Article Publish Status: FREE
Abstract Title:

Screening Identifies Thimerosal as a Selective Inhibitor of Endoplasmic Reticulum Aminopeptidase 1.

Abstract Source:

ACS Med Chem Lett. 2016 Jul 14 ;7(7):681-5. Epub 2016 May 31. PMID: 27437077

Abstract Author(s):

Athanasios Stamogiannos, Athanasios Papakyriakou, Francois-Xavier Mauvais, Peter van Endert, Efstratios Stratikos

Article Affiliation:

Athanasios Stamogiannos


We employed virtual screening followed by in vitro evaluation to discover novel inhibitors of ER aminopeptidase 1, an important enzyme for the human adaptive immune response that has emerged as an attractive target for cancer immunotherapy and the control of autoimmunity. Screening hits included three structurally related compounds carrying the (E)-N'-((1H-indol-3-yl)methylene)-1H-pyrazole-5-carbohydrazide scaffold and (2-carboxylatophenyl)sulfanyl-ethylmercury as novel ERAP1 inhibitors. The latter, also known as thimerosal, a common component in vaccines, was found to inhibit ERAP1 in the submicromolar range and to present strong selectivity versus the homologous aminopeptidases ERAP2 and IRAP. Cell-based analysis indicated that thimerosal can effectively reduce ERAP1-dependent cross-presentation by dendritic cells in a dose-dependent manner.

Study Type : Human In Vitro

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Sayer Ji
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