Project description:Npc1 is a cholesterol transporter located on lysosomal membrane, and whether it is involved in regulating the function and differentiation of β cells is unclear. To understand molecular basis of the phenotype caused by Npc1 loss in β cells, we isolated islets from 2-week-old WT and Npc1KO mice for single-cell sequencing. We compared the gene expression profiles of different subpopulation of islet cells and found many changes of islet subpopulation and biological pathway occurred in Npc1KO islets.
Project description:The mechanistic target of rapamycin complex 1 (mTORC1) regulates beta cell growth and mass; yet it remains unclear whether it also directs beta cell functional maturation. To understand the global molecular basis of the phenotype caused by the loss of Raptor in beta cells, we isolated pancreatic islets from 8-week-old βRapKO and WT mice. We compared gene-expression profile by Affymetrix microarray of islets, which revealed that a number of mRNAs were dys-regulated in Raptor-deficient islets.
Project description:Protein source in diet greatly influences the incidence of type-1 diabetes (T1D) in non-obese diabetic (NOD) mouse colonies. NOD mice fed a diet containing hydrolyzed casein (HC) as the sole protein source are protected from T1D. Replacing 1/5th of the HC with gluten restores high T1D to NOD mice. We hypothesized that gluten might promote inflammation in the islets. We used single cell RNA sequencing (scRNAseq) to characterize and contrast the transcriptional profiles of endocrine cells and islet infiltrating leukocytes from the pancreatic islets of Langerhans of NOD mice fed a 20% HC diet or a 16% HC + 4% gluten diet.
Project description:The pancreas islets RNA expressions were compared between WT (exon2 floxed) mice and Cdh13 KO (exon2 deleted) mice. The islets were isolated from the mice at 8wks old, 14wks old under normal chow diet, and 14wks old under HFD conditions.
Project description:We performed RNA sequencing of islets of Langerhans isolated from wild type and Zeb1200M mice to determine the transcriptomic effects of mutating miR-200 binding sites in the endogenous Zeb1 3'UTR.