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Qamhieh K. Effect of Dielectric Constant on the Zeta Potential of Spherical Electric Double Layers. Molecules 2024; 29:2484. [PMID: 38893363 PMCID: PMC11173410 DOI: 10.3390/molecules29112484] [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: 03/28/2024] [Revised: 04/19/2024] [Accepted: 04/23/2024] [Indexed: 06/21/2024] Open
Abstract
Zeta potential refers to the electrokinetic potential present in colloidal systems, exerting significant influence on the diverse properties of nano-drug delivery systems. The impact of the dielectric constant on the zeta potential and charge inversion of highly charged colloidal particles immersed in a variety of solvents spanning from polar, such as water, to nonpolar solvents and in the presence of multivalent salts was investigated through primitive Monte Carlo (MC) model simulations. Zeta potential, ξ, is decreased with the decreasing dielectric constant of the solvent and upon further increase in the salinity and the valency of the salt. At elevated levels of salt, the colloidal particles become overcharged in all solvents. As a result, their apparent charge becomes opposite in sign to the stoichiometric charge. This reversal of charge intensifies until reaching a saturation point with further increase in salinity.
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Affiliation(s)
- Khawla Qamhieh
- Department of Physics, College of Science and Technology, Al-Quds University, Jerusalem 20287, Palestine
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2
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Halder S, Paul M, Dyagala S, Aggrawal R, Aswal VK, Biswas S, Saha SK. Role of Gemini Surfactants with Variable Spacers and SiO 2 Nanoparticles in ct-DNA Compaction and Applications toward In Vitro/ In Vivo Gene Delivery. ACS APPLIED BIO MATERIALS 2023. [PMID: 37277159 DOI: 10.1021/acsabm.3c00256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Compaction of calf thymus DNA (ct-DNA) by two cationic gemini surfactants, 12-4-12 and 12-8-12, in the absence and presence of negatively charged SiO2 nanoparticles (NPs) (∼100 nm) has been explored using various techniques. 12-8-12 having a longer hydrophobic spacer induces a greater extent of ct-DNA compaction than 12-4-12, which becomes more efficient with SiO2 NPs. While 50% ct-DNA compaction in the presence of SiO2 NPs occurs at ∼77 nM of 12-8-12 and ∼130 nM of 12-4-12, but a conventional counterpart surfactant, DTAB, does it at its concentration as high as ∼7 μM. Time-resolved fluorescence anisotropy measurements show changes in the rotational dynamics of a fluorescent probe, DAPI, and helix segments in the condensed DNA. Fluorescence lifetime data and ethidium bromide exclusion assays reveal the binding sites of surfactants to ct-DNA. 12-8-12 with SiO2 NPs has shown the highest cell viability (≥90%) and least cell death in the human embryonic kidney (HEK) 293 cell lines in contrast to the cell viability of ≤80% for DTAB. These results show that 12-8-12 with SiO2 NPs has the highest time and dose-dependent cytotoxicity compared to 12-8-12 and 12-4-12 in the murine breast cancer 4T1 cell line. Fluorescence microscopy and flow cytometry are performed for in vitro cellular uptake of YOYO-1-labeled ct-DNA with surfactants and SiO2 NPs using 4T1 cells after 3 and 6 h incubations. The in vivo tumor accumulation studies are carried out using a real-time in vivo imaging system after intravenous injection of the samples into 4T1 tumor-bearing mice. 12-8-12 with SiO2 has delivered the highest amount of ct-DNA in cells and tumors in a time-dependent manner. Thus, the application of a gemini surfactant with a hydrophobic spacer and SiO2 NPs in compacting and delivering ct-DNA to the tumor is proven, warranting its further exploration in nucleic acid therapy for cancer treatment.
