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Alamier WM, Alaghaz ANMA. Design, spectral characterization, quantum chemical investigation, biological activity of nano-sized transition metal complexes of tridentate 3-mercapto-4H-1,2,4-triazol-4-yl-aminomethylphenol Schiff base ligand. J Biomol Struct Dyn 2023:1-21. [PMID: 38133937 DOI: 10.1080/07391102.2023.2294171] [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: 08/25/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023]
Abstract
A tridentate Schiff base ligand, H2MTIP, was produced by condensing salicylaldehyde with 4-amino-4H-1,2,4-triazole-3-thiol. The ligand was then used to create nanosized complexes of Pt(II), Ni(II), Cu(II), and Pd(II). The complexes have the composition [Pt/Ni/Cu/or Pd(MTIP)(H2O)], this conclusion is supported by molar conductance, magnetic moments, elemental analyses, spectral analyses. In DFT analysis, the 6-31+ g(d,p) basis set was used to fully optimize the energy with respect to the shapes of Schiff base ligand and metal complexes. Pt(II), Ni(II), Cu(II), and Pd(II) complexes have been assigned square-planar geometries. At the same time, the intense diffraction peaks in X-ray diffractograms show their crystalline features with particle sizes in the nanoscale range. The binding interaction of calf thymus DNA with these metal complexes and their insulin-like activity was examined in vitro by inhibiting α-amylase. The study investigated the in-vitro activity of several complexes and identified Pt(II) complex as the one with the highest activity. The researchers then tested this complex for in-vivo antidiabetic activity in induced diabetic rats using the STZ model, and it significantly lowered blood glucose levels. The antioxidant activity and toxicity level of Pt(II) complex were also excellent, suggesting that it could be a good candidate for further research as a possible diabetes drug.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Waleed M Alamier
- Department of Chemistry, College of Science, Jazan University, Jazan, Kingdom of Saudi Arabia
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Feng X, Wang X, Redshaw C, Tang BZ. Aggregation behaviour of pyrene-based luminescent materials, from molecular design and optical properties to application. Chem Soc Rev 2023; 52:6715-6753. [PMID: 37694728 DOI: 10.1039/d3cs00251a] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Molecular aggregates are self-assembled from multiple molecules via weak intermolecular interactions, and new chemical and physical properties can emerge compared to their individual molecule. With the development of aggregate science, much research has focused on the study of the luminescence behaviour of aggregates rather than single molecules. Pyrene as a classical fluorophore has attracted great attention due to its diverse luminescence behavior depending on the solution state, molecular packing pattern as well as morphology, resulting in wide potential applications. For example, pyrene prefers to emit monomer emission in dilute solution but tends to form a dimer via π-π stacking in the aggregation state, resulting in red-shifted emission with quenched fluorescence and quantum yield. Over the past two decades, much effort has been devoted to developing novel pyrene-based fluorescent molecules and determining the luminescence mechanism for potential applications. Since the concept of "aggregation-induced emission (AIE)" was proposed by Tang et al. in 2001, aggregate science has been established, and the aggregated luminescence behaviour of pyrene-based materials has been extensively investigated. New pyrene-based emitters have been designed and synthesized not only to investigate the relationships between the molecular structure and properties and advanced applications but also to examine the effect of the aggregate morphology on their optical and electronic properties. Indeed, new aggregated pyrene-based molecules have emerged with unique properties, such as circularly polarized luminescence, excellent fluorescence and phosphorescence and electroluminescence, ultra-high mobility, etc. These properties are independent of their molecular constituents and allow for a number of cutting-edge technological applications, such as chemosensors, organic light-emitting diodes, organic field effect transistors, organic solar cells, Li-batteries, etc. Reviews published to-date have mainly concentrated on summarizing the molecular design and multi-functional applications of pyrene-based fluorophores, whereas the aggregation behaviour of pyrene-based luminescent materials has received very little attention. The majority of the multi-functional applications of pyrene molecules are not only closely related to their molecular structures, but also to the packing model they adopt in the aggregated state. In this review, we will summarize the intriguing optoelectronic properties of pyrene-based luminescent materials boosted by aggregation behaviour, and systematically establish the relationship between the molecular structure, aggregation states, and optoelectronic properties. This review will provide a new perspective for understanding the luminescence and electronic transition mechanism of pyrene-based materials and will facilitate further development of pyrene chemistry.
