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Bykov AG, Panaeva MA, Milyaeva OY, Michailov AV, Rafikova AR, Guzman E, Rubio R, Miller R, Noskov BA. Structural changes in layers of lipid mixtures at low surface tensions. Chem Phys Lipids 2024; 258:105365. [PMID: 38092233 DOI: 10.1016/j.chemphyslip.2023.105365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/21/2023] [Accepted: 12/06/2023] [Indexed: 12/21/2023]
Abstract
Layers of pulmonary lipids on an aqueous substrate at non-equilibrium conditions can decrease the surface tension of water to quite low values. This is connected with different relaxation processes occurring at the interface and the associated changes in the surface layer structure. Results of measurements by the combination of methods like surface rheology, ellipsometry, Brewster angle microscopy, and IRRAS for spread layers of lipid mixtures open a possibility to specify the dynamics of structural changes at conditions close to the physiological state. At sufficiently low surface tension values (below 5 mN/m) significant changes in the ellipsometric signal were observed for pure DPPC layers, which can be related to a transition from 2D to 3D structures caused by the layer folding. The addition of other lipids can accelerate the relaxation processes connected with squeezing-out of molecules or multilayer stacks formation hampering thereby a decrease of surface tension down to low values corresponding to the folding of the monolayer.
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Affiliation(s)
- A G Bykov
- St. Petersburg State University, St. Petersburg, the Russian Federation.
| | - M A Panaeva
- St. Petersburg State University, St. Petersburg, the Russian Federation
| | - O Y Milyaeva
- St. Petersburg State University, St. Petersburg, the Russian Federation
| | - A V Michailov
- St. Petersburg State University, St. Petersburg, the Russian Federation
| | - A R Rafikova
- St. Petersburg State University, St. Petersburg, the Russian Federation
| | - E Guzman
- Departamento de Química Física, Universidad Complutense de Madrid, Madrid, Spain; Instituto Pluridisciplinar, Universidad Complutense de Madrid, Madrid, Spain
| | - R Rubio
- Departamento de Química Física, Universidad Complutense de Madrid, Madrid, Spain; Instituto Pluridisciplinar, Universidad Complutense de Madrid, Madrid, Spain
| | - R Miller
- Institute for Soft Matter Physics, Technical University Darmstadt, 64289 Darmstadt, Germany
| | - B A Noskov
- St. Petersburg State University, St. Petersburg, the Russian Federation
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Guha P, Roy B, Nahak P, Karmakar G, Karak A, Bykov AG, Akentiev AB, Noskov BA, Dutta K, Ghosh C, Panda AK. Dendrimer Induced Bilayer Disintegration of Hybrid Vesicles. J Oleo Sci 2024; 73:547-562. [PMID: 38556288 DOI: 10.5650/jos.ess23097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024] Open
Abstract
Physicochemical investigations on the inclusion of anionic polyamidoaminesuccinamic acid dendrimer, generation 5 (PAMAM-SA, G5) with positively charged hybrid vesicles (HCV), prepared using soylecithin, ion pair amphiphile (IPA), cholesterol and dihexadecyldimethylammonium bromide, were investigated by dynamic light scattering, transmission electron/atomic force microscopy (TEM/AFM), differential scanning calorimetry, fluorescence spectroscopy and surface pressure-time isotherm studies. Adsorption of dendrimer onto vesicle surface and subsequent bilayer disruption strongly depends on the bilayer composition and dendrimer concentration. Change in the zeta potential value with increasing dendrimer concentration suggests the dendrimer-vesicle interaction to be electrostatic in nature. AFM studies also confirm the adsorption of dendrimer as well as hole formation in the bilayer. Impact of the inclusion of dendrimer into the bilayer were further investigated through differential scanning calorimetry by monitoring the chain melting temperature and enthalpy of the chain melting processes. Dendrimer at low concentration does not alter bilayer integrity, while hole formations are noted at higher dendrimer concentration. Fluorescence anisotropy studies confirm the adsorption and subsequent bilayer disruption due to dendrimer inclusion. Dendrimer induced vesicle disintegration kinetics conclusively illustrate the transformation of cationic bilayer to monolayer and thereby exposing the role of IPA. In vitro cytotoxicity studies on PAMAM-SA, G5 and HCVs mixtures against human breast cancer cell line suggest that dendrimer-liposome aggregates (dendriosomes) exhibit substantial anticancer activities with insignificant side effects. It is expected that the dendriosomes may have application to host and deliver anticancer drug in the field of targeted drug delivery.
