RAGE is a key regulator of ductular reaction-mediated fibrosis during cholestasis
Abstrak
Abstract Ductular reaction (DR) is the hallmark of cholestatic diseases manifested in the proliferation of bile ductules lined by biliary epithelial cells (BECs). It is commonly associated with an increased risk of fibrosis and liver failure. The receptor for advanced glycation end products (RAGE) was identified as a critical mediator of DR during chronic injury. Yet, the direct link between RAGE-mediated DR and fibrosis as well as the mode of interaction between BECs and hepatic stellate cells (HSCs) to drive fibrosis remain elusive. Here, we delineate the specific function of RAGE on BECs during DR and its potential association with fibrosis in the context of cholestasis. Employing a biliary lineage tracing cholestatic liver injury mouse model, combined with whole transcriptome sequencing and in vitro analyses, we reveal a role for BEC-specific Rage activity in fostering a pro-fibrotic milieu. RAGE is predominantly expressed in BECs and contributes to DR. Notch ligand Jagged1 is secreted from activated BECs in a Rage -dependent manner and signals HSCs in trans, eventually enhancing fibrosis during cholestasis.
Penulis (19)
Wai-Ling Macrina Lam
Gisela Gabernet
Tanja Poth
Melanie Sator-Schmitt
Morgana Barroso Oquendo
Bettina Kast
Sabrina Lohr
Aurora de Ponti
Lena Weiß
Martin Schneider
Dominic Helm
Karin Müller-Decker
Peter Schirmacher
Mathias Heikenwälder
Ursula Klingmüller
Doris Schneller
Fabian Geisler
Sven Nahnsen
Peter Angel
Akses Cepat
- Tahun Terbit
- 2025
- Bahasa
- en
- Total Sitasi
- 1×
- Sumber Database
- CrossRef
- DOI
- 10.1038/s44319-024-00356-7
- Akses
- Open Access ✓