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Affiliation(s)
- Xing Feng
- Guangdong Provincial Key Laboratory of Information Photonics Technology, School of Material and Energy, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
| | - Xiaohui Wang
- Guangdong Provincial Key Laboratory of Information Photonics Technology, School of Material and Energy, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
| | - Carl Redshaw
- Chemistry, School of Natural Sciences, University of Hull, Hull, Yorkshire HU6 7RX, UK.
| | - Ben Zhong Tang
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Guangdong 518172, China.
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Luikham S, Yanthan S, Bhattacharyya J. Mechanistic investigation into the binding property of Yohimbe towards natural polymeric DNAs. Sci Rep 2023; 13:15487. [PMID: 37726357 PMCID: PMC10509242 DOI: 10.1038/s41598-023-40713-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 08/16/2023] [Indexed: 09/21/2023] Open
Abstract
DNA interactions with multivalent ligand(s) have increasingly become the subject of substantial research. For several small molecules with therapeutic potential, nucleic acids serve as their primary molecular target. Such interaction has been shown to affect transcription or replication, ultimately leading to apoptotic cell death. As a result, researchers are becoming increasingly interested in understanding how small molecules interact with DNA making it possible to develop new, DNA-specific drugs. The bioactive indole alkaloid, Yohimbe (Yohimbine; Yh) has been broadly studied in pharmacological properties while its binding mode to DNA has not been explicated so far. This study adopted molecular modelling and multi-spectroscopic methods to investigate the interaction between Yohimbine and herring testes (HT DNA) in physiological conditions. Minor hypochromic and bathochromic shifts of fluorescence intensity were observed, suggesting the binding of Yh to HT DNA. The Scatchard plot analyses using the McGhee-von Hipple method revealed non-cooperative binding and affinities in the range of 105 M-1. The thermodynamic parameters suggested exothermic binding, which was favoured by negative enthalpy and positive entropy changes from temperature-dependent fluorescence experiments. Salt-dependent fluorescence suggested that the interaction between the ligand and DNA was governed by non-polyelectrolytic forces. The results of iodide quenching, urea denaturation assay, dye displacement, and in silico molecular docking, suggested groove binding of Yh to HT DNA. Thus, the groove binding mechanism of interaction was validated by both biophysical and computational techniques. The structural elucidation and energetic profiling of Yh's interaction with naturally occurring polymeric DNA can be useful to the development of DNA-targeted therapeutics.
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Affiliation(s)
- Soching Luikham
- Department of Chemistry, National Institute of Technology Nagaland, Chumukedima, Nagaland, 797103, India
| | - Senchumbeni Yanthan
- Department of Chemistry, National Institute of Technology Nagaland, Chumukedima, Nagaland, 797103, India
| | - Jhimli Bhattacharyya
- Department of Chemistry, National Institute of Technology Nagaland, Chumukedima, Nagaland, 797103, India.
