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Liang Q, Liu Z, Liang Z, Zhu C, Li D, Kong Q, Mou H. Development strategies and application of antimicrobial peptides as future alternatives to in-feed antibiotics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172150. [PMID: 38580107 DOI: 10.1016/j.scitotenv.2024.172150] [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: 01/12/2024] [Revised: 03/14/2024] [Accepted: 03/30/2024] [Indexed: 04/07/2024]
Abstract
The use of in-feed antibiotics has been widely restricted due to the significant environmental pollution and food safety concerns they have caused. Antimicrobial peptides (AMPs) have attracted widespread attention as potential future alternatives to in-feed antibiotics owing to their demonstrated antimicrobial activity and environment friendly characteristics. However, the challenges of weak bioactivity, immature stability, and low production yields of natural AMPs impede practical application in the feed industry. To address these problems, efforts have been made to develop strategies for approaching the AMPs with enhanced properties. Herein, we summarize approaches to improving the properties of AMPs as potential alternatives to in-feed antibiotics, mainly including optimization of structural parameters, sequence modification, selection of microbial hosts, fusion expression, and industrially fermentation control. Additionally, the potential for application of AMPs in animal husbandry is discussed. This comprehensive review lays a strong theoretical foundation for the development of in-feed AMPs to achieve the public health globally.
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Affiliation(s)
- Qingping Liang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Zhemin Liu
- Fundamental Science R&D Center of Vazyme Biotech Co. Ltd., Nanjing 210000, China
| | - Ziyu Liang
- Section of Neurobiology, Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, USA
| | - Changliang Zhu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Dongyu Li
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Qing Kong
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China.
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2
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Dean TT, Jelú-Reyes J, Allen AC, Moore TW. Peptide-Drug Conjugates: An Emerging Direction for the Next Generation of Peptide Therapeutics. J Med Chem 2024; 67:1641-1661. [PMID: 38277480 PMCID: PMC10922862 DOI: 10.1021/acs.jmedchem.3c01835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
Building on recent advances in peptide science, medicinal chemists have developed a hybrid class of bioconjugates, called peptide-drug conjugates, that demonstrate improved efficacy compared to peptides and small molecules independently. In this Perspective, we discuss how the conjugation of synergistic peptides and small molecules can be used to overcome complex disease states and resistance mechanisms that have eluded contemporary therapies because of their multi-component activity. We highlight how peptide-drug conjugates display a multi-factor therapeutic mechanism similar to that of antibody-drug conjugates but also demonstrate improved therapeutic properties such as less-severe off-target effects and conjugation strategies with greater site-specificity. The many considerations that go into peptide-drug conjugate design and optimization, such as peptide/small-molecule pairing and chemo-selective chemistries, are discussed. We also examine several peptide-drug conjugate series that demonstrate notable activity toward complex disease states such as neurodegenerative disorders and inflammation, as well as viral and bacterial targets with established resistance mechanisms.
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3
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Raileanu M, Borlan R, Campu A, Janosi L, Turcu I, Focsan M, Bacalum M. No country for old antibiotics! Antimicrobial peptides (AMPs) as next-generation treatment for skin and soft tissue infection. Int J Pharm 2023:123169. [PMID: 37356506 DOI: 10.1016/j.ijpharm.2023.123169] [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: 04/12/2023] [Revised: 06/01/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
In recent years, the unprecedented rise of bacterial antibiotic resistance together with the lack of adequate therapies have made the treatment of skin infections and chronic wounds challenging, urging the scientific community to focus on the development of new and more efficient treatment strategies. In this context, there is a growing interest in the use of natural molecules with antimicrobial features, capable of supporting wound healing i.e., antimicrobial peptides (AMPs), for the treatment of skin and soft tissue infections. In this review, we give a short overview of the bacterial skin infections as well as some of the classic treatments used for topical application. We then summarize the AMPs classes, stressing the importance of the appropriate selection of the peptides based on their characteristics and physicochemical properties in order to maximize the antibacterial efficacy of the therapeutic systems against multi-drug resistant pathogens. Additionally, the present paper provides a comprehensive and rigorous assessment of the latest clinical trials investigating the efficacy of AMPs in the treatment of skin and soft tissue infections, highlighting the relevant outcomes. Seeking to obtain novel and improved compounds with synergistic activity, while also decreasing some of the known side effects of AMPs, we present two employed strategies using AMPs: (i) AMPs-conjugated nanosystems for systemic and topical drug delivery systems and (ii) antibiotics-peptide conjugates as a strategy to overcome antibiotics resistance. Finally, an important property of some of the AMPs used in wound treatment is highlighted: their ability to help in wound healing by generally promoting cell proliferation and migration, and in some cases re-epithelialization and angiogenesis among others. Thus, as the pursuit of improvement is an ongoing effort, this work presents the advances made in the treatment of skin and soft tissue infections along with their advantages and limitations, while the still remaining challenges are addressed by providing future prospects and strategies to overcome them.
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Affiliation(s)
- Mina Raileanu
- Department of Life and Environmental Physics, Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, Măgurele 077125, Romania
| | - Raluca Borlan
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurian No. 42, 400271 Cluj-Napoca, Romania
| | - Andreea Campu
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurian No. 42, 400271 Cluj-Napoca, Romania
| | - Lorant Janosi
- Molecular and Biomolecular Physics Department, National Institute for Research and Development of Isotopic and Molecular Technologies, 65-103 Donath Street, 400293 Cluj-Napoca, Romania
| | - Ioan Turcu
- Molecular and Biomolecular Physics Department, National Institute for Research and Development of Isotopic and Molecular Technologies, 65-103 Donath Street, 400293 Cluj-Napoca, Romania
| | - Monica Focsan
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, Treboniu Laurian No. 42, 400271 Cluj-Napoca, Romania.
| | - Mihaela Bacalum
- Department of Life and Environmental Physics, Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, Măgurele 077125, Romania.
