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Panzica DA, Findlay AS, van Ladesteijn R, Collinson JM. The core planar cell polarity gene, Vangl2, maintains apical-basal organisation of the corneal epithelium. J Anat 2019; 234:106-119. [PMID: 28833131 PMCID: PMC6284432 DOI: 10.1111/joa.12676] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/19/2017] [Indexed: 12/23/2022] Open
Abstract
The role of the core planar cell polarity (PCP) pathway protein, Vangl2, was investigated in the corneal epithelium of the mammalian eye, a paradigm anatomical model of planar cell migration. The gene was conditionally knocked out in vivo and knocked down by siRNA, followed by immunohistochemical, behavioural and morphological analysis of corneal epithelial cells. The primary defects observed in vivo were of apical-basal organisation of the corneal epithelium, with abnormal stratification throughout life, mislocalisation of the cell membrane protein, Scribble, to the basal side of cells, and partial loss of the epithelial basement membrane. Planar defects in migration after wounding and in the presence of an applied electric field were noted. However, knockdown of Vangl2 also retarded cell migration in individual cells that had no contact with their neighbours, which precluded a classic PCP mechanism. It is concluded that some of the planar polarity phenotypes in PCP mutants may arise from disruption of apical-basal polarity.
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Affiliation(s)
- D. Alessio Panzica
- School of MedicineMedical Sciences and NutritionUniversity of AberdeenAberdeenUK
| | - Amy S. Findlay
- School of MedicineMedical Sciences and NutritionUniversity of AberdeenAberdeenUK
| | | | - J. Martin Collinson
- School of MedicineMedical Sciences and NutritionUniversity of AberdeenAberdeenUK
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Qian D, Wei G, Xu C, He Z, Hua J, Li J, Hu Q, Lin S, Gong J, Meng H, Zhou B, Teng H, Song Z. Bone marrow-derived mesenchymal stem cells (BMSCs) repair acute necrotized pancreatitis by secreting microRNA-9 to target the NF-κB1/p50 gene in rats. Sci Rep 2017; 7:581. [PMID: 28373667 PMCID: PMC5428835 DOI: 10.1038/s41598-017-00629-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 03/08/2017] [Indexed: 02/07/2023] Open
Abstract
Acute pancreatitis (AP) is a common acute abdominal disease, 10-20% of which can evolve into severe AP (SAP) causing significant morbidity and mortality. Bone marrow-derived mesenchymal stem cells (BMSCs) have the potential of repairing SAP, but the detailed mechanism remains unknown. We demonstrate here that microRNA-9 (miR-9) modified BMSCs (pri-miR-9-BMSCs) can significantly reduce the pancreatic edema, infiltration, hemorrhage, necrosis, the release of amylase and lipase. Meanwhile, decreased local/systemic inflammatory response (TNF-α↓, IL-1β↓, IL-6↓, HMGB1↓, MPO↓, CD68↓, IL-4↑, IL-10↑, and TGF-β↑) and enhanced regeneration of damaged pancreas (Reg4↑, PTF1↑, and PDX1↑) are also promoted. But these effects diminish or disappear after antagonizing miR-9 (TuD). Besides, we find that miR-9 is negatively correlated with AP and miR-9 agomir which can mimic the effects of pri-miR-9-BMSCs and protect injured pancreas. Furthermore, we investigate that BMSCs deliver miR-9 to the injured pancreas or peripheral blood mononuclear cell (PBMC), which can target the NF-κB1/p50 gene and inhibit the NF-κB signaling pathway (p-P65↓, NF-κB1/p50↓, IκBα↑, IκBβ↑). Taken together, these results show that miR-9 is a key paracrine factor of BMSCs attenuating SAP targeting the NF-κB1/p50 gene and suppressing the NF-κB signaling pathway.
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Affiliation(s)
- Daohai Qian
- Department of General Surgery, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui, 241001, China.,Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China.,Department of Pharmacology and Pharmaceutical Sciences, USC School of Pharmacy, Los Angeles, California, 90089, USA
| | - Ge Wei
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Chenglei Xu
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Zhigang He
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Jie Hua
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Jian Li
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Qili Hu
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Shengping Lin
- Intensive Care Unit, Sir Run Run Shaw Hospital, Affiliated to Zhejiang University of Medicine, Hangzhou, Zhejiang, 310058, China
| | - Jian Gong
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Hongbo Meng
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Bo Zhou
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Hongfei Teng
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China
| | - Zhenshun Song
- Department of General Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University School of Medicine, Shanghai, 200072, China.
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