Preparation and Characterization of A Nanoliposomal Vaccine of pcLACK Candidate Against Cutaneous Leishmaniasis.
Leishmania major
encapsulation.
immunity
nanoliposomal
pcLACK
vaccine
Journal
Infectious disorders drug targets
ISSN: 2212-3989
Titre abrégé: Infect Disord Drug Targets
Pays: United Arab Emirates
ID NLM: 101269158
Informations de publication
Date de publication:
2021
2021
Historique:
received:
23
02
2020
revised:
01
07
2020
accepted:
11
08
2020
pubmed:
7
10
2020
medline:
16
10
2021
entrez:
6
10
2020
Statut:
ppublish
Résumé
Leishmaniasis is a public health problem and endemic in countries of the tropics and subtropics. An ongoing project with naked LACK (Leishmania homolog of receptors for activated C-kinase) demonstrated that this case of the gene is entirely susceptible to immune response and it does enter the cells effectively. This study aimed at developing a procedure to prepare a type of lipid nanoparticles overloaded with plasmid LACK (pcLACK) for usage as Leishmania major (L. major) nanoliposomal vaccine. The single-gene expression plasmid of pcLACK was encoded in the LACK antigen. Nanoparticles were set up by thin film procedure using cationic lipids 1, 2-Dioleoyl- 3-Trimethylammonium propane (DOTAP), 1, 2-Dioleoyl-snGlycero-3-Phosphoethanolamine (DOPE), and cholesterol in a molar proportion of 2:1:1 molar ratio. Using dynamic light scattering, the particle diameters of empty and loaded lipoplexes were measured in triplicate. The zeta-potential (ζ) was measured with the same instrument using the zeta potential mode as the average of 20 measurements by diluting the particles into a low salt buffer. The results of the sustainability studies of Liposome-pcLACK formulation showed that there were no significant physical changes up to the 30th day of stability study at the storage condition of 4°C. However, there were significant changes in the formulation content during storage at 25°C for 30 days (204.2±0.90 at Day 30 compared with 207.2±0.26 nm at Day 0). It was observed that the prepared nanoliposomal formulation had more stability under refrigeration. Immunostimulatory cationic lipids bearing a pcLACK encapsulation could serve as an effective delivery system.
Sections du résumé
BACKGROUND
BACKGROUND
Leishmaniasis is a public health problem and endemic in countries of the tropics and subtropics. An ongoing project with naked LACK (Leishmania homolog of receptors for activated C-kinase) demonstrated that this case of the gene is entirely susceptible to immune response and it does enter the cells effectively. This study aimed at developing a procedure to prepare a type of lipid nanoparticles overloaded with plasmid LACK (pcLACK) for usage as Leishmania major (L. major) nanoliposomal vaccine.
MATERIALS AND METHODS
METHODS
The single-gene expression plasmid of pcLACK was encoded in the LACK antigen. Nanoparticles were set up by thin film procedure using cationic lipids 1, 2-Dioleoyl- 3-Trimethylammonium propane (DOTAP), 1, 2-Dioleoyl-snGlycero-3-Phosphoethanolamine (DOPE), and cholesterol in a molar proportion of 2:1:1 molar ratio. Using dynamic light scattering, the particle diameters of empty and loaded lipoplexes were measured in triplicate. The zeta-potential (ζ) was measured with the same instrument using the zeta potential mode as the average of 20 measurements by diluting the particles into a low salt buffer.
RESULTS
RESULTS
The results of the sustainability studies of Liposome-pcLACK formulation showed that there were no significant physical changes up to the 30th day of stability study at the storage condition of 4°C. However, there were significant changes in the formulation content during storage at 25°C for 30 days (204.2±0.90 at Day 30 compared with 207.2±0.26 nm at Day 0). It was observed that the prepared nanoliposomal formulation had more stability under refrigeration.
CONCLUSION
CONCLUSIONS
Immunostimulatory cationic lipids bearing a pcLACK encapsulation could serve as an effective delivery system.
Identifiants
pubmed: 33019941
pii: IDDT-EPUB-110443
doi: 10.2174/1871526520666201005141159
doi:
Substances chimiques
Cations
0
Lipids
0
Liposomes
0
Vaccines
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
527-533Subventions
Organisme : Mazandaran University of Medical Sciences
ID : 8015
Informations de copyright
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