ACPA	Anti-citrullinated protein antibodies
COL2	Collagen type II
ECM	Extracellular matrix
EDTA	Ethylenediaminetetraacetic acid
ELISA	Enzyme-linked immunosorbent assay
FBS	Fetal bovine serum
FITC	Fluorescein isothiocyanate
HRP	Horseradish peroxidase
Ig	Immunoglobulin
IL	Interleukin
MMP	Matrix metalloproteinase
OA	Osteoarthritis
PAD	Peptidyl arginine deiminase
PBS	Phosphate-buffered saline
PTM	Post-translational modification
RA	Rheumatoid arthritis
RANKL	Receptor Activator of Nuclear Factor-κB Ligand
RT	Room temperature
SDS-PAGE	Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis
TNF-α	Tumor necrosis factor alpha