1
|
Shi C, Jian C, Wang L, Gao C, Yang T, Fu Z, Wu T. Dendritic cell hybrid nanovaccine for mild heat inspired cancer immunotherapy. J Nanobiotechnology 2023; 21:347. [PMID: 37752555 PMCID: PMC10521411 DOI: 10.1186/s12951-023-02106-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 09/14/2023] [Indexed: 09/28/2023] Open
Abstract
Cancer therapeutic vaccine can induce antigen-specific immune response, which has shown great potential in cancer immunotherapy. As the key factor of vaccine, antigen plays a central role in eliciting antitumor immunity. However, the insufficient antigen delivery and low efficiency of antigen presentation by dendritic cells (DCs) have greatly restricted the therapeutic efficiency of vaccine. Here we developed a kind of DC hybrid zinc phosphate nanoparticles to co-deliver antigenic peptide and photosensitive melanin. Owing to the chelating ability of Zn2+, the nanoparticles can co-encapsulate antigenic peptide and melanin with high efficiency. The nanovaccine showed good physiological stability with the hydration particle size was approximately 30 nm, and zeta potential was around - 10 mV. The nanovaccine showed homologous targeting effect to DCs in vivo and in vitro, efficiently delivering antigen to DCs. Meanwhile, the nanovaccine could effectively reflux to the tumor-draining lymph nodes. When combined with near-infrared irradiation, the nanovaccine induced effective mild heat in vitro and in vivo to promote antigen presentation. After administrating to MC38 tumor-bearing mice, the hybrid nanovaccine effectively promoted the maturation of DCs, the expansion of cytotoxic T lymphocytes and helper T cells, and the secretion of immunostimulatory cytokines, thereby significantly inhibiting tumor growth.
Collapse
Affiliation(s)
- Chen Shi
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Clinical Research Center for Precision Medicine for Critical Illness, Wuhan, 430022, China
| | - Chen Jian
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lulu Wang
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Chen Gao
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ting Yang
- Affiliated Hospital of Yunnan University, Kunming, 650000, China
| | - Zhiwen Fu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Clinical Research Center for Precision Medicine for Critical Illness, Wuhan, 430022, China
| | - Tingting Wu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
- Hubei Province Clinical Research Center for Precision Medicine for Critical Illness, Wuhan, 430022, China.
| |
Collapse
|
2
|
Conceição CJF, Moe E, Ribeiro PA, Raposo M. Liposome Formulations for the Strategic Delivery of PARP1 Inhibitors: Development and Optimization. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13101613. [PMID: 37242030 DOI: 10.3390/nano13101613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023]
Abstract
The development of a lipid nano-delivery system was attempted for three specific poly (ADP-ribose) polymerase 1 (PARP1) inhibitors: Veliparib, Rucaparib, and Niraparib. Simple lipid and dual lipid formulations with 1,2-dipalmitoyl-sn-glycero-3-phospho-rac-(1'-glycerol) sodium salt (DPPG) and 1,2-dipalmitoyl-sn-glycero-3-phosphocoline (DPPC) were developed and tested following the thin-film method. DPPG-encapsulating inhibitors presented the best fit in terms of encapsulation efficiency (>40%, translates into concentrations as high as 100 µM), zeta potential values (below -30 mV), and population distribution (single population profile). The particle size of the main population of interest was ~130 nm in diameter. Kinetic release studies showed that DPPG-encapsulating PARP1 inhibitors present slower drug release rates than liposome control samples, and complex drug release mechanisms were identified. DPPG + Veliparib/Niraparib presented a combination of diffusion-controlled and non-Fickian diffusion, while anomalous and super case II transport was verified for DPPG + Rucaparib. Spectroscopic analysis revealed that PARP1 inhibitors interact with the DPPG lipid membrane, promoting membrane water displacement from hydration centers. A preferential membrane interaction with lipid carbonyl groups was observed through hydrogen bonding, where the inhibitors' protonated amine groups may be the major players in the PARP1 inhibitor encapsulation mode.
