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Microglia play a pivotal role in the maintenance of brain homeostasis but lose homeostatic function during neurodegenerative disorders. We identified a specific apolipoprotein E (APOE)-dependent molecular signature in microglia from models of amyotrophic lateral sclerosis (ALS), multiple sclerosis (MS), and Alzheimer’s disease (AD) and in microglia surrounding neuritic β-amyloid (Aβ)-plaques in the...
Mutations in MECP2, encoding the epigenetic regulator methyl-CpG-binding protein 2, are the predominant cause of Rett syndrome, a disease characterized by both neurological symptoms and systemic abnormalities. Microglial dysfunction is thought to contribute to disease pathogenesis, and here we found microglia become activated and subsequently lost with disease progression in Mecp2-null mice. Mecp2...
TRAF3 was found as a protein that binds to the cytoplasmic tail of CD40 but is part of a family of proteins with common structureand activity. To clarify the phsycological roles of TRAF3, we introduced a TRAF3 null mutation in mice through homologous recombination. TRAF3-deficient mice appear normal at birth but become progressively runted, correlating with progressive hypoglycemia and depletion of...
Roles of the κ intronic enhancer (iEκ) and its asssociated matrix attachment region (MAR) during B cell development were examined using mutant embryonic stem (ES) cell lines in which the entire region on both chromosomes was replaced with either a recombined LoxP site (EκND) or the PGK-neomycin resistance (PGK-neo r ) gene (EκNI). B cells derived from EκND ES cells had greatly impaired VκJκ...
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