Substituted naphthalenediones in accord with structural diagram (I): compositions thereof and methods for the use thereof, for the treatment of T cell mediated conditions such as autoimmune diseases and organ graft rejection. In compounds of the invention, wherein: Q
1
at each occurrence is independently selected from hydrogen, hydroxy, halogen, C(O)O(C
1
-C
3
) alkyl and C(O)phenyl, and Q
2
is selected from hydrogen, halogen, O—(C
1
-C
3
)alkyl, O—(C
1
-C
3
)alkenyl, phenyl, indolyl and naphthyl, where phenyl may be mono- or di-substituted with NO
2
or halogen, and indolyl may be substituted with (C
1
-C
3
)alkyl or phenyl.
Potent Reversible Inhibitors of the Protein Tyrosine Phosphatase CD45
作者:Rebecca A. Urbanek、Suzanne J. Suchard、Gary B. Steelman、Katharine S. Knappenberger、Linda A. Sygowski、Chris A. Veale、Marc J. Chapdelaine
DOI:10.1021/jm000447i
日期:2001.5.1
The cytosolic portion of CD45, a major transmembrane glycoprotein found on nucleated hematopoietic cells, contains protein tyrosine phosphatase activity and is critical for T-cell receptor-mediated T-cell activation. CD45 inhibitors could have utility in the treatment of autoimmune disorders and organ graft rejection. A number of 9, l0-phenanthrenediones were identified that reversibly inhibited CD45-mediated p-nitrophenyl phosphate (pNPP) hydrolysis. Chemistry efforts around the 9,10-phenanthrenedione core led to the most potent inhibitors known to date. In a functional assay, the compounds were also potent inhibitors of T-cell receptor-mediated proliferation, with activities in the low micromolar range paralleling their enzyme inhibition. It was also discovered that the nature of modification to the phenanthrenedione pharmacophore could affect selectivity for CD45 over PTP1B (protein tyrosine phosphatase 1B) or vice versa.
NAPHTHOQUINONE DERIVATIVES AS CD45 INHIBITORS
申请人:AstraZeneca AB
公开号:EP1259231A2
公开(公告)日:2002-11-27
METHOD TO INHIBIT ENDOTHELIAL-TO-MESENCHYMAL TRANSITION
申请人:THE CHILDREN'S MEDICAL CENTER CORPORATION
公开号:US20180311356A1
公开(公告)日:2018-11-01
Embodiments herein provide for compositions and methods for inhibiting pathological endothelial-to-mesenchymal transition (EndMT), e.g., in endothelial cells and in a mammal. Specially, pathological EndMT can be inhibited by inhibiting CD45, either protein activity or protein expression or both, and optionally also inhibiting TGF-β. Compositions comprising a CD45 inhibitor, a CD45 inhibitor and a TGF-β inhibitor, or a CD45 inhibitor, a TGF-β inhibitor and an anti-fibrosis agent are disclosed.