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Affiliation(s)
- Sayantan Halder
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Milan Paul
- Department of Pharmacy, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Shalini Dyagala
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Rishika Aggrawal
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai, Maharashtra 400085, India
| | - Swati Biswas
- Department of Pharmacy, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Subit K Saha
- Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
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Arora S, Sharma D, Layek B, Singh J. A Review of Brain-Targeted Nonviral Gene-Based Therapies for the Treatment of Alzheimer's Disease. Mol Pharm 2021; 18:4237-4255. [PMID: 34705472 DOI: 10.1021/acs.molpharmaceut.1c00611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Diseases of the central nervous system (CNS) are difficult to treat owing to the complexity of the brain and the presence of a natural blood-brain-barrier (BBB). Alzheimer's disease (AD) is one of the major progressive and currently incurable neurodegenerative disorders of the CNS, which accounts for 60-80% of cases of dementia. The pathophysiology of AD involves the accumulation of amyloid beta (Aβ) plaques and neurofibrillary tangles (NFTs) in the brain. Additionally, synaptic loss and imbalance of neuronal signaling molecules are characterized as important markers of AD. Existing treatments of AD help in the management of its symptoms and aim toward the maintenance of cognitive functions, behavior, and attenuation of gradual memory loss. Over the past decade, nonviral gene therapy has attracted increasing interest due to its various advantages over its viral counterparts. Moreover, advancements in nonviral gene technology have led to their increasing contributions in clinical trials. However, brain-targeted nonviral gene delivery vectors come across various extracellular and intracellular barriers, limiting their ability to transfer the therapeutic gene into the target cells. Chief barriers to nonviral gene therapy have been discussed briefly in this review. We have also highlighted the rapid advancement of several nonviral gene therapies for AD, which are broadly categorized into physical and chemical methods. These methods aim to modulate Aβ, beta-site amyloid precursor protein (APP) cleaving enzyme 1 (BACE1), apolipoprotein E, or neurotrophic factors' expression in the CNS. Overall, this review discusses challenges and recent advancements of nonviral gene therapy for AD.
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Affiliation(s)
- Sanjay Arora
- Department of Pharmaceutical Sciences, School of Pharmacy, College of Health Professions, North Dakota State University, Fargo, North Dakota 58105, United States
| | - Divya Sharma
- Department of Pharmaceutical Sciences, School of Pharmacy, College of Health Professions, North Dakota State University, Fargo, North Dakota 58105, United States
| | - Buddhadev Layek
- Department of Pharmaceutical Sciences, School of Pharmacy, College of Health Professions, North Dakota State University, Fargo, North Dakota 58105, United States
| | - Jagdish Singh
- Department of Pharmaceutical Sciences, School of Pharmacy, College of Health Professions, North Dakota State University, Fargo, North Dakota 58105, United States
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Neva T, Carbajo-Gordillo AI, Benito JM, Lana H, Marcelo G, Ortiz Mellet C, Tros de Ilarduya C, Mendicuti F, García Fernández JM. Tuning the Topological Landscape of DNA-Cyclodextrin Nanocomplexes by Molecular Design. Chemistry 2020; 26:15259-15269. [PMID: 32710799 DOI: 10.1002/chem.202002951] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Indexed: 12/25/2022]
Abstract
Original molecular vectors that ensure broad flexibility to tune the shape and surface properties of plasmid DNA (pDNA) condensates are reported herein. The prototypic design involves a cyclodextrin (CD) platform bearing a polycationic cluster at the primary face and a doubly linked aromatic module bridging two consecutive monosaccharide units at the secondary face that behaves as a topology-encoding element. Subtle differences at the molecular level then translate into disparate morphologies at the nanoscale, including rods, worms, toroids, globules, ellipsoids, and spheroids. In vitro evaluation of the transfection capabilities revealed marked selectivity differences as a function of nanocomplex morphology. Remarkably high transfection efficiencies were associated with ellipsoidal or spherical shapes with a lamellar internal arrangement of pDNA chains and CD bilayers. Computational studies support that the stability of such supramolecular edifices is directly related to the tendency of the molecular vector to form noncovalent dimers upon DNA templating. Because the stability of the dimers depends on the protonation state of the polycationic clusters, the coaggregates display pH responsiveness, which facilitates endosomal escape and timely DNA release, a key step in successful transfection. The results provide a versatile strategy for the construction of fully synthetic and perfectly monodisperse nonviral gene delivery systems uniquely suited for optimization schemes.
