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Mazurkiewicz E, Lamch Ł, Wilk KA, Obłąk E. Anti-adhesive, anti-biofilm and fungicidal action of newly synthesized gemini quaternary ammonium salts. Sci Rep 2024; 14:14110. [PMID: 38898117 PMCID: PMC11187217 DOI: 10.1038/s41598-024-64859-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 06/13/2024] [Indexed: 06/21/2024] Open
Abstract
Newly synthesized gemini quaternary ammonium salts (QAS) with different counterions (bromide, hydrogen chloride, methylcarbonate, acetate, lactate), chain lengths (C12, C14, C16) and methylene linker (3xCH2) were tested. Dihydrochlorides and dibromides with 12 carbon atoms in hydrophobic chains were characterized by the highest biological activity against planktonic forms of yeast and yeast-like fungi. The tested gemini surfactants also inhibited the production of filaments by C. albicans. Moreover, they reduced the adhesion of C. albicans cells to the surfaces of stainless steel, silicone and glass, and slightly to polystyrene. In particular, the gemini compounds with 16-carbon alkyl chains were most effective against biofilms. It was also found that the tested surfactants were not cytotoxic to yeast cells. Moreover, dimethylcarbonate (2xC12MeCO3G3) did not cause hemolysis of sheep erythrocytes. Dihydrochlorides, dilactate and diacetate showed no mutagenic potential.
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Affiliation(s)
- Edyta Mazurkiewicz
- Department of Physico-Chemistry of Microorganisms, Faculty of Biological Sciences, University of Wrocław, Przybyszewskiego 63/77, 51-148, Wrocław, Poland
| | - Łukasz Lamch
- Department of Engineering and Technology of Chemical Processes, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Kazimiera A Wilk
- Department of Engineering and Technology of Chemical Processes, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Ewa Obłąk
- Department of Physico-Chemistry of Microorganisms, Faculty of Biological Sciences, University of Wrocław, Przybyszewskiego 63/77, 51-148, Wrocław, Poland.
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Henderson RDE, Mei N, Xu Y, Gaikwad R, Wettig S, Leonenko Z. Nanoscale Structure of Lipid-Gemini Surfactant Mixed Monolayers Resolved with AFM and KPFM Microscopy. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:572. [PMID: 38607107 PMCID: PMC11013119 DOI: 10.3390/nano14070572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 03/18/2024] [Accepted: 03/20/2024] [Indexed: 04/13/2024]
Abstract
Drug delivery vehicles composed of lipids and gemini surfactants (GS) are promising in gene therapy. Tuning the composition and properties of the delivery vehicle is important for the efficient load and delivery of DNA fragments (genes). In this paper, we studied novel gene delivery systems composed of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), 1,2-dipalmitoyl-sn-3-phosphocholine (DPPC), and GS of the type N,N-bis(dimethylalkyl)-α,ω-alkanediammonium dibromide at different ratios. The nanoscale properties of the mixed DOPC-DPPC-GS monolayers on the surface of the gene delivery system were studied using atomic force microscopy (AFM) and Kelvin probe force microscopy (KPFM). We demonstrate that lipid-GS mixed monolayers result in the formation of nanoscale domains that vary in size, height, and electrical surface potential. We show that the presence of GS can impart significant changes to the domain topography and electrical surface potential compared to monolayers composed of lipids alone.
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Affiliation(s)
- Robert D. E. Henderson
- Department of Physics & Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (R.D.E.H.); (N.M.); (Y.X.)
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Nanqin Mei
- Department of Physics & Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (R.D.E.H.); (N.M.); (Y.X.)
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Yue Xu
- Department of Physics & Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (R.D.E.H.); (N.M.); (Y.X.)
| | - Ravi Gaikwad
- Department of Physics & Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (R.D.E.H.); (N.M.); (Y.X.)
| | - Shawn Wettig
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- School of Pharmacy, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Zoya Leonenko
- Department of Physics & Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, Canada; (R.D.E.H.); (N.M.); (Y.X.)
- Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
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3
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Ahmed T, Liu FCF, Wu XY. An update on strategies for optimizing polymer-lipid hybrid nanoparticle-mediated drug delivery: exploiting transformability and bioactivity of PLN and harnessing intracellular lipid transport mechanism. Expert Opin Drug Deliv 2024; 21:245-278. [PMID: 38344771 DOI: 10.1080/17425247.2024.2318459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/09/2024] [Indexed: 02/20/2024]
Abstract
INTRODUCTION Polymer-lipid hybrid nanoparticle (PLN) is an emerging nanoplatform with distinct properties and functionalities from other nanocarrier systems. PLN can be optimized to overcome various levels of drug delivery barriers to achieve desired therapeutic outcomes via rational selection of polymer and lipid combinations based on a thorough understanding of their properties and interactions with therapeutic agents and biological systems. AREAS COVERED This review provides an overview of PLN including the motive and history of PLN development, types of PLN, preparation methods, attestations of their versatility, and design strategies to circumvent various barriers for increasing drug delivery accuracy and efficiency. It also highlights recent advances in PLN design including: rationale selection of polymer and lipid components to achieve spatiotemporal drug targeting and multi-targeted cascade drug delivery; utilizing the intracellular lipid transport mechanism for active targeting to desired organelles; and harnessing bioreactive lipids and polymers to magnify therapeutic effects. EXPERT OPINION A thorough understanding of properties of PLN components and their biofate is important for enhancing disease site targeting, deep tumor tissue penetration, cellular uptake, and intracellular trafficking of PLN. For futuristic PLN development, active lipid transport and dual functions of lipids and polymers as both nanocarrier material and pharmacological agents can be further explored.
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Affiliation(s)
- Taksim Ahmed
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, Canada
| | - Fuh-Ching Franky Liu
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, Canada
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Dahal H, Roy S, Dey J, Bose Dasgupta S. Impact of the Hydrocarbon Chain Length of Biodegradable Ester-Bonded Cationic Gemini Surfactants on Self-Assembly, In Vitro Gene Transfection, Cytotoxicity, and Antimicrobial Activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:2242-2253. [PMID: 38221732 DOI: 10.1021/acs.langmuir.3c03290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Gemini surfactants, due to their unique structural features and enhanced properties compared to conventional surfactants, are becoming more popular in the domain of colloid and interface science, drug delivery, and gene delivery science. This distinct class of surfactants forms a wide range of self-assembled aggregates depending on their chemical structure and environmental conditions. The present work aims to develop Gemini with three distinct chain lengths linked through the ester group and quaternary nitrogen head groups that can bind DNA molecules and ultimately serve as vectors for DNA transfection. Thus, we synthesized three distinct cationic Gemini with 12, 14, and 16 carbons in their tails and studied the effect of the hydrocarbon chain length on their physicochemical properties and biological applications. The self-assembly of these Geminis in aqueous solution was investigated by a number of techniques, including surface tension, electrical conductivity, fluorescence probe, calorimetry, dynamic light scattering, and atomic force microscopy. All three Gemini were extremely surface active and self-assembled above a very low critical micelle concentration. Calorimetric studies suggested the formation of thermodynamically favorable aggregates in an aqueous medium. Chain length dependence was observed in the size as well as the morphology of the aggregates. These Gemini ions were found to bind DNA strongly, as indicated by the high binding constant values. In vitro gene transfection studies using the RAW 264.7 cell line suggested that all three cationic Gemini had transfection efficiencies comparable to that of commercial standard turbofectamine. MTT assay was also performed for concentration selection while using these Gemini as transfection vectors. Overall, it was observed that Gemini had very little cytotoxicity within the investigated concentration range, highlighting the significance of the ester link within the structure. When compared with known antimicrobials such as kanamycin and ampicillin, all three Gemini furnished excellent antimicrobial activity in both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) microorganisms.
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Affiliation(s)
- Homen Dahal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sadhana Roy
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Joykrishna Dey
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Somdeb Bose Dasgupta
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Kaukulis M, Rucins M, Lacis D, Plotniece A, Sobolev A. Development of Self-Assembling bis-1,4-Dihydropyridines: Detailed Studies of Bromination of Four Methyl Groups and Bromine Nucleophilic Substitution. Molecules 2023; 29:161. [PMID: 38202746 PMCID: PMC10779897 DOI: 10.3390/molecules29010161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 12/21/2023] [Accepted: 12/24/2023] [Indexed: 01/12/2024] Open
Abstract
One of the most important steps in the synthesis of 1,4-dihydropyridine (1,4-DHP) amphiphiles is the bromination of methyl groups in positions 2 and 6 of the entire ring. However, up to now, only N-bromosuccinimide was mainly used for bromination 1,4-DHPs. In this work, the synthesis of bis-1,4-DHP derivatives with ethyl and dodecyl ester groups attached to 1,4-DHP ring at positions 3 and 5 was performed by Hantzsch synthesis. The experimental studies were carried out to find out the best conditions and the agent for the tetra bromination of bis-1,4-DHP methyl groups at positions 2 and 6. Four different brominating agents were screened. The use of pyridinium bromide-perbromide in ethyl acetate was found to be optimal for the bromination of methyl groups. The bromination reaction was followed by the synthesis of cationic pyridine moiety containing amphiphilic bis-1,4-DHP derivatives. By nucleophilic substitution of bromine with various substituted pyridines, 12 new amphiphilic bis-1,4-DHP derivatives were obtained. Evaluation of self-assembling properties of tetracationic bis-1,4-dihydropyridine derivatives by dynamic light scattering (DLS) measurements was also performed.
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Affiliation(s)
- Martins Kaukulis
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia
| | - Martins Rucins
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
| | - Davis Lacis
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3, LV-1048 Riga, Latvia
| | - Aiva Plotniece
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Riga Stradiņš University, Konsula 21, LV-1007 Riga, Latvia
| | - Arkadij Sobolev
- Latvian Institute of Organic Synthesis, Aizkraukles Str. 21, LV-1006 Riga, Latvia; (M.R.); (D.L.); (A.P.); (A.S.)
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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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Massa M, Rivara M, Pertinhez TA, Compari C, Donofrio G, Cristofolini L, Orsi D, Franceschi V, Fisicaro E. Chemico-Physical Properties of Some 1,1'-Bis-alkyl-2,2'-hexane-1,6-diyl-bispyridinium Chlorides Hydrogenated and Partially Fluorinated for Gene Delivery. Molecules 2023; 28:molecules28083585. [PMID: 37110819 PMCID: PMC10145364 DOI: 10.3390/molecules28083585] [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: 03/24/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
The development of very efficient and safe non-viral vectors, constituted mainly by cationic lipids bearing multiple charges, is a landmark for in vivo gene-based medicine. To understand the effect of the hydrophobic chain's length, we here report the synthesis, and the chemico-physical and biological characterization, of a new term of the homologous series of hydrogenated gemini bispyridinium surfactants, the 1,1'-bis-dodecyl-2,2'-hexane-1,6-diyl-bispyridinium chloride (GP12_6). Moreover, we have collected and compared the thermodynamic micellization parameters (cmc, changes in enthalpy, free energy, and entropy of micellization) obtained by isothermal titration calorimetry (ITC) experiments for hydrogenated surfactants GP12_6 and GP16_6, and for the partially fluorinated ones, FGPn (where n is the spacer length). The data obtained for GP12_6 by EMSA, MTT, transient transfection assays, and AFM imaging show that in this class of compounds, the gene delivery ability strictly depends on the spacer length but barely on the hydrophobic tail length. CD spectra have been shown to be a useful tool to verify the formation of lipoplexes due to the presence of a "tail" in the 288-320 nm region attributed to a chiroptical feature named ψ-phase. Ellipsometric measurements suggest that FGP6 and FGP8 (showing a very interesting gene delivery activity, when formulated with DOPE) act in a very similar way, and dissimilar from FGP4, exactly as in the case of transfection, and confirm the hypothesis suggested by previously obtained thermodynamic data about the requirement of a proper length of the spacer to allow the molecule to form a sort of molecular tong able to intercalate DNA.
