Ming Zhao, Nuo Chen, Yaxin Guo, Nan Wu, Baihui Cao, Bing Zhan, Yubin Li, Tian Zhou, Faliang Zhu, Chun Guo, Yongyu Shi, Qun Wang, Yan Li, Lining Zhang
Vacuolar-type H+ -ATPase (V-ATPase) critically controls phagosome acidification to promote pathogen digestion and clearance in macrophage. However, the specific subunits of V-ATPase have been evidenced to play contradictory functions in inflammatory cytokines generation and secretion exposure to external bacterial or LPS stimulation. Therefore, identifying the unique function of the separate subunit of V-ATPase is extremely important to regulate macrophage function. Here, we found that D-mannose, a C-2 epimer of glucose, suppressed ATP6V1B2 lysosomal translocation to inhibit V-ATPase activity in macrophages, thereby causing the scaffold protein axis inhibitor protein (AXIN) recruitment to lysosomal membrane and AMPK activation...
September 1, 2023: Molecular Immunology