| abstract |
Vectors, such as retroviral vectors and transposon-based nonviral vectors, are disclosed herein that can be used to target transgene expression to the proliferating periosteal cells and cells in the marrow space after bone fracture. In one embodiment, these vectors include a human Cox-2 gene that is modified to improve mRNA stability and protein translation by truncating the 3′ untranslated region (UTR). In addition, in some embodiments, the native translation signal is replaced with an optimized Kozak sequence. These vectors can be used alone or with vectors expressing BMP2/4, FGF-2, or LMP-1 gene to repair bone fractures and increase prostaglandin secretion. Methods for identifying agents that accelerate bone repair are also disclosed. |