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4
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Cationic RGD peptidomimetic nanoconjugates as effective tumor targeting gene delivery vectors with antimicrobial potential. Bioorg Chem 2022; 129:106197. [DOI: 10.1016/j.bioorg.2022.106197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/23/2022] [Accepted: 10/04/2022] [Indexed: 11/22/2022]
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5
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Monteiro KLC, Silva ON, Dos Santos Nascimento IJ, Mendonça Júnior FJB, Aquino PGV, da Silva-Júnior EF, de Aquino TM. Medicinal Chemistry of Inhibitors Targeting Resistant Bacteria. Curr Top Med Chem 2022; 22:1983-2028. [PMID: 35319372 DOI: 10.2174/1568026622666220321124452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 02/01/2022] [Accepted: 02/13/2022] [Indexed: 12/15/2022]
Abstract
The discovery of antibiotics was a revolutionary feat that provided countless health benefits. The identification of penicillin by Alexander Fleming initiated the era of antibiotics, represented by constant discoveries that enabled effective treatments for the different classes of diseases caused by bacteria. However, the indiscriminate use of these drugs allowed the emergence of resistance mechanisms of these microorganisms against the available drugs. In addition, the constant discoveries in the 20th century generated a shortage of new molecules, worrying health agencies and professionals about the appearance of multidrug-resistant strains against available drugs. In this context, the advances of recent years in molecular biology and microbiology have allowed new perspectives in drug design and development, using the findings related to the mechanisms of bacterial resistance to generate new drugs that are not affected by such mechanisms and supply new molecules to be used to treat resistant bacterial infections. Besides, a promising strategy against bacterial resistance is the combination of drugs through adjuvants, providing new expectations in designing new antibiotics and new antimicrobial therapies. Thus, this manuscript will address the main mechanisms of bacterial resistance under the understanding of medicinal chemistry, showing the main active compounds against efflux mechanisms, and also the application of the use of drug delivery systems, and finally, the main potential natural products as adjuvants or with promising activity against resistant strains.
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Affiliation(s)
- Kadja Luana Chagas Monteiro
- Research Group on Therapeutic Strategies - GPET, Laboratory of Synthesis and Research in Medicinal Chemistry - LSPMED, Institute of Chemistry and Biotechnology, Federal University of Alagoas, 57072-970, Maceió, Alagoas, Brazil
| | - Osmar Nascimento Silva
- Faculty of Pharmacy, University Center of Anápolis, Unievangélica, 75083-515, Anápolis, Goiás, Brazil
| | - Igor José Dos Santos Nascimento
- Research Group on Therapeutic Strategies - GPET, Laboratory of Synthesis and Research in Medicinal Chemistry - LSPMED, Institute of Chemistry and Biotechnology, Federal University of Alagoas, 57072-970, Maceió, Alagoas, Brazil
| | | | | | - Edeildo Ferreira da Silva-Júnior
- Laboratory of Medicinal Chemistry, Institute of Pharmaceutical Sciences, Federal University of Alagoas, 57072-970, Maceió, Alagoas, Brazil
| | - Thiago Mendonça de Aquino
- Research Group on Therapeutic Strategies - GPET, Laboratory of Synthesis and Research in Medicinal Chemistry - LSPMED, Institute of Chemistry and Biotechnology, Federal University of Alagoas, 57072-970, Maceió, Alagoas, Brazil
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6
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Yadav S, Singh R, Kumar P. Bioresponsive inulin‐azobenzene nanostructures for targeted drug delivery to colon. J Appl Polym Sci 2022. [DOI: 10.1002/app.52950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Santosh Yadav
- Nucleic Acids Research Laboratory CSIR‐Institute of Genomics and Integrative Biology Delhi India
| | - Reena Singh
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
| | - Pradeep Kumar
- Nucleic Acids Research Laboratory CSIR‐Institute of Genomics and Integrative Biology Delhi India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
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7
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Harnessing the gene delivery, anti-cancer and antimicrobial potential of polyethylene biguanides and their nanotized forms. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03142-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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8
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Wang C, Hong T, Cui P, Wang J, Xia J. Antimicrobial peptides towards clinical application: Delivery and formulation. Adv Drug Deliv Rev 2021; 175:113818. [PMID: 34090965 DOI: 10.1016/j.addr.2021.05.028] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 05/14/2021] [Accepted: 05/30/2021] [Indexed: 02/07/2023]
Abstract
Antimicrobial peptides hold promise to supplement small molecules antibiotics and combat the multidrug resistant microbes. There are however technical hurdles towards the clinical applications, largely due to the inherent limitations of peptides including stability, cytotoxicity and bioavailability. Here we review recent studies concerning the delivery and formulation of antimicrobial peptides, by categorizing the different strategies as driven by physical interactions or chemical conjugation reactions, and carriers ranging from inorganic based ones (including gold, silver and silica based solid nanoparticles) to organic ones (including micelle, liposome and hydrogel) are covered. Besides, targeted delivery of antimicrobial peptides or using antimicrobial peptides as the targeting moiety, and responsive release of the peptides after delivery are also reviewed. Lastly, strategies towards the increase of oral bioavailability, from both physical or chemical methods, are highlighted. Altogether, this article provides a comprehensive review of the recent progress of the delivery and formulation of antimicrobial peptides towards clinical application.
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Affiliation(s)
- Cheng Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Tingting Hong
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Pengfei Cui
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Jianhao Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China.
| | - Jiang Xia
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region.
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9
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Yadav S, Sharma AK, Kumar P. Tight Binding of Plasmid DNA With Self-Assembled Tetramethylguanidinium Conjugated Polyethylenimine Suppresses Transfection Efficiency. FRONTIERS IN NANOTECHNOLOGY 2021. [DOI: 10.3389/fnano.2021.674360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Here, we have demonstrated that on modification of linear polyethylenimine (lPEI, LP) with amphiphilic 3-bromopropyltetramethylguanidinium (PTMG) linker, the transfection efficiency exhibited by the modified polymers decreased while cell viability improved. A series of LP-PTMG polymers was synthesized by the reaction of varying amounts of 3-bromopropyl tetramethylguanidinium linker with lPEI (25 kDa). These modified polymers interacted efficiently with pDNA and formed nanosized complexes as shown by dynamic light scattering analysis. The size of the complexes in the series LP-PTMG/pDNA was observed in the range of ∼178–205 nm. The interaction of modified polymers with plasmid DNA was stronger than linear PEI as evidenced by heparin release assay which showed ∼83% pDNA release from LP-PTMG-3/pDNA complexes in comparison to ∼95% in lPEI/pDNA complexes on treatment with same amount of heparin suggesting the formation of self-assembled structures in modified polymers. The transfection studies in HeLa and Chinese hamster ovary cells showed a decrease in transfection efficiency of LP-PTMG polymers, the reason for this may be strong binding of modified polymers with pDNA due to accumulation of charge on the surface. This finding showed the significance of optimum binding of polymer and DNA to form polyplexes as well as release of DNA from the polyplexes.
