1
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Nath S, Bhattacharya B, Sarkar U, Singh TS. Solvent Effects on the Photophysical Properties of a Donor-acceptor Based Schiff Base. J Fluoresc 2022; 32:1321-1336. [PMID: 35366165 DOI: 10.1007/s10895-022-02905-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 02/13/2022] [Indexed: 11/24/2022]
Abstract
In this work, a donor-acceptor substituted aromatic system ((E)-N-((E)-3-(4 (dimethylamino)phenyl) allylidene)-4-(trifluoromethyl) benzenamine (DPATB) has been synthesized and its detailed photophysics of intramolecular charge transfer process have been explored on the basis of steady state absorption, fluorescence and time resolved spectroscopy in combination with density functional theory calculations. Large solvent dependency fluorescence spectral shift and the calculated large excited state dipole moment clearly indicate an efficient charge transfer occurring from the donor group to the acceptor moiety in the excited state. Effect on addition of acid and pH on steady state spectral properties further reveals excited state charge transfer character. Quantum chemical calculations were performed in order to study the conformation and polarity of DPATB at their ground as well as excited electronic states. The HOMO and LUMO molecular orbital pictures are obtained at DFT level using B3LYP functional and 6-311 + g(d,p) basis set which clearly support excited state intramolecular charge transfer process. The molecular electrostatic potential maps for the optimized ground state, donor twisted and acceptor twisted geometry shed insight on the electrostatic potential and charge distribution in a system which gives information about the reacting site of the probe and nature of the reaction. In this work, detailed photophysics of excited state intramolecular charge transfer process in donor-acceptor system (DPATB) was evaluated using steady state and time-resolved fluorescence spectroscopy in combination with density functional theory calculations. Large solvent dependency fluorescence spectral shift and the calculated large excited state dipole moment clearly indicate an efficient charge transfer occurring in DPATB. Molecular orbital pictures as obtained from DFT based computational analysis reveals a significant change in the distribution of electron density upon transition from HOMO to LUMO which confirms an ICT process occurring from the donor group to the acceptor moiety in the excited state.
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Affiliation(s)
- Surjatapa Nath
- Department of Chemistry, Assam University, Silchar, Assam, India
| | | | - Utpal Sarkar
- Department of Physics, Assam University, Silchar, India
| | - T Sanjoy Singh
- Department of Chemistry, Assam University, Silchar, Assam, India.
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2
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Mukherjee M, Saha Sardar P, Basu Roy M, Mukherjee P, Ghosh R, Ghosh S. Tracking Zone-wise perturbation during unfolding of some globular proteins using Eu(III) complex of Tetracycline as a probe exhibiting Stark splitting. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 264:120231. [PMID: 34365134 DOI: 10.1016/j.saa.2021.120231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/14/2021] [Accepted: 07/24/2021] [Indexed: 06/13/2023]
Abstract
Enhanced 'Antenna effect' of a suitably designed ternary complex of Eu(III), Tetracycline hydrochloride (TC) and globular proteins viz bovine serum albumin (BSA), human serum albumin (HSA) and β-lactoglobulin A (BLGA) in aqueous medium is employed to characterize the different partially unfolded states along with investigation of the micro- heterogeneous environment of the proteins during their stepwise unfolding. The zone-wise perturbation for the proteins upon denaturation by Urea and Guanidine hydrochloride (Gdn. HCl) is followed by the emission of Eu(III) through 'Antenna Effect' and that of the tryptophan (Trp) residues of the proteins as a function of denaturants both by steady state and time resolved emission study. With Gdn. HCl as denaturant, both BSA and BLGA show quenching of Eu(III) emission compared to pure protein while HSA exhibits an enhancement of antenna effect during unfolding as compared to that in its absence. In the presence of Urea, HSA and BSA show enhancement of antenna effect accompanied by Stark splitting of the 5D0→7F2 transition of Eu(III) although BLGA follows the similar pattern of quenching of Eu(III) emission as observed with Gdn. HCl without any Stark splitting. The proteins exhibit a two state transition with ΔGD values of ~ 2-3 kcal mol-1. Thus the use of Eu(III) emission as an efficient probe is advocating here to rationalize the microenvironment of the proteins during their stepwise unfolding.
