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. 2011 Apr 18;4(4):548–555. doi: 10.1242/dmm.006874

Fig. 3.

Fig. 3.

Elevation of ERK downstream signaling is associated with tumor formation in the bladder and in papilloma formation. Activation of overall ERK-MAPK signaling was examined in the bladders of wild-type (A,B) and UroIICre+Fgfr3+/K644E (C,D) mice, in papilloma of UroIICre+Fgfr3+/K644EK-RasG12D/+ mice (E,F), and in bladder tumors of UroIICre+H-RasQ61L (G,H) and UroIICre+β-cateninexon3/exon3H-RasQ61L (I,J) mice by assessing expression of Pea3 (A,C,E,G,I) and pElk1 (B,D,F,H,J). Upregulation of both Pea3 and pElk1 was observed in the bladder of UroIICre+Fgfr3+/K644E mice compared with that of wild-type, and further upregulation was observed in papilloma of UroIICre+Fgfr3+/K644EK-RasG12D/+ mice, as well as in bladder tumor models with H-RasQ61L mutation. Scale bar: 200 μm.