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10
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Bellucci MC, Volonterio A. Aminoglycosides: From Antibiotics to Building Blocks for the Synthesis and Development of Gene Delivery Vehicles. Antibiotics (Basel) 2020; 9:E504. [PMID: 32796727 PMCID: PMC7459817 DOI: 10.3390/antibiotics9080504] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/29/2020] [Accepted: 08/07/2020] [Indexed: 02/06/2023] Open
Abstract
Aminoglycosides are a class of naturally occurring and semi synthetic antibiotics that have been used for a long time in fighting bacterial infections. Due to acquired antibiotic resistance and inherent toxicity, aminoglycosides have experienced a decrease in interest over time. However, in the last decade, we are seeing a renaissance of aminoglycosides thanks to a better understanding of their chemistry and mode of action, which had led to new trends of application. The purpose of this comprehensive review is to highlight one of these new fields of application: the use of aminoglycosides as building blocks for the development of liposomal and polymeric vectors for gene delivery. The design, synthetic strategies, ability to condensate the genetic material, the efficiency in transfection, and cytotoxicity as well as when available, the antibacterial activity of aminoglycoside-based cationic lipids and polymers are covered and critically analyzed.
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Affiliation(s)
- Maria Cristina Bellucci
- Department of Food, Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy;
| | - Alessandro Volonterio
- Department of Chemistry, Material and Chemical Engineer “Giulio Natta”, Politecnico di Milano, via Mancinelli 7, 20131 Milano, Italy
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11
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In Vitro Assessment of Core-Shell Micellar Nanostructures of Amphiphilic Cationic Polymer-Peptide Conjugates as Efficient Gene and Drug Carriers. J Pharm Sci 2020; 109:2847-2853. [PMID: 32473212 DOI: 10.1016/j.xphs.2020.05.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/18/2020] [Indexed: 11/21/2022]
Abstract
Design and development of biocompatible, biodegradable and stable dual delivery systems for drug and gene is the need of the hour. Here, we have designed a strategy to develop carrier systems consisting of above mentioned properties by (a) incorporating an unnatural amino acid in the peptide backbone, and b) conjugating a low molecular weight cationic polymer (polyethylenimine, PEI) for incorporating cationic charge. Using this strategy, we have synthesized a small series of Boc-FΔF-AH-polyethylenimine conjugates by varying the concentration of Boc-FΔF-aminohexanoic acid, viz., PP-1, PP-2 and PP-3. These conjugates self-assembled in aqueous medium to form micelles in the size range of ~144-205 nm with zeta potential ~ +7.9-14.2 mV bearing core-shell type of conformation. Positive surface of the micelles facilitated the binding of plasmid DNA as well as transportation inside the cells. The hydrophobic core of the nanostructures helped in the encapsulation of the hydrophobic drug molecule, which was then got released in a controlled manner. DNA complexes of the conjugates were not only found non-toxic but also exhibited higher transfection efficacy than the native polymer and Lipofectamine. Altogether, these nanostructures are capable of delivering a drug and a gene simultaneously in vitro and could be used as next-generation delivery agents.
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12
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Yadav S, Sharma AK, Kumar P. Nanoscale Self-Assembly for Therapeutic Delivery. Front Bioeng Biotechnol 2020; 8:127. [PMID: 32158749 PMCID: PMC7051917 DOI: 10.3389/fbioe.2020.00127] [Citation(s) in RCA: 132] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 02/10/2020] [Indexed: 12/23/2022] Open
Abstract
Self-assembly is the process of association of individual units of a material into highly arranged/ordered structures/patterns. It imparts unique properties to both inorganic and organic structures, so generated, via non-covalent interactions. Currently, self-assembled nanomaterials are finding a wide variety of applications in the area of nanotechnology, imaging techniques, biosensors, biomedical sciences, etc., due to its simplicity, spontaneity, scalability, versatility, and inexpensiveness. Self-assembly of amphiphiles into nanostructures (micelles, vesicles, and hydrogels) happens due to various physical interactions. Recent advancements in the area of drug delivery have opened up newer avenues to develop novel drug delivery systems (DDSs) and self-assembled nanostructures have shown their tremendous potential to be used as facile and efficient materials for this purpose. The main objective of the projected review is to provide readers a concise and straightforward knowledge of basic concepts of supramolecular self-assembly process and how these highly functionalized and efficient nanomaterials can be useful in biomedical applications. Approaches for the self-assembly have been discussed for the fabrication of nanostructures. Advantages and limitations of these systems along with the parameters that are to be taken into consideration while designing a therapeutic delivery vehicle have also been outlined. In this review, various macro- and small-molecule-based systems have been elaborated. Besides, a section on DNA nanostructures as intelligent materials for future applications is also included.
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Affiliation(s)
| | | | - Pradeep Kumar
- Nucleic Acids Research Laboratory, CSIR Institute of Genomics and Integrative Biology, Delhi, India
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Zhen JB, Kang PW, Zhao MH, Yang KW. Silver Nanoparticle Conjugated Star PCL-b-AMPs Copolymer as Nanocomposite Exhibits Efficient Antibacterial Properties. Bioconjug Chem 2019; 31:51-63. [DOI: 10.1021/acs.bioconjchem.9b00739] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jian-Bin Zhen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, the Chemical Biology Innovation Laboratory, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Peng-Wei Kang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, the Chemical Biology Innovation Laboratory, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Mu-Han Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, the Chemical Biology Innovation Laboratory, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Ke-Wu Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, the Chemical Biology Innovation Laboratory, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
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14
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Yang Y, Xia M, Zhao H, Zhang S, Zhang X. A Cell-Surface-Specific Ratiometric Fluorescent Probe for Extracellular pH Sensing with Solid-State Fluorophore. ACS Sens 2018; 3:2278-2285. [PMID: 30350591 DOI: 10.1021/acssensors.8b00514] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Extracellular acidity is correlated with the development of various pathological states and bulk pH measurements could not report surface acidity. In this study, we have developed a ratiometric fluorescent probe that aggregates upon interaction with cells, allowing persistent labeling of cells and in situ measurement of cell surface pH. The ternary nanoplatform is constructed by a convenient noncovalent combination of bovine serum albumin protected gold nanoclusters (BSA-AuNCs), fluorescein isothiocyanate (FITC) labeled cationic peptides (CPs), and FITC-free CPs. The red fluorescent AuNCs serve as reference fluorophore, while FITC labeled peptides act as specific recognition element for H+ and FITC unlabeled peptides are used for delivery. The probe displays a sensitive fluorescence ratiometric response for pH in the range of 5.0-9.5 with calculated p Ka of 7.2. Further studies have demonstrated that this nanosensor also has properties of high selectivity, reversibility to pH fluctuations, as well as low cytotoxicity. The new surface pH-measurement tool was validated in mapping extracellular pH and monitoring acidification regarding cell metabolism, demonstrating its potential for bioimaging and biosensing.
