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Träfflista för sökning "WFRF:(Ullén A) ;pers:(Nilsson B)"

Sökning: WFRF:(Ullén A) > Nilsson B

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  • Ullén, A, et al. (författare)
  • Use of anticytokeratin monoclonal anti-idiotypic antibodies to improve tumor : nontumor ratio in experimental radioimmunolocalization.
  • 1995
  • Ingår i: Cancer Research. - 0008-5472 .- 1538-7445. ; 55:23 Suppl, s. 5868s-5873s
  • Tidskriftsartikel (refereegranskat)abstract
    • A syngeneic, high-affinity, anti-idiotypic monoclonal antibody (MAb; alpha TS1) raised against an anticytokeratin monoclonal antibody (TS1) was evaluated as a second antibody to promote the rapid clearance of radiolabeled TS1 from the blood during experimental radioimmunolocalization. By using a novel biosensor technology (BIAcore), association rate dissociation rate, and affinity constants between the idiotype and the anti-idiotype could be determined. The in vivo results in nude mice carrying HeLa Hep 2 tumors demonstrate the possibility of selectively regulating the amount of the idiotypic 125I-labeled circulating MAb by in vivo injection of this high-affinity, anti-idiotypic antibody. Injection of the anti-idiotype in a molar ratio of 0.75 to the idiotype cleared the blood pool from circulating radiolabeled idiotype within 24 h, with a concomitant rapid excretion of 125I in urine. The total amount of remaining radioactivity in the animals decreased to 15-20% during these 24 h, with the tumors still retaining 60-65% of their initial radioactivity. This approach, using syngeneic primary and secondary MAbs with minimized immunogenicity, significantly improves the tumor:nontumor ratio, thus improving efficiency in experimental radioimmunolocalization and radioimmunotherapy, leaving the endogenous antibody repertoire of the host unaffected.
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