Collapse
Affiliation(s)
- Carlota J F Conceição
- CEFITEC, Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Elin Moe
- Institute of Chemical and Biological Technology (ITQB NOVA), The New University of Lisbon, 2780-157 Oeiras, Portugal
- Department of Chemistry, UiT-The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Paulo A Ribeiro
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Maria Raposo
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| |
Collapse
|
3
|
Effect of melanin nanoparticles on the mechanical, water vapor barrier, and antioxidant properties of gelatin-based films for food packaging application. Food Packag Shelf Life 2019. [DOI: 10.1016/j.fpsl.2019.100363] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
4
|
Rodrigues VC, Moraes ML, Soares JC, Souza AL, Soares AC, Oliveira ON, Gonçalves D. Liposome-Based Biosensors Using Phytase Immobilized on Polypyrrole Films for Phytic Acid Determination. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Valquiria C. Rodrigues
- São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos-SP, Brazil
| | - Marli L. Moraes
- Institute of Science and Technology, Federal University of São Paulo, São José dos Campos-SP, Brazil
| | - Juliana C. Soares
- São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos-SP, Brazil
| | - Adriano L. Souza
- Federal University of São Carlos, Rod. Anhanguera Km 174, POBox 153, 13604-900 Araras-SP, Brazil
| | - Andrey C. Soares
- Institute of Science and Technology, Federal University of São Paulo, São José dos Campos-SP, Brazil
| | - Osvaldo N. Oliveira
- Institute of Science and Technology, Federal University of São Paulo, São José dos Campos-SP, Brazil
| | - Débora Gonçalves
- São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos-SP, Brazil
| |
Collapse
|
5
|
Pires F, Geraldo VP, Antunes A, Marletta A, Oliveira ON, Raposo M. On the role of epigallocatechin-3-gallate in protecting phospholipid molecules against UV irradiation. Colloids Surf B Biointerfaces 2019; 173:312-319. [DOI: 10.1016/j.colsurfb.2018.09.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 09/12/2018] [Accepted: 09/25/2018] [Indexed: 02/02/2023]
|
6
|
Tahri K, Duarte AA, Carvalho G, Ribeiro PA, da Silva MG, Mendes D, El Bari N, Raposo M, Bouchikhi B. Distinguishment, identification and aroma compound quantification of Portuguese olive oils based on physicochemical attributes, HS-GC/MS analysis and voltammetric electronic tongue. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:681-690. [PMID: 28671261 DOI: 10.1002/jsfa.8515] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 06/20/2017] [Accepted: 06/26/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND In this paper, various extra-virgin and virgin olive oils samples from different Portuguese markets were studied. For this purpose, a voltammetric electronic tongue (VE-tongue), consisting of two kinds of working electrode within the array, together with physicochemical analysis and headspace gas chromatography coupled with mass spectrometry (HS-GC-MS), were applied. In addition, preliminary considerations of relationships between physicochemical parameters and multisensory system were reported. RESULTS The physicochemical parameters exhibit significant differences among the analyzed olive oil samples that define its qualities. Regarding the aroma profile, 14 volatile compounds were characterized using HS-GC-MS; among these, hex-2-enal, hexanal, acetic acid, hex-3-ene-1-ol acetate and hex-3-en-1-ol were semi-quantitatively detected as the main aroma compounds in the analyzed samples. Moreover, pattern recognition methods demonstrate the discrimination power of the proposed VE-tongue system. The results reveal the VE-tongue's ability to classify olive oil samples and to identify unknown samples based of built models. In addition, the correlation between VE-tongue and physicochemical analysis exhibits a remarkable prediction model aimed at anticipating carotenoid content. CONCLUSION The preliminary results of this investigation indicate that physicochemical and HS-GC-MS analysis, together with multisensory system coupled with chemometric techniques, presented a satisfactory performance regarding olive oil sample discrimination and identification. © 2017 Society of Chemical Industry.
