The sublingual route of allergens administration in allergen-specific immunotherapy (ASIT) is proven to be a successful way to treat patients with respiratory allergy. The trend of replacing natural extracts with purified recombinant allergens is growing. Although the purified allergens themselves are not good immunogens, the combined vector systems and adjuvans can improve their immunogenicity 1. Cell surfaces are decorated by different glycan structures, so the lectins specific for these glycans can be used to deliver particular therapeutic to target specific tissue 2. Banana lectin (BanLec) is mannose-specific protein which belongs to the subfamily of Jacalin related lectins 3. Apart from its characteristic to bind glycans, BanLec also modulates immune cells in vitro 4. On the other hand, Bet v 1 (Betula verrucosa) is the major birch pollen allergen. T-cell epitops are distributed over almost entire protein structure 5. In the study the recombinant BanLec-Bet v 1 construct is design...ed, produced by the recombinant DNA technology, purified and characterized by classical biochemical methods for the application in the ASIT of birch pollen allergy. The expression of newly designed BanLec-Bet v 1 was performed in E. coli BL21 (DE3). After expression the protein was found in the inclusion bodies from which it was extracted with 4 M urea solution. After renaturation, affinity chromatography (Sephadex G-75 superfine) was used for protein purification. Biochemical characterization of the chimera was performed by: SDS PAGE electrophoreses, CD spectroscopy and mass spectrometry. Biological activity of the construct was confirmed by binding of BanLecBet v 1 to a horseradish peroxidase glycoprotein in ELISA. Purified BanLec-Bet v 1 showed molecular mass of 32 kDa. CD spectra of the recombinant construct revealed well defined secondary structures with predominant beta sheets (41.2%). By mass spectrometry 51.8% of the BanLec-Bet v 1 primary structure was confirmed. Biologicaly active recombinant BanLec-Bet v 1 was produced by the recombinant DNA technology. Further in vitro and in vivo studies will evaluate immunomodulatory potential of BanLec-Bet v 1 for application in ASIT.
Source:
Serbian Biochemical Society Eighth Conference with international participation, “Coordination in Biochemistry and Life”, University of Novi Sad – Rectorate Hall, 16.11.2018. Novi Sad, Serbia, 2018, 177-178
TY - CONF
AU - Protić-Rosić, Isidora
AU - Popović, Milica
AU - Anđelković, Uroš
AU - Gavrović-Jankulović, Marija
PY - 2018
UR - http://cer.ihtm.bg.ac.rs/handle/123456789/3546
AB - The sublingual route of allergens administration in allergen-specific immunotherapy (ASIT) is proven to be a successful way to treat patients with respiratory allergy. The trend of replacing natural extracts with purified recombinant allergens is growing. Although the purified allergens themselves are not good immunogens, the combined vector systems and adjuvans can improve their immunogenicity 1. Cell surfaces are decorated by different glycan structures, so the lectins specific for these glycans can be used to deliver particular therapeutic to target specific tissue 2. Banana lectin (BanLec) is mannose-specific protein which belongs to the subfamily of Jacalin related lectins 3. Apart from its characteristic to bind glycans, BanLec also modulates immune cells in vitro 4. On the other hand, Bet v 1 (Betula verrucosa) is the major birch pollen allergen. T-cell epitops are distributed over almost entire protein structure 5. In the study the recombinant BanLec-Bet v 1 construct is designed, produced by the recombinant DNA technology, purified and characterized by classical biochemical methods for the application in the ASIT of birch pollen allergy. The expression of newly designed BanLec-Bet v 1 was performed in E. coli BL21 (DE3). After expression the protein was found in the inclusion bodies from which it was extracted with 4 M urea solution. After renaturation, affinity chromatography (Sephadex G-75 superfine) was used for protein purification. Biochemical characterization of the chimera was performed by: SDS PAGE electrophoreses, CD spectroscopy and mass spectrometry. Biological activity of the construct was confirmed by binding of BanLecBet v 1 to a horseradish peroxidase glycoprotein in ELISA. Purified BanLec-Bet v 1 showed molecular mass of 32 kDa. CD spectra of the recombinant construct revealed well defined secondary structures with predominant beta sheets (41.2%). By mass spectrometry 51.8% of the BanLec-Bet v 1 primary structure was confirmed. Biologicaly active recombinant BanLec-Bet v 1 was produced by the recombinant DNA technology. Further in vitro and in vivo studies will evaluate immunomodulatory potential of BanLec-Bet v 1 for application in ASIT.