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Bera M, Das M, Dolai M, Laha S, Islam MM, Samanta BC, Das A, Choudhuri I, Bhattacharyya N, Maity T. DNA/Protein Binding and Apoptotic-Induced Anticancer Property of a First Time Reported Quercetin-Iron(III) Complex Having a Secondary Anionic Residue: A Combined Experimental and Theoretical Approach. ACS OMEGA 2023; 8:636-647. [PMID: 36643564 PMCID: PMC9835804 DOI: 10.1021/acsomega.2c05790] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
A new quercetin-based iron(III) cationic complex [Fe(Qr)Cl(H2O)(MeO)] (complex 1) is created in the current study by condensation of quercetin with ferric chloride in the presence of Et3N. Comprehensive spectroscopic analysis and conductometric measurement are used to pinpoint complex 1. The generated complex's +3-oxidation state has been verified by electron paramagnetic resonance (EPR) research. Density functional theory analysis was used to structurally optimize the structure of complex 1. Before biomedical use, a variety of biophysical studies are implemented to evaluate the binding capacity of complex 1 with DNA and human serum albumin (HSA) protein. The findings of the electronic titration between complex 1 and DNA, as well as the stunning fall in the fluorescence intensities of the HSA and EtBr-DNA/DAPI-DNA domain after complex 1 is gradually added, give us confidence that complex 1 has a strong affinity for both macromolecules. It is interesting to note that the displacement experiment confirms partial intercalation as well as the groove binding mechanism of the title complex with DNA. The time-dependent fluorescence analysis indicates that after interaction with complex 1, HSA will exhibit static quenching. The thermodynamic parameter values in the HSA-complex 1 interaction provide evidence for the hydrophobicity-induced pathway leading to spontaneous protein-complex 1 interaction. The two macromolecules' configurations are verified to be preserved when they are associated with complex 1, and this is done via circular dichroism spectral titration. The molecular docking investigation, which is a theoretical experiment, provides complete support for the experimental findings. The potential of the investigated complex to be an anticancer drug has been examined by employing the MTT assay technique, which is carried out on HeLa cancer cell lines and HEK-293 normal cell lines. The MTT assay results validate the ability of complex 1 to display significant anticancer properties. Finally, by using the AO/PI staining approach, the apoptotic-induced cell-killing mechanism as well as the detection of cell morphological changes has been confirmed.
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Affiliation(s)
- Manjushree Bera
- Department
of Nutrition, Prabhat Kumar College, Contai, Purba Medinipur, Contai721404, India
| | - Manik Das
- Department
of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur, Contai721404, India
| | - Malay Dolai
- Department
of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur, Contai721404, India
| | - Soumik Laha
- IICB,
Kolkata, Kolkata, 700032West Bengal, India
| | - Md Maidul Islam
- Department
of Chemistry, Aliah University, Kolkata700064, India
| | - Bidhan Chandra Samanta
- Department
of Chemistry, Mugberia Gangadhar Mahavidyalaya, Purba Medinipur, Contai721425, India
| | - Arindam Das
- Department
of Chemistry, Jadavpur University, Kolkata700032, India
| | | | | | - Tithi Maity
- Department
of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur, Contai721404, India
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Mayuri S, Jha NS. Fluorescent copper conjugated curcumin cysteine nanoprobe for selective determination of Fe 3+ and G-quadruplex DNA. Mikrochim Acta 2022; 190:17. [PMID: 36481915 DOI: 10.1007/s00604-022-05594-x] [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: 06/01/2022] [Accepted: 11/23/2022] [Indexed: 12/13/2022]
Abstract
The synthesis of fluorescent copper-curcumin-cysteine (Cu-CC) as a sensing platform is reported. The synthesized probe has been confirmed by UV-visible spectroscopy, FT-IR, XRD, SEM, and TEM characterization techniques, respectively. The mechanistic aspects of selective sensing of Fe3+ and detection of different G-quadruplex DNA have been illustrated based on the "turn-off-on" concept of a regeneratable fluorescence sensing probe at λex 450 nm. Interestingly, we have noticed a high selectivity to Fe3+ ion by the developed Cu-CC sensing probe in comparison with other metal ions. Furthermore, the restoration of fluorescence of the sensing probe in the presence of different DNA sequences is illustrating a cost-effective, convenient, and reliable detection methodology of DNA detection. It is highly sensitive for the determination of Pu27, promoter c-MYC quadruplex DNA in a wide linear range of 100-700 nM having a detection limit of 13.1 nM (RSD: 0.15%) and sensitivity of 37.2 cps/nM. Whereas, the Pu18 and H-telo telomeric DNA sequences are showing a narrow linear range, i.e., 10 nM-200 nM and 10 nM-180 nM, respectively. The real-world sample analysis performance of the regeneratable sensing probe for Pu27 DNA detection in fresh human blood serum samples is showing a satisfactory result.
