PMID- 32265636 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 1662-4548 (Print) IS - 1662-453X (Electronic) IS - 1662-453X (Linking) VI - 14 DP - 2020 TI - Erosion of Gene Co-expression Networks Reveal Deregulation of Immune System Processes in Late-Onset Alzheimer's Disease. PG - 228 LID - 10.3389/fnins.2020.00228 [doi] LID - 228 AB - We have applied a novel and integrative analysis framework for next-generation sequencing (NGS) data to 503 human subjects provided by the Religious Orders Study and Memory and Aging Project (ROSMAP) to examine changes in transcriptomic organization and common variants in association with late-onset Alzheimer's disease (LOAD). Our framework identified seven reproducible, co-regulated modules after quality control (QC), clinical segregation, preservation filtering, and functional ontology analysis. These modules were specifically enriched in several innate and adaptive immune system processes, the synaptic vesicle cycle, and Hippo signaling. Topological and functional erosion of these modules due to shedding of genes and loss of in-module connectivity was diagnostic of disease progression. Perturbation analysis revealed that only 1% of eQTLs overlapped genes participating in these co-regulated modules. Common variants nevertheless identified components of the immune systems like human leukocyte antigen (HLA) complex and microtubule-associated protein tau (MAPT) regions in association with LOAD. Our results implicate microglial function, adaptive immune response, and the structural degeneration of neurons as contributors to the transcriptional deregulation observed along with common genetic variants in the progression of LOAD. CI - Copyright (c) 2020 Malamon and Kriete. FAU - Malamon, John Stephen AU - Malamon JS AD - Bossone Research Center, School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, United States. FAU - Kriete, Andres AU - Kriete A AD - Bossone Research Center, School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, United States. LA - eng PT - Journal Article DEP - 20200320 PL - Switzerland TA - Front Neurosci JT - Frontiers in neuroscience JID - 101478481 PMC - PMC7099620 OTO - NOTNLM OT - Alzheimer's OT - WGCNA OT - eQTL OT - functional OT - immune system OT - networks OT - synapses EDAT- 2020/04/09 06:00 MHDA- 2020/04/09 06:01 PMCR- 2020/01/01 CRDT- 2020/04/09 06:00 PHST- 2019/09/06 00:00 [received] PHST- 2020/03/02 00:00 [accepted] PHST- 2020/04/09 06:00 [entrez] PHST- 2020/04/09 06:00 [pubmed] PHST- 2020/04/09 06:01 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fnins.2020.00228 [doi] PST - epublish SO - Front Neurosci. 2020 Mar 20;14:228. doi: 10.3389/fnins.2020.00228. eCollection 2020.