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Zhong A, Short C, Xu J, Fernandez GE, Malkoff N, Noriega N, Yeo T, Wang L, Mavila N, Asahina K, Wang KS. Prominin-1 promotes restitution of the murine extrahepatic biliary luminal epithelium following cholestatic liver injury. Hepatol Commun 2023; 7:e0018. [PMID: 36662671 PMCID: PMC10019165 DOI: 10.1097/hc9.0000000000000018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/22/2022] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND AND AIMS Restitution of the extrahepatic biliary luminal epithelium in cholangiopathies is poorly understood. Prominin-1 (Prom1) is a key component of epithelial ciliary body of stem/progenitor cells. Given that intrahepatic Prom1-expressing progenitor cells undergo cholangiocyte differentiation, we hypothesized that Prom1 may promote restitution of the extrahepatic bile duct (EHBD) epithelium following injury. APPROACH AND RESULTS Utilizing various murine biliary injury models, we identified Prom1-expressing cells in the peribiliary glands of the EHBD. These Prom1-expressing cells are progenitor cells which give rise to cholangiocytes as part of the normal maintenance of the EHBD epithelium. Following injury, these cells proliferate significantly more rapidly to re-populate the biliary luminal epithelium. Null mutation of Prom1 leads to significantly >10-fold dilated peribiliary glands following rhesus rotavirus-mediated biliary injury. Cultured organoids derived from Prom1 knockout mice are comprised of biliary progenitor cells with altered apical-basal cellular polarity, significantly fewer and shorter cilia, and decreased organoid proliferation dynamics consistent with impaired cell motility. CONCLUSIONS We, therefore, conclude that Prom1 is involved in biliary epithelial restitution following biliary injury in part through its role in supporting cell polarity.
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Affiliation(s)
- Allen Zhong
- Developmental Biology, Regenerative Medicine, and Stem Cell Program, The Saban Research Institute, Children’s Hospital of Los Angeles, Los Angeles, California, USA
| | - Celia Short
- Developmental Biology, Regenerative Medicine, and Stem Cell Program, The Saban Research Institute, Children’s Hospital of Los Angeles, Los Angeles, California, USA
| | - Jiabo Xu
- Developmental Biology, Regenerative Medicine, and Stem Cell Program, The Saban Research Institute, Children’s Hospital of Los Angeles, Los Angeles, California, USA
| | - G. Esteban Fernandez
- Cellular Imaging Core, The Saban Research Institute, Children’s Hospital of Los Angeles, Los Angeles, California, USA
| | - Nicolas Malkoff
- Developmental Biology, Regenerative Medicine, and Stem Cell Program, The Saban Research Institute, Children’s Hospital of Los Angeles, Los Angeles, California, USA
| | - Nicolas Noriega
- Developmental Biology, Regenerative Medicine, and Stem Cell Program, The Saban Research Institute, Children’s Hospital of Los Angeles, Los Angeles, California, USA
| | - Theresa Yeo
- Developmental Biology, Regenerative Medicine, and Stem Cell Program, The Saban Research Institute, Children’s Hospital of Los Angeles, Los Angeles, California, USA
| | - Larry Wang
- Department of Pathology, Children’s Hospital Los Angeles, Los Angeles, California, USA
| | - Nirmala Mavila
- Department of Medicine, Cedars Sinai Medical Center, Los Angeles, California, USA
| | - Kinji Asahina
- Central Research Laboratory, Shiga University of Medical Science, Ōtsu, Shiga Prefecture, Japan
| | - Kasper S. Wang
- Developmental Biology, Regenerative Medicine, and Stem Cell Program, The Saban Research Institute, Children’s Hospital of Los Angeles, Los Angeles, California, USA
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Reusswig F, Polzin A, Klier M, Dille MA, Ayhan A, Benkhoff M, Lersch C, Prinz A, Gorressen S, Fischer JW, Kelm M, Elvers M. Only Acute but Not Chronic Thrombocytopenia Protects Mice against Left Ventricular Dysfunction after Acute Myocardial Infarction. Cells 2022; 11:3500. [PMID: 36359896 PMCID: PMC9659072 DOI: 10.3390/cells11213500] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/25/2022] [Accepted: 11/02/2022] [Indexed: 05/04/2024] Open
Abstract
BACKGROUND Platelets are major players of thrombosis and inflammation after acute myocardial infarction (AMI). The impact of thrombocytopenia on platelet-induced cellular processes post AMI is not well defined. METHODS The left anterior descending artery was ligated in C57/Bl6 mice and in two thrombocytopenic mouse models to induce AMI. RESULTS Platelets from STEMI patients and from C57/Bl6 mice displayed enhanced platelet activation after AMI. This allows platelets to migrate into the infarct but not into the remote zone of the left ventricle. Acute thrombocytopenia by antibody-induced platelet depletion resulted in reduced infarct size and improved cardiac function 24 h and 21 days post AMI. This was due to reduced platelet-mediated inflammation after 24 h and reduced scar formation after 21 days post AMI. The collagen composition and interstitial collagen content in the left ventricle were altered due to platelet interaction with cardiac fibroblasts. Acute inflammation was also significantly reduced in Mpl-/- mice with chronic thrombocytopenia, but cardiac remodeling was unaltered. Consequently, left ventricular function, infarct size and scar formation in Mpl-/- mice were comparable to controls. CONCLUSION This study discovers a novel role for platelets in cardiac remodeling and reveals that acute but not chronic thrombocytopenia protects left ventricular function post AMI.
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Affiliation(s)
- Friedrich Reusswig
- Heinrich-Heine University Medical Center, Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, 40225 Düsseldorf, Germany
| | - Amin Polzin
- Heinrich-Heine University Medical Center, Department of Cardiology, Pulmonology and Angiology, 40225 Düsseldorf, Germany
| | - Meike Klier
- Heinrich-Heine University Medical Center, Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, 40225 Düsseldorf, Germany
| | - Matthias Achim Dille
- Heinrich-Heine University Medical Center, Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, 40225 Düsseldorf, Germany
| | - Aysel Ayhan
- Heinrich-Heine University Medical Center, Department of Cardiology, Pulmonology and Angiology, 40225 Düsseldorf, Germany
| | - Marcel Benkhoff
- Heinrich-Heine University Medical Center, Department of Cardiology, Pulmonology and Angiology, 40225 Düsseldorf, Germany
| | - Celina Lersch
- Heinrich-Heine University Medical Center, Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, 40225 Düsseldorf, Germany
| | - Anika Prinz
- Institute for Pharmacology and Clinical Pharmacology, Heinrich-Heine University, 40225 Düsseldorf, Germany
| | - Simone Gorressen
- Institute for Pharmacology and Clinical Pharmacology, Heinrich-Heine University, 40225 Düsseldorf, Germany
| | - Jens Walter Fischer
- Institute for Pharmacology and Clinical Pharmacology, Heinrich-Heine University, 40225 Düsseldorf, Germany
| | - Malte Kelm
- Heinrich-Heine University Medical Center, Department of Cardiology, Pulmonology and Angiology, 40225 Düsseldorf, Germany
| | - Margitta Elvers
- Heinrich-Heine University Medical Center, Department of Vascular and Endovascular Surgery, Experimental Vascular Medicine, 40225 Düsseldorf, Germany
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