What Are the Molecular Mechanisms by Which Functional Bacterial Amyloids Influence Amyloid Beta Deposition and Neuroinflammation in Neurodegenerative Disorders?
Robert P. Friedland, Joseph D. McMillan, Zimple Kurlawala
Abstract
Despite the enormous literature documenting the importance of amyloid beta (Ab) protein in Alzheimer's disease, we do not know how Ab aggregation is initiated and why it has its unique distribution in the brain. In vivo and in vitro evidence has been developed to suggest that functional microbial amyloid proteins produced in the gut may cross-seed Ab aggregation and prime the innate immune system to have an enhanced and pathogenic response to neuronal amyloids. In this commentary, we summarize the molecular mechanisms by which the microbiota may initiate and sustain the pathogenic processes of neurodegeneration in aging.
Topics & Concepts
NeuroinflammationAmyloid (mycology)NeurodegenerationInnate immune systemAmyloid betaNeuroscienceBiologyProtein aggregationBiochemistry of Alzheimer's diseaseAlzheimer's diseaseImmune systemDiseaseAmyloid precursor proteinImmunologyCell biologyInflammationBiochemistryMedicinePeptidePathologyBotanyAlzheimer's disease research and treatmentsGut microbiota and healthTryptophan and brain disorders