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Danaher P, Hasle N, Nguyen ED, Hayward K, Rosenwasser N, Alpers CE, Reed RC, Okamura DM, Baxter SK, Jackson SW. Single cell spatial transcriptomic profiling of childhood-onset lupus nephritis reveals complex interactions between kidney stroma and infiltrating immune cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.09.566503. [PMID: 38014158 PMCID: PMC10680641 DOI: 10.1101/2023.11.09.566503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Children with systemic lupus erythematosus (SLE) are at increased risk of developing kidney disease, termed childhood-onset lupus nephritis (cLN). Single cell transcriptomics of dissociated kidney tissue has advanced our understanding of LN pathogenesis, but loss of spatial resolution prevents interrogation of in situ cellular interactions. Using a technical advance in spatial transcriptomics, we generated a spatially resolved, single cell resolution atlas of kidney tissue (>400,000 cells) from eight cLN patients and two controls. Annotated cells were assigned to 35 reference cell types, including major kidney subsets and infiltrating immune cells. Analysis of spatial distribution demonstrated that individual immune lineages localize to specific regions in cLN kidneys, including myeloid cells trafficking to inflamed glomeruli and B cells clustering within tubulointerstitial immune hotspots. Notably, gene expression varied as a function of tissue location, demonstrating how incorporation of spatial data can provide new insights into the immunopathogenesis of SLE. Alterations in immune phenotypes were accompanied by parallel changes in gene expression by resident kidney stromal cells. However, there was little correlation between histologic scoring of cLN disease activity and glomerular cell transcriptional signatures at the level of individual glomeruli. Finally, we identified modules of spatially-correlated gene expression with predicted roles in induction of inflammation and the development of tubulointerstitial fibrosis. In summary, single cell spatial transcriptomics allows unprecedented insights into the molecular heterogeneity of cLN, paving the way towards more targeted and personalized treatment approaches.
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Qiu Y, Lei C, Zeng J, Xie Y, Cao Y, Yuan Q, Su H, Zhang Z, Zhang C. Asparagine endopeptidase protects podocytes in adriamycin-induced nephropathy by regulating actin dynamics through cleaving transgelin. Mol Ther 2023; 31:3337-3354. [PMID: 37689970 PMCID: PMC10638058 DOI: 10.1016/j.ymthe.2023.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 08/04/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023] Open
Abstract
Focal segmental glomerulosclerosis (FSGS) is the most common glomerular disorder causing end-stage renal diseases worldwide. Central to the pathogenesis of FSGS is podocyte dysfunction, which is induced by diverse insults. However, the mechanism governing podocyte injury and repair remains largely unexplored. Asparagine endopeptidase (AEP), a lysosomal protease, regulates substrates by residue-specific cleavage or degradation. We identified the increased AEP expression in the primary proteinuria model which was induced by adriamycin (ADR) to mimic human FSGS. In vivo, global AEP knockout mice manifested increased injury-susceptibility of podocytes in ADR-induced nephropathy (ADRN). Podocyte-specific AEP knockout mice exhibited much more severe glomerular lesions and podocyte injury after ADR injection. In contrast, podocyte-specific augmentation of AEP in mice protected against ADRN. In vitro, knockdown and overexpression of AEP in human podocytes revealed the cytoprotection of AEP as a cytoskeleton regulator. Furthermore, transgelin, an actin-binding protein regulating actin dynamics, was cleaved by AEP, and, as a result, removed its actin-binding regulatory domain. The truncated transgelin regulated podocyte actin dynamics and repressed podocyte hypermotility, compared to the native full-length transgelin. Together, our data reveal a link between lysosomal protease AEP and podocyte cytoskeletal homeostasis, which suggests a potential therapeutic role for AEP in proteinuria disease.
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Affiliation(s)
- Yang Qiu
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China
| | - Chuntao Lei
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China
| | - Jieyu Zeng
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China
| | - Yaru Xie
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China
| | - Yiling Cao
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China
| | - Qian Yuan
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China
| | - Hua Su
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China
| | - Zhentao Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China.
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Schumacher A, Rookmaaker MB, Joles JA, Kramann R, Nguyen TQ, van Griensven M, LaPointe VLS. Defining the variety of cell types in developing and adult human kidneys by single-cell RNA sequencing. NPJ Regen Med 2021; 6:45. [PMID: 34381054 PMCID: PMC8357940 DOI: 10.1038/s41536-021-00156-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 07/22/2021] [Indexed: 01/14/2023] Open
Abstract
The kidney is among the most complex organs in terms of the variety of cell types. The cellular complexity of human kidneys is not fully unraveled and this challenge is further complicated by the existence of multiple progenitor pools and differentiation pathways. Researchers disagree on the variety of renal cell types due to a lack of research providing a comprehensive picture and the challenge to translate findings between species. To find an answer to the number of human renal cell types, we discuss research that used single-cell RNA sequencing on developing and adult human kidney tissue and compares these findings to the literature of the pre-single-cell RNA sequencing era. We find that these publications show major steps towards the discovery of novel cell types and intermediate cell stages as well as complex molecular signatures and lineage pathways throughout development. The variety of cell types remains variable in the single-cell literature, which is due to the limitations of the technique. Nevertheless, our analysis approaches an accumulated number of 41 identified cell populations of renal lineage and 32 of non-renal lineage in the adult kidney, and there is certainly much more to discover. There is still a need for a consensus on a variety of definitions and standards in single-cell RNA sequencing research, such as the definition of what is a cell type. Nevertheless, this early-stage research already proves to be of significant impact for both clinical and regenerative medicine, and shows potential to enhance the generation of sophisticated in vitro kidney tissue.
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Affiliation(s)
- A Schumacher
- MERLN Institute for Technology-Inspired Regenerative Medicine, Department of Cell Biology-Inspired Tissue Engineering, Maastricht University, Maastricht, The Netherlands
| | - M B Rookmaaker
- Department of Nephrology, University Medical Center, Utrecht, The Netherlands
| | - J A Joles
- Department of Nephrology, University Medical Center, Utrecht, The Netherlands
| | - R Kramann
- Institute of Experimental Medicine and Systems Biology, RWTH Aachen, Aachen, Germany
- Department of Internal Medicine, Nephrology and Transplantation, Erasmus Medical Center, Rotterdam, The Netherlands
| | - T Q Nguyen
- Department of Pathology, University Medical Center, Utrecht, The Netherlands
| | - M van Griensven
- MERLN Institute for Technology-Inspired Regenerative Medicine, Department of Cell Biology-Inspired Tissue Engineering, Maastricht University, Maastricht, The Netherlands
| | - V L S LaPointe
- MERLN Institute for Technology-Inspired Regenerative Medicine, Department of Cell Biology-Inspired Tissue Engineering, Maastricht University, Maastricht, The Netherlands.