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Affiliation(s)
- Moumita Mukherjee
- Present Address: Sri Aurobindo Vidyamandir, Chandannagar, Hoogly, West Bengal, India
| | - Pinki Saha Sardar
- Department of Chemistry, The Bhawanipur Education Society College, Kolkata-700020, West Bengal, India
| | - Maitrayee Basu Roy
- Department of Chemistry, Vidyasagar College for Women, Kolkata-700006, West Bengal, India
| | - Priyanka Mukherjee
- Department of Chemistry and Biochemistry, Asutosh College, Kolkata-700026, India
| | - Rina Ghosh
- Department of Chemistry, St. Xavier's College, Kolkata-700013, India
| | - Sanjib Ghosh
- Department of Chemistry, Adamas University, Barasat, West Bengal, India.
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3
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Li Y, Lee JS. Staring at protein-surfactant interactions: Fundamental approaches and comparative evaluation of their combinations - A review. Anal Chim Acta 2019; 1063:18-39. [DOI: 10.1016/j.aca.2019.02.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 02/15/2019] [Accepted: 02/18/2019] [Indexed: 02/07/2023]
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4
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Kundu P, Das S, Chattopadhyay N. Managing efficacy and toxicity of drugs: Targeted delivery and excretion. Int J Pharm 2019; 565:378-390. [DOI: 10.1016/j.ijpharm.2019.04.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/17/2019] [Accepted: 04/19/2019] [Indexed: 01/03/2023]
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5
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Singh I, Rani R, Luxami V, Paul K. Synthesis of 5-(4-(1H-phenanthro[9,10-d]imidazol-2-yl)benzylidene)thiazolidine-2,4-dione as promising DNA and serum albumin-binding agents and evaluation of antitumor activity. Eur J Med Chem 2019; 166:267-280. [PMID: 30721822 DOI: 10.1016/j.ejmech.2019.01.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 01/19/2019] [Accepted: 01/21/2019] [Indexed: 10/27/2022]
Abstract
A series of phenanthro[9,10-d]imidazole/oxazole and acenaphtho[1,2-d]imidazole with different aryl groups at C2-position has been synthesized. These compounds were in vitro evaluated for antitumor activity against a panel of 60 human cancer cell lines. Compound 8 exhibits higher cytotoxicity towards leukemia, colon, melanoma, renal, and breast cancer cell lines than the other evaluated cell panels and low toxicity against normal cell line Hek293. The binding properties of compound 8 with DNA have been investigated with absorption, emission and circular dichroism as well as thermal denaturation experiments which indicate intercalation with base pairs of human and calf thymus DNA. The molecular docking and site-selective binding studies also reveal the predominant intercalation of compound 8 in base pairs of DNA. The interaction between thiazolidine based phenanthrene 8 and serum albumins (HSA and BSA), transport proteins, has also been explored which shows quenching of fluorescence through static mechanism. The thermodynamic parameters, obtained from van't Hoff relationship indicate the prevalence of hydrogen-bonding/hydrophobic interactions for the binding phenomenon.
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Affiliation(s)
- Iqubal Singh
- School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology, Patiala 147 001, India
| | - Richa Rani
- School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology, Patiala 147 001, India
| | - Vijay Luxami
- School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology, Patiala 147 001, India
| | - Kamaldeep Paul
- School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology, Patiala 147 001, India.
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6
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Sasmal M, Bhowmick R, Musha Islam AS, Bhuiya S, Das S, Ali M. Domain-Specific Association of a Phenanthrene-Pyrene-Based Synthetic Fluorescent Probe with Bovine Serum Albumin: Spectroscopic and Molecular Docking Analysis. ACS OMEGA 2018; 3:6293-6304. [PMID: 31458811 PMCID: PMC6644396 DOI: 10.1021/acsomega.8b00186] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 06/01/2018] [Indexed: 05/20/2023]
Abstract
In this report, the interaction between a phenanthrene-pyrene-based fluorescent probe (PPI) and bovine serum albumin (BSA), a transport protein, has been explored by steady-state emission spectroscopy, fluorescence anisotropy, far-ultraviolet circular dichroism (CD), time-resolved spectral measurements, and molecular docking simulation study. The blue shift along with emission enhancement indicates the interaction between PPI and BSA. The binding of the probe causes quenching of BSA fluorescence through both static and dynamic quenching mechanisms, revealing a 1:1 interaction, as delineated from Benesi-Hildebrand plot, with a binding constant of ∼105 M-1, which is in excellent agreement with the binding constant extracted from fluorescence anisotropy measurements. The thermodynamic parameters, ΔH°, ΔS°, and ΔG°, as determined from van't Hoff relationship indicate the predominance of van der Waals/extensive hydrogen-bonding interactions for the binding phenomenon. The molecular docking and site-selective binding studies reveal the predominant binding of PPI in subdomain IIA of BSA. From the fluorescence resonance energy transfer study, the average distance between tryptophan 213 of the BSA donor and the PPI acceptor is found to be 3.04 nm. CD study demonstrates the reduction of α-helical content of BSA protein on binding with PPI, clearly indicating the change of conformation of BSA.