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Affiliation(s)
- Michele Massa
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, 00165 Rome, Italy
| | - Mirko Rivara
- Department Food and Drug, University of Parma, Parco Area delle Scienze, 27/A, 43124 Parma, Italy
| | - Thelma A Pertinhez
- Department of Medicine and Surgery, University of Parma, Via Volturno, 39, 43125 Parma, Italy
| | - Carlotta Compari
- Department Food and Drug, University of Parma, Parco Area delle Scienze, 27/A, 43124 Parma, Italy
| | - Gaetano Donofrio
- Department of Veterinary Sciences, University of Parma, Via del Taglio, 10, 43126 Parma, Italy
| | - Luigi Cristofolini
- Department of Mathematical, Physical and Computer Sciences, University of Parma, Parco Area delle Scienze 7/a, 43124 Parma, Italy
| | - Davide Orsi
- Department of Mathematical, Physical and Computer Sciences, University of Parma, Parco Area delle Scienze 7/a, 43124 Parma, Italy
| | - Valentina Franceschi
- Department of Veterinary Sciences, University of Parma, Via del Taglio, 10, 43126 Parma, Italy
| | - Emilia Fisicaro
- Department Food and Drug, University of Parma, Parco Area delle Scienze, 27/A, 43124 Parma, Italy
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8
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Hu D, Wang R, Liu B, Bai X, Zhu L. A rigid double‐tailed surfactant preparation method and its application in clean fracturing fluid. J SURFACTANTS DETERG 2023. [DOI: 10.1002/jsde.12659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dengping Hu
- Yanchang Gas Field Gas Production Plant No. 4, Shaanxi Yanchang Petroleum (Group) Co., Ltd. Fuchuan China
| | - Rungang Wang
- Yanchang Gas Field Gas Production Plant No. 4, Shaanxi Yanchang Petroleum (Group) Co., Ltd. Fuchuan China
| | - Boying Liu
- 7th Oil Extraction Plant PetroChina Changqing Oilfield Company Gaoling China
| | - Xingjia Bai
- Yanchang Gas Field Gas Production Plant No. 4, Shaanxi Yanchang Petroleum (Group) Co., Ltd. Fuchuan China
| | - Lin Zhu
- College of Chemistry & Pharmacy Northwest A&F University Yangling China
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9
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Fabrication of Encapsulated Gemini Surfactants. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196664. [PMID: 36235201 PMCID: PMC9573393 DOI: 10.3390/molecules27196664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/23/2022] [Accepted: 09/27/2022] [Indexed: 11/07/2022]
Abstract
(1) Background: Encapsulation of surfactants is an innovative approach that allows not only protection of the active substance, but also its controlled and gradual release. This is primarily used to protect metallic surfaces against corrosion or to create biologically active surfaces. Gemini surfactants are known for their excellent anticorrosion, antimicrobial and surface properties; (2) Methods: In this study, we present an efficient methods of preparation of encapsulated gemini surfactants in form of alginate and gelatin capsules; (3) Results: The analysis of infrared spectra and images of the scanning electron microscope confirm the effectiveness of encapsulation; (4) Conclusions: Gemini surfactants in encapsulated form are promising candidates for corrosion inhibitors and antimicrobials with the possibility of protecting the active substance against environmental factors and the possibility of controlled outflow.
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10
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Physico-chemical characterization of bovine serum albumin-cationic gemini surfactant interaction. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Ahmed T, Liu FCF, Lu B, Lip H, Park E, Alradwan I, Liu JF, He C, Zetrini A, Zhang T, Ghavaminejad A, Rauth AM, Henderson JT, Wu XY. Advances in Nanomedicine Design: Multidisciplinary Strategies for Unmet Medical Needs. Mol Pharm 2022; 19:1722-1765. [PMID: 35587783 DOI: 10.1021/acs.molpharmaceut.2c00038] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Globally, a rising burden of complex diseases takes a heavy toll on human lives and poses substantial clinical and economic challenges. This review covers nanomedicine and nanotechnology-enabled advanced drug delivery systems (DDS) designed to address various unmet medical needs. Key nanomedicine and DDSs, currently employed in the clinic to tackle some of these diseases, are discussed focusing on their versatility in diagnostics, anticancer therapy, and diabetes management. First-hand experiences from our own laboratory and the work of others are presented to provide insights into strategies to design and optimize nanomedicine- and nanotechnology-enabled DDS for enhancing therapeutic outcomes. Computational analysis is also briefly reviewed as a technology for rational design of controlled release DDS. Further explorations of DDS have illuminated the interplay of physiological barriers and their impact on DDS. It is demonstrated how such delivery systems can overcome these barriers for enhanced therapeutic efficacy and how new perspectives of next-generation DDS can be applied clinically.
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Affiliation(s)
- Taksim Ahmed
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Fuh-Ching Franky Liu
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Brian Lu
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - HoYin Lip
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Elliya Park
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Ibrahim Alradwan
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Jackie Fule Liu
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Chunsheng He
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Abdulmottaleb Zetrini
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Tian Zhang
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Amin Ghavaminejad
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Andrew M Rauth
- Departments of Medical Biophysics and Radiation Oncology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, Toronto, Ontario M5G 2M9, Canada
| | - Jeffrey T Henderson
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
| | - Xiao Yu Wu
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, 144 College Street, Toronto, Ontario M5S 3M2, Canada
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13
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Wojcieszak M, Kaczmarek DK, Krzyźlak K, Siarkiewicz A, Klejdysz T, Materna K. Surface properties of dicationic ionic liquids and correlation with biological activity. TENSIDE SURFACT DET 2022. [DOI: 10.1515/tsd-2022-2431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The surface activity of dicationic ionic liquids is described in this paper. The basic interfacial parameters including critical micelle concentration (CMC), surface tension at the CMC (γ
CMC), the adsorption efficiency (pC20), surface excess (Γmax), the minimum surface occupied by a single molecule (A
min), and Gibbs energy (ΔG
0
ads) were investigated and compared. Basically, we wanted to extend our previous study on dicationic ionic liquids with bis-ammonium cation. Knowing that, the compounds obtained are effective in limiting the feeding of adult and larvae confused flour beetle (T. confusum), it was decided to correlate the deterrent activity with the surface properties of analyzed dicationic ionic liquids. Accordingly, it was found that the deterrent activity of the studied compounds increases with increasing wetting ability.
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Affiliation(s)
- Marta Wojcieszak
- Poznan University of Technology, Institute of Chemical Technology and Engineering , Poznan , Poland
| | | | - Klaudia Krzyźlak
- Poznan University of Technology, Institute of Chemical Technology and Engineering , Poznan , Poland
| | - Amelia Siarkiewicz
- Poznan University of Technology, Institute of Chemical Technology and Engineering , Poznan , Poland
| | - Tomasz Klejdysz
- Institute of Plant Protection, National Research Institute , Poznan , Poland
| | - Katarzyna Materna
- Poznan University of Technology, Institute of Chemical Technology and Engineering , Poznan , Poland
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Gene-Delivery Ability of New Hydrogenated and Partially Fluorinated Gemini bispyridinium Surfactants with Six Methylene Spacers. Int J Mol Sci 2022; 23:ijms23063062. [PMID: 35328483 PMCID: PMC8949414 DOI: 10.3390/ijms23063062] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/22/2022] [Accepted: 03/09/2022] [Indexed: 01/22/2023] Open
Abstract
The pandemic emergency determined by the spreading worldwide of the SARS-CoV-2 virus has focused the scientific and economic efforts of the pharmaceutical industry and governments on the possibility to fight the virus by genetic immunization. The genetic material must be delivered inside the cells by means of vectors. Due to the risk of adverse or immunogenic reaction or replication connected with the more efficient viral vectors, non-viral vectors are in many cases considered as a preferred strategy for gene delivery into eukaryotic cells. This paper is devoted to the evaluation of the gene delivery ability of new synthesized gemini bis-pyridinium surfactants with six methylene spacers, both hydrogenated and fluorinated, in comparison with compounds with spacers of different lengths, previously studied. Results from MTT proliferation assay, electrophoresis mobility shift assay (EMSA), transient transfection assay tests and atomic force microscopy (AFM) imaging confirm that pyridinium gemini surfactants could be a valuable tool for gene delivery purposes, but their performance is highly dependent on the spacer length and strictly related to their structure in solution. All the fluorinated compounds are unable to transfect RD-4 cells, if used alone, but they are all able to deliver a plasmid carrying an enhanced green fluorescent protein (EGFP) expression cassette, when co-formulated with 1,2-dioleyl-sn-glycero-3-phosphoethanolamine (DOPE) in a 1:2 ratio. The fluorinated compounds with spacers formed by six (FGP6) and eight carbon atoms (FGP8) give rise to a very interesting gene delivery activity, greater to that of the commercial reagent, when formulated with DOPE. The hydrogenated compound GP16_6 is unable to sufficiently compact the DNA, as shown by AFM images.
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15
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Gan C, Cheng R, Cai K, Wang X, Xie C, Xu T, Yuan C. Interaction of calf thymus DNA and glucose-based gemini cationic surfactants with different spacer length: A spectroscopy and DLS study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120606. [PMID: 34802935 DOI: 10.1016/j.saa.2021.120606] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 11/01/2021] [Accepted: 11/08/2021] [Indexed: 06/13/2023]
Abstract
The interactions between calf thymus DNA and a series of glucose-based cationic gemini surfactants 1a-1c with different spacer length, n = 4, 6 and 8, were studied by UV absorption, fluorescence spectroscopy, circular dichroism, FT-IR, dynamic light scattering and zeta potential measurements. The results showed that all the surfactants could interact with DNA efficiently. On addition of increasing concentration of the surfactants, UV absorption hypochromicity with insignificant blue shift were observed, until the DNA signal disappeared. The surfactant 1c was more efficient in the reduction of absorption intensity of DNA. According to the fluorescence quenching experiments by ethidium bromide exclusion, 1c exhibited the highest binding properties, with the binding constant at 3.25 × 108 L·mol-1. The spectroscopy study indicated that the surfactants bound with the DNA by a non-intercalative mode, mainly electrostatic interaction between the positively charged headgroups of the surfactants and negatively charged phosphate groups of DNA at low concentration, and the hydrophobic interaction among the alkyl chains at high concentration. The conformation of DNA during the interaction process could be kept B-form of DNA. For 1c, the DNA molecules can be compacted to about 103 nm in hydrodynamic diameter at 0.2 mM, while the minimum sizes of DNA were 140 nm and 133 nm, respectively, in the presence of 1a and 1b. The impact of the cationic gemini surfactants on the DNA compaction and condensation would shed light on their potential applications in gene delivery.
