Autophagy Mediates Astrogenesis in Adult Hippocampal Neural Stem Cells
- Author:
Shinwon HA
1
;
Seol Hwa JEONG
;
Kyungrim YI
;
Jamie Jeong Min CHU
;
Seolsong KIM
;
Eun Kyoung KIM
;
Seong Woon YU
Author Information
- Publication Type:Original Article
- Keywords: Adult stem cells; Astrocytes; Autophagy; Autophagy-related protein 7; Cell differentiation; Neural stem cells; Sequestosome-1 protein
- MeSH: Adult Stem Cells; Adult; Animals; Astrocytes; Autophagy; Cell Differentiation; Homeostasis; Humans; Neural Stem Cells; Neurogenesis; Neurons; Oligodendroglia; Rats; Suppression, Genetic
- From:Experimental Neurobiology 2019;28(2):229-246
- CountryRepublic of Korea
- Language:English
- Abstract: Neural stem cells (NSCs) have the ability to self-renew and differentiate into neurons, oligodendrocytes, and astrocytes. Highly dynamic nature of NSC differentiation requires the intimate involvement of catabolic processes such as autophagy. Autophagy is a major intracellular degradation pathway necessary for cellular homeostasis and remodeling. Autophagy is important for mammalian development and its role in neurogenesis has recently drawn much attention. However, little is known about how autophagy is associated with differentiation of NSCs into other neural lineages. Here, we report that autophagy plays a critical role in differentiation of adult rat hippocampal neural stem (HCN) cells into astrocytes. During differentiation, autophagy flux peaked at early time points, and remained high. Pharmacological or genetic suppression of autophagy by stable knockdown of Atg7, LC3 or CRISPR-Cas9-mediated knockout (KO) of p62 impaired astrogenesis, while reintroduction of p62 recovered astrogenesis in p62 KO HCN cells. Taken together, our findings suggest that autophagy plays a key role in astrogenesis in adult NSCs.
