A series of 2-thiazolylhydrazone derivatives have been investigated for the ability to inhibit the activity of the A and B isoforms of monoamine oxidase (MAO) selectively. All of the compounds showed high activity against both the MAO-A and the MAO-B isoforms with pKi values ranging between 5.92 and 8.14 for the MAO-A and between 4.69 and 9.09 for the MAO-B isoforms. Both the MAO-A and the MAO-B isoforms, deposited in the Protein Data Bank as model 2BXR and 1GOS, respectively, were considered in a computational study performed with docking techniques on the most active and MAO-B-selective inhibitor, 18.
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http://dx.doi.org/10.1021/jm060869d | DOI Listing |
Mol Cell Biochem
December 2024
Department XIII Infectious Diseases-Parasitology, "Victor Babeș" University of Medicine and Pharmacy of Timișoara, Timișoara, Romania.
The global burden of cancer as a major cause of death and invalidity has been constantly increasing in the past decades. Monoamine oxidases (MAO) with two isoforms, MAO-A and MAO-B, are mammalian mitochondrial enzymes responsible for the oxidative deamination of neurotransmitters and amines in the central nervous system and peripheral tissues with the constant generation of hydrogen peroxide as the main deleterious ancillary product. However, given the complexity of cancer biology, MAO involvement in tumorigenesis is multifaceted with different tumors displaying either an increased or decreased MAO profile.
View Article and Find Full Text PDFEur J Med Chem
December 2024
Department of Pharmacy-Pharmaceutical Sciences, University of Bari Aldo Moro, Via E. Orabona 4, 70125, Bari, Italy. Electronic address:
Drug resistance in cancer is determined by genetic mutations and adaptations of tumor cells to drug treatments, raising a challenge in the treatment of cancer. Factors such as prolonged drug exposure, genetic variability among patients, and tumor heterogeneity have been established as contributors to rising incidence of drug resistance, prompting ongoing research into alternative therapies and combination treatments to overcome this challenge. Monoamine oxidases (MAOs), including both isoforms MAO-A and MAO-B, are mitochondrial enzymes responsible for the catabolism of monoamine neurotransmitters such as dopamine, norepinephrine, and serotonin.
View Article and Find Full Text PDFJ Neural Transm (Vienna)
December 2024
Clinical Neurochemistry, Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital Würzburg, Würzburg, Germany.
Monoamine oxidase catalyzes oxidative deamination of monoamine transmitters and plays a critical role in the pathogenesis of neuropsychiatric diseases. Monoamine oxidase is classified into type A and B (MAO-A, MAO-B) according to the substrate specificity and sensitivity to inhibitors. The isoenzymes are different proteins coded by different genes localized on the X-chromosome, but they have identical intron-exon organization, similar protein structure and enzymatic mechanism and are considered to be derived from the same ancestral gene.
View Article and Find Full Text PDFACS Med Chem Lett
October 2024
Department of Life and Environmental Sciences, University of Cagliari, University Campus, S.P. 8 km 0.700, 09042 Monserrato, Italy.
A small library of 1-(4-nitrophenyl)-3-arylprop-2-en-1-one derivatives was synthesized to identify new human monoamine oxidase B selective inhibitors. Their inhibitory activity toward MAO-A and MAO-B isoforms was evaluated to determine their potency and selectivity. All newly synthesized compounds were nanomolar inhibitors of the B isoform with IC concentrations ranging from 120 to 2.
View Article and Find Full Text PDFInt J Mol Sci
September 2024
Department III-Pathophysiology, "Victor Babeș" University of Medicine and Pharmacy of Timișoara, E. Murgu Sq. no 2, 300041 Timișoara, Romania.
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