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Lone MS, Bhat PA, Afzal S, Chat OA, Dar AA. Energy transduction through FRET in self-assembled soft nanostructures based on surfactants/polymers: current scenario and prospects. SOFT MATTER 2021; 17:425-446. [PMID: 33400748 DOI: 10.1039/d0sm01625j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The self-assembled systems of surfactants/polymers, which are capable of supporting energy funneling between fluorophores, have recently gained significant attraction. Surfactant and polymeric micelles form nanoscale structures spanning a radius of 2-10 nm are generally suitable for the transduction of energy among fluorophores. These systems have shown great potential in Förster resonance energy transfer (FRET) due to their unique characteristics of being aqueous based, tendency to remain self-assembled, spontaneous formation, tunable nature, and responsiveness to different external stimuli. This review presents current developments in the field of energy transfer, particularly the multi-step FRET processes in the self-assembled nanostructures of surfactants/polymers. The part one of this review presents a background and brief overview of soft systems and discusses certain aspects of the self-assemblies of surfactants/polymers and their co-solubilization property to bring fluorophores to close proximity to transduce energy. The second part of this review deals with single-step and multi-step FRET in the self-assemblies of surfactants/polymers and links FRET systems with advanced smart technologies including multicolor formation, data encryption, and artificial antenna systems. This review also discusses the diverse examples in the literature to present the emerging applications of FRET. Finally, the prospects regarding further improvement of FRET in self-assembled soft systems are outlined.
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Affiliation(s)
- Mohd Sajid Lone
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
| | - Parvaiz Ahmad Bhat
- Department of Chemistry, Government Degree College, Pulwama-192301, J&K, India.
| | - Saima Afzal
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
| | - Oyais Ahmad Chat
- Department of Chemistry, Government Degree College, Pulwama-192301, J&K, India.
| | - Aijaz Ahmad Dar
- Soft Matter Research Group, Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India.
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Ahmed SA, Nur Hasan M, Bagchi D, Altass HM, Morad M, Althagafi II, Hameed AM, Sayqal A, Khder AERS, Asghar BH, Katouah HA, Pal SK. Nano-MOFs as targeted drug delivery agents to combat antibiotic-resistant bacterial infections. ROYAL SOCIETY OPEN SCIENCE 2020; 7:200959. [PMID: 33489263 PMCID: PMC7813248 DOI: 10.1098/rsos.200959] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 08/24/2020] [Indexed: 05/07/2023]
Abstract
The drug resistance of bacteria is a significant threat to human civilization while the action of antibiotics against drug-resistant bacteria is severely limited owing to the hydrophobic nature of drug molecules, which unquestionably inhibit its permanency for clinical applications. The antibacterial action of nanomaterials offers major modalities to combat drug resistance of bacteria. The current work reports the use of nano-metal-organic frameworks encapsulating drug molecules to enhance its antibacterial activity against model drug-resistant bacteria and biofilm of the bacteria. We have attached rifampicin (RF), a well-documented antituberculosis drug with tremendous pharmacological significance, into the pore surface of zeolitic imidazolate framework 8 (ZIF8) by a simple synthetic procedure. The synthesized ZIF8 has been characterized using the X-ray diffraction (XRD) method before and after drug encapsulation. The electron microscopic strategies such as scanning electron microscope and transmission electron microscope methods were performed to characterize the binding between ZIF8 and RF. We have also performed picosecond-resolved fluorescence spectroscopy to validate the formation of the ZIF8-RF nanohybrids (NHs). The drug release profile experiment demonstrates that ZIF8-RF depicts pH-responsive drug delivery and is ideal for targeting bacterial disease corresponding to its inherent acidic nature. Most remarkably, ZIF8-RF gives enhanced antibacterial activity against methicillin-resistant Staphylococcus aureus bacteria and also prompts entire damage of structurally robust bacterial biofilms. Overall, the present study depicts a detailed physical insight for manufactured antibiotic-encapsulated NHs presenting tremendous antimicrobial activity that can be beneficial for manifold practical applications.