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7
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Deiana M, Mettra B, Mazur LM, Andraud C, Samoc M, Monnereau C, Matczyszyn K. Two-Photon Macromolecular Probe Based on a Quadrupolar Anthracenyl Scaffold for Sensitive Recognition of Serum Proteins under Simulated Physiological Conditions. ACS OMEGA 2017; 2:5715-5725. [PMID: 30023750 PMCID: PMC6045344 DOI: 10.1021/acsomega.7b00665] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 06/28/2017] [Indexed: 05/13/2023]
Abstract
The binding interaction of a biocompatible water-soluble polycationic two-photon fluorophore (Ant-PIm) toward human serum albumin (HSA) was thoroughly investigated under simulated physiological conditions using a combination of steady-state, time-resolved, and two-photon excited fluorescence techniques. The emission properties of both Ant-PIm and the fluorescent amino acid residues in HSA undergo remarkable changes upon complexation allowing the thermodynamic profile associated with Ant-PIm-HSA complexation to be accurately established. The marked increase in Ant-PIm fluorescence intensity and quantum yield in the proteinous environment seems to be the outcome of the attenuation of radiationless decay pathways resulting from motional restriction imposed on the fluorophore. Fluorescence resonance energy transfer and site-marker competitive experiments provide conclusive evidence that the binding of Ant-PIm preferentially occurs within the subdomain IIA. The pronounced hypsochromic effect and increased fluorescence enhancement upon association with HSA, compared to that of bovine serum albumin (BSA) and other biological interferents, makes the polymeric Ant-PIm probe a valuable sensing agent in rather complex biological environments, allowing facile discrimination between the closely related HSA and BSA. Furthermore, the strong two-photon absorption (TPA) with a maximum located at 820 nm along with a TPA cross section σ2 > 800 GM, and the marked changes in the position and intensity of the band upon complexation definitely make Ant-PIm a promising probe for two-photon excited fluorescence-based discrimination of HSA from BSA.
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Affiliation(s)
- Marco Deiana
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Bastien Mettra
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie, F69342 Lyon, France
| | - Leszek M. Mazur
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Chantal Andraud
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie, F69342 Lyon, France
| | - Marek Samoc
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Cyrille Monnereau
- Univ
Lyon, Ens de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie, F69342 Lyon, France
| | - Katarzyna Matczyszyn
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
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8
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Liu C, Yang W, Du J, Shen P, Yang C. A Boron 2-(2′-pyridyl) Imidazole Fluorescence Probe for Bovine Serum Albumin: Discrimination over Other Proteins and Identification of Its Denaturation. Photochem Photobiol 2017; 93:1414-1422. [DOI: 10.1111/php.12789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Accepted: 04/12/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Chunlin Liu
- College of Biological and Pharmaceutical Science; China Three Gorges University; Yichang China
| | - Wei Yang
- College of Biological and Pharmaceutical Science; China Three Gorges University; Yichang China
| | - Jinya Du
- College of Biological and Pharmaceutical Science; China Three Gorges University; Yichang China
| | - Ping Shen
- College of Biological and Pharmaceutical Science; China Three Gorges University; Yichang China
| | - Changying Yang
- College of Biological and Pharmaceutical Science; China Three Gorges University; Yichang China
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9
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Huang S, Li F, Liao C, Zheng B, Du J, Xiao D. A selective and sensitive fluorescent probe for the determination of HSA and trypsin. Talanta 2017; 170:562-568. [PMID: 28501212 DOI: 10.1016/j.talanta.2017.01.034] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 01/10/2017] [Accepted: 01/12/2017] [Indexed: 01/26/2023]
Abstract
