Project description:Studying the conservation and differences of regulation between human and mouse helps understand gene regulation on mouse models. Chromatin loop is an important gene regulatory mechanism to drive the 3D regulation between genes and their regulatory elements. Here, we performed eHi-C to profile genome wide contacts in mouse strains B6 and CAST islet beta cells, together with the loops identified in human islet alpha and beta cells from previous studies (GSE195523). The results show that the conserved chromation loop and open chromatin regions highlight the function of T2D risk loci and improve our understanding in islet biology.
Project description:total RNA from mouse (male c57BL/6) spleen labeled with Cy3 vs total RNA from mouse (male c57BL/6) B cells treated with TGF-beta (transforming growth factor-beta) labeled with Cy5- time course with repeats Keywords: ordered
Project description:Experimental Description<br><br>Mice overexpressing lymphotoxin alpha and beta, mice overexpressing lymphotoxin alpha and beta with concomitant hepatocyte-specific knock-out of the IKK-beta gene, and wild type C57BL/6 mice were sacrificed at 3 and 9 months of age, resp. From the respective livers, mRNA was extracted and whole genome transcription profiling was conducted with hybridization on day 1,2 or 3.
Project description:total RNA from mouse (male c57BL/6) spleen labeled with Cy3 vs total RNA from mouse (male c57BL/6) B cells treated with Interferon-beta (IFN beta) labeled with Cy5- time course with repeats Keywords: ordered
Project description:Rodent models are widely used to study diabetes. Yet, significant gaps remain in our understanding of mouse islet physiology that reduce their accuracy as a model for human islet disease. We generated comprehensive transcriptomes of mouse beta and alpha cells using a novel bitransgenic mouse model generated for this purpose. This enables systematic comparison across thousands of genes between the two major endocrine cell types of the islets of Langerhans whose principal hormones are of cardinal importance for glucose homeostasis. Our data leveraged against similar data for human beta cells reveal a core common beta cell transcriptome of 9900+ genes and marked differences in the repertoire of receptors and long non-coding RNAs between mouse and human beta cells. The comprehensive comparison of the (dis)similarities between mouse and human beta cells represents an invaluable resource to boost the effectiveness by which rodent models offer guidance in finding cures for human diabetes. FACS purified alpha and beta cells from the same islets. Islets were isolated from bitransgenic offspring of a cross between mIns1-H2b-mCherry and S100b-eGFP transgenic reporter mice that mark beta and alpha cells, respectively. Islets from two replicate groups of 10 or 11 animals were pooled by sex to obtain sufficient material. Pooled islets were dissociated, sorted and collect in Trizol for RNA isolation and library construction.
