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Skeletal hormones and the C/EBP and Runx transcription factors: interactions that integrate and redefine gene
Michael Centrella1, Sylvia Christakos, Thomas L McCarthy
1Department of Surgery, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06520-8041, USA. michael.centrella@yale.edu
Abstract:
Systemic hormones and local growth factors have significant and often complex roles in normal tissue development, growth, remodeling, and repair. Early efforts in skeletal tissue attempted to define active panels of these agents and their direct effects on cell proliferation, matrix production, and secretion of other soluble mediators of differentiated cell function. Initial results resolved many of these questions and began to unveil functional interactions between specific hormones and growth factors. More recent evidence suggests that interactions between individual hormone systems also occur in less anticipated but probably not less meaningful ways. In some cases, these interactions may help to define a spectrum of effects on gene expression by focusing, refocusing, or integrating the activity of previously recognized transcription regulators. Other studies in isolated osteoblasts predict that certain steroid hormones have distinctive effects on specific transcription factors with important roles in bone growth and repair. In this review, we focus on studies that define functional and physical interactions between molecular mediators of hormone activity that could directly effect skeletal growth factor biology.
Insights
Hormones and growth factors influence skeletal development and repair. This review explores their complex interactions, focusing on how these molecular mediators affect bone growth factor biology.
Area of Science:
- Endocrinology and Molecular Biology
- Skeletal Biology and Tissue Engineering
Background:
- Systemic hormones and local growth factors are crucial for skeletal tissue development, remodeling, and repair.
- Early research identified key agents and their direct effects on osteoblast function.
- Recent findings highlight complex, often unanticipated interactions between hormone systems.
Purpose of the Study:
- To review studies defining functional and physical interactions between molecular mediators of hormone activity.
- To elucidate how these interactions directly impact skeletal growth factor biology.
- To explore the role of hormone system interactions in gene expression and transcription regulation.
Main Methods:
- Literature review of studies on hormonal and growth factor interactions in skeletal biology.
- Analysis of research on osteoblast function and gene expression.
- Focus on molecular mechanisms underlying hormone-growth factor interplay.
Main Results:
- Hormone and growth factor interactions are complex and influence skeletal development.
- Interactions can modulate gene expression by affecting transcription regulators.
- Steroid hormones show specific effects on transcription factors vital for bone growth and repair.
Conclusions:
- Understanding molecular interactions between hormones and growth factors is key to skeletal biology.
- These interactions offer new insights into regulating bone growth and repair mechanisms.
- Further research into these complex molecular dialogues is warranted for therapeutic applications.
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