R-spondin 2 promoted osteogenesis through activating the Wnt/β-catenin signaling pathway.
LGR4 acted as a pivotal receptor for R-spondin 2 to promote osteogenesis.
Rspo2 inhibited osteoclastogenesis and this effect of Rspo2 was dependent on osteoblasts.
Exogenous recombinant R-spondin 2 could rescue the bone loss in OVX mice.