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Supplementary Figures 1-9 from Wnt Inhibitor Dickkopf-1 as a Target for Passive Cancer Immunotherapy

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posted on 2023-03-30, 19:28 authored by Nagato Sato, Takumi Yamabuki, Atsushi Takano, Junkichi Koinuma, Masato Aragaki, Ken Masuda, Nobuhisa Ishikawa, Nobuoki Kohno, Hiroyuki Ito, Masaki Miyamoto, Haruhiko Nakayama, Yohei Miyagi, Eiju Tsuchiya, Satoshi Kondo, Yusuke Nakamura, Yataro Daigo
Supplementary Figures 1-9 from Wnt Inhibitor Dickkopf-1 as a Target for Passive Cancer Immunotherapy

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ARTICLE ABSTRACT

Dickkopf-1 (DKK1) is an inhibitor of Wnt/β-catenin signaling that is overexpressed in most lung and esophageal cancers. Here, we show its utility as a serum biomarker for a wide range of human cancers, and we offer evidence favoring the potential application of anti-DKK1 antibodies for cancer treatment. Using an original ELISA system, high levels of DKK1 protein were found in serologic samples from 906 patients with cancers of the pancreas, stomach, liver, bile duct, breast, and cervix, which also showed elevated expression levels of DKK1. Additionally, anti-DKK1 antibody inhibited the invasive activity and the growth of cancer cells in vitro and suppressed the growth of engrafted tumors in vivo. Tumor tissues treated with anti-DKK1 displayed significant fibrotic changes and a decrease in viable cancer cells without apparent toxicity in mice. Our findings suggest DKK1 as a serum biomarker for screening against a variety of cancers, and anti-DKK1 antibodies as potential theranostic tools for diagnosis and treatment of cancer. Cancer Res; 70(13); 5326–36. ©2010 AACR.

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