Unknown,Transcriptomics,Genomics,Proteomics

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Inflammatory profile of NOD.Batf3-/- islets

ABSTRACT: NOD mice deficient in the transcription factor Batf3 never develop diabetes. The goal of this study was to determine if NOD.Batf3-/- mice islets had any inflammatory signature associated with type 1 diabetes. Islets of Langerhans were isolated from NOD, NOD.Batf3-/-, and NOD.Rag1-/- and then compared to determine inflammatory gene profiles. At 6 and 8 weeks of age, NOD.Batf3-/- islets had an absence of inflammatory gene expression and were almost identical to uninflamed NOD.Rag1-/- islets. This work shows that absence of the Batf3 transcription factor is sufficient to prevent all the inflammatory sequelae of autoimmune diabetes. RNA was isolated from the pancreatic islets of Langerhans of 27 experimental mice. Mice were aged either 6 or 8 weeks. Three genotypes were tested: NOD, NOD.Rag1-/-, and NOD.Batf3-/-. There were 3-6 biological replicates per condition. All mice were female. All data was normalized using RMA in Arraystar.

ORGANISM(S): Mus musculus

SUBMITTER: Javier Carrero

PROVIDER: E-GEOD-61847 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Liver dysfunction and cirrhosis affect vasculature in several organ systems and cause impairment of organ functions, thereby increasing morbidity and mortality. If a mouse model of hepatopulmonary syndrome (HPS) could be established, greater insight into the genetic basis of the disease would be gained. Our objectives were to establish a mouse model of lung injury after common bile duct ligation (CBDL) and to investigate pulmonary pathogenesis for application in future therapeutic approaches. Balb/c mice were subjected to CBDL. Immunohistochemical analyses and real-time quantitative reverse transcriptional polymerase chain reaction were performed on pulmonary tissues. The presence of HPS markers were detected by western blot and microarray analyses. We observed extensive proliferation of CD31-positive pulmonary vascular endothelial cells 2 weeks after CBDL, and identified 11 up-regulated and 8 down-regulated proteins that were associated with angiogenesis. MMP-9 protein was highly expressed at 3 weeks after CBDL, and less expressed in lungs of the control group. Contrary to our expectation, lung pathology in our mouse model exhibited differences from that of rat models, and the mechanisms responsible for these differences are unknown. This phenomenon may be explained by contrasting processes related to TNF induction of angiogenic signaling pathways in the inflammatory phase; thus, we suggest that our mouse model can be applied to pulmonary pathological analyses in the inflammatory phase, i.e., to systemic inflammatory response syndrome, acute lung injury, and MOD syndrome. After induction of anesthesia, a median abdominal incision was made and the common bile duct was identified. The duct was dissected carefully under a microscope, and doubly ligated with 7-0 Prolene and transected. In the sham operation (control) group, the duct was dissected without common bile duct ligation. Mice were sacrificed at 2 and 3 weeks after surgery. CD31-positive cells were assembled from three mice in each group.

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Inflammatory profile of NOD.Batf3-/- islets

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