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Affiliation(s)
- Tania Neva
- Institute for Chemical Research, IIQ, CSIC-Univ. Sevilla, C/ Américo Vespucio 49, 41092, Sevilla, Spain
| | - Ana I Carbajo-Gordillo
- Institute for Chemical Research, IIQ, CSIC-Univ. Sevilla, C/ Américo Vespucio 49, 41092, Sevilla, Spain
| | - Juan M Benito
- Institute for Chemical Research, IIQ, CSIC-Univ. Sevilla, C/ Américo Vespucio 49, 41092, Sevilla, Spain
| | - Hugo Lana
- Department of Pharmaceutical Technology and Chemistry, School of Pharmacy and Nutrition, University of Navarra, 31080, Pamplona, Spain
| | - Gema Marcelo
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Instituto de Investigación Química, "Andrés M. del Rio" (IQAR), University of Alcalá, Campus Universitario Ctra. Madrid-Barcelona, Km 33.600, 28871, Alcalá de Henares, Spain
| | - Carmen Ortiz Mellet
- Department of Organic Chemistry, Faculty of Chemistry, University of Sevilla, C/ Prof García González 1, 41012, Sevilla, Spain
| | - Conchita Tros de Ilarduya
- Department of Pharmaceutical Technology and Chemistry, School of Pharmacy and Nutrition, University of Navarra, 31080, Pamplona, Spain
| | - Francisco Mendicuti
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Instituto de Investigación Química, "Andrés M. del Rio" (IQAR), University of Alcalá, Campus Universitario Ctra. Madrid-Barcelona, Km 33.600, 28871, Alcalá de Henares, Spain
| | - José M García Fernández
- Institute for Chemical Research, IIQ, CSIC-Univ. Sevilla, C/ Américo Vespucio 49, 41092, Sevilla, Spain
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Brandariz-Nuñez A, Robinson SJ, Evilevitch A. Pressurized DNA state inside herpes capsids-A novel antiviral target. PLoS Pathog 2020; 16:e1008604. [PMID: 32702029 PMCID: PMC7377361 DOI: 10.1371/journal.ppat.1008604] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 05/05/2020] [Indexed: 01/25/2023] Open
Abstract
Drug resistance in viruses represents one of the major challenges of healthcare. As part of an effort to provide a treatment that avoids the possibility of drug resistance, we discovered a novel mechanism of action (MOA) and specific compounds to treat all nine human herpesviruses and animal herpesviruses. The novel MOA targets the pressurized genome state in a viral capsid, "turns off" capsid pressure, and blocks viral genome ejection into a cell nucleus, preventing viral replication. This work serves as a proof-of-concept to demonstrate the feasibility of a new antiviral target-suppressing pressure-driven viral genome ejection-that is likely impervious to developing drug resistance. This pivotal finding presents a platform for discovery of a new class of broad-spectrum treatments for herpesviruses and other viral infections with genome-pressure-dependent replication. A biophysical approach to antiviral treatment such as this is also a vital strategy to prevent the spread of emerging viruses where vaccine development is challenged by high mutation rates or other evasion mechanisms.
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Affiliation(s)
- Alberto Brandariz-Nuñez
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | - Scott J. Robinson
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | - Alex Evilevitch
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- Department of Experimental Medical Science, Lund University, Lund, Sweden
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6
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Jativa SD, Thapar N, Broyles D, Dikici E, Daftarian P, Jiménez JJ, Daunert S, Deo SK. Enhanced Delivery of Plasmid DNA to Skeletal Muscle Cells using a DLC8-Binding Peptide and ASSLNIA-Modified PAMAM Dendrimer. Mol Pharm 2019; 16:2376-2384. [PMID: 30951315 DOI: 10.1021/acs.molpharmaceut.8b01313] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Skeletal muscle is ideally suited and highly desirable as a target for therapeutic gene delivery because of its abundance, high vascularization, and high levels of protein expression. However, efficient gene delivery to skeletal muscle remains a current challenge. Besides the major obstacle of cell-specific targeting, efficient intracellular trafficking, or the cytosolic transport of DNA to the nucleus, must be demonstrated. To overcome the challenge of cell-specific targeting, herein we develop a generation 5-polyamidoamine dendrimer (G5-PAMAM) functionalized with a skeletal muscle-targeted peptide, ASSLNIA (G5-SMTP). Specifically, to demonstrate the feasibility of our approach, we prepared a complex of our G5-SMTP dendrimer with a plasmid encoding firefly luciferase and investigated its delivery to skeletal muscle cells. Luciferase assays indicated a threefold increase in transfection efficiency of C2C12 murine skeletal muscle cells using G5-SMTP when compared with nontargeting nanocarriers using unmodified G5. To further improve the transfection yield, we employed a cationic dynein light chain 8 protein (DLC8)-binding peptide (DBP) containing an internal sequence known to bind to the DLC8 of the dynein motor protein complex. Complexation of DBP with our targeting nanocarrier, that is, G5-SMTP, and our luciferase plasmid cargo resulted in a functional nanocarrier that showed an additional sixfold increase in transfection efficiency compared with G5-SMTP transfection alone. To our knowledge, this is the first successful use of two different functional nanocarrier components that enable targeted skeletal muscle cell recognition and increased efficiency of intracellular trafficking to synergistically enhance gene delivery to skeletal muscle cells. This strategy of targeting and trafficking can also be universally applied to any cell/tissue type for which a recognition domain exists.