Collapse
Affiliation(s)
- Khalid Tahri
- Sensor Electronic and Instrumentation Group, Physics Department, Faculty of Sciences, Moulay Ismaïl University, Zitoune, Meknes, Morocco
- Biotechnology Agroalimentary and Biomedical Analysis Group, Biology Department, Faculty of Sciences, Moulay Ismaïl University, Zitoune, Meknes, Morocco
| | - Andreia A Duarte
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, UNL, Caparica, Portugal
| | - Gonçalo Carvalho
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, UNL, Caparica, Portugal
| | - Paulo A Ribeiro
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, UNL, Caparica, Portugal
| | - Marco Gomes da Silva
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, UNL, Caparica, Portugal
| | - Davide Mendes
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, UNL, Caparica, Portugal
| | - Nezha El Bari
- Biotechnology Agroalimentary and Biomedical Analysis Group, Biology Department, Faculty of Sciences, Moulay Ismaïl University, Zitoune, Meknes, Morocco
| | - Maria Raposo
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, UNL, Caparica, Portugal
| | - Benachir Bouchikhi
- Sensor Electronic and Instrumentation Group, Physics Department, Faculty of Sciences, Moulay Ismaïl University, Zitoune, Meknes, Morocco
| |
Collapse
|
7
|
Campos PP, Fraceto LF, Ferreira M. Layer-by-layer films containing emodin or emodin encapsulated in liposomes for transdermal applications. Colloids Surf B Biointerfaces 2017; 162:69-75. [PMID: 29154188 DOI: 10.1016/j.colsurfb.2017.11.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 11/07/2017] [Accepted: 11/10/2017] [Indexed: 12/22/2022]
Abstract
Dermal drug release systems are an important area of research because they can be applied to the skin in a non-invasive procedure using a lower concentration of drugs. In this study, we have developed two types of Layer-by-Layer (LbL) films for releasing emodin (EM). In one system, EM was intercalated with poly(ethylenimine) PEI and poly(vinyl sufonate) (PVS) polyelectrolytes, forming (PEI/PVS)2(PEI/EM)7; in another, EM was incorporated in liposomes obtained by mixing dipalmitoyl phosphatidyl glycerol (DPPG) and palmitoyl oleoyl phosphatidyl glycerol (POPG) lipids, forming (PEI/PVS)2(PEI/DPPG-POPG-EM)7. UV-vis and FTIR spectroscopies were used to characterize the LbL films. These showed that the depositions of material by LbL were efficient, with increases in the absorbance of each bilayer evidencing the presence of EM in the film. The (PEI/PVS)2(PEI/EM)7 and (PEI/PVS)2(PEI/DPPG-POPG-EM)7 films released EM in three and five days, respectively. The cyclic voltammetry (CV) assay of the (PEI/PVS)2(PEI/EM)7 results are in agreement with UV-vis measurements, which suggest that EM was protonated in acid environments, while the CV of (PEI/PVS)2(PEI/DPPG-POPG-EM)7 demonstrated distinct protonation behaviour for EM within the inner liposome structure, even in acid solutions. Therefore, this study presents two systems based on LbL films and provides additional details about the release of EM from these films to create a viable alternative for transdermal applications.
