2. Academic Validation
  3. C-Fos-activated circRPPH1 contributes to glioma stemness

C-Fos-activated circRPPH1 contributes to glioma stemness

  • Clin Transl Oncol. 2022 Dec 1. doi: 10.1007/s12094-022-03022-3.
Gang Xu 1,  Jianqiang Qu 2,  Ming Zhang 2,  Qian Wang 3
Affiliations

Affiliations

  • 1 Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an City, 710004, China. [email protected].
  • 2 Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an City, 710004, China.
  • 3 Health Management Department, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an City, 710004, China.
PMID: 36454517 DOI: 10.1007/s12094-022-03022-3
Abstract

Objective: Cancer Stem Cells or Cancer stemness has been confirmed to a major obstacle for glioma progression and it has also been reported that circRNAs play an important part in Cancer progression. This study mainly focuses on revealing the role of circRPPH1 and the underlying mechanisms in glioma cell stemness.

Methods: In vitro experiment including RT-qPCR, Western blot, sphere-formation analysis, and ALDH1 activity, and in vivo tumorigenesis experiments were performed to evaluate the effects of circRPPH1 on glioma cell stemness. Luciferase reporter, ChIP, and DNA pull-down analysis were used to reveal the underlying mechanisms.

Results: It was found that circRPPH1 level was upregulated in glioma cell spheres and facilitated the stemness of glioma cells; C-FOS transcriptionally activated circRPPH1 expression via directly binding to circRPPH1 promoter in glioma cells. Moreover, circRPPH1 promoted the stemness of glioma cells dependent on c-FOS-mediated transcriptional activation.

Conclusions: This study indicates that c-Fos-activated circRPPH1 contributes to glioma stemness and provides a potential target for glioma progression based on the c-FOS/circRPPH1 regulatory axis.

Keywords

Cancer stem cells; CircRPPH1; FOS; Glioma; Stemness.

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