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Basov A, Fedulova L, Vasilevskaya E, Trofimova E, Murashova N, Dzhimak S. Sus Scrofa immune tissues as a new source of bioactive substances for skin wound healing. Saudi J Biol Sci 2021; 28:1826-1834. [PMID: 33732068 PMCID: PMC7938156 DOI: 10.1016/j.sjbs.2020.12.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/09/2020] [Accepted: 12/14/2020] [Indexed: 11/30/2022] Open
Abstract
Influence of a new protein-peptide complex on promoting skin wound healing in male BALB/c mice was studied. Protein-peptide complex, extracted from Sus scrofa immune organs, was percutaneously administered using two methods: by lecithin gel-like liquid crystals and by liquid microemulsion. On the fifth day, wound closure in mice with a linear wound model become faster in group (less 2 days comparison to other ones), which was treated with lecithin liquid crystals carrying the protein-peptide complex. This promoting healing can be caused by resorption of bioactive high-molecular compounds the animal skin. In mice with the linear wound model, the tensile strength of the scars were respectively higher both in mice, treated using lecithin liquid crystals with protein-peptide complex, and in mice, treated using microemulsion containing protein-peptide complex, by 215.4% and 161.5% relative to the animals, which did not receive bioactive substances for wound treatment. It was associated with the regeneratory effects of tissue- and species-specific protein-peptide complexes, including α-thymosin Sus scrofa (C3VVV8_PIG, m/z 3802.8) and other factors, which were described as parts of the new extracted complex. This reveals that percutaneous administration of the complex reliably activates local regenerative processes in animals.
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Affiliation(s)
- Alexandr Basov
- Kuban State Medical University, Mitrophana Sedina Street, Krasnodar 350063, Russian Federation.,Kuban State University, Stavropolskaya Street, 149, Krasnodar 350040, Russian Federation
| | - Liliya Fedulova
- The V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Talalikhina Street, 26, Moscow 109316, Russian Federation
| | - Ekaterina Vasilevskaya
- The V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Talalikhina Street, 26, Moscow 109316, Russian Federation
| | - Ekaterina Trofimova
- Mendeleev University of Chemical Technology of Russia, Miusskaya Square, 9, Moscow 125047, Russian Federation
| | - Nataliya Murashova
- Mendeleev University of Chemical Technology of Russia, Miusskaya Square, 9, Moscow 125047, Russian Federation
| | - Stepan Dzhimak
- Kuban State University, Stavropolskaya Street, 149, Krasnodar 350040, Russian Federation.,The V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Talalikhina Street, 26, Moscow 109316, Russian Federation
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Zhong W, Sun B, Ruan H, Yang G, Qian B, Cao H, He L, Fan Y, Roberts AG, Liu X, Hu X, Liang Y, Ye Q, Yin T, Wang B, Yang C, Sun T, Zhou H. Deglycosylated Azithromycin Targets Transgelin to Enhance Intestinal Smooth Muscle Function. iScience 2020; 23:101464. [PMID: 32889431 PMCID: PMC7479357 DOI: 10.1016/j.isci.2020.101464] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/21/2020] [Accepted: 08/12/2020] [Indexed: 01/21/2023] Open
Abstract
Azithromycin (AZM) has been widely used as an antibacterial drug for many years. It has also been used to treat delayed gastric emptying. However, it exerts several side effects. We found that deglycosylated AZM (Deg-AZM or CP0119), an AZM metabolite, is a positively strong intestinal agonist that may result in the intestinal mobility experienced by patients after AZM administration. We confirmed that Deg-AZM can function strongly on intestinal peristalsis and identified transgelin as its potential molecular target. Furthermore, our pharmacological studies showed that the binding of Deg-AZM to transgelin enhanced the contractility of intestinal smooth muscle cells by facilitating the assembly of actin filaments into tight bundles and stress fibers. Specifically, Deg-AZM promoted intestinal peristaltic activity in wild-type mice but not in transgelin (-/-) mice. Moreover, Deg-AZM did not exert antibacterial activity and did not disrupt intestinal flora. Thus, Deg-AZM may become a potential drug for slow-transit constipation treatment.
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Affiliation(s)
- Weilong Zhong
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin 300052, China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin 300450, China
| | - Bo Sun
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin 300450, China
| | - Hao Ruan
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Guang Yang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Baoxin Qian
- Department of Gastroenterology and Hepatology, Tianjin Key Laboratory of Artificial Cells, Tianjin Institute of Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300041, China
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin 300052, China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin 300450, China
| | - Lingfei He
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Yunjing Fan
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Arthur G. Roberts
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, Athens, GA 30602, USA
| | - Xiang Liu
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin 300052, China
| | - Xuejiao Hu
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Yuan Liang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Qing Ye
- Department of Gastroenterology and Hepatology, Tianjin Key Laboratory of Artificial Cells, Tianjin Institute of Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300041, China
| | - Tingting Yin
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
| | - Bangmao Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin 300052, China
| | - Cheng Yang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin 300450, China
| | - Tao Sun
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin 300450, China
| | - Honggang Zhou
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300350, China
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin 300450, China
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Torres-Salido MT, Sanchis M, Solé C, Moliné T, Vidal M, Vidal X, Solà A, Hotter G, Ordi-Ros J, Cortés-Hernández J. Urinary Neuropilin-1: A Predictive Biomarker for Renal Outcome in Lupus Nephritis. Int J Mol Sci 2019; 20:ijms20184601. [PMID: 31533337 PMCID: PMC6769814 DOI: 10.3390/ijms20184601] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/05/2019] [Accepted: 09/10/2019] [Indexed: 12/23/2022] Open
Abstract
At present, Lupus Nephritis (LN) is still awaiting a biomarker to better monitor disease activity, guide clinical treatment, and predict a patient’s long-term outcome. In the last decade, novel biomarkers have been identified to monitor the disease, but none have been incorporated into clinical practice. The transmembrane receptor neuropilin-1 (NRP-1) is highly expressed by mesangial cells and its genetic deletion results in proteinuric disease and glomerulosclerosis. NRP-1 is increased in kidney biopsies of LN. In this work we were interested in determining whether urinary NRP-1 levels could be a biomarker of clinical response in LN. Our results show that patients with active LN have increased levels of urinary NRP-1. When patients were divided according to clinical response, responders displayed higher urinary and tissue NRP-1 levels at the time of renal biopsy. Areas under the receiver operating characteristic curve, comparing baseline creatinine, proteinuria, urinary NRP-1, and VEGFA protein levels, showed NRP-1 to be an independent predictor for clinical response. In addition, in vitro studies suggest that NRP-1could promote renal recovery through endothelial proliferation and migration, mesangial migration and local T cell cytotoxicity. Based on these results, NRP-1 may be used as an early prognostic biomarker in LN.
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Affiliation(s)
| | - Mireia Sanchis
- Hospital Universitari Vall d'Hebron, Vall d'Hebron Research Institute (VHIR), Rheumatology research group, Lupus Unit, 08035 Barcelona, Spain.
| | - Cristina Solé
- Hospital Universitari Vall d'Hebron, Vall d'Hebron Research Institute (VHIR), Rheumatology research group, Lupus Unit, 08035 Barcelona, Spain.
| | - Teresa Moliné
- Hospital Universitari Vall d'Hebron, Department of Renal Pathology, 08035 Barcelona, Spain.
| | - Marta Vidal
- Hospital Universitari Vall d'Hebron, Department of Renal Pathology, 08035 Barcelona, Spain.
| | - Xavier Vidal
- Clinical Pharmacology Service, Department of Pharmacology, Therapeutics and Toxicology, Fundació Institut Català de Farmacologia, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain.
| | - Anna Solà
- Department of Experimental Pathology, IIBB-CSIC-IDIBAPS, 08036 Barcelona, Spain.