A simple fluorescent probe HBI-GR based on the combination of the fluorophore (p-HBI) in green fluorescent protein (GFP) and Guanine riboside (GR) for HSA was successfully synthesized. HBI-GR showed an obvious fluorescence enhancement toward HSA without interference from other proteins, amino acids, anions and commonly existing metal ions. HBI-GR exhibited high sensitivity towards HSA with a good linear relationship between the fluorescence intensity of HBI-GR and HSA concentration from 0 to 0.06mgmL-1. The limit of detection, based on a signal-to-noise ratio of 3, was 15.09ngmL-1, which was much lower than that of most other reported probes. HBI-GR was almost non-fluorescent because of the bond twisting in the exited state of chromophore HBI. After binding to the hydrophobic pocket of HSA, it showed an obvious fluorescence enhancement due to the rigidifying of the flexible chromophore HBI by the hydrophobic environment. The resulting HBI-GR/HSA system also showed a satisfactory sensing ability toward trypsin through decreased fluorescence intensity with the detection limit of 0.0282ngmL-1. The fluorescence decreasing process was occurred as the lysine and arginine amino acids residues of HSA were cleaved by trypsin, which led to further exposure of HBI-GR to the PBS buffer phase and a concomitant decrease of the HBI-GR fluorescence intensity. Moreover, the probe HBI-GR was successfully used to detect HSA in healthy human urine and human blood serum samples. The practical application of the HBI-GR/HSA system for trypsin detection in healthy human urine also achieved satisfactory result.
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Affiliation(s)
- Shanshan Huang
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, PR China
| | - Fangfang Li
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, PR China; College of Chemical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu 610065, PR China
| | - Caiyun Liao
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, PR China
| | - Baozhan Zheng
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, PR China; College of Chemical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu 610065, PR China
| | - Juan Du
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, PR China.
| | - Dan Xiao
- College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, PR China; College of Chemical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu 610065, PR China.
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10
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Reja SI, Khan IA, Bhalla V, Kumar M. A TICT based NIR-fluorescent probe for human serum albumin: a pre-clinical diagnosis in blood serum. Chem Commun (Camb) 2016; 52:1182-5. [PMID: 26601767 DOI: 10.1039/c5cc08217j] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A TICT based NIR-fluorescent probe 3 has been designed and synthesized, which selectively detects HSA with fluorescence enhancement in blood plasma with a detection limit of 11 nM among the various proteins, nucleotides and thiols tested.
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Affiliation(s)
- Shahi Imam Reja
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University, Amritsar, Punjab, India.
| | - Imran A Khan
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University, Amritsar, Punjab, India.
| | - Vandana Bhalla
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University, Amritsar, Punjab, India.
| | - Manoj Kumar
- Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University, Amritsar, Punjab, India.
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11
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Abstract
Steady state fluorescence measurements have been used for the investigation of interaction between the bovine serum albumin (BSA) and fluorescence probes: 3-hydroxy-2,4-bis[(3-methyl-1,3-benzoxazol-2(3H)-ylidene)methyl]cyclobut-2-en-1-one (SQ6), 3-hydroxy-2,4-bis[(3-methyl-1,3-benzothiazol-2(3H)-ylidene)methyl]cyclobut-2-en-1-one (SQ7) and 3-hydroxy-2,4-bis[(1,3,3-trimethyl-1,3-dihydro-2H-indol-2-ylidene)methyl]cyclobut-2-en-1-one (SQ8). The binding constant between bovine serum albumin and squarine dyes has been determined by using both the Benesi-Hildebrand and Stern-Volmer equations. The negative value of free energy change indicates the existence of a spontaneous complexation process of BSA with squarine dyes.
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Affiliation(s)
- Katarzyna Jurek
- Faculty of Chemical Technology and Engineering, University of Science and Technology, UTP, Bydgoszcz 85-326, Poland.
| | - Janina Kabatc
- Faculty of Chemical Technology and Engineering, University of Science and Technology, UTP, Bydgoszcz 85-326, Poland.
| | - Katarzyna Kostrzewska
- Faculty of Chemical Technology and Engineering, University of Science and Technology, UTP, Bydgoszcz 85-326, Poland.
| | - Marlena Grabowska
- Faculty of Chemical Technology and Engineering, University of Science and Technology, UTP, Bydgoszcz 85-326, Poland.
