Objective:

To identify key regulators of ubiquitination dysregulation in specific immune cells during sepsis and evaluate their potential as diagnostic biomarkers and therapeutic targets.

Key Findings:

• Conventional dendritic cells (cDCs) were the most transcriptionally perturbed immune population in sepsis, highlighting their critical role.
• Type-1 conventional dendritic cells (cDC1) showed significant activation of ubiquitination signatures, indicating their involvement in sepsis.
• UBE2F was identified as a key regulator with strong upregulation and functional relevance in sepsis models, suggesting its importance in therapeutic strategies.
• Silencing UBE2F reduced dendritic cell activation, proinflammatory cytokine production, and organ injury, ultimately improving survival in septic mice.

Interpretation:

cDC1 plays a crucial role in ubiquitination-mediated immune dysregulation during sepsis, with UBE2F emerging as a promising biomarker and therapeutic target, warranting further investigation.

Limitations:

• The study relies on specific datasets and may not encompass all immune cell dynamics in sepsis, which could limit the generalizability of the findings.
• Further clinical validation is needed to confirm the diagnostic and therapeutic potential of UBE2F, ensuring its applicability in diverse patient populations.

Conclusion:

UBE2F is a potential diagnostic biomarker and therapeutic target for sepsis, highlighting the importance of cDC1 in the disease's immune dysregulation.