Application of in vivo ESR/spin-probe technique to monitor tumor in vivo in mouse footpad

Kazuhiro Ichikawa, Emiko Sakabe, Ken Ichiro Kuninobu, Takao Yamori, Takashi Tsuruo, Takashi Yao, Masazumi Tsuneyoshi, Hideo Utsumi

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    The redox status of tumors inoculated into the footpads of mice was investigated by using an in vivo ESR/spinprobe technique. A single-cell suspension of a metastatic subclone of colon carcinoma NL-17 was inoculated into the footpads of Balb/c mice. At 12, 24, 48, and 96 h after the inoculation, a spin probe, either carbamoyl-or carboxy-PROXYL, was intravenously injected, and then the ESR spectra of each footpad were separately obtained under a one-dimensional magnetic-field gradient. The change in the ESR signal intensity of the spin probe was closely related to the tumor volume in the footpads, but no significant difference was observed between carbamoyl- and carboxy-PROXYL. The in vivo ESR signal decay of carbamoyl-PROXYL, which is related to the conversion of the nitroxyl radical to hydroxylamine, was enhanced in the inoculated footpads but not in the reference one. The ESR signal decay was not influenced by coadministration of radical scavengers, SOD, catalase, mannitol, or dimethylthiourea, suggesting that the redox status but not reactive oxygen species generation played a role in the enhanced signal decay.

    Original languageEnglish
    Pages (from-to)1699-1707
    Number of pages9
    JournalAntioxidants and Redox Signaling
    Volume9
    Issue number10
    DOIs
    Publication statusPublished - Oct 1 2007

    Fingerprint

    Oxidation-Reduction
    Paramagnetic resonance
    Tumors
    Hydroxylamine
    Mannitol
    Magnetic Fields
    Tumor Burden
    Catalase
    Reactive Oxygen Species
    Neoplasms
    Suspensions
    Colon
    Carcinoma
    Magnetic fields
    1,3-dimethylthiourea
    nitroxyl

    All Science Journal Classification (ASJC) codes

    • Biochemistry
    • Physiology
    • Molecular Biology
    • Clinical Biochemistry
    • Cell Biology

    Cite this

    Ichikawa, K., Sakabe, E., Kuninobu, K. I., Yamori, T., Tsuruo, T., Yao, T., ... Utsumi, H. (2007). Application of in vivo ESR/spin-probe technique to monitor tumor in vivo in mouse footpad. Antioxidants and Redox Signaling, 9(10), 1699-1707. https://doi.org/10.1089/ars.2007.1719

    Application of in vivo ESR/spin-probe technique to monitor tumor in vivo in mouse footpad. / Ichikawa, Kazuhiro; Sakabe, Emiko; Kuninobu, Ken Ichiro; Yamori, Takao; Tsuruo, Takashi; Yao, Takashi; Tsuneyoshi, Masazumi; Utsumi, Hideo.

    In: Antioxidants and Redox Signaling, Vol. 9, No. 10, 01.10.2007, p. 1699-1707.

    Research output: Contribution to journalArticle

    Ichikawa, K, Sakabe, E, Kuninobu, KI, Yamori, T, Tsuruo, T, Yao, T, Tsuneyoshi, M & Utsumi, H 2007, 'Application of in vivo ESR/spin-probe technique to monitor tumor in vivo in mouse footpad', Antioxidants and Redox Signaling, vol. 9, no. 10, pp. 1699-1707. https://doi.org/10.1089/ars.2007.1719
    Ichikawa, Kazuhiro ; Sakabe, Emiko ; Kuninobu, Ken Ichiro ; Yamori, Takao ; Tsuruo, Takashi ; Yao, Takashi ; Tsuneyoshi, Masazumi ; Utsumi, Hideo. / Application of in vivo ESR/spin-probe technique to monitor tumor in vivo in mouse footpad. In: Antioxidants and Redox Signaling. 2007 ; Vol. 9, No. 10. pp. 1699-1707.
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