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Affiliation(s)
- Changsheng Gan
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, PR China.
| | - Rong Cheng
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, PR China
| | - Kunliang Cai
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, PR China
| | - Xiaonan Wang
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, PR China
| | - Chenkun Xie
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, PR China
| | - Tiantian Xu
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, PR China
| | - Chuanxun Yuan
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, PR China
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Cationic gemini surfactant properties, its potential as a promising bioapplication candidate, and strategies for improving its biocompatibility: A review. Adv Colloid Interface Sci 2022; 299:102581. [PMID: 34891074 DOI: 10.1016/j.cis.2021.102581] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/26/2021] [Accepted: 11/30/2021] [Indexed: 12/14/2022]
Abstract
Gemini surfactants consist of two cationic monomers of a surfactant linked together with a spacer. The specific structure of a cationic gemini surfactant is the reason for both its high surface activity and its ability to decrease the surface tension of water. The high surface activity and unique structure of gemini surfactants result in outstanding properties, including antibacterial and antifungal activity, anticorrosion properties, unique aggregation behaviour, the ability to form various structures reversibly in response to environmental conditions, and interactions with biomacromolecules such as DNA and proteins. These properties can be tailored by selecting the optimal structure of a gemini surfactant in terms of the nature and length of its alkyl substituents, spacer, and head group. Additionally, regarding their properties, comparison with their monomeric counterparts demonstrates that gemini surfactants have higher performance efficacy at lower concentrations. Hence, less material is needed, and the toxicity is lower. However, there are some limitations regarding their biocompatibility that have led researchers to develop amino acid-based and sugar-based gemini surfactants. Owing to their remarkable properties, cationic gemini surfactants are promising candidates for bioapplications such as drug delivery systems, gene carriers, and biomaterial surface modification.
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Akram M, Lal H, Kabir-Ud-Din. Exploring the binding mode of ester-based cationic gemini surfactants with calf thymus DNA: A detailed physicochemical, spectroscopic and theoretical study. Bioorg Chem 2021; 119:105555. [PMID: 34923244 DOI: 10.1016/j.bioorg.2021.105555] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/29/2021] [Accepted: 12/09/2021] [Indexed: 12/21/2022]
Abstract
Gene therapy is a transfectant method for the treatment of hereditary disease, which transfers the gene mutation into the cells. In the view of the high prospects of utilization of cationic gemini surfactants as a non-viral vector for the gene transfection, we have made a comprehensive study on the interactions between a recently synthesized series of ester-functionalized cationic Cm-E2O-Cm gemini surfactants (m = 12, 14 and 16) with calf thymus deoxyribonucleic acid (ctDNA) utilizing various techniques. The micellization behavior of gemini surfactants has been altered in the presence of ctDNA. A series of measurements (fluorescence, UV-vis and time-resolved fluorescence) show that the quenching of ctDNA proceeds by a static mechanism. The competitive displacement studies (EB, AO and HO), KI quenching analysis, CD studies and viscosity measurements suggested intercalative binding mode in a stoichiometry ratio of 1:1 with the Kb (binding constant) order being: C16-E2O-C16 > C14-E2O-C14 > C12-E2O-C12. The thermodynamic parameters show that the geminis interacted with ctDNA spontaneously through ionic/electrostatic interactions. Furthermore, the theoretical approaches offer accurate insights about the binding of gemini surfactants with DNA, and are in consistence with the experimental results.
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Affiliation(s)
- Mohd Akram
- Department of Chemistry, Aligarh Muslim University, Aligarh-202002, India.
| | - Hira Lal
- Department of Chemistry, Aligarh Muslim University, Aligarh-202002, India
| | - Kabir-Ud-Din
- Department of Chemistry, College of Natural and Computational Sciences, Arba Minch University, Arba Minch, Ethiopia
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Ba-Salem AO, Duhamel J. Synthesis and Characterization of a Pyrene-Labeled Gemini Surfactant Sensitive to the Polarity of Its Environment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13824-13837. [PMID: 34791874 DOI: 10.1021/acs.langmuir.1c01759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The cationic gemini surfactant PyO-3-12 was designed to include two dimethyl ammonium groups, one dodecyl tail, and 1-pyrenemethyl hexyl ether tail into the structure of the surfactant. The pyrenyl label ensured that the fluorescence of pyrene could be employed to probe the behavior of PyO-3-12 at the molecular level. The introduction of the oxygen atom in the β-position to pyrene was found to be critical for restoring the sensitivity of the pyrenyl label to the polarity of its environment. The properties of PyO-3-12 were characterized in water by surface tension and a fluorescence methodology that involved the global model-free analysis (MFA) of the pyrene monomer and excimer fluorescence decays to provide quantitative information about the state (unassociated-vs-aggregated) of PyO-3-12. The MFA was combined with a fluorescence quenching study with 2,6-dinitrotoluene to determine the size of the PyO-3-12 micelles. PyO-3-12 was found to behave like a typical gemini surfactant, exhibiting a critical micelle concentration (CMC) of 0.38 (±0.05) mM and an aggregation number (Nagg) equal to 23 (±2). Besides allowing PyO-3-12 to probe the polarity of its environment, the oxygen atom in the β-position next to pyrene brought some pyrenyl labels closer to the interface between the micellar interior and the aqueous phase, in a process that increased the effective volume of the hydrophobic part of PyO-3-12. This led to an increase in the packing parameter of PyO-3-12 and, consequently, an increase in Nagg compared to the Nagg value of 14 (±0.2) obtained for Py-3-12, a gemini surfactant, whose chemical structure was similar to that of PyO-3-12 but without the oxygen in the β-position to pyrene. The methodology described in this study to prepare and characterize pyrene-labeled surfactants is general and can be applied to study any pyrene-labeled surfactant and its interactions with oppositely charged macromolecules.
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Affiliation(s)
- Abdullah O Ba-Salem
- Institute for Polymer Research, Waterloo Institute for Nanotechnology, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Jean Duhamel
- Institute for Polymer Research, Waterloo Institute for Nanotechnology, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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19
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Optimizing the Design of Blood-Brain Barrier-Penetrating Polymer-Lipid-Hybrid Nanoparticles for Delivering Anticancer Drugs to Glioblastoma. Pharm Res 2021; 38:1897-1914. [PMID: 34655006 DOI: 10.1007/s11095-021-03122-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 10/07/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE Chemotherapy for glioblastoma multiforme (GBM) remains ineffective due to insufficient penetration of therapeutic agents across the blood-brain barrier (BBB) and into the GBM tumor. Herein, is described, the optimization of the lipid composition and fabrication conditions for a BBB- and tumor penetrating terpolymer-lipid-hybrid nanoparticle (TPLN) for delivering doxorubicin (DOX) to GBM. METHODS The composition of TPLNs was first screened using different lipids based on nanoparticle properties and in vitro cytotoxicity by using 23 full factorial experimental design. The leading DOX loaded TPLNs (DOX-TPLN) were prepared by further optimization of conditions and used to study cellular uptake mechanisms, in vitro cytotoxicity, three-dimensional (3D) glioma spheroid penetration, and in vivo biodistribution in a murine orthotopic GBM model. RESULTS Among various lipids studied, ethyl arachidate (EA) was found to provide excellent nanoparticle properties e.g., size, polydispersity index (PDI), zeta potential, encapsulation efficiency, drug loading, and colloidal stability, and highest anticancer efficacy for DOX-TPLN. Further optimized EA-based TPLNs were prepared with an optimal particle size (103.8 ± 33.4 nm) and PDI (0.208 ± 0.02). The resultant DOX-TPLNs showed ~ sevenfold higher efficacy than free DOX against human GBM U87-MG-RED-FLuc cells in vitro. The interaction between the TPLNs and the low-density lipoprotein receptors also facilitated cellular uptake, deep penetration into 3D glioma spheroids, and accumulation into the in vivo brain tumor regions of DOX-TPLNs. CONCLUSION This work demonstrated that the TPLN system can be optimized by rational selection of lipid type, lipid content, and preparation conditions to obtain DOX-TPLN with enhanced anticancer efficacy and GBM penetration and accumulation.
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Sun Z, Huang J, Su L, Li J, Qi F, Su H, Chen Y, Zhang Q, Zhang Q, Li Z, Zhang S. Arf6-mediated macropinocytosis-enhanced suicide gene therapy of C16TAB-condensed Tat/pDNA nanoparticles in ovarian cancer. NANOSCALE 2021; 13:14538-14551. [PMID: 34473182 DOI: 10.1039/d1nr03974a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The use of cell-penetrating peptides (CPPs), typically HIV-Tat, to deliver therapeutic genes for cancer treatment is hampered by the inefficient delivery and complicated uptake route of plasmid DNA (pDNA). On the one hand, surface charges, particle size and shape essentially contribute to the endocytosis pathway of Tat/pDNA nanocomplexes, and on the other hand, endogenous cellular factors dominantly determine their intracellular trafficking fate and biological outcome. Recent advances in surfactant-modified nanomaterial and dual molecular imaging technology have offered new opportunities for suicide gene therapy. In this study, we employed the cationic surfactant C16TAB to further condense Tat/pDNA nanocomplexes for improving their delivery efficiency and tested the therapeutic effect of Tat/pDNA/C16TAB (T-P-C) nanoparticles carrying the GCV-converted HSV-ttk suicide gene for ovarian cancer. The cellular endocytosis pathway and underlying signal mechanism of T-P-C nanoparticles were further determined. The obtained T-P-C nanoparticles exhibited a small size, positive surface charge, irregular granular shape and high pDNA encapsulation efficiency. The in vitro experiments showed that T-P-C nanoparticles mainly used the macropinocytosis pathway for uptake in ovarian cancer cells. Their internalization and payload gene expression were controlled by the Arf6 GTPase-dependent, Rab GTPase-activated signal axis. Further in vivo molecular imaging based on DF (Fluc-eGFP)-TF (RFP-Rluc-HSV-ttk) system showed that T-P-C nanoparticles significantly increased the targeted delivery and suicide gene therapy in a mouse model xenografted with human ovarian cancer. More importantly, Arf6-mediated macropinocytosis remarkably enhanced the delivery efficiency and suicide gene therapy effect of T-P-C nanoparticles. Therefore, these C16TAB-condensed Tat/pDNA nanoparticles combined with the dual molecular imaging strategy provides a novel intracellular delivery platform for high-efficient, precise suicide gene therapy of ovarian cancer.
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Affiliation(s)
- Zhe Sun
- School of Life Sciences, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Jinhai Huang
- School of Life Sciences, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Linjia Su
- School of Medicine, Nankai University, Tianjin, P.R. China.
| | - Jing Li
- School of Medicine, Nankai University, Tianjin, P.R. China.
| | - Fangzheng Qi
- School of Medicine, Nankai University, Tianjin, P.R. China.
| | - Huishan Su
- School of Medicine, Nankai University, Tianjin, P.R. China.
| | - Yanan Chen
- School of Medicine, Nankai University, Tianjin, P.R. China.
| | - Qing Zhang
- Cancer Hospital of Tianjin Medical University, Tianjin, P.R. China
| | - Qiangzhe Zhang
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
| | - Zongjin Li
- School of Medicine, Nankai University, Tianjin, P.R. China.
| | - Sihe Zhang
- School of Medicine, Nankai University, Tianjin, P.R. China.
