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Author Spotlight: Exploring the Role of FAM83A in Cervical Cancer
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STAT3 exerts pro-tumor and anti-autophagy roles in cervical cancer

Lin Wu1,2, Bowen Shen3, Junpeng Li2

  • 1The First School of Clinical Medicine, Southern Medical University, Guangzhou, China.

Diagnostic Pathology
|January 21, 2022
PubMed
Abstract

Insights

Signal transducer and activator of transcription 3 (STAT3) may increase cervical cancer cell autophagy via the Bcl2-Beclin1 pathway. Inhibiting STAT3 could be a therapeutic strategy for cervical cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • STAT3 is implicated in cervical cancer progression.
  • STAT3 can downregulate LC3B, a key autophagy biomarker.
  • The precise role of STAT3 in cervical cancer autophagy is not fully understood.

Purpose of the Study:

  • To investigate the relationship between STAT3 and LC3B protein levels.
  • To determine if STAT3 inhibits cervical cancer cell autophagy via the Bcl2-Beclin1 axis.
  • To assess STAT3's impact on cancer cell proliferation, migration, and colony formation.

Main Methods:

  • Analysis of STAT3 and LC3B expression in cervical cancer tissues.
  • STAT3 knockout/knockdown experiments in vitro and in vivo.
  • Assessment of autophagy markers and cancer cell phenotypes.
  • Examination of Bcl2-Beclin1 complex interactions.

Main Results:

  • STAT3 was overexpressed and negatively correlated with LC3B in cervical cancer.
  • STAT3 inhibition/depletion enhanced autophagy and reduced cancer cell proliferation, migration, and tumorigenesis.
  • STAT3 positively correlated with Bcl2 and negatively with Beclin1, implicating the Bcl2-Beclin1 complex.

Conclusions:

  • STAT3 appears to upregulate cervical cancer cell autophagy through the Bcl2-Beclin1 axis.
  • STAT3 represents a potential prognostic and therapeutic target for cervical cancer.
Keywords:
AutophagyCervical cancerLC3BSTAT3

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