Sea Cucumber Peptide Nanoparticles Target Liver Cells to Treat Alcoholic Liver Disease | Research

The takeaway

Sea cucumber peptide-galactose nanocarriers (42 nm) targeted hepatocytes via galactose receptor, achieving 75.5% drug encapsulation and significantly reducing ethanol-induced liver cell damage and oxidative stress.

Liver GPS via sugar
Galactose on the peptide nanoparticle surface guides it specifically to liver cells through their galactose receptors

What the researchers found

Silymarin@SCP-Gal nanocarriers: 42.28 nm, 75.54% encapsulation, hepatocyte-targeted via galactosyl receptor, significantly reduced ethanol-induced cytotoxicity and oxidative stress in LO2 cells.

Why it matters

Alcohol-related liver disease affects millions with limited treatment. Peptide-based targeted nanocarriers improve drug delivery directly to damaged liver cells.

How the study worked

Maillard conjugation of SCP with galactose, silymarin loading, nanoparticle characterization (size, morphology, stability, biocompatibility), cellular uptake/retention in LO2 cells, and cytoprotection against ethanol injury.

What this study cannot tell us

In vitro only. In vivo liver targeting and ALD treatment efficacy not assessed. SCP source and composition may vary.

How to read the evidence

In vitro proof-of-concept with thorough characterization. Needs in vivo validation.

When this study was published

Published in 2025.

The bigger picture

Peptide-sugar conjugates for organ-specific drug delivery combine the biocompatibility of natural peptides with the targeting precision of sugar-receptor interactions.

Questions still open

Would these nanoparticles effectively target the liver in vivo?
Could they deliver other hepatoprotective drugs beyond silymarin?
How does the manufacturing process scale?

Common questions

How do these nanoparticles find the liver?

They are coated with galactose sugar, which liver cells have receptors for. The nanoparticles essentially have a chemical address label that delivers them directly to liver cells.

Could this treat alcohol-related liver damage?

In cell culture, these nanoparticles significantly protected liver cells from alcohol damage. Whether this works in living organisms needs further testing.

Read the original research

A hepatocyte targeted silymarin sea cucumber peptide-galactose nanoparticle for the alleviation of ethanol-induced damage in cells.

Colloids and surfaces. B, Biointerfaces, 257, 115152

View on PubMed ↗Publisher’s paper ↗

Citation

Hao, Sijia; Wang, Yuxiao; Lv, Yueqi; Liu, Kangjing; Tan, Mingqian. (2026). A hepatocyte targeted silymarin sea cucumber peptide-galactose nanoparticle for the alleviation of ethanol-induced damage in cells.. Colloids and surfaces. B, Biointerfaces, 257, 115152. https://doi.org/10.1016/j.colsurfb.2025.115152