In:
Nanoscience and Nanotechnology Letters, American Scientific Publishers, Vol. 11, No. 5 ( 2019-05-01), p. 696-703
Abstract:
Amyloid-peptides (A β ), which can aggregate oligomers or fibrils into neurons, play a critical role in Alzheimer's disease (AD). Calpain 1 (CAPN1) is one of the Ca 2+ regulated proteases, involved in cell death, apoptosis, and motility. As an important signal transduction
pathway, it has been reported to be closely related to muscle atrophy, myoblast fusion, diabetes mellitus, and neurode-generative diseases, including Alzheimer's disease. Our previous study investigated the effect of CAPN1 RNAi on neurotoxicity and apoptosis in primary neurons induced by A β 25-35.
The primary neurons were cultured and separated into different groups pretreated with A β 25-35 (10 μ M). Three groups were treated with CAPN1 shRNA, while one group was not. Along with CAPN1 shRNA, P25 (2 μ g/mL) and rapamycin (20 ng/mL) were added to the culture.
The results showed that CAPN1 RNAi enhanced the formation of autophagosomes in cells, as observed by confocal microscopy. Parallelly, CAPN1 RNAi enhanced the cell viability, as observed by Cell Counting Kit-8 (CCK8) assay, and decreased the apoptotic rate, as observed by flow cytometry. In addition, CAPN1 RNAi decreased the mRNA level of CAPN1 and downregulated the expression levels of CDK5, GSK3 β , and p-tau in primary neurons induced by A β 25-35. All these results indicated the effect of CAPN1 RNAi against A β -induced neurotoxicity. Our results
suggested that CAPN1 RNAi exhibits a neuroprotective effect on the treatment of AD and provided a pharmacological basis for its clinical treatment.
Type of Medium:
Online Resource
ISSN:
1941-4900
DOI:
10.1166/nnl.2019.2928
Language:
English
Publisher:
American Scientific Publishers
Publication Date:
2019
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