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Thi Nguyen NH, Kim JH, Lee SM, Cho BK, Kim YH, Min J. Inhibition of tau phosphorylation and Aβ accumulation by S. cerevisiae-derived vacuoles in LPS-induced SH-SY5Y cells. J Biotechnol 2023; 376:45-52. [PMID: 37777088 DOI: 10.1016/j.jbiotec.2023.09.005] [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: 04/27/2023] [Revised: 08/18/2023] [Accepted: 09/25/2023] [Indexed: 10/02/2023]
Abstract
Neurodegenerative diseases, such as Alzheimer's disease (AD), are characterized by the accumulation of intracellular tau and amyloid beta (Aβ) proteins, which lead to neuroinflammation and neuronal apoptosis. In this study, we investigated the potential of a bioengineered vacuoles derived from Saccharomyces cerevisiae-derived vacuoles to treat neuroinflammation and protein accumulation in AD. The yeast-derived vacuole is a small organelle that achieves efficient degradation by utilizing a diverse array of hydrolytic enzymes. These hydrolytic enzymes break down and process proteins into smaller fragments. We found that vacuoles treatment significantly reduced LPS-primed cell apoptosis and diminished Aβ42 secretion in vitro, potentially through the inhibition of the NF-kB p65 signaling pathway. Additionally, vacuole pre-treatment down-regulated NF-κB translocation and reduced phosphorylated tau levels in LPS-induced SH-SY5Y cells. Our results suggest that the vacuoles have potential as a therapeutic agent for neurodegenerative diseases. The vacuole's small size and diverse hydrolytic enzymes make it a promising drug delivery system for targeting intracellular proteins. Future studies may explore the use of vacuoles in animal models of AD to determine their therapeutic potential.
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Affiliation(s)
- Ngoc-Han Thi Nguyen
- School of Chemical Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-Gu, Jeonju 54896, South Korea
| | - Ji Hun Kim
- Department of Biological Sciences, Korea Advanced institute of Science and Technology, 291 Daehak-ro, Yuseong-Gu, Daejeon 34141, South Korea
| | - Su-Min Lee
- Graduate School of Semiconductor and Chemical Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-Gu, Jeonju 54896, South Korea
| | - Byung-Kwan Cho
- Department of Biological Sciences, Korea Advanced institute of Science and Technology, 291 Daehak-ro, Yuseong-Gu, Daejeon 34141, South Korea.
| | - Yang-Hoon Kim
- School of Biological Sciences, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju 28644, South Korea.
| | - Jiho Min
- School of Chemical Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-Gu, Jeonju 54896, South Korea; Graduate School of Semiconductor and Chemical Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-Gu, Jeonju 54896, South Korea.
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2
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Halder S, Paul M, Dyagala S, Aggrawal R, Aswal VK, Biswas S, Saha SK. Role of Gemini Surfactants with Variable Spacers and SiO 2 Nanoparticles in ct-DNA Compaction and Applications toward In Vitro/ In Vivo Gene Delivery. ACS APPLIED BIO MATERIALS 2023. [PMID: 37277159 DOI: 10.1021/acsabm.3c00256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Compaction of calf thymus DNA (ct-DNA) by two cationic gemini surfactants, 12-4-12 and 12-8-12, in the absence and presence of negatively charged SiO2 nanoparticles (NPs) (∼100 nm) has been explored using various techniques. 12-8-12 having a longer hydrophobic spacer induces a greater extent of ct-DNA compaction than 12-4-12, which becomes more efficient with SiO2 NPs. While 50% ct-DNA compaction in the presence of SiO2 NPs occurs at ∼77 nM of 12-8-12 and ∼130 nM of 12-4-12, but a conventional counterpart surfactant, DTAB, does it at its concentration as high as ∼7 μM. Time-resolved fluorescence anisotropy measurements show changes in the rotational dynamics of a fluorescent probe, DAPI, and helix segments in the condensed DNA. Fluorescence lifetime data and ethidium bromide exclusion assays reveal the binding sites of surfactants to ct-DNA. 12-8-12 with SiO2 NPs has shown the highest cell viability (≥90%) and least cell death in the human embryonic kidney (HEK) 293 cell lines in contrast to the cell viability of ≤80% for DTAB. These results show that 12-8-12 with SiO2 NPs has the highest time and dose-dependent cytotoxicity compared to 12-8-12 and 12-4-12 in the murine breast cancer 4T1 cell line. Fluorescence microscopy and flow cytometry are performed for in vitro cellular uptake of YOYO-1-labeled ct-DNA with surfactants and SiO2 NPs using 4T1 cells after 3 and 6 h incubations. The in vivo tumor accumulation studies are carried out using a real-time in vivo imaging system after intravenous injection of the samples into 4T1 tumor-bearing mice. 12-8-12 with SiO2 has delivered the highest amount of ct-DNA in cells and tumors in a time-dependent manner. Thus, the application of a gemini surfactant with a hydrophobic spacer and SiO2 NPs in compacting and delivering ct-DNA to the tumor is proven, warranting its further exploration in nucleic acid therapy for cancer treatment.
