Towards a better understanding of the neuro-developmental role of autophagy in sickness and in health

Authors:

Juan Zapata-Muñoz1, Beatriz Villarejo-Zori1, Pablo Largo-Barrientos2 and Patricia Boya1

Affiliations:

1 Centro de Investigaciones Biológicas Margarita Salas, CSIC, Madrid, Spain.

2 Universiteit van Amsterdam, Amsterdam, The Netherlands.

Keywords: 

neurodevelopment, developmental disorders, neuronal autophagy, autism spectrum disorder, neurogenesis.

Abbreviatons:

AMPK – AMP activated protein kinase;

ASD – autism spectrum disorder;

ATG – autophagy-related;

BPAN – β-propeller protein-associated neurodegeneration;

CMA – chaperone-mediated autophagy;

CNS – central nervous system;

ER – endoplasmic reticulum;

FXS – Fragile X syndrome; HSP – hereditary spastic paraplegia;

ID – intellectual disability;

IM – isolation membrane;

KO – knockout;

LAMP2 – lysosome-associated membrane protein 2;

LC – light chain;

LDD – Lhermitte-Duclos disease;

mTOR – mechanistic target of rapamycin;

mTORC – mTOR complex;

NSC – neuronal stem cell;

PI3K – phoshatidylinositol 3- kinase;

PI3P – phosphatidylinositol 3-phosphate;

POMC – proopiomelanocortin;

TSC – tuberous sclerosis complex;

ULK1 – UNC51-like kinase 1.

Corresponding Author(s):

Patricia Boya, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Madrid, Spain; patricia.boya@csic.es

Conflict of interest statement:

The author’s declare no conflict of interest.

Please cite this article as:

Juan Zapata-Muñoz, Beatriz Villarejo-Zori, Pablo Largo-Barrientos and Patricia Boya (2021). Towards a better understand-ing of the neurodevelopmental role of autophagy in sickness and in health. Cell Stress 5(7): 99-118. doi: 10.15698/cst2021.07.253

© 2021 Zapata-Muñoz et al. This is an open-access article released under the terms of the Creative Commons Attribution (CC BY) license, which allows the unrestricted use, distribution, and re-production in any medium, provided the original author and source are acknowledged.

Abstract:

Autophagy is a critical cellular process by which biomolecules and cellular organelles are degraded in an orderly manner inside lysosomes. This process is particularly important in neurons: these post-mitotic cells cannot divide or be easily replaced and are therefore especially sensitive to the accumulation of toxic proteins and damaged organelles. Dysregulation of neuronal autophagy is well documented in a range of neurodegenerative diseases. However, growing evidence indicates that autophagy also critically contributes to neurodevelopmental cellular processes, including neurogenesis, maintenance of neural stem cell homeostasis, differentiation, metabolic reprogramming, and synaptic remodelling. These findings implicate autophagy in neurodevelopmental disorders. In this review we discuss the current understanding of the role of autophagy in neurodevelopment and neurodevelopmental disorders, as well as currently available tools and techniques that can be used to further investigate this association.