1-MT	1-methyl-dl-tryptophan
ALF	acute liver failure
ALI	acute lung injury
AT-MSCs	adipose tissue-derived MSCs
bFGF	basic fibroblast growth factor
BSCB	blood-spinal cord barrier
HSP	heat-shock proteins
BDNF	brain-derived neurotrophic factor
CSCs	cardiac stem cells
Cav-1	caveolin-1
COPD	chronic obstructive pulmonary diseases
CD	Crohn’s disease
CMV	cytomegalovirus
CTLs	cytotoxic T lymphocytes
DSS	dextran sodium sulphate
DED	dry eye disease
ECs	endothelial cells
EGF	epidermal growth factor
EGFR	epidermal growth factor receptor
Exos	exosomes
EAU	experimental autoimmune uveitis
EVs	extracellular vesicles
Fap-1	Fas-associated phosphatase-1
FGF-6	fibroblast growth factor 6
GCN2	general control nonderepressible 2
GDNF	glial cell line-derived neurotrophic factor
GSH	glutathione
GAGs	glycosaminoglycans
GRO	growth related oncogene
HGF	hepatic growth factor
HSCs	hepatic stellate cells
HSV	herpes simplex virus
hAT-MSC-CM	human adipose tissue MSC-derived conditioned medium
hUTC-MSC-CM	human uterine cervical MSC-derived conditioned medium
HIF-1α	hypoxia-inducible factor 1 alpha
IPF	idiopathic pulmonary fibrosis
IL-1Ra	IL-1 receptor antagonist
IDO	indolamine 2-3-dioxygenase
iNOS	inducible nitric oxide synthase
IBDs	inflammatory bowel diseases
KGF	keratinocyte growth factor
KYN	kynurenine
MMIF	macrophage migration inhibitory factor
MHC	major histocompatibility complex
MDA	malondialdehyde
mTOR	mammalian target of rapamycin
MMP	matrix metalloproteinase
MSCs	mesenchymal stem cells
MCP-1	monocyte chemotactic protein-1
MSC-CM	MSC-derived conditioned medium
MTF	MSC-derived trophic factors
MPO	Myeloperoxidase
NSF	N-ethylmaleimide-sensitive factor
NK	natural killer
NKT	natural killer T
NGF	nerve growth factor
nSMase2	neutral sphingomyelinase 2
NO	nitric oxide
NF-κB	nuclear factor κB
OA	osteoarthritis
OVA	ovalbumin
PB-MNCs	peripheral blood mononuclear cells
PTEN	phosphatase and tensin homolog
PGF	placental growth factor
PDGF	platelet-derived growth factor
PGE2	prostaglandin E2
RhoA	Ras homolog gene family member A
RGCs	retinal ganglion cells
S1P	sphingosine 1-phosphate
SCI	spinal cord injury
SOD	superoxide dismutase
TSP1	thrombospondin 1
TIMP-1	tissue inhibitors of metalloproteinase
TGF-β	transforming growth factor-β
Tregs	T regulatory cells
TNFSF14	tumor necrosis factor superfamily member 14
UC	ulcerative colitis
VEGF	vascular endothelial growth factor