Growth retardation of Gpr48 mutant mice and expression of Gpr48
in embryonic skeletal and bone cells. (A-C) Decrease in embryonic
(A) and postnatal (B) body weight and long-bone length (C) in
Gpr48-/- (HO) mice. (D-J) Whole-mount lacZ
staining of E12.5 (D,E) and E16.5 (F,G) wild-type (WT) (D,F) and
Gpr48+/- (E,G) mouse embryos. Tissue sections of femurs
from E16.5 wild-type (H) and Gpr48+/- (I,J) mice. The
wild-type bone does not show any lacZ staining (D,F,H). (K)
RT-PCR analysis of Gpr48 expression in osteoblast and chondrocyte
cells, showing bone marrow stromal cell (BMSC), calvarial osteoblast (CO),
osteoblast cell line MC3T3-E1, primary cultured chondrocyte (CC) and
chondrocyte cell line ATDC5 with Gpr48-/- calvarial
osteoblast (CO) and chondrocyte (CC) as negative controls.