Objective This study analyzed the role of G1 to S phase transition 1 protein(GSPT1)in promoting progression of liver cancer cells.Methods A bioinformatics database was used to analyze the expression levels of GSPT1 in...Objective This study analyzed the role of G1 to S phase transition 1 protein(GSPT1)in promoting progression of liver cancer cells.Methods A bioinformatics database was used to analyze the expression levels of GSPT1 in liver cancer tissues and the prognosis of patients.Subsequently,Western blotting and quantitative PCR were used to verify the expression levels of GSPT1 between normal hepatocytes and hepatoma cells.We used a CRISPR/Cas9 system to construct knockouts of GSPT1 in HepG2 and HCCLM9 liver cancer cells.The effect of GSPT1 on liver cancer cell migration and invasion was analyzed using flow cytometry,migration,and tumor formation assays.Results The Cancer Genome Atlas Liver Hepatocellular Carcinoma dataset indicated that GSPT1 expression was upregulated in liver cancer cell lines,and patients with liver cancer had poor prognosis.Knockout of GSPT1 in cells significantly inhibited tumor proliferation,cell migration,and growth in vivo.Conclusion In this study,we found that GSPT1 promotes the migration and invasion of liver cancer cells.展开更多
In situ TiC particles-reinforced FeCrNiCu high-entropy alloy matrix composites were prepared by vacuum induction melting method.The reaction mechanisms of the mixed powder(Ti,Cu and C)were analyzed,and the mechanical ...In situ TiC particles-reinforced FeCrNiCu high-entropy alloy matrix composites were prepared by vacuum induction melting method.The reaction mechanisms of the mixed powder(Ti,Cu and C)were analyzed,and the mechanical properties of resultant composites were determined.Cu4Tiwere formed in the reaction of Cu and Ti when the temperature rose to 1160 K.With the temperature further increased to 1182 K,newly formed Cu4Tireacted with C to give rise to TiC particles as reinforcement agents.The apparent activation energy for these two reactions was calculated to be 578.7 kJ/mol and 1443.2 kJ/mol,respectively.The hardness,tensile yield strength and ultimate tensile strength of the 15 vol%TiC/FeCrNiCu composite are 797.3 HV,605.1 MPa and 769.2 MPa,respectively,representing an increase by 126.9%,65.9%and 36.0%as compared to the FeCrNiCu high-entropy base alloy at room temperature.However,the elongation-to-failure is reduced from 21.5 to 6.1%with the formation of TiC particles.It was revealed that Orowan mechanism,dislocation strengthening and load-bearing effect are key factors responsible for a marked increase in the hardness and strength of the high-entropy alloy matrix composites.展开更多
基金supported by grants from the National Natural Science Foundation of China(No.81770283,No.82070302 and No.81902018)Clinical Medical Research Center of Peritoneal Cancer of Wuhan(No.2015060911020462)+1 种基金Natural Science Foundation of Hubei Province(No.2019CFB109)Technology and Innovation Seed Found,Zhongnan Hospital of Wuhan University(No.znpy2018004).
文摘Objective This study analyzed the role of G1 to S phase transition 1 protein(GSPT1)in promoting progression of liver cancer cells.Methods A bioinformatics database was used to analyze the expression levels of GSPT1 in liver cancer tissues and the prognosis of patients.Subsequently,Western blotting and quantitative PCR were used to verify the expression levels of GSPT1 between normal hepatocytes and hepatoma cells.We used a CRISPR/Cas9 system to construct knockouts of GSPT1 in HepG2 and HCCLM9 liver cancer cells.The effect of GSPT1 on liver cancer cell migration and invasion was analyzed using flow cytometry,migration,and tumor formation assays.Results The Cancer Genome Atlas Liver Hepatocellular Carcinoma dataset indicated that GSPT1 expression was upregulated in liver cancer cell lines,and patients with liver cancer had poor prognosis.Knockout of GSPT1 in cells significantly inhibited tumor proliferation,cell migration,and growth in vivo.Conclusion In this study,we found that GSPT1 promotes the migration and invasion of liver cancer cells.
基金financially supported by the National Natural Science Foundation of China (Nos. 51571118 and 51371098)Jiangsu Province Science and Technology Plan Project (No. BE2018753/KJ185629)。
文摘In situ TiC particles-reinforced FeCrNiCu high-entropy alloy matrix composites were prepared by vacuum induction melting method.The reaction mechanisms of the mixed powder(Ti,Cu and C)were analyzed,and the mechanical properties of resultant composites were determined.Cu4Tiwere formed in the reaction of Cu and Ti when the temperature rose to 1160 K.With the temperature further increased to 1182 K,newly formed Cu4Tireacted with C to give rise to TiC particles as reinforcement agents.The apparent activation energy for these two reactions was calculated to be 578.7 kJ/mol and 1443.2 kJ/mol,respectively.The hardness,tensile yield strength and ultimate tensile strength of the 15 vol%TiC/FeCrNiCu composite are 797.3 HV,605.1 MPa and 769.2 MPa,respectively,representing an increase by 126.9%,65.9%and 36.0%as compared to the FeCrNiCu high-entropy base alloy at room temperature.However,the elongation-to-failure is reduced from 21.5 to 6.1%with the formation of TiC particles.It was revealed that Orowan mechanism,dislocation strengthening and load-bearing effect are key factors responsible for a marked increase in the hardness and strength of the high-entropy alloy matrix composites.