PB - Serbian Biochemical Society
C3 - Serbian Biochemical Society Eighth Conference with international participation, “Coordination in Biochemistry and Life”, University of Novi Sad – Rectorate Hall, 16.11.2018. Novi Sad, Serbia
T1 - Production, purification and structural characterisation of recombinant BanLec-Bet v 1
SP - 177
EP - 178
ER -
@conference{
author = "Protić-Rosić, Isidora and Popović, Milica and Anđelković, Uroš and Gavrović-Jankulović, Marija",
year = "2018",
abstract = "The sublingual route of allergens administration in allergen-specific immunotherapy (ASIT) is proven to be a successful way to treat patients with respiratory allergy. The trend of replacing natural extracts with purified recombinant allergens is growing. Although the purified allergens themselves are not good immunogens, the combined vector systems and adjuvans can improve their immunogenicity 1. Cell surfaces are decorated by different glycan structures, so the lectins specific for these glycans can be used to deliver particular therapeutic to target specific tissue 2. Banana lectin (BanLec) is mannose-specific protein which belongs to the subfamily of Jacalin related lectins 3. Apart from its characteristic to bind glycans, BanLec also modulates immune cells in vitro 4. On the other hand, Bet v 1 (Betula verrucosa) is the major birch pollen allergen. T-cell epitops are distributed over almost entire protein structure 5. In the study the recombinant BanLec-Bet v 1 construct is designed, produced by the recombinant DNA technology, purified and characterized by classical biochemical methods for the application in the ASIT of birch pollen allergy. The expression of newly designed BanLec-Bet v 1 was performed in E. coli BL21 (DE3). After expression the protein was found in the inclusion bodies from which it was extracted with 4 M urea solution. After renaturation, affinity chromatography (Sephadex G-75 superfine) was used for protein purification. Biochemical characterization of the chimera was performed by: SDS PAGE electrophoreses, CD spectroscopy and mass spectrometry. Biological activity of the construct was confirmed by binding of BanLecBet v 1 to a horseradish peroxidase glycoprotein in ELISA. Purified BanLec-Bet v 1 showed molecular mass of 32 kDa. CD spectra of the recombinant construct revealed well defined secondary structures with predominant beta sheets (41.2%). By mass spectrometry 51.8% of the BanLec-Bet v 1 primary structure was confirmed. Biologicaly active recombinant BanLec-Bet v 1 was produced by the recombinant DNA technology. Further in vitro and in vivo studies will evaluate immunomodulatory potential of BanLec-Bet v 1 for application in ASIT.",
publisher = "Serbian Biochemical Society",
journal = "Serbian Biochemical Society Eighth Conference with international participation, “Coordination in Biochemistry and Life”, University of Novi Sad – Rectorate Hall, 16.11.2018. Novi Sad, Serbia",
title = "Production, purification and structural characterisation of recombinant BanLec-Bet v 1",
pages = "177-178"
}
Protić-Rosić, I., Popović, M., Anđelković, U.,& Gavrović-Jankulović, M.. (2018). Production, purification and structural characterisation of recombinant BanLec-Bet v 1. in Serbian Biochemical Society Eighth Conference with international participation, “Coordination in Biochemistry and Life”, University of Novi Sad – Rectorate Hall, 16.11.2018. Novi Sad, Serbia
Serbian Biochemical Society., 177-178.
Protić-Rosić I, Popović M, Anđelković U, Gavrović-Jankulović M. Production, purification and structural characterisation of recombinant BanLec-Bet v 1. in Serbian Biochemical Society Eighth Conference with international participation, “Coordination in Biochemistry and Life”, University of Novi Sad – Rectorate Hall, 16.11.2018. Novi Sad, Serbia. 2018;:177-178..
Protić-Rosić, Isidora, Popović, Milica, Anđelković, Uroš, Gavrović-Jankulović, Marija, "Production, purification and structural characterisation of recombinant BanLec-Bet v 1" in Serbian Biochemical Society Eighth Conference with international participation, “Coordination in Biochemistry and Life”, University of Novi Sad – Rectorate Hall, 16.11.2018. Novi Sad, Serbia (2018):177-178.
