Development of hypoxia-inducible factor (HIF)-1α inhibitors: Effect of ortho-carborane substituents on HIF transcriptional activity under hypoxia
摘要:
A series of substituted ortho-carboranylphenoxyacetanilides were synthesized and evaluated for their ability to inhibit hypoxia-induced HIF-1 transcriptional activity using a cell-based reporter assay in HeLa cells expressing the HRE-dependent firefly luciferase reporter construct (HRE-Luc) and constitutively expressing CMV-driven Renilla luciferase reporter, and their ability to inhibit cell growth (GI(50)) using the MTT assay. Among the compounds synthesized, 1g and 1l showed significant inhibition of hypoxia-induced HIF-1 transcriptional activity (IC50: 1.9 +/- 0.4 and 1.4 +/- 0.2 mu M, respectively). Both compounds suppressed HIF-1 alpha accumulation in a concentration-dependent manner. The porcine heart malate dehydrogenase (MDH) refolding assay revealed that compound 1l inhibited human Hsp60 chaperone activity (IC50: 6.80 +/- 0.25 mu M) and this inhibition activity was higher than that of ETB (IC50: 10.9 +/- 0.63 mu M). (c) 2012 Elsevier Ltd. All rights reserved.
2-Hydroxyoxanilic acid derivatives and salts, their preparation and pharmaceutical compositions containing them
申请人:YAMANOUCHI PHARMACEUTICAL CO. LTD.
公开号:EP0030436A1
公开(公告)日:1981-06-17
2-hydroxyoxanilic acid derivatives shown by the following formula
and salts thereof possess an immunoregulatory action and can be useful as antiallergic agents, antiasthmatics, antirheumatics, carcinostatic agents, therapeutic agents for autoimmune disease, and suppressants of rejection in tissue transplants and skin grafts. They can be made from the corresponding aminophenols and oxalylic acids.
Stimulator of interferongene (STING) plays critical roles in the cytoplasmic DNA-sensing pathway and in the induction of inflammatory response. Aberrant cytoplasmic DNA accumulation and STING activation are implicated in numerous inflammatory and autoimmune diseases. Here, we reported the discovery of a series of thiazolecarboxamide-based STING inhibitors through a molecular planarity/symmetry disruption