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21
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Lebrón JA, López-López M, García-Calderón CB, V. Rosado I, Balestra FR, Huertas P, Rodik RV, Kalchenko VI, Bernal E, Moyá ML, López-Cornejo P, Ostos FJ. Multivalent Calixarene-Based Liposomes as Platforms for Gene and Drug Delivery. Pharmaceutics 2021; 13:pharmaceutics13081250. [PMID: 34452211 PMCID: PMC8398082 DOI: 10.3390/pharmaceutics13081250] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/06/2021] [Accepted: 08/08/2021] [Indexed: 12/13/2022] Open
Abstract
The formation of calixarene-based liposomes was investigated, and the characterization of these nanostructures was carried out using several techniques. Four amphiphilic calixarenes were used. The length of the hydrophobic chains attached to the lower rim as well as the nature of the polar group present in the upper rim of the calixarenes were varied. The lipid bilayer was formed with one calixarene and with the phospholipid 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine, DOPE. The cytotoxicity of the liposomes for various cell lines was also studied. From the results obtained, the liposomes formed with the least cytotoxic calixarene, (TEAC12)4, were used as nanocarriers of both nucleic acids and the antineoplastic drug doxorubicin, DOX. Results showed that (TEAC12)4/DOPE/p-EGFP-C1 lipoplexes, of a given composition, can transfect the genetic material, although the transfection efficiency substantially increases in the presence of an additional amount of DOPE as coadjuvant. On the other hand, the (TEAC12)4/DOPE liposomes present a high doxorubicin encapsulation efficiency, and a slow controlled release, which could diminish the side effects of the drug.
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Affiliation(s)
- José Antonio Lebrón
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Seville, Spain; (J.A.L.); (E.B.)
| | - Manuel López-López
- Department of Chemical Engineering, Physical Chemistry and Materials Science, Faculty of Experimental Sciences, University of Huelva, Campus de El Carmen, Avda. de las Fuerzas Armadas s/n, 21071 Huelva, Spain;
| | - Clara B. García-Calderón
- Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville, Avda. Manuel Siurot s/n, 41013 Seville, Spain; (C.B.G.-C.); (I.V.R.)
| | - Ivan V. Rosado
- Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville, Avda. Manuel Siurot s/n, 41013 Seville, Spain; (C.B.G.-C.); (I.V.R.)
| | - Fernando R. Balestra
- Department of Genetics, Faculty of Biology, University of Seville, C/Profesor García González 1, 41012 Seville, Spain; (F.R.B.); (P.H.)
- Andalusian Center of Molecular Biology and Regenerative Medicine (CABIMER), University of Seville-CSIC-University Pablo de Olavide, Avda. Américo Vespucio 24, 41092 Seville, Spain
| | - Pablo Huertas
- Department of Genetics, Faculty of Biology, University of Seville, C/Profesor García González 1, 41012 Seville, Spain; (F.R.B.); (P.H.)
- Andalusian Center of Molecular Biology and Regenerative Medicine (CABIMER), University of Seville-CSIC-University Pablo de Olavide, Avda. Américo Vespucio 24, 41092 Seville, Spain
| | - Roman V. Rodik
- Institute of Organic Chemistry, National Academy of Science of Ukraine, Murmanska Str. 5, 02660 Kiev, Ukraine; (R.V.R.); (V.I.K.)
| | - Vitaly I. Kalchenko
- Institute of Organic Chemistry, National Academy of Science of Ukraine, Murmanska Str. 5, 02660 Kiev, Ukraine; (R.V.R.); (V.I.K.)
| | - Eva Bernal
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Seville, Spain; (J.A.L.); (E.B.)
| | - María Luisa Moyá
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Seville, Spain; (J.A.L.); (E.B.)
- Correspondence: (M.L.M.); (P.L.-C.); (F.J.O.); Tel.: +34-954-557-175 (M.L.M.)
| | - Pilar López-Cornejo
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Seville, Spain; (J.A.L.); (E.B.)
- Correspondence: (M.L.M.); (P.L.-C.); (F.J.O.); Tel.: +34-954-557-175 (M.L.M.)
| | - Francisco J. Ostos
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Seville, Spain; (J.A.L.); (E.B.)
- Correspondence: (M.L.M.); (P.L.-C.); (F.J.O.); Tel.: +34-954-557-175 (M.L.M.)
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Polańska Ż, Pietralik-Molińska Z, Wojciechowska D, Moliński A, Weiss M, Skrzypczak A, Kozak M. The Process of Binding and Releasing of Genetic Material from Lipoplexes Based on Trimeric Surfactants and Phospholipids. Int J Mol Sci 2021; 22:7744. [PMID: 34299360 PMCID: PMC8303235 DOI: 10.3390/ijms22147744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/14/2021] [Accepted: 07/16/2021] [Indexed: 12/12/2022] Open
Abstract
Nonviral vectors for gene therapy such as lipoplexes are characterized by low toxicity, high biocompatibility, and good transfection efficiency. Specifically, lipoplexes based on polymeric surfactants and phospholipids have great potential as gene carriers due to the increased ability to bind genetic material (multiplied positive electric charge) while lowering undesirable effects (the presence of lipids makes the system more like natural membranes). This study aimed to test the ability to bind and release genetic material by lipoplexes based on trimeric surfactants and lipid formulations of different compositions and to characterize formed complexes by circular dichroism (CD) spectroscopy and atomic force microscopy (AFM). The cytotoxicity of studied lipoplexes was tested on HeLa cells by the MTT cell viability assay and the dye exclusion test (trypan blue). The presence of lipids in the system lowered the surfactant concentration required for complexation (higher efficiency) and reduced the cytotoxicity of lipoplexes. Surfactant/lipids/DNA complexes were more stable than surfactant/DNA complexes. Surfactant molecules induced the genetic material condensation, but the presence of lipids significantly intensified this process. Systems based on trimeric surfactants and lipid formulations, particularly TRI_N and TRI_IMI systems, could be used as delivery carrier, and have proven to be highly effective, nontoxic, and universal for DNA of various lengths.
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Affiliation(s)
- Żaneta Polańska
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, 61-614 Poznań, Poland; (Ż.P.); (Z.P.-M.); (D.W.); (A.M.)
| | - Zuzanna Pietralik-Molińska
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, 61-614 Poznań, Poland; (Ż.P.); (Z.P.-M.); (D.W.); (A.M.)
| | - Daria Wojciechowska
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, 61-614 Poznań, Poland; (Ż.P.); (Z.P.-M.); (D.W.); (A.M.)
| | - Augustyn Moliński
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, 61-614 Poznań, Poland; (Ż.P.); (Z.P.-M.); (D.W.); (A.M.)
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Pastowskiej 3, 61-614 Poznań, Poland
| | - Marek Weiss
- Faculty of Materials Engineering and Technical Physics, Institute of Physics, Poznań University of Technology, Piotrowo 3, 60-965 Poznań, Poland;
| | - Andrzej Skrzypczak
- Faculty of Chemical Technology, Poznań University of Technology, Berdychowo 4, 60-965 Poznań, Poland;
| | - Maciej Kozak
- Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, 61-614 Poznań, Poland; (Ż.P.); (Z.P.-M.); (D.W.); (A.M.)
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Controlled pDNA Release in Gemini Cationic Lipoplexes by Femtosecond Laser Irradiation of Gold Nanostars. NANOMATERIALS 2021; 11:nano11061498. [PMID: 34198842 PMCID: PMC8229200 DOI: 10.3390/nano11061498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/24/2021] [Accepted: 06/01/2021] [Indexed: 11/17/2022]
Abstract
The design of nanovectors able to overcome biological barriers is one of the main challenges in biomedicine. Gemini cationic lipids are considered potential candidates for gene therapy due to their high biocompatibility and capacity to condense nucleic acids safely in the form of lipoplexes. However, this approach presents difficulties regarding genetic unpacking and, therefore, control over this process becomes crucial to ensure successful transfection. In this work, gemini cationic lipoplexes were prepared in the presence of plasmonic gold nanostars (AuNSs) to afford a nanovector that efficiently releases plasmid DNA (pDNA) upon irradiation with near-infrared femtosecond laser pulses. A critical AuNSs concentration of 50 pM and optimized laser power density of 400 mW led to successful pDNA release, whose efficiency could be further improved by increasing the irradiation time. Agarose gel electrophoresis was used to confirm pDNA release. UV-Vis-NIR spectroscopy and transmission electron microscopy studies were performed to monitor changes in the morphology of the AuNSs and lipoplexes after irradiation. From a physicochemical point of view, this study demonstrates that the use of AuNSs combined with gemini cationic lipoplexes allows control over pDNA release under ultrafast laser irradiation.
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24
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Ba-Salem AO, Duhamel J. Determination of the Aggregation Number of Pyrene-Labeled Gemini Surfactant Micelles by Pyrene Fluorescence Quenching Measurements. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6069-6079. [PMID: 33960794 DOI: 10.1021/acs.langmuir.1c00847] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A cationic gemini surfactant referred to as Py-3-12 and composed of two alkylated diammonium bromide head groups, a propyl spacer, and dodecyl and 1-pyrenehexyl hydrophobic tails was synthesized. Its critical micellar concentration (CMC) was determined to equal 0.15 (±0.02) mM by surface tension and time-resolved fluorescence measurements. The state of the pyrene molecules, whether they were incorporated inside the Py-3-12 micelles or unassociated in the aqueous solution, was determined by applying the global model-free analysis (MFA) to the fluorescence decays acquired with Py-3-12 aqueous solutions. The unassociated Py-3-12 surfactants emitted as pyrene monomers and showed a long fluorescence lifetime. The excited pyrenyl groups located inside Py-3-12 micelles formed an excimer by a rapid encounter with a ground-state pyrene with an average rate constant equal to 0.69 (±0.06) ns-1. After having the photophysical properties of Py-3-12 in aqueous solution characterized, the number (Nagg) of surfactants per micelle was determined by conducting quenching experiments with dinitrotoluene (DNT). Although DNT is fairly hydrophobic, it was found to partition itself between the Py-3-12 micelles and the aqueous phase. Fluorescence quenching experiments performed on the pyrene monomer and excimer generated by the Py-3-12 aqueous solutions yielded the concentration ([Q]b) of DNT bound to the Py-3-12 micelles and the average number ⟨n⟩d of DNT quenching an excimer by diffusive encounters. A combination of steady-state and time-resolved fluorescence quenching experiments on the excimer yielded the number (⟨n⟩s) of DNT molecules that were bound to the micelles and quenched the excimer in a static manner. A plot of the sum ⟨n⟩d + ⟨n⟩s as a function of [Q]b yielded an Nagg value of 14.0 (±0.2) Py-3-12 units per micelle. This study represents the first example in the literature where Nagg is determined for a micelle, where each surfactant molecule is labeled with pyrene.
