1
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Hu G, Yue D, Chen W, Lin Q, Lyu H. Dual-mode upconversion sensors for detecting differently charged biotargets based on the oxidase-mimicking activity of Ce 4+ and electrostatic control. Talanta 2024; 277:126392. [PMID: 38865959 DOI: 10.1016/j.talanta.2024.126392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 05/21/2024] [Accepted: 06/06/2024] [Indexed: 06/14/2024]
Abstract
Heparin is a highly negatively charged sulfated linear polymer glycosaminoglycan that has been widely used as an anticoagulant in medicine. Protamine is a cationic protein rich in arginine that is used to treat the blood-brain barrier during excess heparin surgery. Trypsin is the most important digestive enzyme-encoding generated by the pancreas and can specifically cleave the carboxyl ends of arginine and lysine residues. Heparin, protamine, and trypsin interact and constrain each other, and their fluctuations reflect the body's dysfunction. Therefore, it is necessary to develop a fast, sensitive, and highly selective assay for regularly monitoring the levels of heparin, protamine, and trypsin in serum. Herein, a fluorescent and colorimetric dual-mode upconversion nanoparticle (UCNP) biosensor was used for the determination of heparin, protamine, and trypsin based on the oxidase-mimicking activity of Ce4+ and electrostatic control. The biosensor exhibited sensitive detection of heparin, protamine, and trypsin with low limits of detection (LODs) of 16 ng/mL, 87 ng/mL and 31 ng/mL, respectively. Furthermore, the designed biosensor could eliminate autofluorescence, which not only effectively increased the accuracy of the sensor but also provided a new sensing pathway for the detection of differently charged biotargets.
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Affiliation(s)
- Gaoya Hu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Daoping Yue
- Ningde City Hospital, Ningde Normal University, Ningde, 352100, China
| | - Weishuan Chen
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Qingqing Lin
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Haixia Lyu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China.
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2
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Xu H, Fu XY, Bao YX, Zhu SY, Xu Z, Song M, Qi YK, Li Z, Du SS. d-type peptides based fluorescent probes for "turn on" sensing of heparin. Bioorg Chem 2024; 147:107356. [PMID: 38604021 DOI: 10.1016/j.bioorg.2024.107356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/26/2024] [Accepted: 04/06/2024] [Indexed: 04/13/2024]
Abstract
Developing "turn on" fluorescent probes was desirable for the detection of the effective anticoagulant agent heparin in clinical applications. Through combining the aggregation induced emission (AIE) fluorogen tetraphenylethene (TPE) and heparin specific binding peptide AG73, the promising "turn on" fluorescent probe TPE-1 has been developed. Nevertheless, although TPE-1 could achieve the sensitive and selective detection of heparin, the low proteolytic stability and undesirable poor solubility may limit its widespread applications. In this study, seven TPE-1 derived fluorescent probes were rationally designed, efficiently synthesized and evaluated. The stability and water solubility were systematically estimated. Especially, to achieve real-time monitoring of proteolytic stability, the novel Abz/Dnp-based "turn on" probes that employ the internally quenched fluorescent (IQF) mechanism were designed and synthesized. Moreover, the detection ability of synthetic fluorescent probes for heparin were systematically evaluated. Importantly, the performance of d-type peptide fluorescent probe XH-6 indicated that d-type amino acid substitutions could significantly improve the proteolytic stability without compromising its ability of heparin sensing, and attaching solubilizing tag 2-(2-aminoethoxy) ethoxy) acid (AEEA) could greatly enhance the solubility. Collectively, this study not only established practical strategies to improve both the water solubility and proteolytic stability of "turn on" fluorescent probes for heparin sensing, but also provided valuable references for the subsequent development of enzymatic hydrolysis-resistant d-type peptides based fluorescent probes.
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Affiliation(s)
- Huan Xu
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xing-Yan Fu
- School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao 266073, China; Institute of Innovative Drugs, Qingdao University, Qingdao 266021, China
| | - Yong-Xin Bao
- Department of Anesthesiology, Qingdao Women and Children's Hospital, Qingdao University, Qingdao, Shandong 266034, China
| | - Shu-Ya Zhu
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zi Xu
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Min Song
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yun-Kun Qi
- School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao 266073, China; Institute of Innovative Drugs, Qingdao University, Qingdao 266021, China.
| | - Zhibo Li
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Shan-Shan Du
- State Key Laboratory Base for Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; School of Pharmacy, Qingdao University Medical College, Qingdao University, Qingdao 266073, China; Institute of Innovative Drugs, Qingdao University, Qingdao 266021, China.
