Project description:The disruption of cholesterol homeostasis leads to an increase in cholesterol levels which results in the development of cardiovascular disease. Mitogen Inducible Gene 6 (Mig-6) is an immediate early response gene that can be induced by various mitogens, stresses, and hormones. To identify the metabolic role of Mig-6 in the liver, we conditionally ablated Mig-6 in the liver using the Albumin-Cre mouse model (Albcre/+Mig-6f/f; Mig-6d/d). Mig-6d/d mice exhibit hepatomegaly and fatty liver. Serum levels of total, LDL, and HDL cholesterol and hepatic lipid were significantly increased in the Mig-6d/d mice. The daily excretion of fecal bile acids was significantly decreased in the Mig-6d/d mice. DNA microarray analysis of mRNA isolated from the livers of these mice showed alterations in genes that regulate lipid metabolism, bile acid, and cholesterol synthesis, while the expression of genes that regulate biliary excretion of bile acid and triglyceride synthesis showed no difference in the Mig-6d/d mice compared to Mig-6f/f controls. These results indicate that Mig-6 plays an important role in cholesterol homeostasis and bile acid synthesis. Mice with liver specific conditional ablation of Mig-6 develop hepatomegaly and increased intrahepatic lipid and provide a novel model system to investigate the genetic and molecular events involved in the regulation of cholesterol homeostasis and bile acid synthesis. Defining the molecular mechanisms by which Mig-6 regulates cholesterol homeostasis will provide new insights into the development of more effective ways for the treatment and prevention of cardiovascular disease.
Project description:The majority of pregnancy losses result from implantation failure. Successful embryo implantation involves a delicate interaction between the receptive uterus and an implantation-competent blastocyst. Understanding the mechanisms regulating the endometrial receptivity during preimplantation are essential for improving pregnancy outcomes. Mitogen-inducible gene 6 (MIG-6) is a key mediator of progesterone signaling in the endometrium.MIG-6 loss results in implantation failure due to non-receptive endometrium. We applied single cell RNA sequencing to determine the composition of different cell types and functions within non-receptive endometrium from uterine specific Mig-6 knock-out (Pgrcre/+Mig-6f/f; Mig-6d/d) mice. Mig-6d/d mice revealed altered gene expression in the epithelial and stromal cells. We identified key gene expression changes in the non-receptive endometrium of Mig-6d/d mice, providing valuable insights into the role of progesterone signaling in implantation.
Project description:We report the application of migrasomes in wound healing process. ScRNA-seq was used to compare the differences in ctrl and mig group.
