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Using network pharmacology and molecular docking, we predicted the potential mechanisms of Lonicerae japonicae flos (LJF) therapy for COVID-19. A total of 493 component-related targets and 6,233 COVID-19-related genes were identified, and 267 core genes with overlapping of the two types of genes were identified. The target AKT1, CASP3, IL1B, IL6, PTGS2, TNF and JUN were the hub genes in PPI network according to MCODE score. Component-Target analysis showed the close relationship between targets and components. The results of functional enrichment analyses revealed that LJF exerted pharmacological effects on COVID-19 by regulating IL-17 signalling pathway, TNF signalling pathway, AGE-RAGE signalling pathway in diabetic complications, and Toll-like receptor signalling pathway. Finally, molecular docking confirmed a strong binding affinity between the 7 main active components with the hub genes. The findings suggested that beta-sitosterol, kaempferol and luteolin might be the promising leading components due to their good molecular docking scores. [ABSTRACT FROM AUTHOR]

This study intends to address the function of miR‐301b/nuclear receptor subfamily 3 group C member 2 (NR3C2) in breast cancer. The Cancer Genome Atlas database was processed to investigate the expression of miR‐301b/NR3C2 in breast cancer samples, as well as the relationship between their expression and the prognosis of the patients. Cox regression analysis was performed to determine whether miR‐301b/NR3C2 was an independent predictor of the patient's prognosis. Associations between miR‐301b and NR3C2 were analyzed by prediction website, dual‐luciferase assay, and Pearson correlation coefficient. Quantitative polymerase chain reaction and Western blot analyses were implemented to detect gene expression. The relevant biological characteristics of MCF7 and BCAP‐37 cells were tested by cell counting kit‐8, colony formation, and transwell assays. Lower expression of NR3C2, which was closely related to the bad prognosis of breast cancer patients, was presented in breast cancer samples and can be used as an independent predictor. miR‐301b, as an upstream regulator of NR3C2, was highly expressed in breast cancer samples and can be used as an independent predictor as well. Notably, a higher level of miR‐301b and lower level of NR3C2 were related to the reduced overall survival in patients with breast cancer. The proliferative and migratory behaviors of cells were elevated or blocked after overexpression of miR‐301b or NR3C2, respectively. However, the above situation was attenuated after together upregulation of miR‐301b and NR3C2. The present data afforded evidence that miR‐301b may be a tumor‐promoting miRNA in breast cancer, and that miR‐301b/NR3C2 axis mediated tumor development from cell proliferation and migration. [ABSTRACT FROM AUTHOR]

The AB 7300 Real-time PCR Systems in our hospital have been detected malfunction for three times in a short term. The detection indicated the major reason for the malfunction attributed to the fuse of the solder of the COVER at the same position with the serial number 4344490 D1. This article explicitly introduces how to detect and maintain this equipment. It serves as a good reference for colleagues. Meanwhile the author raises five issues for further exploration and discussion.