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@ARTICLE{Zekri:271007,
author = {L. Zekri$^*$ and M. S. Lutz$^*$ and N. Prakash$^*$ and T.
Manz$^*$ and B. Klimovich$^*$ and S. Mueller$^*$ and S.
Hoerner$^*$ and I. Hagelstein$^*$ and M. Engel$^*$ and A.
Chashchina$^*$ and M. Pfluegler$^*$ and J. Heitmann$^*$ and
G. Jung$^*$ and H. Salih$^*$},
title = {{A}n optimized {I}g{G}-based {B}7-{H}3x{CD}3 bispecific
antibody for treatment of gastrointestinal cancers.},
journal = {Molecular therapy},
volume = {31},
number = {4},
issn = {1525-0016},
address = {New York, NY},
publisher = {Nature Publ. Group},
reportid = {DKFZ-2023-00360},
pages = {1033-1045},
year = {2023},
note = {2023 Apr 5;31(4):1033-1045},
abstract = {T cell-based immunotherapy has revolutionized oncological
treatment. However, many patients do not respond to
treatment, and long-term remissions remain rare,
particularly in gastrointestinal cancers like colorectal
cancer (CRC). B7-H3 is overexpressed in multiple cancer
entities including CRC on both, tumor cells and tumor
vasculature, the latter facilitating influx of effector
cells into the tumor site upon therapeutic targeting. We
generated a panel of T cell-recruiting B7-H3xCD3 bispecific
antibodies (bsAbs) and show that targeting a
membrane-proximal B7-H3 epitope allows for a 100-fold
reduction of CD3 affinity. In vitro, our lead compound CC-3
showed superior tumor cell killing, T cell activation,
proliferation and memory formation, whereas undesired
cytokine release was reduced. In vivo, CC-3 mediated potent
antitumor activity in three independent models using
immunocompromised mice adoptively transferred with human
effector cells with regard to prevention of lung metastasis
and flank tumor growth as well as elimination of large
established tumors. Thus, fine-tuning of both, target and
CD3 affinities as well as binding epitopes allowed for the
generation of a B7-H3xCD3 bsAb with promising therapeutic
activity. CC-3 is presently undergoing GMP production to
enable evaluation in a clinical 'first in human' study in
CRC.},
cin = {TU01},
ddc = {610},
cid = {I:(DE-He78)TU01-20160331},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:36793213},
doi = {10.1016/j.ymthe.2023.02.010},
url = {https://inrepo02.dkfz.de/record/271007},
}