K7M2 mouse osteosarcoma cells form lytic tumors and are deficient in osterix (Osx), a zinc finger–containing transcription factor required for osteoblast differentiation and bone formation. Our previous studies showed that replacement of Osx suppresses lytic bone destruction. Cytokines, including interleukin (IL)-1A, IL-6, IL-11, and prostaglandin E2, have been shown to stimulate osteoclast act...

Osterix (Osx or Sp7) is a zinc-finger-family transcriptional factor essential for osteoblast differentiation in mammals. The Osx-Cre mouse line (also known as Osx1-GFP::Cre) expresses GFP::Cre fusion protein from a BAC transgene containing the Osx regulatory sequence. The mouse strain was initially characterized during embryogenesis, and found to target mainly osteoblast-lineage cells. Because ...

Non-viral based gene therapies represent one possible tissue engineering-based approach to improve bone regeneration. Unique target proteins for gene therapy are transcription factors. These are nuclear based proteins that can not feasibly be applied as mature proteins. Therefore, protein based therapies can not be utilized. Gene therapy is the only option. However, it remains unclear which tra...

OBJECTIVE Mechanism of zoledronic acid on osteoblastic differentiation of mesenchymal stem cells (MSCs) has not fully understood. With the knowledge of some drugs mechanism that alter methylation pattern of some genes, the present research sets out to evaluate osterix (OSX) promoter methylation pattern during zoledronic acid-induced osteoblastic differentiation of MSCs. MATERIALS AND METHODS ...

objective: mechanism of zoledronic acid on osteoblastic differentiation of mesenchymal stem cells (mscs) has not fully understood. with the knowledge of some drugs mechanism that alter methylation pattern of some genes, the present research sets out to evaluate osterix (osx) promoter methylation pattern during zoledronic acid-induced osteoblastic differentiation of mscs. materials and methods: ...

In patients with inflammatory arthritis, tumour necrosis factor (TNF)-α are overproduced in inflamed joints. This leads to local erosion of cartilage and bone, periarticular osteopenia, as well as osteoporosis. But less is known regarding the molecular mechanisms that mediate the effect of TNF-α on osteoblast function. The purpose of this study was to test that C terminus of Hsc70-interacting p...

Osterix (Osx) is an osteoblast-specific transcription factor that is essential for bone formation. MicroRNAs (miRNAs) are ~22-nucleotide-long noncoding RNAs that play important regulatory roles in animals and plants by targeting mRNAs for cleavage or translational repression. They can also control osteoblast-mediated bone formation and osteoclast-related bone remodeling. The vital roles of Osx ...

osterix (osx; sp7) encodes a zinc-finger transcription factor that controls osteoblast differentiation in mammals. Although identified in all vertebrate lineages, its role in non-mammalian bone formation remains elusive. Here, we show that an osx mutation in medaka results in severe bone defects and larval lethality. Pre-osteoblasts fail to differentiate leading to severe intramembranous and pe...