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STATs: An Old Story, Yet Mesmerizing.

Saeid Abroun1, Najmaldin Saki2, Mohammad Ahmadvand1

  • 1Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.

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Signal transducers and activators of transcription (STATs) regulate cell fate. This review focuses on STAT3

Keywords:
JAKMalignancySTATSignaling PathwaysmiRNA

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Signal transducers and activators of transcription (STATs) are crucial cytoplasmic transcription factors mediating cell surface signals to the nucleus.
  • The Janus kinase (JAK)/STAT pathway, particularly STAT3, regulates fundamental cellular processes like proliferation, survival, and development.
  • Dysregulation of STAT3 is implicated in various cancers and hematopoietic disorders.

Purpose of the Study:

  • To review the Janus kinase (JAK)/STAT signaling pathway.
  • To elucidate the specific role of STAT3 in cell proliferation, survival, and development.
  • To examine the involvement of STAT3 in malignancy and the influence of microRNAs (miRNAs) on its activation in cancer.

Main Methods:

  • Literature review of JAK/STAT signaling pathways.
  • Focus on STAT3 activation via phosphorylation and its translocation to the nucleus.
  • Analysis of STAT3's role in cancer and the regulatory effects of miRNAs.

Main Results:

  • STAT3 activation controls cell proliferation, survival, and development by regulating nuclear genes.
  • Overexpression and activation of STAT3 are linked to increased proliferation and impaired differentiation in cancers.
  • MicroRNAs play a significant role in modulating STAT3 activation in specific cancer types.

Conclusions:

  • STAT3 is a critical regulator of cellular processes and a key player in the development of malignancies.
  • Targeting STAT3 and understanding miRNA-mediated regulation offer potential therapeutic strategies for cancer treatment.
  • Further research into the JAK/STAT pathway and its role in cancer is warranted.