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 08036 Barcelona, Spain.
| | - Georgina Hotter
- Department of Experimental Pathology, IIBB-CSIC-IDIBAPS, 08036 Barcelona, Spain.
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 08036 Barcelona, Spain.
| | - Josep Ordi-Ros
- Hospital Universitari Vall d'Hebron, Vall d'Hebron Research Institute (VHIR), Rheumatology research group, Lupus Unit, 08035 Barcelona, Spain.
| | - Josefina Cortés-Hernández
- Hospital Universitari Vall d'Hebron, Vall d'Hebron Research Institute (VHIR), Rheumatology research group, Lupus Unit, 08035 Barcelona, Spain.
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Lee EJ, Kang MK, Kim YH, Kim DY, Oh H, Kim SI, Oh SY, Kang YH. Dietary Chrysin Suppresses Formation of Actin Cytoskeleton and Focal Adhesion in AGE-Exposed Mesangial Cells and Diabetic Kidney: Role of Autophagy. Nutrients 2019; 11:E127. [PMID: 30634545 PMCID: PMC6705957 DOI: 10.3390/nu11010127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 12/16/2018] [Accepted: 01/04/2019] [Indexed: 12/13/2022] Open
Abstract
Advanced glycation end products (AGE) play a causative role in the development of aberrant phenotypes of intraglomerular mesangial cells, contributing to acute/chronic glomerulonephritis. The aim of this study was to explore mechanistic effects of the flavonoid chrysin present in bee propolis and herbs on actin dynamics, focal adhesion, and the migration of AGE-exposed mesangial cells. The in vitro study cultured human mesangial cells exposed to 33 mM glucose and 100 μg/mL AGE-bovine serum albumin (AGE-BSA) for up to 5 days in the absence and presence of 1⁻20 μM chrysin. The in vivo study employed db/db mice orally administrated for 10 weeks with 10 mg/kg chrysin. The presence of ≥10 μM chrysin attenuated mesangial F-actin induction and bundle formation enhanced by AGE. Chrysin reduced the mesangial induction of α-smooth muscle actin (α-SMA) by glucose, and diminished the tissue α-SMA level in diabetic kidneys, indicating its blockade of mesangial proliferation. The treatment of chrysin inhibited the activation of vinculin and paxillin and the induction of cortactin, ARP2/3, fascin-1, and Ena/VASP-like protein in AGE-exposed mesangial cells. Oral administration of chrysin diminished tissue levels of cortactin and fascin-1 elevated in diabetic mouse kidneys. Mesangial cell motility was enhanced by AGE, which was markedly attenuated by adding chrysin to cells. On the other hand, chrysin dampened the induction of autophagy-related genes of beclin-1, LC3 I/II, Atg3, and Atg7 in mesangial cells exposed to AGE and in diabetic kidneys. Furthermore, chrysin reduced the mTOR activation in AGE-exposed mesangial cells and diabetic kidneys. The induction of mesangial F-actin, cortactin, and fascin-1 by AGE was deterred by the inhibition of autophagy and mTOR. Thus, chrysin may encumber diabetes-associated formation of actin bundling and focal adhesion and mesangial cell motility through disturbing autophagy and mTOR pathway.
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Affiliation(s)
- Eun-Jung Lee
- Department of Food and Nutrition, Hallym University, Chuncheon, Kangwon-do 24252, Korea.
| | - Min-Kyung Kang
- Department of Food and Nutrition, Hallym University, Chuncheon, Kangwon-do 24252, Korea.
| | - Yun-Ho Kim
- Department of Food and Nutrition, Hallym University, Chuncheon, Kangwon-do 24252, Korea.
| | - Dong Yeon Kim
- Department of Food and Nutrition, Hallym University, Chuncheon, Kangwon-do 24252, Korea.
| | - Hyeongjoo Oh
- Department of Food and Nutrition, Hallym University, Chuncheon, Kangwon-do 24252, Korea.
| | - Soo-Il Kim
- Department of Food and Nutrition, Hallym University, Chuncheon, Kangwon-do 24252, Korea.
| | - Su Yeon Oh
- Department of Food and Nutrition, Hallym University, Chuncheon, Kangwon-do 24252, Korea.
| | - Young-Hee Kang
- Department of Food and Nutrition, Hallym University, Chuncheon, Kangwon-do 24252, Korea.
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Huang L, Li L, Yang T, Li W, Song L, Meng X, Gu Q, Xiong C, He J. Transgelin as a potential target in the reversibility of pulmonary arterial hypertension secondary to congenital heart disease. J Cell Mol Med 2018; 22:6249-6261. [PMID: 30338626 PMCID: PMC6237561 DOI: 10.1111/jcmm.13912] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/13/2018] [Accepted: 08/20/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The reversibility of pulmonary arterial hypertension (PAH) in congenital heart disease (CHD) is of great importance for the operability of CHD. Proteomics analysis found that transgelin was significantly up-regulated in the lung tissue of CHD-PAH patients, especially in the irreversible group. However, how exactly it participated in CHD-PAH development is unknown. METHODS Immunohistochemical staining and Western blot were performed for further qualitative and quantitative analysis of transgelin in the lung tissues of CHD-PAH patients. The mechanism of transgelin in CHD-PAH development was explored in vitro. Primary human pulmonary arterial smooth muscle cells (hPASMCs) were cultured and infected with TAGLN siRNA or TAGLN lentiviral vector. Cell morphologic change (Coomassie Brilliant Blue staining), proliferation (cell count and EdU assay), apoptosis (terminal deoxyribonucleotidyl transferase mediated dUTP nick end labeling assay and Annexin-V flow cytometry) and migration (transwell) were evaluated following the cell treatment. The mRNA and protein expression levels were detected in real-time PCR and Western blot. RESULTS In line with the proteomic findings, transgelin was obviously expressed in PASMC of the middle pulmonary arterioles, especially in the irreversible PAH group. Also, transgelin expression showed positive relation with pathological grading. Experiment in vitro demonstrated that transgelin overexpression promoted PASMC proliferation and migration, strengthened cytoskeleton and was accompanied by increased expression of synthetic phenotype markers (osteopontin, proliferating cell nuclear antigen) and anti-apoptotic protein (bcl-2). On the other hand, suppression of transgelin expression activated PASMC apoptosis, reducing cell proliferation and migration. CONCLUSIONS Transgelin may be a potential target in the development of irreversible CHD-PAH through inducing PASMC phenotype change, proliferation, migration and reducing cell apoptosis.
