Chaetocochin J exhibits anti-hepatocellular carcinoma effect independent of hypoxia.

The most studied epipolythiodioxopiperazine (ETP) alkaloids, such as chetomin, gliotoxin and chaetocin, were reported to exert their antitumor effects through targeting HIF-1α. Chaetocochin J (CJ) is another ETP alkaloid, of which the effect and mechanism on cancer are not fully elucidated. Considering the high incidence and mortality of hepatocellular carcinoma (HCC) in China, in the present study, using HCC cell lines and tumor-bearing mice as models, we explored the anti-HCC effect and mechanism of CJ.

Near infrared light activatable PEI-wrapped bismuth selenide nanocomposites for photothermal/photodynamic therapy induced bacterial inactivation and dye degradation.

The inactivation of bacteria and the degradation of organic pollutants by engineered nanomaterials (NMs) are very effective approaches for producing safe and clean drinking water. The development of new NMs which can act as NIR light mediated antimicrobial agents as well as photocatalytic agents is highly desired. In this study, a novel BiSe nanoplates (NPs) NM was prepared by a high-temperature reaction (colloidal synthesis) followed by wrapping of the surface with polyethyleneimine (PEI) through electrostatic interactions.

Citrinal B, natural 11 beta-hydroxysteroid dehydrogennase type 1 inhibitor identified from structure-based virtual screening.

Citrinal B, a tricyclic compound from endophytic fungus Colletotrichum capsici in our previous studies, exhibited significant inhibitory activity against 11β-hydroxysteroid dehydrogenase type 1 (11 β-HSD1) in vitro and showed strong binding affinity to 11β-HSD1. Moreover, citrinal B treatments decreased the lipid droplet accumulation associate with the inhibition of 11β-HSD1 expression in differentiate induced 3T3-L1 preadipocytes. Furthermore, the molecular docking demonstrated that citrinal B coordinated in the active site of 11β-HSD1 is essential for the ability of diminishing the enzyme activity.