As2O3 can induce apoptosis of human gastric carcinoma cells MKN45, which is the basis of its effectiveness. It shows great potential in the treatment of gastric carcinoma.

Serum E-selectin, ICAM-1 and integrin beta1 expression levels are probably related to the metastasis and relapse of gastric cancer.

The aim of the present study was to predict and identify B‑cell epitopes for mouse tumor necrosis factor‑α (mTNF‑α). DNAStar and BcePred software were used to predict B‑cell epitopes for mTNF‑α. A predicted eight‑branch multiple antigenic polypeptide (MAP) was synthesized and used to immunize BALB/c mice, combined with a promiscuous helper interleukin‑1β epitope (VQGEESNDK, amino acids 163‑171). The serum titer was measured. The specificity and avidity were determined by western blotting and indirect enzyme‑linked immunosorbent assay (ELISA). Amino acids 54‑65 (MAP1) and 78‑92 (MAP2) of mTNF‑α were predicted as most likely to be B‑cell epitopes. Dynamic monitoring of antibody concentration demonstrated that MAP1 and MAP2 may induce the production of specific antibodies with a higher antibody level for MAP2. Furthermore, MAP1 and MAP2 were confirmed to induce mTNF‑α‑specific antibodies by western blotting. Indirect ELISA was used to confirm that MAP2 had the highest affinity with commercial anti‑mTNF‑α antibody. Amino acids 54‑65 and 78‑94 of mTNF‑α are B‑cell epitopes, wherein amino acids 78‑94 have the strongest immunogenicity. The present study provides a theoretical basis for further research into the mTNF‑α polypeptide antibody and a B‑cell MAP vaccine.

Previous studies have highlighted the involvement of nuclear factor kappa B (NF‐κB) in the development of nonalcoholic fatty liver disease (NAFLD). The purpose of our investigation is to explore the interaction among NF‐κB, microRNA‐155‐5p (miR‐155‐5p), and Stanniocalcin 1 (STC1), and its effects on NAFLD by establishing a NAFLD model in Sprague Dawley rats. A highly‐expressed miR‐155‐5p and NF‐κB was revealed in the liver tissues of NAFLD rats, and a positive correlation was identified between miR‐155‐5p and NF‐κB. Next, the expression of NF‐κB and STC1 was altered in the modeled rats through lentivirus injection, followed by determination on the levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), total cholesterol, triglycerides, and low‐density lipoprotein cholesterol. Furthermore, the hepatocyte mitochondria were separated to measure the activities of adenosine triphosphate (ATP), reactive oxygen species (ROS), mitochondrial membrane potential (MMP), and mitochondrial respiratory chain complex, and to observe the number, length and ultrastructural length of mitochondrial cristae. The results demonstrated that NF‐κB overexpression induced mitochondrial dysfunction, increased ROS level, decreased ATP and MMP contents, as well as inhibited the number and length of mitochondrial cristae in the hepatocyte mitochondria of NAFLD rats. Besides, miR‐155‐5p was found to negatively regulate STC1 expression based on dual luciferase reporter gene assay, which exert inhibition on mitochondrial activity of hepatocytes in NAFLD rats. These results uncover the possible involvement of NF‐κB/miR‐155‐5p/STC1 axis in NAFLD progression, that NF‐κB could increase miR‐155‐5p expression to inhibit STC1 expression, thus inducing hepatic mitochondrial dysfunction and promoting the occurrence and development of NAFLD.