Aberrant upregulation of CaSR promotes pathological new bone formation in ankylosing spondylitis.

ABSTRACT: Pathological new bone formation is a typical pathological feature in ankylosing spondylitis (AS), and the underlying molecular mechanism remains elusive. Previous studies have shown that the calcium-sensing receptor (CaSR) is critical for osteogenic differentiation while also being highly involved in many inflammatory diseases. However, whether it plays a role in pathological new bone formation of AS has not been reported. Here, we report the first piece of evidence that expression of CaSR is aberrantly upregulated in entheseal tissues collected from AS patients and animal models with different hypothetical types of pathogenesis. Systemic inhibition of CaSR reduced the incidence of pathological new bone formation and the severity of the ankylosing phenotype in animal models. Activation of

SUBMITTER: Li X 

PROVIDER: S-EPMC7721361 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature