1
|
Petukhov IA, Puchkov PA, Morozova NG, Zenkova MA, Maslov MA. The Synthesis and Transfection Activity of Disulfide Polycationic Amphiphiles. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2023; 49:41-51. [PMID: 37192981 PMCID: PMC10156423 DOI: 10.1134/s1068162023010235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/18/2022] [Accepted: 08/18/2022] [Indexed: 05/18/2023]
Abstract
Some new polycationic amphiphiles containing a disulfide group were synthesized. Cationic liposomes formed from the compounds synthesized and a helper lipid 1,2-dioleoyl-sn-glycero-3-phosphatidylethanolamine were not toxic for HEK293 and HeLa cells and were highly effective when delivering a fluorescently labeled oligodeoxyribonucleotide. The efficacy of plasmid DNA delivery depended on the cell line and the amphiphile structure, liposomes based on tetracationic amphiphiles being the most effective transfectants. These liposomes can be used for in vitro transfection of eukaryotic cells as well as for further in vivo biological studies.
Collapse
Affiliation(s)
- I. A. Petukhov
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
| | - P. A. Puchkov
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
| | - N. G. Morozova
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
| | - M. A. Zenkova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - M. A. Maslov
- Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
| |
Collapse
|
2
|
Puchkov PA, Shmendel EV, Luneva AS, Zenkova MA, Maslov MA. Position of Disulfide Bond Determines the Properties of Novel Stimuli‐Responsive Cationic Lipids. ChemistrySelect 2020. [DOI: 10.1002/slct.201904879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Pavel A. Puchkov
- Lomonosov Institute of Fine Chemical TechnologiesMIREA-Russian Technological University Vernadsky ave. 86 119571 Moscow Russia
| | - Elena V. Shmendel
- Lomonosov Institute of Fine Chemical TechnologiesMIREA-Russian Technological University Vernadsky ave. 86 119571 Moscow Russia
| | - Anastasia S. Luneva
- Lomonosov Institute of Fine Chemical TechnologiesMIREA-Russian Technological University Vernadsky ave. 86 119571 Moscow Russia
| | - Marina A. Zenkova
- Institute of Chemical Biology and Fundamental Medicine SB RAS Lavrentiev ave. 8 630090 Novosibirsk Russia
| | - Michael A. Maslov
- Lomonosov Institute of Fine Chemical TechnologiesMIREA-Russian Technological University Vernadsky ave. 86 119571 Moscow Russia
| |
Collapse
|
3
|
Singh P, Mukherjee D, Singha S, Sharma VK, Althagafi II, Ahmed SA, Mukhopadhyay R, Das R, Pal SK. Probing relaxation dynamics of a cationic lipid based non-viral carrier: a time-resolved fluorescence study. RSC Adv 2019; 9:35549-35558. [PMID: 35528090 PMCID: PMC9074709 DOI: 10.1039/c9ra06824d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/18/2019] [Indexed: 01/11/2023] Open
Abstract
Lipid vesicles composed of cationic dioctadecyldimethylammonium bromide (DODAB) and neutral 1-monooleoyl-rac-glycerol (MO) are promising non-viral carriers of nucleic acids for delivery into cells. Among them, higher cell transfection efficiency was displayed by DODAB-rich vesicles than those enriched with MO. Structural relaxation of these mixed lipid vesicles plays a key role in their cell transfection efficiency because structural organization of the DODAB-rich vesicles are different from that of the MO-rich vesicles. Polarization-gated anisotropy in conjunction with picosecond resolved emission transients of a novel fluorophore 6-acetyl-(2-((4-hydroxycyclohexyl)(methyl)amino)naphthalene) (ACYMAN) has been employed to probe relaxation dynamics in pure DODAB vesicles, and in mixed vesicles of DODAB with varying content of MO. Both orientational relaxation of ACYMAN and relaxation dynamics of its local environment are retarded significantly in mixed lipid vesicles with increasing MO content, from a mole fraction (χMO) of 0.2 to that of 0.8 which