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Updated: Apr 5, 2026

Assessing Cellular Target Engagement by SHP2 PTPN11 Phosphatase Inhibitors
Published on: July 17, 2020
Focus on PTEN Regulation
Miriam Bermúdez Brito1, Evangelia Goulielmaki1, Evangelia A Papakonstanti1
1Department of Biochemistry, School of Medicine, University of Crete , Heraklion , Greece.
Phosphatase and tensin homolog (PTEN) is a tumor suppressor. Its functions extend beyond lipid phosphatase activity, involving diverse cellular locations and complex regulatory mechanisms impacting human diseases.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- The tumor suppressor PTEN's role was traditionally linked to its lipid phosphatase activity against PI(3,4,5)P3.
- Emerging evidence reveals PTEN's functions independent of its enzymatic activity, with roles in the nucleus, organelles, and extracellularly.
Purpose of the Study:
- To summarize current knowledge on PTEN regulation and its involvement in human diseases.
- To highlight the multifaceted roles of PTEN beyond its canonical lipid phosphatase function.
Main Methods:
- Review of existing literature on PTEN.
- Analysis of regulatory mechanisms including transcriptional, post-transcriptional, and post-translational modifications.
- Examination of PTEN's interactions and localization.
Main Results:
- PTEN exhibits diverse physiological functions mediated by both its enzymatic and non-enzymatic activities.
- PTEN's expression and activity are tightly regulated through multiple pathways.
- PTEN localization within the cell and its protein interactions significantly influence its function.
Conclusions:
- PTEN is a critical regulator with complex control mechanisms.
- Understanding PTEN's diverse roles and regulation is crucial for comprehending its involvement in human diseases.
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