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Pituitary Tumorigenesis-Implications for Management.

Rodanthi Vamvoukaki1, Maria Chrysoulaki1, Grigoria Betsi1

  • 1Endocrinology and Diabetes Clinic, University Hospital of Heraklion, School of Medicine, University of Crete, 71500 Crete, Greece.

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Pituitary neuroendocrine tumors (PitNETs) involve complex signaling pathways and gene mutations. Understanding these molecular mechanisms is crucial for improved diagnosis and targeted treatments for pituitary tumors.

Keywords:
genetic alterationsmolecular pathwayspituitary adenomapituitary neuroendocrine tumors (PitNETs)pituitary pathogenesispituitary tumorigenesis

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Area of Science:

  • Endocrinology
  • Neuro-oncology
  • Molecular Biology

Background:

  • Pituitary neuroendocrine tumors (PitNETs) are common intracranial tumors, mostly benign but sometimes aggressive.
  • Advances in molecular biology reveal key mechanisms in pituitary tumorigenesis.

Purpose of the Study:

  • To review cell signaling pathways and genes implicated in pituitary tumorigenesis.
  • To clarify the diagnostic and management implications of these molecular findings.

Main Methods:

  • Literature review of molecular biology advances in pituitary tumorigenesis.
  • Analysis of signaling pathways (Gsa/cAMP, MAPK/ERK, PI3K/Akt, Wnt, HIPPO) and tumor suppressor genes (menin, CDKN1B, SDHx).

Main Results:

  • Mutations in Gsa/cAMP pathway proteins cause many PitNETs and syndromes (McCune-Albright, Carney complex, FIPA, XLAG).
  • Other pathways (MAPK/ERK, PI3K/Akt, Wnt, HIPPO) and genes (menin, CDKN1B, SDHx) are also involved.
  • Pituitary stem cells and miRNAs play a role in tumorigenesis.

Conclusions:

  • Understanding these molecular pathways and genes is vital for diagnosing and managing PitNETs.
  • Pituitary stem cells and miRNAs offer potential new targets for diagnosis and therapy.