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12
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Green AM, Abelt CJ. Dual-sensor fluorescent probes of surfactant-induced unfolding of human serum albumin. J Phys Chem B 2015; 119:3912-9. [PMID: 25710498 PMCID: PMC5597305 DOI: 10.1021/jp511252y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two extrinsic fluorescent probes, 3-(dimethylamino)-8,9,10,11-tetrahydro-7H-cyclohepta[a]naphthalen-7-one (1) and 7-(dimethylamino)-2,3-dihydrophenanthren-4(1H)-one (2), are used to probe the unfolding of human serum albumin by sodium dodecyl sulfate (SDS). These probes respond separately to the polarity and H-bond-donating ability of their surroundings. Competitive binding experiments show that fluorophore 1 binds to site I (domain IIA) and 2 binds to site II (domain IIIA). The local acidity of 1 in site I is out of the sensing range of 1, whereas the local acidity of 2 in site II is calculated to be nearly zero on Catalan's solvent acidity index. Both probes show that the first two equivalents of bound SDS result in a decrease in the local polarity of the binding sites. Each subsequent equivalent of SDS gives rise to a dramatic increase in polarity until HSA is saturated with seven molecules of SDS at the end of the specific binding domain. Compound 2 experiences an increase of acidity of 0.10 on Catalan's solvent acidity index through seven equivalents of SDS, but the local acidity for 1 is still out of range. The increase in acidity experienced by 2 is greater than the increase in polarity. This result is consistent with greater exposure of the carbonyl group in 2, but not the bulk of 2, to the aqueous solvent in site II of the SDS-saturated HSA complex.
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Affiliation(s)
- Amy M Green
- Department of Chemistry, College of William and Mary , Williamsburg, Virginia 23185, United States
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13
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Yadav R, Sengupta B, Sen P. Conformational Fluctuation Dynamics of Domain I of Human Serum Albumin in the Course of Chemically and Thermally Induced Unfolding Using Fluorescence Correlation Spectroscopy. J Phys Chem B 2014; 118:5428-38. [DOI: 10.1021/jp502762t] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rajeev Yadav
- Department
of Chemistry Indian Institute of Technology Kanpur, Kanpur 208 016, UP, India
| | - Bhaswati Sengupta
- Department
of Chemistry Indian Institute of Technology Kanpur, Kanpur 208 016, UP, India
| | - Pratik Sen
- Department
of Chemistry Indian Institute of Technology Kanpur, Kanpur 208 016, UP, India
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14
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Yu X, Liao Z, Yao Q, Liu H, Li X, Yi P. The investigation of the interaction between Tropicamide and bovine serum albumin by spectroscopic methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:331-336. [PMID: 24056312 DOI: 10.1016/j.saa.2013.08.103] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 08/15/2013] [Accepted: 08/23/2013] [Indexed: 06/02/2023]
Abstract
The fluorescence and ultraviolet-visible (UV-Vis) spectroscopy were explored to study the interaction between Tropicamide (TA) and bovine serum albumin (BSA) at three different temperatures (292, 301 and 310K) under imitated physiological conditions. The experimental results showed that the fluorescence quenching mechanism between TA and BSA was static quenching procedure. The binding constant (Ka), binding sites (n) were obtained. The corresponding thermodynamic parameters (ΔH, ΔS and ΔG) of the interaction system were calculated at different temperatures. The results revealed that the binding process is spontaneous, hydrogen binds and vander Waals were the main force to stabilize the complex. According to Förster non-radiation energy transfer theory, the binding distance between TA and BSA was calculated to be 4.90 nm. Synchronous fluorescence spectroscopy indicated the conformation of BSA changed in the presence of TA. Furthermore, the effect of some common metal ions (Mg(2+), Ca(2+), Cu(2+), and Ni(2+)) on the binding constants between TA and BSA were examined.
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Affiliation(s)
- Xianyong Yu
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China.
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15
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Fan J, Sun W, Wang Z, Peng X, Li Y, Cao J. A fluorescent probe for site I binding and sensitive discrimination of HSA from BSA. Chem Commun (Camb) 2014; 50:9573-6. [DOI: 10.1039/c4cc03778b] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A fluorescent HSA probe is designed and successfully utilized to detect trace HSA in healthy human urine.
