Fig. 5
The Jak1/Stat3 pathway is activated during the early stages of hair cell regeneration. (A) In situ hybridization shows that stat3 is increased at 1 and 3 h after neomycin treatment. (B) bmp5 is up-regulated at 1 h after neomycin treatment in situ. (C) Table depicting the status of signaling pathways at different time points after hair cell death. All comparisons (no change, inhibition, or activation) were evaluated relative to untreated control samples. The Wnt, Notch, and Fgf pathways are inhibited immediately after neomycin treatment, whereas the cell cycle and Jak1/Stat3 pathways are activated during the early stages of regeneration. The Wnt and Notch pathways are reactivated at 12 h and 5 h after neomycin treatment, respectively.