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Roccatello D, Lan HY, Sciascia S, Sethi S, Fornoni A, Glassock R. From inflammation to renal fibrosis: A one-way road in autoimmunity? Autoimmun Rev 2024; 23:103466. [PMID: 37848157 DOI: 10.1016/j.autrev.2023.103466] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 10/13/2023] [Indexed: 10/19/2023]
Abstract
Renal fibrosis is now recognized as a main determinant of renal pathology to include chronic kidney disease. Deposition of pathological matrix in the walls of glomerular capillaries, the interstitial space, and around arterioles predicts and contributes to the functional demise of the nephron and its surrounding vasculature. The recent identification of the major cell populations of fibroblast precursors in the kidney interstitium such as pericytes and tissue-resident mesenchymal stem cells, or bone-marrow-derived macrophages, and in the glomerulus such as podocytes, parietal epithelial and mesangial cells, has enabled the study of the fibrogenic process thought the lens of involved immunological pathways. Besides, a growing body of evidence is supporting the role of the lymphatic system in modulating the immunological response potentially leading to inflammation and ultimately renal damage. These notions have moved our understanding of renal fibrosis to be recognized as a clinical entity and new main player in autoimmunity, impacting directly the management of patients.
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Affiliation(s)
- Dario Roccatello
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley (North-West Italy), San Giovanni Bosco Hub Hospital, ASL Città di Torino and Department of Clinical and Biological Sciences of the University of Turin, Turin, Italy.
| | - Hui-Yao Lan
- Department of Medicine & Therapeutics, and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China; Guangdong-Hong Kong Joint Laboratory on Immunological and Genetic Kidney Diseases,Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Savino Sciascia
- University Center of Excellence on Nephrologic, Rheumatologic and Rare Diseases (ERK-net, ERN-Reconnect and RITA-ERN Member) with Nephrology and Dialysis Unit and Center of Immuno-Rheumatology and Rare Diseases (CMID), Coordinating Center of the Interregional Network for Rare Diseases of Piedmont and Aosta Valley (North-West Italy), San Giovanni Bosco Hub Hospital, ASL Città di Torino and Department of Clinical and Biological Sciences of the University of Turin, Turin, Italy
| | - Sanjeev Sethi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Alessia Fornoni
- Peggy and Harold Katz Family Drug Discovery Center, Katz Family Division of Nephrology and Hypertension, Department of Medicine, Miller School of Medicine, University of Miami, Miami, USA
| | - Richard Glassock
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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Onozawa G, Nagasaka A, Bando Y, Sakiyama K, Yamamoto N, Amano O. Specific localization of fibroblasts at the intercalated duct in the major salivary glands of rats. J Oral Biosci 2024:S1349-0079(24)00017-3. [PMID: 38382878 DOI: 10.1016/j.job.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/09/2024] [Accepted: 02/13/2024] [Indexed: 02/23/2024]
Abstract
OBJECTIVES Immunohistochemical methods were employed to investigate the morphological heterogeneity and localization of fibroblasts associated with the function of major salivary glands in rats. METHODS Histochemical and electron microscopic observations were made in rat parotid, submandibular, and sublingual glands and pancreas. Fibroblasts were immunostained using their specific marker, 47 kDa heat shock protein (Hsp47). RESULTS Hsp47-immunopositive fibroblasts within the intralobular connective tissue exhibited a notably smaller size compared with the interlobular connective tissue. They were loosely distributed throughout the connective tissue. However, fibroblasts with elongated long processes were explicitly identified at the intercalated ducts in parotid, sublingual, and submandibular glands. Fibroblastic bodies and processes were tightly approximated with the basement membrane of the duct. Electron microscopy confirmed these findings, revealing a thin layer consisting of collagen fibers was found between the fibroblasts and the basement membrane. Double staining of Hsp47 and α-smooth muscle actin (αSMA) in parotid glands indicating that Hsp47-positive fibroblasts enveloped both the duct and αSMA-positive myoepithelial cells. Additionally, They projected long and thin processes longitudinally at the straight portion or circularly at the bifurcated portion of the duct. The three-dimensional reconstruction showed a frame-like structure of fibroblasts surrounding the intercalated duct with longitudinal myoepithelial cells. However, such specific localization of fibroblasts was not detected in the exocrine pancreas lacking myoepithelium. CONCLUSIONS Small fibroblasts with long processes connecting or overwrapping each other and thin collagen layers surround the intercalated ducts in rat major salivary glands, presumably contributing to protecting the ducts from salivary flow and myoepithelial contraction.
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Affiliation(s)
- Go Onozawa
- Division of Histology, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado, Saitama, 3500283, Japan; Division of Oral and Maxillofacial Surgery, Meikai University School of Dentistry, Japan
| | - Arata Nagasaka
- Division of Histology, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado, Saitama, 3500283, Japan
| | - Yasuhiko Bando
- Division of Histology, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado, Saitama, 3500283, Japan
| | - Koji Sakiyama
- Division of Anatomy, Meikai University School of Dentistry, Japan
| | - Nobuharu Yamamoto
- Division of Oral and Maxillofacial Surgery, Meikai University School of Dentistry, Japan
| | - Osamu Amano
- Division of Histology, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado, Saitama, 3500283, Japan.
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3
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Zhu YF, Wan MC, Gao P, Shen MJ, Zhu YN, Hao JX, Lu WC, Wang CY, Tay F, Ehrlich H, Niu LN, Jiao K. Fibrocyte: A missing piece in the pathogenesis of fibrous epulis. Oral Dis 2023. [PMID: 38148479 DOI: 10.1111/odi.14847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/18/2023] [Accepted: 12/10/2023] [Indexed: 12/28/2023]
Abstract
OBJECTIVES To explore the role of fibrocytes in the recurrence and calcification of fibrous epulides. METHODS Different subtypes of fibrous epulides and normal gingival tissue specimens were first collected for histological and immunofluorescence analyses to see if fibrocytes were present and whether they differentiated into myofibroblasts and osteoblasts upon stimulated by transforming growth factor-β1 (TGF-β1). Electron microscopy and elemental analysis were used to characterize the extracellular microenvironment in different subtypes of fibrous epulides. Human peripheral blood mononuclear cells (PBMCs) were subsequently isolated from in vitro models to mimic the microenvironment in fibrous epulides to identify whether TGF-β1 as well as the calcium and phosphorus ion concentration in the extracellular matrix (ECM) of a fibrous epulis trigger fibrocyte differentiation. RESULTS Fibrous epulides contain fibrocytes that accumulate in the local inflammatory environment and have the ability to differentiate into myofibroblasts or osteoblasts. TGF-β1 promotes fibrocytes differentiation into myofibroblasts in a concentration-dependent manner, while TGF-β1 stimulates the fibrocytes to differentiate into osteoblasts when combined with a high calcium and phosphorus environment. CONCLUSIONS Our study revealed fibrocytes play an important role in the fibrogenesis and osteogenesis in fibrous epulis, and might serve as a therapeutic target for the inhibition of recurrence of fibrous epulides.
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Affiliation(s)
- Yi-Fei Zhu
- The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
- Department of Prosthodontics, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Mei-Chen Wan
- Department of Prosthodontics, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Peng Gao
- The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Min-Juan Shen
- Department of Prosthodontics, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yi-Na Zhu
- Department of Prosthodontics, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Jia-Xin Hao
- Department of Prosthodontics, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, China
| | - Wei-Cheng Lu
- Department of Prosthodontics, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Chen-Yu Wang
- Department of Prosthodontics, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Franklin Tay
- The Dental College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Hermann Ehrlich
- Institute of Electronic and Sensor Materials, Freiberg, Germany
| | - Li-Na Niu
- The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
- Department of Prosthodontics, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Kai Jiao
- Department of Stomatology, Tangdu Hospital; State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
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Kuziel G, Moore BN, Arendt LM. Obesity and Fibrosis: Setting the Stage for Breast Cancer. Cancers (Basel) 2023; 15:cancers15112929. [PMID: 37296891 DOI: 10.3390/cancers15112929] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Obesity is a rising health concern and is linked to a worsened breast cancer prognosis. Tumor desmoplasia, which is characterized by elevated numbers of cancer-associated fibroblasts and the deposition of fibrillar collagens within the stroma, may contribute to the aggressive clinical behavior of breast cancer in obesity. A major component of the breast is adipose tissue, and fibrotic changes in adipose tissue due to obesity may contribute to breast cancer development and the biology of the resulting tumors. Adipose tissue fibrosis is a consequence of obesity that has multiple sources. Adipocytes and adipose-derived stromal cells secrete extracellular matrix composed of collagen family members and matricellular proteins that are altered by obesity. Adipose tissue also becomes a site of chronic, macrophage-driven inflammation. Macrophages exist as a diverse population within obese adipose tissue and mediate the development of fibrosis through the secretion of growth factors and matricellular proteins and interactions with other stromal cells. While weight loss is recommended to resolve obesity, the long-term effects of weight loss on adipose tissue fibrosis and inflammation within breast tissue are less clear. Increased fibrosis within breast tissue may increase the risk for tumor development as well as promote characteristics associated with tumor aggressiveness.
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Affiliation(s)
- Genevra Kuziel
- Cancer Biology Graduate Program, University of Wisconsin-Madison, 1111 Highland Ave, Madison, WI 53705, USA
| | - Brittney N Moore
- Department of Comparative Biosciences, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53706, USA
| | - Lisa M Arendt
- Cancer Biology Graduate Program, University of Wisconsin-Madison, 1111 Highland Ave, Madison, WI 53705, USA
- Department of Comparative Biosciences, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53706, USA
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Yu JB, Lee DS, Padanilam BJ, Kim J. Repeated Administration of Cisplatin Transforms Kidney Fibroblasts through G2/M Arrest and Cellular Senescence. Cells 2022; 11:cells11213472. [PMID: 36359868 PMCID: PMC9655665 DOI: 10.3390/cells11213472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/29/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
Cisplatin is a potent chemotherapeutic used for the treatment of many types of cancer, but it has nephrotoxic side effects leading to acute kidney injury and subsequently chronic kidney disease (CKD). Previous work has focused on acute kidney tubular injury induced by cisplatin, whereas the chronic sequelae post-injury has not been well-explored. In the present study, we established a kidney fibroblast model of CKD induced by repeated administration of cisplatin (RAC) as a clinically relevant model. In NRK-49F rat kidney fibroblasts, RAC upregulated α-smooth muscle actin (α-SMA) and fibronectin proteins, suggesting that RAC induces kidney fibroblast-to-myofibroblast transformation. RAC also enhanced cell size, including the cell attachment surface area, nuclear area, and cell volume. Furthermore, RAC induced p21 expression and senescence-associated β-galactosidase activity, suggesting that kidney fibroblasts exposed to RAC develop a senescent phenotype. Inhibition of p21 reduced cellular senescence, hypertrophy, and myofibroblast transformation induced by RAC. Intriguingly, after RAC, kidney fibroblasts were arrested at the G2/M phase. Repeated treatment with paclitaxel as an inducer of G2/M arrest upregulated p21, α-SMA, and fibronectin in the kidney fibroblasts. Taken together, these data suggest that RAC transforms kidney fibroblasts into myofibroblasts through G2/M arrest and cellular senescence.
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Affiliation(s)
- Jia-Bin Yu
- Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, Jeju 63243, Korea
| | - Dong-Sun Lee
- Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, Jeju 63243, Korea
- Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju 63243, Korea
- Jeju Microbiome Research Center, Jeju National University, Jeju 63243, Korea
- Faculty of Biotechnology, College of Applied Life Sciences, SARI, Jeju National University, Jeju 63243, Korea
| | - Babu J. Padanilam
- Department of Urology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Correspondence: (B.J.P.); (J.K.)
| | - Jinu Kim
- Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, Jeju 63243, Korea
- Department of Anatomy, Jeju National University College of Medicine, Jeju 63243, Korea
- Correspondence: (B.J.P.); (J.K.)
