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Osteoclast stimulation factor 1 (Ostf1) KNOCKOUT increases trabecular bone mass in mice

Research output: Contribution to journalJournal article

  • Matthieu Vermeren
  • Rodanthi Lyraki
  • Sachin Wani
  • Rannar Airik
  • Omar Albagha
  • Richard Mort
  • Friedhelm Hildebrandt
  • Toby Hurd
<mark>Journal publication date</mark>12/2017
<mark>Journal</mark>Mammalian genome : official journal of the International Mammalian Genome Society
Issue number11-12
Number of pages17
Pages (from-to)498-514
Publication statusPublished
Early online date21/09/17
Original languageEnglish


Osteoclast stimulation factor 1 (OSTF1) is an SH3-domain containing protein that was initially identified as a factor involved in the indirect activation of osteoclasts. It has been linked to spinal muscular atrophy in humans through its interaction with SMN1, and is one of six genes deleted in a human developmental microdeletion syndrome. To investigate the function of OSTF1, we generated an Ostf1 knockout mouse model, with exons 3 and 4 of Ostf1 replaced by a LacZ orf. Extensive X-Gal staining was performed to examine the developmental and adult expression pattern, followed by phenotyping. We show widespread expression of the gene in the vasculature of most organs and in a number of cell types in adult and embryonic mouse tissues. Furthermore, whilst SHIRPA testing revealed no behavioural defects, we demonstrate increased trabecular mass in the long bones, confirming a role for OSTF1 in bone development.