α-SMA	alpha-smooth muscle actin
ECM	extracellular matrix
EVs	extracellular vesicles
FBS	fetal bovine serum
HE	hematoxylin and eosin
HRP	horse radish peroxidase
Hsp90	heat shock protein 90
Hsp90b1	heat shock protein 90 beta family member 1
HucMSCs	human umbilical cord mesenchymal stem cells
HucMSC-EVs	human umbilical cord mesenchymal stem cell-derived extracellular vesicles
MSCs	mesenchymal stem cells
MSC-EVs	mesenchymal stem cell-derived extracellular vesicles
MiRNA	microRNA
MRC-5-EVs	human embryonic lung fibroblast-derived extracellular vesicles
Mut	mutant
NIH/3T3 cell	murine fibroblast cell line
NTA	Nanoparticle Tracking Analysis
qRT-PCR	quantitative real-time polymerase chain reaction
SiRNAs	small interfering RNAs
TEM	Transmission Electron Microscope
TGF-β1	transforming growth factor-β1
Wt	wild-type
3D	three-dimensional
3′ UTR	3′ untranslated region