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6
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Chtourou Y, Morjen M, Ammar R, Mhiri R, Jemaà M, Elbini-dhouib I, Fetoui H, Srairi-abid N, Marrakchi N, Jebali J. Investigation of the Renal Protective Effect of Combined Dietary Polyphenols in Streptozotocin-Induced Diabetic Aged Rats. Nutrients 2022; 14:2867. [PMID: 35889824 PMCID: PMC9319778 DOI: 10.3390/nu14142867] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 12/10/2022] Open
Abstract
Natural polyphenols are widely reported to have a large range of pharmacological properties, especially antioxidant activities and free radical scavenging capacities. In this study, we investigate the effects of naringin, chlorogenic acid, and quercetin mixtures (NCQ) on renal fibrosis in streptozotocin (STZ)-induced diabetic aged rats and its underlying mechanisms for ten consecutive weeks. The oxidative defense system in the kidneys of treated rats was found to be improved. Several biomarkers were investigated including the blood urea nitrogen, creatinine, and uric acid. Moreover, antioxidant parameters were evaluated and we found that superoxide dismutase, catalase, glutathione peroxidase, Na+-K+-ATPase activities, the nitric oxide production, the protein carbonyl, the advanced oxidation protein products, lipid peroxidation, and reduced glutathione levels were all significantly balanced and close to control values. In addition, NCQ restored renal injuries and fibrosis as assessed by histological method and molecular biology investigation of the matrix metalloproteinase, the transforming growth factor-beta TGF-β, the tumor necrosis factor TNFα, and p53 expression. Our study proposes the NCQ combination as potential plant-derived bioactive compounds to prevent diabetic nephropathy.
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Martín-Taboada M, Corrales P, Medina-Gómez G, Vila-Bedmar R. Tackling the effects of extracellular vesicles in fibrosis. Eur J Cell Biol 2022; 101:151221. [PMID: 35405464 DOI: 10.1016/j.ejcb.2022.151221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 11/22/2022] Open
Abstract
Fibrosis is a physiological process of tissue repair that turns into pathological when becomes chronic, damaging the functional structure of the tissue. In this review we outline the current status of extracellular vesicles as modulators of the fibrotic process at different levels. In adipose tissue, extracellular vesicles mediate the intercellular communication not only between adipocytes, but also between adipocytes and other cells of the stromal vascular fraction. Thus, they could be altering essential processes for the functionality of adipose tissue, such as adipocyte hypertrophy/hyperplasia, tissue plasticity, adipogenesis and/or inflammation, and ultimately trigger fibrosis. This process is particularly important in obesity, and may eventually, influence the development of obesity-associated alterations. In this regard, obesity is now recognized as an independent risk factor for the development of chronic kidney disease, although the role of extracellular vesicles in this connection has not been explored so far. Nonetheless, the role of extracellular vesicles in the onset and progression of renal fibrosis has been highlighted due to the critical role of fibrosis as a common feature of kidney diseases. In fact, the content of extracellular vesicles disturbs cellular signaling cascades involved in fibrosis in virtually all types of renal cells. What is certain is that the study of extracellular vesicles is complex, as their isolation and manipulation is still difficult to reproduce, which complicates the overview of their physiopathological effects. Nevertheless, new strategies have been developed to exploit the potential of extracellular vesicles and their cargo, both as biomarkers and as therapeutic tools to prevent the progression of fibrosis towards an irreversible event.
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Jiang S, Luo M, Bai X, Nie P, Zhu Y, Cai H, Li B, Luo P. Cellular crosstalk of glomerular endothelial cells and podocytes in diabetic kidney disease. J Cell Commun Signal 2022; 16:313-331. [PMID: 35041192 DOI: 10.1007/s12079-021-00664-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 12/08/2021] [Indexed: 02/06/2023] Open
Abstract
Diabetic kidney disease (DKD) is a serious microvascular complication of diabetes and is the leading cause of end-stage renal disease (ESRD). Persistent proteinuria is an important feature of DKD, which is caused by the destruction of the glomerular filtration barrier (GFB). Glomerular endothelial cells (GECs) and podocytes are important components of the GFB, and their damage can be observed in the early stages of DKD. Recently, studies have found that crosstalk between cells directly affects DKD progression, which has prospective research significance. However, the pathways involved are complex and largely unexplored. Here, we review the literature on cellular crosstalk of GECs and podocytes in the context of DKD, and highlight specific gaps in the field to propose future research directions. Elucidating the intricates of such complex processes will help to further understand the pathogenesis of DKD and develop better prevention and treatment options.
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Affiliation(s)
- Shan Jiang
- Department of Nephrology, The Second Hospital of Jilin University, No. 218, Ziqiang Street, Changchun, 130041, China
| | - Manyu Luo
- Department of Nephrology, The Second Hospital of Jilin University, No. 218, Ziqiang Street, Changchun, 130041, China
| | - Xue Bai
- Department of Nephrology, The Second Hospital of Jilin University, No. 218, Ziqiang Street, Changchun, 130041, China
| | - Ping Nie
- Department of Nephrology, The Second Hospital of Jilin University, No. 218, Ziqiang Street, Changchun, 130041, China
| | - Yuexin Zhu
- Department of Nephrology, The Second Hospital of Jilin University, No. 218, Ziqiang Street, Changchun, 130041, China
| | - Hangxi Cai
- Department of Nephrology, The Second Hospital of Jilin University, No. 218, Ziqiang Street, Changchun, 130041, China
| | - Bing Li
- Department of Nephrology, The Second Hospital of Jilin University, No. 218, Ziqiang Street, Changchun, 130041, China.
| | - Ping Luo
- Department of Nephrology, The Second Hospital of Jilin University, No. 218, Ziqiang Street, Changchun, 130041, China.
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Cha JJ, Mandal C, Ghee JY, Yoo JA, Lee MJ, Kang YS, Hyun YY, Lee JE, Kim HW, Han SY, Han JY, Chung AY, Yoon DW, Rhyu IJ, Oh J, Cha DR. Inhibition of Renal Stellate Cell Activation Reduces Renal Fibrosis. Biomedicines 2020; 8:biomedicines8100431. [PMID: 33086608 PMCID: PMC7603238 DOI: 10.3390/biomedicines8100431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/16/2020] [Accepted: 10/16/2020] [Indexed: 02/06/2023] Open
Abstract
Interstitial fibrosis is a common feature of chronic kidney disease, and platelet-derived growth factor receptor-β (PDGFR-β)-positive mesenchymal cells are reportedly the major source of scar-producing myofibroblasts. We had previously demonstrated that albumin and its derivative R-III (a retinol-binding protein-albumin domain III fusion protein) inhibited the transdifferentiation/activation of hepatic stellate cells (HSCs) to myofibroblasts and that R-III administration reduced liver fibrosis. In this study, we isolated cells (referred to as renal stellate cells, RSCs) from rat kidney tissues using the HSC isolation protocol and compared their morphological and biochemical characteristics with those of HSCs. RSCs shared many characteristics with HSCs, such as storage of vitamin A-containing lipid droplets and expression of HSC markers as well as pericyte markers. RSCs underwent spontaneous transdifferentiation into myofibroblasts in in vitro culture, which was inhibited by albumin expression or R-III treatment. We also evaluated the therapeutic effects of R-III in unilateral ureteral obstruction (UUO)-induced renal fibrosis in mice. Injected R-III localized predominantly in cytoglobin/stellate cell activation-associated protein (Cygb/STAP)-positive cells in the kidney and reduced renal fibrosis. These findings suggest that RSCs can be recognized as the renal counterparts of HSCs and that RSCs represent an attractive therapeutic target for anti-fibrotic therapy.
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Affiliation(s)
- Jin Joo Cha
- Department of Nephrology, Korea University Ansan Hospital, Ansan 15355, Korea; (J.J.C.); (J.Y.G.); (J.A.Y.); (M.J.L.); (Y.S.K.)
| | - Chanchal Mandal
- Department of Anatomy, Korea University College of Medicine, Seoul 02841, Korea; (C.M.); (A.Y.C.); (D.W.Y.); (I.J.R.)
| | - Jung Yeon Ghee
- Department of Nephrology, Korea University Ansan Hospital, Ansan 15355, Korea; (J.J.C.); (J.Y.G.); (J.A.Y.); (M.J.L.); (Y.S.K.)
| | - Ji Ae Yoo
- Department of Nephrology, Korea University Ansan Hospital, Ansan 15355, Korea; (J.J.C.); (J.Y.G.); (J.A.Y.); (M.J.L.); (Y.S.K.)
| | - Mi Jin Lee
- Department of Nephrology, Korea University Ansan Hospital, Ansan 15355, Korea; (J.J.C.); (J.Y.G.); (J.A.Y.); (M.J.L.); (Y.S.K.)
| | - Young Sun Kang
- Department of Nephrology, Korea University Ansan Hospital, Ansan 15355, Korea; (J.J.C.); (J.Y.G.); (J.A.Y.); (M.J.L.); (Y.S.K.)
| | - Young Youl Hyun
- Department of Nephrology, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul 03181, Korea;
| | - Ji Eun Lee
- Department of Nephrology, Wonkwang University Sanbon Hospital, Gunpo 15865, Korea; (J.E.L.); (H.W.K.)
| | - Hyun Wook Kim
- Department of Nephrology, Wonkwang University Sanbon Hospital, Gunpo 15865, Korea; (J.E.L.); (H.W.K.)
| | - Sang Youb Han
- Department of Nephrology, Inje University Ilsan Paik Hospital, Ilsan 10380, Korea;
| | - Jee Young Han
- Department of Pathology, Inha University Hospital, Incheon 22332, Korea;
| | - Ah Young Chung
- Department of Anatomy, Korea University College of Medicine, Seoul 02841, Korea; (C.M.); (A.Y.C.); (D.W.Y.); (I.J.R.)
| | - Dae Wui Yoon
- Department of Anatomy, Korea University College of Medicine, Seoul 02841, Korea; (C.M.); (A.Y.C.); (D.W.Y.); (I.J.R.)
| | - Im Joo Rhyu
- Department of Anatomy, Korea University College of Medicine, Seoul 02841, Korea; (C.M.); (A.Y.C.); (D.W.Y.); (I.J.R.)
| | - Junseo Oh
- Department of Anatomy, Korea University College of Medicine, Seoul 02841, Korea; (C.M.); (A.Y.C.); (D.W.Y.); (I.J.R.)
- Correspondence: (J.O.); (D.R.C.); Tel.: +82-2-2286-1389 (J.O.); +82-31-412-5572 (D.R.C.)
| | - Dae Ryong Cha
- Department of Nephrology, Korea University Ansan Hospital, Ansan 15355, Korea; (J.J.C.); (J.Y.G.); (J.A.Y.); (M.J.L.); (Y.S.K.)
- Correspondence: (J.O.); (D.R.C.); Tel.: +82-2-2286-1389 (J.O.); +82-31-412-5572 (D.R.C.)
