A method for screening a compound acting on a bone or its salt characterized by using NRH: quinone oxidoreductase (NQO2), its peptide fragment or a salt thereof; agents acting on a bone comprising compounds obtained by the above method; a method of preventing/treating human or mammalian bone diseases involving the inhibition or promotion of the expression or activity of NQO2; and diagnostics for bone diseases containing a polynucleotide encoding NQO2 or its peptide fragment or an antibody having an affinity specifically for NQO2, its peptide fragment or a salt thereof.
A method for screening a compound acting on a bone or its salt characterized by using NRH: quinone oxidoreductase (NQO2), its peptide fragment or a salt thereof; agents acting on a bone comprising compounds obtained by the above method; a method of preventing/treating human or mammalian bone diseases involving the inhibition or promotion of the expression or activity of NQO2; and diagnostics for bone diseases containing a polynucleotide encoding NQO2 or its peptide fragment or an antibody having an affinity specifically for NQO2, its peptide fragment or a salt thereof.