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Pituitary adenomas, stem cells, and cancer stem cells: what's new?
M Caffarini1, M Orciani1, L Trementino2
1Department of Clinical and Molecular Sciences-Histology, Università Politecnica delle Marche, via Tronto 10/A, 60126, Ancona, Italy.
Purpose:
To clarify the existence of pituitary stem cells (SCs) both in the embryonic and the postnatal gland and the role for SCs in pituitary adenomas.
Methods:
This work, which does not address the pathogenesis of pituitary adenomas, reviews the latest research findings and discoveries on SCs in pituitary and cancer SCs (CSCs) in pituitary adenomas and discusses the involvement of the EMT.
Results:
Several groups using different approaches and techniques have demonstrated the existence of SCs and CSCs and as they are major players in pituitary adenoma onset.
Conclusions:
As in other benign and malignant tumors, the hypothesis that CSCs play a pivotal role in pituitary adenoma onset has been confirmed as well as the existence of a link between the epithelial-to-mesenchymal transition (EMT) process and CSC formation in epithelial tumors.
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