Table 4 Bone-derived factors in the reproductive system

From: Bone-derived factors mediate crosstalk between skeletal and extra-skeletal organs

Protein

Cell Type

Receptor

Model

Function

Ref.

Ocn

Leydig cells of the testes gland

Gprc6a

Gprc6a−/− mice

Modulate the expression of enzymes necessary for testosterone synthesis in a manner dependent on Creb, thereby enhancing the survival of germ cells.

111

Leydig cells

Gprc6a

Ocn–/– and Gprc6a–/– male mice

Promote testosterone biosynthesis in the mouse testis

281

Fgf23

Oocytes

Fgfr1

Mice 18.5 days postcoitum to 1 day postpartum

Mitigate oocyte apoptosis in the perinatal murine ovary through the activation of the p38 MAPK signaling cascade.

221

Opn

Cumulus cells and oocytes

Integrins and CD44

In vitro experiments

Enhance cumulus cell expansion and oocyte fertilization

225,226

  1. Ocn osteocalcin, Gprc6a G protein-coupled receptor, family C, group 6, Fgf23 fibroblast growth factor 23, Opn osteopontin