Figure 2From: Hedgehog overexpression leads to the formation of prostate cancer stem cells with metastatic property irrespective of androgen receptor expression in the mouse modelOverexpression of Hedgehog signaling members, including Patch1, Smo, Gli1, Gli2, and Gli3, in pCX-shh-IG-injected prostates at day 90 after injection. The lower pictures are magnifications of the boxed areas shown in the upper pictures. Hedgehog signalling members were expressed in the PIN (F-J) and CaP (K-O) of the pCX-shh-IG-injected prostates, in contrast to the absence of evident signal in the pCX-IG-injected vehicle controls (A-E; basal/stem cells indicated by arrows). Note that some cells positive for Hedgehog signalling (indicated by arrowheads in F-J) appeared to be basal/stem cells in morphology. Western blot analysis (P) confirmed that Hedgehog signalling members were highly expressed in the pCX-shh-IG- injected prostates, as compared to those sham injections with 0.9% saline or vehicle controls with pCX-IG vector. Tubulin detections served as loading controls. Scale bars: 10 μm in lower E, lower J and lower O. CaP: prostate cancer; PIN: prostatic intraepithelial neoplasia; Gli2-act: active form of Gli2; Gli2-rep: repressed form of Gli2; Gli3-act: active form of Gli3.Back to article page