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Liu H, Xu X, Li J, Liu Z, Xiong Y, Yue M, Liu P. Overexpression of Plakophilin2 Mitigates Capillary Leak Syndrome in Severe Acute Pancreatitis by Activating the p38/MAPK Signaling Pathway. J Inflamm Res 2024; 17:4129-4149. [PMID: 38952564 PMCID: PMC11215460 DOI: 10.2147/jir.s459449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 06/18/2024] [Indexed: 07/03/2024] Open
Abstract
Purpose Capillary leak syndrome (CLS) is an intermediary phase between severe acute pancreatitis (SAP) and multiple organ failure. As a result, CLS is of clinical importance for enhancing the prognosis of SAP. Plakophilin2 (PKP2), an essential constituent of desmosomes, plays a critical role in promoting connections between epithelial cells. However, the function and mechanism of PKP2 in CLS in SAP are not clear at present. Methods We detected the expression of PKP2 in mice pancreatic tissue by transcriptome sequencing and bioinformatics analysis. PKP2 was overexpressed and knocked down to assess its influence on cell permeability, the cytoskeleton, tight junction molecules, cell adhesion junction molecules, and associated pathways. Results PKP2 expression was increased in the pancreatic tissues of SAP mice and human umbilical vein endothelial cells (HUVECs) after lipopolysaccharide (LPS) stimulation. PKP2 overexpression not only reduced endothelial cell permeability but also improved cytoskeleton relaxation in response to acute inflammatory stimulation. PKP2 overexpression increased levels of ZO-1, occludin, claudin1, β-catenin, and connexin43. The overexpression of PKP2 in LPS-induced HUVECs counteracted the inhibitory effect of SB203580 (a p38/MAPK signaling pathway inhibitor) on the p38/MAPK signaling pathway, thereby restoring the levels of ZO-1, β-catenin, and claudin1. Additionally, PKP2 suppression eliminated the enhanced levels of ZO-1, β-catenin, occludin, and claudin1 induced by dehydrocorydaline. We predicted that the upstream transcription factor PPARγregulates PKP2 expression, and our findings demonstrate that the PPARγactivator rosiglitazone significantly upregulates PKP2, whereas its antagonist GW9662 down-regulates PKP2. Administration of rosiglitazone significantly reduced the increase in HUVECs permeability stimulated by LPS. Conversely, PKP2 overexpression counteracted the GW9662-induced reduction in ZO-1, phosphorylated p38/p38, and claudin1. Conclusion The activation of the p38/MAPK signaling pathway by PKP2 mitigates CLS in SAP. PPARγactivator rosiglitazone can up-regulate PKP2. Overall, directing efforts toward PKP2 could prove to be a feasible treatment approach for effectively managing CLS in SAP.
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Affiliation(s)
- Hui Liu
- Department of Gastroenterology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People’s Republic of China
- Gastroenterology Institute of Jiangxi Province, Nanchang, People’s Republic of China
| | - Xuan Xu
- Department of Gastroenterology, The People’s Hospital of Longhua, Shenzhen, People’s Republic of China
| | - Ji Li
- Department of Gastroenterology, The People’s Hospital of Longhua, Shenzhen, People’s Republic of China
| | - Zheyu Liu
- Department of Gastroenterology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People’s Republic of China
| | - Yuwen Xiong
- Department of Gastroenterology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People’s Republic of China
| | - Mengli Yue
- Affiliated Longhua People’s Hospital, The Third School of Clinical Medicine, Southern Medical University, Shenzhen, People’s Republic of China
| | - Pi Liu
- Department of Gastroenterology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People’s Republic of China
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Aquaporin-mediated dysregulation of cell migration in disease states. Cell Mol Life Sci 2023; 80:48. [PMID: 36682037 DOI: 10.1007/s00018-022-04665-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/01/2022] [Accepted: 12/10/2022] [Indexed: 01/23/2023]
Abstract
Dysregulated cell migration and invasion are hallmarks of many disease states. This dysregulated migratory behavior is influenced by the changes in expression of aquaporins (AQPs) that occur during pathogenesis, including conditions such as cancer, endometriosis, and arthritis. The ubiquitous function of AQPs in migration of diseased cells makes them a crucial target for potential therapeutics; this possibility has led to extensive research into the specific mechanisms underlying AQP-mediated diseased cell migration. The functions of AQPs depend on a diverse set of variables including cell type, AQP isoform, disease state, cell microenvironments, and even the subcellular localization of AQPs. To consolidate the considerable work that has been conducted across these numerous variables, here we summarize and review the last decade's research covering the role of AQPs in the migration and invasion of cells in diseased states.
