[EN] MONOCLONAL IGM ANTIBODIES FROM ENTIRELY CARBOHYDRATE CONSTRUCTS [FR] ANTICORPS IGM MONOCLONAUX PRODUITS À PARTIR DE CONSTRUCTIONS ENTIÈREMENT GLUCIDIQUES
Immunological Response from an Entirely Carbohydrate Antigen: Design of Synthetic Vaccines Based on Tn−PS A1 Conjugates
摘要:
An entirely carbohydrate-based immunogen consisting of a zwitterionic polysaccharide (ZPS) PS A1 and the well-known tumor antigen Tn has been designed, synthesized, and studied for immunological effects. The PS A1 motif was included to act as an MHCII elicitor for a T-cell-dependent immune response with increased immunogenicity against tumor-associated carbohydrate antigens, providing an alternative to carrier proteins. Through the use of C57BL/6 mice, it has been shown that chemical modification of PS A1 does not alter the recognition sequence responsible for an MHCII-mediated, T-cell-dependent immune response. The Tn-PS A1 conjugate construct confers specificity toward the Tn antigen alone, and specific carbohydrate immunoglobulins, namely, IgG3, are generated from intraperitoneal immunizations with or without adjuvant. The properties of the vaccine candidate are attributed to a site-specific linking strategy that incurs significant incorporation of Tn antigen.
Immunological evaluation of the entirely carbohydrate-based Thomsen-Friedenreich – PS B conjugate
作者:Kevin R. Trabbic、Jean-Paul Bourgault、Mengchao Shi、Matthew Clark、Peter R. Andreana
DOI:10.1039/c6ob00176a
日期:——
PS B, a CD4+T-cell stimulating zwitterionic polysaccharide fromB. fragilis, was conjugated with aminooxy TF tumor antigen. Immunization revealed Ab specificity to TF. FACS revealed Ab binding to MCF-7 but not HCT-116 cells.