Anti-carbohydrate antibodies immunization

Guar is a polysaccharide of galacto-mannan type [59], Guar was used to immunize rabbits to produce anti-carbohydrate antibodies. Inhibition experiments showed that galactose was an inhibitor but the mannose was not. Guar was subjected to periodate oxidation [37] and to oxidation by galactose oxidase [51], and in both cases the oxidized guar did not react with the... 

Antibodies directed against recombinant erythropoietin have been obtained from rabbits immunized with the hormone and Freunds complete adjuvant [64], Two sets of antibodies are present in the serum of rabbits that have been immunized, Fig. (3C). The results of oxidation of the erythropoietin with periodate, Fig. (25A), reaction of the antibodies with lectins of known carbohydrate specificity, Fig. (25B) and inhibition of the antibodies with the structural monosaccharide residues of the hormone, Fig. (26), have established the types of antibodies to be anti-carbohydrate antibodies and the immunodeterminants for these antibodies are oligosaccharides with the following structure N-acetyl neuraminyl a(2->3)... 

Antibodies with specificity for specific carbohydrate residues of antigens have been isolated from serum of rabbits immunized with carbohydrate containing antigens. Eighteen such antibodies were purified by affinity chromatography on adsorbents with ligands of carbohydrate residues. Electrofocusing results showed that all the antibodies occurred in multiprotein forms. A number of anti-carbohydrate antibodies have had useful applications. In the future additional advances with anti-carbohydrate antibodies should be made and these can lead to developments of new and improved products and processes. Some of the applications are summarized ... 

Anti-carbohydrate antibodies are those antibodies synthesized in the circulatory system of vertebrates that have been immunized by antigens containing carbohydrate units. Such carbohydrate components initiate an immune response and activate a specific number of circulating plasma... 

Immunization procedures vary and are dependent on type of antigen to be used, duration of immunization process, and the amounts of immune product needed. The antigen suspension may be administered intravenously, intramuscularly, or subcutaneously. The amount of antigen injected can range from 1 to 200 mg. The quantity is determined by the availability of and the potency of the antigen. The time schedule also varies. Protocols for the three types of immunizations used to produce anti-carbohydrate antibodies are recorded in the following. 

As is documented in Table 2, the induction of anti-carbohydrate immune responses has been successfully demonstrated for many peptides. However, certain challenges remain. Often, the induced antibody titer (concentration) directed against the carbohydrate is rather weak, especially in comparison to the anti-peptide response the majority of antibodies recognize the peptide presumably in a nonmimetic conformation. Several recent studies have investigated these immime responses in more detail, with an extensive analysis of antibody isotypes and adjuvant effects [70,75], the effect of different protein carriers [194], the use of DNA vaccines [48,195], and the demonstration of protection by passive immunization [72,75,194]. In several cases, the anti-carbohydrate immune response has also been shown to be protective against infection in mice [30,72,75,78], and these cases are probably the most promising for the development of vaccines. 

Anti-glycosyl antibodies isolated from the sera of some animals immunized with bacterial carbohydrate antigens are of a restricted heterogeneity, that is, they occur in relatively few, multimolecular forms.145 146 Such antibodies have been used in studies on the structure of antibodies,147 and on the genetic regulation of synthesis of anti-... 

Fig. 1.—Affinity chromatography elution pattern for anti-rhamnose antibodies in immune serum from Streptococcus mutans. The arrows indicate the point of application of the serum and of 0.5 M L-rhamnose solution. The inset is an agar-diffusion pattern of the antibodies against the antigen. (Reprinted from Carbohydrate Research, Volume 124, J. H. Pazur, M. S. Erikson, M. Tay, and P. Z. Allen, pp. 253-263, copyright 1983, with permission from Elsevier Science Ltd., The Boulevard, Langford Lane, Kidlington 0X5 1GB, UK.)...

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