With the advanced GlycoCLICK™-based Vaccine Development platform, CD BioGlyco efficiently combines glycopeptides with multivalent lipopeptides to provide reliable vaccine development services for our clients. We provide a comprehensive one-stop service covering antigen discovery, solid phase synthesis, animal model building, and vaccine assessment. We tailor solutions to meet the special needs of our clients. Moreover, we also provide reliable Triazole Skeleton-based Vaccine and Carbohydrate Click-based Sugar-conjugated Vaccine Development services.
We provide synthetic services for a variety of substances including the synthesis of solid-phase glycopeptides, the synthesis of lipopeptide Pam3CysSer-(Lys)4-OH (Pam3CSK4), the synthesis of lipopeptides with functionalized toll-like receptor (TLR) ligands such as with mono-, di-, and tetravalent. All the compounds are purified multiple times to ensure that the impurities do not affect subsequent reactions.
After high-performance liquid chromatography (HPLC) purification, we couple the glycopeptides to the functionalized lipopeptides by click chemistry to obtain a multivalent glycopeptide-lipopeptide vaccine. We covalently couple antigens such as glycopeptides with the carrier proteins to enhance the immune response. Moreover, we provide accurate molecular weight determination services for synthetic vaccines with electrospray ionization quadrupole-time-of-flight mass spectrometry (ESI-QTOF-MS).
We use flow cytometry to detect the binding of antisera to antigens in cells. Meanwhile, the survival rate of tumor cells is determined by brominated 3-(4,5-dimtheylthiazol-2-yl)-2,5-diphenltetrazoliumbromide (MTT) assay, and the mortality rate is recorded by lactate dehydrogenase (LDH) assay. Moreover, we provide antibody potency analysis services.
Our research team provides animal models for assessing the immune responses elicited by synthetic vaccines. Culture for some time by intraperitoneal administration and immunization for specific periods. We use an enzyme-linked immunosorbent assay (ELISA) to detect the total induced antibodies.
Technology: CuI-mediated click reactions, ELISA, Flow cytometry
Journal: Angewandte Chemie International Edition in English
Published: 2014
IF: 16.6
Results: In this study, we reached the synthesis of mucin1 (MUC1) glycopeptides by coupling them to a multibranched lysine core via a cuprous iodide-mediated click reaction. We synthesized multivalent antitumor glycopeptide vaccines containing lipopeptides and MUC1 tandem repeat sequences of the membrane-attacking complex 1 (MAC1) antigen. After multiple analyses, it was shown that the clustering effect of the glycopeptide vaccine affects the Th1 response pathway during the immune response. The quadrivalent vaccine not only could induce antiserum binding but also initiated effective complement-dependent cytotoxicity (CDC)-mediated killing of tumor cells. Notably, the CDC was activated by alternative pathways.
Fig.1 Results analysis data of antibody isotype. (Cai, et al., 2014)
CD BioGlyco provides professional GlycoCLICK™-based vaccine development service. We have an efficient synthesis team and experienced staff to provide perfect service to our clients. For more information about the multivalent glycopeptide-lipopeptide vaccine development service, please feel free to
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