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Affiliation(s)
- Sayantan Halder
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Milan Paul
- Department of Pharmacy, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Shalini Dyagala
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Rishika Aggrawal
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai, Maharashtra 400085, India
| | - Swati Biswas
- Department of Pharmacy, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Subit K Saha
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
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Pandian SRK, Vijayakumar KK, Murugesan S, Kunjiappan S. Liposomes: An emerging carrier for targeting Alzheimer's and Parkinson's diseases. Heliyon 2022; 8:e09575. [PMID: 35706935 PMCID: PMC9189891 DOI: 10.1016/j.heliyon.2022.e09575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/19/2022] [Accepted: 05/23/2022] [Indexed: 11/19/2022] Open
Abstract
The function of the brain can be affected by various factors that include infection, tumor, and stroke. The major disorders reported with altered brain function are Alzheimer's disease (AD), Parkinson's disease (PD), dementia, brain cancer, seizures, mental disorders, and other movement disorders. The major barrier in treating CNS disease is the blood-brain barrier (BBB), which protects the brain from toxic molecules, and the cerebrospinal fluid (CSF) barrier, which separates blood from CSF. Brain endothelial cells and perivascular elements provide an integrated cellular barrier, the BBB, which hamper the invasion of molecules from the blood to the brain. Even though many drugs are available to treat neurological disorders, it fails to reach the desired site with the required concentration. In this purview, liposomes can carry required concentrations of molecules intracellular by diverse routes such as carrier-mediated transport and receptor-mediated transcytosis. Surface modification of liposomes enables them to deliver drugs to various brain cells, including neurons, astrocytes, oligodendrocytes, and microglia. The research studies supported the role of liposomes in delivering drugs across BBB and in reducing the pathogenesis of AD and PD. The liposomes were surface-functionalized with various molecules to reach the cells intricated with the AD or PD pathogenesis. The targeted and sustained delivery of drugs by liposomes is disturbed due to the antibody formation, renal clearance, accelerated blood clearance, and complement activation-related pseudoallergy (CARPA). Hence, this review will focus on the characteristics, surface functionalization, drug loading, and biodistribution of liposomes respective to AD and PD. In addition, the alternative strategies to overcome immunogenicity are discussed briefly.
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Affiliation(s)
- Sureshbabu Ram Kumar Pandian
- Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, 626126, Tamilnadu, India
- Corresponding author.
| | - Kevin Kumar Vijayakumar
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamilnadu, India
| | - Sankaranarayanan Murugesan
- Medicinal Chemistry Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science, Pilani Campus, Vidya Vihar, Pilani, 333031, Rajasthan, India
| | - Selvaraj Kunjiappan
- Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, 626126, Tamilnadu, India
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Mezei A, Pons R. MWNTs or PEG as Stability Enhancers for DNA-Cationic Surfactant Gel Particles. Int J Mol Sci 2021; 22:ijms22168801. [PMID: 34445500 PMCID: PMC8395904 DOI: 10.3390/ijms22168801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 11/25/2022] Open
Abstract
Cationic surfactants interact with DNA (Deoxyribonucleic acid), forming surfactant-DNA complexes that offer particularly efficient control for encapsulation and release of DNA from DNA gel particles. In the present work, DNA-based particles were prepared using CTAB (Cetyltrimethylammonium bromide) as the cationic surfactant and modified using two different additives: (Multi-Walled Carbon Nanotubes) MWNT or PEG (Poly Ethylene Glycol). The use of both additives to form composites increased the stability of the gel particles. The stability was monitored by the release of DNA and CTAB in different pH solutions. However, not much is known about the influence of pH on DNA–surfactant interaction and the release of DNA and surfactant from gel particles. It was observed that the solubilization of DNA occurs only in very acid media, while that of CTAB does not depend on pH and gets to a plateau after about 8 h. Within 2 h in contact with a pH = 2 solution, about 1% DNA and CTAB was released. Complete destruction for the gel particles was observed in pH = 2 solution after 17 days for PEG and 20 days for MWNT. The composite particles show a considerably enlarged sustained release span compared to the unmodified ones. The dehydration-rehydration studies show that the structure of the composite gel particles, as determined from SAXS (Small-Angle-X-Ray-Scattering) experiments, is similar to that of the unmodified ones. These studies will allow a better knowledge of these particles’ formation and evolution in view of possible applications in drug delivery and release.