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Affiliation(s)
- Yan Yang
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Tsinghua University, Beijing, 100084, P.R. China
| | - Mengchan Xia
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Tsinghua University, Beijing, 100084, P.R. China
| | - Hansen Zhao
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Tsinghua University, Beijing, 100084, P.R. China
| | - Sichun Zhang
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Tsinghua University, Beijing, 100084, P.R. China
| | - Xinrong Zhang
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Tsinghua University, Beijing, 100084, P.R. China
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15
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Enhanced uptake of plasmid at boronic acid decorated linear polyethylenimines results in higher transfection efficiency. Biointerphases 2018; 13:061003. [PMID: 30458622 DOI: 10.1116/1.5054930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
High molecular weight polyethylenimines (PEIs) are considered as gold standard for transfection studies; however, cytotoxicity associated with branched ones and lower charge density on linear PEIs as well as lower uptake of the resulting deoxyribonucleic acid (DNA) complexes have limited their applications in clinical studies. In order to address these concerns and improve the uptake efficiency of the DNA complexes of linear polyethylenimine (25 kDa), the polymer was grafted with variable amounts of butylboronic acid to obtain a small series of linear polyethylenimine-butylboronic acid polymers. These modified polymers were allowed to interact with plasmid DNA and the resulting complexes were characterized by physicochemical techniques. Dynamic light scattering data showed the formation of nanosized complexes with positive zeta potential values. Furthermore, when these complexes were evaluated in vitro, they not only showed enhanced cell viability but also exhibited higher transfection efficiency as compared to native linear and branched PEIs and a commercially available standard transfection reagent, Lipofectamine 2000.
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16
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Yadav S, Mahato M, Jha D, Ahmadi Z, Gautam H, Sharma A. Enhanced antibacterial activity of tetramethylguanidinium-conjugated linear polyethylenimine polymers. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2017.1393679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- S. Yadav
- CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
| | - M. Mahato
- CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
| | - D. Jha
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, New Delhi, India
| | - Z. Ahmadi
- CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
| | - H.K. Gautam
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, New Delhi, India
| | - A.K. Sharma
- CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
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17
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Bono N, Pennetta C, Sganappa A, Giupponi E, Sansone F, Volonterio A, Candiani G. Design and synthesis of biologically active cationic amphiphiles built on the calix[4]arene scaffold. Int J Pharm 2018; 549:436-445. [DOI: 10.1016/j.ijpharm.2018.08.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 07/27/2018] [Accepted: 08/13/2018] [Indexed: 12/14/2022]
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18
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Priyam A, Shivhare K, Yadav S, Sharma AK, Kumar P. Enhanced solubility and self-assembly of amphiphilic sulfasalazine-PEG-OMe (S-PEG) conjugate into core-shell nanostructures useful for colonic drug delivery. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.03.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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19
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Goel R, Garg C, Gautam HK, Sharma AK, Kumar P, Gupta A. Fabrication of cationic nanostructures from short self-assembling amphiphilic mixed α/β-pentapeptide: Potential candidates for drug delivery, gene delivery, and antimicrobial applications. Int J Biol Macromol 2018; 111:880-893. [PMID: 29355630 DOI: 10.1016/j.ijbiomac.2018.01.079] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/11/2018] [Accepted: 01/12/2018] [Indexed: 12/18/2022]
Abstract
The present article describes designing and fabrication of nanostructures from a mixed α/β-pentapeptide, Lys-βAla-βAla-Lys-βAla, which majorly contains non-natural β-alanine residues in the backbone with two α-lysine residues at 1- and 4-positions. The amphiphilic pentapeptide showed the ability to self-assemble into cationic nanovesicles in an aqueous solution. The average size of peptide nanostructures was found to be ~270 nm with a very high cationic charge of ~+40 mV. TEM micrographs revealed the average size of the same nanostructures ~80 nm bearing vesicular morphology. CD and FTIR spectroscopic studies on self-assembled pentapeptide hinted at random coil conformation which was also correlated with conformational search program using Hyper Chem 8.0. The pentapeptide nanostructures were then tested for encapsulation of hydrophobic model drug moieties, L-Dopa, and curcumin. Transfection efficiency of the generated cationic nanostructures was evaluated on HEK293 cells and compared the results with those obtained in the presence of chloroquine. The cytotoxicity assay performed using MTT depicted ~75-80% cell viability. The obtained nanostructures also gave positive results against both Gram-negative and Gram-positive bacterial strains. Altogether the results advocate the promising potential of the pentapeptide foldamer, H-Lys-βAla-βAla-Lys-βAla-OEt, for drug and gene delivery applications along with the antimicrobial activity.
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Affiliation(s)
- Rahul Goel
- Department of Chemistry, Dyal Singh College, University of Delhi, Lodhi Road, New Delhi 110003, India
| | - Charu Garg
- Department of Chemistry, Dyal Singh College, University of Delhi, Lodhi Road, New Delhi 110003, India; Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India
| | - Hemant Kumar Gautam
- Microbial Technology Laboratory, CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, New Delhi 110025, India
| | - Ashwani Kumar Sharma
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India
| | - Pradeep Kumar
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India
| | - Alka Gupta
- Department of Chemistry, Dyal Singh College, University of Delhi, Lodhi Road, New Delhi 110003, India.
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Li Y, Cai P, Tong ZF, Xiao H, Pan Y. Preparation of Copolymer-Based Nanoparticles with Broad-Spectrum Antimicrobial Activity. Polymers (Basel) 2017; 9:E717. [PMID: 30966016 PMCID: PMC6418692 DOI: 10.3390/polym9120717] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/01/2017] [Accepted: 12/10/2017] [Indexed: 12/16/2022] Open
Abstract
Polyacrylate and guanidine-based nanoparticles which involve acrylate monomers and glycidyl methacrylate modified oligo-guanidine were prepared by a seeded semi-continuous emulsion polymerization. The results from transmission electron microscope and dynamic light scattering measurements showed that the nanoparticles were spherical in shape and the particle size was in the range of 80⁻130 nm. Antimicrobial experiments were performed with two types of bacteria, Gram-negative (Escherichia coli, ATCC 8739) and Gram-positive (Staphylococcus aureus, ATCC 6538). The as-synthesized cationic nanoparticles exhibited effective antimicrobial activities on Escherichia coli and Staphylococcus aureus with the minimal inhibitory concentrations at 8 μg/mL and 4 μg/mL, respectively. The mechanism of action of the resulted nanoparticles against these bacteria was revealed by the scanning electron microscopic observation. In addition, the films consisting of latex nanoparticles are non-leaching antimicrobial materials with excellent antimicrobial activity, which indicates the polymers could preserve their antimicrobial activity for long-term effectiveness.
