A combined in vitro and in silico study of the inhibitory mechanism of angiotensin-converting enzyme with peanut peptides

Year Published: 2024

Journal

Int J Biol Macromol

Authors

Jiale Liu 1 , Wentian Song 1 , Xue Gao 1 , Jiaoyan Sun 1 , Chunlei Liu 1 , Li Fang 1 , Ji Wang 1 , Junhua Shi 1 , Yue Leng 1 , Xiaoting Liu 2 , Weihong Min 3

Methods

Food-derived peptides with low molecular weight, high bioavailability, and good absorptivity have been exploited as angiotensin-converting enzyme (ACE) inhibitors. In the present study, in-vitro inhibition kinetics of peanut peptides, in silico screening, validation of ACE inhibitory activity, molecular dynamics (MD) simulations, and HUVEC cells were performed to systematically identify the inhibitory mechanism of ACE interacting with peanut peptides.

Key Findings

Key Findings: The results indicate that FPHPP, FPHY, and FPHFD peptides have good thermal, pH, and digestive stability. MD trajectories elucidate the dynamic correlation between peptides and ACE and verify the specific binding interaction. Noteworthily, FPHPP is the best inhibitor with a strongest binding affinity and significantly increases NO, SOD production, and AT2R expression, and decreases ROS, MDA, ET-1 levels, ACE, and AT1R accumulation in Ang II-injury HUVEC cells.