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Affiliation(s)
- Li Huang
- Center of Pulmonary Vascular DiseaseState Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Li Li
- Department of PathologyState Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Tao Yang
- Center of Pulmonary Vascular DiseaseState Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Wen Li
- Center of Pulmonary Vascular DiseaseState Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Li Song
- State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xianmin Meng
- State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Qing Gu
- Center of Pulmonary Vascular DiseaseState Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Changming Xiong
- Center of Pulmonary Vascular DiseaseState Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Jianguo He
- Center of Pulmonary Vascular DiseaseState Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
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Menon R, Otto EA, Kokoruda A, Zhou J, Zhang Z, Yoon E, Chen YC, Troyanskaya O, Spence JR, Kretzler M, Cebrián C. Single-cell analysis of progenitor cell dynamics and lineage specification in the human fetal kidney. Development 2018; 145:145/16/dev164038. [PMID: 30166318 PMCID: PMC6124540 DOI: 10.1242/dev.164038] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 07/30/2018] [Indexed: 12/11/2022]
Abstract
The mammalian kidney develops through reciprocal interactions between the ureteric bud and the metanephric mesenchyme to give rise to the entire collecting system and the nephrons. Most of our knowledge of the developmental regulators driving this process arises from the study of gene expression and functional genetics in mice and other animal models. In order to shed light on human kidney development, we have used single-cell transcriptomics to characterize gene expression in different cell populations, and to study individual cell dynamics and lineage trajectories during development. Single-cell transcriptome analyses of 6414 cells from five individual specimens identified 11 initial clusters of specific renal cell types as defined by their gene expression profile. Further subclustering identifies progenitors, and mature and intermediate stages of differentiation for several renal lineages. Other lineages identified include mesangium, stroma, endothelial and immune cells. Novel markers for these cell types were revealed in the analysis, as were components of key signaling pathways driving renal development in animal models. Altogether, we provide a comprehensive and dynamic gene expression profile of the developing human kidney at the single-cell level. Summary: New markers for specific cell types in the developing human kidney are identified and computational approaches infer developmental trajectories and interrogate the complex network of signaling pathways and cellular transitions.
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Affiliation(s)
- Rajasree Menon
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Edgar A Otto
- Department of Internal Medicine, Division of Nephrology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Austin Kokoruda
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jian Zhou
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA.,Graduate Program in Quantitative and Computational Biology, Princeton University, Princeton, NJ 08544, USA
| | - Zidong Zhang
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA.,Graduate Program in Quantitative and Computational Biology, Princeton University, Princeton, NJ 08544, USA
| | - Euisik Yoon
- Department of Electrical Engineering and Computer Science, Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yu-Chih Chen
- Department of Electrical Engineering and Computer Science, Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Olga Troyanskaya
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA.,Flatiron Institute, Simons Foundation, New York, NY 10010, USA.,Department of Computer Science, Princeton University, Princeton, NJ
| | - Jason R Spence
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, MI 48109, USA .,Department of Cell and Developmental Biology, Division of Gastroenterology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Matthias Kretzler
- Department of Internal Medicine, Division of Nephrology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Cristina Cebrián
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, MI 48109, USA
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10
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Czerniecki SM, Cruz NM, Harder JL, Menon R, Annis J, Otto EA, Gulieva RE, Islas LV, Kim YK, Tran LM, Martins TJ, Pippin JW, Fu H, Kretzler M, Shankland SJ, Himmelfarb J, Moon RT, Paragas N, Freedman BS. High-Throughput Screening Enhances Kidney Organoid Differentiation from Human Pluripotent Stem Cells and Enables Automated Multidimensional Phenotyping. Cell Stem Cell 2018; 22:929-940.e4. [PMID: 29779890 PMCID: PMC5984728 DOI: 10.1016/j.stem.2018.04.022] [Citation(s) in RCA: 293] [Impact Index Per Article: 48.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 02/05/2018] [Accepted: 04/24/2018] [Indexed: 12/21/2022]
Abstract
Organoids derived from human pluripotent stem cells are a potentially powerful tool for high-throughput screening (HTS), but the complexity of organoid cultures poses a significant challenge for miniaturization and automation. Here, we present a fully automated, HTS-compatible platform for enhanced differentiation and phenotyping of human kidney organoids. The entire 21-day protocol, from plating to differentiation to analysis, can be performed automatically by liquid-handling robots, or alternatively by manual pipetting. High-content imaging analysis reveals both dose-dependent and threshold effects during organoid differentiation. Immunofluorescence and single-cell RNA sequencing identify previously undetected parietal, interstitial, and partially differentiated compartments within organoids and define conditions that greatly expand the vascular endothelium. Chemical modulation of toxicity and disease phenotypes can be quantified for safety and efficacy prediction. Screening in gene-edited organoids in this system reveals an unexpected role for myosin in polycystic kidney disease. Organoids in HTS formats thus establish an attractive platform for multidimensional phenotypic screening.
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Affiliation(s)
- Stefan M Czerniecki
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA; Kidney Research Institute, University of Washington School of Medicine, Seattle, WA 98109, USA; Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Nelly M Cruz
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA; Kidney Research Institute, University of Washington School of Medicine, Seattle, WA 98109, USA; Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Jennifer L Harder
- Department of Internal Medicine, Division of Nephrology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Rajasree Menon
- Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - James Annis
- Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Edgar A Otto
- Department of Internal Medicine, Division of Nephrology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Ramila E Gulieva
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA; Kidney Research Institute, University of Washington School of Medicine, Seattle, WA 98109, USA; Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Laura V Islas
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA; Kidney Research Institute, University of Washington School of Medicine, Seattle, WA 98109, USA; Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Yong Kyun Kim
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA; Kidney Research Institute, University of Washington School of Medicine, Seattle, WA 98109, USA; Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Linh M Tran
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA; Kidney Research Institute, University of Washington School of Medicine, Seattle, WA 98109, USA; Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA; Department of Medicine, Division of Hematology, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Timothy J Martins
- Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Jeffrey W Pippin
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Hongxia Fu
- Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA; Department of Medicine, Division of Hematology, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Matthias Kretzler
- Department of Internal Medicine, Division of Nephrology, University of Michigan Medical School, Ann Arbor, MI 48109, USA; Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Stuart J Shankland
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Jonathan Himmelfarb
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA; Kidney Research Institute, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Randall T Moon
- Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA; Department of Pharmacology, University of Washington School of Medicine and Howard Hughes Medical Institute, Seattle, WA 98109, USA
| | - Neal Paragas
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA
| | - Benjamin S Freedman
- Department of Medicine, Division of Nephrology, University of Washington School of Medicine, Seattle, WA 98109, USA; Kidney Research Institute, University of Washington School of Medicine, Seattle, WA 98109, USA; Institute for Stem Cell and Regenerative Medicine and Quellos High Throughput Screening Core, University of Washington School of Medicine, Seattle, WA 98109, USA; Department of Pathology, University of Washington School of Medicine, Seattle, WA 98109, USA.
