Human Amnion Epithelial Cells and Their Derived Exosomes Alleviate Sepsis-Associated Acute Kidney Injury via...

Area of Science:

• Regenerative Medicine
• Cell Biology
• Nephrology

Background:

• Sepsis causes organ dysfunction, with sepsis-associated acute kidney injury (S-AKI) being a frequent and severe complication.
• Current prevention and treatment strategies for S-AKI remain challenging.
• Human amnion epithelial cells (hAECs) show potential in regenerative medicine, but their efficacy in S-AKI is unevaluated.

Purpose of the Study:

• To investigate the therapeutic potential of hAECs and their derived exosomes (EXOs) in a mouse model of S-AKI.
• To elucidate the mechanisms by which hAECs and EXOs exert protective effects on the kidneys during sepsis.

Main Methods:

• Sepsis was induced in mice using cecal ligation and puncture (CLP).
• hAECs and EXOs were administered intravenously post-CLP.
• Survival rates, serum creatinine, renal histology, endothelial integrity, and inflammatory pathways (NF-κB) were assessed.

Main Results:

• hAECs and EXOs significantly improved survival and kidney function in septic mice.
• Treatment with hAECs and EXOs preserved renal endothelial integrity and reduced systemic inflammation.
• EXOs maintained endothelial cell-cell junctions and inhibited hyperactivation, suppressing the NF-κB pathway.

Conclusions:

• hAECs and their derived EXOs ameliorate S-AKI by preventing endothelial dysfunction during early sepsis.
• Cellular or exosome-based therapies targeting endothelial disorders represent a promising approach for S-AKI treatment.