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Sinha A, Chaudhary R, Reddy DS, Kongot M, Kurjogi MM, Kumar A. ON donor tethered copper (II) and vanadium (V) complexes as efficacious anti-TB and anti-fungal agents with spectroscopic approached HSA interactions. Heliyon 2022; 8:e10125. [PMID: 36033266 PMCID: PMC9403362 DOI: 10.1016/j.heliyon.2022.e10125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/12/2022] [Accepted: 07/27/2022] [Indexed: 11/17/2022] Open
Abstract
Antimicrobial drug resistance poses a significant threat worldwide, hence triggering an urgent situation for developing feasible drugs. 3D-transition metal coordination complexes being multifaceted, offer tremendous potency as drug candidates. However, there are fewer reports on non-toxic and safe transition metal complexes; therefore, we hereby attempted to develop novel copper and vanadium-based therapeutic agents. We have synthesised six metal complexes viz., [VVO2(Quibal-INH)] (1), [CuII(Quibal-INH)2] (2), [VVO(Quibal-INH) (cat)] (3), [CuII(Quibal-INH) (cat)] (4), [VVO(Quibal-INH) (bha)] (5) and [CuII(Quibal-INH) (bha)] (6). Quibal-INH (L) is an ON bidentate donor ligand synthesized from Schiff base reaction between 4-(2-(7-chloroquinolin-3-yl)vinyl)benzaldehyde (Quibal) and Isoniazid (INH). The synthesized compounds were characterized using analytical techniques involving ATR-IR, UV-Vis, EPR, 1H NMR, 13C NMR, and 51V NMR. Ligand (L) and compound 3 exhibited moderate growth inhibitory activity towards Candida albicans and Cryptococcus neoformans fungal species. Compound 6 has been identified as active against the above fungal species with no toxicity and hemolysis activity on the healthy cells. Compound 5 exhibited significant activity against the Mycobacterium tuberculosis H 37 R v strain. Further, compounds 4, 5 and 6 exhibited excellent free radical scavenging activity. All the developed compounds were found to exhibit stability over a wide range of pH conditions. The complexes were additionally studied for their interaction with human serum albumin (HSA) with the UV-vis spectroscopic technique.
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Affiliation(s)
- Anamika Sinha
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Riya Chaudhary
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Dinesh S Reddy
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Manasa Kongot
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Mahantesh M Kurjogi
- Multi-Disciplinary Research Unit, Karnataka Institute of Medical Sciences, Hubli, India
| | - Amit Kumar
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru, 562112, Karnataka, India
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Kongot M, Reddy DS, Singh V, Patel R, Singhal NK, Kumar A. Physicochemical, in-vitro therapeutic activity and biomolecular interaction studies of Mn(II), Ni(II) and Cu(II) complexes tethered with O 2N 2 ligand backbone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 241:118613. [PMID: 32610216 DOI: 10.1016/j.saa.2020.118613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/12/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Two major health crisis of today's world are antimicrobial drug resistance and type II diabetes. To tackle them, there is an immediate requirement for the development of new and safer drugs and the present work is one such quest for novel and efficient drug candidates. We have developed three trace metal coordination compounds tethered with a reduced salen ligand {H2(hpdbal)2-an} (L), namely, a manganese-salan complex, [MnII(H2O)2{(hpdbal)2-an}] (1), a nickel-salan complex, [NiII{(hpdbal)2-an}] (2) and a copper-salan complex, [CuII{(hpdbal)2-an}] (3). The compounds were characterized by elemental analysis, vibrational spectroscopy, electronic spectroscopy, thermogravimetric analysis, nuclear magnetic resonance and electron-paramagnetic resonance techniques. The compounds were evaluated for antimicrobial activity against seven pathogens (Escherichia coli, Klebsiella pneumonia, Acinetobacter baumannii, Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans and Cryptococcus neoformans) and antidiabetic activity by mimicking diabetic environment on the immortal human liver cancer cells, HepG2. Complexes 1 and 2 were additionally tested for their reactivity and stability in biological media mimic conditions. The nickel(II) salan complex (2) exhibited noteworthy antifungal activity against Candida albicans and the manganese(II) salan complex (1) induced increased glucose uptake by the insulin resistant cells. Both compounds were found to be stable when solution pH conditions were varied from 3 to 9. They exhibited strong affinity of binding towards a carrier protein, bovine serum albumin which was evaluated with the aid of multi-spectroscopic techniques.