is consistent with increased rigidity of the MO-rich (χMO > 0.5) vesicles relative to the DODAB-rich (χMO < 0.5) vesicles. Therefore, higher structural rigidity of the MO-rich vesicles (χMO > 0.5) gives rise to their lower cell transfection efficiency than the more flexible DODAB-rich (χMO < 0.5) vesicles as observed in previous in vivo studies (Biochim. Biophys. Acta, Biomembr., 2014, 1838, 2555–2567). Lipid vesicles composed of cationic dioctadecyldimethylammonium bromide (DODAB) and neutral 1-monooleoyl-rac-glycerol (MO) are promising non-viral carriers of nucleic acids for delivery into cells.![]()
Collapse
Affiliation(s)
- Priya Singh
- Department of Chemical, Biological & Macromolecular Sciences
- S. N. Bose National Centre for Basic Sciences
- Kolkata 700106
- India
| | - Dipanjan Mukherjee
- Department of Chemical, Biological & Macromolecular Sciences
- S. N. Bose National Centre for Basic Sciences
- Kolkata 700106
- India
| | - Subhankar Singha
- Centre of Health Science &Technology
- JIS Institute of Advanced Studies
- Kolkata
- India
| | - V. K. Sharma
- Solid State Physics Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - Ismail I. Althagafi
- Chemistry Department
- Faculty of Applied Sciences
- Umm Al-Qura University
- 21955 Makkah Al-Mokarramma
- Saudi Arabia
| | - Saleh A. Ahmed
- Chemistry Department
- Faculty of Applied Sciences
- Umm Al-Qura University
- 21955 Makkah Al-Mokarramma
- Saudi Arabia
| | - R. Mukhopadhyay
- Solid State Physics Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - Ranjan Das
- Department of Chemistry
- West Bengal State University
- Kolkata 700126
- India
| | - Samir Kumar Pal
- Department of Chemical, Biological & Macromolecular Sciences
- S. N. Bose National Centre for Basic Sciences
- Kolkata 700106
- India
| |
Collapse
|
4
|
Puchkov PA, Perevoshchikova KA, Kartashova IA, Luneva AS, Kabilova TO, Morozova NG, Zenkova MA, Maslov MA. Polycationic amphiphiles based on triethylenetetramine and their transfection efficacy. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1068162017050107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
5
|
Puchkov PA, Kartashova IA, Shmendel EV, Luneva AS, Morozova NG, Zenkova MA, Maslov MA. Spacer structure and hydrophobicity influences transfection activity of novel polycationic gemini amphiphiles. Bioorg Med Chem Lett 2017. [DOI: 10.1016/j.bmcl.2017.06.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
6
|
Junquera E, Aicart E. Recent progress in gene therapy to deliver nucleic acids with multivalent cationic vectors. Adv Colloid Interface Sci 2016; 233:161-175. [PMID: 26265376 DOI: 10.1016/j.cis.2015.07.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 07/10/2015] [Accepted: 07/12/2015] [Indexed: 12/16/2022]
Abstract
Due to the potential use as transfecting agents of nucleic acids (DNA or RNA), multivalent cationic non-viral vectors have received special attention in the last decade. Much effort has been addressed to synthesize more efficient and biocompatible gene vectors able to transport nucleic acids into the cells without provoking an immune response. Among them, the mostly explored to compact and transfect nucleic acids are: (a) gemini and multivalent cationic lipids, mixed with a helper lipid, by forming lipoplexes; and (b) cationic polymers, polycations, and polyrotaxanes, by forming polyplexes. This review is focused on the progress and recent advances experimented in this area, mainly during the present decade, devoting special attention to the lipoplexes and polyplexes, as follows: (a) to its biophysical characterization (mainly electrostatics, structure, size and morphology) using a wide variety of experimental methods; and (b) to its biological activity (transfection efficacy and cytotoxicity) addressed to confirm the optimum formulations and viability of these complexes as very promising gene vectors of nucleic acids in nanomedicine.
