Zhong Chuan Wang1, Jun Gao, Shu Ming Zi, Ming Yang, Peng Du, Long Cui. 1. Department of Anorectal Surgery and Colorectal Cancer Center, Xin Hua Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Abstract
OBJECTIVE: To determine the hedgehog (Hh) signaling pathway correlated with the development of colon cancer and melanosis coli. METHODS: Protein and mRNA levels of Hh signaling pathway components (sonic hedgehog [Shh], protein patched homolog 1 [Ptch 1], GLI family zinc finger 1 [Gli 1] and suppressor of fused homolog [Drosophila] [Sufu]) in 127 patients with colon cancer, 36 with melanosis coli and 20 adjacent normal mucosal tissues taken from surgical specimens were evaluated using antibody staining and quantitative real-time polymerase chain reaction. RESULTS: In adjacent normal tissue Shh and Ptch1, but not Gli1 or Sufu, were weakly expressed and mainly in the lining epithelium of the colonic mucosa. In cancerous tissues Shh and Gli1 were uniformly strong while Ptch1 was patchy and weak, and Sufu uniformly weak, which paralleled their levels of corresponding mRNA. Elevated protein levels of Shh and Ptch were significantly associated with mucinous colonic tissues. Elevated Sufu protein levels were positively correlated with the diameter and invasion of the tumor. In patients with melanosis coli, mRNA levels of Shh, Ptch1, Gli1 and Sufu were very low, which was similar to those of adjacent normal tissues; but protein levels of Shh, Ptch1 and Gli1, but not Sufu, were high, which was similar to those of cancerous tissues. CONCLUSIONS: The mRNA and protein levels of Hh pathway components are aberrantly elevated in colon cancer, which may be the potential molecular classification markers. Further studies are required to determine the role of melanosis coli in the colon tumorigenesis.
OBJECTIVE: To determine the hedgehog (Hh) signaling pathway correlated with the development of colon cancer and melanosis coli. METHODS: Protein and mRNA levels of Hh signaling pathway components (sonic hedgehog [Shh], protein patched homolog 1 [Ptch 1], GLI family zinc finger 1 [Gli 1] and suppressor of fused homolog [Drosophila] [Sufu]) in 127 patients with colon cancer, 36 with melanosis coli and 20 adjacent normal mucosal tissues taken from surgical specimens were evaluated using antibody staining and quantitative real-time polymerase chain reaction. RESULTS: In adjacent normal tissue Shh and Ptch1, but not Gli1 or Sufu, were weakly expressed and mainly in the lining epithelium of the colonic mucosa. In cancerous tissues Shh and Gli1 were uniformly strong while Ptch1 was patchy and weak, and Sufu uniformly weak, which paralleled their levels of corresponding mRNA. Elevated protein levels of Shh and Ptch were significantly associated with mucinous colonic tissues. Elevated Sufu protein levels were positively correlated with the diameter and invasion of the tumor. In patients with melanosis coli, mRNA levels of Shh, Ptch1, Gli1 and Sufu were very low, which was similar to those of adjacent normal tissues; but protein levels of Shh, Ptch1 and Gli1, but not Sufu, were high, which was similar to those of cancerous tissues. CONCLUSIONS: The mRNA and protein levels of Hh pathway components are aberrantly elevated in colon cancer, which may be the potential molecular classification markers. Further studies are required to determine the role of melanosis coli in the colon tumorigenesis.
Authors: Zhong Hui Liu; Dominic Chi Chung Foo; Wai Lun Law; Fion Siu Yin Chan; Joe King Man Fan; Jun Sheng Peng Journal: PLoS One Date: 2017-10-31 Impact factor: 3.240
Authors: Shiyong Huang; XiaoMing Zhong; Jun Gao; Rongfeng Song; Hongyu Wu; Shuming Zi; Shijie Yang; Peng Du; Long Cui; Chun Yang; Zikang Li Journal: Biomed Res Int Date: 2014-05-14 Impact factor: 3.411