Lysine Methyltransferase 5A Promotes the Progression of Growth Hormone Pituitary Neuroendocrine Tumors through the Wnt/β-Catenin Signaling Pathway
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View abstract on PubMed
Summary
This summary is machine-generated.High expression of Lysine methyltransferase 5A (KMT5A) promotes growth hormone (GH) pituitary tumors (PitNETs). Inhibiting KMT5A reduces tumor progression and increases apoptosis, suggesting KMT5A as a therapeutic target.
Area Of Science
- Endocrinology
- Oncology
- Molecular Biology
Background
- Growth hormone (GH) secreting pituitary adenomas are aggressive Pituitary Neuroendocrine Tumors (PitNETs).
- Previous studies linked high Lysine methyltransferase 5A (KMT5A) expression to PitNET proliferation.
Purpose Of The Study
- To investigate the role of KMT5A in GH PitNET progression.
- To elucidate the molecular mechanisms underlying KMT5A's function in GH PitNETs.
Main Methods
- Assessed KMT5A expression in human and rat pituitary tissues and cells using immunohistochemistry, qRT-PCR, and Western blot.
- Utilized RNA interference and a KMT5A inhibitor to reduce KMT5A levels in GH3 cells.
- Evaluated proliferation and apoptosis in vitro (CCK-8, EdU, FCM, clone formation) and tumor growth in vivo (xenograft model).
Main Results
- KMT5A was significantly overexpressed in GH PitNETs and GH3 cells.
- Reduced KMT5A expression inhibited tumor growth and induced apoptosis in vitro.
- The Wnt/β-catenin signaling pathway was identified as a key mechanism regulated by KMT5A.
Conclusions
- KMT5A promotes GH PitNET progression, likely through the Wnt/β-catenin pathway.
- KMT5A represents a potential therapeutic target and biomarker for GH PitNETs.
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