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10
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Gao Y, Yuan D, Gai L, Wu X, Shi Y, He Y, Liu C, Zhang C, Zhou G, Yuan C. Saponins from Panax japonicus ameliorate age-related renal fibrosis by inhibition of inflammation mediated by NF-κB and TGF-β1/Smad signaling and suppression of oxidative stress via activation of Nrf2-ARE signaling. J Ginseng Res 2020; 45:408-419. [PMID: 34025134 PMCID: PMC8134850 DOI: 10.1016/j.jgr.2020.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/22/2020] [Accepted: 08/26/2020] [Indexed: 12/23/2022] Open
Abstract
Background The decreased renal function is known to be associated with biological aging, of which the main pathological features are chronic inflammation and renal interstitial fibrosis. In previous studies, we reported that total saponins from Panax japonicus (SPJs) can availably protect acute myocardial ischemia. We proposed that SPJs might have similar protective effects for aging-associated renal interstitial fibrosis. Thus, in the present study, we evaluated the overall effect of SPJs on renal fibrosis. Methods Sprague-Dawley (SD) aging rats were given SPJs by gavage beginning from 18 months old, at 10 mg/kg/d and 60 mg/kg/d, up to 24 months old. After the experiment, changes in morphology, function and fibrosis of their kidneys were detected. The levels of serum uric acid (UA), β2-microglobulin (β2-MG) and cystatin C (Cys C) were assayed with ELISA kits. The levels of extracellular matrix (ECM), matrix metalloproteinases (MMPs), tissue inhibitors of metalloproteinases (TIMPs), inflammatory factors and changes of oxidative stress parameters were examined. Results After SPJs treatment, SD rats showed significantly histopathological changes in kidneys accompanied by decreased renal fibrosis and increased renal function; As compared with those in 3-month group, the levels of serum UA, Cys C and β2-MG in 24-month group were significantly increased (p < 0.05). Compared with those in the 24-month group, the levels of serum UA, Cys C and β2-MG in the SPJ-H group were significantly decreased. While ECM was reduced and the levels of MMP-2 and MMP-9 were increased, the levels of TIMP-1, TIMP-2 and transforming growth factor-β1 (TGF-β1)/Smad signaling were decreased; the expression level of phosphorylated nuclear factor kappa-B (NF-κB) was down-regulated with reduced inflammatory factors; meanwhile, the expression of nuclear factor erythroid 2-related factor 2-antioxidant response element (Nrf2-ARE) signaling was aggrandized. Conclusion These results suggest that SPJs treatment can improve age-associated renal fibrosis by inhibiting TGF-β1/Smad, NFκB signaling pathways and activating Nrf2-ARE signaling pathways and that SPJs can be a potentially valuable anti-renal fibrosis drug.
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Key Words
- ARE, antioxidant response element
- Aging
- COX2, cyclooxygenase-2
- Cys C, cystatin C
- ECM, extracellular matrix
- HO-1, human heme oxygenase 1
- IL-6, interleukin-6
- IκB, inhibitor of NF-κB
- LPO, lipid peroxides
- MCP-1, monocyte chemoattractant protein-1
- MMPs, matrix metalloproteinases
- NF-κB, nuclear factor kappa-B
- NQO1, recombinant NADH dehydrogenase quinone 1
- Nrf2, nuclear factor erythroid 2-related factor 2
- Nrf2-ARE signaling pathways
- PJ, Panax japonicas
- Renal fibrosis
- SD, Sprague-Dawley
- SPJ-H, high-dose of SPJ
- SPJ-L, low-dose of SPJ
- SPJs, saponins from panax japonicus
- TGF-β1, tumor growth factor-β1
- TGF-β1/Smad
- TIMPs, tissue inhibitors of metalloproteinases
- TNF-α, tumor necrosis factor-α
- Total saponins of panax japonicus
- UA, uric acid
- α-SMA, α-smooth muscle aorta
- β2-MG, β2-microglobulin
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Affiliation(s)
- Yan Gao
- College of Medical Science, China Three Gorges University, Yichang, China
| | - Ding Yuan
- College of Medical Science, China Three Gorges University, Yichang, China
| | - Liyue Gai
- College of Medical Science, China Three Gorges University, Yichang, China
| | - Xuelian Wu
- College of Medical Science, China Three Gorges University, Yichang, China
| | - Yue Shi
- College of Medical Science, China Three Gorges University, Yichang, China
| | - Yumin He
- College of Medical Science, China Three Gorges University, Yichang, China
| | - Chaoqi Liu
- College of Medical Science, China Three Gorges University, Yichang, China
| | - Changcheng Zhang
- College of Medical Science, China Three Gorges University, Yichang, China
| | - Gang Zhou
- College of Traditional Chinese Medicine, China Three Gorges University, Yichang, China
| | - Chengfu Yuan
- College of Medical Science, China Three Gorges University, Yichang, China.,Third-Grade Pharmacological Laboratory on Chinese Medicine Approved by State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, China
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Torres Á, Muñoz K, Nahuelpán Y, R Saez AP, Mendoza P, Jara C, Cappelli C, Suarez R, Oyarzún C, Quezada C, San Martín R. Intraglomerular Monocyte/Macrophage Infiltration and Macrophage-Myofibroblast Transition during Diabetic Nephropathy Is Regulated by the A 2B Adenosine Receptor. Cells 2020; 9:E1051. [PMID: 32340145 DOI: 10.3390/cells9041051] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/26/2020] [Accepted: 04/13/2020] [Indexed: 02/08/2023] Open
Abstract
Diabetic nephropathy (DN) is considered the main cause of kidney disease in which myofibroblasts lead to renal fibrosis. Macrophages were recently identified as the major source of myofibroblasts in a process known as macrophage–myofibroblast transition (MMT). Adenosine levels increase during DN and in vivo administration of MRS1754, an antagonist of the A2B adenosine receptor (A2BAR), attenuated glomerular fibrosis (glomerulosclerosis). We aimed to investigate the association between A2BAR and MMT in glomerulosclerosis during DN. Kidneys/glomeruli of non-diabetic, diabetic, and MRS1754-treated diabetic (DM+MRS1754) rats were processed for histopathologic, transcriptomic, flow cytometry, and cellular in vitro analyses. Macrophages were used for in vitro cell migration/transmigration assays and MMT studies. In vivo MRS1754 treatment attenuated the clinical and histopathological signs of glomerulosclerosis in DN rats. Transcriptomic analysis demonstrated a decrease in chemokine-chemoattractants/cell-adhesion genes of monocytes/macrophages in DM+MRS1754 glomeruli. The number of intraglomerular infiltrated macrophages and MMT cells increased in diabetic rats. This was reverted by MRS1754 treatment. In vitro cell migration/transmigration decreased in macrophages treated with MRS1754. Human macrophages cultured with adenosine and/or TGF-β induced MMT, a process which was reduced by MRS1754. We concluded that pharmacologic blockade of A2BAR attenuated some clinical signs of renal dysfunction and glomerulosclerosis, and decreased intraglomerular macrophage infiltration and MMT in DN rats.
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Abstract
Renal fibrosis is the final pathological process common to any ongoing, chronic kidney injury or maladaptive repair. Renal fibrosis is considered to be closely related to various cell types, such as fibroblasts, myofibroblasts, T cells, and other inflammatory cells. Multiple types of cells regulate renal fibrosis through the recruitment, proliferation, and activation of fibroblasts, and the production of the extracellular matrix. Cell trafficking is orchestrated by a family of small proteins called chemokines. Chemokines are cytokines with chemotactic properties, which are classified into 4 groups: CXCL, CCL, CX3CL, and XCL. Similarly, chemokine receptors are G protein-coupled seven-transmembrane receptors classified into 4 groups: XCR, CCR, CXCR, and CX3CR. Chemokine receptors are also implicated in the infiltration, differentiation, and survival of functional cells, triggering inflammation that leads to fibrosis development. In this review, we summarize the different chemokine receptors involved in the processes of fibrosis in different cell types. Further studies are required to identify the molecular mechanisms of chemokine signaling that contribute to renal fibrosis.
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Abstract
Renal fibrosis is characterized by excessive deposition of extracellular matrix (ECM) that disrupts and replaces functional parenchyma, which leads to organ failure. It is known as the major pathological mechanism of chronic kidney disease (CKD). Although CKD has an impact on no less than 10% of the world population, therapeutic options are still limited. Regardless of etiology, elevated TGF-β levels are highly correlated with the activated pro-fibrotic pathways and disease progression. TGF-β, the key driver of renal fibrosis, is involved in a dynamic pathophysiological process that leads to CKD and end-stage renal disease (ESRD). It is becoming clear that epigenetics regulates renal programming, and therefore, the development and progression of renal disease. Indeed, recent evidence shows TGF-β1/Smad signaling regulates renal fibrosis via epigenetic-correlated mechanisms. This review focuses on the function of TGF-β/Smads in renal fibrogenesis, and the role of epigenetics as a regulator of pro-fibrotic gene expression.
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Affiliation(s)
- Tao-Tao Ma
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, China
| | - Xiao-Ming Meng
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, China.
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Zeng Y, Cao D, Yu H, Hu Y, He M, Yang D, Zhuang X, Zhang L. Comprehensive analysis of vitreous humor chemokines in type 2 diabetic patients with and without diabetic retinopathy. Acta Diabetol 2019; 56:797-805. [PMID: 30911832 DOI: 10.1007/s00592-019-01317-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 02/25/2019] [Indexed: 02/05/2023]
Abstract
AIMS To compare the vitreous levels of chemokines in diabetic patients with and without retinopathy. To find the relationship between stages of diabetic retinopathy (DR) and levels of vitreous chemokines. METHODS The study involved 20 non-diabetic and 20 diabetic patients without clinical signs of DR (NDR) and 40 diabetic patients with proliferative diabetic retinopathy (PDR). The vitreous humor was collected and the levels of 40 chemokines were measured using magnetic color-bead-based multiplex assay. RESULTS The control group, NDR group, PDR with vitreous hemorrhage (VH) group, and PDR with tractional retinal detachment group comprised 20, 20, 21, and 19 eyes, respectively. Only the concentration of CCL3 was significantly higher in the NDR group compared with the controls (p = 0.038). Twenty-five types of chemokines were statistically higher in the PDR with VH group in comparison to NDR group (all p < 0.05). All chemokines were statistically higher in the PDR with TRD group in comparison to NDR group (all p < 0.05) apart from 3 chemokines: GM-CSF, MIF, and CCL3(p = 0.086, p = 0.109, p = 0.094, respectively). The concentration of CCL21, CCL15 in PDR with TRD group was significantly higher compared with PDR with VH group, while other 36 chemokines were not significantly different between PDR with VH group and PDR with TRD group. CONCLUSIONS The inflammation gradually worsen with the progression of DR. CCL3 may be associated with the onset of early diabetic retinal damage, and CCL15 and CCL21 may be closely related to the formation of fibrovascular membrane and the progression of the end stage of DR.
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Affiliation(s)
- Yunkao Zeng
- Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan Er Road, Yuexiu District, Guangzhou, Guangdong, China
- Shantou University Medical College, Shantou, China
| | - Dan Cao
- Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan Er Road, Yuexiu District, Guangzhou, Guangdong, China
| | - Honghua Yu
- Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan Er Road, Yuexiu District, Guangzhou, Guangdong, China
| | - Yunyan Hu
- Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan Er Road, Yuexiu District, Guangzhou, Guangdong, China
| | - Miao He
- Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan Er Road, Yuexiu District, Guangzhou, Guangdong, China
| | - Dawei Yang
- Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan Er Road, Yuexiu District, Guangzhou, Guangdong, China
- Shantou University Medical College, Shantou, China
| | - Xuenan Zhuang
- Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan Er Road, Yuexiu District, Guangzhou, Guangdong, China
- Shantou University Medical College, Shantou, China
| | - Liang Zhang
- Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan Er Road, Yuexiu District, Guangzhou, Guangdong, China.
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Abstract
Renal inflammation is the initial, healthy response to renal injury. However, prolonged inflammation promotes the fibrosis process, which leads to chronic pathology and eventually end-stage kidney disease. There are two major sources of inflammatory cells: first, bone marrow-derived leukocytes that include neutrophils, macrophages, fibrocytes and mast cells, and second, locally activated kidney cells such as mesangial cells, podocytes, tubular epithelial cells, endothelial cells and fibroblasts. These activated cells produce many profibrotic cytokines and growth factors that cause accumulation and activation of myofibroblasts, and enhance the production of the extracellular matrix. In particular, activated macrophages are key mediators that drive acute inflammation into chronic kidney disease. They produce large amounts of profibrotic factors and modify the microenvironment via a paracrine effect, and they also transdifferentiate to myofibroblasts directly, although the origin of myofibroblasts in the fibrosing kidney remains controversial. Collectively, understanding inflammatory cell functions and mechanisms during renal fibrosis is paramount to improving diagnosis and treatment of chronic kidney disease.
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Affiliation(s)
- Xiao-Ming Meng
- School of Pharmacy, Anhui Medical University, Hefei, Anhui, China.
