Hepatocellular carcinoma(HCC) is one of the most common causes of cancer-related death worldwide. Liver cancer is generally related to hepatitis B or Cinfection and cirrhosis. Usually, patients with HCC are asymptomat...Hepatocellular carcinoma(HCC) is one of the most common causes of cancer-related death worldwide. Liver cancer is generally related to hepatitis B or Cinfection and cirrhosis. Usually, patients with HCC are asymptomatic and are diagnosed at late stages when surgical treatment is no longer suitable. Limited treatment options for patients with advanced HCC are a major concern. Therefore, there is an urge for finding novel therapies to treat HCC. Liver cancer is highly heterogeneous and involved deregulation of several signaling pathways. Wnt/β-catenin pathway is frequently upregulated in HCC and it is implicated in maintenance of tumor initiating cells, drug resistance, tumor progression, and metastasis. A great effort in developing selective drugs to target components of the β-catenin pathway with anticancer activity is underway but only a few of them have reached phase Ⅰ clinical trials. We aim to review the role of β-catenin pathway on hepatocarcinogenesis and liver cancer stem cell maintenance. We also evaluated the use of small molecules targeting the Wnt/β-catenin pathway with potential application for treatment of HCC.展开更多
目的探讨Wnt/β-catenin通路在糖尿病肾病(DN)大鼠肾脏的表达及化瘀通络中药对其的干预作用。方法 60只大鼠中选取10只为对照组,其余大鼠给予高糖高脂饲料喂养联合ip小剂量链脲佐菌素(STZ)制备DN模型。成模大鼠随机分为模型组、厄贝沙...目的探讨Wnt/β-catenin通路在糖尿病肾病(DN)大鼠肾脏的表达及化瘀通络中药对其的干预作用。方法 60只大鼠中选取10只为对照组,其余大鼠给予高糖高脂饲料喂养联合ip小剂量链脲佐菌素(STZ)制备DN模型。成模大鼠随机分为模型组、厄贝沙坦组、化瘀通络中药组,各组ig给药,20周末检测24 h尿蛋白定量,RT-PCR法检测Wnt4、β-catenin m RNA表达,免疫组化及Western blotting法检测Wnt4、β-catenin蛋白的表达。结果与对照组比较,模型组大鼠24 h尿蛋白定量及Wnt4、β-catenin m RNA和蛋白的表达量明显升高(P<0.01)。与模型组比较,中药组及厄贝沙坦组24 h尿蛋白定量及Wnt4、β-catenin m RNA和蛋白的表达量明显降低(P<0.05、0.01)。结论化瘀通络中药可减少DN大鼠尿蛋白,且能够抑制大鼠肾脏存在的Wnt/β-catenin通路高表达,该作用可能是其减少蛋白尿排泄的主要途径之一。展开更多
The iso fl avone calycosin-7-O-β-D-glucopyranoside(CG) is a principal constituent of Astragalus membranaceus(AR) and has been reported to inhibit osteoclast development in vitro and bone loss in vivo. The aim of this...The iso fl avone calycosin-7-O-β-D-glucopyranoside(CG) is a principal constituent of Astragalus membranaceus(AR) and has been reported to inhibit osteoclast development in vitro and bone loss in vivo. The aim of this study was to investigate the osteogenic effects of CG and its underlying mechanism in ST2 cells. The results show that exposure of cells to CG in osteogenic differentiation medium increases ALP activity, osteocalcin(Ocal) m RNA expression and the osteoblastic mineralization process. Mechanistically, CG treatment increased the expression of bone morphogenetic protein 2(BMP-2), p-Smad 1/5/8, β-catenin and Runx2, all of which are regulators of the BMP- or wingless-type MMTV integration site family(WNT)/β-catenin-signaling pathways. Moreover, the osteogenic effects of CG were inhibited by Noggin and DKK-1 which are classical inhibitors of the BMP and WNT/β-catenin-signaling pathways, respectively. Taken together, the results indicate that CG promotes the osteoblastic differentiation of ST2 cells through regulating the BMP/WNT signaling pathways. On this basis, CG may be a useful lead compound for improving the treatment of bone-decreasing diseases and enhancing bone regeneration.展开更多