Collapse
Affiliation(s)
- Elena Junquera
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - Emilio Aicart
- Grupo de Química Coloidal y Supramolecular, Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain.
| |
Collapse
|
7
|
Biophysical properties of cationic lipophosphoramidates: Vesicle morphology, bilayer hydration and dynamics. Colloids Surf B Biointerfaces 2015; 136:192-200. [PMID: 26398144 DOI: 10.1016/j.colsurfb.2015.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 08/10/2015] [Accepted: 09/06/2015] [Indexed: 02/04/2023]
Abstract
Cationic lipids are used to deliver genetic material to living cells. Their proper biophysical characterization is needed in order to design and control this process. In the present work we characterize some properties of recently synthetized cationic lipophosphoramidates. The studied compounds share the same structure of their hydrophobic backbone, but differ in their hydrophilic cationic headgroup, which is formed by a trimethylammonium, a trimethylarsonium or a dicationic moiety. Dynamic light scattering and cryo-transmission electron microscopy proves that the studied lipophosphoramidates create stable unilamellar vesicles. Fluorescence of polarity probe, Laurdan, analyzed using time-dependent fluorescence shift method (TDFS) and generalized polarization (GP) gives important information about the phase, hydration and dynamics of the lipophosphoramidate bilayers. While all of the compounds produced lipid bilayers that were sufficiently fluid for their potential application in gene therapy, their polarity/hydration and mobility was lower than for the standard cationic lipid - DOTAP. Mixing cationic lipophosphoramidates with DOPC helps to reduce this difference. The structure of the cationic headgroup has an important and complex influence on bilayer hydration and mobility. Both TDFS and GP methods are suitable for the characterization of cationic amphiphiles and can be used for screening of the newly synthesized compounds.
Collapse
|
8
|
Physicochemical and biological characterization of 1,2-dialkoylamidopropane-based lipoplexes for gene delivery. Biophys Chem 2015; 199:9-16. [DOI: 10.1016/j.bpc.2015.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 02/01/2015] [Accepted: 02/05/2015] [Indexed: 11/21/2022]
|
9
|
Kumar K, Barrán-Berdón AL, Datta S, Muñoz-Úbeda M, Aicart-Ramos C, Kondaiah P, Junquera E, Bhattacharya S, Aicart E. A delocalizable cationic headgroup together with an oligo-oxyethylene spacer in gemini cationic lipids improves their biological activity as vectors of plasmid DNA. J Mater Chem B 2015; 3:1495-1506. [DOI: 10.1039/c4tb01948b] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Lipoplexes of plasmid DNA and mixed liposomes, with a gemini cationic lipid of the 1,2-bis(hexadecyl imidazolium) oxyethylene series, improves their biological activity.
Collapse
Affiliation(s)
- Krishan Kumar
- Department of Organic Chemistry
- Indian Institute of Science
- 560012 Bangalore
- India
| | - Ana L. Barrán-Berdón
- Departments of Grupo de Química Coloidal y Supramolecular
- Departamento de Química Física I
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Sougata Datta
- Department of Organic Chemistry
- Indian Institute of Science
- 560012 Bangalore
- India
| | - Mónica Muñoz-Úbeda
- Departments of Grupo de Química Coloidal y Supramolecular
- Departamento de Química Física I
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Clara Aicart-Ramos
- Departamento de Bioquímica y Biología Molecular I
- Facultad de Ciencias Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Paturu Kondaiah
- Molecular Reproduction Development and Genetics
- Indian Institute of Science
- 560012 Bangalore
- India
| | - Elena Junquera
- Departments of Grupo de Química Coloidal y Supramolecular
- Departamento de Química Física I
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | | | - Emilio Aicart
- Departments of Grupo de Química Coloidal y Supramolecular
- Departamento de Química Física I
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| |
Collapse
|
10
|
High-throughput manufacturing of size-tuned liposomes by a new microfluidics method using enhanced statistical tools for characterization. Int J Pharm 2014; 477:361-8. [PMID: 25455778 DOI: 10.1016/j.ijpharm.2014.10.030] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Revised: 10/08/2014] [Accepted: 10/11/2014] [Indexed: 11/20/2022]
Abstract
Microfluidics has recently emerged as a new method of manufacturing liposomes, which allows for reproducible mixing in miliseconds on the nanoliter scale. Here we investigate microfluidics-based manufacturing of liposomes. The aim of these studies was to assess the parameters in a microfluidic process by varying the total flow rate (TFR) and the flow rate ratio (FRR) of the solvent and aqueous phases. Design of experiment and multivariate data analysis were used for increased process understanding and development of predictive and correlative models. High FRR lead to the bottom-up synthesis of liposomes, with a strong correlation with vesicle size, demonstrating the ability to in-process control liposomes size; the resulting liposome size correlated with the FRR in the microfluidics process, with liposomes of 50 nm being reproducibly manufactured. Furthermore, we demonstrate the potential of a high throughput manufacturing of liposomes using microfluidics with a four-fold increase in the volumetric flow rate, maintaining liposome characteristics. The efficacy of these liposomes was demonstrated in transfection studies and was modelled using predictive modeling. Mathematical modelling identified FRR as the key variable in the microfluidic process, with the highest impact on liposome size, polydispersity and transfection efficiency. This study demonstrates microfluidics as a robust and high-throughput method for the scalable and highly reproducible manufacture of size-controlled liposomes. Furthermore, the application of statistically based process control increases understanding and allows for the generation of a design-space for controlled particle characteristics.