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16
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Jha JC, Ho F, Dan C, Jandeleit-Dahm K. A causal link between oxidative stress and inflammation in cardiovascular and renal complications of diabetes. Clin Sci (Lond) 2018; 132:1811-36. [PMID: 30166499 DOI: 10.1042/CS20171459] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/22/2018] [Accepted: 07/26/2018] [Indexed: 12/14/2022]
Abstract
Chronic renal and vascular oxidative stress in association with an enhanced inflammatory burden are determinant processes in the development and progression of diabetic complications including cardiovascular disease (CVD), atherosclerosis and diabetic kidney disease (DKD). Persistent hyperglycaemia in diabetes mellitus increases the production of reactive oxygen species (ROS) and activates mediators of inflammation as well as suppresses antioxidant defence mechanisms ultimately contributing to oxidative stress which leads to vascular and renal injury in diabetes. Furthermore, there is increasing evidence that ROS, inflammation and fibrosis promote each other and are part of a vicious connection leading to development and progression of CVD and kidney disease in diabetes.
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Xin R, Sun X, Wang Z, Yuan W, Jiang W, Wang L, Xiang Y, Zhang H, Li X, Hou Y, Sun W, Du P. Apocynin inhibited NLRP3/XIAP signalling to alleviate renal fibrotic injury in rat diabetic nephropathy. Biomed Pharmacother 2018; 106:1325-31. [PMID: 30119203 DOI: 10.1016/j.biopha.2018.07.036] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/06/2018] [Accepted: 07/07/2018] [Indexed: 12/27/2022] Open
Abstract
AIMS In this animal study, we tried to test the hypothesis that apocynin could play an anti-inflammation role by inhibiting NLRP3/X-linked inhibitor of apoptosis protein (XIAP) signalling and have an effect on antifibrosis in rats with diabetic nephropathy. MAIN METHODS Diabetic nephropathy rats were induced by tail-vein injection of streptozotocin at 60 mg/kg body weight in sodium citrate buffer (0.01 M, pH 4.5) with unrestricted access to food/water for 12 weeks, and rats with blood glucose levels above 18.0 mM were considered diabetic; the damage index for glomerular mesangial cells damage index was calculated by morphological examinations; protein and mRNA changes were analysed by western blotting immunohistochemistry and real-time quantitative polymerase chain reaction; interstitial fibrosis was assessed and scored using Masson's staining. KEY FINDINGS In rats with diabetic nephropathy, apocynin (1) reduced renal injury and improved renal function; (2) downregulated the expression of NLRP3 in renal cortex; (3) downregulated the expression of XIAP in renal cortex; and (4) attenuated renal fibrosis. SIGNIFICANCE As an inhibitor of reactive oxygen species (ROS), apocynin could downregulate the expression of NLRP3 and XIAP, and alleviate renal fibrosis, which meant not only that ROS was one type of ligands of NLRP3, but also that ROS mechanism and NLRP3 activation might be therapeutic targets in the treatment of diabetic nephropathy in the future.
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Wakui H, Sumida K, Fujita M, Ohtomo Y, Ohsawa M, Kobayashi R, Uneda K, Azushima K, Haruhara K, Yatsu K, Hirawa N, Minegishi S, Ishigami T, Umemura S, Tamura K. Enhancement of intrarenal plasma membrane calcium pump isoform 1 expression in chronic angiotensin II-infused mice. Physiol Rep 2017; 5:5/11/e13316. [PMID: 28611155 PMCID: PMC5471448 DOI: 10.14814/phy2.13316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 05/13/2017] [Accepted: 05/15/2017] [Indexed: 12/24/2022] Open
Abstract
Plasma membrane calcium pump isoform 1 (PMCA1) is encoded by ATPase plasma membrane Ca2+transporting 1 (ATP2B1), the most likely candidate gene responsible for hypertension. Although PMCA1 is highly expressed in the kidney, little is known about regulation of its renal expression in various pathological conditions in vivo. Our study was designed to elucidate regulation of renal PMCA1 expression in mice. We employed three mouse models for kidney disease. These were the unilateral ureteral obstruction (UUO), the remnant kidney using 5/6 nephrectomy, and chronic angiotensin II administration models. Mice were assessed for systolic blood pressure and renal injury in accordance with the damage induced in the specific model. Kidney PMCA1 mRNA levels were measured in all mice. The UUO model showed renal fibrosis but no changes in blood pressure or renal PMCA1 mRNA expression. Similarly, the 5/6 nephrectomy model exhibited declined renal function without changes in blood pressure or renal PMCA1 mRNA expression. In contrast, chronic angiotensin II administration increased albuminuria and blood pressure as well as significantly increasing renal PMCA1 mRNA and protein expression. These results suggest that renal PMCA1 has a role as one of the molecules involved in angiotensin II-induced hypertension and kidney injury.
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Affiliation(s)
- Hiromichi Wakui
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Koichiro Sumida
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Megumi Fujita
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Yuta Ohtomo
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Masato Ohsawa
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Ryu Kobayashi
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Kazushi Uneda
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Kengo Azushima
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Kotaro Haruhara
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Keisuke Yatsu
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Nobuhito Hirawa
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Shintaro Minegishi
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Tomoaki Ishigami
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Satoshi Umemura
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Kouichi Tamura
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
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Loboda A, Stachurska A, Podkalicka P, Sobczak M, Mucha O, Witalisz-siepracka A, Jozkowicz A, Dulak J. Effect of heme oxygenase-1 on ochratoxin A-induced nephrotoxicity in mice. Int J Biochem Cell Biol 2017; 84:46-57. [DOI: 10.1016/j.biocel.2017.01.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 01/05/2017] [Accepted: 01/06/2017] [Indexed: 11/19/2022]
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Abstract
This chapter provides an introduction to pericyte physiology. Pericytes are smooth muscle-like cells that wrap around vessels and arterioles. Here, we discuss their structure, function, contractility and interaction with other cells including immune cells and finally their role in pathological processes. Additionally, we discuss recent studies describing pericyte populations in the heart and their potential as targets for future cardiac therapeutic interventions.
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Gerarduzzi C, Di Battista JA. Myofibroblast repair mechanisms post-inflammatory response: a fibrotic perspective. Inflamm Res. 2017;66:451-465. [PMID: 28040859 DOI: 10.1007/s00011-016-1019-x] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 12/10/2016] [Accepted: 12/15/2016] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION Fibrosis is a complex chronic disease characterized by a persistent repair response. Its pathogenesis is poorly understood but it is typically the result of chronic inflammation and maintained with the required activity of transforming growth factor-β (TGFβ) and extracellular matrix (ECM) tension, both of which drive fibroblasts to transition into a myofibroblast phenotype. FINDINGS As the effector cells of repair, myofibroblasts migrate to the site of injury to deposit excessive amounts of matrix proteins and stimulate high levels of contraction. Myofibroblast activity is a decisive factor in whether a tissue is properly repaired by controlled wound healing or rendered fibrotic by deregulated repair. Extensive studies have documented the various contributing factors to an abrogated repair response. Though these fibrotic factors are known, very little is understood about the opposing antifibrotic molecules that assist in a successful repair, such as prostaglandin E2 (PGE2) and ECM retraction. The following review will discuss the general development of fibrosis through the transformation of myofibroblasts, focusing primarily on the prominent profibrotic pathways of TGFβ and ECM tension and antifibrotic pathways of PGE2 and ECM retraction. CONCLUSIONS The idea is to understand the ways in which the cell, after an injury and inflammatory response, normally controls its repair mechanisms through its homeostatic regulators so as to mimic them therapeutically to control abnormal pathways.
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Wang X, Zhao W, Ransohoff RM, Zhou L. Identification and Function of Fibrocytes in Skeletal Muscle Injury Repair and Muscular Dystrophy. J Immunol 2016; 197:4750-4761. [PMID: 27913649 DOI: 10.4049/jimmunol.1601308] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 10/07/2016] [Indexed: 01/18/2023]
Abstract
We identified and characterized the function of CD45+/collagen I+ fibrocytes in acutely injured skeletal muscle of wild-type (WT) and Ccr2-/- mice, and in quadriceps and diaphragm muscles of mdx5cv mice, a mouse model for Duchenne muscular dystrophy. Fibrocytes were not detected in peripheral blood of WT mice after acute muscle injury or mdx5cv mice. Fibrocytes were detected in acutely injured muscles and in mdx5cv quadriceps and diaphragm muscles. These cells expressed F4/80 and CCR2, and they were mostly Ly6Clo They expressed a low level of collagens but a high level of profibrotic growth factors as compared with i.m. fibroblasts. Fibrocyte expression of collagens and profibrotic growth factors was not increased in Ccr2-/- mice as compared with WT controls. Fibrocyte expression of both proinflammatory and profibrotic cytokines was significantly higher in mdx5cv diaphragm than in mdx5cv quadriceps. In cocultures, fibrocytes from the mdx5cv diaphragm stimulated a higher level of fibroblast expression of extracellular matrix genes than did those from the mdx5cv quadriceps. Our findings suggest that i.m. fibrocytes most likely originate from infiltrating monocytes/macrophages and differentiate within injured muscles. They likely contribute to the normal muscle injury repair by producing growth factors. They do not appear to contribute to the persistent muscle fibrosis associated with poor injury repair in Ccr2-/- mice. However, they likely contribute to the persistent inflammation and progressive fibrosis in the mdx5cv diaphragm.
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Affiliation(s)
- Xingyu Wang
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029; and
| | - Wanming Zhao
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029; and
| | | | - Lan Zhou
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029; and
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Abstract
Intrarenal oxidative stress plays a critical role in the initiation and progression of diabetic kidney disease (DKD). Enhanced oxidative stress results from overproduction of reactive oxygen species (ROS) in the context of concomitant, insufficient antioxidant pathways. Renal ROS production in diabetes is predominantly mediated by various NADPH oxidases (NOXs), but a defective antioxidant system as well as mitochondrial dysfunction may also contribute. Recent Advances: Effective agents targeting the source of ROS generation hold the promise to rescue the kidney from oxidative damage and prevent subsequent progression of DKD. Critical Issues and Future Directions: In the present review, we summarize and critically analyze molecular and cellular mechanisms that have been demonstrated to be involved in NOX-induced renal injury in diabetes, with particular focus on the role of increased glomerular injury, the development of albuminuria, and tubulointerstitial fibrosis, as well as mitochondrial dysfunction. Furthermore, novel agents targeting NOX isoforms are discussed. Antioxid. Redox Signal. 25, 657-684.
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Affiliation(s)
- Jay C Jha
- 1 Diabetic Complications Division, JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Baker IDI Heart and Diabetes Institute , Melbourne, Australia
| | - Claudine Banal
- 1 Diabetic Complications Division, JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Baker IDI Heart and Diabetes Institute , Melbourne, Australia
| | - Bryna S M Chow
- 1 Diabetic Complications Division, JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Baker IDI Heart and Diabetes Institute , Melbourne, Australia
| | - Mark E Cooper
- 1 Diabetic Complications Division, JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Baker IDI Heart and Diabetes Institute , Melbourne, Australia .,2 Department of Medicine, Monash University , Melbourne, Australia
| | - Karin Jandeleit-Dahm
- 1 Diabetic Complications Division, JDRF Danielle Alberti Memorial Centre for Diabetic Complications, Baker IDI Heart and Diabetes Institute , Melbourne, Australia .,2 Department of Medicine, Monash University , Melbourne, Australia
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Braga TT, Correa-Costa M, Azevedo H, Silva RC, Cruz MC, Almeida MES, Hiyane MI, Moreira-Filho CA, Santos MF, Perez KR, Cuccovia IM, Camara NOS. Early infiltration of p40IL12(+)CCR7(+)CD11b(+) cells is critical for fibrosis development. Immun Inflamm Dis 2016; 4:300-14. [PMID: 27621813 PMCID: PMC5004285 DOI: 10.1002/iid3.114] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 06/22/2016] [Accepted: 06/23/2016] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Macrophages are heterogeneous and thus can be correlated with distinct tissue outcomes after injury. Conflicting data have indicated that the M2-related phenotype directly triggers fibrosis. Conversely, we hypothesize here that the inflammatory milieu provided by early infiltration of pro-inflammatory macrophages dictates tissue scarring after injury. METHODS AND RESULTS We first determined that tissue-localized macrophages exhibit a pro-inflammatory phenotype (p40IL12(+)CCR7(+)CD11b(+)) during the early phase of a chronic injury model, in contrast to a pro-resolving phenotype (Arg1(+)IL10(+)CD206(+)CD11b(+)) at a later stage. Then, we evaluated the effects of injecting macrophages differentiated in vitro in the presence of IFNγ + LPS or IL4 + IL13 or non-differentiated macrophages (hereafter, M0) on promoting inflammation and progression of chronic injury in macrophage-depleted mice. In addition to enhancing the expression of pro-inflammatory cytokines, the injection of M (IFNγ + LPS), but not M (IL4 + IL13) or M0, accentuated fibrosis while augmenting levels of anti-inflammatory molecules, increasing collagen deposition and impairing organ function. We observed a similar profile after injection of sorted CCR7(+)CD11b(+) cells and a more pronounced effect of M (IFNγ + LPS) cells originated from Stat6(-/-) mice. The injection of M (IFNγ + LPS) cells was associated with the up-regulation of inflammation- and fibrosis-related proteins (Thbs1, Mmp7, Mmp8, and Mmp13). CONCLUSIONS Our results suggest that pro-inflammatory macrophages promote microenvironmental changes that may lead to fibrogenesis by inducing an inflammatory milieu that alters a network of extracellular-related genes, culminating in tissue fibrosis.