Collapse
Affiliation(s)
- Paula P Campos
- São Paulo State University (UNESP), Bauru School of Science, POSMAT, SP, Brazil
| | | | | |
Collapse
|
8
|
Ye Y, Wang C, Zhang X, Hu Q, Zhang Y, Liu Q, Wen D, Milligan J, Bellotti A, Huang L, Dotti G, Gu Z. A melanin-mediated cancer immunotherapy patch. Sci Immunol 2017; 2:2/17/eaan5692. [DOI: 10.1126/sciimmunol.aan5692] [Citation(s) in RCA: 221] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 10/11/2017] [Indexed: 12/13/2022]
|
9
|
Romio KB, dos Santos KF, da Silva RJ, Pedro MF, Kalck AS, da Silva Sousa M, Possamai LM, Souto PC, Silva JR, de Souza NC. Incorporation of triclosan and acridine orange into liposomes for evaluating the susceptibility of Candida albicans. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 173:514-521. [DOI: 10.1016/j.jphotobiol.2017.06.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 06/20/2017] [Accepted: 06/24/2017] [Indexed: 12/17/2022]
|
10
|
Gorza FDS, da Silva RJ, Trescher TF, Pedro GC, de Sousa MAO, Souto PCS, Silva JR, de Souza NC. Immobilization of chlorophyll by using layer-by-layer technique for controlled release systems and photodynamic inactivation. Photodiagnosis Photodyn Ther 2016; 15:147-55. [PMID: 27375091 DOI: 10.1016/j.pdpdt.2016.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 06/15/2016] [Accepted: 06/28/2016] [Indexed: 12/16/2022]
Abstract
The development of systems for the controlled release of drugs is important because they allow the control of drug absorption and tissue distribution and also can reduce local toxicity. This study aimed to assemble and characterize two types of release systems, consisting of layer-by-layer films obtained from poly(allylamine) hydrochloride with chlorophyll (PAH/CHL films) or chlorophyll incorporated into dipalmitoylphosphatidylcholine liposomes (PAH/Lip+CHL films). For these systems, the molecular aggregation, growth process, thermally stimulated desorption, wettability, and controlling release of CHL was studied by using UV-vis spectroscopy and wetting contact angle analysis. In addition, experiments of photodynamic inactivation using PAH/CHL or PAH/Lip+CHL films with a 633-nm laser light were performed and the susceptibility of Candida albicans (C. albicans) to this approach was examined. Fluorescence and atomic force microscopies were used to investigate the surface morphology after the application of the photoinactivation procedure. A redshift of the UV-vis spectrum associated to films when compared with the spectrum of the CHL solution indicated a molecular aggregation of CHL molecules in the films. The film growth process was determined by a nucleation and a growth of spheroids or rods for either PAH/Lip+CHL or PAH/CHL films, respectively. Thermally activated desorption experiments indicated that interactions between CHL and PAH (126kJ/mol) in PAH/CHL or between Lip+CHL and PAH (140kJ/mol) in PAH/Lip+CHL films may be governed by electrostatic interactions. The wettability of PAH/Lip+CHL films was larger than that for PAH/CHL films, which can be attributed to hydrophilic groups on the surface of the DPPC liposomes. Release experiments revealed that free CHL in PAH/CHL films was released more slowly than its partner incorporated into liposomes. After the photodynamic inactivation, results of survival fraction and fluorescence microscopy revealed that C. albicans presented similar susceptibility for the two kinds of films. AFM supported the fluorescence one suggesting that cell death of C. albicans may occur due to damages to its cell wall by C. albicans.
Collapse
Affiliation(s)
- Filipe D S Gorza
- Grupo de Materiais Nanoestruturados, Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - Romário J da Silva
- Grupo de Materiais Nanoestruturados, Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - Tarquin F Trescher
- Grupo de Materiais Nanoestruturados, Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - Graciela C Pedro
- Grupo de Materiais Nanoestruturados, Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - Maria A Oliveira de Sousa
- Grupo de Materiais Nanoestruturados, Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - Paula C S Souto
- Grupo de Materiais Nanoestruturados, Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - Josmary R Silva
- Grupo de Materiais Nanoestruturados, Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - Nara C de Souza
- Grupo de Materiais Nanoestruturados, Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil.
