Cytotoxic Organometallic Iridium(III) Complexes

Iridium complexes attract a lot of attention as highly promising antitumor agents due to their various structures, which offer the modification of their physicochemical and biological effects. Compared to conventional platinum-based drugs, iridium complexes are commonly thought to be more active in...

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Main Author: Irena Kostova
Format: Article
Language:English
Published: MDPI AG 2025-02-01
Series:Molecules
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Online Access:https://www.mdpi.com/1420-3049/30/4/801
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author Irena Kostova
author_facet Irena Kostova
author_sort Irena Kostova
collection DOAJ
description Iridium complexes attract a lot of attention as highly promising antitumor agents due to their various structures, which offer the modification of their physicochemical and biological effects. Compared to conventional platinum-based drugs, iridium complexes are commonly thought to be more active in tumors, resistant to platinum agents and more stable in air and moisture conditions. Chloridoiridium complexes offer a range of advantages facilitating their rational design, reactivity and photochemical activity, leading to different cytotoxic profiles, diverse mechanisms of action and specific intracellular organelles as targets. They are also known as good light-mediated chemotherapeutics, serving as bioimaging and biosensing agents. The potential biological and photophysical properties of chloridoiridium(III) complexes can be readily controlled by suitable ligand modifications and substitution patterns, providing a wide range of versatile structures. Over the years, numerous different structural types of chloridoiridium complexes have been developed and studied for their antineoplastic activity. In this review, the recent advances in the cytotoxicity studies of chloridoiridium(III) compounds have been summarized. The studied complexes have been categorized in this review according to the number of coordinated ligands, the type of donor atoms, nuclearity of the complexes, etc., allowing for a thorough discussion of the structure–activity relationship.
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spelling doaj-art-bb5de1d783464645af753708be9ddc4d2025-08-20T03:12:09ZengMDPI AGMolecules1420-30492025-02-0130480110.3390/molecules30040801Cytotoxic Organometallic Iridium(III) ComplexesIrena Kostova0Department of Chemistry, Faculty of Pharmacy, Medical University-Sofia, 1000 Sofia, BulgariaIridium complexes attract a lot of attention as highly promising antitumor agents due to their various structures, which offer the modification of their physicochemical and biological effects. Compared to conventional platinum-based drugs, iridium complexes are commonly thought to be more active in tumors, resistant to platinum agents and more stable in air and moisture conditions. Chloridoiridium complexes offer a range of advantages facilitating their rational design, reactivity and photochemical activity, leading to different cytotoxic profiles, diverse mechanisms of action and specific intracellular organelles as targets. They are also known as good light-mediated chemotherapeutics, serving as bioimaging and biosensing agents. The potential biological and photophysical properties of chloridoiridium(III) complexes can be readily controlled by suitable ligand modifications and substitution patterns, providing a wide range of versatile structures. Over the years, numerous different structural types of chloridoiridium complexes have been developed and studied for their antineoplastic activity. In this review, the recent advances in the cytotoxicity studies of chloridoiridium(III) compounds have been summarized. The studied complexes have been categorized in this review according to the number of coordinated ligands, the type of donor atoms, nuclearity of the complexes, etc., allowing for a thorough discussion of the structure–activity relationship.https://www.mdpi.com/1420-3049/30/4/801chloridoiridium(III)complexesanticancercytotoxicreview
spellingShingle Irena Kostova
Cytotoxic Organometallic Iridium(III) Complexes
Molecules
chloridoiridium(III)
complexes
anticancer
cytotoxic
review
title Cytotoxic Organometallic Iridium(III) Complexes
title_full Cytotoxic Organometallic Iridium(III) Complexes
title_fullStr Cytotoxic Organometallic Iridium(III) Complexes
title_full_unstemmed Cytotoxic Organometallic Iridium(III) Complexes
title_short Cytotoxic Organometallic Iridium(III) Complexes
title_sort cytotoxic organometallic iridium iii complexes
topic chloridoiridium(III)
complexes
anticancer
cytotoxic
review
url https://www.mdpi.com/1420-3049/30/4/801
work_keys_str_mv AT irenakostova cytotoxicorganometalliciridiumiiicomplexes