Zehender, Ariella, Li, Yi-Nan, Lin, Neng-Yu, Stefanica, Adrian, Nuechel, Julian, Chen, Chih-Wei, Hsu, Hsiao-Han, Zhu, Honglin, Ding, Xiao, Huang, Jingang, Shen, Lichong, Gyoerfi, Andrea-Hermina, Soare, Alina, Rauber, Simon, Bergmann, Christina, Ramming, Andreas, Plomann, Markus, Eckes, Beate, Schett, Georg and Distler, Joerg H. W. (2021). TGF beta promotes fibrosis by MYST1-dependent epigenetic regulation of autophagy. Nat. Commun., 12 (1). BERLIN: NATURE RESEARCH. ISSN 2041-1723

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Abstract

Activation of fibroblasts is essential for physiological tissue repair. Uncontrolled activation of fibroblasts, however, may lead to tissue fibrosis with organ dysfunction. Although several pathways capable of promoting fibroblast activation and tissue repair have been identified, their interplay in the context of chronic fibrotic diseases remains incompletely understood. Here, we provide evidence that transforming growth factor-beta (TGF beta) activates autophagy by an epigenetic mechanism to amplify its profibrotic effects. TGF beta induces autophagy in fibrotic diseases by SMAD3-dependent downregulation of the H4K16 histone acetyltransferase MYST1, which regulates the expression of core components of the autophagy machinery such as ATG7 and BECLIN1. Activation of autophagy in fibroblasts promotes collagen release and is both, sufficient and required, to induce tissue fibrosis. Forced expression of MYST1 abrogates the stimulatory effects of TGF beta on autophagy and re-establishes the epigenetic control of autophagy in fibrotic conditions. Interference with the aberrant activation of autophagy inhibits TGF beta -induced fibroblast activation and ameliorates experimental dermal and pulmonary fibrosis. These findings link uncontrolled TGF beta signaling to aberrant autophagy and deregulated epigenetics in fibrotic diseases and may contribute to the development of therapeutic interventions in fibrotic diseases. Uncontrolled activation of fibroblasts contributes to tissue fibrosis and organ dysfunction. Here the authors demonstrate that the epigenetic control of autophagy is disturbed by a TGF beta -dependent downregulation of MYST1 in systemic sclerosis patients. Restoration of the epigenetic control of autophagy reduces fibroblast activation and ameliorates fibrotic tissue remodeling.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Zehender, AriellaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, Yi-NanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lin, Neng-YuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stefanica, AdrianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nuechel, JulianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chen, Chih-WeiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hsu, Hsiao-HanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhu, HonglinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ding, XiaoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Huang, JingangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shen, LichongUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gyoerfi, Andrea-HerminaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Soare, AlinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rauber, SimonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bergmann, ChristinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ramming, AndreasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Plomann, MarkusUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eckes, BeateUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schett, GeorgUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Distler, Joerg H. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-593100
DOI: 10.1038/s41467-021-24601-y
Journal or Publication Title: Nat. Commun.
Volume: 12
Number: 1
Date: 2021
Publisher: NATURE RESEARCH
Place of Publication: BERLIN
ISSN: 2041-1723
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
GROWTH-FACTOR-BETA; PULMONARY-FIBROSIS; FIBROBLAST ACTIVATION; UNCONVENTIONAL SECRETION; HISTONE DEACETYLASE; SYSTEMIC-SCLEROSIS; LIVER FIBROSIS; INHIBITION; DISEASE; CELLSMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/59310

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