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Affiliation(s)
- Manasa Kongot
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru 562112, Karnataka, India
| | - Dinesh S Reddy
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru 562112, Karnataka, India
| | - Vishal Singh
- National Agri Food Biotechnology Institute, Mohali 140306, India
| | - Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi 110025, India
| | | | - Amit Kumar
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru 562112, Karnataka, India.
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Reddy DS, Kongot M, Singh V, Siddiquee MA, Patel R, Singhal NK, Avecilla F, Kumar A. Biscoumarin-pyrimidine conjugates as potent anticancer agents and binding mechanism of hit candidate with human serum albumin. Arch Pharm (Weinheim) 2020; 354:e2000181. [PMID: 32945576 DOI: 10.1002/ardp.202000181] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/03/2020] [Accepted: 08/31/2020] [Indexed: 12/16/2022]
Abstract
In our continuing efforts to develop therapeutically active coumarin-based compounds, a series of new C4-C4' biscoumarin-pyrimidine conjugates (1a-l) was synthesized via SN 2 reaction of substituted 4-bromomethyl coumarin with thymine. All compounds were characterized using spectroscopic techniques, that is, attenuated total reflection infrared (ATR-IR), CHN elemental analysis, and 1 H and 13 C NMR (nuclear magnetic resonance). In addition, the structure of compound 1d (1,3-bis[(7-chloro-2-oxo-2H-chromen-4-yl)methyl]-5-methylpyrimidine-2,4(1H,3H)-dione) was established through X-ray crystallography. Compounds 1a-l were screened for in vitro anticancer activity against C6 rat glioma cells. Among the screened compounds, 1,3-bis[(6-chloro-2-oxo-2H-chromen-4-yl)methyl]-5-methylpyrimidine-2,4(1H,3H)-dione (1c) was identified as the best antiproliferative candidate, exhibiting an IC50 value of 4.85 μM. All the compounds (1a-l) were found to be nontoxic toward healthy human embryonic kidney cells (HEK293), indicating their selective nature. In addition, the most active compound (1c) displayed strong binding interactions with the drug carrier protein, human serum albumin, and exhibited good solution stability at biological pH conditions. Fluorescence, UV-visible spectrophotometry and molecular modeling methodologies were employed for studying the interaction mechanism of compound 1c with protein.
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Affiliation(s)
- Dinesh S Reddy
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, India
| | - Manasa Kongot
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, India
| | - Vishal Singh
- National Agri Food Biotechnology Institute, Mohali, India
| | - Md Abrar Siddiquee
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | - Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, India
| | | | - Fernando Avecilla
- Departamento de Química, Facultade de Ciencias, Grupo Xenomar, Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña, A Coruña, Spain
| | - Amit Kumar
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore, India
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Kongot M, Reddy DS, Singh V, Patel R, Singhal NK, Kumar A. A manganese (II) complex tethered with S-benzyldithiocarbazate Schiff base: Synthesis, characterization, in-vitro therapeutic activity and protein interaction studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 231:118123. [PMID: 32058916 DOI: 10.1016/j.saa.2020.118123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 01/31/2020] [Accepted: 02/01/2020] [Indexed: 06/10/2023]
Abstract
There is an urgent need to eliminate the era of superbugs through design and development of novel and sustainable drugs. Transition metal complexes can be one of the hopes for tackling drug resistant pathogens. In this view, we have developed a manganese complex appended with an ON donor ligand which has shown excellent activity against one of the prominent fungal species. The Mn (II) complex, [MnII(OH2)2(Hhpdbal-sbdt)2] (1) was synthesized using a Schiff base ligand derived from an azo aldehyde and S-benzyldithiocarbazate. The complex was characterized with the help of analytical techniques such as elemental analysis, FT-IR, EDAX, EPR and TGA. The solution behavior in physiological conditions and in biological media was preliminarily evaluated by studying the behavior of complex in varied pH conditions and in the presence of protein, BSA. The effect of the compound on few drug resistant pathogenic species of bacteria and fungi and on the uptake of glucose by insulin resistant cells was evaluated using whole cell inhibition assay and NBDG assay respectively. The study gave a noteworthy result with respect to the manganese compound's biological activity, with an inhibitory activity of 93% towards a fungi species, Cryptococcus neoformans and with a relatively good glucose uptake inducing capacity. The manganese complex, which maintains its stability over a wide range of pH conditions and interacts with serum protein, BSA in a facile manner can be an excellent drug candidate and eventually be added to the library of compounds being screened for in vivo activity studies.