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Andrzejewska W, Wilkowska M, Skrzypczak A, Kozak M. Ammonium Gemini Surfactants Form Complexes with Model Oligomers of siRNA and dsDNA. Int J Mol Sci 2019; 20:ijms20225546. [PMID: 31703275 PMCID: PMC6887939 DOI: 10.3390/ijms20225546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 10/30/2019] [Accepted: 11/04/2019] [Indexed: 02/07/2023] Open
Abstract
Dimeric cationic surfactants (gemini-type) are a group of amphiphilic compounds with potential use in gene therapy as effective carriers for nucleic acid transfection (i.e., siRNA, DNA, and plasmid DNA). Our studies have shown the formation of lipoplexes composed of alkanediyl-α,ω-bis[(oxymethyl)dimethyldodecylammonium] chlorides and selected 21-base-pair nucleic acid (dsDNA and siRNA) oligomers. To examine the structure and physicochemical properties of these systems, optical microscopy, circular dichroism spectroscopy (CD), small-angle X-ray scattering of synchrotron radiation (SR-SAXS), and agarose gel electrophoresis (AGE) were used. The lengths of spacer groups of the studied surfactants had a significant influence on the surfactants’ complexing properties. The lowest charge ratio (p/n) at which stable lipoplexes were observed was 1.5 and the most frequently occurring microstructure of these lipoplexes were cubic and micellar phases for dsDNA and siRNA, respectively. The cytotoxicity tests on HeLa cells indicated the non-toxic concentration of surfactants to be at approximately 10 µM. The dicationic gemini surfactants studied form complexes with siRNA and dsDNA oligomers; however, the complexation process is more effective towards siRNA. Therefore these systems could be applied as transfection systems for therapeutic nucleic acids.
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Affiliation(s)
- Weronika Andrzejewska
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland; (W.A.); (M.W.)
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland
| | - Michalina Wilkowska
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland; (W.A.); (M.W.)
| | - Andrzej Skrzypczak
- Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60-965 Poznań, Poland;
| | - Maciej Kozak
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland; (W.A.); (M.W.)
- Joint SAXS Laboratory, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
- Correspondence: ; Tel.: +48-61-829-5266
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Mayr J, Grijalvo S, Bachl J, Pons R, Eritja R, Díaz Díaz D. Transfection of Antisense Oligonucleotides Mediated by Cationic Vesicles Based on Non-Ionic Surfactant and Polycations Bearing Quaternary Ammonium Moieties. Int J Mol Sci 2017; 18:ijms18061139. [PMID: 28587106 PMCID: PMC5485963 DOI: 10.3390/ijms18061139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/09/2017] [Accepted: 05/22/2017] [Indexed: 11/16/2022] Open
Abstract
Three different ionene polymers with varying quaternary ammonium moieties were used as a proof of concept for the formulation of antisense oligonucleotides, which are capable of inhibiting Renilla luciferase messenger ribonucleic acid (mRNA). Cationic vesicles, consisting of cationic polymer, antisense oligonucleotide (Luc) and non-ionic surfactant polysorbate 80, were investigated regarding their ζ potential, cytotoxicity and transfection efficiency. Deoxyribonucleic acid- (DNA) forming complexes in the presence of cationic vesicles were also investigated in terms of small-angle X-ray scattering (SAXS). The studied cationic vesicles showed very little, if any, toxicity against HeLa cells. Transfection abilities proved to vary strongly depending on the present quaternary ammonium moiety.
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Affiliation(s)
- Judith Mayr
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, Regensburg 93053, Germany.
| | - Santiago Grijalvo
- Institute of Advanced Chemistry of Catalonia-Spanish National Research Council (IQAC-CSIC), Jordi Girona 18-26, Barcelona 08034, Spain.
- Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Jordi Girona 18-26, Barcelona 08034, Spain.
| | - Jürgen Bachl
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, Regensburg 93053, Germany.
| | - Ramon Pons
- Institute of Advanced Chemistry of Catalonia-Spanish National Research Council (IQAC-CSIC), Jordi Girona 18-26, Barcelona 08034, Spain.
| | - Ramon Eritja
- Institute of Advanced Chemistry of Catalonia-Spanish National Research Council (IQAC-CSIC), Jordi Girona 18-26, Barcelona 08034, Spain.
- Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Jordi Girona 18-26, Barcelona 08034, Spain.
| | - David Díaz Díaz
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, Regensburg 93053, Germany.
- Institute of Advanced Chemistry of Catalonia-Spanish National Research Council (IQAC-CSIC), Jordi Girona 18-26, Barcelona 08034, Spain.
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Andrzejewska W, Wilkowska M, Chrabąszczewska M, Kozak M. The study of complexation between dicationic surfactants and the DNA duplex using structural and spectroscopic methods. RSC Adv 2017. [DOI: 10.1039/c6ra24978g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Dicationic (also known as gemini or dimeric) bis-alkylimidazolium surfactants belong to a group of non-viral transfection systems proposed for the successful introduction of different types of nucleic acids (i.e., siRNA, DNA oligomers, and plasmid DNA) into living cells.
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Affiliation(s)
- W. Andrzejewska
- Department of Macromolecular Physics
- Faculty of Physics
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - M. Wilkowska
- Department of Macromolecular Physics
- Faculty of Physics
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - M. Chrabąszczewska
- Department of Macromolecular Physics
- Faculty of Physics
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - M. Kozak
- Department of Macromolecular Physics
- Faculty of Physics
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
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Tangso KJ, C D da Cunha PH, Spicer P, Li J, Boyd BJ. Antimicrobial Activity from Colistin-Heparin Lamellar-Phase Complexes for the Coating of Biomedical Devices. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31321-31329. [PMID: 27750410 DOI: 10.1021/acsami.6b10027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Infections arising in hospitalized patients, particularly those who have undergone surgery and are reliant on receiving treatment through biomedical devices, continue to be a rising concern. It is well-known that aqueous mixtures of oppositely charged surfactant and polymer molecules can self-assemble to form liquid crystalline structures, primarily via electrostatically driven interactions that have demonstrated great potential as tailored-release nanomaterials. Colistin is a re-emerging antibiotic used against multidrug-resistant Gram-negative bacteria. Its amphiphilic structure allows it to form micellar aggregates in solution. Thus, the aim of this study was to determine whether structured complexes form between colistin and negatively charged biopolymers, such as the highly sulfated anticoagulant, heparin. Cross-polarized light microscopy and synchrotron small-angle X-ray scattering were employed to visualize the appearance of birefringent structures and identify liquid crystalline structures, respectively, formed across the interface between solutions of colistin and heparin. A lamellar phase with a lattice parameter of ∼40 Å was formed upon contact between the oppositely charged solutions of colistin and heparin. In addition, in vitro release studies showed a slow release of colistin from the lamellar-phase gel complexes into the bulk media, and disk diffusion bioassays revealed antimicrobial activity against Pseudomonas aeruginosa. This system provides a novel, cost-effective, and simple approach to reducing the risk of infections by potentially applying the formulation as a coating for biomedical implants or tubing.