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3
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Liu Y, Zhang Y, Liu C, Wang C, Xu B, Zhao L. Construction of a highly sensitive detection platform for heparin based on a "turn-off" cationic fluorescent dye. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123670. [PMID: 38006866 DOI: 10.1016/j.saa.2023.123670] [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: 09/01/2023] [Revised: 11/10/2023] [Accepted: 11/19/2023] [Indexed: 11/27/2023]
Abstract
A highly sensitive detection platform for heparin was constructed via the utilization of a commercially available cationic fluorescent dye (cresyl violet acetate, CV) as a fluorescence probe. The electrostatic binding between CV and heparin quenched the fluorescence in 4-(2-hydroxyethyl)-1-piperazineethanesulfonic (HEPES) buffer solution (10 mM, pH 7.1). CV was highly selective towards heparin over other potential inferring substances. The detection limit of heparin detection was 5.19 ng/mL, and the linear working range was 0 ∼ 1 μg/mL in HEPES solution. In 1 % serum, the detection platform based on the fluorescence "turn-off" behavior of CV was also successfully constructed with a detection limit of 5.86 ng/mL in the linear range of 0 ∼ 0.8 μg/mL. Moreover, the CV-heparin complex was considered a potential sensor platform for the detection of protamine because of its stronger affinity for heparin and protamine.
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Affiliation(s)
- Yu Liu
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Yue Zhang
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Changyao Liu
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Ce Wang
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Baocai Xu
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China.
| | - Li Zhao
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China.
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4
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Pandey SP, Singh PK, Jha P, Jobby R. A turn-on fluorescence sensor for detection of heparinase with heparin templated aggregation of tetracationic porphyrin derivative. Int J Biol Macromol 2023; 249:125934. [PMID: 37482160 DOI: 10.1016/j.ijbiomac.2023.125934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/03/2023] [Accepted: 07/20/2023] [Indexed: 07/25/2023]
Abstract
Heparinase is the only mammalian endoglycosidase that breaks down the commonly used blood-anticoagulant heparin into therapeutically relevant low-molecular-weight-heparin. Importantly, heparinase has been considered a malignant disease diagnostic marker. Thus, it is essential to develop detection scheme for heparinase. However, optical methods for heparinase determination are limited. In the present work, we report a turn-on fluorescence sensor for detection of heparinase that utilizes heparin-templated aggregation of a tetra-cationic porphyrin derivative, TMPyP4+, as a sensing framework. Heparinase cleaves the glycosidic linkage between hexosamine and uronic acid in the structure of heparin to destroy its polyelectrolytic nature that originally causes the aggregation of TMPyP4+. Thus, heparinase leads to dissociation of TMPyP4+ aggregates and generates an optical signal. This system leads to a sensitive and selective response towards heparinase with a Limit of Detection (LOD) of 0.3 pmol/L. Further, the same system is demonstrated to sense a trace amount of Oversulfated Chondrootin Sulphate (OSCS) in heparin, which is a heparin adulterant, by utilizing the fact that OSCS serves as an inhibitor for heparinase activity, which leads to reverse modulation in the photo-physical features of the monomer/aggregate equilibrium of the TMPyP4+-heparin-heparinase system. The sensing mechanism has been thoroughly demonstrated by ground-state absorption, steady-state emission, and time-resolved emission measurements. The selectivity of the sensor was tested using lysozyme, α-amylase, pepsin, trypsin, lipase, and glucose oxidase in the heparinase selectivity study and the method is also validated using another method reported in the literature. The study provides a new approach for the development of optical methods for the detection of heparinase and oversulfated chondroitin sulfate, which is currently limited.
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Affiliation(s)
- Shrishti P Pandey
- Amity Institute of Biotechnology, Amity University Maharashtra - Mumbai - Pune Expressway, Bhatan, Panvel, Maharashtra 410206, India
| | - Prabhat K Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai 400085, India.
| | - Pamela Jha
- Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS Deemed to be University, Vile Parle (West), Mumbai 400056, India
| | - Renitta Jobby
- Amity Institute of Biotechnology, Amity University Maharashtra - Mumbai - Pune Expressway, Bhatan, Panvel, Maharashtra 410206, India; Amity Centre of Excellence in Astrobiology, Amity University Maharashtra - Pune Expressway, Bhatan, Panvel, Mumbai, Maharashtra 410206, India.
