Complexation of clofazimine by macrocyclic cucurbit[7]uril reduced its cardiotoxicity without affecting the antimycobacterial efficacy | |
Li S.1; Chan J.Y.-W.1; Li Y.2; Bardelang D.3; Zheng J.2![]() ![]() ![]() | |
2016 | |
Source Publication | Organic and Biomolecular Chemistry
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ISSN | 14770520 |
Volume | 14Issue:31Pages:7563-7569 |
Abstract | Cucurbit[7]uril (CB[7]) has recently attracted increasing attention in pharmaceutical sciences due to its great potential in improving the physicochemical properties and bioactivity of drug molecules. Herein, we have investigated the influence of CB[7]'s complexation on the solubility, antimycobacterial activity, and cardiotoxicity of a model anti-tuberculosis drug, clofazimine (CFZ), that has poor water-solubility and inherent cardiotoxicity. In our study, CFZ was found to be complexed by CB[7], in a 1:1 binding mode with a relatively strong binding affinity (in the order of magnitude of 10-10 M), as determined by the phase solubility method via HPLC-UV analysis and H NMR titration, as well as UV-visible spectroscopic titration, and further confirmed by electrospray ionization mass spectrometry (ESI-MS). Upon complexation, the solubility of virtually insoluble CFZ was significantly increased, reaching a concentration of up to approximately 0.53-fold of the maximum solubility of CB[7]. The inherent cardiotoxicity of CFZ was dramatically reduced to almost nil in the presence of CB[7]. Importantly, on the other hand, such a supramolecular complexation of the drug did not compromise its therapeutic efficacy, as shown by the antimycobacterial activities examined against Mycobacterium smegmatis, demonstrating the significant potential of CB[7] as a functional pharmaceutical excipient. |
DOI | http://doi.org/10.1039/c6ob01060a |
URL | View the original |
Indexed By | SCI |
Language | 英语 |
WOS Research Area | Chemistry |
WOS Subject | Chemistry, Organic |
WOS ID | WOS:000381419700019 |
Fulltext Access | |
Citation statistics | |
Document Type | Journal article |
Collection | Institute of Chinese Medical Sciences Faculty of Health Sciences |
Corresponding Author | Wang R. |
Affiliation | 1.State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, China 2.Faculty of Health Sciences, University of Macau, Taipa, China 3.Aix-Marseille Université, CNRS, Institut de Chimie Radicalaire, UMR 7273, 13013 Marseille, France 4.Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, China |
First Author Affilication | Institute of Chinese Medical Sciences |
Corresponding Author Affilication | Institute of Chinese Medical Sciences |
Recommended Citation GB/T 7714 | Li S.,Chan J.Y.-W.,Li Y.,et al. Complexation of clofazimine by macrocyclic cucurbit[7]uril reduced its cardiotoxicity without affecting the antimycobacterial efficacy[J]. Organic and Biomolecular Chemistry,2016,14(31):7563-7569. |
APA | Li S..,Chan J.Y.-W..,Li Y..,Bardelang D..,Zheng J..,...&Wang R..(2016).Complexation of clofazimine by macrocyclic cucurbit[7]uril reduced its cardiotoxicity without affecting the antimycobacterial efficacy.Organic and Biomolecular Chemistry,14(31),7563-7569. |
MLA | Li S.,et al."Complexation of clofazimine by macrocyclic cucurbit[7]uril reduced its cardiotoxicity without affecting the antimycobacterial efficacy".Organic and Biomolecular Chemistry 14.31(2016):7563-7569. |
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