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Affiliation(s)
- Yang Li
- Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
| | - Pingxiong Cai
- College of Petroleum and Chemical Engineering, Qinzhou University, Qinzhou 535006, China.
| | - Zhang-Fa Tong
- Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
| | - Yuanfeng Pan
- Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
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Yadav S, Deka SR, Tiwari K, Sharma AK, Kumar P. Multi-Stimuli Responsive Self-Assembled Nanostructures Useful for Colon Drug Delivery. IEEE Trans Nanobioscience 2017; 16:764-772. [DOI: 10.1109/tnb.2017.2757958] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Singh AK, Prasad S, Kumar B, Kumar S, Anand A, Kamble SS, Sharma SK, Gautam HK. Antimicrobial Efficacy of Synthetic Pyranochromenones and (Coumarinyloxy)acetamides. Indian J Microbiol 2017; 57:499-502. [PMID: 29151652 PMCID: PMC5671431 DOI: 10.1007/s12088-017-0675-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/19/2017] [Indexed: 01/21/2023] Open
Abstract
Four (1, 2, 4 and 6) synthetic quaternary ammonium derivatives of pyranochromenones and (coumarinyloxy)acetamides were synthesized and investigated for their antimicrobial efficacy on MRSA (Methicillin-resistant Staphylococcus aureus), and multi-drug resistant Pseudomonas aeruginosa, Salmonella enteritidis and Mycobacterium tuberculosis H37Rv strain. One of the four compounds screened i.e. N,N,N-triethyl-10-((4,8,8-trimethyl-2-oxo-2,6,7,8-tetrahydropyrano[3,2-g]chromen-10-yl)oxy)decan-1-aminium bromide (1), demonstrated significant activity against S. aureus, P. aeruginosa and M. tuberculosis with MIC value of 16, 35, and 15.62 µg/ml respectively. The cytotoxicity evaluation of compound 1 on A549 cell lines showed it to be a safe antimicrobial molecule, TEM study suggested that the compound led to the rupture of the bacterial cell walls.
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Affiliation(s)
| | - Suchita Prasad
- Department of Chemistry, University of Delhi, Delhi, 110007 India
| | - Bipul Kumar
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, Delhi, 110025 India
| | - Shiv Kumar
- Department of Chemistry, University of Delhi, Delhi, 110007 India
| | - Amitesh Anand
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, Delhi, 110025 India
| | - Shashank S. Kamble
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, Delhi, 110025 India
| | - Sunil K. Sharma
- Department of Chemistry, University of Delhi, Delhi, 110007 India
| | - Hemant K. Gautam
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, Delhi, 110025 India
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Ahmadi Z, Verma G, Jha D, Gautam HK, Kumar P. Evaluation of antimicrobial activity and cytotoxicity of pegylated aminoglycosides. J BIOACT COMPAT POL 2017. [DOI: 10.1177/0883911517739318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zeba Ahmadi
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Geeta Verma
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Diksha Jha
- Microbial Technology Laboratory, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Hemant Kumar Gautam
- Microbial Technology Laboratory, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Pradeep Kumar
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
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Sharma AK, Prasad S, Sharma SK. Synthesis and characterization of novel benzoxazine-based arylidinyl succinimide derivatives. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1354027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Atul K. Sharma
- Department of Chemistry, University of Delhi, Delhi, India
| | - Suchita Prasad
- Department of Chemistry, University of Delhi, Delhi, India
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Shivhare K, Garg C, Priyam A, Gupta A, Sharma AK, Kumar P. Enzyme sensitive smart inulin-dehydropeptide conjugate self-assembles into nanostructures useful for targeted delivery of ornidazole. Int J Biol Macromol 2017; 106:775-783. [PMID: 28818724 DOI: 10.1016/j.ijbiomac.2017.08.071] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 01/14/2023]
Abstract
Molecular self-assembly of biodegradable amphiphilic polymers allows rational design of biocompatible nanomaterials for drug delivery. Use of substituted polysaccharides for such applications offers the ease of design and synthesis, and provides higher biofunctionality and biocompatibility to nanomaterials. The present work focuses on the synthesis, characterization and potential biomedical applications of self-assembled polysaccharide-based materials. We demonstrated that the synthesized amphiphilic inulin self-assembled in aqueous medium into nanostructures with average size in the range of 146-486nm and encapsulated hydrophobic therapeutic molecule, ornidazole. Hydrophophic dehydropeptide was conjugated with inulin via a biocompatible ester linkage. Dehydrophenylalanine, an unusual amino acid, was incorporated in the peptide to make it stable at a broader range of pH as well as against proteases. The resulting core-shell type of nanostructures could encapsulate ornidazole in the hydrophobic core and released it in a controlled fashion. By taking the advantage of inulin, which gets degraded in the colon by colonic bacteria, the effect of enzyme, inulinase, present in the microflora of the large intestine, on inulin-peptide degradation followed by drug release has been studied. Altogether, small peptide conjugated to inulin offers novel scaffold for the future design of nanostructures with potential applications in the field of targeted drug delivery.
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Affiliation(s)
- Kriti Shivhare
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India
| | - Charu Garg
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India; Department of Chemistry, Dyal Singh College, University of Delhi, Lodhi Road, New Delhi 110003, India
| | - Ayushi Priyam
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India
| | - Alka Gupta
- Department of Chemistry, Dyal Singh College, University of Delhi, Lodhi Road, New Delhi 110003, India
| | - Ashwani Kumar Sharma
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India.
| | - Pradeep Kumar
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India.
