IFI35 Promotes Renal Cancer Progression by Inhibiting pSTAT1/pSTAT6-Dependent Autophagy

Dafei Chai1,2,3,4, Shang Yuchen Shi5, Navid Sobhani4

  • 1Cancer Institute, Xuzhou Medical University, Xuzhou 221002, China.

Cancers
|June 24, 2022
PubMed

Insights

Interferon-induced protein 35 (IFI35) is elevated in renal cell cancer (RCC), promoting tumor growth. Reducing IFI35 inhibits RCC progression by activating autophagy via the pSTAT1/pSTAT6 pathway, suggesting IFI35 as a therapeutic target.

Area of Science:

  • Oncology
  • Immunology
  • Molecular Biology

Background:

  • Interferon-induced protein 35 (IFI35) regulates antiviral immune responses.
  • The role of IFI35 in renal cell cancer (RCC) pathogenesis is not well understood.

Purpose of the Study:

  • To investigate the expression, function, and therapeutic potential of IFI35 in RCC.
  • To elucidate the molecular mechanisms underlying IFI35's role in RCC progression.

Main Methods:

  • Analysis of IFI35 expression in RCC tissues and cell lines.
  • In vitro and in vivo studies involving IFI35 knockdown in RCC models.
  • Investigation of autophagy induction and STAT1/STAT6 signaling pathways.

Main Results:

  • IFI35 expression is significantly upregulated in RCC tissues and correlates with poor prognosis.
  • IFI35 knockdown suppresses RCC cell proliferation, migration, and metastasis in vitro and in vivo.
  • IFI35 knockdown induces autophagy via enhanced expression of autophagy-related genes (LC3-II, Beclin-1, ATG-5).
  • The tumor-suppressive effects of IFI35 knockdown are mediated by pSTAT1/pSTAT6-dependent autophagy.

Conclusions:

  • IFI35 promotes RCC progression through pSTAT1/pSTAT6-dependent autophagy.
  • IFI35 represents a potential diagnostic biomarker and therapeutic target for renal cell cancer.

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