The intricate mechanism of PLS3 in bone homeostasis and disease

Front Endocrinol (Lausanne). 2023 Jul 7:14:1168306. doi: 10.3389/fendo.2023.1168306. eCollection 2023.

Abstract

Since our discovery in 2013 that genetic defects in PLS3 lead to bone fragility, the mechanistic details of this process have remained obscure. It has been established that PLS3 variants cause syndromic and nonsyndromic osteoporosis as well as osteoarthritis. PLS3 codes for an actin-bundling protein with a broad pattern of expression. As such, it is puzzling how PLS3 specifically leads to bone-related disease presentation. Our review aims to summarize the current state of knowledge regarding the function of PLS3 in the predominant cell types in the bone tissue, the osteocytes, osteoblasts and osteoclasts. This is related to the role of PLS3 in regulating mechanotransduction, calcium regulation, vesicle trafficking, cell differentiation and mineralization as part of the complex bone pathology presented by PLS3 defects. Considering the consequences of PLS3 defects on multiple aspects of bone tissue metabolism, our review motivates the study of its mechanism in bone diseases which can potentially help in the design of suitable therapy.

Keywords: PLS3; bone cells; bone diseases; calcium regulation; mechanotransduction; osteogenesis.

Publication types

  • Review
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bone and Bones / pathology
  • Homeostasis
  • Humans
  • Mechanotransduction, Cellular*
  • Mutation
  • Osteoporosis* / pathology

Grants and funding

The work of WZ is funded by the Guangzhou Elites Scholarship Council PhD scholarship. The work of LZ is supported by the Estonian Research Council, grant PUTJD1009.