A series of benzenesulfonamides incorporating selenazoles with diverse substitution patterns were investigated as inhibitors of six bacterial carbonic anhydrases (CAs, EC 4.2.1.1) from bacterial pathogens, such as Helicobacter pylori (hpCAα was the investigated enzyme), Vibrio cholerae (all the three CAs from this pathogen were considered, VchCAα, VchCAβ and VchCAγ) and Burkholderia pseudomallei (with its two CAs, BpsCAβ and BpsCAγ). All these sulfonamides were effective CA inhibitors, with potencies in the low micromolar or submicromolar range, making them attractive as lead compounds for designing antibacterials with a novel mechanism of action, which could counteract the extensive resistance problem observed with many clinically used antibiotics.
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http://dx.doi.org/10.1080/14756366.2018.1547287 | DOI Listing |
Biochemistry (Mosc)
December 2024
Medicinal Chemistry Center, Togliatti State University, Togliatti, 445020, Russia.
Human carbonic anhydrase IX (CAIX) plays a key role in maintaining pH homeostasis of malignant neoplasms, thus creating a favorable microenvironment for the growth, invasion, and metastasis of tumor cells. Recent studies have established that inhibition of CAIX expressed on the surface of tumor cells significantly increases the efficacy of classical chemotherapeutic agents and makes it possible to suppress the resistance of tumor cells to chemotherapy, as well as to increase their sensitivity to drugs (in particular, to reduce the required dose of cytostatic agents). In this work, we studied the ability of new CAIX inhibitors based on substituted 1,2,4-oxadiazole-containing primary aromatic sulfonamides, to potentiate the cytostatic effect of gefitinib (selective inhibitor of epidermal growth factor receptor tyrosine kinase domain) under hypoxic conditions.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, New Valley University, New Valley 72511, Egypt.
The present study aims to create spiro-N-(4-sulfamoyl-phenyl)-1,3,4-thiadiazole-2-carboxamide derivatives with anticancer activities. The in vitro anticancer evaluation showed that only the novel spiro-acenaphthylene tethered-[1,3,4]-thiadiazole (compound ) exhibited significant anticancer efficacy as a selective inhibitor of tumor-associated isoforms of carbonic anhydrase. Compound demonstrated considerable efficacy against the renal RXF393, colon HT29, and melanoma LOX IMVI cancer cell lines, with IC values of 7.
View Article and Find Full Text PDFMar Drugs
December 2024
Graduate Program in Biochemistry and Molecular Biology, Center of Biosciences, Federal University of Rio Grande do Norte-UFRN, Av. Sen. Salgado Filho, 3000, Natal 59078-900, Brazil.
Carrageenans have demonstrated enhanced antitumor activity upon depolymerization into disaccharides. However, the pharmacological viability of these disaccharides and their mechanisms of antitumor action remains to be fully elucidated. This study aimed to employ computational tools to investigate the pharmacological properties and molecular targets pertinent to cancer of the disaccharides derived from the primary carrageenans.
View Article and Find Full Text PDFInt J Nanomedicine
January 2025
College of Chemical and Material Engineering, Quzhou University, Quzhou, Zhejiang Province, 324000, People's Republic of China.
Background: Precise intraoperative tumor delineation is essential for successful surgical outcomes. However, conventional methods are often incompetent to provide intraoperative guidance due to lack specificity and sensitivity. Recently fluorescence-guided surgery for tumors to delineate between cancerous and healthy tissues has attracted widespread attention.
View Article and Find Full Text PDFRSC Med Chem
December 2024
VNU University of Education, Vietnam National University, Hanoi 144 Xuan Thuy, Cau Giay Ha Noi Vietnam.
Some novel sulphonyl thiourea derivatives (7a-m) containing 4,6-diarylpyrimidine rings were designed and synthesized using a one-pot procedure. These compounds exhibited remarkable dual inhibitory activity against human carbonic anhydrase CA I, CA II, CA IX, and XII isoenzymes and some cancer cell lines. Among them, some thioureas had significantly more potent inhibitory activities in the order of 7l > 7c > 7f (against the CA I isoform), 7f > 7b > 7c (against the CA II isoform), 7c > 7g > 7a > 7b (against the CA IX isoform), and 7d > 7c > 7g > 7f (against the CA XII isoform).
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