Collapse
|
11
|
Barrán-Berdón AL, Misra SK, Datta S, Muñoz-Úbeda M, Kondaiah P, Junquera E, Bhattacharya S, Aicart E. Cationic gemini lipids containing polyoxyethylene spacers as improved transfecting agents of plasmid DNA in cancer cells. J Mater Chem B 2014; 2:4640-4652. [DOI: 10.1039/c4tb00389f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
12
|
Misra SK, Muñoz-Úbeda M, Datta S, Barrán-Berdón AL, Aicart-Ramos C, Castro-Hartmann P, Kondaiah P, Junquera E, Bhattacharya S, Aicart E. Effects of a delocalizable cation on the headgroup of gemini lipids on the lipoplex-type nanoaggregates directly formed from plasmid DNA. Biomacromolecules 2013; 14:3951-63. [PMID: 24083552 DOI: 10.1021/bm401079h] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Lipoplex-type nanoaggregates prepared from pEGFP-C3 plasmid DNA (pDNA) and mixed liposomes, with a gemini cationic lipid (CL) [1,2-bis(hexadecyl imidazolium) alkanes], referred as (C16Im)2Cn (where Cn is the alkane spacer length, n = 2, 3, 5, or 12, between the imidazolium heads) and DOPE zwitterionic lipid, have been analyzed by zeta potential, gel electrophoresis, SAXS, cryo-TEM, fluorescence anisotropy, transfection efficiency, fluorescence confocal microscopy, and cell viability/cytotoxicity experiments to establish a structure-biological activity relationship. The study, carried out at several mixed liposome compositions, α, and effective charge ratios, ρeff, of the lipoplex, demonstrates that the transfection of pDNA using CLs initially requires the determination of the effective charge of both. The electrochemical study confirms that CLs with a delocalizable positive charge in their headgroups yield an effective positive charge that is 90% of their expected nominal one, while pDNA is compacted yielding an effective negative charge which is only 10-25% than that of the linear DNA. SAXS diffractograms show that lipoplexes formed by CLs with shorter spacer (n = 2, 3, or 5) present three lamellar structures, two of them in coexistence, while those formed by CL with longest spacer (n = 12) present two additional inverted hexagonal structures. Cryo-TEM micrographs show nanoaggregates with two multilamellar structures, a cluster-type (at low α value) and a fingerprint-type, that coexist with the cluster-type at moderate α composition. The optimized transfection efficiency (TE) of pDNA, in HEK293T, HeLa, and H1299 cells was higher using lipoplexes containing gemini CLs with shorter spacers at low α value. Each lipid formulation did not show any significant levels of toxicity, the reported lipoplexes being adequate DNA vectors for gene therapy and considerably better than both Lipofectamine 2000 and CLs of the 1,2-bis(hexadecyl ammnoniun) alkane series, recently reported.