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Affiliation(s)
- Abdullah O Ba-Salem
- Department of Chemistry, Institute for Polymer Research, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Jean Duhamel
- Department of Chemistry, Institute for Polymer Research, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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Sánchez-Arribas N, Martínez-Negro M, Aicart-Ramos C, Tros de Ilarduya C, Aicart E, Guerrero-Martínez A, Junquera E. Gemini Cationic Lipid-Type Nanovectors Suitable for the Transfection of Therapeutic Plasmid DNA Encoding for Pro-Inflammatory Cytokine Interleukin-12. Pharmaceutics 2021; 13:729. [PMID: 34063469 PMCID: PMC8156092 DOI: 10.3390/pharmaceutics13050729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 04/26/2021] [Accepted: 05/13/2021] [Indexed: 12/12/2022] Open
Abstract
Ample evidence exists on the role of interleukin-12 (IL-12) in the response against many pathogens, as well as on its remarkable antitumor properties. However, the unexpected toxicity and disappointing results in some clinical trials are prompting the design of new strategies and/or vectors for IL-12 delivery. This study was conceived to further endorse the use of gemini cationic lipids (GCLs) in combination with zwitterionic helper lipid DOPE (1,2-dioleoyl-sn-glycero-3-phosphatidyl ethanol amine) as nanovectors for the insertion of plasmid DNA encoding for IL-12 (pCMV-IL12) into cells. Optimal GCL formulations previously reported by us were selected for IL-12-based biophysical experiments. In vitro studies demonstrated efficient pCMV-IL12 transfection by GCLs with comparable or superior cytokine levels than those obtained with commercial control Lipofectamine2000*. Furthermore, the nanovectors did not present significant toxicity, showing high cell viability values. The proteins adsorbed on the nanovector surface were found to be mostly lipoproteins and serum albumin, which are both beneficial to increase the blood circulation time. These outstanding results are accompanied by an initial physicochemical characterization to confirm DNA compaction and protection by the lipid mixture. Although further studies would be necessary, the present GCLs exhibit promising characteristics as candidates for pCMV-IL12 transfection in future in vivo applications.
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Affiliation(s)
- Natalia Sánchez-Arribas
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
| | - María Martínez-Negro
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
| | - Clara Aicart-Ramos
- Departamento de Estructura de Macromoléculas, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain;
| | - Conchita Tros de Ilarduya
- Departamento de Tecnología y Química Farmacéuticas, Facultad de Farmacia y Nutrición, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Universidad de Navarra, 31080 Pamplona, Spain;
| | - Emilio Aicart
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
| | - Andrés Guerrero-Martínez
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
| | - Elena Junquera
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
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Cationic Single-Chained Surfactants with a Functional Group at the End of the Hydrophobic Tail DNA Compacting Efficiency. Pharmaceutics 2021; 13:pharmaceutics13040589. [PMID: 33924284 PMCID: PMC8074900 DOI: 10.3390/pharmaceutics13040589] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 11/16/2022] Open
Abstract
The interaction between calf-thymus DNA, ctDNA, and various single-chained surfactants with different functional groups at the end of hydrophobic tail was studied with the goal of investigating the influence of the functional group nature on surfactant DNA compacting efficiency. The surfactants investigated were dodecyltriethylammonium bromide (DTEABr), triethyl(1-phenoxydodecyl)ammonium bromide (12PhBr), triethyl(2-naphthoxydodecyl)ammonium bromide (12NBr) and 11-(isonicotinoyloxy)-N,N,N-triethyl-1-undecanaminium bromide (11PyBr). Results made evident that the surfactants' tendencies to self-aggregation is the key factor determining their efficiency to compact the nucleic acid. Subsequently, DOPE/12NBr/pEGFP-C1 lipoplexes, with different cationic surfactant molar fractions (α) and mass ratios (L/D), were prepared and characterized. DOPE is a zwitterionic phospholipid 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine, and the plasmid pEGFP-C1 carries a GFP coding sequence with the necessary regulatory elements for constitutive expression of the gene in human cells. 12NBr was chosen because it was the most efficient DNA compacting agent among the surfactants investigated. Finally, the cytotoxicity and transfection efficiency (TE) of DOPE/12NBr/pDNA lipoplexes, with different compositions, were investigated.
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Amini MA, Ahmed T, Liu FCF, Abbasi AZ, Soeandy CD, Zhang RX, Prashad P, Cummins CL, Rauth AM, Henderson JT, Wu XY. Exploring the transformability of polymer-lipid hybrid nanoparticles and nanomaterial-biology interplay to facilitate tumor penetration, cellular uptake and intracellular targeting of anticancer drugs. Expert Opin Drug Deliv 2021; 18:991-1004. [PMID: 33703991 DOI: 10.1080/17425247.2021.1902984] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Successful delivery of anticancer drugs to intracellular targets requires different properties of the nanocarrier to overcome multiple transport barriers. However, few nanocarrier systems, to date, possess such properties, despite knowledge about the biological fate of inorganic and polymeric nanocarriers in relation to their fixed size, shape and surface properties. Herein, a polymer-lipid hybrid nanoparticle (PLN) system is described with size and shape transformability and its mechanisms of cellular uptake and intracellular trafficking are studied. METHODS Pharmaceutical lipids were screened for use in transformable PLN. Mechanisms of cellular uptake and the role of fatty acid-binding proteins in intracellular trafficking of PLN were investigated in breast cancer cells. Intra-tumoral penetration and retention of doxorubicin (DOX) were evaluated by confocal microscopy. RESULTS The lead PLNs showed time-dependent size reduction and shape change from spherical to spiky shape. This transformability of PLNs and lipid trafficking pathways facilitated intracellular transport of DOX-loaded PLN (DOX-PLN) into mitochondria and nuclei. DOX-PLN significantly increased DOX penetration and retention over free DOX or non-transformable liposomal DOX particles at 4 h post-intravenous administration. CONCLUSION Transformability of PLN and lipid-biology interplay can be exploited to design new nanocarriers for effective drug delivery to tumor cells and intracellular targets.
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Affiliation(s)
- Mohammad Ali Amini
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Taksim Ahmed
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Fuh-Ching Franky Liu
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Azhar Z Abbasi
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Chesarahmia Dojo Soeandy
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Rui Xue Zhang
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Preethy Prashad
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Carolyn L Cummins
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Andrew M Rauth
- Departments of Medical Biophysics and Radiation Oncology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, Toronto, Ontario, Canada
| | - Jeffrey T Henderson
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Xiao Yu Wu
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
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Neubauer D, Jaśkiewicz M, Bauer M, Olejniczak-Kęder A, Sikorska E, Sikora K, Kamysz W. Biological and Physico-Chemical Characteristics of Arginine-Rich Peptide Gemini Surfactants with Lysine and Cystine Spacers. Int J Mol Sci 2021; 22:3299. [PMID: 33804887 PMCID: PMC8036666 DOI: 10.3390/ijms22073299] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 12/11/2022] Open
Abstract
Ultrashort cationic lipopeptides (USCLs) and gemini cationic surfactants are classes of potent antimicrobials. Our recent study has shown that the branching and shortening of the fatty acids chains with the simultaneous addition of a hydrophobic N-terminal amino acid in USCLs result in compounds with enhanced selectivity. Here, this approach was introduced into arginine-rich gemini cationic surfactants. l-cystine diamide and l-lysine amide linkers were used as spacers. Antimicrobial activity against planktonic and biofilm cultures of ESKAPE (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp.) strains and Candida sp. as well as hemolytic and cytotoxic activities were examined. Moreover, antimicrobial activity in the presence of human serum and the ability to form micelles were evaluated. Membrane permeabilization study, serum stability assay, and molecular dynamics were performed. Generally, critical aggregation concentration was linearly correlated with hydrophobicity. Gemini surfactants were more active than the parent USCLs, and they turned out to be selective antimicrobial agents with relatively low hemolytic and cytotoxic activities. Geminis with the l-cystine diamide spacer seem to be less cytotoxic than their l-lysine amide counterparts, but they exhibited lower antibiofilm and antimicrobial activities in serum. In some cases, geminis with branched fatty acid chains and N-terminal hydrophobic amino acid resides exhibited enhanced selectivity to pathogens over human cells.
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Affiliation(s)
- Damian Neubauer
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, 80-416 Gdańsk, Poland; (M.J.); (M.B.); (K.S.); (W.K.)
| | - Maciej Jaśkiewicz
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, 80-416 Gdańsk, Poland; (M.J.); (M.B.); (K.S.); (W.K.)
| | - Marta Bauer
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, 80-416 Gdańsk, Poland; (M.J.); (M.B.); (K.S.); (W.K.)
| | - Agata Olejniczak-Kęder
- Department of Histology, Faculty of Medicine, Medical University of Gdańsk, 80-211 Gdańsk, Poland;
| | - Emilia Sikorska
- Department of Organic Chemistry, Faculty of Chemistry, University of Gdańsk, 80-308 Gdańsk, Poland;
| | - Karol Sikora
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, 80-416 Gdańsk, Poland; (M.J.); (M.B.); (K.S.); (W.K.)
| | - Wojciech Kamysz
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, 80-416 Gdańsk, Poland; (M.J.); (M.B.); (K.S.); (W.K.)
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Effective cytocompatible nanovectors based on serine-derived gemini surfactants and monoolein for small interfering RNA delivery. J Colloid Interface Sci 2021; 584:34-44. [PMID: 33039681 DOI: 10.1016/j.jcis.2020.09.077] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/19/2020] [Accepted: 09/20/2020] [Indexed: 12/18/2022]
Abstract
Non-viral gene therapy based on gene silencing with small interfering RNA (siRNA) has attracted great interest over recent years. Among various types of cationic complexation agents, amino acid-based surfactants have been recently explored for nucleic acid delivery due to their low toxicity and high biocompatibility. Monoolein (MO), in turn, has been used as helper lipid in liposomal systems due to its ability to form inverted nonbilayer structures that enhance fusogenicity, thus contributing to higher transfection efficiency. In this work, we focused on the development of nanovectors for siRNA delivery based on three gemini amino acid-based surfactants derived from serine - (12Ser)2N12, amine derivative; (12Ser)2COO12, ester derivative; and (12Ser)2CON12, amide derivative - individually combined with MO as helper lipid. The inclusion of MO in the cationic surfactant system influences the morphology and size of the mixed aggregates. Furthermore, the gemini surfactant:MO systems showed the ability to efficiently complex siRNA, forming stable lipoplexes, in some cases clearly depending on the MO content, without inducing significant levels of cytotoxicity. High levels of gene silencing were achieved in comparison with a commercially available standard indicating that these gemini:MO systems are promising candidates as lipofection vectors for RNA interference (RNAi)-based therapies.
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Pérez-Alfonso D, López-López M, López-Cornejo P, Romero-Azogil L, Benito E, García-Martín MDG, García-Calderón CB, Rosado IV, Balestra FR, Huertas P, García-Calderón M, Moyá ML. Properties of polyplexes formed between a cationic polymer derived from l-arabinitol and nucleic acids. NEW J CHEM 2021. [DOI: 10.1039/d1nj00606a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Polyplexes formed between a cationic polymer, PUArab, and both linear and plasmid DNA were studied. The transfection efficiency of PURarab/pDNA was investigated.
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A Fluorescence Study on Surface Properties of Cationic Gemini Surfactant with Some Special Alcohols. BORNEO JOURNAL OF RESOURCE SCIENCE AND TECHNOLOGY 2020. [DOI: 10.33736/bjrst.2736.2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Alcohols are very important additives and played a measure role as co-surfactants in various industrial and research applications. While, Gemini surfactants are mainly used as effective emulsifiers, antifoaming agents, bactericidal agents, coating agents and corrosion inhibitors etc. Therefore, it is important to study about the variations in alkanol concentrations which affects the aggregation number and other related parameters. Surface properties of gemini surfactant butanediyl-1,4-bis(dimethyldodecylammonium bromide) (12-4-12) has been studied by using fluorescence method. This method has been used to calculate the aggregation number (Nagg) and the other related parameters like dielectric constant (D), Stern Volmer binding constant (KSV) of mixed system. This method is also very important for the calculation of the micropolarity of the mixed system (gemini/alcohol). The micropolarity has been obtained with the help of the ratio of intensity of peaks (I1/I3) of the pyrene fluorescence emission spectrum. Cetylpridinium chloride and pyrene were used as quencher and probe, respectively.