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Shangzu Z, Dingxiong X, ChengJun M, Yan C, Yangyang L, Zhiwei L, Ting Z, Zhiming M, Yiming Z, Liying Z, Yongqi L. Aquaporins: Important players in the cardiovascular pathophysiology. Pharmacol Res 2022; 183:106363. [PMID: 35905892 DOI: 10.1016/j.phrs.2022.106363] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/20/2022] [Accepted: 07/22/2022] [Indexed: 11/15/2022]
Abstract
Aquaporin is a membrane channel protein widely expressed in body tissues, which can control the input and output of water in cells. AQPs are differentially expressed in different cardiovascular tissues and participate in water transmembrane transport, cell migration, metabolism, inflammatory response, etc. The aberrant expression of AQPs highly correlates with the onset of ischemic heart disease, myocardial ischemia-reperfusion injury, heart failure, etc. Despite much attention to the regulatory role of AQPs in the cardiovascular system, the translation of AQPs into clinical application still faces many challenges, including clarification of the localization of AQPs in the cardiovascular system and mechanisms mediating cardiovascular pathophysiology, as well as the development of cardiovascular-specific AQPs modulators.Therefore, in this study, we comprehensively reviewed the critical roles of AQP family proteins in maintaining cardiovascular homeostasis and described the underlying mechanisms by which AQPs mediated the outcomes of cardiovascular diseases. Meanwhile, AQPs serve as important therapeutic targets, which provide a wide range of opportunities to investigate the mechanisms of cardiovascular diseases and the treatment of those diseases.
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Affiliation(s)
- Zhang Shangzu
- Gansu University of traditional Chinese Medicine, LanZhou, China
| | - Xie Dingxiong
- Gansu Institute of Cardiovascular Diseases, LanZhou,China
| | - Ma ChengJun
- Gansu University of traditional Chinese Medicine, LanZhou, China
| | - Chen Yan
- Gansu University of traditional Chinese Medicine, LanZhou, China
| | - Li Yangyang
- Gansu University of traditional Chinese Medicine, LanZhou, China
| | - Liu Zhiwei
- Gansu University of traditional Chinese Medicine, LanZhou, China
| | - Zhou Ting
- Gansu University of traditional Chinese Medicine, LanZhou, China
| | - Miao Zhiming
- Gansu University of traditional Chinese Medicine, LanZhou, China
| | - Zhang Yiming
- Gansu University of traditional Chinese Medicine, LanZhou, China
| | - Zhang Liying
- Gansu University of traditional Chinese Medicine, LanZhou, China; Gansu Institute of Cardiovascular Diseases, LanZhou,China.
| | - Liu Yongqi
- Gansu University of traditional Chinese Medicine, LanZhou, China; Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and the Prevention and Treatment with Traditional Chinese Medicine Research in Gansu Colleges and Universities Gansu University of Chinese Medicine, Lanzhou, China; Key Laboratory of Dunhuang Medicine and Transformation at Provincial and Ministerial Level, Lanzhou, China.
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Kong B, Zhao S, Kang X, Wang B. MicroRNA-133a-3p inhibits cell proliferation, migration and invasion in colorectal cancer by targeting AQP1. Oncol Lett 2021; 22:649. [PMID: 34386071 PMCID: PMC8298993 DOI: 10.3892/ol.2021.12910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 03/22/2021] [Indexed: 12/13/2022] Open
Abstract
Recently, miR-133a-3p has been identified as a marker for human colorectal cancer (CRC) and the association between miR-133a-3p and aquaporin 1 (AQP1) has been described in endothelial cells. However, the regulatory functions of the miR-133a-3p/AQP1 axis remain unclear in CRC. The present study analyzed the expression of miR-133a-3p and AQP1 in CRC tissues (n=56) and cell lines using reverse transcription-quantitative PCR and western blot analysis. The χ2 test was used to assess the associations between miR-133a-3p/AQP1 and clinicopathological features of patients with CRC. Next, the functional role of miR-133a-3p/AQP1 in CRC was evaluated in vitro by performing Cell Counting Kit-8 and Transwell assays. Moreover, the online software tool TargetScan7.1 was used to predict AQP1 as the target gene of miR-133a-3p, followed by validation using a luciferase reporter assay. The results showed that miR-133a-3p was significantly downregulated, while AQP1 was upregulated in CRC tissues and cell lines compared with corresponding controls. Clinically, it was demonstrated that miR-133a-3p/AQP1 expression was significantly associated with tumor TNM stage (P=0.020). Functional experiments indicated that miR-133a-3p-overexpression remarkably suppressed, while knockdown promoted, cell proliferation, migration and invasion in CRC cells. Mechanically, AQP1 was identified and validated as a target gene of miR-133a-3p in CRC cells. The expression level of AQP1 mRNA was not correlated with miR-133a-3p expression in CRC tissues. Furthermore, AQP1-knockdown induced, while overexpression reversed, the suppressive effects of miR-133a-3p on CRC cells. Taken together, these findings suggested that miR-133a-3p might be a tumor suppressor by suppressing cell proliferation, migration and invasion via targeting AQP1.