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Affiliation(s)
- Sanyukta Mayuri
- Department of Chemistry, National Institute of Technology Patna, Ashok Rajpath, Patna, 800005, India
| | - Niki Sweta Jha
- Department of Chemistry, National Institute of Technology Patna, Ashok Rajpath, Patna, 800005, India.
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Luikham S, Mavani A, Bhattacharyya J. Deciphering binding affinity, energetics, and base specificity of plant alkaloid Harmane with AT & GC hairpin duplex DNA. LUMINESCENCE 2022; 37:691-701. [DOI: 10.1002/bio.4210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/01/2022] [Accepted: 02/08/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Soching Luikham
- Department of Chemistry National Institute of Technology Nagaland Chumukedima Dimapur Nagaland India
| | - A. Mavani
- Department of Chemistry National Institute of Technology Nagaland Chumukedima Dimapur Nagaland India
| | - Jhimli Bhattacharyya
- Department of Chemistry National Institute of Technology Nagaland Chumukedima Dimapur Nagaland India
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Multi-functional Photoelectric Sensor Based on a Three-fold Interpenetrated Cd(II) Coordination Polymer for Sensitive Detecting Different Ions. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-1445-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kim DS, Lee JK, Kim JH, Lee J, Kim DS, An S, Park SB, Kim TH, Rim JS, Lee S, Han DK. Advanced PLGA hybrid scaffold with a bioactive PDRN/BMP2 nanocomplex for angiogenesis and bone regeneration using human fetal MSCs. SCIENCE ADVANCES 2021; 7:eabj1083. [PMID: 34878837 PMCID: PMC8654289 DOI: 10.1126/sciadv.abj1083] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 10/16/2021] [Indexed: 05/14/2023]
Abstract
Biodegradable polymers have been used with various systems for tissue engineering. Among them, poly(lactic-co-glycolic) acid (PLGA) has been widely used as a biomaterial for bone regeneration because of its great biocompatibility and biodegradability properties. However, there remain substantial cruxes that the by-products of PLGA result in an acidic environment at the implanting site, and the polymer has a weak mechanical property. In our previous study, magnesium hydroxide (MH) and bone extracellular matrix are combined with a PLGA scaffold (PME) to improve anti-inflammation and mechanical properties and osteoconductivity. In the present study, the development of a bioactive nanocomplex (NC) formed along with polydeoxyribonucleotide and bone morphogenetic protein 2 (BMP2) provides synergistic abilities in angiogenesis and bone regeneration. This PME hybrid scaffold immobilized with NC (PME/NC) achieves outstanding performance in anti-inflammation, angiogenesis, and osteogenesis. Such an advanced PME/NC scaffold suggests an integrated bone graft substitute for bone regeneration.