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Affiliation(s)
- Pritam Guha
- Department of Chemistry, University of North Bengal
- Department for Biomaterials Research, Polymer Institute, Slovak Academy of Sciences
| | - Biplab Roy
- Department of Chemistry, University of North Bengal
- Chemistry of Interfaces Group, Luleå University of Technology
| | | | | | - Atanu Karak
- Department of Chemistry, Vidyasagar University
| | - Alexey G Bykov
- Department of Colloid Chemistry, St. Petersburg State University
| | | | - Boris A Noskov
- Department of Colloid Chemistry, St. Petersburg State University
| | - Kunal Dutta
- Department of Human Physiology, Vidyasagar University
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Roy B, Guha P, Chang CH, Nahak P, Karmakar G, Bykov AG, Akentiev AV, Noskov BA, Patra A, Dutta K, Ghosh C, Panda AK. Effect of cationic dendrimer on membrane mimetic systems in the form of monolayer and bilayer. Chem Phys Lipids 2024; 258:105364. [PMID: 38040405 DOI: 10.1016/j.chemphyslip.2023.105364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/01/2023] [Accepted: 11/26/2023] [Indexed: 12/03/2023]
Abstract
Interactions between a zwitterionic phospholipid, 1, 2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC) and four anionic phospholipids dihexadecyl phosphate (DHP), 1, 2-dimyristoyl-sn-glycero-3-phosphoglycerol (DMPG), 1, 2-dipalmitoyl-sn-glycero-3-phosphate (DPP) and 1, 2-dipalmitoyl-sn-glycero-3-phospho ethanol (DPPEth) in combination with an additional amount of 30 mol% cholesterol were separately investigated at air-buffer interface through surface pressure (π) - area (A) measurements. π-A isotherm derived parameters revealed maximum negative deviation from ideality for the mixtures comprising 30 mol% anionic lipids. Besides the film functionality, structural changes of the monomolecular films at different surface pressures in the absence and presence of polyamidoamine (PAMAM, generation 4), a cationic dendrimer, were visualised through Brewster angle microscopy and fluorescence microscopic studies. Fluidity/rigidity of monolayers were assessed by surface dilatational rheology studies. Effect of PAMAM on the formation of adsorbed monolayer, due to bilayer disintegration of liposomes (DPPC:anionic lipids= 7:3 M/M, and 30 mol% cholesterol) were monitored by surface pressure (π) - time (t) isotherms. Bilayer disintegration kinetics were dependent on lipid head group and chain length, besides dendrimer concentration. Such studies are considered to be an in vitro cell membrane model where the alteration of molecular orientation play important roles in understanding the nature of interaction between the dendrimer and cell membrane. Liposome-dendrimer aggregates were nontoxic to breast cancer cell line as well as in doxorubicin treated MDA-MB-468 cell line suggesting their potential as drug delivery systems.
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Affiliation(s)
- Biplab Roy
- Department of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India; Chemistry of Interfaces Group, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Pritam Guha
- Department of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India; Department for Biomaterials Research, Polymer Institute, Slovak Academy of Sciences, 845 41 Bratislava, Slovakia
| | - Chien-Hsiang Chang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Prasant Nahak
- Department of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Gourab Karmakar
- Department of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Alexey G Bykov
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Alexander V Akentiev
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Boris A Noskov
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Anuttam Patra
- Chemistry of Interfaces Group, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Kunal Dutta
- Department of Human Physiology, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Chandradipa Ghosh
- Department of Human Physiology, Vidyasagar University, Midnapore 721102, West Bengal, India
| | - Amiya Kumar Panda
- Department of Chemistry, Vidyasagar University, Midnapore 721102, West Bengal, India.
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Milyaeva OY, Akentiev AV, Bykov AG, Loglio G, Miller R, Portnaya I, Rafikova AR, Noskov BA. Dynamic Properties of Adsorption Layers of κ-Casein Fibrils. Langmuir 2023; 39:15268-15274. [PMID: 37867296 DOI: 10.1021/acs.langmuir.3c01950] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
The dynamic surface properties of native κ-casein solutions and aqueous dispersions of its fibrils differ significantly from the corresponding properties of the systems with globular proteins. The dependence of the dynamic surface elasticity of κ-casein solutions on surface pressure has a local maximum, indicating partial displacement of macromolecules from the proximal region of the surface layer to the distal one. This dependence becomes monotonic for fibril dispersions, similar to the results for dispersions of globular protein fibrils, but unlike the latter case, the surface elasticity close to the steady state reaches values that are approximately four times higher than the data for native protein solutions at the same concentrations.
