89Zr/177Lu-labeled claudin-6 antibody exhibits effective targeted radiodiagnostic and therapeutic efficacy in gynecological cancers

Xiaofei Hao & Xiaobo Du et al. · 2026-02-27

Claudin 6 (CLDN6) is highly expressed in ovarian cancer (OV) and uterine corpus endometrial cancer (UCEC) but silenced in normal tissues, holding promise as an attractive target for radioimmunotherapy (RIT). This study aimed to develop zirconium-89 (⁸⁹Zr)/lutetium-177 (¹⁷⁷Lu)-labeled CLDN6 antibody (IMAB027) for immuno-positron emission tomography (immuno-PET) and RIT for OV and UCEC subcutaneous tumor models. IMAB027 was conjugated with p-SCN-Bn-DFO and DOTA-maleimide, followed by radiolabeling with
TL;DR

This study aimed to develop zirconium-89/lutetium-177 (⁸⁹Zr)/lutetium-177 (¹⁷⁷Lu)-labeled CLDN6 antibody (IMAB027) for immuno-positron emission tomography (immuno-PET) and RIT for OV and UCEC subcutaneous tumor models.

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Authors
Xiaofei Hao, Huan Du, Binwei Lin, Mingming Tang, Decai Wang, Huayan Zhang, Yu Zhang, Xia Yang, Xiaobo Du