Keyword: Cell biology and genetics
More than 4 million Canadians have arthritis and the number of people living with arthritis continues to increase year after year. Osteoarthritis involves multiple tissues and often includes cartilage damage, bone sclerosis and synovial inflammation. A pressing need remains for joint localized therapies and interventions that could slow or ideally stop this debilitating disease.
In our research, we use genetic and surgical models of spontaneous osteoarthritis (with old age) and post-traumatic osteoarthritis (following injury). We follow the progression of disease in a joint in order to better understand how proteins such as TRPV4, integrin alpha1beta1 and cilia influence chondrocyte signal transduction and thus the development of osteoarthritis.
Research in the Crease lab uses freshwater crustaceans in the genus Daphnia as a model organism to study evolution of the ribosomal (r)DNA multigene family, and of the DNA transposon, Pokey, which inserts in a specific region of the Daphnia rDNA repeat as well as other genomic locations. Current projects involve comparing rates of evolution in ribosomal proteins that bind to conserved and variable regions of rRNA genes, determining the impact of breeding system (cyclic or obligate parthenogenesis) on the evolution of rDNA and Pokey transposons, determining the relationship between rDNA copy number and Pokey distribution, and measuring rates of Pokey transposition inside and outside of rDNA.Learn More