| |
Collapse
|
11
|
Miyazaki CM, Pereira TP, Mascagni DBT, de Moraes ML, Ferreira M. Monoamine oxidase B layer-by-layer film fabrication and characterization toward dopamine detection. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 58:310-5. [PMID: 26478315 DOI: 10.1016/j.msec.2015.08.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 08/13/2015] [Accepted: 08/22/2015] [Indexed: 12/15/2022]
Abstract
In this work nanostructured film composites of the monoamine oxidase B (MAO-B) enzyme, free or encapsulated in liposomes, were fabricated by the layer-by-layer (LbL) self-assembly technique, employing polyethylene imine (PEI) as polycation. Initially, the MAO-B enzyme was incorporated into liposomes in order to preserve its enzymatic structure ensuring their activity and catalytic stability. The LbL film growth was monitored by surface plasmon resonance (SPR) by gold resonance angle shift analysis after each bilayer deposition. Subsequently, the films were applied as amperometric biosensors for dopamine detection using Prussian Blue (PB) as the electron mediator. The biosensor fabricated by MAO-B incorporated into liposomes composed of DPPG:POPG in the ratio (1:4) (w/w) showed the best performance with a sensitivity of 0.86 (μA cm(-2))/(mmol L(-1)) and a detection limit of 0.33 mmol L(-1).
Collapse
Affiliation(s)
| | | | | | | | - Marystela Ferreira
- Universidade Federal de São Carlos, UFSCar, CCTS, Sorocaba, São Paulo, Brazil.
| |
Collapse
|
12
|
Duarte AA, Botelho do Rego AM, Salerno M, Ribeiro PA, El Bari N, Bouchikhi B, Raposo M. DPPG Liposomes Adsorbed on Polymer Cushions: Effect of Roughness on Amount, Surface Composition and Topography. J Phys Chem B 2015; 119:8544-52. [PMID: 26076391 DOI: 10.1021/acs.jpcb.5b02384] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The adsorption of intact liposomes onto solid supports is a fundamental issue when preparing systems with encapsulated biological molecules. In this work, the adsorption kinetic of 1,2-dipalmitoyl-sn-glycero-3-[phospho-rac-(1-glycerol)] (sodium salt) liposomes onto cushions prepared from commom polyelectrolytes by the layer-by-layer technique was investigated with the main objective of finding the surface conditions leading to the adsorption of intact liposomes. For this purpose, different cushion surface roughnesses were obtained by changing the number of cushion bilayers. The adsorbed amount per unit area was measured through quartz crystal microbalance, surface morphology was characterized by atomic force microscopy, and the surface composition was assessed by X-ray photoelectron spectroscopy. The results show that (1) the amount of adsorbed lipids depends on the number of cushion bilayers, (2) the cushions are uniformly covered by the adsorbed lipids, and (3) the surface morphology of polymer cushions tunes liposome rupture and its adsorption kinetics. The fraction of ruptured liposomes, calculated from the measured amount of adsorbed lipids, is a function of surface roughness together with other surface morphology parameters, namely the dominating in-plane spatial feature size, the fractal dimension, and other textural features as well as amplitude and hybrid parameters.
