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Roles of Krüpel-like factor 4 in normal homeostasis, cancer and stem cells

Paul M Evans1, Chunming Liu

  • 1Department of Biochemistry and Molecular Biology, Sealy Center for Cancer Cell Biology, University of Texas Medical Branch, Galveston, Texas 77555-1448, USA.

Acta Biochimica Et Biophysica Sinica
|July 8, 2008
PubMed

Insights

Krüppel-like factor 4 (KLF4) is a key transcription factor regulating cell differentiation and proliferation. This review details KLF4

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • Krüppel-like factor 4 (KLF4) is a transcription factor crucial for cellular processes.
  • KLF4 is expressed in various tissues, including intestinal and skin epithelium.
  • Its roles in cell differentiation, cell cycle arrest, and stem cell reprogramming are significant.

Purpose of the Study:

  • To summarize the diverse functions of Krüppel-like factor 4 (KLF4).
  • To elucidate the molecular mechanisms underlying KLF4's varied roles.
  • To provide a comprehensive overview of KLF4's biological activities.

Main Methods:

  • Literature review of studies on Krüppel-like factor 4 (KLF4).
  • Analysis of research on KLF4's transcriptional regulation.
  • Synthesis of findings regarding KLF4's function as a tumor suppressor or oncogene.

Main Results:

  • KLF4 exhibits context-dependent roles, acting as both an activator and repressor of transcription.
  • KLF4 can function as a tumor suppressor or an oncogene.
  • KLF4 is essential for reprogramming fibroblasts into induced pluripotent stem cells.

Conclusions:

  • Krüppel-like factor 4 (KLF4) possesses multifaceted functions in cellular biology.
  • Understanding KLF4's molecular mechanisms is key to its therapeutic potential.
  • KLF4's dual role in oncogenesis and pluripotency highlights its complex regulatory network.

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