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Affiliation(s)
- Tarcio Teodoro Braga
- Laboratory of Transplantation Immunobiology, Department of Immunology Institute of Biomedical Sciences IV, University of São Paulo (USP) São Paulo Brazil
| | - Matheus Correa-Costa
- Laboratory of Transplantation Immunobiology, Department of Immunology Institute of Biomedical Sciences IV, University of São Paulo (USP) São Paulo Brazil
| | - Hatylas Azevedo
- Department of Pediatrics Faculdade de Medicina da Universidade de São Paulo (FMUSP) São Paulo Brazil
| | - Reinaldo Correia Silva
- Laboratory of Transplantation Immunobiology, Department of Immunology Institute of Biomedical Sciences IV, University of São Paulo (USP) São Paulo Brazil
| | - Mario Costa Cruz
- Laboratory of Transplantation Immunobiology, Department of Immunology Institute of Biomedical Sciences IV, University of São Paulo (USP) São Paulo Brazil
| | | | - Meire Ioshie Hiyane
- Laboratory of Transplantation Immunobiology, Department of Immunology Institute of Biomedical Sciences IV, University of São Paulo (USP) São Paulo Brazil
| | | | - Marinilce Fagundes Santos
- Department of Cellular Biology-Institute of Biomedical Sciences University of São Paulo (USP) São Paulo Brazil
| | - Katia Regina Perez
- Department of Biochemistry-Institute of Chemistry University of São Paulo (USP) São Paulo Brazil
| | - Iolanda Midea Cuccovia
- Department of Biochemistry-Institute of Chemistry University of São Paulo (USP) São Paulo Brazil
| | - Niels Olsen Saraiva Camara
- Laboratory of Transplantation Immunobiology, Department of ImmunologyInstitute of Biomedical Sciences IV, University of São Paulo (USP)São PauloBrazil; Laboratory of Clinical and Experimental Immunology, Division of NephrologyFederal University of São Paulo (UNIFESP)São PauloBrazil; Renal Pathophysiology Laboratory (LIM16)Faculty of Medicine, University of São PauloSão PauloBrazil
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Abstract
Transforming growth factor-β (TGF-β) is the primary factor that drives fibrosis in most, if not all, forms of chronic kidney disease (CKD). Inhibition of the TGF-β isoform, TGF-β1, or its downstream signalling pathways substantially limits renal fibrosis in a wide range of disease models whereas overexpression of TGF-β1 induces renal fibrosis. TGF-β1 can induce renal fibrosis via activation of both canonical (Smad-based) and non-canonical (non-Smad-based) signalling pathways, which result in activation of myofibroblasts, excessive production of extracellular matrix (ECM) and inhibition of ECM degradation. The role of Smad proteins in the regulation of fibrosis is complex, with competing profibrotic and antifibrotic actions (including in the regulation of mesenchymal transitioning), and with complex interplay between TGF-β/Smads and other signalling pathways. Studies over the past 5 years have identified additional mechanisms that regulate the action of TGF-β1/Smad signalling in fibrosis, including short and long noncoding RNA molecules and epigenetic modifications of DNA and histone proteins. Although direct targeting of TGF-β1 is unlikely to yield a viable antifibrotic therapy due to the involvement of TGF-β1 in other processes, greater understanding of the various pathways by which TGF-β1 controls fibrosis has identified alternative targets for the development of novel therapeutics to halt this most damaging process in CKD.
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Maissen-Villiger CA, Schweighauser A, van Dorland HA, Morel C, Bruckmaier RM, Zurbriggen A, Francey T. Expression Profile of Cytokines and Enzymes mRNA in Blood Leukocytes of Dogs with Leptospirosis and Its Associated Pulmonary Hemorrhage Syndrome. PLoS One 2016; 11:e0148029. [PMID: 26824356 DOI: 10.1371/journal.pone.0148029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Accepted: 01/12/2016] [Indexed: 12/18/2022] Open
Abstract
Background Dogs with leptospirosis show similar organ manifestations and disease course as human patients, including acute kidney injury and pulmonary hemorrhage, making this naturally-occurring infection a good animal model for human leptospirosis. Expression patterns of cytokines and enzymes have been correlated with disease manifestations and clinical outcome in humans and animals. The aim of this study was to describe mRNA expression of pro- and anti-inflammatory mediators in canine leptospirosis and to compare it with other renal diseases to identify patterns characterizing the disease and especially its pulmonary form. Methodology and Principal Findings The mRNA abundance of cytokines (IL-1α, IL-1β, IL-8, IL-10, TNF-α, TGF-β) and enzymes (5-LO, iNOS) was measured prospectively in blood leukocytes from 34 dogs with severe leptospirosis and acute kidney injury, including 22 dogs with leptospirosis-associated pulmonary hemorrhages. Dogs with leptospirosis were compared to 14 dogs with acute kidney injury of other origin than leptospirosis, 8 dogs with chronic kidney disease, and 10 healthy control dogs. Canine leptospirosis was characterized by high 5-LO and low TNF-α expression compared to other causes of acute kidney injury, although the decreased TNF-α expression was also seen in chronic kidney disease. Leptospirosis-associated pulmonary hemorrhage was not characterized by a specific pattern, with only mild changes noted, including increased IL-10 and decreased 5-LO expression on some days in affected dogs. Fatal outcome from pulmonary hemorrhages was associated with low TNF-α, high IL-1β, and high iNOS expression, a pattern possibly expressed also in dogs with other forms of acute kidney injury. Conclusion The patterns of cytokine and enzyme expression observed in the present study indicate a complex pro- and anti-inflammatory response to the infection with leptospires. The recognition of these signatures may be of diagnostic and prognostic relevance for affected individuals and they may indicate options for newer therapies targeting the identified pathways.
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Taura K, Iwaisako K, Hatano E, Uemoto S. Controversies over the Epithelial-to-Mesenchymal Transition in Liver Fibrosis. J Clin Med 2016; 5:jcm5010009. [PMID: 26784242 PMCID: PMC4730134 DOI: 10.3390/jcm5010009] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/03/2016] [Accepted: 01/11/2016] [Indexed: 01/18/2023] Open
Abstract
Liver fibrosis is a universal consequence of chronic liver diseases. It is accompanied by activation of collagen-producing myofibroblasts, resulting in excessive deposition of extracellular matrix. The origin of myofibroblasts in the fibrotic liver has not been completely resolved and remains a matter of debate. Recently, the epithelial-to-mesenchymal transition (EMT) was proposed as one of the mechanisms that give rise to collagen-producing myofibroblasts in liver fibrosis. However, subsequent studies contradicted this hypothesis, and the EMT theory has become one of the most controversial and debatable issues in the field of liver fibrosis research. This review will summarize the existing literature on EMT in liver fibrosis and will analyze the causes for the contradictory results to draw a reasonable conclusion based on current knowledge in the field.
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Affiliation(s)
- Kojiro Taura
- Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
| | - Keiko Iwaisako
- Department of Target Therapy Oncology Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
| | - Etsuro Hatano
- Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
| | - Shinji Uemoto
- Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan.
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Jiang C, Shao Q, Jin B, Gong R, Zhang M, Xu B. Tanshinone IIA Attenuates Renal Fibrosis after Acute Kidney Injury in a Mouse Model through Inhibition of Fibrocytes Recruitment. Biomed Res Int 2015; 2015:867140. [PMID: 26885500 DOI: 10.1155/2015/867140] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 12/01/2015] [Indexed: 12/17/2022]
Abstract
Acute kidney injury (AKI) is associated with an increased risk of developing advanced chronic kidney disease (CKD). Yet, effective interventions to prevent this conversion are unavailable for clinical practice. In this study, we examined the beneficial effects of Tanshinone IIA on renal fibrosis in a mouse model of folic acid induced AKI. We found that Tanshinone IIA treatment significantly attenuated the folic acid elicited kidney dysfunction on days 3, 14, and 28. This effect was concomitant with a much lessened accumulation of fibronectin and collagen in tubulointerstitium 28 days after folic acid injury, denoting an ameliorated renal fibrosis. The kidney protective and antifibrotic effect of Tanshinone IIA was likely attributable to an early inhibition of renal recruitment of fibrocytes positive for both CD45 and collagen I. Mechanistically, Tanshinone IIA treatment not only markedly diminished renal expression of chemoattractants for fibrocytes such as TGFβ1 and MCP-1, but also significantly reduced circulating fibrocytes at the acute phase of kidney injury. These data suggested that Tanshinone IIA might be a novel therapy for preventing progression of CKD after AKI.
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Abstract
Chronic organ injury leads to fibrosis and eventually organ failure. Fibrosis is characterized by excessive synthesis, remodeling, and contraction of extracellular matrix produced by myofibroblasts. Myofibroblasts are the key cells in the pathophysiology of fibrotic disorders and their differentiation can be triggered by multiple stimuli. To develop anti-fibrotic therapies, it is of paramount importance to understand the molecular basis of the signaling pathways contributing to the activation and maintenance of myofibroblasts. Several signal transduction pathways, such as transforming growth factor (TGF)-β, Wingless/Int (WNT), and more recently yes-associated protein 1 (YAP)/transcriptional coactivator with PDZ-binding motif (TAZ) signaling, have been linked to the pathophysiology of fibrosis. Activation of the TGF-β1-induced SMAD complex results in the upregulation of genes important for myofibroblast function. Similarly, WNT-stabilized β-catenin translocates to the nucleus and initiates transcription of its target genes. YAP and TAZ are two transcriptional co-activators from the Hippo signaling pathway that also rely on nuclear translocation for their functioning. These three signal transduction pathways have little molecular similarity but do share one principle: the cytosolic/nuclear regulation of its transcriptional activators. Past research on these pathways often focused on the isolated cascades without taking other signaling pathways into account. Recent developments show that parts of these pathways converge into an intricate network that governs the activation and maintenance of the myofibroblast phenotype. In this review, we discuss the current understanding on the signal integration between the TGF-β, WNT, and YAP/TAZ pathways in the development of organ fibrosis. Taking a network-wide view on signal transduction will provide a better understanding on the complex and versatile processes that underlie the pathophysiology of fibrotic disorders.