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Affiliation(s)
| | - Paulo Henrique C D da Cunha
- Universidade Estadual de Londrina , Rodovia Celso Garcia Cid, Pr 455 Km 380, Campus Universitário, Londrina, Paraná, Brazil
| | - Patrick Spicer
- School of Chemical Engineering, University of New South Wales , Sydney, NSW 2052, Australia
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Kumari R, Singh S, Monisha M, Bhowmick S, Roy A, Das N, Das P. Hierarchical coassembly of DNA-triptycene hybrid molecular building blocks and zinc protoporphyrin IX. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:697-707. [PMID: 27335759 PMCID: PMC4901925 DOI: 10.3762/bjnano.7.62] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/29/2016] [Indexed: 05/06/2023]
Abstract
Herein, we describe the successful construction of composite DNA nanostructures by the self-assembly of complementary symmetrical 2,6,14-triptycenetripropiolic acid (TPA)-DNA building blocks and zinc protoporphyrin IX (Zn PpIX). DNA-organic molecule scaffolds for the composite DNA nanostructure were constructed through covalent conjugation of TPA with 5'-C12-amine-terminated modified single strand DNA (ssDNA) and its complementary strand. The repeated covalent conjugation of TPA with DNA was confirmed by using denaturing polyacrylamide gel electrophoresis (PAGE), reverse-phase high-performance liquid chromatography (RP-HPLC) and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF). The biologically relevant photosensitizer Zn PpIX was used to direct the hybridization-mediated self-assembly of DNA-TPA molecular building blocks as well as a model guest molecule within the DNA-TPA supramolecular self-assembly. The formation of fiber-like composite DNA nanostructures was observed. Native PAGE, circular dichroism (CD) and atomic force microscopy (AFM) have been utilized for analyzing the formation of DNA nanofibers after the coassembly. Computational methods were applied to discern the theoretical dimension of the DNA-TPA molecular building block of the nanofibers. A notable change in photocatalytic efficiency of Zn PpIX was observed when it was inside the TPA-DNA scaffold. The significant increase in ROS generation by Zn PpIX when trapped in this biocompatible DNA-TPA hybrid nanofiber may be an effective tool to explore photodynamic therapy (PDT) applications as well as photocatalytic reactions.
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Affiliation(s)
- Rina Kumari
- Department of Chemistry, IIT Patna, Bihata 801118, India
| | - Sumit Singh
- Department of Chemistry, IIT Patna, Bihata 801118, India
| | - Mohan Monisha
- Department of Biotechnology, IIT Hyderabad, Hyderabad, 502205, India
| | | | - Anindya Roy
- Department of Biotechnology, IIT Hyderabad, Hyderabad, 502205, India
| | - Neeladri Das
- Department of Chemistry, IIT Patna, Bihata 801118, India
| | - Prolay Das
- Department of Chemistry, IIT Patna, Bihata 801118, India
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Liu B, Hoopes MI, Karttunen M. Molecular Dynamics Simulations of DPPC/CTAB Monolayers at the Air/Water Interface. J Phys Chem B 2014; 118:11723-37. [PMID: 25222268 DOI: 10.1021/jp5050892] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Bin Liu
- Department of Chemistry and
Waterloo Institute for Nanotechnology, University of Waterloo, 200 University
Avenue West, Waterloo, Ontario, Canada N2L 3G1
| | - Matthew I. Hoopes
- Department of Chemistry and
Waterloo Institute for Nanotechnology, University of Waterloo, 200 University
Avenue West, Waterloo, Ontario, Canada N2L 3G1
| | - Mikko Karttunen
- Department of Chemistry and
Waterloo Institute for Nanotechnology, University of Waterloo, 200 University
Avenue West, Waterloo, Ontario, Canada N2L 3G1
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Mezei A, Pons R. Release of DNA and surfactant from gel particles: the receptor solution effect and the dehydration-hydration aspects. Colloids Surf B Biointerfaces 2014; 123:279-85. [PMID: 25264282 DOI: 10.1016/j.colsurfb.2014.09.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 08/18/2014] [Accepted: 09/14/2014] [Indexed: 02/04/2023]
Abstract
DNA and cetyltrimethylammonium bromide (CTAB) have been used to prepare gel particles for controlled release studies. This article reports on the release of DNA and CTAB in four different solutions: in sodium bromide, in strong acid, pH 2 and pH 9 solutions for salmon testes DNA-CTAB gel particles. Also, compares results at extreme acid media and 10 mM NaBr solution with higher molecular weight DNA gel particles. The direct surfactant release was followed for the first time and shows the need of using biocompatible surfactants for the preparation of these gel particles. The release behavior depends on the receptor solution pH and the molecular weight of DNA. The first stage of the release corresponds to the so-called normal release profile and after this period, the release changed to a slow release profile. Also, the effect of dehydration and rehydration on the gel particles structure has been studied for the first time. The last process was observed visually and by SAXS measurements as a function of time. This process maintains the particle membrane integrity, structure and barrier function. The rehydration of dry gel particle in water occurs in only a few hours.
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Affiliation(s)
- Amalia Mezei
- Departament de Tecnologia Química i de Tensioactius, Institut de Química Avançada de Catalunya, IQAC-CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Ramon Pons
- Departament de Tecnologia Química i de Tensioactius, Institut de Química Avançada de Catalunya, IQAC-CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain.
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