2D	Two-dimensional
3D	Three-dimensional
BC	Breast cancer
BSA	Bovine serum albumin
CD44t	Total CD44 isoform
CEMIP	Cell migration-inducing hyaluronidase
DAPI	4′,6-diamidino-2-phenylindole
DMEM	Dulbecco’s Modified Eagle Medium
ECM	Extracellular matrix
EMT	Epithelial-to-mesenchymal transition
GAG	Glycosaminoglycan
GlcA	D-glucuronic acid
GlcNAc	N-acetyl-D-glucosamine
HA	Hyaluronan/hyaluronic acid
HAS1/2/3	Hyaluronan synthase 1, 2, 3
HAS2-AS1	HAS2 antisense RNA 1
HMW	High-molecular-weight
LMW	Low-molecular-weight
MMP	Matrix metalloproteinase
MMP-14	Matrix metalloproteinase 14
PBS	Phosphate-buffered saline
PFA	Paraformaldehyde
PI3K	Phosphoinositide 3-kinase
PG	Proteoglycan
RHAMM	Receptor for hyaluronan-mediated motility
SEM	Scanning electron microscopy
sHA	Sulfated hyaluronan
SNAI2	Snail family transcriptional repressor 2 (Slug)
TMEM2	Transmembrane protein 2 (hyaluronidase)
TME	Tumor microenvironment
TNBC	Triple-negative breast cancer
TPM	Transcripts per million