Journal
CELL DEATH & DISEASE
Volume 8, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/cddis.2017.313
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Funding
- DFG Excellent Initiative Frontier award
- Ligue contre le Cancer
- Agence National de la Recherche (ANR) - Projets blancs
- ANR under the frame of E-Rare-2
- ERA-Net for Research on Rare Diseases
- Association pour la recherche sur le cancer (ARC)
- Canceropole Ile-de-France
- Institut National du Cancer (INCa)
- Institut Universitaire de France
- Fondation pour la Recherche Medicale (FRM)
- European Commission (ArtForce)
- European Research Council (ERC)
- LeDucq Foundation
- LabEx Immuno-Oncology
- SIRIC Stratified Oncology Cell DNA Repair and Tumor Immune Elimination (SOCRATE)
- SIRIC Cancer Research and Personalized Medicine (CARPEM)
- Paris Alliance of Cancer Research Institutes (PACRI)
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Invalidation of pancreatic autophagy entails pancreatic atrophy, endocrine and exocrine insufficiency and pancreatitis. The aim of this study was to investigate whether depletion of Rip3, which is involved in necroptotic signaling, may attenuate the pancreatic atrophy and pancreatitis resulting from autophagy inhibition. Autophagy and necroptosis signaling were evaluated in mice lacking expression of Rip3 in all organs and Atg7 in the pancreas. Acinar cell death, inflammation and fibrosis were evaluated by using of a compendium of immunofluorescence methods and immunoblots. Mice deficient for pancreatic Atg7 developed acute pancreatitis, which progressed to chronic pancreatitis. This phenotype reduces autophagy, increase apoptosis and necroptosis, inflammation and fibrosis, as well as premature death of the animals. Knockout of Rip3 exacerbated the apoptotic death of acinar cells, increased tissue damage, reduced macrophage infiltration and further accelerated the death of the mice with Atg7-deficient pancreas. The pancreatic degeneration induced by autophagy inhibition was exacerbated by Rip3 deletion.
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