ALS	amyotrophic lateral sclerosis
AD-MSCs	adipose-derived MSCs
BDNF	brain-derived neurotrophic factor
bFGF	basal fibroblast growth factor
BM-MSCs	bone marrow-derived MSCs
BMP	bone morphogenic proteins
CNS	central nervous system
CNTF	ciliary neurotrophic factor
ECM	extracellular matrix
EGF	epidermal growth factor
EVs	extracellular vesicles
ESCs	embryonic stem cells
GDNF	glial cell-derived neurotrophic factor
IGF	insulin-like growth factor
IL	interleukin
iPSCs	induced pluripotent stem cells
ISCT	International Society for Cell and Gene Therapy
LIF	leukaemia inhibitory factor
MSCs	mesenchymal stem/stromal/singaling cells
NGF	nerve growth factor
NPCs	neural progenitor cells
NSCs	neural stem cells
qNSCs	quiescent NSCs
PDGF	platelet-derived growth factor
SCI	spinal cord injury
SDF-1	stromal cell-derived factor 1
SGZ	subbgranular zone
Shh	Sonic hedgehog
SVZ	subventricular zone
TACs	transit-amplifying cells
TNF	tumour necrosis factor
UC-MSCs	umbilical cord-derived MSCs
UCB-MSCs	umbilical cord blood-derived MSCs
VEGF	vascular endothelial growth factor
WJ-MSCs	Wharton jelly-derived MSCs