Cytotoxic triosmium carbonyl clusters : a structure-activity relationship study

A structure–activity relationship (SAR) study of the triosmium carbonyl cluster Os3(CO)10(NCCH3)2 was carried out with a series of clusters of the general formula Os3(CO)12−nLn, cationic osmium clusters and a hemi-labile maltolato-Os cluster. The SAR results showed that good solubility in DMSO and a...

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Main Authors: Top, Siden, Vessières, Anne, Leong, Weng Kee, Lee, Shirley Hui Zhi
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/100836
http://hdl.handle.net/10220/19690
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1008362020-03-07T12:34:49Z Cytotoxic triosmium carbonyl clusters : a structure-activity relationship study Top, Siden Vessières, Anne Leong, Weng Kee Lee, Shirley Hui Zhi School of Physical and Mathematical Sciences DRNTU::Science::Biological sciences::Biochemistry A structure–activity relationship (SAR) study of the triosmium carbonyl cluster Os3(CO)10(NCCH3)2 was carried out with a series of clusters of the general formula Os3(CO)12−nLn, cationic osmium clusters and a hemi-labile maltolato-Os cluster. The SAR results showed that good solubility in DMSO and at least one vacant site are required for cytotoxicity. In vitro evaluation of these new compounds showed that some are selectively active against estrogen receptor (ER)-independent MDA-MB-231 breast cancer cell lines relative to ER-dependent MCF-7 breast cancer cells, suggesting that the compounds have a different biological target specific to MDA-MB-231 cells. In particular, the maltolato cluster exhibits strong antiproliferative activity, with an IC50 value of 3 μM after only 24 h incubation. Additionally, biochemical assays conducted with the cationic cluster show that it induces apoptosis, although a biological target has not yet been identified. Further research to establish the molecular targets of these compounds and to develop improved organometallic clusters as potential breast cancer therapeutics is underway. 2014-06-12T03:30:34Z 2019-12-06T20:29:11Z 2014-06-12T03:30:34Z 2019-12-06T20:29:11Z 2013 2013 Journal Article Lee, H. Z. S., Leong, W. K., Top, S., & Vessières, A. (2014). Cytotoxic Triosmium Carbonyl Clusters: A Structure-Activity Relationship Study. ChemMedChem, 9(7), 1453–1457. 1860-7179 https://hdl.handle.net/10356/100836 http://hdl.handle.net/10220/19690 10.1002/cmdc.201300394 en ChemMedChem © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Science::Biological sciences::Biochemistry
spellingShingle DRNTU::Science::Biological sciences::Biochemistry
Top, Siden
Vessières, Anne
Leong, Weng Kee
Lee, Shirley Hui Zhi
Cytotoxic triosmium carbonyl clusters : a structure-activity relationship study
description A structure–activity relationship (SAR) study of the triosmium carbonyl cluster Os3(CO)10(NCCH3)2 was carried out with a series of clusters of the general formula Os3(CO)12−nLn, cationic osmium clusters and a hemi-labile maltolato-Os cluster. The SAR results showed that good solubility in DMSO and at least one vacant site are required for cytotoxicity. In vitro evaluation of these new compounds showed that some are selectively active against estrogen receptor (ER)-independent MDA-MB-231 breast cancer cell lines relative to ER-dependent MCF-7 breast cancer cells, suggesting that the compounds have a different biological target specific to MDA-MB-231 cells. In particular, the maltolato cluster exhibits strong antiproliferative activity, with an IC50 value of 3 μM after only 24 h incubation. Additionally, biochemical assays conducted with the cationic cluster show that it induces apoptosis, although a biological target has not yet been identified. Further research to establish the molecular targets of these compounds and to develop improved organometallic clusters as potential breast cancer therapeutics is underway.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Top, Siden
Vessières, Anne
Leong, Weng Kee
Lee, Shirley Hui Zhi
format Article
author Top, Siden
Vessières, Anne
Leong, Weng Kee
Lee, Shirley Hui Zhi
author_sort Top, Siden
title Cytotoxic triosmium carbonyl clusters : a structure-activity relationship study
title_short Cytotoxic triosmium carbonyl clusters : a structure-activity relationship study
title_full Cytotoxic triosmium carbonyl clusters : a structure-activity relationship study
title_fullStr Cytotoxic triosmium carbonyl clusters : a structure-activity relationship study
title_full_unstemmed Cytotoxic triosmium carbonyl clusters : a structure-activity relationship study
title_sort cytotoxic triosmium carbonyl clusters : a structure-activity relationship study
publishDate 2014
url https://hdl.handle.net/10356/100836
http://hdl.handle.net/10220/19690
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