Abstract
The tether employed to covalently attach β-mannan disaccharide glycoconjugates influences the specificity of rabbit antibodies that protect against Candida albicans. Two glycoconjugates containing (1 → 2)-β-mannan disaccharides linked to chicken serum albumin (CSA) either via a structurally uniform or via a stereodiversified spacer were prepared and evaluated in immunization trials in mice and rabbits. Immunization with conjugate vaccine possessing a structurally diversified linker induced higher IgG titers against Candida albicans cell wall phosphomannan than a conjugate with a structurally uniform linker. These results suggest that affinity maturation and the specific antibody response can be shifted towards recognition of the desired hapten by employing a linker with diversified configuration.
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Abbreviations
- BSA:
-
Bovine serum albumin
- CSA:
-
Chicken serum albumin
- TMSOTf:
-
Trimethylsilyl trifluoromethanesulfonate
- Pn14PS:
-
S. pneumoniae capsular polysaccharide type 14
- CRM197 :
-
Cross Reacting Materials 197 (diphtheria toxin-related protein)
- NMO:
-
N-Methylmorpholine N-oxide
- THF:
-
Tetrahydrofuran
- DCM:
-
Dichloromethane
- DMSO:
-
Dimethylsulfoxide
- DMF:
-
Dimethylformamide
- HSQC:
-
Heteronuclear Single Quantum Coherence experiment
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This work was supported by a Natural Science and Engineering Council of Canada Discovery grant to DRB and by funds from an Alberta Innovates Centres program.
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Lipinski, T., Luu, T., Kitov, P.I. et al. A structurally diversified linker enhances the immune response to a small carbohydrate hapten. Glycoconj J 28, 149–164 (2011). https://doi.org/10.1007/s10719-011-9331-8
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DOI: https://doi.org/10.1007/s10719-011-9331-8