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causes life-threatening infections in low-income countries due to the rise of antibacterial resistance. Innovative pharmacological targets have been investigated and carbonic anhydrases (CAs, EC: 4.2.1.1) encoded by (CAs) emerged as a valuable option. Recently, we developed a large library of - and -benzenesulfonamides characterised by moieties with a different flexibility degree as CAs inhibitors. Stopped flow-based enzymatic assays showed strong inhibition of αCA for this library, while lower affinity was detected against the other isoforms. In particular, cyclic urea emerged for a nanomolar inhibition of αCA ( = 4.7 nM) and high selectivity with respect to human isoenzymes (SI≥ 90). Computational studies revealed the influence of moiety flexibility on inhibitory activity and isoform selectivity and allowed accurate SARs. However, although CAs are involved in the bacterium virulence and not in its survival, we evaluated the antibacterial activity of such compounds, resulting in no direct activity.
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http://dx.doi.org/10.1080/14756366.2023.2201402 | DOI Listing |
ACS Omega
September 2025
Department of Chemistry, Faculty of Arts and Sciences, Kafkas University, 36040 Kars, Turkey.
In this study, we synthesized a series of novel -acetyl Schiff bases (-) containing 1,2,4-triazole moiety and evaluated their potential as anticancer agents through both experimental and computational approaches. Cytotoxicity assays on prostate cancer (PC) (DU145) and normal epithelial cells (PNT1a) demonstrated selective inhibition, particularly for compounds , , and , with IC values of 73.25, 49.
View Article and Find Full Text PDFPLoS One
September 2025
Pharmacognosy and Medicinal Plants Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt.
A novel sulfamoylphenyl-dihydro-thiadiazole derivative (compound 14) has been designed and synthesized as a dual inhibitor targeting EGFR and human carbonic anhydrases (hCA_IX and hCA_XII). Computational studies, including density functional theory (DFT), molecular docking, and molecular dynamics simulations, confirmed its stability, favorable binding interactions, and reactivity profiles. Compound 14 showed potent inhibition of EGFR (IC₅₀ = 10.
View Article and Find Full Text PDFSleep Breath
September 2025
Center for Sleep and Wake Disorders, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden.
Background: The carbonic anhydrase (CA) enzyme plays an important role in the equilibration of carbon dioxide and bicarbonate (HCO) under the production of H ions. Emerging evidence suggest that CA activity may play a fundamental regulatory role on respiratory control mechanisms in obstructive sleep apnea (OSA). Clinical trials suggest that CA inhibitors significantly reduce OSA.
View Article and Find Full Text PDFCarbon and zinc (Zn) metabolism are intrinsically connected in phototrophs, as crucial components involved in CO assimilation, like carbonic anhydrases, are highly abundant Zn proteins. Utilizing these and other proteins, the eukaryotic green algae can maintain phototrophic growth in low CO environments by inducing a carbon concentrating mechanism (CCM). In this work we show that Chlamydomonas dynamically increases its Zn content to accommodate the higher intracellular Zn demand in low CO environments.
View Article and Find Full Text PDFFuture Med Chem
September 2025
Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India.
Aims: To design, synthesize, and assess novel sulfonamide hydrazone derivatives as selective inhibitors of carbonic anhydrase.
Materials And Methods: Two series of 4-(arylidenehydrazinyl)benzenesulfonamides () and N-arylidene-4-methylbenzenesulfonohydrazides () were synthesized and evaluated against recombinant MtCA isoforms 1 and 3, and human carbonic anhydrase isoforms I and II by enzyme inhibition assays. Molecular docking and molecular dynamics simulations assessed the binding stability and coordination with the active-site zinc ion.