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Affiliation(s)
- Saleh A. Ahmed
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
- Chemistry Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt
| | - Md. Nur Hasan
- Department of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, SaltLake, Kolkata 700 106, India
| | - Damayanti Bagchi
- Department of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, SaltLake, Kolkata 700 106, India
| | - Hatem M. Altass
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Moataz Morad
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Ismail I. Althagafi
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Ahmed M. Hameed
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Ali Sayqal
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Abd El Rahman S. Khder
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Basim H. Asghar
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Hanadi A. Katouah
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Samir Kumar Pal
- Department of Chemical, Biological and Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, SaltLake, Kolkata 700 106, India
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Zhang Q, Morgan SP, Mather ML. Nanoscale Ultrasound-Switchable FRET-Based Liposomes for Near-Infrared Fluorescence Imaging in Optically Turbid Media. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1602895. [PMID: 28692762 DOI: 10.1002/smll.201602895] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 04/21/2017] [Indexed: 06/07/2023]
Abstract
A new approach for fluorescence imaging in optically turbid media centered on the use of nanoscale ultrasound-switchable FRET-based liposome contrast agents is reported. Liposomes containing lipophilic carbocyanine dyes as FRET pairs with emission wavelengths located in the near-infrared window are prepared. The efficacy of FRET and self-quenching for liposomes with a range of fluorophore concentrations is first calculated from measurement of the liposome emission spectra. Exposure of the liposomes to ultrasound results in changes in the detected fluorescent signal, the nature of which depends on the fluorophores used, detection wavelength, and the fluorophore concentration. Line scanning of a tube containing the contrast agents with 1 mm inner diameter buried at a depth of 1 cm in a heavily scattering tissue phantom demonstrates an improvement in image spatial resolution by a factor of 6.3 as compared with images obtained in the absence of ultrasound. Improvements are also seen in image contrast with the highest obtained being 9% for a liposome system containing FRET pairs. Overall the results obtained provide evidence of the potential the nanoscale ultrasound-switchable FRET-based liposomes studied here have for in vivo fluorescence imaging.
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Affiliation(s)
- Qimei Zhang
- Optics and Photonics Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Stephen P Morgan
- Optics and Photonics Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Melissa L Mather
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, ST4 7QB, UK
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System with embedded drug release and nanoparticle degradation sensor showing efficient rifampicin delivery into macrophages. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:307-315. [DOI: 10.1016/j.nano.2016.08.031] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 08/09/2016] [Accepted: 08/26/2016] [Indexed: 10/21/2022]
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Batabyal S, Choudhury S, Sao D, Mondol T, Kumar Pal S. Dynamical perspective of protein-DNA interaction. Biomol Concepts 2015; 5:21-43. [PMID: 25372740 DOI: 10.1515/bmc-2013-0037] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 01/15/2014] [Indexed: 01/29/2023] Open
Abstract
The interactions between protein-DNA are essential for various biological activities. In this review, we provide an overview of protein-DNA interactions that emphasizes the importance of dynamical aspects. We divide protein-DNA interactions into two categories: nonspecific and specific and both the categories would be discussed highlighting some of our relevant work. In the case of nonspecific protein-DNA interaction, solvation studies (picosecond and femtosecond-resolved) explore the role environmental dynamics and change in the micropolarity around DNA molecules upon complexation with histone protein (H1). While exploring the specific protein-DNA interaction at λ-repressor-operator sites interaction, particularly OR1 and OR2, it was observed that the interfacial water dynamics is minimally perturbed upon interaction with DNA, suggesting the labile interface in the protein-DNA complex. Förster resonance energy transfer (FRET) study revealed that the structure of the protein is more compact in repressor-OR2 complex than in the repressor-OR1 complex. Fluorescence anisotropy studies indicated enhanced flexibility of the C-terminal domain of the repressor at fast timescales after complex formation with OR1. The enhanced flexibility and different conformation of the C-terminal domain of the repressor upon complexation with OR1 DNA compared to OR2 DNA were found to have pronounced effect on the rate of photoinduced electron transfer.
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Batabyal S, Mondol T, Choudhury S, Mazumder A, Pal SK. Ultrafast interfacial solvation dynamics in specific protein DNA recognition. Biochimie 2013; 95:2168-76. [DOI: 10.1016/j.biochi.2013.08.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 08/06/2013] [Indexed: 12/14/2022]
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