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Affiliation(s)
- Manasa Kongot
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru 562112, Karnataka, India
| | - Dinesh S Reddy
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru 562112, Karnataka, India
| | - Vishal Singh
- National Agri Food Biotechnology Institute, Mohali 140306, India
| | - Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi 110025, India
| | | | - Amit Kumar
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru 562112, Karnataka, India.
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Kongot M, Reddy DS, Singh V, Patel R, Singhal NK, Kumar A. Oxidovanadium (IV) and iron (III) complexes with O
2
N
2
donor linkage as plausible antidiabetic candidates: Synthesis, structural characterizations, glucose uptake and model biological media studies. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5327] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Manasa Kongot
- Centre for Nano and Material SciencesJain University Jain Global Campus Bengaluru 562112 Karnataka India
| | - Dinesh S. Reddy
- Centre for Nano and Material SciencesJain University Jain Global Campus Bengaluru 562112 Karnataka India
| | - Vishal Singh
- National Agri Food Biotechnology Institute Mohali 140306 India
| | - Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic SciencesJamia Millia Islamia (A Central University) New Delhi 110025 India
| | | | - Amit Kumar
- Centre for Nano and Material SciencesJain University Jain Global Campus Bengaluru 562112 Karnataka India
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6
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Coumarin tethered cyclic imides as efficacious glucose uptake agents and investigation of hit candidate to probe its binding mechanism with human serum albumin. Bioorg Chem 2019; 92:103212. [PMID: 31465968 DOI: 10.1016/j.bioorg.2019.103212] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/06/2019] [Accepted: 08/20/2019] [Indexed: 12/30/2022]
Abstract
A series of novel coumarin-cyclic imide conjugates (1a-1j) were designed and synthesized to evaluate their glucose uptake activity by insulin resistant liver hepatocyte carcinoma (HepG2) cells through 2-NBDG uptake assay. Compounds (1a-1j) were characterised using various analytical methods such as 1H NMR, 13C NMR, IR, GC-MS, elemental and single-crystal X-ray diffraction techniques. Compounds (1a-1j) exhibited 85.21 - 65.80% of glucose uptake and showed low level of cytotoxicity towards human embryonic kidney cells (HEK-293) indicating good selectivity and safety profile. Compound 1f was identified as a hit candidate exhibiting 85.21% of glucose uptake which was comparable with standard antidiabetic drug Metformin (93.25% glucose uptake). Solution stability study under physiological pH conditions ≈ (3.4 - 8.7), indicates that compound 1f is sufficiently stable at varied pH conditions and thereby compatible with bio-physiological environments. Interaction of 1f with human serum albumin (HSA) were also studied which quantifies that compound 1f binds with HSA efficiently through facile binding reaction in solution. Fluorescence, UV-vis spectrophotometry and molecular modeling methodologies were employed for studying the interaction mechanism of compound 1f with protein.
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Kongot M, Reddy D, Singh V, Patel R, Singhal NK, Kumar A. Potent drug candidature of an ONS donor tethered copper (II) complex: Anticancer activity, cytotoxicity and spectroscopically approached BSA binding studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 212:330-342. [PMID: 30669096 DOI: 10.1016/j.saa.2019.01.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 01/11/2019] [Accepted: 01/13/2019] [Indexed: 06/09/2023]
Abstract
In our continued efforts to develop metal based therapeutic agents, we have synthesized a novel copper(II) complex, [{Cu(hpdbal-sbdt)}2] (2) tethered with a biocompatible ONS2- donor backbone [H2hpdbal-sbdt] (1) [H2hpdbal-sbdt is a tridentate ligand derived from S-benzyldithiocarbazate (Hsbdt) and 2-hydroxy-5-(phenyldiazenyl)benzaldehyde (Hhpdbal)]. The metal complex (2) was characterized using attenuated total reflection-infrared (ATR-IR) spectroscopy, electron paramagnetic resonance (EPR) spectroscopy, thermogravimetry and differential scanning calorimetric (TG-DSC) analysis, field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS) and elemental (CHNS) analysis. The antineoplastic ability of copper complex was evaluated in vitro against human cervical cancer (HeLa) cells. MTT assay results showed that the copper complex exhibited significant growth inhibition of HeLa cells with an IC50 value of 4.46 μM and this value was compared with reported standards. Cytotoxicity of the copper complex towards human embryonic kidney cells (HEK-293) was also evaluated. The potentially active copper complex was studied for its solution state stability at a pH range of 3-9. Following this, the interactive behaviour of the bioactive copper complex with a drug transporter protein (BSA) was deciphered through multi-spectrosopic investigations like steady-state fluorescence, three-dimensional fluorescence, deconvoluted-IR and UV-Visible techniques.