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Affiliation(s)
- Olga Yu Milyaeva
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Alexander V Akentiev
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Alexey G Bykov
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Giuseppe Loglio
- Institute of Condensed Matter Chemistry and Energy Technology, 16149 Genova, Italy
| | - Reinhard Miller
- Institute of Condensed Matter Physics, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - Irina Portnaya
- CryoEM Laboratory of Soft Matter, Faculty of Biotechnology and Food Engineering, Technion - Israel Institute of Technology, Haifa 32000003, Israel
| | - Anastasiya R Rafikova
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Boris A Noskov
- Department of Colloid Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
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Milyaeva OY, Akentiev AV, Bykov AG, Lin SY, Loglio G, Miller R, Michailov AV, Rotanova KY, Noskov BA. Spread Layers of Lysozyme Microgel at Liquid Surface. Polymers (Basel) 2022; 14:polym14193979. [PMID: 36235927 PMCID: PMC9570608 DOI: 10.3390/polym14193979] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 09/16/2022] [Accepted: 09/20/2022] [Indexed: 11/30/2022] Open
Abstract
The spread layers of lysozyme (LYS) microgel particles were studied by surface dilational rheology, infrared reflection–absorption spectra, Brewster angle microscopy, atomic force microscopy, and scanning electron microscopy. It is shown that the properties of LYS microgel layers differ significantly from those of ß-lactoglobulin (BLG) microgel layers. In the latter case, the spread protein layer is mainly a monolayer, and the interactions between particles lead to the increase in the dynamic surface elasticity by up to 140 mN/m. In contrast, the dynamic elasticity of the LYS microgel layer does not exceed the values for pure protein layers. The compression isotherms also do not exhibit specific features of the layer collapse that are characteristic for the layers of BLG aggregates. LYS aggregates form trough three-dimensional clusters directly during the spreading process, and protein spherulites do not spread further along the interface. As a result, the liquid surface contains large, almost empty regions and some patches of high local concentration of the microgel particles.
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Affiliation(s)
- Olga Yu. Milyaeva
- Institute of Chemistry, St. Petersburg State University, Universitetsky pr. 26, St. Petersburg 198504, Russia
| | - Alexander V. Akentiev
- Institute of Chemistry, St. Petersburg State University, Universitetsky pr. 26, St. Petersburg 198504, Russia
| | - Alexey G. Bykov
- Institute of Chemistry, St. Petersburg State University, Universitetsky pr. 26, St. Petersburg 198504, Russia
| | - Shi-Yow Lin
- Chemical Engineering Department, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Giuseppe Loglio
- Institute of Condensed Matter Chemistry and Technologies for Energy, 16149 Genoa, Italy
| | - Reinhard Miller
- Physics Department, Technical University of Darmstadt, 64289 Darmstadt, Germany
| | - Alexander V. Michailov
- Institute of Chemistry, St. Petersburg State University, Universitetsky pr. 26, St. Petersburg 198504, Russia
| | - Ksenia Yu. Rotanova
- Institute of Chemistry, St. Petersburg State University, Universitetsky pr. 26, St. Petersburg 198504, Russia
| | - Boris A. Noskov
- Institute of Chemistry, St. Petersburg State University, Universitetsky pr. 26, St. Petersburg 198504, Russia
- Correspondence:
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Roy B, Guha P, Nahak P, Karmakar G, Maiti S, Mandal AK, Bykov AG, Akentiev AV, Noskov BA, Tsuchiya K, Torigoe K, Panda AK. Biophysical Correlates on the Composition, Functionality, and Structure of Dendrimer-Liposome Aggregates. ACS Omega 2018; 3:12235-12245. [PMID: 31459298 PMCID: PMC6645486 DOI: 10.1021/acsomega.8b01187] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 09/13/2018] [Indexed: 06/10/2023]
Abstract
Interaction between negatively charged liposomes and cationic polyamidoamine dendrimers of different generations was investigated through size, zeta potential, turbidity, electron microscopy, atomic force microscopy, fluorescence spectroscopy, and calorimetric studies. Liposomes with the binary combination of 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC) + dihexadecyl phosphate, DPPC + 1,2-dimyristoyl-sn-glycero-3-phosphoglycerol, DPPC + 1,2-dipalmitoyl-sn-glycero-3-phosphate, and DPPC + 1,2-dipalmitoyl-sn-glycero-3-phosphoethanol were stable up to 60 days. The electrostatic nature of dendrimer-lipid bilayer interaction was evidenced through charge neutralization and subsequent reversal upon added dendrimer to liposome. Dendrimer-liposome interaction depended on its generation (5 > 4 > 3) in addition to the charge, head groups, and hydrocarbon chain length of lipids. Fluorescence anisotropy and differential scanning calorimetry studies suggest the fluidization of the bilayer, although the surface rigidity was enhanced by the added dendrimers. Thermodynamic parameters of the interaction processes were evaluated by isothermal titration and differential scanning calorimetric studies. The binding processes were exothermic in nature. The enthalpy of transition of the chain melting of lipids decreased systematically with increasing dendrimer concentration and generation. Dendrimer-liposome aggregates were nontoxic to healthy human blood cell, suggesting the potential of such aggregates as drug delivery systems.
