Key Features
Enhance your research with our curated data sets and powerful platform features. Pluto Bio makes it simple to find and use the data you need.
Learn MoreMucopolysaccharidosis type I (MPS I) is caused by genetic defects in alpha-L-iduronidase (IDUA), a lysosomal enzyme involved in the breakdown and recycling of glycosaminoglycans (GAGs). Although an enzyme replacement therapy is available, the efficacy for the treatment of neuropathic symptoms is limited. To facilitate drug discovery and model disease pathophysiology, we have generated neural stem cells (NSCs) from MPS I patient-derived iPSCs. NSCs exhibited characteristic disease phenotypes with deficiency of alpha-L-iduronidase (IDUA), accumulation of glycosaminoglycans (GAGs) and enlargement of lysosomes, correlating with the severity of clinical symptoms. Transcriptome profiling of NSCs revealed differential expression of 429 genes that changed more extensively in the more severe Hurler syndrome subgroup compared to the Hurler-Scheie (median severe) and Scheie (less severe) subgroups. Clustering and pathway analyses demonstrated high concordance of the severity of neurological defects with marked dysregulation of GAG biosynthesis and degradation, lysosomal function and extracellular matrix. Gene Ontology (GO) analysis identified a dramatic upregulation of autophagy pathway, especially in the Hurler syndrome. Thus, GAG accumulation in the patient cells disrupts lysosomal homeostasis affecting multiple related cellular pathways which compensates for IDUA deficiency. These dysregulated process likely lead to enhanced autophagy and more severe disease states. Our studies provide useful tools for clinical biomarker development and potential targets for drug development. SOURCE: Matthew,J,Brooks (brooksma@mail.nih.gov) - NNRL NIH
View on GEOView in PlutoEnhance your research with our curated data sets and powerful platform features. Pluto Bio makes it simple to find and use the data you need.
Learn MoreUse Pluto's intuitive interface to analyze and visualize data for this experiment. Pluto's platform is equipped with an API & SDKs, making it easy to integrate into your internal bioinformatics processes.
Read about post-pipeline analysisView quality control data and experiment metadata for this experiment.
Request imports from GEO or TCGA directly within Pluto Bio.
Chat with our Scientific Insights team