Microbiota aggravates the pathogenesis of Drosophila acutely exposed to vehicle exhaust
Yujuan Li,
Lei Pan,
Pengcheng Li,
Gaole Yu,
Zhichao Li,
Shaokang Dang,
Faguang Jin,
Yandong Nan
Affiliations
Yujuan Li
Department of Respiratory and Critical Care Medicine, Tangdu Hospital of Air Force Military Medical University, Xi’an, Shaanxi, China
Lei Pan
Department of Respiratory and Critical Care Medicine, Tangdu Hospital of Air Force Military Medical University, Xi’an, Shaanxi, China
Pengcheng Li
Department of Respiratory and Critical Care Medicine, Tangdu Hospital of Air Force Military Medical University, Xi’an, Shaanxi, China
Gaole Yu
Department of Respiratory and Critical Care Medicine, Tangdu Hospital of Air Force Military Medical University, Xi’an, Shaanxi, China
Zhichao Li
Department of Respiratory and Critical Care Medicine, Tangdu Hospital of Air Force Military Medical University, Xi’an, Shaanxi, China
Shaokang Dang
Department of Respiratory and Critical Care Medicine, Tangdu Hospital of Air Force Military Medical University, Xi’an, Shaanxi, China
Faguang Jin
Corresponding author.; Department of Respiratory and Critical Care Medicine, Tangdu Hospital of Air Force Military Medical University, Xi’an, Shaanxi, China
Yandong Nan
Corresponding author.; Department of Respiratory and Critical Care Medicine, Tangdu Hospital of Air Force Military Medical University, Xi’an, Shaanxi, China
Vehicle exhaust (VE) is the primary cause of urban air pollution, which adversely affects the respiratory system, exacerbates lung diseases, and results in high mortality rates. However, the underlying mechanism of the pathogenesis is largely unclear. Here, we developed a Drosophila model to systematically investigate the effects of VE on their health and physiology. We found that VE significantly impaired life span and locomotion in Drosophila. Interestingly, there was an increase in bacterial load in the guts upon VE exposure, suggesting VE is able to induce dysbiosis in the guts. Microbiota depletion can ameliorate the impairment of life span and locomotion. VE causes permeability of intestinal epithelial cells and increases proliferation of intestinal cells, suggesting VE disrupts intestinal homeostasis. We elucidate the underlying mechanism by which VE triggers Imd and DUOX gene expression. Taken together, this Drosophila model provides insight into the pathogenesis of Drosophila exposure to VE, enabling us to better understand the specific role of microbiota.