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Affiliation(s)
- Jiangli Fan
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024, P. R. China
| | - Wen Sun
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024, P. R. China
| | - Zhenkuan Wang
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024, P. R. China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024, P. R. China
| | - Yueqing Li
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024, P. R. China
| | - Jianfang Cao
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024, P. R. China
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16
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Suzuki A, Nemoto N, Saito I, Saito Y. Design of an environmentally sensitive fluorescent 8-aza-7-deaza-2′-deoxyadenosine derivative with dual fluorescence for the specific detection of thymine. Org Biomol Chem 2014; 12:660-6. [DOI: 10.1039/c3ob41757c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Yadav R, Sen P. Mechanistic investigation of domain specific unfolding of human serum albumin and the effect of sucrose. Protein Sci 2013; 22:1571-81. [PMID: 24038622 DOI: 10.1002/pro.2357] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 07/27/2013] [Accepted: 08/16/2013] [Indexed: 11/07/2022]
Abstract
This study is devoted to understand the unfolding mechanism of a multidomain protein, human serum albumin (HSA), in absence and presence of the sucrose by steady-state and time-resolved fluorescence spectroscopy with domain specific marker molecules and is further being substantiated by molecular dynamics (MD) simulation. In water, the domain III of HSA found to unfold first followed by domains I and II as the concentration of GnHCl is increased in the medium. The sequential unfolding behavior of different domains of HSA remains same in presence of sucrose; however, a higher GnHCl concentration is required for unfolding, suggesting stabilizing effect of sucrose on HSA. Domain I is found to be most stabilized by sucrose. The stabilization of domain II is somewhat similar to domain I, but the effect of sucrose on domain III is found to be very small. MD simulation also predicted a similar behavior of sucrose on HSA. The stabilizing effect of sucrose is explained in terms of the entrapment of water molecules in between HSA surface and sucrose layer as well as direct interaction between HSA and sucrose.
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Affiliation(s)
- Rajeev Yadav
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208 016, Uttar Pradesh, India
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Dash N, Mishra A, Krishnamoorthy G. Alkyl chain dependent interactions of ligands with bovine serum albumin. J Pharm Biomed Anal 2013; 77:55-62. [DOI: 10.1016/j.jpba.2013.01.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 12/16/2012] [Accepted: 01/01/2013] [Indexed: 10/27/2022]
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19
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Jana S, Dalapati S, Ghosh S, Guchhait N. Potential charge transfer probe induced conformational changes of model plasma protein human serum albumin: Spectroscopic, molecular docking, and molecular dynamics simulation study. Biopolymers 2012; 97:766-77. [DOI: 10.1002/bip.22057] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Jana S, Dalapati S, Ghosh S, Guchhait N. Study of microheterogeneous environment of protein Human Serum Albumin by an extrinsic fluorescent reporter: A spectroscopic study in combination with Molecular Docking and Molecular Dynamics Simulation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2012; 112:48-58. [DOI: 10.1016/j.jphotobiol.2012.04.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 03/30/2012] [Accepted: 04/06/2012] [Indexed: 10/28/2022]
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21
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Jana S, Dalapati S, Ghosh S, Guchhait N. Binding interaction between plasma protein bovine serum albumin and flexible charge transfer fluorophore: A spectroscopic study in combination with molecular docking and molecular dynamics simulation. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2011.12.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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22
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Ghosh S, Jana S, Guchhait N. Domain Specific Association of Small Fluorescent Probe trans-3-(4-Monomethylaminophenyl)-Acrylonitrile (MMAPA) with Bovine Serum Albumin (BSA) and Its Dissociation from Protein Binding Sites by Ag Nanoparticles: Spectroscopic and Molecular Docking Study. J Phys Chem B 2012; 116:1155-63. [DOI: 10.1021/jp2094752] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shalini Ghosh
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India
| | - Sankar Jana
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India
| | - Nikhil Guchhait
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata-700009, India
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Jana S, Ghosh S, Dalapati S, Guchhait N. Exploring structural change of protein bovine serum albumin by external perturbation using extrinsic fluorescence probe: spectroscopic measurement, molecular docking and molecular dynamics simulation. Photochem Photobiol Sci 2012; 11:323-32. [DOI: 10.1039/c1pp05180f] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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24
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Ghosh S, Jana S, Guchhait N. Constrained photophysics of partially and fully encapsulated charge transfer probe (E)-3-(4-Methylaminophenyl) acrylic acid methyl ester inside cyclodextrin nano-cavities: evidence of cyclodextrins cavity dependent complex stoichiometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 84:249-255. [PMID: 21996591 DOI: 10.1016/j.saa.2011.09.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 09/06/2011] [Accepted: 09/14/2011] [Indexed: 05/31/2023]
Abstract
The polarity sensitive intra-molecular charge transfer (ICT) emission from (E)-3-(4-Methylaminophenyl) acrylic acid methyl ester (MAPAME) is found to show distinct changes once introduced into the nano-cavities of cyclodextrins in aqueous environment. Movement of the molecule from the more polar aqueous environment to the less polar, hydrophobic cyclodextrin interior is marked by the blue shift of the CT emission band with simultaneous fluorescence intensity enhancement. The emission spectral changes on complexation with the α- and β-CD show different stoichiometries as observed from the Benesi-Hildebrand plots. Fluorescence anisotropy and lifetime measurements were performed to probe the different behaviors of MAPAME in aqueous α- and β-CD solutions.
