title: Anterior cruciate ligament-derived cells have high chondrogenic potential.
abstract: Anterior cruciate ligament (ACL)-derived cells have a character different from medial collateral ligament (MCL)-derived cells. However, the critical difference between ACL and MCL is still unclear in their healing potential and cellular response. The objective of this study was to investigate the mesenchymal differentiation property of each ligament-derived cell. Both ligament-derived cells differentiated into adipogenic, osteogenic, and chondrogenic lineages. In chondrogenesis, ACL-derived cells had the higher chondrogenic property than MCL-derived cells. The chondrogenic marker genes, Sox9 and alpha1(II) collagen (Col2a1), were induced faster in ACL-derived pellets than in MCL-derived pellets. Sox9 expression preceded the increase of Col2a1 in both pellet-cultured cells. However, the expression level of Sox9 and a ligament/tendon transcription factor Scleraxis did not parallel the increase of Col2a1 expression along with chondrogenic induction. The present study demonstrates that the balance between Sox9 and Scleraxis have an important role in the chondrogenic differentiation of ligament-derived cells.
authors.affiliation: Department of Orthopaedic Surgery, Science of Functional Recovery and Reconstruction, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikatacho, Kitaku, Okayama 700-8558, Japan. matino@md.okayama-u.ac.jp
authors.forename: Takayuki
authors.initials: T
authors.lastname: Furumatsu
authors.forename: Motomi
authors.initials: M
authors.lastname: Hachioji
authors.forename: Kenta
authors.initials: K
authors.lastname: Saiga
authors.forename: Naoki
authors.initials: N
authors.lastname: Takata
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yokoyama
authors.forename: Toshifumi
authors.initials: T
authors.lastname: Ozaki
mesh_terms: D000818:Animals; D016118:Anterior Cruciate Ligament / Q000166:cytology* / Q000378:metabolism; D015415:Biomarkers / Q000378:metabolism; D002454:Cell Differentiation; D019070:Cell Lineage; D002478:Cells, Cultured; D020219:Chondrogenesis; D024043:Collagen Type II / Q000378:metabolism; D017888:Medial Collateral Ligament, Knee / Q000166:cytology / Q000378:metabolism; D008648:Mesoderm / Q000166:cytology; D011817:Rabbits; D055758:SOX9 Transcription Factor / Q000378:metabolism
chemical_list: D015415:Biomarkers; D024043:Collagen Type II; D055758:SOX9 Transcription Factor