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Affiliation(s)
- Da-Seul Kim
- Department of Biomedical Science, CHA University, Gyeonggi-do 13488, Republic of Korea
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jun-Kyu Lee
- Department of Biomedical Science, CHA University, Gyeonggi-do 13488, Republic of Korea
| | - Jun Hyuk Kim
- Department of Biomedical Science, CHA University, Gyeonggi-do 13488, Republic of Korea
| | - Jaemin Lee
- Department of Biomedical Science, CHA University, Gyeonggi-do 13488, Republic of Korea
| | - Dong Seon Kim
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, Republic of Korea
| | - Sanghyun An
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, Republic of Korea
| | - Sung-Bin Park
- Department of Biomedical Science, CHA University, Gyeonggi-do 13488, Republic of Korea
| | - Tae-Hyung Kim
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jong Seop Rim
- Fetal Stem Cell Research Center, CHA Advanced Research Institute, Gyeonggi-do 13488, Republic of Korea
| | - Soonchul Lee
- Department of Orthopaedic Surgery, CHA Bundang Medical Center, CHA University, Gyeonggi-do 13496, Republic of Korea
| | - Dong Keun Han
- Department of Biomedical Science, CHA University, Gyeonggi-do 13488, Republic of Korea
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Pavadai R, Amalraj A, Subramanian S, Perumal P. High Catalytic Activity of Fluorophore-Labeled Y-Shaped DNAzyme/3D MOF-MoS 2NBs as a Versatile Biosensing Platform for the Simultaneous Detection of Hg 2+, Ni 2+, and Ag + Ions. ACS APPLIED MATERIALS & INTERFACES 2021; 13:31710-31724. [PMID: 34213303 DOI: 10.1021/acsami.1c07086] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, we have designed a three-fluorophore-labeled Y-shaped DNAzyme with a high catalytic cleavage activity and a three-dimensional (3D) MOF-MoS2NB (metal-organic framework fused with molybdenum disulfide nanobox), which was synthesized as an efficient quencher of the fluorescent biosensor. The synthesized porous 3D MOF-MoS2NBs and Y-shaped DNAzyme exhibited a good analytical response toward the simultaneous multiple detections of Hg2+, Ni2+, and Ag+ ions over the other coexisting metal ions. More specifically, the three kinds of enzyme aptamer and substrate aptamer (SA) were hybridized and annealed to form the Y-shaped DNAzyme structure and labeled with three different fluorophores such as FAM, TAMRA, and ROX over the 3'-end of SA. When the targets were induced, the DNAzyme was triggered to cleave the fluorophore-labeled SAs. Then, the cleaved SAs (FAM-SA, TAMRA-SA, and ROX-SA) were adsorbed on the 3D MOF-MoS2NB surface to quench the fluorescence signal due to a noncovalent interaction (van der Waals and π-π stacking interaction), which transmuted the fluorescence on-state to off-state. As a result, the fluorescence assay confiscated the high selectivity and sensitivity for the target analytes of Hg2+, Ni2+, and Ag+ ions achieved for the detection limits of 0.11 nM, 7.8 μM, and 0.25 nM, respectively. Accordingly, the sensitivity of the developed sensor was explored with a better lower detection limit than the previously reported biosensors. The utility of the designed Y-shaped DNAzyme may find a broad field of application in real water sample analysis with interfering contaminants.
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Affiliation(s)
- Rajaji Pavadai
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - Arunjegan Amalraj
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - Sivanesan Subramanian
- Department of Applied Science and Technology, A.C Technology, Anna University, Chennai 600 025, India
| | - Panneerselvam Perumal
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
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Saha U, Mabhai S, Das B, Kumar GS, Brandão P, Dolai M. Combined theoretical and experimental investigation of a DNA interactive poly-hydroxyl enamine tautomer exhibiting “turn on” sensing for Zn 2+ in pseudo-aqueous medium. NEW J CHEM 2021. [DOI: 10.1039/d1nj03510j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crystallographically established (solid state structure at 150 K temperature) synthesized enamine ligand (H4L) showed interconvertible equilibrium (ΔE = 7.37 kcal) of its tautomers, displayed zinc sensing and also found to exhibit DNA binding activity at the minor groove of double-stranded (ds) DNA.
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Affiliation(s)
- Urmila Saha
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata 700 032, W.B., India
| | - Subhabrata Mabhai
- Department of Chemistry, Mahishadal Raj College, Purba Medinipur 721628, W.B., India
| | - Bhriguram Das
- Department of Chemistry, Vidyasagar University, Paschim Medinipur 721102, W. B., India
| | - Gopinatha Suresh Kumar
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata 700 032, W.B., India
| | - Paula Brandão
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Malay Dolai
- Department of Chemistry, Prabhat Kumar College, Purba Medinipur 721404, W.B., India
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