2013
MMP13 is a critical target gene during the progression of osteoarthritis
Wang M, Sampson ER, Jin H, Li J, Ke QH, Im HJ, Chen D. MMP13 is a critical target gene during the progression of osteoarthritis. Arthritis Research & Therapy 2013, 15: r5. PMID: 23298463, PMCID: PMC3672752, DOI: 10.1186/ar4133.Peer-Reviewed Original ResearchConceptsMeniscal-ligamentous injuryOA progressionControl miceMMP13 activityType II collagenTUNEL stainingCre-negative control miceChondrocyte apoptosisEffective disease-modifying treatmentTerminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) stainingTransferase dUTP nick end labeling stainingDUTP nick end labeling stainingRole of MMP13Nick end labeling stainingArticular cartilage lossCartilage gradingDisease-modifying treatmentsProgression of osteoarthritisWild-type miceDegenerative joint diseaseDevelopment of OAResults of immunohistochemistryEnd labeling stainingCre-negative miceArticular cartilage degeneration
2012
Conditional activation of β‐catenin signaling in mice leads to severe defects in intervertebral disc tissue
Wang M, Tang D, Shu B, Wang B, Jin H, Hao S, Dresser KA, Shen J, Im H, Sampson ER, Rubery PT, Zuscik MJ, Schwarz EM, O'Keefe RJ, Wang Y, Chen D. Conditional activation of β‐catenin signaling in mice leads to severe defects in intervertebral disc tissue. Arthritis & Rheumatism 2012, 64: 2611-2623. PMID: 22422036, PMCID: PMC3632450, DOI: 10.1002/art.34469.Peer-Reviewed Original ResearchConceptsDisc degenerationΒ-cateninDisc tissueExtensive osteophyte formationLow back painDisc tissue samplesIntervertebral disc degenerationPolymerase chain reaction assaysTissue functionBack painReal-time polymerase chain reaction assaysRunt-related transcription factorΒ-catenin protein levelsChain reaction assaysIntervertebral disc tissueOsteophyte formationΒ-catenin levelsImmunohistochemical analysisNormal subjectsMatrix metalloproteinase-13 inhibitorsTransgenic miceHistologic analysisΒ-catenin proteinADAMTS5 expressionGenetic ablation