Many works have been done on the interaction between neurons and osteoblasts. However, the cells used in our previous study were derived from mouse and rat, and it is impossible to exclude the possibility of cross-reactivity of the mouse and rat probes Osteoblasts cell line labeled with red fluorescent protein and sympathetic neuronal cell line labeled with green fluorescent protein were generated. A DNA microarray analysis was conducted by using these cell line in co-culture system. It was filtered for genes with a ratio more than 2.0-fold in the biological process category by the search term “axon” and cellular component by the search term “membrane”. Eight genes, i.e., neuropilin 1, growth associated protein 43, dopamine receptor D2, plexin A2, disabled 1, ephrin receptor A7, ephrin B2, and fibronectin leucine rich transmembrane protein 3 were found. The molecules expressed on the plasma membrane of osteoblasts were upregulated in contact co-culture with sympathetic neuronal cells. It was filtered for genes with a ratio more than 2.0-fold in the biological process category by the search term “osteoblast” and cellular component by the search term “membrane”. Four genes, i.e., gap junction protein, alpha 1, collagen, type VI, alpha 1 and bone morphogenetic protein 4 were found. The molecules expressed on the plasma membrane of neurons were upregulated in co-culture with osteoblasts. These molecules may be candidates for factors that promote osteoblast differentiation and neural differentiation.