Collapse
Affiliation(s)
- Santosh K Misra
- Departments of ‡Organic Chemistry and ⊥Molecular Reproduction Development and Genetics, Indian Institute of Science , 560012 Bangalore, India
| | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Loizeau D, Le Gall T, Mahfoudhi S, Berchel M, Maroto A, Yaouanc JJ, Jaffrès PA, Lehn P, Deschamps L, Montier T, Giamarchi P. Physicochemical properties of cationic lipophosphoramidates with an arsonium head group and various lipid chains: A structure–activity approach. Biophys Chem 2013. [DOI: 10.1016/j.bpc.2012.10.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
14
|
Oliveira IMSC, Silva JPN, Feitosa E, Marques EF, Castanheira EMS, Real Oliveira MECD. Aggregation behavior of aqueous dioctadecyldimethylammonium bromide/monoolein mixtures: a multitechnique investigation on the influence of composition and temperature. J Colloid Interface Sci 2012; 374:206-17. [PMID: 22377488 DOI: 10.1016/j.jcis.2012.01.053] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 01/24/2012] [Accepted: 01/25/2012] [Indexed: 10/14/2022]
Abstract
A recently described non-viral gene delivery system [dioctadecyldimethylammonium bromide (DODAB)/monoolein (MO)] has been studied in detail to improve knowledge on the interactions between lamellar (DODAB) and non-lamellar-forming (MO) lipids, as a means to enhance their final cell transfection efficiency. Indeed, the morphology, fluidity, and size of these cationic surfactant/neutral lipid mixtures play an important role in the ability of these systems to complex nucleic acids. The different techniques used in this work, namely dynamic light scattering (DLS), fluorescence spectroscopy, differential scanning calorimetry (DSC), cryogenic transmission electron microscopy (cryo-TEM), light microscopy (LM), and surface pressure-area isotherms, allowed fully characterization of the phase behavior and aggregate morphology of DODAB/MO mixtures at different molar ratios. Overall, the results indicate that the final morphology of DODAB/MO aggregates depends on the balance between the tendency of DODAB to form zero-curvature bilayer structures and the propensity of MO to form non-bilayer structures with negative curvature. These results also show that in the MO-rich region, an increase in temperature has a similar effect on aggregate morphology as an increase in MO concentration.
Collapse
|
15
|
Moghaddam B, McNeil SE, Zheng Q, Mohammed AR, Perrie Y. Exploring the correlation between lipid packaging in lipoplexes and their transfection efficacy. Pharmaceutics 2011; 3:848-64. [PMID: 24309311 PMCID: PMC3857061 DOI: 10.3390/pharmaceutics3040848] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 11/07/2011] [Accepted: 11/10/2011] [Indexed: 11/29/2022] Open
Abstract
Whilst there is a large body of evidence looking at the design of cationic liposomes as transfection agents, correlates of formulation to function remain elusive. In this research, we investigate if lipid packaging can give further insights into transfection efficacy. DNA lipoplexes composed of 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE) or 1,2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE) in combination with 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) or 1,2-stearoyl-3-trimethylammonium-propane (DSTAP) were prepared by the lipid hydration method. Each of the formulations was prepared by hydration in dH2O or phosphate buffer saline (PBS) to investigate the effect of buffer salts on lipoplex physicochemical characteristics and in vitro transfection. In addition, Langmuir monolayer studies were performed to investigate any possible correlation between lipid packaging and liposome attributes. Using PBS, rather than dH2O, to prepare the lipoplexes increased the size of vesicles in most of formulations and resulted in variation in transfection efficacies. However, one combination of lipids (DSPE:DOTAP) could not form liposomes in PBS, whilst the DSPE:DSTAP combination could not form liposomes in either aqueous media. Monolayer studies demonstrated saturated lipid combinations offered dramatically closer molecular packing compared to the other combinations which could suggest why this lipid combination could not form vesicles. Of the lipoplexes prepared, those formulated with DSTAP showed higher transfection efficacy, however, the effect of buffer on transfection efficiency was formulation dependent.
