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. 2005 May 23;169(4):591–601. doi: 10.1083/jcb.200412139

Figure 4.

Figure 4.

FIAT transgenic mice. (A) Schematic representation of the Col 1-FIAT transgene. Poly A, SV40 polyadenylation signal. (B) RT-PCR assay of transgene expression. Top panel shows specific FIAT transgene expression using primers from the FIAT sequence and the SV40 polyadenylation sequence. Bottom panel shows GAPDH expression. He, heart; Ki, kidney; Te, tendons; Br, brain; Mu, skeletal muscle; Sk, skin, Li, liver; Bo, bone. (C) Endogenous FIAT and transgene expression in osteoblasts and bone. RT-PCR with primers for endogenous FIAT (lanes 1 and 2) or primers specific for the transgene (lane 3). RNA was from osteoblast primary cultures (lane 1) or calvaria. Wt, wild type; Tg, transgenic. (D) Reduced bone mass in FIAT transgenic mice. Goldner (left) and von Kossa (right) stains of tibial sections from FIAT transgenic mice (bottom) and wild-type littermates (top) at 3 mo old. Note the smaller trabeculae and reduced secondary center of ossification in transgenic animals. Bar, 500 μM.