title: A Second WNT for Old Drugs: Drug Repositioning against WNT-Dependent Cancers.
abstract: Aberrant WNT signaling underlies cancerous transformation and growth in many tissues, such as the colon, breast, liver, and others. Downregulation of the WNT pathway is a desired mode of development of targeted therapies against these cancers. Despite the urgent need, no WNT signaling-directed drugs currently exist, and only very few candidates have reached early phase clinical trials. Among different strategies to develop WNT-targeting anti-cancer therapies, repositioning of existing drugs previously approved for other diseases is a promising approach. Nonsteroidal anti-inflammatory drugs like aspirin, the anti-leprotic clofazimine, and the anti-trypanosomal suramin are among examples of drugs having recently revealed WNT-targeting activities. In total, 16 human-use drug compounds have been found to be working through the WNT pathway and show promise for their prospective repositioning against various cancers. Advances, hurdles, and prospects of developing these molecules as potential drugs against WNT-dependent cancers, as well as approaches for discovering new ones for repositioning, are the foci of the current review.
authors.affiliation: Department of Pharmacology and Toxicology, University of Lausanne, Lausanne 1011, Switzerland. kamal.ahmed@unil.ch.
authors.forename: Kamal
authors.initials: K
authors.lastname: Ahmed
authors.affiliation: Department of Pharmacology and Toxicology, University of Lausanne, Lausanne 1011, Switzerland. holly.shaw@unil.ch.
authors.forename: Holly V
authors.initials: HV
authors.lastname: Shaw
authors.affiliation: Department of Pharmacology and Toxicology, University of Lausanne, Lausanne 1011, Switzerland. alexey.koval@unil.ch.
authors.forename: Alexey
authors.initials: A
authors.lastname: Koval
authors.affiliation: Department of Pharmacology and Toxicology, University of Lausanne, Lausanne 1011, Switzerland. vladimir.katanaev@unil.ch.|School of Biomedicine, Far Eastern Federal University, Vladivostok 690922, Russia. vladimir.katanaev@unil.ch.
authors.forename: Vladimir L
authors.initials: VL
authors.lastname: Katanaev
keywords: WNT pathway; approved drugs; repositioning