Keywords: Gemini surfactant, special alcohols, aggregation number, micropolarity
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Silva EF, Andrade UMS, de Oliveira KM, Teixeira AVNC, Rocha MS. Dodecyltrimethylammonium bromide surfactant effects on DNA: Unraveling the competition between electrostatic and hydrophobic interactions. Phys Rev E 2020; 102:032401. [PMID: 33076016 DOI: 10.1103/physreve.102.032401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/16/2020] [Indexed: 01/04/2023]
Abstract
We present a new study on the interaction of the DNA molecule with the surfactant dodecyltrimethylammonium bromide (DTAB), performed mainly with optical tweezers. Single-molecule force spectroscopy experiments performed in the low-force entropic regime allowed a robust characterization of the DNA-DTAB interaction, unveiling how the surfactant changes the mechanical properties of the biopolymer, the binding parameters, and the competition of the two mechanisms involved in the interaction: electrostatic attraction between the cationic surfactant heads and the negative phosphate backbone of the DNA and hydrophobic interactions between the tails of the bound DTAB molecules, which can result in DNA compaction in solution depending on the quantity of bound surfactant. Finally, force clamp experiments with magnetic tweezers and gel electrophoresis assays confirm that DTAB compacts DNA depending not only on the surfactant concentration but also on the conformation of the biopolymer in solution. The present study provides new insights on general aspects of the DNA-surfactant complexes formation, contributing to the fundamental knowledge of the physics of such interactions.
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Affiliation(s)
- E F Silva
- Departamento de Física, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil and Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, 36036-900, Brazil
| | - U M S Andrade
- Departamento de Física, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil and Departamento de Formação Geral, Centro Federal de Educação Tecnológica de Minas Gerais, Curvelo, Minas Gerais, 35790-000, Brasil
| | - K M de Oliveira
- Departamento de Física, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - A V N C Teixeira
- Departamento de Física, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - M S Rocha
- Departamento de Física, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
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Sánchez-Arribas N, Martínez-Negro M, Villar EM, Pérez L, Osío Barcina J, Aicart E, Taboada P, Guerrero-Martínez A, Junquera E. Protein Expression Knockdown in Cancer Cells Induced by a Gemini Cationic Lipid Nanovector with Histidine-Based Polar Heads. Pharmaceutics 2020; 12:E791. [PMID: 32825658 PMCID: PMC7558209 DOI: 10.3390/pharmaceutics12090791] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/13/2020] [Accepted: 08/19/2020] [Indexed: 12/12/2022] Open
Abstract
A histidine-based gemini cationic lipid, which had already demonstrated its efficiency as a plasmid DNA (pDNA) nanocarrier, has been used in this work to transfect a small interfering RNA (siRNA) into cancer cells. In combination with the helper lipid monoolein glycerol (MOG), the cationic lipid was used as an antiGFP-siRNA nanovector in a multidisciplinary study. Initially, a biophysical characterization by zeta potential (ζ) and agarose gel electrophoresis experiments was performed to determine the lipid effective charge and confirm siRNA compaction. The lipoplexes formed were arranged in Lα lamellar lyotropic liquid crystal phases with a cluster-type morphology, as cryo-transmission electron microscopy (cryo-TEM) and small-angle X-ray scattering (SAXS) studies revealed. Additionally, in vitro experiments confirmed the high gene knockdown efficiency of the lipid-based nanovehicle as detected by flow cytometry (FC) and epifluorescence microscopy, even better than that of Lipofectamine2000*, the transfecting reagent commonly used as a positive control. Cytotoxicity assays indicated that the nanovector is non-toxic to cells. Finally, using nano-liquid chromatography tandem mass spectrometry (nanoLC-MS/MS), apolipoprotein A-I and A-II followed by serum albumin were identified as the proteins with higher affinity for the surface of the lipoplexes. This fact could be beyond the remarkable silencing activity of the histidine-based lipid nanocarrier herein presented.
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Affiliation(s)
- Natalia Sánchez-Arribas
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
| | - María Martínez-Negro
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
| | - Eva M. Villar
- Departamento de Física de Partículas, Facultad de Físicas e Instituto de Investigaciones Sanitarias (IDIS), Universidad de Santiago de Compostela, Campus Vida, E-15782 Santiago de Compostela, Spain; (E.M.V.); (P.T.)
| | - Lourdes Pérez
- Departamento de Tensioactivos y Nanobiotecnología, IQAC-CSIC, 08034 Barcelona, Spain;
| | - José Osío Barcina
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain;
| | - Emilio Aicart
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
| | - Pablo Taboada
- Departamento de Física de Partículas, Facultad de Físicas e Instituto de Investigaciones Sanitarias (IDIS), Universidad de Santiago de Compostela, Campus Vida, E-15782 Santiago de Compostela, Spain; (E.M.V.); (P.T.)
| | - Andrés Guerrero-Martínez
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
| | - Elena Junquera
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.S.-A.); (M.M.-N.); (E.A.); (A.G.-M.)
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Narsineni L, Foldvari M. Dicationic Amino Substituted Gemini Surfactants and their Nanoplexes: Improved Synthesis and Characterization of Transfection Efficiency and Corneal Penetration In Vitro. Pharm Res 2020; 37:144. [PMID: 32666411 DOI: 10.1007/s11095-020-02836-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 04/29/2020] [Indexed: 01/01/2023]
Abstract
PURPOSE To formulate and characterize nanoparticles from m-7NH-m gemini surfactants, synthesized by a new improved method, for non-invasive gene delivery including optimization of composition for transfection efficiency and corneal penetration. METHODS A one-pot, solvent-free, DMAP-free method was developed for the synthesis of m-7NH-m (m = 12-18) gemini surfactant series. Lipoplexes (LPXs) and nanoplexes (NPXs) of gemini surfactant-plasmid DNA were formulated with and without DOPE helper lipid, respectively, at various charge ratios and characterized by dynamic light scattering and zeta potential measurements. Transfection efficiency, cellular toxicity, effect of DOPE and gene expression kinetic studies were carried out in A7 astrocytes by flow cytometry and confocal microscopy. Corneal penetration studies of 18-7NH-18 NPXs were carried out using 3D EpiCorneal® tissue model. RESULTS The new synthesis method provides a two-fold improved yield and the production of a pure species of m-7NH-m without DMAP and trimeric m-7N(m)-m surfactants as impurities. Structure and purity was confirmed by ESI-MS, 1H NMR spectroscopy and surface tension measurements. Particle size of 199.80 ± 1.83 nm ± S.D. and a zeta potential value of +30.18 ± 1.17 mV ± S.D. was obtained for 18-7NH-18 5:1 ratio NPXs showed optimum transfection efficiency (10.97 ± 0.11%) and low toxicity (92.97 ± 0.57% viability) at the 48-h peak expression. Inclusion of DOPE at 1: 0.5 and 1:1 ratios to gemini surfactant reduced transfection efficiency and increased toxicity. Treatment of EpiCorneal® tissue model showed deep penetration of up to 100 μm with 18-7NH-18 NPXs. CONCLUSION Overall, 18-7NH-18 NPXs are potential gene delivery systems for ophthalmic gene delivery and for further in vivo studies.
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Affiliation(s)
- Lokesh Narsineni
- School of Pharmacy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Marianna Foldvari
- School of Pharmacy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada. .,School of Pharmacy, Center for Bioengineering and Biotechnology, Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada.
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Interactions with ctDNA of novel sugar-based gemini cationic surfactants. Int J Biol Macromol 2020; 156:805-811. [PMID: 32272121 DOI: 10.1016/j.ijbiomac.2020.03.254] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/08/2020] [Accepted: 03/31/2020] [Indexed: 12/30/2022]
Abstract
The interactions between calf thymus DNA, ctDNA, and a series of sugar-based gemini cationic surfactants with different hydrophobic chains were investigated. The surface properties of the cationic gemini surfactants were firstly examined, and then their interactions with DNA and induced condensation of DNA were studied by UV-vis, ethidium bromide exclusion assay, circular dichroism, dynamic light scattering, zeta potential and atomic force microscopy. With the increase of hydrophobic chains of the surfactants, critical micelle concentrations decreased significantly, and the interactions with DNA were remarkably strengthened, with the binding constant up to 1.95 × 107 L·mol-1 according to fluorescence quenching experiments by ethidium bromide exclusion. The gemini surfactant with hexadecyl hydrocarbon chain, 1c, exhibited the highest compaction capacity for DNA, accompanied with conformation changes, as confirmed by CD and DLS measurements. The DNA molecules could be compacted to about 140 nm in hydrodynamic diameter at 0.2 mM of 1c, and the overall shifts of the positive band and significant increase of negative molar ellipticity indicated the formation of a supramolecualr chiral order of ѱ phase in which DNA were supposed to be tightly packed.
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36
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Xing H, Lu M, Yang T, Liu H, Sun Y, Zhao X, Xu H, Yang L, Ding P. Structure-function relationships of nonviral gene vectors: Lessons from antimicrobial polymers. Acta Biomater 2019; 86:15-40. [PMID: 30590184 DOI: 10.1016/j.actbio.2018.12.041] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 11/22/2018] [Accepted: 12/21/2018] [Indexed: 01/13/2023]
Abstract
In recent years, substantial advances have been achieved in the design and synthesis of nonviral gene vectors. However, lack of effective and biocompatible vectors still remains a major challenge that hinders their application in clinical settings. In the past decade, there has been a rapid expansion of cationic antimicrobial polymers, due to their potent, rapid, and broad-spectrum biocidal activity against resistant microbes, and biocompatible features. Given that antimicrobial polymers share common features with nonviral gene vectors in various aspects, such as membrane affinity, functional groups, physicochemical characteristics, and unique macromolecular architectures, these polymers may provide us with inspirations to overcome challenges in the design of novel vectors toward more safe and efficient gene delivery in clinic. Building off these observations, we provide here an overview of the structure-function relationships of polymers for both antimicrobial applications and gene delivery by elaborating some key structural parameters, including functional groups, charge density, hydrophobic/hydrophilic balance, MW, and macromolecular architectures. By borrowing a leaf from antimicrobial agents, great advancement in the development of newer nonviral gene vectors with high transfection efficiency and biocompatibility will be more promising. STATEMENT OF SIGNIFICANCE: The development of gene delivery is still in the preclinical stage for the lack of effective and biocompatible vectors. Given that antimicrobial polymers share common features with gene vectors in various aspects, such as membrane affinity, functional groups, physicochemical characteristics, and unique macromolecular architectures, these polymers may provide us with inspirations to overcome challenges in the design of novel vectors toward more safe and efficient gene delivery in clinic. In this review, we systematically summarized the structure-function relationships of antimicrobial polymers and gene vectors, with which the design of more advanced nonviral gene vectors is anticipated to be further boosted in the future.
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Affiliation(s)
- Haonan Xing
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Mei Lu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Tianzhi Yang
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, Husson University, Bangor, ME, USA
| | - Hui Liu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Yanping Sun
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Xiaoyun Zhao
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, China
| | - Hui Xu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Li Yang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China.
| | - Pingtian Ding
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China.