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Affiliation(s)
- Biplab Roy
- Department
of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Pritam Guha
- Department
of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Prasant Nahak
- Department
of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Gourab Karmakar
- Department
of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Souvik Maiti
- Proteomics
and Structural Biology Unit, CSIR-Institute
of Genomics and Integrative Biology, Mall Road, Delhi 110 007, India
| | - Amit Kumar Mandal
- Chemical
Biology Laboratory, Department of Sericulture, Raiganj University, Uttar Dinajpur 733134, West Bengal, India
| | - Alexey G. Bykov
- Department
of Colloid Chemistry, St. Petersburg State
University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Alexander V. Akentiev
- Department
of Colloid Chemistry, St. Petersburg State
University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Boris A. Noskov
- Department
of Colloid Chemistry, St. Petersburg State
University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Koji Tsuchiya
- Department
of Pure and Applied Chemistry, Tokyo University
of Science, 2641 Yamazaki, Noda, Tokyo 278-8510, Japan
| | - Kanjiro Torigoe
- Department
of Pure and Applied Chemistry, Tokyo University
of Science, 2641 Yamazaki, Noda, Tokyo 278-8510, Japan
| | - Amiya Kumar Panda
- Department
of Chemistry and Chemical Technology, Vidyasagar
University, Midnapore 721102, West Bengal, India
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Shchegolev AI, Bykov AG, Faizullina NM, Adamyan LV. Immunohistochemical Features of O6-Methylguanine-DNA Methyltransferase Expression during Ovarian Endometriosis. Bull Exp Biol Med 2018; 164:386-389. [PMID: 29308563 DOI: 10.1007/s10517-018-3995-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Indexed: 10/18/2022]
Abstract
A comparative immunohistochemical study for the expression of O6-methylguanine-DNA methyltransferase (MGMT) was performed in tissues of the eutopic endometrium and ovarian endometriosis. The highest level of MGMT expression in eutopic endometrial tissue was observed in epitheliocyte nuclei during the proliferative phase. In regions of endometriosis the expression of MGMT in epitheliocyte nuclei was shown to increase during stages I and II, but decreased in stages III and IV. The progression of endometriosis was accompanied by a gradual increase of study parameters in the nuclei and cytoplasm of stromal cells. These changes reflect the impairment of DNA reparation, which probably serves as a stage in the development and progression of endometriosis.
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Affiliation(s)
- A I Shchegolev
- V. I. Kulakov Research Center for Obstetrics, Gynecology, and Perinatology, Ministry of Healthcare of the Russian Federation, Moscow, Russia.
| | - A G Bykov
- V. I. Kulakov Research Center for Obstetrics, Gynecology, and Perinatology, Ministry of Healthcare of the Russian Federation, Moscow, Russia
| | - N M Faizullina
- V. I. Kulakov Research Center for Obstetrics, Gynecology, and Perinatology, Ministry of Healthcare of the Russian Federation, Moscow, Russia
| | - L V Adamyan
- V. I. Kulakov Research Center for Obstetrics, Gynecology, and Perinatology, Ministry of Healthcare of the Russian Federation, Moscow, Russia
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Bhattarai R, Sutradhar T, Roy B, Guha P, Chettri P, Mandal AK, Bykov AG, Akentiev AV, Noskov BA, Panda AK. Double-Tailed Cystine Derivatives as Novel Substitutes of Phospholipids with Special Reference to Liposomes. J Phys Chem B 2016; 120:10744-10756. [PMID: 27659807 DOI: 10.1021/acs.jpcb.6b06413] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ravi Bhattarai
- Department
of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Tanushree Sutradhar
- Department
of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Biplab Roy
- Department
of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Pritam Guha
- Department
of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | - Priyam Chettri
- Department
of Chemistry, University of North Bengal, Darjeeling 734013, West Bengal, India
| | | | - Alexey G. Bykov
- Department
of Colloid Chemistry, St. Petersburg State University, Universitetskii
pr. 26, 198504 St.
Petersburg, Russia
| | - Alexander V. Akentiev
- Department
of Colloid Chemistry, St. Petersburg State University, Universitetskii
pr. 26, 198504 St.
