Abstract:
:A new series of pyrimidine derivatives as human carbonic anhydrases (CA, EC 4.2.1.1) inhibitors is here designed by including a 5-fluorouracil (5-FU) moiety, broadly used anticancer medication, in nitrogenous base modulators of the tumor-associated CAs. Most sulfonamide derivatives efficiently inhibit the target CA IX (KIs in the range 0.47-44.7 nM) and CA XII (KIs in the range 2.9-83.1 nM), while the 5-FU coumarin derivatives showed a potent and totally selective inhibitory action against the target CA IX/XII over off-target CA I/II. The X-ray solved crystal structure of CA II in adduct with a representative uracil derivative provided insights on the binding mode to the target of such pyrimidine derivatives. On the basis of potency and selectivity inhibition profiles, coumarin 12a, the sulfonamide CAIs showing the greatest II/IX specificity (4e, 6b and 6d) and the unique subnanomolar CA IX inhibitor 10a were tested in vitro for their antiproliferative action against a panel of eight cancer cell lines. The breast cancer cell lines MDA-MB-231 and T47D were the most susceptible with IC50 values in low to medium micromolar ranges (2.45 ± 0.07-18.86 ± 0.72 μM and 6.86 ± 0.31-40.92 ± 1.59 μM, respectively). A cell cycle analysis showed that 4e and 6d arrest T-47D cells mainly in the G2/M phase. Using an annexin V-FITC apoptosis assay, 4e and 6d were shown to induce an approximately 23.6-fold and 34.8-fold total increase in apoptosis compared to the control, corroborating the concrete potential of 5-FU CAIs for the design of new effective anticancer strategies.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Petreni A,Bonardi A,Lomelino C,Osman SM,ALOthman ZA,Eldehna WM,El-Haggar R,McKenna R,Nocentini A,Supuran CTdoi
10.1016/j.ejmech.2020.112112subject
Has Abstractpub_date
2020-03-15 00:00:00pages
112112eissn
0223-5234issn
1768-3254pii
S0223-5234(20)30079-9journal_volume
190pub_type
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