Antioxidant, Anti-Inflammatory, and Antidiabetic Activities of Bioactive Compounds from the Fruits of Livistona chinensis Based on Network Pharmacology Prediction

In this study, a chemical investigation on the fruits of Livistona chinensis (FLC) led to the isolation and identification of 45 polyphenols and 5 alkaloids, including two new compounds (Livischinol (1) and Livischinine A (46)), an undescribed compound (47) and 47 known compounds. FLC was predicted with novel potential antidiabetic function by collecting and analyzing the potential targets of the ingredients. Compound 32 exhibited significant alpha-glucosidase inhibitory activity (IC50=5.71 mu M) and 1, 6, and 44 showed the PTP1B inhibitory activity with IC50 values of 9.41-22.19 mu M, while that of oleanolic acid was 28.58 mu M. The competitive inhibitors of PTP1B (compounds 1 and 44) formed strong binding affinity, with catalytic active sites, proved by kinetic analysis, fluorescence spectra measurements, and computational simulations, and stimulated glucose uptake in the insulin-resistant HepG2 cells at the dose of 50 mu M. In addition, FLC was rich in antioxidant and anti-inflammatory bioactive compounds so that they could be developed as nutraceuticals against diabetes.

Automated summary

The study identified 45 polyphenols and 5 alkaloids in Livistona chinensis fruits, including two new compounds with potential antidiabetic function. Compound 32 showed significant alpha-glucosidase inhibitory activity, while compounds 1 and 44 exhibited competitive inhibition of PTP1B and stimulated glucose uptake in insulin-resistant cells at a dose of 50 μM. The fruits were also found to be rich in antioxidant and anti-inflammatory bioactive compounds, suggesting their potential development as nutraceuticals for diabetes treatment.