Collapse
Affiliation(s)
- Andreia A Duarte
- †CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Ana M Botelho do Rego
- ‡Centro de Química-Física Molecular and IN, Complexo Interdisciplinar, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisboa, Portugal
| | - Marco Salerno
- §Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Paulo A Ribeiro
- †CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Nezha El Bari
- ∥Biotechnology Agroalimentary and Biomedical Analysis Group, Moulay Ismaïl University, Faculty of Sciences, Biology Department, B.P. 11201, Zitoune, Meknes, Morocco
| | | | - Maria Raposo
- †CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| |
Collapse
|
13
|
Graça JS, de Oliveira RF, de Moraes ML, Ferreira M. Amperometric glucose biosensor based on layer-by-layer films of microperoxidase-11 and liposome-encapsulated glucose oxidase. Bioelectrochemistry 2014; 96:37-42. [PMID: 24491835 DOI: 10.1016/j.bioelechem.2014.01.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 12/27/2013] [Accepted: 01/04/2014] [Indexed: 12/22/2022]
Abstract
An important step in several bioanalytical applications is the immobilization of biomolecules. Accordingly, this procedure must be carefully chosen to preserve their biological structure and fully explore their properties. For this purpose, we combined the versatility of the layer-by-layer (LbL) method for the immobilization of biomolecules with the protective behavior of liposome-encapsulated systems to fabricate a novel amperometric glucose biosensor. To obtain the biosensing unit, an LbL film of the H2O2 catalyst polypeptide microperoxidase-11 (MP-11) was assembled onto an indium-tin oxide (ITO) electrode followed by the deposition of a liposome-encapsulated glucose oxidase (GOx) layer. The biosensor response toward glucose detection showed a sensitivity of 0.91±0.09 (μA/cm2)/mM and a limit of detection (LOD) of 8.6±1.1 μM, demonstrating an improved performance compared to similar biosensors with a single phospholipid-liposome or even containing a non-encapsulated GOx layer. Finally, glucose detection was also performed in a zero-lactose milk sample to demonstrate the potential of the biosensor for food analysis.
Collapse
Affiliation(s)
- J S Graça
- Federal University of São Carlos, UFSCar, Campus Sorocaba, 18052-780 Sorocaba, SP, Brazil.
| | - R F de Oliveira
- São Paulo State University, UNESP, Postgraduate Program in Materials Science and Technology, 17033-360 Bauru, SP, Brazil.
| | - M L de Moraes
- Federal University of São Paulo, UNIFESP, Campus São José dos Campos, 12231-280 São José dos Campos, SP, Brazil.
| | - M Ferreira
- Federal University of São Carlos, UFSCar, Campus Sorocaba, 18052-780 Sorocaba, SP, Brazil.
| |
Collapse
|
14
|
Duarte AA, Gomes PJ, Ribeiro JHF, Ribeiro PA, Hoffmann SV, Mason NJ, Oliveira ON, Raposo M. Characterization of PAH/DPPG layer-by-layer films by VUV spectroscopy. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2013; 36:98. [PMID: 24008406 DOI: 10.1140/epje/i2013-13098-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 07/03/2013] [Accepted: 07/03/2013] [Indexed: 06/02/2023]
Abstract
The spectroscopic characterization of layer-by-layer (LbL) films containing liposomes is essential not only for determining the precise film architecture but also to guide the design of drug delivery systems. In this study we provide the first report of vacuum ultraviolet spectroscopy (VUV) characterization of LbL films made with liposomes from 1.2-dipalmitoyl-sn-Glycero-3-[Phospho-rac-(1-glycerol)] (Sodium Salt) (DPPG) alternated with poly(allylamine hydrochloride) (PAH). Measurements in the 6.0-9.5eV range allowed us to identify the electronic transitions responsible for the spectra, which were assigned to carboxyl, hydroxyl and phosphate groups in DPPG while the PAH spectra were governed by electronic transitions in the amino groups. The surface mass density of the LbL films could be determined, from which the formation of a DPPG bilayer was inferred. This rupture of the liposomes into bilayers was confirmed with atomic force microscopy measurements. In subsidiary experiments we ensured that the UV irradiation in vacuum had negligible damage in the DPPG liposomes during the course of the VUV measurements. In addition to demonstrating the usefulness of VUV spectroscopy, the results presented here may be exploited in biological applications of liposome-containing films.
Collapse
Affiliation(s)
- Andreia A Duarte
- CEFITEC, Departamento de Fısica, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal
| | | | | | | | | | | | | | | |
Collapse
|
15
|
Xavier ACF, de Moraes ML, Ferreira M. Immobilization of aloin encapsulated into liposomes in Layer-by-layer films for transdermal drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1193-6. [DOI: 10.1016/j.msec.2012.12.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 10/25/2012] [Accepted: 12/02/2012] [Indexed: 10/27/2022]
|