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11
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Bartlett CS, Scott RP, Carota IA, Wnuk ML, Kanwar YS, Miner JH, Quaggin SE. Glomerular mesangial cell recruitment and function require the co-receptor neuropilin-1. Am J Physiol Renal Physiol 2017; 313:F1232-F1242. [PMID: 28835419 DOI: 10.1152/ajprenal.00311.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/08/2017] [Accepted: 08/16/2017] [Indexed: 01/11/2023] Open
Abstract
Proteinuria has been reported in cancer patients receiving agents that target the transmembrane receptor neuropilin-1 (Nrp1) suggesting potential adverse effects on glomerular function. Here we show that Nrp1 is highly expressed by mesangial cells and that genetic deletion of the Nrp1 gene from PDGF receptor-β+ mesangial cells results in proteinuric disease and glomerulosclerosis, leading to renal failure and death within 6 wk of age in mice. The major defect is a failure of mesangial cell migration that is required to establish the mature glomerular tuft. In vitro data show that the potent chemotactic effect of PDGFB is lost in Nrp1-deficient mesangial cells. Biochemical analyses reveal that Nrp1 is required for PDGFB-dependent phosphorylation of p130 Crk-associated substrate (p130Cas), a large-scaffold molecule that is involved in motility of other cell types. In stark contrast, matrix adhesion and activation of ERK and Akt, which mediate proliferation of mesangial cells in response to PDGFB, are unaffected by the absence of Nrp1. Taken together, these results identify a critical cell-autonomous role for Nrp1 in the migratory behavior of mesangial cells and may help explain the renal effects that occur in patients receiving Nrp1-inhibitory drugs.
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Affiliation(s)
- Christina S Bartlett
- Division of Nephrology and Hypertension and Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Rizaldy P Scott
- Division of Nephrology and Hypertension and Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois.,Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada; and
| | - Isabel Anna Carota
- Division of Nephrology and Hypertension and Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Monika L Wnuk
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada; and
| | - Yashpal S Kanwar
- Division of Nephrology and Hypertension and Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Jeffrey H Miner
- Division of Nephrology, Washington University School of Medicine, St. Louis, Missouri
| | - Susan E Quaggin
- Division of Nephrology and Hypertension and Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois; .,Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada; and
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12
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Siiki A, Jesenofsky R, Löhr M, Nordback I, Kellomäki M, Gröhn H, Mikkonen J, Sand J, Laukkarinen J. Biodegradable biliary stents have a different effect than covered metal stents on the expression of proteins associated with tissue healing in benign biliary strictures. Scand J Gastroenterol 2016; 51:880-5. [PMID: 27003149 DOI: 10.3109/00365521.2016.1156153] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Benign biliary strictures (BBS) are primarily treated endoscopically with covered self-expandable metal stents (CSEMS). Biodegradable biliary stents (BDBS) may be the future of endoscopic therapy of BBS. The aim was to assess the expression of proteins related to tissue healing in BBS compared with the intact bile duct (BD), and to study the protein expression after therapy with CSEMS or BDBS. METHODS Pigs with ischemic BBS were endoscopically treated either with BDBS or CSEMS. Samples were harvested from pigs with intact BD (n = 5), untreated BBS (n = 5), and after six months of therapy with BDBS (n = 4) or CSEMS (n = 5) with subsequent histologic analysis. Two-dimensional electrophoresis with protein identification was performed to evaluate protein expression patterns. RESULTS In BBS, the expression of galectin-2 and annexin-A4 decreased, compared to intact BD. Treatment with biodegradable stents normalized galectin-2 level; with CSEMS therapy it remained low. Transgelin expression of intact BD and BBS remained low after BDBS treatment but increased after CSEMS therapy. Histologic analysis did not show unwanted foreign body reaction or hyperplasia in the BD in either group. CONCLUSIONS The expression of proteins related to tissue healing in BBS is different after treatment with biodegradable stents and CSEMS. Treatment with biodegradable stents may bring protein expression towards what is seen in intact BD. BDBS seem to have a good biocompatibility.
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Affiliation(s)
- Antti Siiki
- a Department of Gastroenterology and Alimentary Tract Surgery , Tampere University Hospital , Tampere , Finland
| | - Ralf Jesenofsky
- b Department of Medicine II , University of Heidelberg , Mannheim , Germany
| | - Matthias Löhr
- c Karolinska University Hospital, Gastrocentrum , Huddinge , Sweden
| | - Isto Nordback
- a Department of Gastroenterology and Alimentary Tract Surgery , Tampere University Hospital , Tampere , Finland
| | - Minna Kellomäki
- d Biomaterials and Tissue Engineering Group, BioMediTech and Department of Electronics and Communications Engineering , Tampere University of Technology , Tampere , Finland
| | - Heidi Gröhn
- e Department of Clinical Physiology and Nuclear Medicine , Kuopio University Hospital , Kuopio , Finland
| | - Joonas Mikkonen
- d Biomaterials and Tissue Engineering Group, BioMediTech and Department of Electronics and Communications Engineering , Tampere University of Technology , Tampere , Finland
| | - Juhani Sand
- a Department of Gastroenterology and Alimentary Tract Surgery , Tampere University Hospital , Tampere , Finland
| | - Johanna Laukkarinen
- a Department of Gastroenterology and Alimentary Tract Surgery , Tampere University Hospital , Tampere , Finland
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13
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Tsurumi H, Kurihara H, Miura K, Tanego A, Ohta Y, Igarashi T, Oka A, Horita S, Hattori M, Harita Y. Afadin is localized at cell-cell contact sites in mesangial cells and regulates migratory polarity. J Transl Med 2016; 96:49-59. [PMID: 26568295 PMCID: PMC5399166 DOI: 10.1038/labinvest.2015.133] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 08/14/2015] [Accepted: 10/17/2015] [Indexed: 01/01/2023] Open
Abstract
In kidney glomeruli, mesangial cells provide structural support to counteract for expansile forces caused by pressure gradients and to regulate the blood flow. Glomerular injury results in proliferation and aberrant migration of mesangial cells, which is the pathological characteristic of mesangial proliferative glomerulonephritis. To date, molecular changes that occur in mesangial cells during glomerular injury and their association with the pathogenesis of glomerulonephritis remain largely unclear. During the search for proteins regulating the morphology of mesangial cells, we found that afadin, a multi-domain F-actin-binding protein, and β-catenin are expressed in cell-cell contact sites of cultured mesangial cells and mesangial cells in vivo. Afadin forms a protein complex with β-catenin in glomeruli and in cultured mesangial cells. Protein expression of afadin at mesangial intercellular junctions was dramatically decreased in mesangial proliferative nephritis in rats and in patients with glomerulonephritis. RNA interference-mediated depletion of afadin in cultured mesangial cells did not affect proliferation rate but resulted in delayed directional cell migration. Furthermore, reorientation of the Golgi complex at the leading edges of migrating cells in wound-healing assay was disturbed in afadin-depleted cells, suggesting the role of aberrant migratory polarity in the pathogenesis of proliferative glomerulonephritis. These data shed light on glomerulonephritis-associated changes in cell-cell adhesion between mesangial cells, which might be related to migratory polarity.
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Affiliation(s)
- Haruko Tsurumi
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hidetake Kurihara
- Department of Anatomy, Juntendo University School of Medicine, Tokyo, Japan
| | - Kenichiro Miura
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Atsushi Tanego
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasutaka Ohta
- Division of Cell Biology, Department of Biosciences, School of Science, Kitasato University, Kanagawa, Japan
| | | | - Akira Oka
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shigeru Horita
- Department of Pediatric Nephrology, Tokyo Women's Medical University, Tokyo, Japan
| | - Motoshi Hattori
- Department of Pediatric Nephrology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yutaka Harita
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan,Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan. E-mail:
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14
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Hsia CW, Ho MY, Shui HA, Tsai CB, Tseng MJ. Analysis of dermal papilla cell interactome using STRING database to profile the ex vivo hair growth inhibition effect of a vinca alkaloid drug, colchicine. Int J Mol Sci 2015; 16:3579-98. [PMID: 25664862 PMCID: PMC4346914 DOI: 10.3390/ijms16023579] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/03/2015] [Indexed: 12/28/2022] Open
Abstract
Dermal papillae (DPs) control the formation of hair shafts. In clinical settings, colchicine (CLC) induces patients' hair shedding. Compared to the control, the ex vivo hair fiber elongation of organ cultured vibrissa hair follicles (HFs) declined significantly after seven days of CLC treatment. The cultured DP cells (DPCs) were used as the experimental model to study the influence of CLC on the protein dynamics of DPs. CLC could alter the morphology and down-regulate the expression of alkaline phosphatase (ALP), the marker of DPC activity, and induce IκBα phosphorylation of DPCs. The proteomic results showed that CLC modulated the expression patterns (fold>2) of 24 identified proteins, seven down-regulated and 17 up-regulated. Most of these proteins were presumably associated with protein turnover, metabolism, structure and signal transduction. Protein-protein interactions (PPI) among these proteins, established by Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) database, revealed that they participate in protein metabolic process, translation, and energy production. Furthermore, ubiquitin C (UbC) was predicted to be the controlling hub, suggesting the involvement of ubiquitin-proteasome system in modulating the pathogenic effect of CLC on DPC.
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Affiliation(s)
- Ching-Wu Hsia
- Institute of Molecular Biology and Department of Life Science, National Chung Cheng University, Chia-yi 621, Taiwan.
| | - Ming-Yi Ho
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.
| | - Hao-Ai Shui
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei 114, Taiwan.
| | - Chong-Bin Tsai
- Institute of Molecular Biology and Department of Life Science, National Chung Cheng University, Chia-yi 621, Taiwan.
- Department of Ophthalmology, Chia-yi Christian Hospital, Chia-yi 600, Taiwan.
| | - Min-Jen Tseng
- Institute of Molecular Biology and Department of Life Science, National Chung Cheng University, Chia-yi 621, Taiwan.
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15
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Naito S, Pippin JW, Shankland SJ. The glomerular parietal epithelial cell's responses are influenced by SM22 alpha levels. BMC Nephrol 2014; 15:174. [PMID: 25376243 PMCID: PMC4247743 DOI: 10.1186/1471-2369-15-174] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 10/22/2014] [Indexed: 12/17/2022] Open
Abstract
Background Studies have shown in several diseases initially affecting podocytes, that the neighboring glomerular parietal epithelial cells (PECs) are secondarily involved. The PEC response might be reparative under certain circumstances, yet injurious under others. The factors governing these are not well understood. We have shown that SM22α, an actin-binding protein considered a marker of smooth muscle differentiation, is upregulated in podocytes and PECs in several models of podocyte disease. However, the impact of SM22α levels on PECs is not known. Methods Experimental glomerular disease, characterized by primary podocyte injury, was induced in aged-matched SM22α +/+ and SM22α -/- mice by intraperitoneal injection of sheep anti-rabbit glomeruli antibody. Immunostaining methods were employed on days 7 and 14 of disease. Results The number of PEC transition cells, defined as cells co-expressing a PEC protein (PAX2) and podocyte protein (Synaptopodin) was higher in diseased SM22α -/- mice compared with SM22α +/+ mice. WT1 staining along Bowman’s capsule is higher in diseased SM22α -/- mice. This was accompanied by increased PEC proliferation (measured by ki-67 staining), and an increase in immunostaining for the progenitor marker NCAM, in a subpopulation of PECs in diseased SM22α -/- mice. In addition, immunostaining for vimentin and alpha smooth muscle actin, markers of epithelial-to-mesenchymal transition (EMT), was lower in diseased SM22α -/- mice compared to diseased SM22α+/+ mice. Conclusion SM22α levels may impact how PECs respond following a primary podocyte injury in experimental glomerular disease. Absent/lower levels favor an increase in PEC transition cells and PECs expressing a progenitor marker, and a lower EMT rate compared to SM22α +/+ mice, where SM22 levels are markedly increased in PECs.
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Affiliation(s)
| | | | - Stuart J Shankland
- Division of Nephrology Department of Medicine, University of Washington School of Medicine, Box 356521, 1959 NE Pacific St,, Seattle, WA 98195-6521, USA.
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16
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Ozawa S, Ueda S, Li Y, Mori K, Asanuma K, Yanagita M, Nakagawa T. Fatty acid binding protein 3 as a potential mediator for diabetic nephropathy in eNOS deficient mouse. Biochem Biophys Res Commun 2014; 454:531-6. [DOI: 10.1016/j.bbrc.2014.10.121] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 10/24/2014] [Indexed: 10/24/2022]
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17
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Finne K, Vethe H, Skogstrand T, Leh S, Dahl TD, Tenstad O, Berven FS, Reed RK, Vikse BE. Proteomic analysis of formalin-fixed paraffin-embedded glomeruli suggests depletion of glomerular filtration barrier proteins in two-kidney, one-clip hypertensive rats. Nephrol Dial Transplant 2014; 29:2217-27. [PMID: 25129444 PMCID: PMC4240179 DOI: 10.1093/ndt/gfu268] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background It is well known that hypertension may cause glomerular damage, but the molecular mechanisms involved are still incompletely understood. Methods In the present study, we used formalin-fixed paraffin-embedded (FFPE) tissue to investigate changes in the glomerular proteome in the non-clipped kidney of two-kidney one-clip (2K1C) hypertensive rats, with special emphasis on the glomerular filtration barrier. 2K1C hypertension was induced in 6-week-old Wistar Hannover rats (n = 6) that were sacrificed 23 weeks later and compared with age-matched sham-operated controls (n = 6). Tissue was stored in FFPE tissue blocks and later prepared on tissue slides for laser microdissection. Glomeruli without severe morphological damage were isolated, and the proteomes were analysed using liquid chromatography–tandem mass spectrometry. Results 2K1C glomeruli showed reduced abundance of proteins important for slit diaphragm complex, such as nephrin, podocin and neph1. The podocyte foot process had a pattern of reduced abundance of transmembrane proteins but unchanged abundances of the podocyte cytoskeletal proteins synaptopodin and α-actinin-4. Lower abundance of important glomerular basement membrane proteins was seen. Possible glomerular markers of damage with increased abundance in 2K1C were transgelin, desmin and acyl-coenzyme A thioesterase 1. Conclusions Microdissection and tandem mass spectrometry could be used to investigate the proteome of isolated glomeruli from FFPE tissue. Glomerular filtration barrier proteins had reduced abundance in the non-clipped kidney of 2K1C hypertensive rats.
