Vesicles
July 2025
Department of Laboratory Medicine, Guangdong Provincial Key Laboratory of Precision Medical Diagnostics, Guangdong Engineering and Technology Research Center for Rapid Diagnostic Biosensors, Guangdong Provincial Key Laboratory of Single-cell and Extracellular Vesicles, Nanfang Hospital, Southern Med
Systemic lupus erythematosus (SLE) has been linked to gut microbiome dysbiosis, notably an overabundance of Streptococcus anginosus; however, the impact of this microbial imbalance on disease pathogenesis remains unclear. Here, we investigated the contribution of S. anginosus-derived extracellular vesicles (SA-EVs) to SLE progression, with an emphasis on lupus nephritis (LN).
View Article and Find Full Text PDFIndividuals with diabetes frequently develop chronic, hyper-inflammatory, non-healing wounds, which are the leading cause of all non-traumatic amputations. Group B (GBS) is a prominent bacterium isolated from diabetic wound infections and in a murine model of diabetic wound infection, GBS stimulates an influx of neutrophils into the wound. Utilizing a transposon mutant screen, we identified 291 genes required for fitness during diabetic wound infection including enzymes involved in glycolipid biosynthesis and lipoteichoic acid (LTA) alanylation.
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