RESUMO
Objective To observe the effects of amarogentinon liver cancer stem cells (LCSCs) after insufficient thermal ablation and its mechanism. Methods A insufficient thermal ablation model of HepG2 cells was established by water bath method.The percentage of CD133-positive LCSCs and the mRNA and protein levels of CD133 were detected by flow cytometry, qRT-PCR and Western blot.The insufficient thermal ablation model of HepG2 cells was treated with variable doses of amarogentin for 24 h; the percentage of CD133-positive LCSCs, the proliferation and apoptosis of liver cancer cells, and the mRNA and protein levels of CD133, TBC1D15, and p53were detected by flow cytometry, qRT-PCR and Western blot. Results The percentage of CD133-positive HepG2 cells and the mRNA and protein levels of CD133 and TBC1D15in the insufficient thermal ablation model were significantly higher than those in the normal HepG2 cells.Amarogentin then markedly decreased the percentage of CD133-positive LCSCs, the proliferation rate of HepG2 cells, and the mRNA and protein levels of CD133 and TBC1D15 in the insufficient thermal ablationresidual model (all P < 0.05);inversely, the apoptosis rate of HepG2 cells and the phosphorylated levels of p53 in the insufficient thermal ablation model were significantly increased (all P < 0.05). Conclusion Amarogentin could reduce the proportion of LCSCs after insufficient thermal ablation, inhibit the proliferation, and promote the apoptosis of LCSCs, which maybe associated with increasing the phosphorylation of p53 and inhibiting the expression of TBC1D15.
RESUMO
Decompensated liver cirrhosis has various life-threatening complications such as spontaneous bacterial peritonitis, hepatic encephalopathy, and sepsis, and the development of such complications is closely associated with bacterial translocation. Pathological bacterial translocation in patients with liver cirrhosis is caused by the impairment of intestinal barrier function, and thus bacteria can cross the intestinal barrier and enter the mesenteric lymph nodes or other sites. Therefore, a better understanding of the association between intestinal barrier and bacterial translocation in liver cirrhosis can provide new theoretical support for the treatment of liver cirrhosis. This article discusses the four major components of the intestinal barrier, namely the mechanical barrier, the immune barrier, the chemical barrier, and the biological barrier, as well as their changes during bacterial translocation.
RESUMO
Sepsis is a disease with a high mortality rate worldwide,which seriously threatens human life and health.Due to the complexity of its pathogenesis,diagnosis and treatment are often very difficult.Pyroptosis is a newly discovered pro-inflammatory form of programmed cell death,which occurs predominantly in professional phagocytes.During sepsis,appropriate pyroptosis is required for defense against bacterial infection,however,excessive pyroptosis will also aggravate the inflammatory reaction of sepsis.Therefore,the study of the signaling pathways and regulatory mechanisms of pyroptosis in sepsis may contribute to identify potential therapeutic targets.Hence,the study provide an overview of the recent advances which focus on the two signaling pathway of pyroptosis,some caspases which have found new effects,GSDM family and the crosstalk between different form of cell death.