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Prasad S, Kumar B, Kumar S, Chand K, Kamble SS, Gautam HK, Sharma SK. Acetamide Derivatives of Chromen-2-ones as Potent Cholinesterase Inhibitors. Arch Pharm (Weinheim) 2017; 350. [PMID: 28699213 DOI: 10.1002/ardp.201700076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 06/06/2017] [Accepted: 06/13/2017] [Indexed: 12/13/2022]
Abstract
Alzheimer's disease (AD), a neurodegenerative disorder, is a serious medical issue worldwide with drastic social consequences. Inhibition of cholinesterase is one of the rational and effective approaches to retard the symptoms of AD and, hence, consistent efforts are being made to develop efficient anti-cholinesterase agents. In pursuit of this, a series of 19 acetamide derivatives of chromen-2-ones were synthesized and evaluated for their acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory potential. All the synthesized compounds exhibited significant anti-AChE and anti-BChE activity, with IC50 values in the range of 0.24-10.19 μM and 0.64-30.08 μM, respectively, using donepezil hydrochloride as the standard. Out of 19 compounds screened, 3 compounds, viz. 22, 40, and 43, caused 50% inhibition of AChE at 0.24, 0.25, and 0.25 μM, respectively. A kinetic study revealed them to be mixed-type inhibitors, binding with both the CAS and PAS sites of AChE. The above-selected compounds were found to be effective inhibitors of AChE-induced and self-mediated Aβ1-42 aggregation. ADMET predictions demonstrated that these compounds may possess suitable blood-brain barrier (BBB) permeability. Hemolytic assay results revealed that these compounds did not lyse human RBCs up to a thousand times of their IC50 value. MTT assays performed for the shortlisted compounds showed them to be negligibly toxic after 24 h of treatment with the SH-SY5Y neuroblastoma cells. These results provide insights for further optimization of the scaffolds for designing the next generation of compounds as lead cholinesterase inhibitors.
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Affiliation(s)
- Suchita Prasad
- Department of Chemistry, University of Delhi, Delhi, India
| | - Bipul Kumar
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Delhi, India
| | - Shiv Kumar
- Department of Chemistry, University of Delhi, Delhi, India
| | - Karam Chand
- Department of Chemistry, University of Delhi, Delhi, India.,Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Shashank S Kamble
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Delhi, India
| | - Hemant K Gautam
- CSIR-Institute of Genomics and Integrative Biology, Sukhdev Vihar, Delhi, India
| | - Sunil K Sharma
- Department of Chemistry, University of Delhi, Delhi, India
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Jha D, Thiruveedula PK, Pathak R, Kumar B, Gautam HK, Agnihotri S, Sharma AK, Kumar P. Multifunctional biosynthesized silver nanoparticles exhibiting excellent antimicrobial potential against multi-drug resistant microbes along with remarkable anticancerous properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:659-669. [PMID: 28866213 DOI: 10.1016/j.msec.2017.07.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 06/02/2017] [Accepted: 07/09/2017] [Indexed: 10/19/2022]
Abstract
This study demonstrates the therapeutic potential of silver nanoparticles (AgNPs), which were biosynthesized using the extracts of Citrus maxima plant. Characterization through UV-Vis spectrophotometry, Dynamic Light Scattering (DLS), Fourier Transform Infrared spectroscopy (FTIR), X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) confirmed the formation of AgNps in nano-size range. These nanoparticles exhibited enhanced antioxidative activity and showed commendable antimicrobial activity against wide range of microbes including multi-drug resistant bacteria that were later confirmed by TEM. These particles exhibited minimal toxicity when cytotoxicity study was performed on normal human lung fibroblast cell line as well as human red blood cells. It was quite noteworthy that these particles showed remarkable cytotoxicity on human fibrosarcoma and mouse melanoma cell line (B16-F10). Additionally, the apoptotic topographies of B16-F10 cells treated with AgNps were confirmed by using acridine orange and ethidium bromide dual dye staining, caspase-3 assay, DNA fragmentation assay followed by cell cycle analysis using fluorescence-activated cell sorting. Taken together, these results advocate promising potential of the biosynthesized AgNps for their use in therapeutic applications.
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Affiliation(s)
- Diksha Jha
- Microbial Biotechnology Laboratory, CSIR- Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, Delhi 110025, India
| | - Prasanna Kumar Thiruveedula
- Microbial Biotechnology Laboratory, CSIR- Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, Delhi 110025, India
| | - Rajiv Pathak
- Microbial Biotechnology Laboratory, CSIR- Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, Delhi 110025, India
| | - Bipul Kumar
- Microbial Biotechnology Laboratory, CSIR- Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, Delhi 110025, India
| | - Hemant K Gautam
- Microbial Biotechnology Laboratory, CSIR- Institute of Genomics and Integrative Biology, Sukhdev Vihar, Mathura Road, Delhi 110025, India.
| | - Shrish Agnihotri
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India
| | - Ashwani Kumar Sharma
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India
| | - Pradeep Kumar
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India.
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28
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Enhanced antimicrobial activity of amphiphilic cationic polymers against a broad range of bacterial strains and skin microbes. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4106-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Bansal R, Kumar P. Engineered polymeric amphiphiles self-assembling into nanostructures and acting as efficient gene and drug carriers. J Biomater Appl 2017; 32:40-53. [PMID: 28532300 DOI: 10.1177/0885328217710125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nonviral gene delivery systems are finding widespread use due to their safety, rapid and economical production, and ease of modification. In this work, series of N-alkyl-substituted linear polyethylenimine (CP) polymers have been synthesized, characterized, and investigated about how degree of substitution (hydrophobic-hydrophilic balance) (i.e. N-alkylation) influenced the transfection efficiency. Mobility shift assay demonstrated efficient binding of plasmid DNA (pDNA). Transfection efficiency and cytotoxicity of CP polymers were assessed in vitro, which revealed that all the formulations exhibited higher transfection activity than linear polyethylenimine (lPEI) and commercial transfection reagents, Lipofectamine and Superfect, with negligible toxicity (MTT assay). In the projected series, one of the formulations, CP-3-pDNA complex, displayed the highest transfection efficiency (∼1.6-12 folds vs. lPEI and commercial transfection reagents) and effectively carried GFP-specific siRNA inside the cells as monitored by measuring the suppression in the gene expression of the target gene. Further, flow cytometry experiments confirmed that CP-3-pDNA complex transfected the highest number of cells. Besides, CP-3 was also evaluated in terms of its capability to entrap hydrophobic drug molecules. The results showed that it efficiently encapsulated an anti-cancer drug, etoposide, and released it in a controlled fashion over a period of time. Altogether, the data support that CP-3 is a promising vector for nucleic acid as well as hydrophobic drug delivery.
