Lactylation modification - a bridge between sepsis and macrophage metabolic reprogramming

Area of Science:

• Immunology
• Metabolic pathways
• Epigenetics

Background:

• Sepsis is a life-threatening organ failure syndrome due to dysregulated host responses to infection.
• Macrophages are key players in sepsis, driving hyperinflammation and subsequent immunosuppression.
• Macrophage function is dynamically regulated by metabolic reprogramming and phenotype adaptation.

Purpose of the Study:

• To examine the role of histone lactylation in regulating macrophage function during sepsis.
• To explore the link between metabolic reprogramming and epigenetic modifications in sepsis-associated macrophages.
• To highlight lactylation as a potential therapeutic target for sepsis.

Main Methods:

• Review of emerging evidence on macrophage metabolism and epigenetic modifications.
• Analysis of the role of lactate and lactylation in modulating inflammatory responses.
• Examination of phenotype-metabolism interdependence in sepsis.

Main Results:

• Lactate, via histone lactylation, emerges as a critical regulator of macrophage function.
• Histone lactylation fine-tunes macrophage functionality and corrects inflammatory imbalance in sepsis.
• Metabolic reprogramming, specifically lactylation, is central to macrophage adaptation in sepsis.

Conclusions:

• Histone lactylation is a key epigenetic mechanism controlling macrophage behavior in sepsis.
• Lactylation presents novel diagnostic and therapeutic opportunities for sepsis management.
• Understanding lactylation's role in metabolic control is crucial for sepsis research.