Petersburg, Russia
| | - Boris A. Noskov
- Department
of Colloid Chemistry, St. Petersburg State University, Universitetskii
pr. 26, 198504 St.
Petersburg, Russia
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Nahak P, Karmakar G, Chettri P, Roy B, Guha P, Besra SE, Soren A, Bykov AG, Akentiev AV, Noskov BA, Panda AK. Influence of Lipid Core Material on Physicochemical Characteristics of an Ursolic Acid-Loaded Nanostructured Lipid Carrier: An Attempt To Enhance Anticancer Activity. Langmuir 2016; 32:9816-25. [PMID: 27588340 DOI: 10.1021/acs.langmuir.6b02402] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The impact of saturation and unsaturation in the fatty acyl hydrocarbon chain on the physicochemical properties of nanostructured lipid carriers (NLCs) was investigated to develop novel delivery systems loaded with an anticancer drug, ursolic acid (UA). Aqueous NLC dispersions were prepared by a high-pressure homogenization-ultrasonication technique with Tween 80 as a stabilizer. Mutual miscibility of the components at the air-water interface was assessed by surface pressure-area measurements, where attractive interactions were recorded between the lipid mixtures and UA, irrespective of the extent of saturation or unsaturation in fatty acyl chains. NLCs were characterized by combined dynamic light scattering, transmission electron microscopy (TEM), atomic force microscopy (AFM), differential scanning calorimetry, drug encapsulation efficiency, drug payload, in vitro drug release, and in vitro cytotoxicity studies. The saturated lipid-based NLCs were larger than unsaturated lipids. TEM and AFM images revealed the spherical and smooth surface morphology of NLCs. The encapsulation efficiency and drug payload were higher for unsaturated lipid blends. In vitro release studies indicate that the nature of the lipid matrix affects both the rate and release pattern. All UA-loaded formulations exhibited superior anticancer activity compared to that of free UA against human leukemic cell line K562 and melanoma cell line B16.
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Affiliation(s)
- Prasant Nahak
- Department of Chemistry, University of North Bengal , Darjeeling 734 013, West Bengal, India
| | - Gourab Karmakar
- Department of Chemistry, University of North Bengal , Darjeeling 734 013, West Bengal, India
| | - Priyam Chettri
- Department of Biotechnology, University of North Bengal , Darjeeling 734 013, West Bengal, India
| | - Biplab Roy
- Department of Chemistry, University of North Bengal , Darjeeling 734 013, West Bengal, India
| | - Pritam Guha
- Department of Chemistry, University of North Bengal , Darjeeling 734 013, West Bengal, India
| | - Shila Elizabeth Besra
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology , 4, Raja S. C. Mullick Road, Kolkata 700032,West Bengal, India
| | - Anjana Soren
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology , 4, Raja S. C. Mullick Road, Kolkata 700032,West Bengal, India
| | - Alexey G Bykov
- Department of Colloid Chemistry, St. Petersburg State University , Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Alexander V Akentiev
- Department of Colloid Chemistry, St. Petersburg State University , Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Boris A Noskov
- Department of Colloid Chemistry, St. Petersburg State University , Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Amiya Kumar Panda
- Department of Chemistry and Chemical Technology, Vidyasagar University , Midnapore 721 102, West Bengal, India
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Bykov AG, Noskov BA, Loglio G, Lyadinskaya VV, Miller R. Dilational surface elasticity of spread monolayers of polystyrene microparticles. Soft Matter 2014; 10:6499-6505. [PMID: 25046357 DOI: 10.1039/c4sm00782d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The dependence of the dilational surface elasticity on the surface pressure of the spread monolayers of polystyrene microparticles is studied at the water-air interface. The surface rheological measurements together with the data from optical methods allow the division of the whole range of surface pressures into three zones characterized by different monolayer structures. The extremely high surface elasticity (∼500 mN m(-1)) at surface pressures close to 30 mN m(-1) is similar to the results for the adsorption layer of the complexes formed between silica particles and surfactant molecules and is probably caused by strong hydrophobic attraction between the particles. At the same time, some other characteristic features of the viscoelasticity of the monolayers of polysterene microparticles differ strongly from the properties of previously studied systems.
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Affiliation(s)
- A G Bykov
- Saint Petersburg State University, Universitetsky pr. 26, Peterhof, Saint Petersburg, Russia.
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Bykov AG, Lin SY, Loglio G, Lyadinskaya VV, Miller R, Noskov BA. Impact of surfactant chain length on dynamic surface properties of alkyltrimethylammonium bromide/polyacrylic acid solutions. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2009.09.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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