FIGURE 9.
A model of a novel mechanism for controlling osteoclast differentiation and function by miRNA-223 in osteoclast precursors. PU.1 induced by M-CSF activates the transcription of miRNA-223, which causes a negative control on M-CSFR expression levels. Also, induced PU.1 stimulates RANK expression, and consequently osteoclast differentiation and function are induced by M-CSF and RANKL stimulation.