Project description:RNA-seq was performed on 4-week high glucose (25mM D-glucose) treated human retinal microvascular endothelial cells (HRMECs) and control (5mM D-glucose) passage-matched cells.
Project description:This SuperSeries is composed of the following subset Series:; GSE16691: Transcriptional regulation by Norrin-Frizzled4 signaling in the embryonic yolk sac; GSE16703: Long-term effect on the transcriptome of a decrement in Norrin/Frizzled4/Lrp signaling in retinal endothelial cells; GSE16705: Transcriptional response to Frizzled4 signaling in cultured retinal endothelial cells; GSE16707: Long-term effect on the transcriptome of loss of Frizzled4 signaling in cerebellar endothelial cells Experiment Overall Design: Refer to individual Series
Project description:To characterize the long-term effect on the transcriptome of a decrement in Norrin/Fz4/Lrp signaling, microarray hybridization was performed with RNA from acutely dissociated and anti-PECAM immunoaffinity-purified adult WT, Fz4-/-, Lrp5-/-, and Norrin- retinal vascular cells.
Project description:The differential expression of lncRNAs in human retinal endothelial cells (HRECs) was investigated with a commericially available microarray (ArrayStar Human LncRNA Microarray V3.0; ArrayStar Inc., Rockville, Maryland USA). Approximately 28,035 lncRNAs and 21,407 coding transcripts were detected using this microarray. In addition to the array findings, lncRNAs were further constructured using transcriptome databases (including RefSeq, Gencode, UCSC). Sequences were selected using proprietary strategies and each transcript is represented by a specific exon or splice junction probe, which can accurately identify an individual transcript. Nevertheless, both postive and negative probes for housekeeping genes were additionally used as controls.
Project description:Super-selective intra-ophthalmic artery chemotherapy (SSIOAC) is an organ-specific drug-delivery strategy to treat retinoblastoma, the most common primary ocular malignancy in children. Unfortunately, recent clinical reports associate adverse vascular toxicities with SSIOAC using melphalan, the most commonly used chemotherapeutic. To explore the reason for the unexpected vascular toxicities, we have developed in vitro studies with human retinal endothelial cells to test the effects of the chemotherapeutics and a non-human primate model to monitor the SSIOAC treatment in real-time and post-treatment. Melphalan and carboplatin (another chemotherapeutic used to treat retinoblastoma via SSIOAC) triggered migration, proliferation, and apoptosis when used to treat human retinal endothelial cells. Melphalan was associated with increased adhesion of leukocytes to human retinal endothelial cells, and tended to increase with increased cell expression of adhesion proteins (ICAM-1) and soluble chemotactic factors (IL-8). Histopathology post-SSIOAC indicated vessel wall sloughing, leukostasis, and vessel occlusion. We have established an in vitro human cell culture model and a non-human primate model to evaluate strategies designed to obviate vascular side effects, and optimize the efficacy of SSIAOC and the drug preparations used in SSIOAC. 4 non-treated (CNT) vs. 4 carboplatin-treated primary human retinal endothelial cells (RECs).
Project description:Super-selective intra-ophthalmic artery chemotherapy (SSIOAC) is an organ-specific drug-delivery strategy to treat retinoblastoma, the most common primary ocular malignancy in children. Unfortunately, recent clinical reports associate adverse vascular toxicities with SSIOAC using melphalan, the most commonly used chemotherapeutic. To explore the reason for the unexpected vascular toxicities, we have developed in vitro studies with human retinal endothelial cells to test the effects of the chemotherapeutics and a non-human primate model to monitor the SSIOAC treatment in real-time and post-treatment. Melphalan and carboplatin (another chemotherapeutic used to treat retinoblastoma via SSIOAC) triggered migration, proliferation, and apoptosis when used to treat human retinal endothelial cells. Melphalan was associated with increased adhesion of leukocytes to human retinal endothelial cells, and tended to increase with increased cell expression of adhesion proteins (ICAM-1) and soluble chemotactic factors (IL-8). Histopathology post-SSIOAC indicated vessel wall sloughing, leukostasis, and vessel occlusion. We have established an in vitro human cell culture model and a non-human primate model to evaluate strategies designed to obviate vascular side effects, and optimize the efficacy of SSIAOC and the drug preparations used in SSIOAC. 4 non-treated (MNT) vs. 4 melphalan-treated primary human retinal endothelial cells (RECs).
Project description:The mitochondria-associated endoplasmic reticulum (ER) membrane (MAM) is the physical contact site between the ER and the mitochondria and plays a vital role in the regulation of calcium trafficking and bioenergetics. Previous studies suggest that disturbances in calcium trafficking and dysregulation of reactive oxygen species in the ER and mitochondria may contribute to the pathogenesis of diabetic retinopathy (DR). However, few studies have examined the impact of diabetes on the retinal MAM proteome profile. In the present study, we used Long Evans rats with streptozotocin-induced long-term Type 1 diabetes to identify key pathways and proteins in the retinal MAM that are potentially implicated in the pathogenesis of DR.
Project description:This SuperSeries is composed of the following subset Series: GSE34379: Carboplatin-treated human retinal endothelial cells GSE34381: Melphalan-treated human retinal endothelial cells Refer to individual Series
Project description:Deregulated retinal angiogenesis directly cause vision loss in many ocular diseases, such as diabetic retinopathy and retinopathy of prematurity. To identify endothelial-specific genes expressed in angiogenic retinal vessels, we purified genetically labeled endothelial cells from Tie2-GFP transgenic mice and performed gene expression profiling using DNA microarray. To find out genes associated with angiogenesis, comparisons of microarray data were carried out between GFP-negative non-endothelial retinal cells and GFP-positive retinal endothelial cells in angiogenic P8 retina. Eighteen arrays are included. Utilizing fluorescence-activated cell sorting (FACS), we isolated endothelial cells as GFP-positive cells from P8 retina in homozygous Tie2-GFP transgenic mice. GFP-negative cells were served as non-endothelial control. RNA extracts from sorted cells were amplified and then hybridized to Affymetrix MGU74v2 series arrays in triplicate.