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Molecular And Functional Interaction Of Runx2 And Sp7 For Development Of The Osteoblast Phenotype, Harunur Rashid
Molecular And Functional Interaction Of Runx2 And Sp7 For Development Of The Osteoblast Phenotype, Harunur Rashid
All ETDs from UAB
Runx2 and Sp7 transcription factors are essential for skeletogenesis. Deletion of either gene in mice results in failure of bone tissue development. However, underlying mechanisms responsible for a surprisingly similar phenotype by two distinctly unrelated proteins remain unknown. Sp7 is a Runx2 downstream target gene and is not expressed in Runx2 null mice. Thus, the Runx2 null model represents a compound phenotype of loss of both proteins. In contrast, normal levels of Runx2 mRNA are noted in Sp7 null mice. The failure of Runx2 to promote bone formation in Sp7 null mice suggests that Sp7 is required for Runx2 function …
Osteoblast And Odontoblast Specific Regulatory Actions Of Runx2 For The Development Of Mineralized Tissues, Mitra Darice Adhami
Osteoblast And Odontoblast Specific Regulatory Actions Of Runx2 For The Development Of Mineralized Tissues, Mitra Darice Adhami
All ETDs from UAB
The Runx2 transcription factor is necessary for commitment and differentiation of mesenchymal cells into the chondroblasts, osteoblasts and odontoblasts. Runx2 induces the expression of several key genes involved in mineralization of both the bone and dentin matrices. Global Runx2-null mice are completely void of mineralized tissue and do not express osteoblast markers, indicating that Runx2 is required for commitment to the osteoblast lineage. Tooth development in Runx2-null mice is arrested in the bell stage, prior to the differentiation of odontoblasts. Thus, Runx2 is essential for development of osteoblast and odontoblast lineages. However, the functional requirements of Runx2 after commitment to …