Expression and Role of Hedgehog Signaling Pathway in Renal Clear Cell Carcinoma / 天津医药

ABSTRACT

Objective To investigate the expression of Shh, Ptch, Smo and Gli1 proteins who belongs to components of Hedgehog signaling pathway, and to explore the relationship between the abnormal activated of Hedgehog signaling path?way with renal clear cell carcinoma (RCCC). Methods Protein expressions were examined by immunohistochemistry in 76 cases of human RCCC and 12 pericarcinomatous tissues. And 10 fresh specimens from cancer tissues and pericarcinoma?tous tissues were used to examine expressions of Shh, Ptch, Smo and Gli1 by Western blotting. Results The expressions of examined proteins were higher in RCCC than that in pericarcinomatous tissue. Shh (52.6%vs 8.3%), Ptch (63.2%vs 16.7%), Smo (44.7%vs 8.3%) and Gli1 (60.5%vs 25.0%). The increased proteins levels were disassociated with age, gender, and tu?morous size in RCCC. But it was significantly correlated with TNM stage of RCCC. The expressions were gradually increased with higher TNM stage of RCCC or more invasive malignancy. Conclusion Hedgehog signaling pathway is highly activated in RCCC. It might be involved in initiation, progression of RCCC, and it might be used as the target for RCCC treatment.