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5
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Mirzahossein E, Grzelka M, Guerton F, Bonn D, Brown R. Adsorption of a water-soluble molecular rotor fluorescent probe on hydrophobic surfaces. Sci Rep 2022; 12:22197. [PMID: 36564458 PMCID: PMC9789158 DOI: 10.1038/s41598-022-26722-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Environmentally sensitive molecular rotors are widely used to probe the local molecular environment in e.g. polymer solutions, polymer glasses, and biological systems. These applications make it important to understand its fluorescence properties in the vicinity of a solid surface, since fluorescence microscopy generically employs cover slides, and measurements are often done in its immediate vicinity. Here, we use a confocal microscope to investigate the fluorescence of (4-DASPI) in glycerol/water solutions close to the interface using hydrophilic or hydrophobic cover slips. Despite the dye's high solubility in water, the observed lengthening of the fluorescence lifetime close to the hydrophobic surface, implies a surprising affinity of the dye with the surface. Because the homogeneous solution and the refractive index mismatch reduces the optical sectioning power of the microscope, we quantify the affinity with the help of a simple model of the signal vs. depth of focus, exhibiting surface and bulk contributions. The model reduces artefacts due to refractive index mismatch, as supported by Monte Carlo ray tracing simulations.
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Affiliation(s)
- Elham Mirzahossein
- grid.7177.60000000084992262Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam, 1098XH Amsterdam, The Netherlands
| | - Marion Grzelka
- grid.7177.60000000084992262Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam, 1098XH Amsterdam, The Netherlands
| | - Fabrice Guerton
- grid.5571.60000 0001 2289 818XUniversité de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPRA, Pau, France
| | - Daniel Bonn
- grid.7177.60000000084992262Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam, 1098XH Amsterdam, The Netherlands
| | - Ross Brown
- grid.462187.e0000 0004 0382 657XUniversité de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPREM, Pau, France
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Pandey SP, Desai AM, Singh PK. A molecular rotor based ratiometric detection scheme for aluminium ions in water. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Singh G, Singh VR, Pandey SP, Singh PK. Sulfated-β-cyclodextrin templated aggregation of a metachromatic dye, Basic Orange 21: A photophysical investigation. Supramol Chem 2022. [DOI: 10.1080/10610278.2022.2046277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Gaurav Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
- Um-dae Centre for Excellence in Basic Sciences, University of Mumbai, Mumbai, India
| | - Vidya R. Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Shrishti P. Pandey
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
- Amity Institute of Biotechnology, Amity University, Mumbai-Pune Expressway, Mumbai, INDIA
| | - Prabhat K. Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Training School Complex, Mumbai, India
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Pandey SP, Awasthi AA, Singh PK. Supramolecular tuning of thioflavin-T aggregation hosted by polystyrene sulfonate. Phys Chem Chem Phys 2021; 23:14716-14724. [PMID: 34190258 DOI: 10.1039/d1cp02030g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tunable and controllable emission is an extremely desirable feature for advanced functional materials that finds usage in optoelectronic utilization, fluorescence probing/sensing, drug-delivery monitoring, etc. In the present contribution, we have employed a macrocyclic host molecule, sulfobutyl ether-β-cyclodextrin (SBE-β-CD), as a tuning agent for an intensely emissive aggregate assembly of a molecular rotor dye, thioflavin-T (ThT), in the presence of an anionic polyelectrolyte, polystyrene sulfonate (PSS). The macrocyclic host breaks the PSS templated ThT aggregates and leads to encapsulation of released ThT molecules, tailoring the emission response of the system in terms of intensity and wavelength. Utilizing the established selectivity of the cyclodextrin-adamantane system, reverse control of this tunable emission has been further achieved. The controllable fluorescence system has been extensively investigated using ground-state absorption, steady-state and time-resolved emission spectroscopy. This kind of supramolecular tailoring of self-assembled aggregate emission has enormous potential in the field of fluorescence sensors and probes, and imaging and tracking in biological systems.
