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The emerging multiple roles of nuclear Akt

Alberto M Martelli1, Giovanna Tabellini, Daniela Bressanin

  • 1Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy. alberto.martelli@unibo.it

Biochimica Et Biophysica Acta
|September 11, 2012
PubMed

Insights

Akt, a key signaling protein, plays crucial roles in cell survival and metabolism. Recent findings show active Akt in the nucleus, influencing DNA repair, cell cycle, and cancer development.

Area of Science:

  • Cellular Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Akt is a central signaling molecule regulating numerous cellular functions like proliferation, survival, metabolism, and motility.
  • Dysregulated Akt activity is linked to various diseases, notably cancer.
  • Recent evidence highlights the presence and activity of Akt within the cell nucleus.

Purpose of the Study:

  • To review the significant findings regarding nuclear Akt.
  • To summarize the diverse functions of Akt in the nucleus.

Main Methods:

  • Literature review of studies investigating Akt localization and function.
  • Analysis of experimental evidence demonstrating nuclear Akt activity.
  • Synthesis of data on Akt's role in nuclear processes.

Main Results:

  • Nuclear Akt actively participates in crucial signaling pathways.
  • It counteracts apoptosis by inhibiting caspase-activated deoxyribonuclease and chromatin condensation.
  • Nuclear Akt is involved in cell cycle progression, differentiation, mRNA export, DNA repair, and tumorigenesis.

Conclusions:

  • Akt is a fundamental component of nuclear signaling pathways.
  • Its nuclear functions are critical for maintaining cellular homeostasis and are implicated in disease pathogenesis.
  • Further research into nuclear Akt functions is warranted for therapeutic strategies.

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