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Affiliation(s)
- Samuel D Jativa
- University of Miami Clinical and Translational Science Institute , Miami 33136 , United States
| | | | - David Broyles
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami , Miami 33136 , United States
| | - Emre Dikici
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami , Miami 33136 , United States
| | - Pirouz Daftarian
- JSR Micro, Life Sciences , 1280 North Matilda Avenue , Sunnyvale , California 94089 , United States
| | | | - Sylvia Daunert
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami , Miami 33136 , United States.,University of Miami Clinical and Translational Science Institute , Miami 33136 , United States
| | - Sapna K Deo
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami , Miami 33136 , United States.,University of Miami Clinical and Translational Science Institute , Miami 33136 , United States
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7
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Su Y, Quan X, Li L, Zhou J. Computer Simulation of DNA Condensation by PAMAM Dendrimer. MACROMOL THEOR SIMUL 2018. [DOI: 10.1002/mats.201700070] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yunxiang Su
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510460 China
| | - Xuebo Quan
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510460 China
| | - Libo Li
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510460 China
| | - Jian Zhou
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510460 China
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8
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Jorge AF, Nunes SC, Cova TF, Pais AA. Cooperative action in DNA condensation. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.09.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Huang YC, Su CJ, Chen CY, Chen HL, Jeng US, Berezhnoy NV, Nordenskiöld L, Ivanov VA. Elucidating the DNA–Histone Interaction in Nucleosome from the DNA–Dendrimer Complex. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00311] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yen-Chih Huang
- Department
of Chemical Engineering and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsin-Chu 30013, Taiwan
| | - Chun-Jen Su
- National Synchrotron Radiation Research Center, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Chun-Yu Chen
- National Synchrotron Radiation Research Center, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Hsin-Lung Chen
- Department
of Chemical Engineering and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsin-Chu 30013, Taiwan
| | - U-Ser Jeng
- National Synchrotron Radiation Research Center, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Nikolay V. Berezhnoy
- School
of Biological Sciences, Nanyang Technological University, 60 Nanyang
Drive, Singapore 637551, Singapore
| | - Lars Nordenskiöld
- School
of Biological Sciences, Nanyang Technological University, 60 Nanyang
Drive, Singapore 637551, Singapore
| | - Viktor A. Ivanov
- Physics
Department, Moscow State University, Moscow 119991, Russia
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Yang J, Zhang Q, Chang H, Cheng Y. Surface-Engineered Dendrimers in Gene Delivery. Chem Rev 2015; 115:5274-300. [DOI: 10.1021/cr500542t] [Citation(s) in RCA: 307] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jiepin Yang
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
| | - Qiang Zhang
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
| | - Hong Chang
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
| | - Yiyun Cheng
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
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11
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An M, Hutchison JM, Parkin SR, DeRouchey JE. Role of pH on the Compaction Energies and Phase Behavior of Low Generation PAMAM–DNA Complexes. Macromolecules 2014. [DOI: 10.1021/ma5020808] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Min An
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - James M. Hutchison
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Sean R. Parkin
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Jason E. DeRouchey
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
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