The high mobility group transcription factor Sox8 is a negative regulator of osteoblast differentiation.
Schmidt K, Schinke T, Haberland M, Priemel M, Schilling AF, Mueldner C, Rueger JM, Sock E, Wegner M, Amling M. J Cell Biol. 2005 Mar 14; 168(6):899-910. Epub 2005 Mar 7.