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Updated: Jun 20, 2026
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Isolation of Mesenchymal Stem Cells from Human Alveolar Periosteum and Effects of Vitamin D on Osteogenic Activity of Periosteum-derived Cells
Published on: May 4, 2018
p73 is essential for vitamin D-mediated osteoblastic differentiation
R Kommagani1, A Whitlatch, M K Leonard
1Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA.
Cell Death and Differentiation
|September 26, 2009
Summary
The study reveals that p73 is a key upstream regulator of vitamin D3 (VD3)-mediated osteoblastic differentiation in human cancer cells. Silencing p73 reduces VD3 differentiation, while DNA damage enhances it, highlighting p73
Area of Science:
- Molecular Biology
- Endocrinology
- Oncology
Background:
- Vitamin D3 (VD3) and its receptor (VDR) are crucial for bone health, keratinocyte differentiation, and possess anti-cancer properties.
- VD3 promotes osteosarcoma cell differentiation via cell cycle arrest and osteoblastic differentiation pathways.
- The upstream regulation of the VD3 signaling pathway in osteosarcoma remains incompletely understood.
Purpose of the Study:
- To investigate the upstream regulators of the VD3 signaling pathway in human osteosarcoma cell differentiation.
- To elucidate the role of p73 transcription factor in VD3-mediated osteoblastic differentiation.
Main Methods:
- Investigated the effect of p73 silencing on VD3-mediated osteoblastic differentiation.
- Examined the impact of DNA damage-induced p73 on VD3-mediated differentiation.
- Utilized human osteosarcoma cell models.
Main Results:
- p73 acts as an upstream regulator of VD3-mediated osteoblastic differentiation.
- Silencing p73 significantly reduces VD3-induced osteoblastic differentiation.
- DNA damage-induced p73 enhances VD3-mediated differentiation of osteosarcoma cells.
Conclusions:
- p73 plays a novel and significant role in vitamin D-mediated differentiation of human osteosarcoma cells.
- These findings implicate p73 as a potential therapeutic target in vitamin D-based cancer treatments.
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