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Affiliation(s)
- Shalini Ghosh
- Department of Chemistry, University of Calcutta, Kolkata, India
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25
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Astray G, Cid A, Manso J, Moldes O, Morales J, Quintás J. Dyes and biomimetic systems: detergency and food industry Colorantes y sistemas biomiméticos: detergencia e industria alimentaria. CYTA - JOURNAL OF FOOD 2011. [DOI: 10.1080/19476337.2011.585718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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26
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Samanta A, Paul BK, Guchhait N. Spectroscopic probe analysis for exploring probe–protein interaction: A mapping of native, unfolding and refolding of protein bovine serum albumin by extrinsic fluorescence probe. Biophys Chem 2011; 156:128-39. [DOI: 10.1016/j.bpc.2011.03.008] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 03/07/2011] [Accepted: 03/24/2011] [Indexed: 10/18/2022]
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27
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Jana S, Dalapati S, Ghosh S, Kar S, Guchhait N. Excited State Charge Transfer reaction with dual emission from 5-(4-dimethylamino-phenyl)-penta-2,4-dienenitrile: Spectral measurement and theoretical density functional theory calculation. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.05.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Site-selective probe for investigating the asynchronous unfolding of domains in bovine serum albumin. Talanta 2011; 84:881-6. [DOI: 10.1016/j.talanta.2011.02.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 02/09/2011] [Accepted: 02/16/2011] [Indexed: 11/20/2022]
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29
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Singh TS, Mitra S. Interaction of cinnamic acid derivatives with serum albumins: a fluorescence spectroscopic study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:942-948. [PMID: 21247795 DOI: 10.1016/j.saa.2010.11.046] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Revised: 11/18/2010] [Accepted: 11/30/2010] [Indexed: 05/30/2023]
Abstract
Cinnamic acid (CA) derivatives are known to possess broad therapeutic applications including anti-tumor activity. The present study was designed to determine the underlying mechanism and thermodynamic parameters for the binding of two CA based intramolecular charge transfer (ICT) fluorescent probes, namely, 4-(dimethylamino) cinnamic acid (DMACA) and trans-ethyl p-(dimethylamino) cinnamate (EDAC), with albumins by fluorescence spectroscopy. Stern-Volmer analysis of the tryptophan fluorescence quenching data in presence of the added ligand reveals fluorescence quenching constant (κ(q)), Stern-Volmer constant (K(SV)) and also the ligand-protein association constant (K(a)). The thermodynamic parameters like enthalpy (ΔH) and entropy (ΔS) change corresponding to the ligand binding process were also estimated. The results show that the ligands bind into the sub-domain IIA of the proteins in 1:1 stoichiometry with an apparent binding constant value in the range of 10(4) dm(3) mol(-1). In both the cases, the spontaneous ligand binding to the proteins occur through entropy driven mechanism, although the interaction of DMACA is relatively stronger in comparison with EDAC. The temperature dependence of the binding constant indicates the induced change in protein secondary structure.
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Affiliation(s)
- T Sanjoy Singh
- Department of Chemistry, North-Eastern Hill University, Shillong, India
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30
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Fluorescent Probing of Protein Bovine Serum Albumin Stability and Denaturation Using Polarity Sensitive Spectral Response of a Charge Transfer Probe. J Fluoresc 2010; 21:365-74. [DOI: 10.1007/s10895-010-0725-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Accepted: 09/08/2010] [Indexed: 10/19/2022]
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31
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Chen J, Zeng F, Wu S. Construction of Energy Transfer Systems within Nanosized Polymer Micelles and their Fluorescence Modulation Properties. Chemphyschem 2010; 11:1036-43. [DOI: 10.1002/cphc.200900999] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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