Collapse
Affiliation(s)
- Behfar Moghaddam
- School of Life and Health Sciences, Aston University, Birmingham, B4 7ET, UK.
| | | | | | | | | |
Collapse
|
16
|
Giatrellis S, Nounesis G. Nucleic acid-lipid membrane interactions studied by DSC. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2011; 3:70-6. [PMID: 21430956 PMCID: PMC3053523 DOI: 10.4103/0975-7406.76470] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2010] [Revised: 10/19/2010] [Accepted: 10/19/2010] [Indexed: 11/04/2022] Open
Abstract
The interactions of nucleic acids with lipid membranes are of great importance for biological mechanisms as well as for biotechnological applications in gene delivery and drug carriers. The optimization of liposomal vectors for clinical use is absolutely dependent upon the formation mechanisms, the morphology, and the molecular organization of the lipoplexes, that is, the complexes of lipid membranes with DNA. Differential scanning calorimetry (DSC) has emerged as an efficient and relatively easy-to-operate experimental technique that can straightforwardly provide data related to the thermodynamics and the kinetics of the DNA-lipid complexation and especially to the lipid organization and phase transitions within the membrane. In this review, we summarize DSC studies considering nucleic acid-membrane systems, accentuating DSC capabilities, and data analysis. Published work involving cationic, anionic, and zwitterionic lipids as well as lipid mixtures interacting with RNA and DNA of different sizes and conformations are included. It is shown that despite limitations, issues such as DNA- or RNA-induced phase separation and microdomain lipid segregation, liposomal aggregation and fusion, alterations of the lipid long-range molecular order, as well as membrane-induced structural changes of the nucleic acids can be efficiently treated by systematic high-sensitivity DSC studies.
Collapse
Affiliation(s)
- Sarantis Giatrellis
- Department of Medical Biochemistry and Biophysics, Umeå University, SE-901 87 Umeå, Sweden
| | | |
Collapse
|
17
|
Rodríguez-Pulido A, Martín-Molina A, Rodríguez-Beas C, Llorca O, Aicart E, Junquera E. A theoretical and experimental approach to the compaction process of DNA by dioctadecyldimethylammonium bromide/zwitterionic mixed liposomes. J Phys Chem B 2010; 113:15648-61. [PMID: 19877682 DOI: 10.1021/jp906777g] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The compaction of DNA by cationic liposomes constituted by a mixture of a cationic lipid, dioctadecyldimethylammonium bromide (DODAB), and a zwitterionic lipid, 1,2-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE) or 1,2-dilauroyl-sn-glycero-3-phosphocholine (DLPC), has been evaluated by means of experimental studies (electrophoretic mobility, conductometry, cryogenic electron transmission microscopy or cryo-TEM, and fluorescence spectroscopy) as well as theoretical calculations. This information reveals that DODAB/DOPE and DODAB/DLPC liposomes are mostly spherical and unilamellar, with a mean diameter of around 70 and 61 nm, respectively, a bilayer thickness of 4.5 nm, and gel-to-fluid transition temperatures, T(m), of around 19 and 28 degrees C, respectively. Their positively charged surfaces efficiently compact the negatively charged DNA by means of a strong entropically driven surface interaction that yields DODAB/DOPE-DNA and DODAB/DLPC-DNA lipoplexes as confirmed by zeta potential and ethidium bromide fluorescence intercalation assays. These experiments have permitted as well the evaluation of the different microenvironments of varying polarity of the DNA helix, liposomes, and/or lipoplexes. DODAB/DOPE-DNA and DODAB/DLPC-DNA lipoplexes have been characterized by isoneutrality ratios (L/D)(phi) of around 4.7 and 4.8, respectively, a more fluid membrane than that of the parent liposomes, and T(m) around 24 and 28 degrees C, respectively, as revealed by fluorescence anisotropy. Cryo-TEM micrographs reveal a rich scenario of nanostructures and morphologies, from unilamellar DNA-coated liposomes to multilamellar lipoplexes passing through cluster-like structures. Phase diagrams (aggregation and re-entrant condensation phenomena), calculated by means of a phenomenological theory, have confirmed the experimental concentration domains and the isoneutrality conditions. The influence of helper lipid in the compaction process, as well as the optimum choice among those herein chosen, has been analyzed.
