MSC-Exos increased chondrogenic genes Col2a1 (type II collagen alpha 1) and aggrecan, decreased hondrocyte hypertrophy markers MMP-13 (matrix metalloproteinase-13) and Runx2 (runt-related transcription factor 2) in chondrocytes isolated from OA model mice.
We review the increasing evidence implicating COL2A1 mutations in individuals presenting with isolated degenerative joint disease, aiming to alert physicians who assess these patients to this possibility.
Long-term Prg4 expression under the type II collagen promoter (Col2a1) does not adversely affect skeletal development but protects from developing signs of age-relatedOA.
Using the procedure developed for analysis of the COL2A1 gene, mutations were detected in > 20% of patients with chondrodysplasias and up to 2% of patients with early-onset familial OA.
We demonstrated no evidence of linkage between the COL2A1/VDR locus and nonsyndromic DDH (LOD score < -2), suggesting, although variants in these genes could play a role in osteoarthritis in patients with DDH, they do not contribute to nonsyndromic DDH.
To investigate the relationships between two COL2A1 single nucleotide polymorphisms (SNPs; T2088C and G4006A) and osteoarthritis (OA) in Han Chinese women.
We analyzed the COL2A1 gene in a 27-year-old woman and her 47-year-old mother presenting with severe premature osteoarthrosis and X-ray signs compatible with mild spondyloepiphyseal dysplasia.
Despite studies suggesting associations of OA with both COL2A1 and VDR loci, our results suggest that mutations at the COL2A1/VDR locus do not play an important role as a cause of common OA in the population at large.
The cartilage collagen genes, COL2A1, COL9A1, COL9A2, COL9A3, COL11A1 and COL11A2, were screened for sequence variations in 72 Finnish probands and one US family with primary early-onset hip and/or knee OA.
When we analysed OA development in Col2a1-Cre;Runx1<sup>fl/fl</sup> and Runx1<sup>fl/fl</sup> mice by surgically inducing joint instability, Cartilage degradation and osteophyte formation of Col2a1-Cre;Runx1<sup>fl/fl</sup> joints was accelerated compared with joints in Runx1<sup>fl/fl</sup> animals 8 weeks after surgery.
Insulin-like growth factor I gene promoter polymorphism, collagen type II alpha1 (COL2A1) gene, and the prevalence of radiographic osteoarthritis: the Rotterdam Study.
Follow-up with whole-exome sequencing analysis revealed a mutation c.2032G>A (p.Gly678Arg) in the COL2A1 gene (NCBI Reference Sequence: NM_001844.4), which co-segregated with the disease phenotype in this family, manifested by severe hip dysplasia and osteoarthritis.
The same allele shows reduced expression in all three patients, and this allele is more frequent in a well-defined OA population than in a control group, suggesting the possible existence of a rare COL2A1 allele that predisposes to OA.