single-nucleus RNA sequencing revealed changes in microenvironment of epididymal adipose tissue during the development of obesity in mouse

Obesity causes the change of microenvironment of adipose tissue and induces the occurrence of adipose tissue inflammation. The objective of this study was to analyze the internal mechanism of microenvironment change in mouse parepididymal adipose tissue by single-nucleus RNA sequencing. Nutritional obesity mouse model was established and verified by morphology, blood index and liver oil red O staining. Select Ctrl group, Mid_Ob group and Ob group, and take 8 mice at 3 time points. The changes of cell population, gene and signaling pathway expression in the adipose tissue of the parastriatic muscle in mice during obesity were detected by single-nucleus RNA sequencing and immunohistochemistry. According to the results of single-nucleus RNA sequencing, adipose tissue was divided into fibroblasts, macrophages, neutrophils and endothelial cells. It is found that all cell types have changes during the development of obesity and play an important role in regulating the microenvironment of adipose tissue. Overall design: The model of obese mice was established by feeding high-fat diet, and then the mice were killed, and the adipose tissue of the epididymis was taken for monocyte sequencing