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Affiliation(s)
- Ruby Bansal
- CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Pradeep Kumar
- CSIR-Institute of Genomics and Integrative Biology, Delhi, India
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Deka SR, Yadav S, Kumar D, Garg S, Mahato M, Sharma AK. Self-assembled dehydropeptide nano carriers for delivery of ornidazole and curcumin. Colloids Surf B Biointerfaces 2017; 155:332-340. [PMID: 28454062 DOI: 10.1016/j.colsurfb.2017.04.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 04/13/2017] [Accepted: 04/17/2017] [Indexed: 02/01/2023]
Abstract
In the recent studies, it has been demonstrated that incorporation of unnatural amino acid, α,β-dehydrophenylalanine, in small peptides results in stable self-assembled nanostructures with different sizes and shapes. Here, we have replaced the natural amino acid, phenylalanine, from our earlier reported work on self-assembled peptide, Boc-Pro-Phe-Gly-OMe, with a constrained dehydro amino acid, α,β-dehydrophenylalanine, to study its influence on self-assembled nanostructures. Dehydrotripeptide, Boc-Pro-ΔPhe-Gly-OMe, self-assembled into nanostructures in aqueous solutions and formed hydrophobic matrix with improved encapsulation efficiency of hydrophobic molecules. The hydrodynamic size of peptide nanostructures from DLS study was found to be ∼257nm. The morphology and size of the loaded nanoparticles were also determined by TEM. To improve aqueous dispersibility the projected nanostructures for efficient use in drug delivery, self-assembled dehydropeptide nano carriers were further stabilized with Vitamin-E-TPGS. The final complex drug nanoparticles provided controlled drug release. These findings demonstrated that incorporation of constrained dehydro amino acids in peptides have the potential to construct stable nanostructures for development of nano materials with controlled drug release.
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Affiliation(s)
- Smriti Rekha Deka
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics Integrative Biology, Mall Road, Delhi, 110 007, India
| | - Santosh Yadav
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics Integrative Biology, Mall Road, Delhi, 110 007, India; Academy of Scientific and Innovative Research, New Delhi, India
| | - Dheeresh Kumar
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics Integrative Biology, Mall Road, Delhi, 110 007, India
| | - Sumit Garg
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics Integrative Biology, Mall Road, Delhi, 110 007, India
| | - Manohar Mahato
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics Integrative Biology, Mall Road, Delhi, 110 007, India
| | - Ashwani Kumar Sharma
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics Integrative Biology, Mall Road, Delhi, 110 007, India.
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Goel R, Sharma AK, Gupta A. Self-assembled amphiphilic mixed α/β-tetrapeptoid nanostructures as promising drug delivery vehicles. NEW J CHEM 2017. [DOI: 10.1039/c6nj03281h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tetrapeptoid nanostructures have been prepared and their potential used for delivering hydrophobic drug molecules.
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Affiliation(s)
- Rahul Goel
- Department of Chemistry
- Dyal Singh College
- University of Delhi
- New Delhi-110003
- India
| | - Ashwani Kumar Sharma
- NAR Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Delhi-110007
- India
| | - Alka Gupta
- Department of Chemistry
- Dyal Singh College
- University of Delhi
- New Delhi-110003
- India
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32
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Synthesis and antibacterial activity screening of quaternary ammonium derivatives of triazolyl pyranochromenones. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1214-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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Yadav S, Deka SR, Jha D, Gautam HK, Sharma AK. Amphiphilic azobenzene-neomycin conjugate self-assembles into nanostructures and transports plasmid DNA efficiently into the mammalian cells. Colloids Surf B Biointerfaces 2016; 148:481-486. [DOI: 10.1016/j.colsurfb.2016.09.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 08/17/2016] [Accepted: 09/05/2016] [Indexed: 11/08/2022]
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34
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Kumar B, Mathur A, Pathak R, Sardana K, Gautam HK, Kumar P. Evaluation of antimicrobial efficacy of quaternized poly[bis(2-chloroethyl)ether-alt-1,3-bis[3-(dimethylamino)propyl]urea] against targeted pathogenic and multi-drug-resistant bacteria. J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911515627473] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Here, we have investigated in vitro antimicrobial efficacy of a quaternized cationic polymer, poly[bis(2-chloroethyl)ether- alt-1,3-bis[3-(dimethylamino)propyl]urea] (polyquaternium-2), against gram-positive as well as gram-negative bacteria along with several multi-drug-resistant bacterial strains. The antimicrobial efficacy of this polymer was first tested against some clinical pathogens followed by microorganisms isolated from acne lesions. Interestingly, polyquaternium-2 exhibited significant antimicrobial activity against methicillin-resistant Staphylococcus aureus, for which very limited drugs are available. Most importantly, the polymer displayed low haemolytic activity and non-toxic behaviour against mammalian cells. The results showed the promising potential of the projected polymer to be utilized as an antibacterial agent for various biomedical applications.
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Affiliation(s)
- Bipul Kumar
- Microbial Biotechnology Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Anurag Mathur
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
| | - Rajiv Pathak
- Microbial Biotechnology Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, India
| | - Kabir Sardana
- Lok Nayak Hospital, Maulana Azad Medical College, New Delhi, India
| | - Hemant K Gautam
- Microbial Biotechnology Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, India
| | - Pradeep Kumar
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi, India
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Reinhardt A, Neundorf I. Design and Application of Antimicrobial Peptide Conjugates. Int J Mol Sci 2016; 17:E701. [PMID: 27187357 PMCID: PMC4881524 DOI: 10.3390/ijms17050701] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/25/2016] [Accepted: 05/04/2016] [Indexed: 12/17/2022] Open
Abstract
Antimicrobial peptides (AMPs) are an interesting class of antibiotics characterized by their unique antibiotic activity and lower propensity for developing resistance compared to common antibiotics. They belong to the class of membrane-active peptides and usually act selectively against bacteria, fungi and protozoans. AMPs, but also peptide conjugates containing AMPs, have come more and more into the focus of research during the last few years. Within this article, recent work on AMP conjugates is reviewed. Different aspects will be highlighted as a combination of AMPs with antibiotics or organometallic compounds aiming to increase antibacterial activity or target selectivity, conjugation with photosensitizers for improving photodynamic therapy (PDT) or the attachment to particles, to name only a few. Owing to the enormous resonance of antimicrobial conjugates in the literature so far, this research topic seems to be very attractive to different scientific fields, like medicine, biology, biochemistry or chemistry.
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Affiliation(s)
- Andre Reinhardt
- Department of Chemistry, Institute of Biochemistry, University of Cologne, Zuelpicher Str. 47, D-50674 Cologne, Germany.
| | - Ines Neundorf
- Department of Chemistry, Institute of Biochemistry, University of Cologne, Zuelpicher Str. 47, D-50674 Cologne, Germany.