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Affiliation(s)
- Manasa Kongot
- Centre for Nano and Material Sciences, JAIN (Deemed-to-be University), Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Dinesh Reddy
- Centre for Nano and Material Sciences, JAIN (Deemed-to-be University), Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Vishal Singh
- National Agri Food Biotechnology Institute, Mohali 140306, India
| | - Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi 110025, India
| | | | - Amit Kumar
- Centre for Nano and Material Sciences, JAIN (Deemed-to-be University), Jain Global Campus, Bengaluru, 562112, Karnataka, India.
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Kongot M, Reddy DS, Singh V, Patel R, Singhal NK, Kumar A. ONS donor entwined iron(iii) and cobalt(iii) complexes with exemplary safety profile as potent anticancer and glucose uptake agents. NEW J CHEM 2019. [DOI: 10.1039/c9nj00883g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly safe, efficacious iron(iii) and cobalt(iii) complexes are found to be effective in vitro anticancer and antidiabetic agents.
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Affiliation(s)
- Manasa Kongot
- Centre for Nano and Material Sciences
- JAIN (Deemed-to-be University)
- Jain Global Campus
- Bengaluru
- India
| | - Dinesh S. Reddy
- Centre for Nano and Material Sciences
- JAIN (Deemed-to-be University)
- Jain Global Campus
- Bengaluru
- India
| | - Vishal Singh
- National Agri Food Biotechnology Institute
- Mohali
- India
| | - Rajan Patel
- Biophysical Chemistry Laboratory
- Centre for Interdisciplinary Research in Basic Sciences
- Jamia Millia Islamia (A Central University)
- New Delhi-110025
- India
| | | | - Amit Kumar
- Centre for Nano and Material Sciences
- JAIN (Deemed-to-be University)
- Jain Global Campus
- Bengaluru
- India
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Kongot M, Dohare N, Reddy DS, Pereira N, Patel R, Subramanian M, Kumar A. In vitro apoptosis-induction, antiproliferative and BSA binding studies of a oxidovanadium(V) complex. J Trace Elem Med Biol 2019; 51:176-190. [PMID: 30466929 DOI: 10.1016/j.jtemb.2018.10.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 10/06/2018] [Accepted: 10/19/2018] [Indexed: 12/15/2022]
Abstract
In our ongoing efforts to develop novel trace metal complexes with therapeutically interesting properties, a neutral mono nuclear oxidomethoxidovanadium(V) complex, [VVO(OCH3)(hpdbal-sbdt)] (1) and a μ-O bridged dinuclear oxidovanadium(V) complex, [{VVO(hpdbal-sbdt)}2μ-O] (2) [H2hpdbal-sbdt (I) is a tridentate and dibasic ONS2- donor ligand obtained through the Schiff base reaction of 2-hydroxy-5-(phenyldiazenyl)benzaldehyde (Hhpdbal) and S-benzyldithiocarbazate (Hsbdt)] have been synthesized and characterized by various analytical techniques such as TGA, EDS, ATR-IR, UV-Vis, CV, 1H NMR, 13C NMR and 51V NMR. Single-crystal X-ray diffraction analysis of 1 confirms the coordination of phenolate oxygen, imine nitrogen and thioenolate sulfur of the ligand to the vanadium center with a distorted tetragonal-pyramidal geometry. The compound 2 triggered apoptotic and reproductive death of the cancer cells in vitro with 76% and 62% growth inhibition of human breast adenocarcinoma (MCF-7) and human lung carcinoma cells (A549) respectively. The compound 2 was found to be sufficiently stable over a wide window of physiological pH. The complex 2 was studied further for its interaction with a drug carrier protein BSA with the aid of spectroscopic techniques viz. fluorescence, temperature controlled UV-vis and deconvoluted IR techniques.
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Affiliation(s)
- Manasa Kongot
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Jakkasandra Post, Bengaluru, 562112, Karnataka, India
| | - Neeraj Dohare
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, 110025, India; Department of Biochemistry, Daulat Ram College, University of Delhi, New Delhi, 110007, India
| | - Dinesh S Reddy
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Jakkasandra Post, Bengaluru, 562112, Karnataka, India
| | - Neha Pereira
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India
| | - Rajan Patel
- Biophysical Chemistry Laboratory, Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi, 110025, India
| | - Mahesh Subramanian
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India
| | - Amit Kumar
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Jakkasandra Post, Bengaluru, 562112, Karnataka, India.
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