[Expression of protein phosphatase 2AC in the brain of mice and Alzheimer's patients].
2018
Objective: To investigate the biological functions of protein phosphatase 2AC(PP2AC) in the brain, and to detect its spatio-temporal expression and its involvement in neurological disorders in the brains of mice and Alzheimer's patients. Methods: Western blot was used to evaluate the expression level of PP2AC in different organs. Immunohistochemical staining was performed to detect the in situ expression levels of PP2AC in the brains of mice and patients, and the pathological changes were confirmed in the brains of patients with Alzheimer's disease. Results: Among all the tested organs in adult mouse, the expression of PP2AC protein was the highest in the brain. From embryonic day 18.5 to postnatal 2-year-old mice, PP2AC exhibited spatio-temporal specific expression in the brains. Furthermore, an age-dependent increased expression in the cerebral cortex at both protein and RNA levels was observed. Compared to control group, PP2AC protein expression was lower in the frontal cortex of Alzheimer's patients. Conclusions: The spatio-temporal specific expression profiles of PP2AC in mouse brain implicate its biological significance. Its diminished expression in the frontal cortex of Alzheimer's disease patients implies that PP2AC plays a potential role in the pathogenesis of Alzheimer's disease.
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