Collapse
Affiliation(s)
- Alberto Rodríguez-Pulido
- Departamento de Química Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040-Madrid, Spain
| | | | | | | | | | | |
Collapse
|
18
|
Pavinatto A, Pavinatto FJ, Barros-Timmons A, Oliveira ON. Electrostatic interactions are not sufficient to account for chitosan bioactivity. ACS APPLIED MATERIALS & INTERFACES 2010; 2:246-251. [PMID: 20356241 DOI: 10.1021/am900665z] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Recent studies involving chitosan interacting with phospholipid monolayers that mimic cell membranes have brought molecular-level evidence for some of the physiological actions of chitosan, as in removing a protein from the membrane. This interaction has been proven to be primarily of electrostatic origin because of the positive charge of chitosan in low pH solutions, but indirect evidence has also appeared of the presence of hydrophobic interactions. In this study, we provide definitive proof that model membranes are not affected merely by the charges in the amine groups of chitosan. Such a proof was obtained by comparing surface pressure and surface potential isotherms of dipalmitoyl phosphatidyl choline (DPPC) and dipalmitoyl phosphatidyl glycerol (DPPG) monolayers incorporating either chitosan or poly(allylamine hydrochloride) (PAH). As the latter is also positively charged and with the same charged functional group as chitosan, similar effects should be observed in case the electrical charge was the only relevant parameter. Instead, we observed a large expansion in the surface pressure isotherms upon interaction with chitosan, whereas PAH had much smaller effects. Of particular relevance for biological implications, chitosan considerably reduced the monolayer elasticity, whereas PAH had almost no effect. It is clear therefore that chitosan action depends strongly either on its functional uncharged groups and/or on its specific conformation in solution.
Collapse
Affiliation(s)
- Adriana Pavinatto
- Instituto de Fisica de Sao Carlos, Universidade de Sao Paulo, CP 369, 13566-590, Sao Carlos, Sao Paulo, Brazil
| | | | | | | |
Collapse
|
19
|
Medvedeva DA, Maslov MA, Serikov RN, Morozova NG, Serebrenikova GA, Sheglov DV, Latyshev AV, Vlassov VV, Zenkova MA. Novel cholesterol-based cationic lipids for gene delivery. J Med Chem 2009; 52:6558-68. [PMID: 19824650 DOI: 10.1021/jm901022t] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Gene therapy based on gene delivery is a promising strategy for the treatment of human disease. Here we present data on structure/biological activity of new biodegradable cholesterol-based cationic lipids with various heterocyclic cationic head groups and linker types. Enhanced accumulation of nucleic acids in the cells mediated by the lipids was demonstrated by fluorescent microscopy and flow cytometry. Light scattering and atomic force microscopy were used to find structure/transfection activity correlations for the lipids. We found that the ability of the lipids to stimulate intracellular accumulation of the oligodeoxyribonucleotides and plasmid DNA correlates well with their ability to form in solution lipid/NA complexes of sizes that do not exceed 100 nm. Screening of the lipids revealed the most promising transfection agents both in terms of low toxicity and efficient delivery: cholesterol-based lipids with positively charged pyridine and methyl imidazole head groups and either the ester or carbamate linker.