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Affiliation(s)
- Bram Piersma
- Matrix Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen , Groningen , Netherlands
| | - Ruud A Bank
- Matrix Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen , Groningen , Netherlands
| | - Miriam Boersema
- Matrix Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen , Groningen , Netherlands
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30
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Abstract
Chronic organ injury leads to fibrosis and eventually organ failure. Fibrosis is characterized by excessive synthesis, remodeling, and contraction of extracellular matrix produced by myofibroblasts. Myofibroblasts are the key cells in the pathophysiology of fibrotic disorders and their differentiation can be triggered by multiple stimuli. To develop anti-fibrotic therapies, it is of paramount importance to understand the molecular basis of the signaling pathways contributing to the activation and maintenance of myofibroblasts. Several signal transduction pathways, such as transforming growth factor (TGF)-β, Wingless/Int (WNT), and more recently yes-associated protein 1 (YAP)/transcriptional coactivator with PDZ-binding motif (TAZ) signaling, have been linked to the pathophysiology of fibrosis. Activation of the TGF-β1-induced SMAD complex results in the upregulation of genes important for myofibroblast function. Similarly, WNT-stabilized β-catenin translocates to the nucleus and initiates transcription of its target genes. YAP and TAZ are two transcriptional co-activators from the Hippo signaling pathway that also rely on nuclear translocation for their functioning. These three signal transduction pathways have little molecular similarity but do share one principle: the cytosolic/nuclear regulation of its transcriptional activators. Past research on these pathways often focused on the isolated cascades without taking other signaling pathways into account. Recent developments show that parts of these pathways converge into an intricate network that governs the activation and maintenance of the myofibroblast phenotype. In this review, we discuss the current understanding on the signal integration between the TGF-β, WNT, and YAP/TAZ pathways in the development of organ fibrosis. Taking a network-wide view on signal transduction will provide a better understanding on the complex and versatile processes that underlie the pathophysiology of fibrotic disorders.
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Affiliation(s)
- Bram Piersma
- Matrix Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen , Groningen , Netherlands
| | - Ruud A Bank
- Matrix Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen , Groningen , Netherlands
| | - Miriam Boersema
- Matrix Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen , Groningen , Netherlands
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Musumeci M, Vadalà G, Russo F, Pelacchi F, Lanotte A, Denaro V. Dupuytren's disease therapy: targeting the vicious cycle of myofibroblasts? Expert Opin Ther Targets 2015; 19:1677-87. [PMID: 26690790 DOI: 10.1517/14728222.2015.1068758] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Dupuytren's disease (DD) is a proliferative fibromatosis of the hand, which causes permanent flexion contracture of the digits and, ultimately, loss of function. The treatment of DD is complex and involves surgical and nonsurgical approaches, with the goal of removing the affected tissue. New biological targets are under investigation in order to develop innovative therapies. AREAS COVERED The etiology of DD is still unknown. Several authors who focused their studies on the genetics of DD recognized an inherited autosomal dominant pattern. Actually, DD is a multifactorial and complex disease. Myofibroblasts are thought to play a crucial role in its pathogenesis, although their origin is not clear. EXPERT OPINION There is a general consensus that a better understanding of cellular and molecular mechanisms of DD will lead to the design of more specific and effective treatment alternatives. In this review, the authors hypothesize a new biological model for DD pathology, where myofibroblasts enhance the reservoir of the disease acting as if in a vicious cycle. This could help, ultimately, in identifying new therapeutic strategies to treat this common and disabling fibroproliferative disorder.
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Affiliation(s)
- Maria Musumeci
- a 1 Campus Bio-Medico University of Rome, Department of Orthopaedic and Trauma Surgery , Via Alvaro del Portillo 200, 00128 Rome, Italy +39 06 2254111192 ; +39 06 225411638 ;
| | - Gianluca Vadalà
- a 1 Campus Bio-Medico University of Rome, Department of Orthopaedic and Trauma Surgery , Via Alvaro del Portillo 200, 00128 Rome, Italy +39 06 2254111192 ; +39 06 225411638 ; .,b 2 Cell Factory, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico , Milan, Italy
| | - Fabrizio Russo
- a 1 Campus Bio-Medico University of Rome, Department of Orthopaedic and Trauma Surgery , Via Alvaro del Portillo 200, 00128 Rome, Italy +39 06 2254111192 ; +39 06 225411638 ;
| | - Federica Pelacchi
- a 1 Campus Bio-Medico University of Rome, Department of Orthopaedic and Trauma Surgery , Via Alvaro del Portillo 200, 00128 Rome, Italy +39 06 2254111192 ; +39 06 225411638 ;
| | - Angela Lanotte
- a 1 Campus Bio-Medico University of Rome, Department of Orthopaedic and Trauma Surgery , Via Alvaro del Portillo 200, 00128 Rome, Italy +39 06 2254111192 ; +39 06 225411638 ;
| | - Vincenzo Denaro
- a 1 Campus Bio-Medico University of Rome, Department of Orthopaedic and Trauma Surgery , Via Alvaro del Portillo 200, 00128 Rome, Italy +39 06 2254111192 ; +39 06 225411638 ;
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32
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Liu C, Mei W, Tang J, Yuan Q, Huang L, Lu M, Wu L, Peng Z, Meng J, Yang H, Shen H, Lv B, Hu G, Tao L. Mefunidone attenuates tubulointerstitial fibrosis in a rat model of unilateral ureteral obstruction. PLoS One 2015; 10:e0129283. [PMID: 26042668 PMCID: PMC4456380 DOI: 10.1371/journal.pone.0129283] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 05/06/2015] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Inflammation has a crucial role in renal interstitial fibrosis, which is the common pathway of chronic kidney diseases. Mefunidone (MFD) is a new compound which could effectively inhibit the proliferation of renal fibroblasts in vitro. However, the overall effect of Mefunidone in renal fibrosis remains unknown. METHODS Sprague-Dawley rats were randomly divided intro 6 groups: sham operation, unilateral ureteral obstruction (UUO), UUO/Mefunidone (25, 50, 100mg/kg/day) and UUO/PFD (500mg/kg/day). The rats were sacrificed respectively on days 3, 7, and 14 after the operation. Tubulointerstitial injury index, interstitial collagen deposition, expression of fibronectin (FN), α-smooth muscle actin (α-SMA), type I and III collagen and the number of CD3+ and CD68+ cells were determined. The expressions of proinflammatory cytokines, p-ERK, p-IκB, and p-STAT3 were measured in human renal proximal tubular epithelial cells of HK-2 or macrophages. RESULTS Mefunidone treatment significantly attenuated tubulointerstitial injury, interstitial collagen deposition, expression of FN, α-SMA, type I and III collagen in the obstructive kidneys, which correlated with significantly reduced the number of T cells and macrophages in the obstructive kidneys. Mechanistically, Mefunidone significantly inhibited tumor necrosis factor-α (TNF-α-) or lipopolysaccharide (LPS)-induced production of proinflammatory cytokines. This effect is possibly due to the inhibition of phosphorylation of ERK, IκB, and STAT3. CONCLUSION Mefunidone treatment attenuated tubulointerstitial fibrosis in a rat model of UUO, at least in part, through inhibition of inflammation.
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Affiliation(s)
- Chunyan Liu
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Department of Pathology, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Wenjuan Mei
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Juan Tang
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qiongjing Yuan
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ling Huang
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Miaomiao Lu
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lin Wu
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhangzhe Peng
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jie Meng
- Department of Respiration, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Huixiang Yang
- Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hong Shen
- Institute of Medical Sciences, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ben Lv
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Gaoyun Hu
- Department of Medical Chemistry, School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - Lijian Tao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- State Key Laboratory of Medical Genetics of China, Central South University, Changsha, Hunan, China
- * E-mail:
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Li J, Ren J, Liu X, Jiang L, He W, Yuan W, Yang J, Dai C. Rictor/mTORC2 signaling mediates TGFβ1-induced fibroblast activation and kidney fibrosis. Kidney Int 2015; 88:515-27. [PMID: 25970154 DOI: 10.1038/ki.2015.119] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 02/23/2015] [Accepted: 02/26/2015] [Indexed: 02/06/2023]
Abstract
The mammalian target of rapamycin (mTOR) was recently identified in two structurally distinct multiprotein complexes: mTORC1 and mTORC2. Previously, we found that Rictor/mTORC2 protects against cisplatin-induced acute kidney injury, but the role and mechanisms for Rictor/mTORC2 in TGFβ1-induced fibroblast activation and kidney fibrosis remains unknown. To study this, we initially treated NRK-49F cells with TGFβ1 and found that TGFβ1 could activate Rictor/mTORC2 signaling in cultured cells. Blocking Rictor/mTORC2 signaling with Rictor or Akt1 small interfering RNAs markedly inhibited TGFβ1-induced fibronection and α-smooth muscle actin expression. Ensuing western blotting or immunostaining results showed that Rictor/mTORC2 signaling was activated in kidney interstitial myofibroblasts from mice with unilateral ureteral obstruction. Next, a mouse model with fibroblast-specific deletion of Rictor was generated. These knockout mice were normal at birth and had no obvious kidney dysfunction or kidney morphological abnormality within 2 months of birth. Compared with control littermates, the kidneys of Rictor knockout mice developed less interstitial extracellular matrix deposition and inflammatory cell infiltration at 1 or 2 weeks after ureteral obstruction. Thus our study suggests that Rictor/mTORC2 signaling activation mediates TGFβ1-induced fibroblast activation and contributes to the development of kidney fibrosis. This may provide a therapeutic target for chronic kidney diseases.
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Abstract
TGF-β (transforming growth factor-β) is well identified as a central mediator in renal fibrosis. TGF-β initiates canonical and non-canonical pathways to exert multiple biological effects. Among them, Smad signaling is recognized as a major pathway of TGF-β signaling in progressive renal fibrosis. During fibrogenesis, Smad3 is highly activated, which is associated with the down-regulation of an inhibitory Smad7 via an ubiquitin E3-ligases-dependent degradation mechanism. The equilibrium shift between Smad3 and Smad7 leads to accumulation and activation of myofibroblasts, overproduction of ECM (extracellular matrix), and reduction in ECM degradation in the diseased kidney. Therefore, overexpression of Smad7 has been shown to be a therapeutic agent for renal fibrosis in various models of kidney diseases. In contrast, another downstream effecter of TGF-β/Smad signaling pathway, Smad2, exerts its renal protective role by counter-regulating the Smad3. Furthermore, recent studies demonstrated that Smad3 mediates renal fibrosis by down-regulating miR-29 and miR-200 but up-regulating miR-21 and miR-192. Thus, overexpression of miR-29 and miR-200 or down-regulation of miR-21 and miR-192 is capable of attenuating Smad3-mediated renal fibrosis in various mouse models of chronic kidney diseases (CKD). Taken together, TGF-β/Smad signaling plays an important role in renal fibrosis. Targeting TGF-β/Smad3 signaling may represent a specific and effective therapy for CKD associated with renal fibrosis.
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Affiliation(s)
- Xiao-Ming Meng
- School of Pharmacy, Anhui Medical University Hefei, China
| | - Patrick Ming-Kuen Tang
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong Hong Kong, China ; Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong Hong Kong, China
| | - Jun Li
- School of Pharmacy, Anhui Medical University Hefei, China
| | - Hui Yao Lan
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong Hong Kong, China ; Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong Hong Kong, China ; Shenzhen Research Institute, The Chinese University of Hong Kong Shenzhen, China
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Xu J, Cong M, Park TJ, Scholten D, Brenner DA, Kisseleva T. Contribution of bone marrow-derived fibrocytes to liver fibrosis. Hepatobiliary Surg Nutr 2015; 4:34-47. [PMID: 25713803 DOI: 10.3978/j.issn.2304-3881.2015.01.01] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 12/26/2014] [Indexed: 12/17/2022]
Abstract
Since the discovery of fibrocytes in 1994 by Dr. Bucala and colleagues, these bone marrow (BM)-derived collagen Type I producing CD45(+) cells remain the most fascinating cells of the hematopoietic system. Despite recent reports on the emerging contribution of fibrocytes to fibrosis of parenchymal and non-parenchymal organs and tissues, fibrocytes remain the most understudied pro-fibrogenic cellular population. In the past years fibrocytes were implicated in the pathogenesis of liver, skin, lung, and kidney fibrosis by giving rise to collagen type I producing cells/myofibroblasts. Hence, the role of fibrocytes in fibrosis is not well defined since different studies often contain controversial results on the number of fibrocytes recruited to the site of injury versus the number of fibrocyte-derived myofibroblasts in the same fibrotic organ. Furthermore, many studies were based on the in vitro characterization of fibrocytes formed after outgrowth of BM and/or peripheral blood cultures. Therefore, the fibrocyte function(s) still remain(s) lack of understanding, mostly due to (I) the lack of mouse models that can provide complimentary in vivo real-time and cell fate mapping studies of the dynamic differentiation of fibrocytes and their progeny into collagen type I producing cells (and/or possibly, other cell types of the hematopoietic system); (II) the complexity of hematopoietic cell differentiation pathways in response to various stimuli; (III) the high plasticity of hematopoietic cells. Here we summarize the current understanding of the role of CD45(+) collagen type I(+) BM-derived cells in the pathogenesis of liver injury. Based on data obtained from various organs undergoing fibrogenesis or other type of chronic injury, here we also discuss the most recent evidence supporting the critical role of fibrocytes in the mediation of pro-fibrogenic and/or pro-inflammatory responses.