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Affiliation(s)
- Kenneth Finne
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Heidrun Vethe
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Trude Skogstrand
- Department of Clinical Medicine, University of Bergen, Bergen, Norway Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Sabine Leh
- Department of Clinical Medicine, University of Bergen, Bergen, Norway Department of Pathology, Haukeland University Hospital, Bergen, Norway
| | - Tone D Dahl
- Department of Clinical Medicine, University of Bergen, Bergen, Norway Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Olav Tenstad
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Frode S Berven
- Department of Biomedicine, University of Bergen, Bergen, Norway The Norwegian Multiple Sclerosis National Competence Centre, Department of Neurology, Haukeland University Hospital, Bergen, Norway
| | - Rolf K Reed
- Department of Biomedicine, University of Bergen, Bergen, Norway Centre for Cancer Biomarkers (CCBIO), University of Bergen, Bergen, Norway
| | - Bjørn Egil Vikse
- Department of Clinical Medicine, University of Bergen, Bergen, Norway Department of Medicine, Haukeland University Hospital, Bergen, Norway Department of Medicine, Haugesund Hospital, Haugesund, Norway
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18
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Wang Z, Grigo C, Steinbeck J, von Hörsten S, Amann K, Daniel C. Soluble DPP4 originates in part from bone marrow cells and not from the kidney. Peptides 2014; 57:109-17. [PMID: 24874705 DOI: 10.1016/j.peptides.2014.05.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 05/15/2014] [Accepted: 05/15/2014] [Indexed: 12/12/2022]
Abstract
Dipeptidyl peptidase 4 (DPP4) is known to inactivate incretins as well as important chemokines and neuropeptides. DPP4 is expressed as a transmembrane protein but also occurs as a soluble enzyme circulating in the blood. However, the origin of the soluble DPP4 (sDPP4) is still unknown. In this study, DPP4 activity was quantified in plasma and extracted from different rat organs. Then, in order to see if the kidney or the bone marrow was the source of sDPP4, kidney or bone marrow transplantation was performed between wildtype (wt) Dark Agouti (DA) and DPP4 deficient congenic rats (n=6-9). Kidney was verified to have the highest DPP4 activity, followed by spleen and lung. In the following three weeks after successful kidney transplantation only transient trace plasma DPP4 activity was detected in DPP4 deficient rats receiving wt kidneys. In addition, DPP4 activity was not diminished in DA wt rats receiving DPP4 deficient kidneys. Both findings indicated that sDPP4 did not originate from the kidney. In contrast, 43±14% (compared to wt) sDPP4 activity was detected in the plasma of DPP4 deficient DA rats that were reconstituted with wt bone marrow cells. Not only leukocyte but also macrophage subpopulations express DPP4 in bone marrow as well as in blood as assessed by flow cytometry. Thus, bone marrow derived cells but not the kidney represent at least one source of sDPP4. And leukocyte or macrophage subpopulations could be potential candidates.
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Affiliation(s)
- Zhendi Wang
- Department of Nephrology and Hypertension, University of Erlangen-Nürnberg, Loschgestr. 8, 91054 Erlangen, Germany; Department of Urologic Surgery, Union Hospital, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, PR China.
| | - Christina Grigo
- Division of Nephropathology, University of Erlangen-Nürnberg, Krankenhausstr. 8-10, 91054 Erlangen, Germany.
| | - Julia Steinbeck
- Division of Nephropathology, University of Erlangen-Nürnberg, Krankenhausstr. 8-10, 91054 Erlangen, Germany.
| | - Stephan von Hörsten
- Department for Experimental Therapy, Friedrich-Alexander Universität Erlangen-Nürnberg, Palmsanlage 5, 91054 Erlangen, Germany.
| | - Kerstin Amann
- Division of Nephropathology, University of Erlangen-Nürnberg, Krankenhausstr. 8-10, 91054 Erlangen, Germany.
| | - Christoph Daniel
- Division of Nephropathology, University of Erlangen-Nürnberg, Krankenhausstr. 8-10, 91054 Erlangen, Germany.
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Zhang R, Shi L, Zhou L, Zhang G, Wu X, Shao F, Ma G, Ying K. Transgelin as a therapeutic target to prevent hypoxic pulmonary hypertension. Am J Physiol Lung Cell Mol Physiol 2014; 306:L574-83. [PMID: 24464808 DOI: 10.1152/ajplung.00327.2013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
We previously observed that transgelin was preferentially expressed in human pulmonary arterial smooth muscle cells (PAMSCs) under hypoxia and that the upregulation of transgelin was independent of hypoxia-inducible factor 1α (HIF-1α). Reduced transgelin expression was accompanied by significantly impaired migration ability in vitro. However, the regulation mechanism of transgelin and its function in preventing hypoxic pulmonary hypertension (HPH) was unclear. In the present study, RNA interference with hypoxia-inducible factor 2α (HIF-2α) was employed in human PASMCs. Transgelin expression was diminished in HIF-2α-siRNA-treated cells at both the mRNA and protein levels under hypoxia. However, HIF-2α did not transactivate the transgelin promoter directly. TGF-β1 concentration in human PASMCs culture medium was higher under hypoxia, and the accumulated TGF-β1 under hypoxia was regulated by HIF-2α. Furthermore, luciferase and chromatin immunoprecipitation assays indicated that TGF-β1/Smad3 could bind to the transgelin promoter, resulting in increased transgelin expression. In addition to nonintact cellular migration, inhibition of transgelin expression resulted in impaired proliferation in vitro under hypoxia. A lentiviral vector used to inhibit transgelin expression was constructed and intratracheally instilled in rats 3 wk prior to hypoxia treatment. Our final results indicated that inhibition of transgelin expression locally could attenuate increased right ventricular systolic pressure and its associated cardiac and pulmonary vessel remodeling under hypoxia. Our findings indicate that HIF-2α upregulates transgelin indirectly and that accumulated TGF-β1 is a mediator in the upregulation of transgelin by HIF-2α under hypoxia. Inhibition of transgelin expression locally could prevent HPH and pulmonary vascular remodeling in vivo.
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Affiliation(s)
- Ruifeng Zhang
- Dept. of Respiratory Medicine, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang Univ., 3 East Qingchun Rd., Hangzhou, China.
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Karagianni F, Prakoura N, Kaltsa G, Politis P, Arvaniti E, Kaltezioti V, Psarras S, Pagakis S, Katsimboulas M, Abed A, Chatziantoniou C, Charonis A. Transgelin Up-Regulation in Obstructive Nephropathy. PLoS One 2013; 8:e66887. [PMID: 23840546 PMCID: PMC3694161 DOI: 10.1371/journal.pone.0066887] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 05/10/2013] [Indexed: 01/21/2023] Open
Abstract
Fibrosis is a complex and multifactorial process, affecting the structure and compromising the function of several organs. Among those, renal fibrosis is an important pathological change, eventually leading to renal failure. Proteomic analysis of the renal parenchyma in the well-established rat model of unilateral ureteral obstruction (UUO model) suggested that transgelin was up-regulated during the development of fibrosis. Transgelin up-regulation was confirmed both at the protein and at the mRNA level. It was observed that at early stages of fibrosis transgelin was mainly expressed in the interstitial compartment and, more specifically, in cells surrounding the glomeruli. Subsequently, it was confirmed that transgelin expressing cells were activated fibroblasts, based on their extensive co-expression of α-SMA and their complete lack of co-distribution with markers of other cell types (endothelial, epithelial and cells of the immune system). These periglomerular fibroblasts exhibited staining for transgelin mainly cytoplasmic but occasionally nuclear as well. In addition, transgelin expression in periglomerular fibroblasts was absent in renal fibrosis developed in a hypertensive model, compared to the UUO model. Promoter analysis indicated that there are several conserved motifs for transcription factor binding. Among those, Kruppel-like factor 6 was found to be up-regulated in transgelin positive periglomerular activated fibroblasts, suggesting a possible involvement in the mechanism of transgelin up-regulation. These data strongly suggest that transgelin is up-regulated in the obstructive nephropathy and could be used as a novel marker for renal fibrosis in the future.
