scholarly journals Synthesis and Biological Evaluation of Coumarin-Linked 4-Anilinomethyl-1,2,3-Triazoles as Potent Inhibitors of Carbonic Anhydrases IX and XIII Involved in Tumorigenesis

Metabolites ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 225
Author(s):  
Pavitra S. Thacker ◽  
Prerna L. Tiwari ◽  
Andrea Angeli ◽  
Danaboina Srikanth ◽  
Baijayantimala Swain ◽  
...  
Keyword(s):  
Carbonic Anhydrase ◽  
Biological Evaluation ◽  
Molecular Hybridization ◽  
Carbonic Anhydrases ◽  
Ca Ix ◽  
Synthesis And Biological Evaluation

A series of coumarin-linked 4-anilinomethyl-1,2,3-triazoles (6a–t) was synthesized via a molecular hybridization approach, through carbon C-6 of the coumarin moiety. The synthesized compounds were evaluated for their inhibition of carbonic anhydrase (CA) isoforms I, II, IX and XIII. CAs IX and XIII were selectively inhibited over the off-target isoforms I and II. The best inhibitory profiles against CA IX were shown by compounds 6a, 6e and 6f (Ki < 50 nM), with compound 6e displaying the best inhibition with a Ki value of 36.3 nM. Compounds 6a, 6b, 6j, 6o and 6q exhibited the best inhibitory profiles against CA XIII (Ki < 100 nM). These compounds can be further explored for the discovery of potent and effective CA IX and CA XIII inhibitors.

scholarly journals Novel Diamide-Based Benzenesulfonamides as Selective Carbonic Anhydrase IX Inhibitors Endowed with Antitumor Activity: Synthesis, Biological Evaluation and In Silico Insights

2019 ◽  
Vol 20 (10) ◽  
pp. 2484 ◽  
Author(s):  
Mohamed A. Abdelrahman ◽  
Wagdy M. Eldehna ◽  
Alessio Nocentini ◽  
Silvia Bua ◽  
Sara T. Al-Rashood ◽  
...  
Keyword(s):  
Antitumor Activity ◽  
Carbonic Anhydrase ◽  
Biological Evaluation ◽  
Single Digit ◽  
Reference Drug ◽  
Docking Simulations ◽  
Ca Ix ◽  
Bioisosteric Replacement ◽  
Line Compound ◽  
Synthesis And Biological Evaluation

In this work, we present the synthesis and biological evaluation of novel series of diamide-based benzenesulfonamides 5a–h as inhibitors of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1) isoforms hCA I, II, IX and XII. The target tumor-associated isoforms hCA IX and XII were undeniably the most affected ones (KIs: 8.3–123.3 and 9.8–134.5 nM, respectively). Notably, diamides 5a and 5h stood out as a single-digit nanomolar hCA IX inhibitors (KIs = 8.8 and 8.3 nM). The SAR outcomes highlighted that bioisosteric replacement of the benzylidene moiety, compounds 5a–g, with the hetero 2-furylidene moiety, compound 5h, achieved the best IX/I and IX/II selectivity herein reported with SIs of 985 and 13.8, respectively. Molecular docking simulations of the prepared diamides within CA IX active site revealed the ability of 5h to establish an additional H-bond between the heterocyclic oxygen and HE/Gln67. Moreover, benzenesulfonamides 5a, 5b and 5h were evaluated for their antitumor activity against renal cancer UO-31 cell line. Compound 5h was the most potent derivative with about 1.5-fold more enhanced activity (IC50 = 4.89 ± 0.22 μM) than the reference drug Staurosporine (IC50 = 7.25 ± 0.43 μM). Moreover, 5a and 5h were able to induce apoptosis in UO-31 cells as evidenced by the significant increase in the percent of annexinV-FITC positive apoptotic cells by 22.5- and 26.5-folds, respectively.

scholarly journals Hypoxia-Activated Prodrug Derivatives of Carbonic Anhydrase Inhibitors in Benzenesulfonamide Series: Synthesis and Biological Evaluation

Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2347 ◽  
Author(s):  
Emilie Anduran ◽  
Ashok Aspatwar ◽  
Nanda-Kumar Parvathaneni ◽  
Dennis Suylen ◽  
Silvia Bua ◽  
...  
Keyword(s):  
Carbonic Anhydrase ◽  
Biological Evaluation ◽  
Solid Tumours ◽  
Human Cell Lines ◽  
Carbonic Anhydrases ◽  
Cell Resistance ◽  
Design Synthesis ◽  
Synthesis And Biological Evaluation ◽  
Derivatives Of ◽  
Compound Series

Hypoxia, a common feature of solid tumours’ microenvironment, is associated with an aggressive phenotype and is known to cause resistance to anticancer chemo- and radiotherapies. Tumour-associated carbonic anhydrases isoform IX (hCA IX), which is upregulated under hypoxia in many malignancies participating to the microenvironment acidosis, represents a valuable target for drug strategy against advanced solid tumours. To overcome cancer cell resistance and improve the efficacy of therapeutics, the use of bio-reducible prodrugs also known as Hypoxia-activated prodrugs (HAPs), represents an interesting strategy to be applied to target hCA IX isozyme through the design of selective carbonic anhydrase IX inhibitors (CAIs). Here, we report the design, synthesis and biological evaluations including CA inhibition assays, toxicity assays on zebrafish and viability assays on human cell lines (HT29 and HCT116) of new HAP-CAIs, harboring different bio-reducible moieties in nitroaromatic series and a benzenesulfonamide warhead to target hCA IX. The CA inhibition assays of this compound series showed a slight selectivity against hCA IX versus the cytosolic off-target hCA II and hCA I isozymes. Toxicity and viability assays have highlighted that the compound bearing the 2-nitroimidazole moiety possesses the lowest toxicity (LC50 of 1400 µM) and shows interesting results on viability assays.

Synthesis and Biological Evaluation of New 4-Thiazolidinone Derivatives as Carbonic Anhydrase Inhibitors

2017 ◽  
Vol 14 (2) ◽  
pp. 80-85 ◽  
Author(s):  
Hayriye Genc ◽  
Busra Ceken ◽  
Cigdem Bilen ◽  
Zubeyde Sackes ◽  
Nahit Gencer ◽  
...  
Keyword(s):  
Carbonic Anhydrase ◽  
Biological Evaluation ◽  
Carbonic Anhydrase Inhibitors ◽  
Synthesis And Biological Evaluation

scholarly journals Aryl-4,5-dihydro-1H-pyrazole-1-carboxamide Derivatives Bearing a Sulfonamide Moiety Show Single-digit Nanomolar-to-Subnanomolar Inhibition Constants against the Tumor-associated Human Carbonic Anhydrases IX and XII

2020 ◽  
Vol 21 (7) ◽  
pp. 2621
Author(s):  
Priya Hargunani ◽  
Nikhil Tadge ◽  
Mariangela Ceruso ◽  
Janis Leitans ◽  
Andris Kazaks ◽  
...  
Keyword(s):  
Carbonic Anhydrase ◽  
Inhibitory Activity ◽  
Phenyl Ring ◽  
Drug Targets ◽  
Binding Mode ◽  
Docking Studies ◽  
Carbonic Anhydrases ◽  
Single Digit ◽  
Ca Ix ◽  
Shed Light

A series of new 3-phenyl-5-aryl-N-(4-sulfamoylphenyl)-4,5-dihydro-1H-pyrazole-1-carboxamide derivatives was designed here, synthesized, and studied for carbonic anhydrase (CAs, EC 4.2.1.1) inhibitory activity against the human (h) isozymes I, II, and VII (cytosolic, off-target isoforms), and IX and XII (anticancer drug targets). Generally, CA I was not effectively inhibited, whereas effective inhibitors were identified against both CAs II (KIs in the range of 5.2–233 nM) and VII (KIs in the range of 2.3–350 nM). Nonetheless, CAs IX and XII were the most susceptible isoforms to this class of inhibitors. In particular, compounds bearing an unsubstituted phenyl ring at the pyrazoline 3 position showed 1.3–1.5 nM KIs against CA IX. In contrast, a subset of derivatives having a 4-halo-phenyl at the same position of the aromatic scaffold even reached subnanomolar KIs against CA XII (0.62–0.99 nM). Docking studies with CA IX and XII were used to shed light on the derivative binding mode driving the preferential inhibition of the tumor-associated CAs. The identified potent and selective CA IX/XII inhibitors are of interest as leads for the development of new anticancer strategies.

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