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The combination of Gardeniae Fructus (ZZ) and Scutellariae Radix (HQ) is a traditional Chinese medicine used for Alzheimer’s disease (AD). However, the molecular mechanisms underlying its anti-dementia effects, particularly its multi-component synergy and pathway modulation, remain poorly understood.
Our study employed an integrated systems pharmacology approach to mechanistically decode the anti-AD properties of ZZ-HQ, combining network pharmacology predictions, molecular docking simulations, and experimental validation to identify critical bioactive components, molecular targets, and therapeutic pathways.
A comprehensive network pharmacology analysis was performed to identify bioactive compounds within the ZZ-HQ complex and their potential protein targets associated with AD. Molecular docking was utilized to predict and assess the binding interactions between key bioactive compounds and AD-related protein targets. Experimental validation focused on baicalin, a major active compound in the ZZ-HQ complex, evaluating its effects on cell viability, apoptosis regulation, oxidative stress reduction, and the activation of the PI3K/Akt signaling pathway.
Fifty-four bioactive compounds were identified in the ZZ-HQ complex, interacting with 258 AD-associated proteins. Key compounds, such as baicalein and norwogonin, demonstrated strong binding affinities with pivotal proteins, including SRC and PIK3R1. Experimental studies further confirmed that baicalin significantly improved cell viability by activating the PI3K/Akt pathway, reducing apoptosis, and alleviating oxidative stress.
Our study uncovered the therapeutic potential of the ZZ-HQ combination in addressing AD through multi-target mechanisms, particularly via modulation of the PI3K/Akt pathway and oxidative stress. These findings provide a scientific basis for the pharmacological effects of ZZ-HQ and offer valuable insights for further research on its potential application in AD treatment.
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