Transcriptomics

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Gene expression analysis of diabetic kidney cortices obtained from ICAM-1 deficient mice and wild type mice.


ABSTRACT: In the present study, we aimed to determine the genes involved in inflammatory process of diabetic nephropathy. ICAM-1+/+ and ICAM-1-/- mice aged 8 weeks were divided into four groups: 1) nondiabetic ICAM-1+/+ mice (ND-WT), 2) nondiabetic ICAM-1-/- mice (ND-KO), 3) streptozotocin (STZ)-induced diabetic ICAM-1+/+ mice (DM-WT), and 4) STZ-induced diabetic ICAM-1-/- mice (DM-KO). Three months after the induction of diabetes, total RNA was extracted from each specimen of renal cortex. We examined gene expression profiles of four groups. We identified 193 genes; the ratio of expression level of DM-WT was >2 or <0.5 of that of DM-KO. Of 193 genes, hierarchical clustering identified 33 genes that were significantly upregulated only in DM-WT but not remarkable in ND-WT and ND-KO. Functional annotation of these 33 genes revealed that the significant functions of them were related to the immune or inflammatory process: immune response, response to stimulus, defense response, immune effector process and antigen processing and presentation. These genes contained several inflammatory related genes, such as chemokine (C-X-C motif) ligand 10, chemokine (c-c motif) ligand 12, and chemokine (c-c motif) ligand 8. In this cluster, we focused on cholecystokinin (CCK) because CCK is one of the most up-regulated genes. Real-time RT-PCR revealed that CCK mRNA expression was significantly up-regulated in DM-WT compared with DM-KO. These results suggest that CCK may play a critical role in the progression of diabetic nephropathy by controlling inflammation in diabetic kidney.

ORGANISM(S): Mus musculus

PROVIDER: GSE21390 | GEO | 2014/10/08

SECONDARY ACCESSION(S): PRJNA126059

REPOSITORIES: GEO

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