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Affiliation(s)
- Bin Kong
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Shipeng Zhao
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Xianwu Kang
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Bo Wang
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
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Luo Y, Yu M, Li P, Huang L, Wu J, Kong M, Li Y, Wu Z, Kang Z, Yi L, Yang Z. The Expression and Role of microRNA-133a in Plasma of Patients with Kawasaki Disease. Immunol Invest 2021; 51:826-838. [PMID: 33501869 DOI: 10.1080/08820139.2021.1877302] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Kawasaki disease (KD)), also known as mucocutaneous lymph node syndrome (MCLS), is an autoimmune and systemic vasculitis syndrome. Its etiology and pathogenesis are still unclear. microRNAs (miRNA), a novel class of small non-coding RNAs, regulate the expression of multiple protein-encoding genes at the post-transcriptional level. We intend to study the change of miRNA-133a in the plasma of patients with KD, explore the role of miRNA-133a on HUVEC and define the pathogenesis of vascular dysfunction in KD. miRNA-133a expression and the mRNA and protein expression of protein phosphatase 2 catalytic subunit alpha (PPP2CA) were assessed by RT-qPCR and Western blot, respectively. The PPP2CA mRNA 3'UTR was predicted to be the potential target of miRNA-133a by using the miRNA databases and verified by the luciferase assay. The plasmids of miRNA-133a mimics and inhibitors were transfected into HUVEC cells. The plasma soluble vascular endothelial cadherin (sVE-cadherin, the excised extracellular part of VE-cadherin) levels were investigated by ELISA. The results suggested that miRNA-133a was increased by 3.8 times in the acute KD group and by 2.7 times in the convalescent KD group compared with the control group (both P = .000). PPP2CA is the target gene of miRNA-133a and its expression was inhibited by miRNA-133a acting on PPP2CA mRNA 3'UTR (P = .013). The plasma sVE-cadherin levels in the acute KD groups were increased compared with the control group (P = .024). The ROC curve analysis showed that the expression of miRNA-133a segregate acute KD patients from convalescent KD patients and healthy children. Our results suggest that miRNA-133a might be a new biomarker for KD.
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Affiliation(s)
- Yeping Luo
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Meng Yu
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Pengzhu Li
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Lihua Huang
- Center for Medical Experiments, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Jiping Wu
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Min Kong
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Ying Li
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhixiang Wu
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhijuan Kang
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Lu Yi
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Zuocheng Yang
- Department of Pediatrics, the Third Xiangya Hospital, Central South University, Changsha, China
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Jiang Y, Wang C, Ma R, Zhao Y, Ma X, Wan J, Li C, Chen F, Fang F, Li M. Aquaporin 1 mediates early responses to osmotic stimuli in endothelial cells via the calmodulin pathway. FEBS Open Bio 2020; 11:75-84. [PMID: 33125833 PMCID: PMC7780103 DOI: 10.1002/2211-5463.13020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/30/2020] [Accepted: 09/07/2020] [Indexed: 01/19/2023] Open
Abstract
The aquaporins (AQPs) are a family of integral membrane proteins which play critical roles in controlling transcellular water movement in various tissues throughout the body. AQP1 helps mediate the cellular response to osmotic stress and tissue water permeability. However, the mechanism by which AQP1 mediates changes in cell volume is not completely clear. Here, we investigated how AQP1 responds to and controls cell volume upon osmotic stimuli during the early phase after the immediate response. Cells overexpressing AQP1 were exposed to hypotonic or hypertonic medium in the presence or absence of staurosporine or W-7 hydrochloride, and fluorescence imaging was performed at 0, 5, 10, and 15 min later. Osmotic stimuli induced redistribution of AQP1 into the cell membrane, hypotonic stimuli caused cell enlargement, and hypertonic stimuli induced a reduction in cell size, which was blocked by T157A/T239A mutations. Changes in cell size induced by osmotic stimuli were blocked by an antagonist of calmodulin kinase, W-7 hydrochloride, but not by the PKC inhibitor staurosporine. These results suggest that calmodulin kinase regulates AQP1 activity during the early response to osmotic stimuli.
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Affiliation(s)
- Yong Jiang
- Department of Laboratory Medicine, Jilin Medical University, China
| | - Chengqi Wang
- Department of Clinical Medicine, Jilin Medical University, China
| | - Rui Ma
- Department of Laboratory Medicine, Jilin Medical University, China
| | - Ying Zhao
- Department of Cardiology, Jilin Central Hospital, China
| | - Xinyue Ma
- Department of Laboratory Medicine, Jilin Medical University, China
| | - Jiaxin Wan
- Department of Laboratory Medicine, Jilin Medical University, China
| | - Chunxiang Li
- Department of Laboratory Medicine, Jilin Medical University, China
| | - Fanghao Chen
- Department of Clinical Medicine, Jilin Medical University, China
| | - Fang Fang
- Department of Laboratory Medicine, Jilin Medical University, China
| | - Mingguang Li
- Department of Laboratory Medicine, Jilin Medical University, China
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