PMID- 36499651 OWN - NLM STAT- MEDLINE DCOM- 20221216 LR - 20221221 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 23 IP - 23 DP - 2022 Dec 5 TI - The Soluble Guanylate Cyclase Stimulator BAY 41-2272 Attenuates Transforming Growth Factor beta1-Induced Myofibroblast Differentiation of Human Corneal Keratocytes. LID - 10.3390/ijms232315325 [doi] LID - 15325 AB - Corneal transparency, necessary for vision and depending on the high organization of stromal extracellular matrix, is maintained by keratocytes. Severe or continuous corneal injuries determine exaggerated healing responses resulting in the formation of irreversible fibrotic scars and vision impairment. Soluble guanylate cyclase (sGC) stimulation demonstrated antifibrotic effects in both experimental fibrosis and human lung and skin fibroblasts. Here, we assessed whether sGC stimulation with BAY 41-2272 could attenuate transforming growth factor beta1 (TGFbeta1)-induced myofibroblast differentiation of human corneal keratocytes. Cells were challenged with TGFbeta1, with/without BAY 41-2272 preincubation, and subsequently assessed for viability, proliferation, migration, chemoinvasion, as well for the expression of myofibroblast/fibroblast activation markers and contractile abilities. Treatment with BAY 41-2272 did not affect keratocyte viability, while preincubation of cells with the sGC stimulator was able to inhibit TGFbeta1-induced proliferation, wound healing capacity, and invasiveness. BAY 41-2272 was also able to attenuate TGFbeta1-induced myofibroblast-like profibrotic phenotype of keratocytes, as demonstrated by the significant decrease in ACTA2, COL1A1, COL1A2, FN1 and PDPN gene expression, as well as in alpha-smooth muscle actin, alpha-1 chain of type I collagen, podoplanin, vimentin and N-cadherin protein expression. Finally, BAY 41-2272 significantly counteracted the TGFbeta1-induced myofibroblast-like ability of keratocytes to contract collagen gels, reduced phosphorylated Smad3 protein levels, and attenuated gene expression of proinflammatory cytokines. Collectively, our data show for the first time that BAY 41-2272 is effective in counteracting keratocyte-to-myofibroblast transition, thus providing the rationale for the development of sGC stimulators as novel promising modulators of corneal scarring and fibrosis. FAU - Rosa, Irene AU - Rosa I AUID- ORCID: 0000-0001-6352-0175 AD - Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy. FAU - Fioretto, Bianca Saveria AU - Fioretto BS AUID- ORCID: 0000-0001-9275-7593 AD - Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy. AD - Section of Internal Medicine, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy. FAU - Romano, Eloisa AU - Romano E AUID- ORCID: 0000-0003-2744-8625 AD - Section of Internal Medicine, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy. FAU - Buzzi, Matilde AU - Buzzi M AD - Eye Clinic, Careggi Hospital, Department of Neurosciences, Psychology, Pharmacology and Child Health (NEUROFARBA), University of Florence, 50134 Florence, Italy. FAU - Mencucci, Rita AU - Mencucci R AUID- ORCID: 0000-0003-1856-6363 AD - Eye Clinic, Careggi Hospital, Department of Neurosciences, Psychology, Pharmacology and Child Health (NEUROFARBA), University of Florence, 50134 Florence, Italy. FAU - Marini, Mirca AU - Marini M AUID- ORCID: 0000-0002-1934-0414 AD - Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy. FAU - Manetti, Mirko AU - Manetti M AUID- ORCID: 0000-0003-3956-8480 AD - Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy. AD - Imaging Platform, Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy. LA - eng PT - Journal Article DEP - 20221205 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Transforming Growth Factor beta1) RN - 0 (Collagen Type I, alpha2 Subunit) RN - 0 (3-(4-Amino-5-cyclopropylpyrimidine-2-yl)-1-(2-fluorobenzyl)-1H-pyrazolo(3,4-b)pyridine) RN - EC 4.6.1.2 (Soluble Guanylyl Cyclase) RN - 0 (Actins) SB - IM MH - Humans MH - *Corneal Keratocytes/metabolism MH - Transforming Growth Factor beta1/pharmacology/metabolism MH - Soluble Guanylyl Cyclase/metabolism MH - Cells, Cultured MH - Myofibroblasts/metabolism MH - Cell Differentiation MH - Actins/metabolism MH - Fibroblasts/metabolism MH - *Corneal Injuries/metabolism MH - Fibrosis PMC - PMC9737374 OTO - NOTNLM OT - corneal fibrosis OT - human cornea OT - keratocytes OT - myofibroblasts OT - soluble guanylate cyclase stimulator OT - transforming growth factor beta1 COIS- The authors declare no conflict of interest. EDAT- 2022/12/12 06:00 MHDA- 2022/12/15 06:00 PMCR- 2022/12/05 CRDT- 2022/12/11 01:21 PHST- 2022/11/04 00:00 [received] PHST- 2022/12/01 00:00 [revised] PHST- 2022/12/03 00:00 [accepted] PHST- 2022/12/11 01:21 [entrez] PHST- 2022/12/12 06:00 [pubmed] PHST- 2022/12/15 06:00 [medline] PHST- 2022/12/05 00:00 [pmc-release] AID - ijms232315325 [pii] AID - ijms-23-15325 [pii] AID - 10.3390/ijms232315325 [doi] PST - epublish SO - Int J Mol Sci. 2022 Dec 5;23(23):15325. doi: 10.3390/ijms232315325.