What question did this study set out to answer?

This study aims to evaluate the renoprotective potential of marine-derived peptides from Sipunculus nudus in diabetic nephropathy.

Peptide GCSTVLC derived from Sipunculus nudus alleviates diabetic nephropathy partialy through NF-κB pathway regulation

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Randomized trial shows that peptide GCSTVLC reduces inflammation in diabetic nephropathy, suggesting new dietary therapies.

This study aims to evaluate the renoprotective potential of marine-derived peptides from Sipunculus nudus in diabetic nephropathy.
Protein hydrolysates from Sipunculus nudus were fractionated and assessed for their effects in a diabetic nephropathy mouse model.
The novel hexapeptide GCSTVLC was identified and tested for its ability to inhibit NF-κB pathway activation in renal tubular cells.
Bioassay-guided purification techniques, including LC–MS/MS, were employed to isolate bioactive peptides.
The peptide fraction SNH-A improved renal function in diabetic nephropathy mice, indicated by reduced serum creatinine and urinary protein levels.
GCSTVLC significantly suppressed the production of pro-inflammatory cytokines (TNF-α, IL-1β, MCP-1) in renal tubular cells.
GCSTVLC inhibited phosphorylation of IκBα and NF-κB p65, blocking NF-κB activation and reducing inflammatory responses.

Chen et al. (2026) studied this question.

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