Fig. 8: Schematic drawing of miR-29a signaling in osteoblasts repressed osteoclastic activity and osteoporosis.

miR-29a targets RANKL expression and downregulates PCAF signaling-mediated CXCL12 expression to reduced osteoclastic activity, sustaining bone mass (a). Estrogen loss decreases miR-29a loss, which augments RANKL and CXCL12 expression in osteogenic cells, accelerating osteoclast formation and osteoporosis development (b)