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Longitudinal evaluation of the biodistribution and cellular internalization of the bispecific CD3xTRP1 antibody in syngeneic mouse tumor models.

Gerwin Gerhard Wemke SandkerJim MiddelburgEvienne WilbrinkJanneke Molkenboer-KuenenErik H J G AarntzenThorbald van HallSandra Heskamp
Published in: Journal for immunotherapy of cancer (2023)
We show that CD3xTRP1 efficiently targets TRP1-positive tumors and CD3-rich tissues primarily through receptor-mediated targeting. We further demonstrate rapid receptor-mediated internalization of CD3xTRP1 in TRP1-positive tumors and CD3-rich tissues. Even though this significantly decreases the therapeutical available dose, CD3xTRP1 still induced effective antitumor T-cell responses and inhibited tumor growth. Together, our data on the pharmacokinetics and mechanism of action of CD3xTRP1 pave the way for further optimization of CD3-bsAb therapies.
Keyphrases
  • gene expression
  • machine learning
  • cross sectional
  • artificial intelligence
  • positron emission tomography