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Kumar S, Prasad S, Kumar B, Gautam HK, Sharma SK. Synthesis of novel triazolyl pyranochromen-2(1H)-ones and their antibacterial activity evaluation. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1549-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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37
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Kumar S, Sharma JG, Maji S, Malhotra BD. A biocompatible serine functionalized nanostructured zirconia based biosensing platform for non-invasive oral cancer detection. RSC Adv 2016. [DOI: 10.1039/c6ra07392a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic of captured antigen onto BSA/anti-CYFRA-21-1/serine/nZrO2/ITO immunoelectrode and its electrochemical response.
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Affiliation(s)
- Suveen Kumar
- Nanobioelectronics Laboratory
- Department of Biotechnology
- Delhi Technological University
- Delhi 110042
- India
| | - Jai Gopal Sharma
- Nanobioelectronics Laboratory
- Department of Biotechnology
- Delhi Technological University
- Delhi 110042
- India
| | - Sagar Maji
- Nanobioelectronics Laboratory
- Department of Biotechnology
- Delhi Technological University
- Delhi 110042
- India
| | - Bansi Dhar Malhotra
- Nanobioelectronics Laboratory
- Department of Biotechnology
- Delhi Technological University
- Delhi 110042
- India
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38
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Yadav S, Deka SR, Verma G, Sharma AK, Kumar P. Photoresponsive amphiphilic azobenzene–PEG self-assembles to form supramolecular nanostructures for drug delivery applications. RSC Adv 2016. [DOI: 10.1039/c5ra26658k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Self-assembled smart nanostructures have emerged as controlled and site-specific systems for drug delivery applications.
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Affiliation(s)
- Santosh Yadav
- Nucleic Acids Research Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Delhi 110007
- India
- Academy of Scientific and Innovative Research
| | - Smriti Rekha Deka
- Nucleic Acids Research Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Delhi 110007
- India
| | - Geeta Verma
- Nucleic Acids Research Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Delhi 110007
- India
| | - Ashwani Kumar Sharma
- Nucleic Acids Research Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Delhi 110007
- India
| | - Pradeep Kumar
- Nucleic Acids Research Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Delhi 110007
- India
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39
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Duan Z, Gao YJ, Qiao ZY, Qiao S, Wang Y, Hou C, Wang L, Wang H. pH-Sensitive polymer assisted self-aggregation of bis(pyrene) in living cells in situ with turn-on fluorescence. NANOTECHNOLOGY 2015; 26:355703. [PMID: 26245834 DOI: 10.1088/0957-4484/26/35/355703] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Supramolecular self-assemblies with various nanostructures in organic and aqueous solutions have been prepared with desired functions. However, in situ construction of self-assembled superstructures in physiological conditions to achieve expected biological functions remains a challenge. Here, we report a supramolecular system to realize the in situ formation of nanoaggregates in living cells. The bis(pyrene) monomers were dispersed inside of hydrophobic domains of pH-sensitive polymeric micelles and delivered to the lysosomes of cells. In the acidic lysosomes, the bis(pyrene) monomers were released and self-aggregated with turn-on fluorescence. We envision this strategy for in situ construction of supramolecular nanostructures in living cells will pave the way for molecular diagnostics in the future.
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Affiliation(s)
- Zhongyu Duan
- School of Chemical Engineering & Technology, Hebei University of Technology, No. 8 Guangrongdao, Hongqiao District, Tianjin, 300130, People's Republic of China
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40
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Misra SK, Ye M, Kim S, Pan D. Defined nanoscale chemistry influences delivery of peptido-toxins for cancer therapy. PLoS One 2015; 10:e0125908. [PMID: 26030072 PMCID: PMC4452514 DOI: 10.1371/journal.pone.0125908] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 03/23/2015] [Indexed: 11/18/2022] Open
Abstract
We present an in-silico-to-in-vitro approach to develop well-defined, self-assembled, rigid-cored polymeric (Polybee) nano-architecture for controlled delivery of a key component of bee venom, melittin. A competitive formulation with lipid-encapsulated (Lipobee) rigid cored micelle is also synthesized. In a series of sequential experiments, we show how nanoscale chemistry influences the delivery of venom toxins for cancer regression and help evade systemic disintegrity and cellular noxiousness. A relatively weaker association of melittin in the case of lipid-based nanoparticles is compared to the polymeric particles revealed by energy minimization and docking studies, which are supported by biophysical studies. For the first time, the authors' experiment results indicate that melittin can play a significant role in DNA association-dissociation processes, which may be a plausible route for their anticancer activity.
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Affiliation(s)
- Santosh K. Misra
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Beckman Institute of Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Carle Foundation Hospital, Urbana, IL, 61801, United States of America
| | - Mao Ye
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Beckman Institute of Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Carle Foundation Hospital, Urbana, IL, 61801, United States of America
| | - Sumin Kim
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Beckman Institute of Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Carle Foundation Hospital, Urbana, IL, 61801, United States of America
| | - Dipanjan Pan
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Beckman Institute of Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
- Carle Foundation Hospital, Urbana, IL, 61801, United States of America
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Agnihotri S, Pathak R, Jha D, Roy I, Gautam HK, Sharma AK, Kumar P. Synthesis and antimicrobial activity of aminoglycoside-conjugated silica nanoparticles against clinical and resistant bacteria. NEW J CHEM 2015. [DOI: 10.1039/c5nj00007f] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Synthesized aminoglycoside-conjugated silica nanoparticles exhibit enhanced antimicrobial activity against clinical and resistant bacteria with minimal cytotoxicity.
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Affiliation(s)
- Shrish Agnihotri
- Nucleic Acids Research Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Delhi-110007
- India
- Department of Chemistry
| | - Rajiv Pathak
- Microbial Biotechnology Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Sukhdev Vihar
- New Delhi-110025
- India
| | - Diksha Jha
- Microbial Biotechnology Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Sukhdev Vihar
- New Delhi-110025
- India
| | - Indrajit Roy
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Hemant K. Gautam
- Microbial Biotechnology Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Sukhdev Vihar
- New Delhi-110025
- India
| | - Ashwani K. Sharma
- Nucleic Acids Research Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Delhi-110007
- India
| | - Pradeep Kumar
- Nucleic Acids Research Laboratory
- CSIR-Institute of Genomics and Integrative Biology
- Delhi-110007
- India
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42
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Quaternary ammonium and amido derivatives of pyranochromenones and chromenones: synthesis and antimicrobial activity evaluation. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1294-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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