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Published in: EJNMMI Research 1/2019

Open Access 01-12-2019 | Positron Emission Tomography | Original research

Elimination of tumor hypoxia by eribulin demonstrated by 18F-FMISO hypoxia imaging in human tumor xenograft models

Authors: Songji Zhao, Wenwen Yu, Naoyuki Ukon, Chengbo Tan, Ken-ichi Nishijima, Yoichi Shimizu, Kei Higashikawa, Tohru Shiga, Hiroko Yamashita, Nagara Tamaki, Yuji Kuge

Published in: EJNMMI Research | Issue 1/2019

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Abstract

Background

Eribulin, an inhibitor of microtubule dynamics, shows antitumor potency against a variety of solid cancers through its antivascular activity and remodeling of tumor vasculature. 18F-Fluoromisonidazole (18F-FMISO) is the most widely used PET probe for imaging tumor hypoxia. In this study, we utilized 18F-FMISO to clarify the effects of eribulin on the tumor hypoxic condition in comparison with histological findings.

Material and methods

Mice bearing a human cancer cell xenograft were intraperitoneally administered a single dose of eribulin (0.3 or 1.0 mg/kg) or saline. Three days after the treatment, mice were injected with 18F-FMISO and pimonidazole (hypoxia marker for immunohistochemistry), and intertumoral 18F-FMISO accumulation levels and histological characteristics were determined. PET/CT was performed pre- and post-treatment with eribulin (0.3 mg/kg, i.p.).

Results

The 18F-FMISO accumulation levels and percent pimonidazole-positive hypoxic area were significantly lower, whereas the number of microvessels was higher in the tumors treated with eribulin. The PET/CT confirmed that 18F-FMISO distribution in the tumor was decreased after the eribulin treatment.

Conclusions

Using 18F-FMISO, we demonstrated the elimination of the tumor hypoxic condition by eribulin treatment, concomitantly with the increase in microvessel density. These findings indicate that PET imaging using 18F-FMISO may provide the possibility to detect the early treatment response in clinical patients undergoing eribulin treatment.
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Metadata
Title
Elimination of tumor hypoxia by eribulin demonstrated by 18F-FMISO hypoxia imaging in human tumor xenograft models
Authors
Songji Zhao
Wenwen Yu
Naoyuki Ukon
Chengbo Tan
Ken-ichi Nishijima
Yoichi Shimizu
Kei Higashikawa
Tohru Shiga
Hiroko Yamashita
Nagara Tamaki
Yuji Kuge
Publication date
01-12-2019
Publisher
Springer Berlin Heidelberg
Published in
EJNMMI Research / Issue 1/2019
Electronic ISSN: 2191-219X
DOI
https://doi.org/10.1186/s13550-019-0521-x

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