A method is disclosed for altering the redox equilibrium of a transmembrane receptor-like protein tyrosine phosphatase (RPTP), particularly a type Ila RPTP, by chemically modulating the activity through contact of such an enzyme with a diaryl boron compound that preferentially reacts with an RPTP in an oxidized state (CyS-OH). This redox modulation is most readily observed and put to use by assaying the inhibition of the phosphatase activity of the RPTP. Such an assay can be carried out on an enzyme in vitro or by contacting the enzyme in a living organism (in vivo). A useful diaryl boron compound corresponds in structure to Formula I in which Ar-1, [Formula should be inserted here] Ar-2, R1, R2, R3 and R4 are defined within. A pharmaceutical composition containing a useful diaryl boron compound is also disclosed, as are particularly preferred diaryl boron compounds.
本发明公开了一种通过
化学调节活性来改变跨膜受体样蛋白
酪氨酸磷酸酶(R
PTP),特别是Ila型R
PTP的氧化还原平衡的方法,该方法通过使该酶与优先与氧化态R
PTP(CyS-OH)反应的双芳基
硼化合物接触来实现。这种氧化还原调节最易于通过检测R
PTP
磷酸酶活性的抑制来观察和应用。这种检测可以在体外对酶进行,或者通过在活体
生物(体内)中
接触酶来进行。有用的双芳基
硼化合物的结构对应于公式I,其中Ar-1、Ar-2、R1、R2、R3和R4在内部定义。还公开了含有有用双芳基
硼化合物的药物组合物,以及特别优选的双芳基
硼化合物。