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Affiliation(s)
- Jun Xu
- 1 Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA ; 2 Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China ; 3 Department of Internal Medicine, Yonsei University College of Medicine, Seoul 120752, Korea ; 4 Department of Medicine III, University Hospital Aachen, Aachen 52074, Germany ; 5 Department of Surgery, University of California, San Diego, La Jolla, CA 92093, USA
| | - Min Cong
- 1 Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA ; 2 Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China ; 3 Department of Internal Medicine, Yonsei University College of Medicine, Seoul 120752, Korea ; 4 Department of Medicine III, University Hospital Aachen, Aachen 52074, Germany ; 5 Department of Surgery, University of California, San Diego, La Jolla, CA 92093, USA
| | - Tae Jun Park
- 1 Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA ; 2 Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China ; 3 Department of Internal Medicine, Yonsei University College of Medicine, Seoul 120752, Korea ; 4 Department of Medicine III, University Hospital Aachen, Aachen 52074, Germany ; 5 Department of Surgery, University of California, San Diego, La Jolla, CA 92093, USA
| | - David Scholten
- 1 Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA ; 2 Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China ; 3 Department of Internal Medicine, Yonsei University College of Medicine, Seoul 120752, Korea ; 4 Department of Medicine III, University Hospital Aachen, Aachen 52074, Germany ; 5 Department of Surgery, University of California, San Diego, La Jolla, CA 92093, USA
| | - David A Brenner
- 1 Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA ; 2 Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China ; 3 Department of Internal Medicine, Yonsei University College of Medicine, Seoul 120752, Korea ; 4 Department of Medicine III, University Hospital Aachen, Aachen 52074, Germany ; 5 Department of Surgery, University of California, San Diego, La Jolla, CA 92093, USA
| | - Tatiana Kisseleva
- 1 Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA ; 2 Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China ; 3 Department of Internal Medicine, Yonsei University College of Medicine, Seoul 120752, Korea ; 4 Department of Medicine III, University Hospital Aachen, Aachen 52074, Germany ; 5 Department of Surgery, University of California, San Diego, La Jolla, CA 92093, USA
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GENG XUCHANG, HU ZHOUPANG, LIAN GUOYONG. Erythropoietin ameliorates renal interstitial fibrosis via the inhibition of fibrocyte accumulation. Mol Med Rep 2015; 11:3860-5. [DOI: 10.3892/mmr.2015.3157] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 11/19/2014] [Indexed: 11/05/2022] Open
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Bhatnagar I, Kim S. Gliotoxin from Aspergillus fumigatus reverses epithelial to mesenchymal transition: Implications in renal fibrosis. Int J Med Microbiol 2015; 305:11-9. [DOI: 10.1016/j.ijmm.2014.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 09/02/2014] [Accepted: 09/27/2014] [Indexed: 11/20/2022] Open
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Cong M, Jia J. The Role of Fibrocytes in Fibrogenic Liver Diseases. Curr Pathobiol Rep 2014; 2:191-9. [DOI: 10.1007/s40139-014-0055-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Xu J, Liu X, Koyama Y, Wang P, Lan T, Kim IG, Kim IH, Ma HY, Kisseleva T. The types of hepatic myofibroblasts contributing to liver fibrosis of different etiologies. Front Pharmacol 2014; 5:167. [PMID: 25100997 PMCID: PMC4105921 DOI: 10.3389/fphar.2014.00167] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 06/25/2014] [Indexed: 01/18/2023] Open
Abstract
Liver fibrosis results from dysregulation of normal wound healing, inflammation, activation of myofibroblasts, and deposition of extracellular matrix (ECM). Chronic liver injury causes death of hepatocytes and formation of apoptotic bodies, which in turn, release factors that recruit inflammatory cells (neutrophils, monocytes, macrophages, and lymphocytes) to the injured liver. Hepatic macrophages (Kupffer cells) produce TGFβ1 and other inflammatory cytokines that activate Collagen Type I producing myofibroblasts, which are not present in the normal liver. Secretion of TGFβ1 and activation of myofibroblasts play a critical role in the pathogenesis of liver fibrosis of different etiologies. Although the composition of fibrogenic myofibroblasts varies dependent on etiology of liver injury, liver resident hepatic stellate cells and portal fibroblasts are the major source of myofibroblasts in fibrotic liver in both experimental models of liver fibrosis and in patients with liver disease. Several studies have demonstrated that hepatic fibrosis can reverse upon cessation of liver injury. Regression of liver fibrosis is accompanied by the disappearance of fibrogenic myofibroblasts followed by resorption of the fibrous scar. Myofibroblasts either apoptose or inactivate into a quiescent-like state (e.g., stop collagen production and partially restore expression of lipogenic genes). Resolution of liver fibrosis is associated with recruitment of macrophages that secrete matrix-degrading enzymes (matrix metalloproteinase, collagenases) and are responsible for fibrosis resolution. However, prolonged/repeated liver injury may cause irreversible crosslinking of ECM and formation of uncleavable collagen fibers. Advanced fibrosis progresses to cirrhosis and hepatocellular carcinoma. The current review will summarize the role and contribution of different cell types to populations of fibrogenic myofibroblasts in fibrotic liver.
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Affiliation(s)
- Jun Xu
- School of Medicine, University of California at San Diego La Jolla, CA, USA
| | - Xiao Liu
- School of Medicine, University of California at San Diego La Jolla, CA, USA
| | - Yukinori Koyama
- School of Medicine, University of California at San Diego La Jolla, CA, USA
| | - Ping Wang
- School of Medicine, University of California at San Diego La Jolla, CA, USA
| | - Tian Lan
- School of Medicine, University of California at San Diego La Jolla, CA, USA
| | - In-Gyu Kim
- School of Medicine, University of California at San Diego La Jolla, CA, USA
| | - In H Kim
- School of Medicine, University of California at San Diego La Jolla, CA, USA
| | - Hsiao-Yen Ma
- School of Medicine, University of California at San Diego La Jolla, CA, USA
| | - Tatiana Kisseleva
- School of Medicine, University of California at San Diego La Jolla, CA, USA
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Baker DW, Tsai YT, Weng H, Tang L. Alternative strategies to manipulate fibrocyte involvement in the fibrotic tissue response: pharmacokinetic inhibition and the feasibility of directed-adipogenic differentiation. Acta Biomater 2014; 10:3108-16. [PMID: 24657674 DOI: 10.1016/j.actbio.2014.03.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 02/17/2014] [Accepted: 03/11/2014] [Indexed: 01/21/2023]
Abstract
Fibrocytes have previously been identified as important mediators in several inflammatory and fibrotic diseases. However, there is no effective treatment thus far to reduce fibrotic tissue responses without affecting wound healing reactions. Here we investigate two strategies to alleviate fibrocyte interactions at the biomaterial interface, reducing collagen production and scar tissue formation. First, in an indirect approach, TGF-β inhibitor-SB431542 and IL-1β/TNF-α inhibitor SB203580 were locally released from scaffold implants to block their respective signaling pathways. We show that the inhibition of IL-1β/TNF-α has no influence on overall fibrotic tissue reactions to the implants. However, the reduction of localized TGF-β significantly decreases the fibrocyte accumulation and myofibroblast activation while reducing the fibrotic tissue formation. Since fibrocytes can be differentiated into non-fibrotic cell types, such as adipocytes, we further sought a more direct approach to reduce fibrocyte responses by directing fibrocyte differentiation into adipocytes. Interestingly, by initiating fibrocyte-to-adipocyte differentiation through sustained differentiation cocktail release, we find that adipogenic differentiation forces incoming fibrocytes away from the traditional myofibroblast lineage, leading to a substantial reduction in the collagen formation and fibrotic response. Our results support a novel and effective strategy to improve implant safety by reducing implant-associated fibrotic tissue reactions via directing non-fibrotic differentiation of fibrocytes.
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Iqbal SA, Hayton MJ, Watson JS, Szczypa P, Bayat A. First identification of resident and circulating fibrocytes in Dupuytren's disease shown to be inhibited by serum amyloid P and Xiapex. PLoS One 2014; 9:e99967. [PMID: 24933153 PMCID: PMC4059720 DOI: 10.1371/journal.pone.0099967] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 05/20/2014] [Indexed: 11/19/2022] Open
Abstract
Dupuytren's disease (DD) is a common progressive fibroproliferative disorder causing permanent digital contracture. Proliferative myofibroblasts are thought to be the cells responsible for DD initiation and recurrence, although their source remains unknown. DD tissue has also been shown to harbor mesenchymal and hematopoietic stem cells. Fibrocytes are circulating cells that show characteristics of fibroblasts and they express surface markers for both hematopoietic and mesenchymal stromal cells. Fibrocytes differentiate from peripheral CD14+ mononuclear cells, which can be inhibited by serum amyloid P (SAP). In this study we have demonstrated the presence of fibrocytes in DD blood and tissue, moreover we have evaluated the effects of SAP and Xiapex (Collagenase Clostridium histolyticum) on fibrocytes derived from DD. H&E staining showed typical Spindle shaped morphology of fibrocytes. FACS analysis based on a unique combination of 3 markers, revealed the increased presence of fibrocytes in blood and tissue of DD patients. Additionally, immunohistology of DD nodule and cord tissue showed the presence of collagen 1+/CD34+ cells. No difference in plasma SAP levels was observed between DD and control. Higher concentrations of SAP significantly inhibited fibrocytes differentiated from DD derived monocytes compared to control. DD fascia derived fibrocytes showed resistance to growth inhibition by SAP, particularly nodule derived fibrocytes showed robust growth even at higher SAP concentrations compared to control. DD derived fibrocytes were positive for typical fibrocyte dual markers, i.e. Collagen 1/LSP-1 and collagen 1/CD34. Xiapex was more effective in inhibiting the growth of nodule derived cells compared to commercially available collagenase A. Our results show for the first time the increased presence of fibrocytes in DD patient's blood and disease tissue compared to control tissue. Additionally, we evaluate the response of these fibrocytes to SAP and Xiapex therapy.
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Affiliation(s)
- Syed Amir Iqbal
- Plastic & Reconstructive Surgery Research, Manchester Institute of Biotechnology, University of Manchester, Manchester, United Kingdom
| | - Michael John Hayton
- Department of Hand and Upper Limb Surgery, Wrightington Hospital, Wrightington, United Kingdom
| | - James Stewart Watson
- Department of Plastic and Reconstructive Surgery, University Hospital South Manchester NHS Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
| | - Piotr Szczypa
- Medical Affairs Pfizer Ltd, Tadworth, Surrey, United Kingdom
| | - Ardeshir Bayat
- Plastic & Reconstructive Surgery Research, Manchester Institute of Biotechnology, University of Manchester, Manchester, United Kingdom
- Department of Plastic and Reconstructive Surgery, University Hospital South Manchester NHS Foundation Trust, Wythenshawe Hospital, Manchester, United Kingdom
- * E-mail:
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Abstract
Acute inflammation is a recognised part of normal wound healing. However, when inflammation fails to resolve and a chronic inflammatory response is established this process can become dysregulated resulting in pathological wound repair, accumulation of permanent fibrotic scar tissue at the site of injury and the failure to return the tissue to normal function. Fibrosis can affect any organ including the lung, skin, heart, kidney and liver and it is estimated that 45% of deaths in the western world can now be attributed to diseases where fibrosis plays a major aetiological role. In this review we examine the evidence that cytokines play a vital role in the acute and chronic inflammatory responses that drive fibrosis in injured tissues. This article is part of a Special Issue entitled: Fibrosis: Translation of basic research to human disease.
