BRMS1 participates in regulating cell sensitivity to DNA interstrand crosslink damage by interacting with FANCI

  • Authors:
    • Jianming Dou
    • Yiren Zhou
    • Xuni Liu
    • Xiaojing Qiao
    • Xi Yang
    • Wenjuan Xie
    • Shouyi Qiao
    • Yanhua Wu
  • View Affiliations

  • Published online on: October 24, 2018     https://doi.org/10.3892/or.2018.6816
  • Pages: 552-558
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Abstract

Breast cancer metastasis suppressor 1 (BRMS1) is a tumor metastasis suppressor implicated in multiple steps during the metastatic cascade. Many proteins interacting with BRMS1 have been identified to unravel the intracellular signaling mechanisms. In the present study, we report that FANCI is a novel interacting protein of BRMS1 as determined by co‑immunoprecipitation assay. The linker region between two coiled‑coil motifs of BRMS1 is required for BRMS1‑FANCI interaction. FANCI is an essential protein in the Fanconi anemia (FA) pathway responsible for the repair of DNA interstrand crosslinks (ICLs). We demonstrated that knockdown or knockout of BRMS1 significantly diminished the monoubiquitination of FANCI and FANCD2 in response to DNA ICL damage. BRMS1‑deficient cells exhibited suppressed FANCD2 foci formation and hypersensitivity to ICLs. Moreover, rescue assays by utilizing different BRMS1 constructs suggested that BRMS1‑FANCI interaction is necessary for the regulatory role of BRMS1 in the FA pathway. Overall, our findings characterize BRMS1 as a novel regulatory protein functioning in the DNA repair pathway via protein interaction.
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January-2019
Volume 41 Issue 1

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Dou J, Zhou Y, Liu X, Qiao X, Yang X, Xie W, Qiao S and Wu Y: BRMS1 participates in regulating cell sensitivity to DNA interstrand crosslink damage by interacting with FANCI. Oncol Rep 41: 552-558, 2019.
APA
Dou, J., Zhou, Y., Liu, X., Qiao, X., Yang, X., Xie, W. ... Wu, Y. (2019). BRMS1 participates in regulating cell sensitivity to DNA interstrand crosslink damage by interacting with FANCI. Oncology Reports, 41, 552-558. https://doi.org/10.3892/or.2018.6816
MLA
Dou, J., Zhou, Y., Liu, X., Qiao, X., Yang, X., Xie, W., Qiao, S., Wu, Y."BRMS1 participates in regulating cell sensitivity to DNA interstrand crosslink damage by interacting with FANCI". Oncology Reports 41.1 (2019): 552-558.
Chicago
Dou, J., Zhou, Y., Liu, X., Qiao, X., Yang, X., Xie, W., Qiao, S., Wu, Y."BRMS1 participates in regulating cell sensitivity to DNA interstrand crosslink damage by interacting with FANCI". Oncology Reports 41, no. 1 (2019): 552-558. https://doi.org/10.3892/or.2018.6816