Description | - Dataset with samples from Individuals with Congenital defects of phagocyte number, functions, or both: 1- Congenital neutropenia, P14/LAMTOR2 deficiency, Phenotype OMIM number 610798. see PID classification: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4659841/ see publication: https://www.ncbi.nlm.nih.gov/pubmed/24092934 |
Purpose | Lysosome-related organelles have versatile functions including protein and lipid degradation, signal transduction, and protein secretion. The molecular elucidation of rare congenital diseases affecting endosomal/lysosomal biogenesis has given insights into physiological functions of the innate and adaptive immune system.. Here, we describe a novel human primary immunodeficiency disorder and provide evidence that the endosomal adaptor protein p14, previously characterized as confining mitogen-activated-protein-kinase (MAPK) signaling to late endosomes, is critical for the function of neutrophils, B-cells, cytotoxic T-cells and melanocytes. Combining genetic linkage studies and transcriptional profiling analysis, we identified a homozygous point mutation in the 3’ UTR of p14 (also known as MAPBPIP), resulting in decreased protein expression. In p14-deficient cells, the distribution of late endosomes was severely perturbed, suggesting a novel role for p14 in endosomal biogenesis. These findings have implications for understanding endosomal membrane dynamics, compartmentalization of cell signal cascades, and their role in immunity. Keywords: Interindividual comparison. |
Experimental Design | EBV-transformed B cell lines from 2 parents and 2 affected children |
Platform | Affymetrix HG-U133A |
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sampleset4000028_sampleannotations_Group.csv
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