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Affiliation(s)
- Shrishti P Pandey
- Amity Institute of Biotechnology, Amity University, Mumbai-Pune Expressway, Bhatan, Panvel, Mumbai, 410206, India and Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - Ankur A Awasthi
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - Prabhat K Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. and Homi Bhabha National Institute, Anushaktinagar, Mumbai-400085, India
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9
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Singh G, Pandey SP, Singh PK. Anionic Polyelectrolyte-Induced Aggregation of Basic Orange 21: A Clue toward Metachromasia. J Phys Chem B 2021; 125:7033-7043. [PMID: 34137609 DOI: 10.1021/acs.jpcb.1c02127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The change in the color of chromophore upon being embedded in a biological tissue is known as metachromasia. Basic Orange 21 (BO21) is a cationic polymethine dye that has been implied as a supravital dye, which produces metachromasia in leukocytes. An improved differential counting of leukocytes has been achieved in the clinical setup based on characteristic metachromatic expressions of BO21 for different types of leukocytes. Although BO21 has been utilized as a chromatic indicator for leukocyte counting, there are limited number of investigations that focus on the factors that may be responsible for the spectral shift in absorption and emission spectra of BO21, which leads to its metachromatic behavior. In this work, we have investigated the effect of a synthetic anionic polyelectrolyte, polystyrene sulfonate (PSS), on the photophysical properties of BO21, using steady-state emission, ground-state absorption, and time-resolved emission measurements, to get an understanding of the factors that may be responsible for the spectral shift of BO21 in the cellular environment. PSS induces aggregation of BO21 molecules with large changes in its photophysical properties; this appears to be most likely the mechanism of spectral shift for BO21 reported in the cellular environment. The employment of external stimulus reveals BO21 aggregates to be significantly responsive toward external stimuli, for example, temperature and presence of salt in the medium, which further strengthens the proposal of aggregate formation. Further, we have also employed fluorescence upconversion spectroscopy with subpicosecond time resolution to estimate the excited-state lifetime of BO21.
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Affiliation(s)
- Gaurav Singh
- UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina, Santacruz (E), Mumbai 400098, India
| | - Shrishti P Pandey
- Amity Institute of Biotechnology, Amity University, Mumbai-Pune Expressway, Bhatan, Panvel, Mumbai 410206, India.,Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Prabhat K Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
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Awasthi AA, Pandey SP, Singh PK. Supramolecular Control on the Optical Properties of a Dye-Polyelectrolyte Assembly. Chemphyschem 2021; 22:975-984. [PMID: 33759328 DOI: 10.1002/cphc.202100092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/17/2021] [Indexed: 12/16/2022]
Abstract
Control of fluorescent molecular assemblies is an exciting area of research with large potential for various important applications, such as, fluorescence sensing/probing, cell imaging and monitoring drug-delivery. In the present contribution, we have demonstrated control on the extent of aggregation of a dye-polyelectrolyte assembly using a macrocyclic host molecule, sulfobutylether-β-cyclodextrin (SBE-β-CD). Initially, a cationic molecular rotor based organic dye, Auramine-O (AuO), undergoes aggregation in the presence of an anionic polyelectrolyte, polystyrene sulfonate (PSS), and displays a broad intense new emission band along with large variation in its absorption features and excited-state lifetime. A manipulation of the monomer-aggregate equilibrium of the dye-polyelectrolyte assembly has been achieved by introducing a cyclodextrin based supramolecular host, SBE-β-CD, which leads to relocation of AuO molecules from polyelectrolyte (PSS) to supramolecular host cavity, owing to the formation of a host-guest complex between AuO and SBE-β-CD. A reversible control on this manipulation of monomer-aggregate equilibrium is further achieved by introducing a competitive guest for the host cavity i. e., 1-Adamantanol. Thus, we have demonstrated an interesting control on the dye-polyelectrolyte aggregate assembly using a supramolecular host molecule which open up exciting possibilities to construct responsive materials using a repertoire of various host-specific guest molecules.
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Affiliation(s)
- Ankur A Awasthi
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400 085, India
| | - Shrishti P Pandey
- Amity Institute of Biotechnology, Amity University, Mumbai-Pune Expressway, Bhatan, Panvel, Mumbai, 410206, India
| | - Prabhat K Singh
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400 085, India.,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai-400 094, India
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