AQP3 is regulated by PPARγ and JNK in hepatic stellate cells carrying PNPLA3 I148M

Abstract Aquaglyceroporins (AQPs) allow the movement of glycerol that is required for triglyceride formation in hepatic stellate cells (HSC), as key cellular source of fibrogenesis in the liver. The genetic polymorphism I148M of the patatin-like phospholipase domain-containing 3 (PNPLA3) is associat...

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Autores principales:	Matteo Tardelli, Francesca V. Bruschi, Thierry Claudel, Veronica Moreno-Viedma, Emina Halilbasic, Fabio Marra, Merima Herac, Thomas M. Stulnig, Michael Trauner
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8b73a292eb56472ba1d21a8fd55ac455
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spelling	oai:doaj.org-article:8b73a292eb56472ba1d21a8fd55ac4552021-12-02T15:05:14ZAQP3 is regulated by PPARγ and JNK in hepatic stellate cells carrying PNPLA3 I148M10.1038/s41598-017-14557-92045-2322https://doaj.org/article/8b73a292eb56472ba1d21a8fd55ac4552017-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-14557-9https://doaj.org/toc/2045-2322Abstract Aquaglyceroporins (AQPs) allow the movement of glycerol that is required for triglyceride formation in hepatic stellate cells (HSC), as key cellular source of fibrogenesis in the liver. The genetic polymorphism I148M of the patatin-like phospholipase domain-containing 3 (PNPLA3) is associated with hepatic steatosis and its progression to steatohepatitis (NASH), fibrosis and cancer. We aimed to explore the role of AQP3 for HSC activation and unveil its potential interactions with PNPLA3. HSC were isolated from human liver, experiments were performed in primary HSC and human HSC line LX2. AQP3 was the only aquaglyceroporin present in HSC and its expression decreased during activation. The PPARγ agonist, rosiglitazone, recovered AQP3 expression also in PNPLA3 I148M carrying HSC. When PNPLA3 was silenced, AQP3 expression increased. In liver sections from patients with NASH, the decreased amount of AQP3 was proportional to the severity of fibrosis and presence of the PNPLA3 I148M variant. In PNPLA3 I148M cells, the blockade of JNK pathway upregulated AQP3 in synergism with PPARγ. In conclusion, we demonstrated profound reduction of AQP3 in HSC carrying the PNPLA3 I148M variant in parallel to decreased PPARγ activation, which could be rescued by rosiglitazone and blockade of JNK.Matteo TardelliFrancesca V. BruschiThierry ClaudelVeronica Moreno-ViedmaEmina HalilbasicFabio MarraMerima HeracThomas M. StulnigMichael TraunerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Matteo Tardelli Francesca V. Bruschi Thierry Claudel Veronica Moreno-Viedma Emina Halilbasic Fabio Marra Merima Herac Thomas M. Stulnig Michael Trauner AQP3 is regulated by PPARγ and JNK in hepatic stellate cells carrying PNPLA3 I148M
description	Abstract Aquaglyceroporins (AQPs) allow the movement of glycerol that is required for triglyceride formation in hepatic stellate cells (HSC), as key cellular source of fibrogenesis in the liver. The genetic polymorphism I148M of the patatin-like phospholipase domain-containing 3 (PNPLA3) is associated with hepatic steatosis and its progression to steatohepatitis (NASH), fibrosis and cancer. We aimed to explore the role of AQP3 for HSC activation and unveil its potential interactions with PNPLA3. HSC were isolated from human liver, experiments were performed in primary HSC and human HSC line LX2. AQP3 was the only aquaglyceroporin present in HSC and its expression decreased during activation. The PPARγ agonist, rosiglitazone, recovered AQP3 expression also in PNPLA3 I148M carrying HSC. When PNPLA3 was silenced, AQP3 expression increased. In liver sections from patients with NASH, the decreased amount of AQP3 was proportional to the severity of fibrosis and presence of the PNPLA3 I148M variant. In PNPLA3 I148M cells, the blockade of JNK pathway upregulated AQP3 in synergism with PPARγ. In conclusion, we demonstrated profound reduction of AQP3 in HSC carrying the PNPLA3 I148M variant in parallel to decreased PPARγ activation, which could be rescued by rosiglitazone and blockade of JNK.
format	article
author	Matteo Tardelli Francesca V. Bruschi Thierry Claudel Veronica Moreno-Viedma Emina Halilbasic Fabio Marra Merima Herac Thomas M. Stulnig Michael Trauner
author_facet	Matteo Tardelli Francesca V. Bruschi Thierry Claudel Veronica Moreno-Viedma Emina Halilbasic Fabio Marra Merima Herac Thomas M. Stulnig Michael Trauner
author_sort	Matteo Tardelli
title	AQP3 is regulated by PPARγ and JNK in hepatic stellate cells carrying PNPLA3 I148M
title_short	AQP3 is regulated by PPARγ and JNK in hepatic stellate cells carrying PNPLA3 I148M
title_full	AQP3 is regulated by PPARγ and JNK in hepatic stellate cells carrying PNPLA3 I148M
title_fullStr	AQP3 is regulated by PPARγ and JNK in hepatic stellate cells carrying PNPLA3 I148M
title_full_unstemmed	AQP3 is regulated by PPARγ and JNK in hepatic stellate cells carrying PNPLA3 I148M
title_sort	aqp3 is regulated by pparγ and jnk in hepatic stellate cells carrying pnpla3 i148m
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8b73a292eb56472ba1d21a8fd55ac455
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AQP3 is regulated by PPARγ and JNK in hepatic stellate cells carrying PNPLA3 I148M

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