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Wan J, Wang J, Wagner LE, Wang OH, Gui F, Chen J, Zhu X, Haddock AN, Edenfield BH, Haight B, Mukhopadhyay D, Wang Y, Yule DI, Bi Y, Ji B. Pancreas-specific CHRM3 activation causes pancreatitis in mice. JCI Insight 2021; 6:132585. [PMID: 34314386 PMCID: PMC8492327 DOI: 10.1172/jci.insight.132585] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 07/22/2021] [Indexed: 12/26/2022] Open
Abstract
Hyperstimulation of the cholecystokinin 1 receptor (CCK1R), a G protein-coupled receptor (GPCR), in pancreatic acinar cells is commonly used to induce pancreatitis in rodents. Human pancreatic acinar cells lack CCK1R but express cholinergic receptor muscarinic 3 (M3R), another GPCR. To test whether M3R activation is involved in pancreatitis, a mutant M3R was conditionally expressed in pancreatic acinar cells in mice. This mutant receptor loses responsiveness to its native ligand, acetylcholine, but can be activated by an inert small molecule, clozapine-N-oxide (CNO). Intracellular calcium and amylase were elicited by CNO in pancreatic acinar cells isolated from mutant M3R mice but not WT mice. Similarly, acute pancreatitis (AP) could be induced by a single injection of CNO in the transgenic mice but not WT mice. Compared with the cerulein-induced AP, CNO caused more widespread acinar cell death and inflammation. Furthermore, chronic pancreatitis developed at 4 weeks after 3 episodes of CNO-induced AP. In contrast, in mice with 3 recurrent episodes of cerulein-included AP, pancreas histology was restored in 4 weeks. Furthermore, the M3R antagonist ameliorated the severity of cerulein-induced AP in WT mice. We conclude that M3R activation can cause the pathogenesis of pancreatitis. This model may provide an alternative approach for pancreatitis research.
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Affiliation(s)
- Jianhua Wan
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, PR China
| | - Jiale Wang
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Larry E. Wagner
- Department of Pharmacology and Physiology, University of Rochester, Rochester, New York, USA
| | - Oliver H. Wang
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Fu Gui
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Jiaxiang Chen
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Xiaohui Zhu
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Ashley N. Haddock
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | | | - Brian Haight
- Prodo Laboratories Inc., Aliso Viejo, California, USA
| | - Debabrata Mukhopadhyay
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Ying Wang
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - David I. Yule
- Department of Pharmacology and Physiology, University of Rochester, Rochester, New York, USA
| | - Yan Bi
- Department of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida, USA
| | - Baoan Ji
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
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Waldron RT, Lugea A, Pandol SJ. Brake adjustment: Ca 2+ entry pathway provides a novel target for acute pancreatitis therapy. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:S284. [PMID: 32016003 PMCID: PMC6976478 DOI: 10.21037/atm.2019.11.119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 11/13/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Richard T Waldron
- Departments of Medicine and Biomedical Sciences, Cedars-Sinai Medical Center and Department of Medicine, UCLA David Geffen School of Medicine, Los Angeles, CA, USA
| | - Aurelia Lugea
- Departments of Medicine and Biomedical Sciences, Cedars-Sinai Medical Center and Department of Medicine, UCLA David Geffen School of Medicine, Los Angeles, CA, USA
| | - Stephen J Pandol
- Departments of Medicine and Biomedical Sciences, Cedars-Sinai Medical Center and Department of Medicine, UCLA David Geffen School of Medicine, Los Angeles, CA, USA
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Vervliet T, Yule DI, Bultynck G. Carbohydrate Loading to Combat Acute Pancreatitis. Trends Biochem Sci 2018; 43:741-744. [PMID: 30170888 DOI: 10.1016/j.tibs.2018.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 08/04/2018] [Indexed: 01/21/2023]
Abstract
Acute pancreatitis is characterized by ATP deficiency and sustained Ca2+ overload in pancreatic acinar cells, leading to premature zymogen activation, auto-digestion of the pancreas, and necrosis. Recent research reveals a rational approach to ameliorate disease through galactose feeding, bypassing hexokinases to restore ATP levels and Ca2+ homeostasis, thereby reducing disease markers.
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Affiliation(s)
- Tim Vervliet
- KU Leuven, Laboratory of Molecular & Cellular Signaling, Department of Cellular and Molecular Medicine, Campus Gasthuisberg O/N-I bus 802, Herestraat 49, B-3000 Leuven, Belgium
| | - David I Yule
- University of Rochester, Laboratory of Intracellular Calcium Signaling, Department of Pharmacology and Physiology, Rochester, NY 14642, USA
| | - Geert Bultynck
- KU Leuven, Laboratory of Molecular & Cellular Signaling, Department of Cellular and Molecular Medicine, Campus Gasthuisberg O/N-I bus 802, Herestraat 49, B-3000 Leuven, Belgium.
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