Polysaccharide Nanofiber-Stabilized Pickering Emulsion Microparticles Induce Pyroptotic Cell Death in Hepatocytes and...

Area of Science:

• Biomedical Engineering
• Cell Biology
• Immunology

Background:

• Understanding how microparticles interact with liver cells is crucial for assessing their safety and therapeutic potential.
• Liver cells, including hepatocytes and Kupffer cells, play key roles in host defense and inflammation.

Purpose of the Study:

• To compare the cell death responses of different liver cell types to various emulsion microparticles.
• To investigate the inflammatory potential of polysaccharide nanofiber-stabilized Pickering emulsions (PPEs).

Main Methods:

• Comparing cell death markers (e.g., lactate dehydrogenase release, pyroptosis indicators) in response to four types of emulsion particles.
• Co-culturing lipopolysaccharide-primed Kupffer cells with emulsion microparticles to assess inflammatory cytokine release.

Main Results:

• Polysaccharide nanofiber-stabilized Pickering emulsions (PPEs) induced significant cell death, including pyroptosis, in hepatocytes and Kupffer cells.
• PPEs triggered the release of inflammatory cytokine interleukin-1β, indicating their role in mediating inflammation.

Conclusions:

• Well-designed PPEs can induce pyroptosis in liver cells, offering a novel mechanism for therapeutic intervention.
• These findings suggest potential applications for PPEs as anticancer drugs or vaccine adjuvants in managing inflammation-related diseases.