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Investigation and molecular mimicry of the antigen involved in the interaction between the monoclonal antibody 5D10 and the human breast cancer cell line MCF-7

Titelangaben

Vandevyver, Caroline ; Canarelli, Stéphane ; Bossen, Claudia ; Fisch, Igor ; Motmans, Kris ; Raus, Jef ; Freitag, Ruth:
Investigation and molecular mimicry of the antigen involved in the interaction between the monoclonal antibody 5D10 and the human breast cancer cell line MCF-7.
In: Biotechnology and Bioengineering. Bd. 97 (Juli 2007) Heft 4 . - S. 721-734.
ISSN 1097-0290
DOI: https://doi.org/10.1002/bit.21276

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Abstract

Monoclonal antibody (mAb) 5D10 is directed against the human breast cancer cell line MCF-7. Biochemical characterization of the antibody epitope was attempted and revealed a complex, most likely carbohydrate-linked nature, which prevented isolation and further studies of the interaction. A major goal of this work was to generate structural mimics of the 5D10 epitope to serve as putative substitutes in such studies. A peptide library displayed on filamentous phage was used to select for mimotope peptide sequences. All positive phage clones selected from the library displayed the amino acid sequence H(2)N-QMNPMYYR-CO(2)H. This peptide sequence, as well as a branched form of the peptide, was found to bind mAb 5D10. Moreover, both peptide sequences were able to inhibit the binding of 5D10 to the MCF-7 cells in a concentration-dependent manner, with an EC(50) value in the range of 65 microM. According to these results, random phage peptide libraries can serve to identify mimotopic peptides for unknown complex cell surface epitopes.

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: antibody, antigen mimicry, cancer, carbohydrate antigen, mimotope, peptide library, phage-display
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Bioprozesstechnik > Lehrstuhl Bioprozesstechnik - Univ.-Prof. Dr. Ruth Freitag
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Bioprozesstechnik
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
600 Technik, Medizin, angewandte Wissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
Eingestellt am: 24 Feb 2016 15:41
Letzte Änderung: 24 Feb 2016 15:41
URI: https://eref.uni-bayreuth.de/id/eprint/31047