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Bose A, Sengupta P, Pal U, Senapati S, Ahsan M, Roy S, Das U, Sen K. Encapsulation of Thymol in cyclodextrin nano-cavities: A multi spectroscopic and theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 208:339-348. [PMID: 30343222 DOI: 10.1016/j.saa.2018.10.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 10/03/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
Cyclodextrins have a wide range of applications in different areas of drug delivery and pharmaceutical industry due to their complexation ability and other versatile characteristics. Here we have studied the binding interactions of a small biologically important phenolic molecule, Thymol (Th), with both α and β cyclodextrins (CDs), which are well known drug delivery vehicles. Extent of encapsulation has been determined using several spectroscopic techniques. In fluorescence experiments, significant increase in fluorescence intensities have been discerned for both the CDs but there had been a much early saturation for αCD. Anisotropy experiments have been performed too and very surprisingly no appreciable increase in anisotropy value was observed in either case. Isothermal titration calorimetry (ITC) data, however, show signature of binding of Th with the βCD. These intriguing results were explained with the help of molecular docking and dynamics simulation studies. The docking calculations have shown that Th goes inside both α and βCD. In keeping with the final NMR data and molecular dynamics we have ultimately concluded that solvated Th molecules are the main participants in the interaction with CDs which is responsible for these intriguing behaviors. Finally we have also performed an antioxidant assay to reveal the practical application of such encapsulation. It has been found that on encapsulation there is an enhancement of the antioxidant behavior of Th. Then we have also performed an antibacterial assay to show the unchanged antibacterial properties of Th on encapsulation. Hence it can be deduced that Th can be safely delivered through CDs in living system without hampering its beneficial properties.
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Affiliation(s)
- Adity Bose
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata 700073, West Bengal, India.
| | - Priti Sengupta
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata 700073, West Bengal, India
| | - Uttam Pal
- Chemical Sciences Division, Saha Institute of Nuclear Physics, Block AF, Saltlake, Kolkata 700064, West Bengal, India
| | - Sanjib Senapati
- Department of Biotechnology, Indian Institute of Technology, Madras, IIT P.O., Chennai 600 036, India
| | - Mohd Ahsan
- Department of Biotechnology, Indian Institute of Technology, Madras, IIT P.O., Chennai 600 036, India
| | - Santanu Roy
- Department of Microbiology, Acharya Prafulla Chandra College, New Barrackpore, Kolkata 700131, India
| | - Upasana Das
- Department of Microbiology, Acharya Prafulla Chandra College, New Barrackpore, Kolkata 700131, India
| | - Kamalika Sen
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, India
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Ristić IS, Nikolić L, Nikolić V, Ilić D, Budinski-Simendić J. Synthesis of polyrotaxanes from acetyl-β-cyclodextrin. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2011. [DOI: 10.1134/s0036024411130267] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
A V-type molecule comprising a 2-[2-[4-(dimethylamino)phenyl]ethenyl]pyridinium cyanine branch and a p-aminophenoxy ethyl side arm was synthesized and can form quite different [2]pseudorotaxanes with cucurbit[7]uril (CB[7]) as a model thread in aqueous solution. The CB[7] ring can be switched reversibly from the cyanine branch to the aminophenoxy ethyl side arm by protonation of the aniline group, and the color of the solution was changed from orange red to yellow.
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Affiliation(s)
- Hongyuan Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai 200237, PR China
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Melzak KA, Gizeli E. Relative activity of cholesterol in OPPC/cholesterol/sphingomyelin mixtures measured with an acoustic sensor. Analyst 2009; 134:609-14. [DOI: 10.1039/b813047g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
- Gerhard Wenz
- Organische Makromolekulare Chemie, Saarland University, Geb. C4.2, D-66123 Saarbrücken, Germany.
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Influence of methanol and cyclodextrin cavity size on stoichiometry and binding constant of 3-[2-(9-anthryl)benzoxazol-5-yl]-alanine. J Photochem Photobiol A Chem 2002. [DOI: 10.1016/s1010-6030(02)00269-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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