α-SMA	α-smooth muscle actin
BCA	bicinchoninic acid
BSA	bovine serum albumin
butaprost	15-deoxy-16S-hydroxy-17-cyclobutyl PGE1 methyl ester
CD-31	cluster of differentiation 31
DAPI	4’,6-diamidino-2-phenylindole
DMSO	dimethyl sulphoxide
ET-1	endothelin-1
EVG	Van Gieson
H&E	hematoxylin and eosin
HUVECs	human umbilical vein endothelial cells
HPASMCs	human pulmonary arterial smooth muscle cells
IC50	log of concentration causing 50% inhibition
IMax	maximal % inhibition
IPAH	idiopathic pulmonary arterial hypertension
mPAP	mean pulmonary artery pressure
MRE-269	4[(5,6-diphenylpyrazinyl)(1methylethyl) amino]butoxy]acetic acid
MTS	3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt
PAH	pulmonary arterial hypertension
PASMCs	pulmonary arterial smooth muscle cells
PBS	phosphate-buffered saline
PBST	phosphate-buffered saline Tween-20
PFA	paraformaldehyde
pIC50	negative log of concentration causing 50% inhibition
PVRI	pulmonary vascular resistance index
qPCR	quantitative PCR
RT-qPCR	Real-time qPCR
siRNAs	small interfering RNAs
SMBM	smooth muscle basal medium
vWF	von Willebrand Factor