Title:In vitro Inhibition Profiles and Molecular Docking Analysis of Benzohydrazide
Derivatives on Red Blood Cell Carbonic Anhydrases Isozymes
Volume: 18
Issue: 5
Author(s): Işıl Nihan Korkmaz, Pınar Güller*, Ramazan Kalın, Aykut Öztekin and Hasan Özdemir
Affiliation:
- Department of Chemistry, Faculty of Science, Atatürk University, Erzurum, 25240, Turkey
Keywords:
Carbonic anhydrase, drug-likeness, structure-activity relationship, inhibition, molecular docking, isozymes.
Abstract:
Background: Carbonic anhydrases (CAs, EC 4.2.1.1) are metalloenzymes that contain
zinc ions on the active side and convert carbon dioxide to bicarbonate in metabolism. Human CA-I
and CA-II, which are the most abundant CA isozymes in erythrocytes, have been therapeutic targets
in the treatment of glaucoma, hypertension, ulcer, osteoporosis, and, neurological disorders. Benzohydrazides
are biologically active compounds, and their various pharmacological effects have
been reported.
Aim: In light of this, the objective of this study was to investigate the in vitro effects of benzohydrazide
derivatives on the activities of hCA-I and hCA-II, determine the compounds as selective inhibitors
for these isoenzymes, and estimate the inhibition mechanism through molecular docking
studies.
Methods: In this work, we synthesized the 10 different derivatives of benzohydrazide containing
various functional group of different positions.
Results: As a result, all benzohydrazide derivatives inhibited both isozymes in vitro and 2-amino 3-
nitro benzohydrazide (10) was found to be the most efficient inhibitor of both hCA isozymes with
the IC50 values of 0.030 and 0.047 μM, respectively. In the molecular docking studies, 3-amino 2-
methyl benzohydrazide (3) had the lowest estimated free binding energies against hCA isozymes as
-6.43 and -6.13 kcal/mol.
Conclusion: In this study, hCA-I & II isozymes were isolate from human erythrocytes. CA isozymes
are one of these target enzymes. WBC hope that the benzohydrazide derivatives, can guide
remedies targeting carbonic anhydrase.