Interaction mechanism of egg derived peptides RVPSL and QIGLF with dipalmitoyl phosphatidylcholine membrane: microcalorimetric and molecular dynamics simulation studies

Cordycepin's therapeutic potential: in vivo transport, transbilayer diffusion and anti-aging effects

BACKGROUND

Cordycepin (3'-deoxyadenosine) is a bioactive compound known for its numerous beneficial properties, including antioxidant, anti-aging and antitumor effects. Despite its promising therapeutic potential, the in vivo transport mechanisms of cordycepin remain inadequately understood. Previous studies have highlighted its biological activity, but there is limited information regarding its transport and distribution, as well as how it interacts with biological systems to exert these effects. The present study explored the transport mechanisms of cordycepin, specifically its interaction with bovine serum albumin (BSA) transporters and 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) liposomes, and assessed its anti-aging effects through cellular experiments.

RESULTS

The study demonstrates that cordycepin effectively interacts with DPPC liposomes, improving its therapeutic efficacy. Spectral analysis shows strong binding between cordycepin and transporters, aiding its distribution in the bloodstream and targeted accumulation in tissues. Additionally, cellular tests reveal that cordycepin inhibits butyl hydroperoxide-induced cellular senescence in a dose-dependent manner.

CONCLUSION

The interaction of cordycepin with BSA transporters and DPPC liposomes enhances its distribution and therapeutic potential. The compound also shows promise as an anti-aging agent by reducing cellular senescence. These findings provide insight into cordycepin's in vivo behavior and suggest strategies to enhance its pharmacological effectiveness. © 2025 Society of Chemical Industry.

Exposure estimation and neurotoxicity inhibition of dioxins in sensitive populations near domestic waste incineration plant through adverse outcome pathway

The neurotoxicity induced by dioxins has been recognized as a serious concern to sensitive population living near waste incineration plants. However, investigating the intracellular neurotoxicity of dioxin in humans and the corresponding mitigation strategies has been barely studied. Thus, a domestic waste incineration plant was selected in this study to characterize the neurotoxicity risks of sensitive populations by estimating the ratio of dioxin in human cells using membrane structure dynamics simulation; and constructing a complete dioxin neurotoxicity adverse outcome pathway considering the binding process of AhR/ARNT dimer protein and dioxin response element (DRE). Six dioxins with high neurotoxicity risk were identified. According to the composite neurotoxicity risk analysis, the highest composite neurotoxicity risk appeared when the six dioxins were jointly exposed. Dietary schemes were designed using 1/2 partial factor experimental design to mitigate the composite neurotoxicity risk of six dioxins and No. 16 was screened as the optimum combination which can effectively alleviate the composite neurotoxicity risk by 29.52%. Mechanism analysis shows that the interaction between AhR/ARNT dimer protein and DRE was inhibited under the optimal dietary scheme. This study provides theoretical feasibility and reference significance for assessing composite toxicity risks of pollutants and safety mitigation measures for toxic effects.