Longevity News

The Cost of Persistent Alarm: Temporal Transcriptional Reprogramming of Macrophages from Acute Activation to Chronic Immune Suppression by Day 11

Source: Frontiers - Health • Published: 26 Jun 2026, 00:00

The Cost of Persistent Alarm: Temporal Transcriptional Reprogramming of Macrophages from Acute Activation to Chronic Immune Suppression by Day 11

A detailed time-course study mapping transcriptional trajectories in macrophages during prolonged TLR4 stimulation and immune reprogramming.

Key Takeaways
  • Continuous TLR4 stimulation produced a reproducible macrophage chronic tolerant state by days 7–11
  • By days 7–11, macrophages upregulated PD-L1, TIM-3, IL-10, and CCL2 expression
  • Chronic tolerance silenced interferon-stimulated genes including IFITs, Irf7, Rsad2, and OAS family
Read Original Source