AF6 orchestrates macrophage polarization via JAK2-STAT3 signaling and supports intestinal regeneration by stimulating stem cell proliferation
By
Tao Jian
Xiaoxia Dong
Jingwen Kong
Xinyu Wang
Meiyan Qi
Lixing Zhan
Lilei Zhuang
June 19, 2026
Objective: To investigate the role of the scaffold protein AF6 in macrophage polarization and its impact on colitis pathogenesis.
Approach: Key Findings: AF6 promotes pro-inflammatory macrophage polarization and exacerbates colitis. Deletion of AF6 in macrophages impairs JAK-STAT3 signaling and shifts polarization away from pro-inflammatory M1. AF6-deficient macrophages enhance epithelial regeneration through increased IL-10 production and activation of Wnt/β-catenin signaling. Interpretation: The study identifies AF6 as a critical regulator of macrophage polarization via the JAK2-STAT3 pathway.
Limitations: The study primarily utilizes a mouse model, which may not fully replicate human IBD. Further research is needed to explore the clinical relevance of targeting the AF6-JAK2-STAT3 axis. Conclusion: AF6 serves as a key immune regulator in macrophages, influencing inflammation and tissue repair in colitis.