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Martínez-Negro M, Blanco-Fernández L, Tentori PM, Pérez L, Pinazo A, Tros de Ilarduya C, Aicart E, Junquera E. A Gemini Cationic Lipid with Histidine Residues as a Novel Lipid-Based Gene Nanocarrier: A Biophysical and Biochemical Study. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E1061. [PMID: 30558369 PMCID: PMC6316511 DOI: 10.3390/nano8121061] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/10/2018] [Accepted: 12/12/2018] [Indexed: 01/08/2023]
Abstract
This work reports the synthesis of a novel gemini cationic lipid that incorporates two histidine-type head groups (C₃(C16His)₂). Mixed with a helper lipid 1,2-dioleoyl-sn-glycero-3-phosphatidyl ethanol amine (DOPE), it was used to transfect three different types of plasmid DNA: one encoding the green fluorescence protein (pEGFP-C3), one encoding a luciferase (pCMV-Luc), and a therapeutic anti-tumoral agent encoding interleukin-12 (pCMV-IL12). Complementary biophysical experiments (zeta potential, gel electrophoresis, small-angle X-ray scattering (SAXS), and fluorescence anisotropy) and biological studies (FACS, luminometry, and cytotoxicity) of these C₃(C16His)₂/DOPE-pDNA lipoplexes provided vast insight into their outcomes as gene carriers. They were found to efficiently compact and protect pDNA against DNase I degradation by forming nanoaggregates of 120⁻290 nm in size, which were further characterized as very fluidic lamellar structures based in a sandwich-type phase, with alternating layers of mixed lipids and an aqueous monolayer where the pDNA and counterions are located. The optimum formulations of these nanoaggregates were able to transfect the pDNAs into COS-7 and HeLa cells with high cell viability, comparable or superior to that of the standard Lipo2000*. The vast amount of information collected from the in vitro studies points to this histidine-based lipid nanocarrier as a potentially interesting candidate for future in vivo studies investigating specific gene therapies.
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Affiliation(s)
- María Martínez-Negro
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - Laura Blanco-Fernández
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008 Pamplona, Spain.
| | - Paolo M Tentori
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - Lourdes Pérez
- Dpto. Tecnología Química y Tensioactivos, IQAC-CSIC, 08034 Barcelona, Spain.
| | - Aurora Pinazo
- Dpto. Tecnología Química y Tensioactivos, IQAC-CSIC, 08034 Barcelona, Spain.
| | - Conchita Tros de Ilarduya
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), 31008 Pamplona, Spain.
| | - Emilio Aicart
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - Elena Junquera
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
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Al-Dulaymi M, Michel D, Chitanda JM, El-Aneed A, Verrall RE, Grochulski P, Badea I. Molecular Engineering as an Approach To Modulate Gene Delivery Efficiency of Peptide-Modified Gemini Surfactants. Bioconjug Chem 2018; 29:3293-3308. [PMID: 30169953 DOI: 10.1021/acs.bioconjchem.8b00480] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The unique molecular structure confers the diquaternary ammonium gemini surfactants with enhanced nucleic acid complexation ability, bottom-up design flexibility, and relatively low cytotoxicity. To capitalize on their potential as gene delivery vectors, novel structural modifications should be explored. In this work, 22 novel peptide-modified gemini surfactants with various alkyl tails and peptide spacer modifications were evaluated. This work represents the first report of dendrimer-like gemini surfactants and first evaluation of the impact of incorporating a hydrocarbon linker into the peptide chain. Our aim was to establish a structure activity relationship of the peptide-modified gemini surfactants and to identify the fundamental architectural requirements needed for the ultimate gene delivery systems. In vitro assessment revealed that the highest transfection efficiency and lowest cytotoxicity were associated with the glycyl-lysine modified gemini surfactants having the hexadecyl tail, 16-7N(G-K)-16. In fact, it showed an 8-fold increase in secreted protein with 20% increase in cell viability relative to the first-generation unsubstituted gemini surfactants. Further increase in the size of the attached peptides resulted in a decrease in the transfection efficiency and cell viability. Whereas the incorporation of a hydrocarbon linker into the peptide chain decreased the transfection efficiency of compounds with dipeptides, it increased the transfection efficiency of compounds with larger peptide chains. Such an increase was more prominent with the incorporation of a longer hydrocarbon linker. We conclude that a balance between the hydrophilic and hydrophobic characteristics of the compound is necessary since it results in physicochemical parameters conducive to the gene delivery process.
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Affiliation(s)
| | | | | | | | | | - Pawel Grochulski
- Canadian Light Source , Saskatoon , Saskatchewan S7N 4L5 , Canada
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39
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Gan C, Li H, Cai K. Novel Sugar-Based Gemini Surfactants and Their Surface Properties. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12187] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Changsheng Gan
- Engineering Research Center of Bio-process of Ministry of Education, School of Food Science & Engineering; Hefei University of Technology; Hefei Anhui 230009 China
| | - Hong Li
- Engineering Research Center of Bio-process of Ministry of Education, School of Food Science & Engineering; Hefei University of Technology; Hefei Anhui 230009 China
| | - Kunliang Cai
- Engineering Research Center of Bio-process of Ministry of Education, School of Food Science & Engineering; Hefei University of Technology; Hefei Anhui 230009 China
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40
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Tetraphenylethylene-based gemini surfactant as nonviral gene delivery system: DNA complexation, gene transfection and cellular tracking. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.08.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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41
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Martínez-Negro M, Guerrero-Martínez A, García-Río L, Domènech Ò, Aicart E, Tros de Ilarduya C, Junquera E. Multidisciplinary Approach to the Transfection of Plasmid DNA by a Nonviral Nanocarrier Based on a Gemini-Bolaamphiphilic Hybrid Lipid. ACS OMEGA 2018; 3:208-217. [PMID: 30023772 PMCID: PMC6044976 DOI: 10.1021/acsomega.7b01657] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 12/26/2017] [Indexed: 06/08/2023]
Abstract
A multidisciplinary strategy, including both biochemical and biophysical studies, was proposed here to evaluate the potential of lipid nanoaggregates consisting of a mixture of a gemini-bolaamphiphilic lipid (C6C22C6) and the well-known helper lipid 1,2-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE) to transfect plasmid DNA into living cells in an efficient and safe way. For that purpose, several experimental techniques were employed, such as zeta potential (phase analysis light scattering methodology), agarose gel electrophoresis (pDNA compaction and pDNA protection assays), small-angle X-ray scattering, cryo-transmission electron microscopy, atomic force microscopy, fluorescence-assisted cell sorting, luminometry, and cytotoxicity assays. The results revealed that the cationic lipid and plasmid offer only 70 and 30% of their nominal positive () and negative charges (), respectively. Upon mixing with DOPE, they form lipoplexes that self-aggregate in typical multilamellar Lα lyotropic liquid-crystal nanostructures with sizes in the range of 100-200 nm and low polydispersities, very suitably fitted to remain in the bloodstream and cross the cell membrane. Interestingly, these nanoaggregates were able to compact, protect (from the degrading effect of DNase I), and transfect two DNA plasmids (pEGFP-C3, encoding the green fluorescent protein, and pCMV-Luc, encoding luciferase) into COS-7 cells, with an efficiency equal or even superior to that of the universal control Lipo2000*, as long as the effective +/- charge ratio was maintained higher than 1 but reasonably close to electroneutrality. Moreover, this transfection process was not cytotoxic because the viability of COS-7 cells remained at high levels, greater than 80%. All of these features make the C6C22C6/DOPE nanosystem an optimal nonviral gene nanocarrier in vitro and a potentially interesting candidate for future in vivo experiments.
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Affiliation(s)
- María Martínez-Negro
- Departamento
de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Andrés Guerrero-Martínez
- Departamento
de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Luis García-Río
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CIQUS) and Departamento de Química
Física, Universidade de Santiago, 15782 Santiago, Spain
| | - Òscar Domènech
- Departamento
de Farmacia, Tecnología Farmacéutica y Fisicoquímica,
Facultad de Farmacia y Ciencia de Los Alimentos, Universitat de Barcelona, and Institut de Nanociència i Nanotecnologia
IN2UB, Barcelona, Catalonia 08028, Spain
| | - Emilio Aicart
- Departamento
de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Conchita Tros de Ilarduya
- Departamento
de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Navarra, Instituto de Investigación
Sanitaria de Navarra, 31008 Pamplona, Spain
| | - Elena Junquera
- Departamento
de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
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Mirgorodskaya AB, Valeeva FG, Lukashenko SS, Kushnazarova RA, Prokop'eva TM, Zubareva TM, Mikhailov VA, Zakharova LY. Dicationic hydroxylic surfactants: Aggregation behavior, guest-host interaction and catalytic effect. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.175] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Szutkowski K, Kołodziejska Ż, Pietralik Z, Zhukov I, Skrzypczak A, Materna K, Kozak M. Clear distinction between CAC and CMC revealed by high-resolution NMR diffusometry for a series of bis-imidazolium gemini surfactants in aqueous solutions. RSC Adv 2018; 8:38470-38482. [PMID: 35559094 PMCID: PMC9090568 DOI: 10.1039/c8ra07081d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 11/01/2018] [Indexed: 01/15/2023] Open
Abstract
The aggregation behavior in the transition region was studied for a series of dicationic surfactants 3,3′-[α,ω-(dioxaalkane)]bis(1-dodecylimidazolium)dichlorides with varied spacer length from two to twelve carbon atoms. We employed Nuclear Magnetic Resonance diffusometry and Bayesian DOSY analysis to obtain the aggregate size distribution in the transition region. The critical concentrations CC were independently obtained from surface tension, electric conductivity, UV-Vis and NMR methods. The micelle aggregation numbers were estimated from the self-diffusion coefficients and were independently confirmed using steady-state fluorescence quenching. The morphology of the aggregates was characterized by small-angle scattering of synchrotron radiation and molecular dynamics simulations. The obtained CC values are identified as critical aggregation concentrations CAC. A broad transition region was observed, and stable micelles were obtained at much higher concentrations than CAC. The accurate CMC values could not be identified for the systems in the study. We indicated that the distribution of aggregate size becomes small and the system becomes homogeneous at much larger concentrations than CAC (typically 15–20 mM). The existence of a slow exchange between two environments, an aggregate and aqueous environment, was confirmed by 1H NMR and 2D HSQC NMR spectroscopy. The aggregation behavior in the transition region was studied for a series of dicationic surfactants 3,3′-[α,ω-(dioxaalkane)]bis(1-dodecylimidazolium)dichlorides with varied spacer length from two to twelve carbon atoms.![]()
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Affiliation(s)
- Kosma Szutkowski
- NanoBioMedical Centre
- Adam Mickiewicz University in Poznań
- PL61614 Poznań
- Poland
| | - Żaneta Kołodziejska
- Department of Macromolecular Physics
- Faculty of Physics
- Adam Mickiewicz University in Poznań
- PL61614 Poznań
- Poland
| | - Zuzanna Pietralik
- Department of Macromolecular Physics
- Faculty of Physics
- Adam Mickiewicz University in Poznań
- PL61614 Poznań
- Poland
| | - Igor Zhukov
- Institute of Biochemistry and Biophysics
- Polish Academy of Sciences
- PL02106 Warsaw
- Poland
| | - Andrzej Skrzypczak
- Institute of Chemical Technology and Engineering
- Faculty of Chemical Technology
- Poznań University of Technology
- PL60965 Poznań
- Poland
| | - Katarzyna Materna
- Institute of Chemical Technology and Engineering
- Faculty of Chemical Technology
- Poznań University of Technology
- PL60965 Poznań
- Poland
| | - Maciej Kozak
- Department of Macromolecular Physics
- Faculty of Physics
- Adam Mickiewicz University in Poznań
- PL61614 Poznań
- Poland
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44
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Shortall SM, Wettig SD. Cationic Gemini Surfactant–Plasmid Deoxyribonucleic Acid Condensates as a Single Amphiphilic Entity. J Phys Chem B 2017; 122:194-199. [DOI: 10.1021/acs.jpcb.7b11954] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Samantha M. Shortall
- School
of Pharmacy and ‡Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave. W., Waterloo, ON N2L 3G1, Canada
| | - Shawn D. Wettig
- School
of Pharmacy and ‡Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave. W., Waterloo, ON N2L 3G1, Canada
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45
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Enhancement of lung gene delivery after aerosol: a new strategy using non-viral complexes with antibacterial properties. Biosci Rep 2017; 37:BSR20160618. [PMID: 29046368 PMCID: PMC5691145 DOI: 10.1042/bsr20160618] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/09/2017] [Accepted: 10/10/2017] [Indexed: 02/06/2023] Open
Abstract
The pathophysiology of obstructive pulmonary diseases, such as cystic fibrosis (CF), leads to the development of chronic infections in the respiratory tract. Thus, the symptomatic management of the disease requires, in particular, repetitive antibiotherapy. Besides these antibacterial treatments, certain pathologies, such as CF or chronic obstructive pulmonary disease (COPD), require the intake of many drugs. This simultaneous absorption may lead to undesirable drug interactions. For example, Orkambi® (lumacaftor/Ivacaftor, Vertex), a pharmacological drug employed to treat F508del patients, cannot be used with antibiotics such as rifampicin or rifabutin (rifamycin family) which are necessary to treat Mycobacteriaceae. As far as gene therapy is concerned, bacteria and/or biofilm in the airways present an additional barrier for gene transfer. Thus, aerosol administration of nanoparticles have to overcome many obstacles before allowing cellular penetration of therapeutic compounds. This review focusses on the development of aerosol formulations adapted to the respiratory tract and its multiple barriers. Then, formulations that are currently used in clinical applications are summarized depending on the active molecule delivered. Finally, we focus on new therapeutic approaches to reduce possible drug interactions by transferring the antibacterial activity to the nanocarrier while ensuring the transfection efficiency.
