Objective: To evaluate the effect of 25-hydroxyvitamin D(3) on the expression and distribution of vitamin D receptor in normal human bronchial epithelial cells.
Methods: MTT assay was used to assess the viability of human airway epithelial cell line 16HBE following a 24-h exposure to different concentrations of 25-hydroxyvitamin D(3). Real-time quantitative PCR, Western blotting, and immunofluorescence assay were used to observe the expression and distribution of vitamin D receptor in the cells following the exposure.
Results: Compared with the control cells, 16HBE cells exposed to different concentrations of 25-hydroxyvitamin D(3) exhibited no significantly increase in the expression or distribution of vitamin D receptor.
Conclusion: The influence of 25-hydroxyvitamin D(3) on bronchial epithelial cells might be independent of the expression and translocation of vitamin D receptor.