Collagen Peptides from Sturgeon Swim Bladder Extend Lifespan by 22.6% in Worm Model

Sturgeon swim bladder collagen peptides extended C. elegans lifespan by 22.6% and improved multiple healthspan indicators, mediated through MAPK, insulin/IGF-1, and NHR-80/FAT-6 lipid metabolism pathways.

Collagen peptides prepared by trypsinolysis of sturgeon swim bladder. Characterized by molecular weight and peptide composition (nano-LC-MS/MS). Tested in C. elegans for lifespan, body size, motor capacity, oxidative stress resistance, cell apoptosis, and epidermal barrier function. Transcriptome analysis to identify pathway mechanisms.

The anti-aging supplement market is enormous but largely unsupported by evidence. This study provides mechanistic data showing specific collagen peptides activate three established longevity pathways simultaneously. While worm results don't directly translate to humans, the identified pathways (insulin/IGF-1, MAPK, lipid metabolism) are conserved across species and are key targets in aging research.

This study adds sturgeon collagen to the growing list of food-derived bioactive peptides with potential anti-aging properties. The fact that these peptides activated multiple longevity pathways simultaneously — rather than just one — is particularly interesting, as multi-target interventions tend to be more effective for complex processes like aging. It also valorizes a waste product from sturgeon aquaculture, adding an economic incentive.

C. elegans is a simple worm model — results may not translate to mammals or humans. No dose-response relationship in mammals established. The 22.6% lifespan extension at a specific concentration may not scale linearly. Individual peptide contributions vs. synergistic effects are unclear. Human bioavailability of these collagen peptides after oral consumption is unknown.