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Anti-Cancer Agents in Medicinal Chemistry

Editor-in-Chief

ISSN (Print): 1871-5206
ISSN (Online): 1875-5992

Research Article

In Vitro Cytotoxicity and Apoptosis Inducing Evaluation of Novel Halogenated Isatin Derivatives

Author(s): Hadi Adibi, Ehsan Beyhaghi, Sonya Hayati, Leila Hosseinzadeh* and Niloufar Amin*

Volume 22, Issue 13, 2022

Published on: 17 March, 2022

Page: [2439 - 2447] Pages: 9

DOI: 10.2174/1871520622666220119091642

Price: $65

Abstract

Background: Isatin (1H-indole-2,3-dione) and its derivatives have been utilized in a variety of biological activities. Anticancer compounds were the most extensively highlighted and explored among the range of beneficial properties.

Objective: Herein, we report the targeting effect of halogenated isatin derivatives on cancer cell mitochondria and their antiproliferative mechanism.

Methods: A series of novel 5-halo-Isatin derivatives consisting of the 5-Amino-1,3,4-thiadiazole-2-thiol scaffold were synthesized and easily conducted in good yields through a condensation reaction between keto groups of Isatin and primary amine under alcoholic conditions, followed by S-benzylation. The compounds were fully characterized using spectroscopic methods such as 1H-NMR, FTIR, mass spectroscopy and then tested in vitro towards three cancer cell lines HT-29 (colon cancer), MCF-7 (breast cancer), and SKNMC (neuroblastoma). Apoptosis induction was investigated through assessment of caspase 3 and mitochondrial membrane potential.

Results: The most potent compounds of 5b, 5r (IC50 = 18,13 μM), and 5n (IC50 = 20,17 μM) were found to show strong anticancer activity, especially for MCF7 cells. Further anticancer mechanism studies indicated that 5b and 5r induced apoptosis through the intrinsic mitochondrial pathway.

Conclusion: This research demonstrated that 5b and 5r have an anticancer property via the modulation of oxidative stress-mediated mitochondrial apoptosis and immune response, which deserves further studies on their clinical applications.

Keywords: Isatin, 1, 3, 4-thiadiazole, cytotoxicity, apoptosis, biological activity, antitumor activities.

Graphical Abstract
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