Abstract |
In the present work, we report the design and synthesis of a set of iodinated quinazolinones carrying benzenesulfonamide moiety as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors. The target compounds showed promising inhibitory activity against the four examined human (h) CA isoforms; I, II, IX and XII. Compounds 4-18 displayed variable inhibition constants, ranging as follows: 7.6-782.8 nM for hCA I, 34.4-412.1 nM for hCA II, 29.1-2225.3 nM for hCA IX and 8.8-429.4 nM for hCA XII. Compound 9, the most potent against the tumor-specific CA IX/CA XII (KI = 29.1 and 8.8 nM) gives the possibility to evaluate its cytotoxicity and selectivity in vitro against HepG-2, HCT-116 and MCF-7 cancer cell lines. Compound 9 showed significant cytotoxicity against the tumor cell lines (IC50 = 1.78, 1.94 and 3.07 μM, respectively) and relatively lower toxicity against WI38 normal cell line. The radiosensitizing activity of compound 9 was evaluated and displayed an increase in the radiation-induced cell death in cancer cells after receiving a single dose of 8 Gy gamma radiation. Thus, radiation was able to enhance the antiproliferative activity of compound 9. Molecular docking of 9 into the active site of CA IX and XII revealed the key interactions that could explain its potent activity and selectivity towards these isoforms.
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Authors | Aiten M Soliman, Mostafa M Ghorab, Silvia Bua, Claudiu T Supuran |
Journal | European journal of medicinal chemistry
(Eur J Med Chem)
Vol. 200
Pg. 112449
(Aug 15 2020)
ISSN: 1768-3254 [Electronic] France |
PMID | 32485534
(Publication Type: Journal Article)
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Copyright | Copyright © 2020 Elsevier Masson SAS. All rights reserved. |
Chemical References |
- Antineoplastic Agents
- Carbonic Anhydrase Inhibitors
- Isoenzymes
- Radiation-Sensitizing Agents
- Sulfonamides
- benzenesulfonamide
- Carbonic Anhydrases
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Topics |
- Antineoplastic Agents
(chemical synthesis, chemistry, pharmacology)
- Carbonic Anhydrase Inhibitors
(chemical synthesis, chemistry, pharmacology)
- Carbonic Anhydrases
(metabolism)
- Cell Death
(drug effects)
- Cell Line
- Cell Proliferation
(drug effects)
- Dose-Response Relationship, Drug
- Drug Screening Assays, Antitumor
- Humans
- Isoenzymes
(antagonists & inhibitors, metabolism)
- Molecular Docking Simulation
- Molecular Structure
- Radiation-Sensitizing Agents
(chemical synthesis, chemistry, pharmacology)
- Structure-Activity Relationship
- Sulfonamides
(chemistry, pharmacology)
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