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Martínez-Negro M, Barrán-Berdón AL, Aicart-Ramos C, Moyá ML, de Ilarduya CT, Aicart E, Junquera E. Transfection of plasmid DNA by nanocarriers containing a gemini cationic lipid with an aromatic spacer or its monomeric counterpart. Colloids Surf B Biointerfaces 2017; 161:519-527. [PMID: 29128838 DOI: 10.1016/j.colsurfb.2017.11.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 10/16/2017] [Accepted: 11/07/2017] [Indexed: 11/25/2022]
Abstract
This study performed a biophysical characterization (electrochemistry, structure and morphology) and assessment of the biological activity and cell biocompatibility of GCL/DOPE-pDNA lipoplexes comprised of plasmid DNA and a mixed lipid formed by a DOPE zwitterionic lipid and a gemini cationic lipid N-N'-(1,3-phenylene bis (methylene)) bis (N,N-dimethyl-N-(1-dodecyl) ammonium dibromide (12PH12) containing an aromatic spacer or its monomeric counterpart surfactant, N-benzyl-N,N-dimethyl-N-(1-dodecyl) ammonium bromide (12PH). Electrochemical results reveal that i) the gemini cationic lipid (12PH12) and the plasmid pDNA yield effective charges less than their nominal charges (+2 and -2/bp, respectively) and that ii) both vectors (12PH12/DOPE and 12PH/DOPE) could compact pDNA and protect it from DNase I degradation. SAXS and cryo-TEM experiments indicate the presence of a lamellar lyotropic liquid crystal phase represented as alternating layers of mixed lipid and plasmid. Transfection efficiency (by FACS and luminometry) and cell viability assay in COS-7 cells, performed with two plasmid DNAs (pEGFP-C3 and pCMV-Luc VR1216), confirm the goodness of the proposed formulations (12PH12/DOPE and 12PH/DOPE) to transport genetic material, with efficiencies and biocompatibilities comparable to or better than those exhibited by the control Lipofectamine 2000*. In conclusion, although major attention has been paid to gemini cationic lipids in the literature, due to the large variety of modifications that their structures may support to improve the biological activity of the resulting lipoplexes, it is remarkable that the monomeric counterpart surfactant with an aromatic group analyzed in the present work also exhibits good biological activity. The in vitro results reported here indicate that the optimum formulations of the gene vectors studied in this work efficiently transfect plasmid DNA with very low toxicity levels and, thus, may be used in forthcoming in vivo experiments.
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Affiliation(s)
- María Martínez-Negro
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física I, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Ana L Barrán-Berdón
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física I, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Clara Aicart-Ramos
- Dpto. Bioquímica y Biología Molecular I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - María L Moyá
- Grupo de Química Coloidal y Catálisis Micelar, Departamento de Química Física I, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain
| | | | - Emilio Aicart
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física I, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | - Elena Junquera
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física I, Universidad Complutense de Madrid, 28040 Madrid, Spain
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Satyal U, Draghici B, Dragic LL, Zhang Q, Norris KW, Madesh M, Brailoiu E, Ilies MA. Interfacially Engineered Pyridinium Pseudogemini Surfactants as Versatile and Efficient Supramolecular Delivery Systems for DNA, siRNA, and mRNA. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29481-29495. [PMID: 28809098 PMCID: PMC7774514 DOI: 10.1021/acsami.7b07066] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This article presents the synthesis, self-assembly, and biological activity as transfection agents for pDNA, siRNA, and mRNA of novel pyridinium pseudogemini surfactants, interfacially engineered from the most efficient gemini surfactants and lipids generated in our amphiphile research program. Formulation of novel amphiphiles in water revealed supramolecular properties very similar to those of gemini surfactants, despite their lipidlike charge/mass ratio. This dual character was found also to enhance endosomal escape and significantly increase the transfection efficiency. We were also successful in identifying the parameters governing the efficient delivery of pDNA, siRNA, and mRNA, drawing valuable structure-activity and structure-property relationships for each nucleic acid type, and establishing DNA/siRNA/mRNA comparisons. Several supramolecular complexes identified in this study proved to be extremely efficient nucleic acid delivery systems, displaying excellent serum stability and tissue penetration in three-dimensional organoids.
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Affiliation(s)
- Uttam Satyal
- Department of Pharmaceutical Sciences and Moulder Center of Drug Discovery Research, Temple University School of Pharmacy, Philadelphia, Pennsylvania 19140, United States
| | - Bogdan Draghici
- Department of Pharmaceutical Sciences and Moulder Center of Drug Discovery Research, Temple University School of Pharmacy, Philadelphia, Pennsylvania 19140, United States
| | - Lisa L. Dragic
- Department of Pharmaceutical Sciences and Moulder Center of Drug Discovery Research, Temple University School of Pharmacy, Philadelphia, Pennsylvania 19140, United States
| | - Qiangnan Zhang
- Department of Pharmaceutical Sciences and Moulder Center of Drug Discovery Research, Temple University School of Pharmacy, Philadelphia, Pennsylvania 19140, United States
| | - Kyle W. Norris
- Department of Pharmaceutical Sciences and Moulder Center of Drug Discovery Research, Temple University School of Pharmacy, Philadelphia, Pennsylvania 19140, United States
| | - Muniswamy Madesh
- Department of Medical Genetics and Molecular Biochemistry, Center for Translational Medicine, Philadelphia, Pennsylvania 19140, United States
| | - Eugen Brailoiu
- Center for Substance Abuse Research, Temple University School of Medicine, 3500 North Broad Street, Philadelphia, Pennsylvania 19140, United States
| | - Marc A. Ilies
- Department of Pharmaceutical Sciences and Moulder Center of Drug Discovery Research, Temple University School of Pharmacy, Philadelphia, Pennsylvania 19140, United States
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Huang RT, Rondla R, Wang WJ, Lin IJ. Gemini imidazolium salts comprising Cl − , BF 4 − , PF 6 − , AuCl 4 − counterions: Synthesis, thermotropic liquid crystal study and use of AuCl 4 − salt precursor to AuNPs. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.07.088] [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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Zhang RX, Ahmed T, Li LY, Li J, Abbasi AZ, Wu XY. Design of nanocarriers for nanoscale drug delivery to enhance cancer treatment using hybrid polymer and lipid building blocks. NANOSCALE 2017; 9:1334-1355. [PMID: 27973629 DOI: 10.1039/c6nr08486a] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Polymer-lipid hybrid nanoparticles (PLN) are an emerging nanocarrier platform made from building blocks of polymers and lipids. PLN integrate the advantages of biomimetic lipid-based nanoparticles (i.e. solid lipid nanoparticles and liposomes) and biocompatible polymeric nanoparticles. PLN are constructed from diverse polymers and lipids and their numerous combinations, which imparts PLN with great versatility for delivering drugs of various properties to their nanoscale targets. PLN can be classified into two types based on their hybrid nanoscopic structure and assembly methods: Type-I monolithic matrix and Type-II core-shell systems. This article reviews the history of PLN development, types of PLN, lipid and polymer candidates, fabrication methods, and unique properties of PLN. The applications of PLN in delivery of therapeutic or imaging agents alone or in combination for cancer treatment are summarized and illustrated with examples. Important considerations for the rational design of PLN for advanced nanoscale drug delivery are discussed, including selection of excipients, synthesis processes governing formulation parameters, optimization of nanoparticle properties, improvement of particle surface functionality to overcome macroscopic, microscopic and cellular biological barriers. Future directions and potential clinical translation of PLN are also suggested.
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Affiliation(s)
- Rui Xue Zhang
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, CanadaM5S 3M2.
| | - Taksim Ahmed
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, CanadaM5S 3M2.
| | - Lily Yi Li
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, CanadaM5S 3M2.
| | - Jason Li
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, CanadaM5S 3M2.
| | - Azhar Z Abbasi
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, CanadaM5S 3M2.
| | - Xiao Yu Wu
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, CanadaM5S 3M2.
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Xia Y, Gao Z, Liao X, Pan C, Zhang Y, Feng X. Rapid synthesis of hierarchical, flower-like Ag microstructures with a gemini surfactant as a directing agent for SERS applications. CrystEngComm 2017. [DOI: 10.1039/c7ce01573a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Various hierarchical Ag microstructures, including sensitive SERS substrate flower-like structures, can be designed and rapidly synthesized under different conditions.
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Affiliation(s)
- Yan Xia
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P.R. China
- Key Laboratory of Biomedical Polymers
| | - Zhinong Gao
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P.R. China
- Key Laboratory of Biomedical Polymers
| | - Xueming Liao
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P.R. China
- Key Laboratory of Biomedical Polymers
| | - Chenchen Pan
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P.R. China
- Key Laboratory of Biomedical Polymers
| | - Yingfang Zhang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P.R. China
- Key Laboratory of Biomedical Polymers
| | - Xuesong Feng
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P.R. China
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