Project description:Fibroblast-like synoviocytes (FLS) were isolated from the hind paws of Col6a1-cre Bmal1-flox PER2::LUC mice for single cell sequencing to determine the effect of Bmal1 knockout on FLS cell function. FLS cells were isolated from joint digests by selection for Podoplanin expression, then fixed and barcoded for single cell transcriptomic analysis using a split-pool ligation-based transcriptomic sequencing (SPLiT-seq) approach.
Project description:Collagen 6 (COL6) is known for its role in a spectrum of congenital muscular dystrophies, which are often accompanied by respiratory dysfunction. However, little is known regarding the function of COL6 in the lung. We confirmed the presence of COL6 throughout the basement membrane region of mouse lung tissue. We studied lung structure and organization in a previously described Col6a1-/- mouse, which do not produce detectable COL6 in the lung. The Col6a1-/- mouse displayed multiple histopathological alveolar and airway abnormalities. The airspaces of Col6a1-/- lungs appeared simplified, with larger (29%, p<0.01) and fewer (31%, p<0.001) alveoli. These airspace abnormalities included a reduction in IsolectinB4+ alveolar capillaries and Sftpc+ ATII cells. Alterations in lung function consistent with these histopathological changes were evident. Col6a1-/- mice also displayed multiple airway changes including increased branching (59%, p<0.001), increased mucosal thickness (34%, p<0.001) and increased epithelial cell density (13%, p<0.001). Comprehensive transcriptome analysis revealed loss of COL6 is associated with reductions in integrin-paxillin-PI3K signaling in vivo. In vitro, COL6 promoted steady-state phospho-paxillin levels and reduced cell density (16-28%, p<0.05) at confluence. Inhibition of PI3K, or its downstream effectors, resulted in increased cell density to a level similar to that seen on matrices lacking COL6.
Project description:This dataset was used to determine the influence of conditioned media from Ch and how that influence affects genome-wide gene transcription in fibroblast-like synoviocytes In this dataset, we include data from untreated fibroblast-like synoviocytes and FLS cultured in chondrocyte-conditioned media, both normal FLS (C ) and JIA FLS (J).
Project description:Comparison between livers of FLS mice and livers of DS (DD shionogi) mice We used FLS mice as model animals of human NASH, while DS mice as control animals. FLS mice develops NASH spontaneously. DS mouse strain is a sister strain of the FLS mouse strain. We compared RNA from pooled livers of three FLS mice and three DS mice at 19 weeks. NASH in livers from FLS mice was confirmied pathologically while simple steatosis of DS mouse livers confirmed.
Project description:Comparison between livers of FLS mice and livers of DS (DD shionogi) mice We used FLS mice as model animals of human NASH, while DS mice as control animals. FLS mice develops NASH spontaneously. DS mouse strain is a sister strain of the FLS mouse strain.
Project description:Implantation is dependent on synchronized interactions between the conceptus and surrounding decidual cells but the involvement of clock genes in this process is not well understood. Circadian oscillations are predicated on transcriptional-translational feedback loops, which balance the activities of the transcriptional activators CLOCK and BMAL1 and repressors encoded by PER and CRY genes. Here we show that loss of PER2 expression silences circadian oscillations in decidualizing human endometrial stromal cells (HESCs). Downregulation was preceded by reduced CLOCK binding to a noncanonical E-box enhancer in the PER2 promoter and occurred between 12 - 24 h after exposure to a deciduogenic stimulus. RNA sequencing revealed that premature inhibition of PER2 by siRNA knockdown leads to a grossly disorganised decidual response. Gene ontology analysis highlighted a preponderance of cell cycle regulators amongst the 1,121 genes perturbed upon PER2 knockdown. Congruently, PER2 inhibition abrogated mitotic expansion of differentiating HESCs by inducing cell cycle block at G2/M. Analysis of mid-luteal endometrial biopsies revealed an inverse correlation between PER2 transcript levels and the number of miscarriages in women suffering reproductive failure. Thus, PER2 synchronizes mitotic expansion of HESCs with a periodic decidual gene expression; uncoupling of these events may cause persistent pregnancy failure. Endometrial mRNA profiles of paired control (siRNA-NT) and siRNA-PER2 were generated by deep sequencing, in triplicate using Illumina