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Affiliation(s)
- Lee A Borthwick
- Tissue Fibrosis and Repair Group, Institute of Cellular Medicine, Medical School, Newcastle University, Newcastle Upon Tyne, NE2 4HH, UK; Immunopathogenesis Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
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Hagemann JH, Haegele H, Müller S, Anders HJ. Danger control programs cause tissue injury and remodeling. Int J Mol Sci 2013; 14:11319-46. [PMID: 23759985 DOI: 10.3390/ijms140611319] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 05/12/2013] [Accepted: 05/22/2013] [Indexed: 02/07/2023] Open
Abstract
Are there common pathways underlying the broad spectrum of tissue pathologies that develop upon injuries and from subsequent tissue remodeling? Here, we explain the pathophysiological impact of a set of evolutionary conserved danger control programs for tissue pathology. These programs date back to the survival benefits of the first multicellular organisms upon traumatic injuries by launching a series of danger control responses, i.e., 1. Haemostasis, or clotting to control bleeding; 2. Host defense, to control pathogen entry and spreading; 3. Re-epithelialisation, to recover barrier functions; and 4. Mesenchymal, to repair to regain tissue stability. Taking kidney pathology as an example, we discuss how clotting, inflammation, epithelial healing, and fibrosis/sclerosis determine the spectrum of kidney pathology, especially when they are insufficiently activated or present in an overshooting and deregulated manner. Understanding the evolutionary benefits of these response programs may refine the search for novel therapeutic targets to limit organ dysfunction in acute injuries and in progressive chronic tissue remodeling.
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Hara A, Sakai N, Furuichi K, Sakai Y, Takeya M, Bucala R, Mukaida N, Takuwa Y, Matsushima K, Kaneko S, Wada T. CCL2/CCR2 augments the production of transforming growth factor-beta1, type 1 collagen and CCL2 by human CD45-/collagen 1-positive cells under high glucose concentrations. Clin Exp Nephrol 2013; 17:793-804. [DOI: 10.1007/s10157-013-0796-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 03/11/2013] [Indexed: 12/19/2022]
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Guan Q, Li S, Gao S, Chen H, Nguan CYC, Du C. Reduction of chronic rejection of renal allografts by anti-transforming growth factor-β antibody therapy in a rat model. Am J Physiol Renal Physiol 2013; 305:F199-207. [PMID: 23552866 DOI: 10.1152/ajprenal.00665.2012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
There is no effective treatment for chronic rejection (CR) that largely limits long-term survival of kidney transplants. Transforming growth factor (TGF)-β is a fibrogenic factor for tissue fibrosis. This study was to test the efficacy of an anti-TGF-β antibody in preventing the CR of renal allografts in a preclinical model. Male Lewis rats (RT1¹) were orthotopically transplanted with donor kidneys from male Fischer 344 (RT11v1) rats and were treated with either anti-TGF-β or a control antibody. The CR of renal allografts was assessed by semiquantitative histological analyses, and intragraft cytokines and fibrosis-related genes ware examined by PCR arrays. Compared with the control antibody, anti-TGF-β antibody treatment significantly reduced recipients' proteinuria (P = 0.0002), and CR in renal transplants, which was indicated by the fewer injured renal tubules, glomeruli, and interlobular arterioles or arteries, and by less mononuclear cell infiltration and interstitial fibrosis in the anti-TGF-β antibody-treated group (P < 0.05), but not significantly attenuate the ratios of different infiltrating leukocytes. These pathological changes were associated with downregulation of TGF-β1, TGF-β2, and proinflammatory cytokines, or with upregulation of anti-fibrotic HGF, BMP5, and BMP7. The therapeutic effect of the anti-TGF-β antibody was further confirmed by its prevention of graft dysfunction, indicated by lower levels of serum creatinine and blood urea nitrogen or higher creatinine clearance in anti-TGF-β antibody-treated recipients compared with those in control recipients (P < 0.05). In conclusion, the anti-TGF-β antibody (1D11) treatment significantly reduces CR of renal allografts in rats, suggesting the therapeutic potential of this antibody therapy for treating CR of kidney transplants in patients.
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Affiliation(s)
- Qiunong Guan
- Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
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Kennedy‐Lydon TM, Crawford C, Wildman SSP, Peppiatt‐Wildman CM. Renal pericytes: regulators of medullary blood flow. Acta Physiol (Oxf) 2013; 207:212-25. [PMID: 23126245 PMCID: PMC3561688 DOI: 10.1111/apha.12026] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 07/03/2012] [Accepted: 09/27/2012] [Indexed: 01/29/2023]
Abstract
Regulation of medullary blood flow (MBF) is essential in maintaining normal kidney function. Blood flow to the medulla is supplied by the descending vasa recta (DVR), which arise from the efferent arterioles of juxtamedullary glomeruli. DVR are composed of a continuous endothelium, intercalated with smooth muscle-like cells called pericytes. Pericytes have been shown to alter the diameter of isolated and in situ DVR in response to vasoactive stimuli that are transmitted via a network of autocrine and paracrine signalling pathways. Vasoactive stimuli can be released by neighbouring tubular epithelial, endothelial, red blood cells and neuronal cells in response to changes in NaCl transport and oxygen tension. The experimentally described sensitivity of pericytes to these stimuli strongly suggests their leading role in the phenomenon of MBF autoregulation. Because the debate on autoregulation of MBF fervently continues, we discuss the evidence favouring a physiological role for pericytes in the regulation of MBF and describe their potential role in tubulo-vascular cross-talk in this region of the kidney. Our review also considers current methods used to explore pericyte activity and function in the renal medulla.
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Affiliation(s)
| | - C. Crawford
- Medway School of Pharmacy The Universities of Kent and Greenwich at Medway Kent UK
| | - S. S. P. Wildman
- Medway School of Pharmacy The Universities of Kent and Greenwich at Medway Kent UK
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Xie X, Zhu L, Fu Z, Guo X, Wang K, Hu X, Chen J. Low molecular weight heparin inhibits circulating fibrocytes differentiation by modulating neuronal nitric oxide synthase and TGF-β1/Smad pathway. Cell Physiol Biochem 2012. [PMID: 23207953 DOI: 10.1159/000343334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Circulating fibrocytes (CFs) have been placed at the center of a number of fibrosing conditions. Recently, attention has been drawn to the non-anticoagulant activities of low molecular weight heparin (LH), especially its anti-fibrotic effects. The purpose of this study was to investigate the effects of LH on CFs differentiation and possible underlying mechanisms. METHODS/RESULTS CFs were cultured from human peripheral blood mononuclear cells and identified by dual-immunofluorescence staining. Incubation with LH inhibited CFs trans-differentiation by upregulating CD34 and downregulating pro-Collagen I and a-SMA in a concentration- and time-dependent manner, all of which were detected by flow cytometry. Similar effects were observed after incubation with L-NAME, an inhibitor of NOS. NO production was measured by Griess methods and markedly decreased in CFs treated with LH. Three NOS isoforms were assessed by western blot and nNOS was the predominant isoform involved in this process. Additionally, LH and L-NAME had similar down-regulating effects on the expression of TGF-β1 and pSmad2/3, which indicated that TGF-β/Smad pathway might be a downstream signaling of nNOS/NO during LH treatment. CONCLUSION These results suggested that LH could exhibit anti-fibrotic effects by inhibiting CFs transdifferentiation, in which the involvement of nNOS/NO and TGF-β/Smad pathway were identified.
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Affiliation(s)
- Xudong Xie
- Department of Cardiovascular Diseases, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Abstract
Renal fibrosis is the culmination of processes driven by signaling pathways involving transforming growth factor-β family of cytokines, connective-tissue growth factor, nuclear factor κB, Wnt/β-catenin, Notch, and other growth factors. Many studies in experimental animal models have directly targeted these pathways and demonstrated efficacy in mitigating renal fibrosis. However, only a small fraction of these approaches have been attempted in human and even fewer have been successfully translated to clinical use for patient with kidney diseases. Drugs with proven efficacy for treatment of kidney diseases and tissue fibrosis exert some of their effects by interfering with components of these pathways. This review considers key molecular mediators of renal fibrosis and their potential as targets for treatment of renal fibrosis.
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Affiliation(s)
- Peter Y Chuang
- Division of Nephrology, Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1243, New York, NY 10029, USA.
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Wada T, Shimizu M, Yokoyama H, Iwata Y, Sakai Y, Kaneko S, Furuichi K. Nodular lesions and mesangiolysis in diabetic nephropathy. Clin Exp Nephrol 2013; 17:3-9. [PMID: 23100177 DOI: 10.1007/s10157-012-0711-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Accepted: 10/01/2012] [Indexed: 12/31/2022]
Abstract
Diabetic nephropathy is a leading cause of end-stage renal failure all over the world. Advanced human diabetic nephropathy is characterized by the presence of specific lesions including nodular lesions, doughnut lesions, and exudative lesions. Thus far, animal models precisely mimicking advanced human diabetic nephropathy, especially nodular lesions, remain to be fully established. Animal models with spontaneous diabetic kidney diseases or with inducible kidney lesions may be useful for investigating the pathogenesis of diabetic nephropathy. Based on pathological features, we previously reported that diabetic glomerular nodular-like lesions were formed during the reconstruction process of mesangiolysis. Recently, we established nodular-like lesions resembling those seen in advanced human diabetic nephropathy through vascular endothelial injury and mesangiolysis by administration of monocrotaline. Here, in this review, we discuss diabetic nodular lesions and its animal models resembling human diabetic kidney lesions, with our hypothesis that endothelial cell injury and mesangiolysis might be required for nodular lesions.
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Ratkaj I, Bujak M, Jurišić D, Baus Lončar M, Bendelja K, Pavelić K, Kraljević Pavelić S. Microarray analysis of Dupuytren's disease cells: the profibrogenic role of the TGF-β inducible p38 MAPK pathway. Cell Physiol Biochem 2012; 30:927-42. [PMID: 22965824 DOI: 10.1159/000341470] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2012] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Dupuytren's disease (DD) is a nodular palmar fibromatosis that causes irreversible permanent contracture of fingers and results in the loss of hand function. Surgery still remains the only available solution for DD patients but cannot permanently cure the disease nor reduce high recurrence rates. With this rationale, we designed a study aimed at an improved understanding of the molecular mechanisms underlying DD. Our major focus was an analysis of the global gene expression profile and signalling pathways in DD cells with the aim of identifying novel biomarkers and/or therapeutic targets. METHODS Primary cells were cultured from surgically removed diseased and healthy tissue. Microarray expression analysis (HG-U133A array, Affymetrix) and qPCR was performed with total RNA isolated from primary DD cells. Mechanistic studies involving inhibition of p38 phosphorylation were performed on normal human fibroblasts' and primary DD cells' in vitro models. Expression of stem cell markers in primary fibroblasts/myofibroblasts was assessed as well. RESULTS We identified 3 p38MAPK signalling pathway regulatory genes, THBS1, GADD45α and NUAK1, all involved in cellular proliferation and production of the extracellular matrix proteins. Inhibition of the p38MAPK signalling pathway induced down-regulation of myofibroblast markers, α-smooth muscle actin and palladin. A stem-cell like subpopulation positive for CD90 marker was identified among primary DD cells. CONCLUSION The study reveals involvement of the p38 MAPK pathway as a possible signalling cascade in the pathogenesis of Dupuytren's disease. Moreover, a particular stem cell-like CD90(+) subpopulation was identified that might contribute to DD development.
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Affiliation(s)
- Ivana Ratkaj
- University of Rijeka, Department of Biotechnology, Rijeka, Croatia
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