Proteomic Characterization of Mouse Cartilage Degradation In Vitro

Abstract

OBJECTIVE: To develop proteomics to analyze mouse cartilage degradation and correlate transcriptional and translational responses to catabolic stimuli. METHODS: Proteomic techniques were used to analyze catabolism in mouse femoral head cartilage. Using specific methods to prepare cartilage extracts and conditioned media for 2-dimensional polyacrylamide gel electrophoresis and subsequent tandem mass spectrometry, we identified novel proteins and fragments released into the media of control, interleukin-1alpha (IL-1alpha)-treated, and all-trans-retinoic acid (RetA)-treated explants. Fluorescence 2-dimensional difference gel electrophoresis was used to quantify protein expression changes. We al..