• Iron Chelation In Pancreatic Cancer

    From ironjustice@21:1/5 to All on Thu Jul 23 15:15:55 2020
    Invasion inhibition in pancreatic cancer using the oral iron chelating agent deferasirox
    BMC Cancer
    . 2020 Jul 22;20(1):681. doi: 10.1186/s12885-020-07167-8.
    Shogo Amano 1, Seiji Kaino 1, Shuhei Shinoda 1, Hirofumi Harima 1, Toshihiko Matsumoto 2, Koichi Fujisawa 1, Taro Takami 3, Naoki Yamamoto 1, Takahiro Yamasaki 2, Isao Sakaida 1
    Affiliations expand
    PMID: 32698792 DOI: 10.1186/s12885-020-07167-8
    Background: Iron is required for cellular metabolism, and rapidly proliferating cancer cells require more of this essential nutrient. Therefore, iron regulation may well represent a new avenue for cancer therapy. We have reported, through in vitro and in
    vivo research involving pancreatic cancer cell lines, that the internal-use, next-generation iron chelator deferasirox (DFX) exhibits concentration-dependent tumour-suppressive effects, among other effects. After performing a microarray analysis on the
    tumour grafts used in that research, we found that DFX may be able to suppress the cellular movement pathways of pancreatic cancer cells. In this study, we conducted in vitro analyses to evaluate the effects of DFX on the invasive and migratory abilities
    of pancreatic cancer cells.

    Methods: We used pancreatic cancer cell lines (BxPC-3, Panc-1, and HPAF II) to examine the efficacy of DFX in preventing invasion in vitro, evaluated using scratch assays and Boyden chamber assays. In an effort to understand the mechanism of action
    whereby DFX suppresses tumour invasion and migration, we performed G-LISA to examine the activation of Cdc42 and Rac1 which are known for their involvement in cellular movement pathways.

    Results: In our scratch assays, we observed that DFX-treated cells had significantly reduced invasive ability compared with that of control cells. Similarly, in our Boyden chamber assays, we observed that DFX-treated cells had significantly reduced
    migratory ability. After analysis of the Rho family of proteins, we observed a significant reduction in the activation of Cdc42 and Rac1 in DFX-treated cells.

    Conclusions: DFX can suppress the motility of cancer cells by reducing Cdc42 and Rac1 activation. Pancreatic cancers often have metastatic lesions, which means that use of DFX will suppress not only tumour proliferation but also tumour invasion, and we
    expect that this will lead to improved prognoses.

    Keywords: Cancer therapy; Deferasirox; Invasion; Iron chelation; Pancreatic cancer; Rho family protein.

    Grant support
    JP16H05287/Japan Society for the Promotion of Science (JSPS) KAKENHI JP19K17434/Japan Society for the Promotion of Science (JSPS) KAKENHI -­­­-----

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