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Affiliation(s)
- Fani Karagianni
- Biomedical Research Foundation of the Academy of Athens, Section of Histology, Center for Basic Research I, Athens, Greece
| | - Niki Prakoura
- Biomedical Research Foundation of the Academy of Athens, Section of Histology, Center for Basic Research I, Athens, Greece
| | - Garyfallia Kaltsa
- Biomedical Research Foundation of the Academy of Athens, Section of Histology, Center for Basic Research I, Athens, Greece
| | - Panagiotis Politis
- Biomedical Research Foundation of the Academy of Athens, Section of Histology, Center for Basic Research I, Athens, Greece
| | - Elena Arvaniti
- Biomedical Research Foundation of the Academy of Athens, Section of Histology, Center for Basic Research I, Athens, Greece
| | - Valeria Kaltezioti
- Biomedical Research Foundation of the Academy of Athens, Section of Histology, Center for Basic Research I, Athens, Greece
| | - Stelios Psarras
- Biomedical Research Foundation of the Academy of Athens, Section of Histology, Center for Basic Research I, Athens, Greece
| | - Stamatis Pagakis
- Biomedical Research Foundation of the Academy of Athens, Biological Imaging Unit, Athens, Greece
| | - Michalis Katsimboulas
- Biomedical Research Foundation of the Academy of Athens, Center for Experimental Surgery, Athens, Greece
| | - Ahmed Abed
- INSERM and Université Pierre et Marie Curie-Paris VI, Paris, France
| | | | - Aristidis Charonis
- Biomedical Research Foundation of the Academy of Athens, Section of Histology, Center for Basic Research I, Athens, Greece
- * E-mail:
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Yu B, Chen X, Li J, Qu Y, Su L, Peng Y, Huang J, Yan J, Yu Y, Gu Q, Zhu Z, Liu B. Stromal fibroblasts in the microenvironment of gastric carcinomas promote tumor metastasis via upregulating TAGLN expression. BMC Cell Biol 2013; 14:17. [PMID: 23510049 PMCID: PMC3610155 DOI: 10.1186/1471-2121-14-17] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Accepted: 03/15/2013] [Indexed: 12/31/2022] Open
Abstract
Background Fibroblasts play a critical role in tumorigenesis, tumor progression and metastasis. However, their detailed molecular characteristics and clinical significance are still elusive. TAGLN is an actin-binding protein that plays an important role in tumorigenesis. Results We investigated the interaction between cancer cells and the tumor microenvironment to determine how the fibroblasts from human gastric carcinoma facilitate tumorigenesis through TAGLN. QRT-PCR and Western blot indicated that TAGLN expression was upregulated in gastric carcinoma-associated fibroblasts (CAFs) that promote gastric cancer cell migration and invasion. Using small interfering RNA (siRNA), we found that CAFs enhanced tumor metastasis through upregulated TAGLN in vitro and in vivo. The expression of matrix metalloproteinase-2 (MMP-2) was significantly lower after TAGLN knock-down by siRNA. TAGLN levels were elevated in human gastric cancer stroma than normal gastric stroma and associated with differentiation and lymph node metastasis of gastric cancer. Conclusion CAFs may promote gastric cancer cell migration and invasion via upregulating TAGLN and TAGLN induced MMP-2 production.
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Affiliation(s)
- Beiqin Yu
- Key Laboratory of Shanghai Gastric Neoplasms, Department of Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Li Q, Shi R, Wang Y, Niu X. TAGLN suppresses proliferation and invasion, and induces apoptosis of colorectal carcinoma cells. Tumour Biol 2012; 34:505-13. [PMID: 23138394 DOI: 10.1007/s13277-012-0575-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 10/24/2012] [Indexed: 12/14/2022] Open
Abstract
In order to find the correlation between transgelin gene (TAGLN) and colorectal carcinoma occurrence, we investigated the expression of TAGLN in colorectal carcinoma tissue samples and colorectal carcinoma LoVo cells. Meanwhile, the effects of TAGLN on the characteristics of LoVo cells were also examined. The expressions of TAGLN in colorectal carcinoma tissues, adjacent normal tissues, and LoVo cells were detected by the Western blot method. The recombinant plasmid pcDNA3.1-TAGLN was established and transfected into LoVo cells with the help of Lipofectamine™ 2000. At the same time, the TAGLN siRNA was transfected into LoVo cells in another group. Forty-eight hours later, the expressions of TAGLN in all groups were assayed by Western blot, and the cell viability was analyzed by MTT (3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide) assay. The cell cycle and cell apoptosis were examined by flow cytometry, and the cell invasive ability was analyzed by Transwell invasion experiment. The effect of TALGN on the expression of matrix metalloproteinase 9 (MMP9) was detected by Western blot. Western blot analysis showed that the expressions of TALGN in colorectal carcinoma tissues and LoVo cells were significantly decreased compared with colorectal carcinoma adjacent normal tissues (p < 0.01). In the overexpression or RNAi experiments, the plasmid pcDNA3.1-TAGLN significantly enhanced TALGN expression (p < 0.01), and TAGLN siRNA significantly decreased TAGLN expression (p < 0.01) in LoVo cells 48 h after transfection. In addition, MTT assay indicated that the cell viability of LoVo cells in the pcDNA3.1-TAGLN transfection group was significantly lower than that in the untransfected control group (p < 0.05). Furthermore, the overexpression of TAGLN significantly lowered the cell proliferation index (p < 0.05) and improved cell apoptosis (p < 0.01) in LoVo cells. In Transwell invasive experiments, the cell number, which had migrated through the chamber membrane, significantly decreased in the pcDNA3.1-TAGLN transfection group (p < 0.05) and significantly increased in the TAGLN knockdown group (p < 0.05) compared to the untransfected control group. At the same time, the expression of MMP9 was notably inhibited in the pcDNA3.1-TAGLN transfection group (p < 0.01). The expressions of TAGLN were inhibited in colorectal carcinoma tissues and colorectal carcinoma LoVo cells. The study also demonstrated that TAGLN could attenuate the proliferation and invasive ability of LoVo cells and enhance LoVo cell apoptosis. Furthermore, the expression of MMP9 was also inhibited by TAGLN. All these results could bring us a new perspective for biological therapy in colorectal carcinoma.
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Affiliation(s)
- Qinmin Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu Province, 210029, People's Republic of China
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