BACKGROUND AND OBJECTIVES: Fibrosis is a major socioeconomic burden, but effective antifibrotic therapies are not available in the clinical routine. There is growing evidence for a central role of Wnt signalling in fibrotic diseases such as systemic sclerosis, and we therefore evaluated the translational potential of pharmacological Wnt inhibition in experimental dermal fibrosis. METHODS: We examined the antifibrotic effects of PKF118-310 and ICG-001, two novel inhibitors of downstream canonical Wnt signalling, in the models of prevention and treatment of bleomycin-induced dermal fibrosis as well as in experimental dermal fibrosis induced by adenoviral overexpression of a constitutively active transforming growth factor (TGF)-β receptor I. RESULTS: PKF118-310 and ICG-001 were well tolerated throughout all experiments. Both therapeutic approaches showed antifibrotic effects in preventing and reversing bleomycin-induced dermal fibrosis as measured by skin thickness, hydroxyproline content and myofibroblast counts. PKF118-310 and ICG-001 were effective in inhibiting TGF-β receptor I-driven fibrosis as assessed by the same outcome measures. CONCLUSIONS: Blockade of canonical Wnt signalling by PKF118-310 and ICG-001 showed antifibrotic effects in different models of skin fibrosis. Both therapies were well tolerated. Although further experimental evidence for efficacy and tolerability is necessary, inhibition of canonical Wnt signalling is a promising treatment approach for fibrosis.
BACKGROUND AND OBJECTIVES:Fibrosis is a major socioeconomic burden, but effective antifibrotic therapies are not available in the clinical routine. There is growing evidence for a central role of Wnt signalling in fibrotic diseases such as systemic sclerosis, and we therefore evaluated the translational potential of pharmacological Wnt inhibition in experimental dermal fibrosis. METHODS: We examined the antifibrotic effects of PKF118-310 and ICG-001, two novel inhibitors of downstream canonical Wnt signalling, in the models of prevention and treatment of bleomycin-induced dermal fibrosis as well as in experimental dermal fibrosis induced by adenoviral overexpression of a constitutively active transforming growth factor (TGF)-β receptor I. RESULTS: PKF118-310 and ICG-001 were well tolerated throughout all experiments. Both therapeutic approaches showed antifibrotic effects in preventing and reversing bleomycin-induced dermal fibrosis as measured by skin thickness, hydroxyproline content and myofibroblast counts. PKF118-310 and ICG-001 were effective in inhibiting TGF-β receptor I-driven fibrosis as assessed by the same outcome measures. CONCLUSIONS: Blockade of canonical Wnt signalling by PKF118-310 and ICG-001 showed antifibrotic effects in different models of skin fibrosis. Both therapies were well tolerated. Although further experimental evidence for efficacy and tolerability is necessary, inhibition of canonical Wnt signalling is a promising treatment approach for fibrosis.
Authors: Robert Lafyatis; Julio C Mantero; Jessica Gordon; Nina Kishore; Mary Carns; Howard Dittrich; Robert Spiera; Robert W Simms; John Varga Journal: J Invest Dermatol Date: 2017-08-12 Impact factor: 8.551
Authors: Zhiqiang Jiang; Taotao Lao; Weiliang Qiu; Francesca Polverino; Kushagra Gupta; Feng Guo; John D Mancini; Zun Zar Chi Naing; Michael H Cho; Peter J Castaldi; Yang Sun; Jane Yu; Maria E Laucho-Contreras; Lester Kobzik; Benjamin A Raby; Augustine M K Choi; Mark A Perrella; Caroline A Owen; Edwin K Silverman; Xiaobo Zhou Journal: Am J Respir Crit Care Med Date: 2016-07-15 Impact factor: 21.405
Authors: Michael D Arensman; Donatello Telesca; Anna R Lay; Kathleen M Kershaw; Nanping Wu; Timothy R Donahue; David W Dawson Journal: Mol Cancer Ther Date: 2014-07-31 Impact factor: 6.261
Authors: Carmel B Nanthakumar; Richard J D Hatley; Seble Lemma; Jack Gauldie; Richard P Marshall; Simon J F Macdonald Journal: Nat Rev Drug Discov Date: 2015-09-04 Impact factor: 84.694