Development of ketobenzothiazole-based peptidomimetic TMPRSS13 inhibitors with low nanomolar potency

Author:

Joushomme AlexandreORCID,Désilets AntoineORCID,Champagne William,Hassanzadeh Malihe,Lemieux GabrielORCID,Gravel-Trudeau Alice,Lepage MatthieuORCID,Lafrenière Sabrina,Froehlich Ulrike,List KarinORCID,Boudreault Pierre-LucORCID,Leduc RichardORCID

Abstract

AbstractTMPRSS13, a member of the Type II Transmembrane Serine Proteases (TTSP) family, is involved in cancer progression and in cell entry of respiratory viruses. To date, no inhibitors have been specifically developed toward this protease. In this study, a chemical library of 65 ketobenzothiazole-based peptidomimetic molecules was screened against a proteolytically active form of recombinant TMPRSS13 to identify novel inhibitors. Following an initial round of screening, subsequent synthesis of additional derivatives supported by molecular modelling, uncovered important molecular determinants involved in TMPRSS13 inhibition. One inhibitor, N-0430, achieved low nanomolar affinity towards TMPRSS13 activity in a cellular context. Using a SARS-CoV-2 pseudovirus cell entry model, we further show the ability of N-0430 to block TMPRSS13-dependent entry of the pseudovirus. The identified peptidomimetic inhibitors and the molecular insights of their potency gained from this study will aid in the development of specific TMPRSS13 inhibitors.

Publisher

Cold Spring Harbor Laboratory

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