Journal
JOURNAL OF MEDICINAL CHEMISTRY
Volume 66, Issue 15, Pages 10528-10557Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jmedchem.3c00644
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Idiopathic pulmonary fibrosis is a difficult-to-control, incurable disease that can lead to pulmonary deterioration. The use of pan-histone deacetylase inhibitors has shown potential for reducing pulmonary fibrosis, but with off-target effects. This study aims to discover selective HDAC inhibitors for mitigating TGF-β-induced pulmonary fibrosis through a two-stage screening platform. The platform successfully identified two potential leads, J27644 (15) and 20, which can accelerate the development of HDAC inhibitors and reduce the cost.
Idiopathic pulmonary fibrosis is incurable, and its progressionis difficult to control and thus can lead to pulmonary deterioration.Pan-histone deacetylase inhibitors such as SAHA have shown potentialfor modulating pulmonary fibrosis yet with off-target effects. Therefore,selective HDAC inhibitors would be beneficial for reducing side effects.Toward this goal, we designed and synthesized 24 novel HDAC6, HDAC8,or dual HDAC6/8 inhibitors and established a two-stage screening platformto rapidly screen for HDAC inhibitors that effectively mitigate TGF-& beta;-inducedpulmonary fibrosis. The first stage consisted of a mouse NIH-3T3 fibroblastprescreen and yielded five hits. In the second stage, human pulmonaryfibroblasts (HPFs) were used, and four out of the five hits were testedfor caco-2 permeability and liver microsome stability to give twopotential leads: J27644 (15) and 20. Thisnovel two-stage screen platform will accelerate the discovery andreduce the cost of developing HDAC inhibitors to mitigate TGF-& beta;-inducedpulmonary fibrosis.
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