Figure 6.
Application of BDNF siRNA to cut axons has no effect on TrkB mRNA. A. Real-time PCR of retinas shows that axotomy and PBS treatment increase TrkB mRNA levels at 48 h and 1 week after axotomy. FGF-2 treatment of the cut axons doubles this increase, at 48 h only. Neither BDNF nor negative control siRNA has any significant effect upon the increases in TrkB mRNA induced by axotomy or by FGF-2. B. In situ hybridization shows TrkB mRNA in RGCs at 48 h after axotomy and FGF-2 treatment. C. SiRNA application has no effect on TrkB mRNA in RGCs. Scale bar in B: 30 μm.