文摘Hepatocellular carcinoma(HCC) is one of the most common causes of cancer-related death worldwide. Liver cancer is generally related to hepatitis B or Cinfection and cirrhosis. Usually, patients with HCC are asymptomatic and are diagnosed at late stages when surgical treatment is no longer suitable. Limited treatment options for patients with advanced HCC are a major concern. Therefore, there is an urge for finding novel therapies to treat HCC. Liver cancer is highly heterogeneous and involved deregulation of several signaling pathways. Wnt/β-catenin pathway is frequently upregulated in HCC and it is implicated in maintenance of tumor initiating cells, drug resistance, tumor progression, and metastasis. A great effort in developing selective drugs to target components of the β-catenin pathway with anticancer activity is underway but only a few of them have reached phase Ⅰ clinical trials. We aim to review the role of β-catenin pathway on hepatocarcinogenesis and liver cancer stem cell maintenance. We also evaluated the use of small molecules targeting the Wnt/β-catenin pathway with potential application for treatment of HCC.
文摘目的探讨Wnt/β-catenin通路在糖尿病肾病(DN)大鼠肾脏的表达及化瘀通络中药对其的干预作用。方法 60只大鼠中选取10只为对照组,其余大鼠给予高糖高脂饲料喂养联合ip小剂量链脲佐菌素(STZ)制备DN模型。成模大鼠随机分为模型组、厄贝沙坦组、化瘀通络中药组,各组ig给药,20周末检测24 h尿蛋白定量,RT-PCR法检测Wnt4、β-catenin m RNA表达,免疫组化及Western blotting法检测Wnt4、β-catenin蛋白的表达。结果与对照组比较,模型组大鼠24 h尿蛋白定量及Wnt4、β-catenin m RNA和蛋白的表达量明显升高(P<0.01)。与模型组比较,中药组及厄贝沙坦组24 h尿蛋白定量及Wnt4、β-catenin m RNA和蛋白的表达量明显降低(P<0.05、0.01)。结论化瘀通络中药可减少DN大鼠尿蛋白,且能够抑制大鼠肾脏存在的Wnt/β-catenin通路高表达,该作用可能是其减少蛋白尿排泄的主要途径之一。
基金supported by the National Natural Science Foundation of China, China (No. 31400304)the Natural Science Foundation of Hubei Province, China (No. 2012FFB00303)+1 种基金the Youth & Middle-aged Talent Project of Hubei Province (No. Q20111005)the Science and Technology Program of Shandong Province (No. J12LL07)
文摘The iso fl avone calycosin-7-O-β-D-glucopyranoside(CG) is a principal constituent of Astragalus membranaceus(AR) and has been reported to inhibit osteoclast development in vitro and bone loss in vivo. The aim of this study was to investigate the osteogenic effects of CG and its underlying mechanism in ST2 cells. The results show that exposure of cells to CG in osteogenic differentiation medium increases ALP activity, osteocalcin(Ocal) m RNA expression and the osteoblastic mineralization process. Mechanistically, CG treatment increased the expression of bone morphogenetic protein 2(BMP-2), p-Smad 1/5/8, β-catenin and Runx2, all of which are regulators of the BMP- or wingless-type MMTV integration site family(WNT)/β-catenin-signaling pathways. Moreover, the osteogenic effects of CG were inhibited by Noggin and DKK-1 which are classical inhibitors of the BMP and WNT/β-catenin-signaling pathways, respectively. Taken together, the results indicate that CG promotes the osteoblastic differentiation of ST2 cells through regulating the BMP/WNT signaling pathways. On this basis, CG may be a useful lead compound for improving the treatment of bone-decreasing diseases and enhancing bone regeneration.
