Jinhua Ham-Derived Peptide NW-9 Reduces Liver Inflammation and Damage via cGAS-STING Pathway
Background
The global prevalence of nonalcoholic fatty liver disease (NAFLD) is rising, posing a significant public health challenge. Current therapeutic strategies often fall short, highlighting an urgent need for novel, effective, and safe interventions. Bioactive peptides (BAPs), particularly those derived from food sources like Jinhua ham, offer a promising avenue due to their diverse biological properties and generally favorable safety profiles. Jinhua ham, a traditional meat product, is known to contain various BAPs with documented anti-inflammatory and liver-protective effects. This study specifically addresses the gap in identifying and characterizing dual-function peptides that can simultaneously combat inflammation and protect the liver, leveraging natural food sources to develop new therapeutic candidates.
Study Design
Researchers aimed to isolate novel dual-function peptides from Jinhua ham hydrolysates. They employed a multi-stage identification process, beginning with mass spectrometry to characterize peptides present in the hydrolysates. This was followed by computational virtual screening to predict potential bioactivities, and further refined using molecular docking and molecular dynamics simulations to assess peptide-target interactions. For in vitro validation, 1 mg/mL of NWRPPQPIK (NW-9) was tested on relevant cell models to measure its impact on liver injury markers and inflammatory cytokines. The study also included an in vivo component to confirm therapeutic effects, though specific animal models, doses, or durations were not detailed in the abstract.
Results
The identified peptide, NWRPPQPIK (NW-9), demonstrated significant anti-inflammatory and hepatoprotective effects in vitro. At a concentration of 1 mg/mL, NW-9 effectively reduced key markers of liver damage and inflammation. Specifically, it decreased aspartate aminotransferase (AST) levels by 51.66% and alanine aminotransferase (ALT) levels by 54.08%. Furthermore, NW-9 significantly attenuated the production of pro-inflammatory cytokines: interleukin-1 beta (IL-1β) was reduced by 24.66%, interleukin-6 (IL-6) by 33.71%, and tumor necrosis factor-alpha (TNF-α) by 15.79%. These beneficial effects were attributed to NW-9's ability to alleviate liver inflammatory damage caused by the cGAS-STING pathway.
Key Findings
- Jinhua ham hydrolysates contain novel dual-function peptides with anti-inflammatory and hepatoprotective properties.
- The peptide NWRPPQPIK (NW-9) was identified through computational and experimental methods.
- In vitro, 1 mg/mL NW-9 reduced AST by 51.66% and ALT by 54.08%.
- NW-9 decreased pro-inflammatory cytokines IL-1β by 24.66%, IL-6 by 33.71%, and TNF-α by 15.79%.
- NW-9's therapeutic effects are mediated by alleviating inflammation via the
cGAS-STING pathway.
Why It Matters
This research provides a compelling foundation for the development of natural, dual-function agents for liver health, particularly in the context of NAFLD. For individuals seeking natural alternatives or complementary therapies, Jinhua ham-derived peptides like NW-9 could represent a novel functional food ingredient or supplement. The identification of a specific mechanism, the cGAS-STING pathway, offers a targeted approach for future drug development and optimization. While currently in preclinical stages, these findings suggest a new class of compounds that could eventually contribute to dietary strategies or even pharmaceutical interventions for liver inflammation and damage. The potential for high-value utilization of food-derived bioactive peptides also opens doors for sustainable biotech innovation.
nwrppqpik
jinhua ham
nafld
anti-inflammatory
hepatoprotective
cgas-sting