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RSS FeedsIJMS, Vol. 23, Pages 5820: Neurogenesis Is Increased in Human Neural Stem Cells by Aβ40 Peptide (International Journal of Molecular Sciences)


22 may 2022 15:30:40

IJMS, Vol. 23, Pages 5820: Neurogenesis Is Increased in Human Neural Stem Cells by Aβ40 Peptide (International Journal of Molecular Sciences)

Amyloid-β 40 peptides [Aβ1-40 (Aβ40)] are present within amyloid plaques in the brains of patients with Alzheimer’s disease (AD). Even though Aβ peptides are considered neurotoxic, they can mediate many biological processes, both in adult brains and throughout brain development. However, the physiological function of these Aβ peptides remains poorly understood, and the existing data are sometimes controversial. Here, we analyze and compare the effects of monomeric Aβ40 on the biology of differentiating human neural stem cells (human NSCs). For that purpose, we used a model of human NSCs called hNS1. Our data demonstrated that Aβ40 at high concentrations provokes apoptotic cellular death and the damage of DNA in human NSCs while also increasing the proliferation and favors neurogenesis by raising the percentage of proliferating neuronal precursors. These effects can be mediated, at least in part, by β-catenin. These results provide evidence of how Aβ modulate/regulate human NSC proliferation and differentiation, suggesting Aβ40 may be a pro-neurogenic factor. Our data could contribute to a better understanding of the molecular mechanisms involved in AD pathology and to the development of human NSC-based therapies for AD treatment, since these results could then be used in diagnosing the disease at early stages and be applied to the development of new treatment options.

87 viewsCategory: Biochemistry, Biophysics, Molecular Biology
IJMS, Vol. 23, Pages 5818: Quantitative Analysis of the Transcriptome of Two Commonly Used Human Monocytic Cell Lines—THP-1 and Mono Mac 6—Reveals Their Arrest during Early Monocyte/Neutrophil Differentiation (International Journal of Molecular Sciences)
IJMS, Vol. 23, Pages 5821: Lifestyles Shape the Cytochrome P450 Repertoire of the Bacterial Phylum Proteobacteria (International Journal of Molecular Sciences)
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