Collapse
Affiliation(s)
- Darya A Medvedeva
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, 8 Lavrentiev Avenue, Novosibirsk 630090, Russian Federation
| | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Chiaramoni NS, Gasparri J, Speroni L, Taira MC, Alonso SDV. Biodistribution of liposome/DNA systems after subcutaneous and intraperitoneal inoculation. J Liposome Res 2009; 20:191-201. [DOI: 10.3109/08982100903244518] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
21
|
The influence of size, lipid composition and bilayer fluidity of cationic liposomes on the transfection efficiency of nanolipoplexes. Colloids Surf B Biointerfaces 2009; 72:1-5. [PMID: 19395245 DOI: 10.1016/j.colsurfb.2009.03.018] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2009] [Revised: 03/01/2009] [Accepted: 03/08/2009] [Indexed: 11/21/2022]
Abstract
Among non-viral vectors, cationic liposomes are the most promising carriers in gene delivery. But the most critical issue about their application is their low transfection efficiency compared to viral vectors. In this study, we tried to make a comparison between transfection efficiency of different liposomal formulations and to investigate the effect of membrane fluidity and other physical properties of liposomes and lipoplexes such as size and charge ratio on the transfection efficiency in in vitro environment. Different gene delivery systems were developed by using liposomes composed of 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) or 3-beta-[N-(N'N'-dimethylaminoethane)-carbamoyl] cholesterol (DC-CHOL) in combination with other lipids including 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC), 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE), egg L-alpha-phosphatidylcholine (EPC) and 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE). These multilamellar vesicle (MLV) liposomes were extruded through 100 nm polycarbonate filters to produce small unilamellar vesicles (SUVs). Transfection activity of these lipoplexes in Neuro2A cells was tested using pRL-CMV encoding Renilla luciferase. We could not establish any direct correlation between high fluid membranes and high transfection efficiency because DOTAP:DPPE had a better result than DOTAP:DOPE while DC-CHOL:DOPE was more successful in gene transfer than DC-CHOL:DPPE. It was revealed that the use of these two helper lipids with different Tm (DPPE: 64 degrees C and DOPE: -11 degrees C) along with DOTAP increased transfection efficiency but formulation of these phospholipids with DC-CHOL was led to a significant reduction in transfection activity. Generally, DOTAP:DPPE, DC-CHOL:DOPE and DOTAP:DOPE:DPPE formulations showed the highest transfection activity. The results of this study showed that, in designing of liposome based non-viral vectors, different parameters such as size, lipid composition and the use of helper lipid should be considered.
Collapse
|
22
|
Bajaj A, Kondaiah P, Bhattacharya S. Effect of the Nature of the Spacer on Gene Transfer Efficacies of Novel Thiocholesterol Derived Gemini Lipids in Different Cell Lines: A Structure–Activity Investigation. J Med Chem 2008; 51:2533-40. [DOI: 10.1021/jm7010436] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Avinash Bajaj
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India, Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| | - Paturu Kondaiah
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India, Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India, Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| |
Collapse
|
23
|
Spelios M, Savva M. Novel N,N '-diacyl-1,3-diaminopropyl-2-carbamoyl bivalent cationic lipids for gene delivery--synthesis, in vitro transfection activity, and physicochemical characterization. FEBS J 2007; 275:148-62. [PMID: 18067582 DOI: 10.1111/j.1742-4658.2007.06185.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Novel N,N'-diacyl-1,3-diaminopropyl-2-carbamoyl bivalent cationic lipids were synthesized and their physicochemical properties in lamellar assemblies with and without plasmid DNA were evaluated to elucidate the structural requirements of these double-chained pH-sensitive surfactants for potent non-viral gene delivery and expression. The highest in vitro transfection efficacies were induced at +/-4:1 by the dimyristoyl, dipalmitoyl and dioleoyl derivatives 1,3lb2, 1,3lb3 and 1,3lb5, respectively, without inclusion of helper lipids. Transfection activities were reduced in the presence of either 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine alone or in combination with cholesterol for all derivatives except 1,3lb5, which maintained reporter gene expression levels at +/-4:1 and yielded increased lipofection activity at a lower charge ratio of +/-2:1. Ethidium bromide displacement indicated efficient plasmid DNA binding and compaction by the transfection-competent analogs. Dynamic light-scattering and electrophoretic mobility studies revealed lipoplexes of the active lipids with large particle sizes (mean diameter>or=500 nm) and zeta potentials with positive values (low ionic strength) or below neutrality (high ionic strength). Langmuir film balance studies showed high in-plane elasticity of these derivatives in isolation. In agreement with the monolayer experiments, fluorescence polarization studies verified the fluid nature of the highly transfection-efficient amphiphiles, with gel-to-liquid crystalline phase transitions below physiological temperature. The active compounds also interacted with endosome-mimicking vesicles to a greater extent than the poorly active derivative 1,3lb4, as revealed by fluorescence resonance energy transfer experiments. Taken together, the results suggest that well-hydrated and highly elastic cationic lipids with increased acyl chain fluidity and minimal cytotoxicity elicit high transfection activity.
Collapse
Affiliation(s)
- Michael Spelios
- Division of Pharmaceutical Sciences, Arnold & Marie Schwartz College of Pharmacy & Health Sciences, Long Island University, Brooklyn, NY 11201, USA
| | | |
Collapse
|