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Song T, Ding YY, Zhang T, Cai Q, Hu Y, Gu Q, Gu Z. Soybean-derived antihypertensive hydrolysates attenuate Ang II-induced renal damage by modulating MAPK and NF-κB signaling pathways. Food Funct 2024; 15:2485-2496. [PMID: 38334682 DOI: 10.1039/d3fo05247h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
Hypertension-induced kidney injury is considered a vital consequence of long-term and uncontrolled hypertension, which is commonly associated with an excessive accumulation of angiotensin II (Ang II) from hyperactivated RAS. Antihypertensive peptides have a significant effect on blood pressure regulation, but few studies have focused on the ameliorative function of antihypertensive peptides on renal injury. This study explored the effects of soybean protein-derived hydrolysate (SPH) on SHR and Ang II-induced HK-2 cells. SPH significantly attenuated blood pressure and alleviated renal pathological injury in SHRs after oral gavage administration. According to the pathological results, the kidneys of SHRs showed inflammation and SPH attenuated inflammatory cell infiltration in the kidneys of SHRs. Immunohistochemical analysis further revealed that SPH inhibited MCP-1 expression and increased Nrf2 expression in the kidneys. An in vitro HK-2 cell model demonstrated that SPH exhibited optimal activity for reducing Ang II-induced inflammatory cytokines and ROS overproduction. Mechanistically, SPH was observed to regulate MAPK/JNK and NF-κB signaling pathways. These findings indicate that potent antihypertensive SPH significantly ameliorates hypertension-induced kidney damage.
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Affiliation(s)
- Tianyuan Song
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, People's Republic of China.
- Key Laboratory for Food Microbial Technology of Zhejiang Province, College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, 310018, China
| | - Yin-Yi Ding
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, People's Republic of China.
- Key Laboratory for Food Microbial Technology of Zhejiang Province, College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, 310018, China
| | - Tiantian Zhang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, People's Republic of China.
| | - Qiaolin Cai
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, People's Republic of China.
| | - Yonghong Hu
- Institute of Surgery of Integrated Traditional Chinese and Western Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, China
| | - Qing Gu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, People's Republic of China.
- Key Laboratory for Food Microbial Technology of Zhejiang Province, College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, 310018, China
| | - Zhenyu Gu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, People's Republic of China.
- Key Laboratory for Food Microbial Technology of Zhejiang Province, College of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, 310018, China
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2
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Rajabi S, Saberi S, Najafipour H, Askaripour M, Rajizadeh MA, Shahraki S, Kazeminia S. Interaction of estradiol and renin-angiotensin system with microRNAs-21 and -29 in renal fibrosis: focus on TGF-β/smad signaling pathway. Mol Biol Rep 2024; 51:137. [PMID: 38236310 DOI: 10.1007/s11033-023-09127-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 12/06/2023] [Indexed: 01/19/2024]
Abstract
Kidney fibrosis is one of the complications of chronic kidney disease (CKD (and contributes to end-stage renal disease which requires dialysis and kidney transplantation. Several signaling pathways such as renin-angiotensin system (RAS), microRNAs (miRNAs) and transforming growth factor-β1 (TGF-β1)/Smad have a prominent role in pathophysiology and progression of renal fibrosis. Activation of classical RAS, the elevation of angiotensin II (Ang II) production and overexpression of AT1R, develop renal fibrosis via TGF-β/Smad pathway. While the non-classical RAS arm, Ang 1-7/AT2R, MasR reveals an anti-fibrotic effect via antagonizing Ang II. This review focused on studies illustrating the interaction of RAS with sexual female hormone estradiol and miRNAs in the progression of renal fibrosis with more emphasis on the TGF-β signaling pathway. MiRNAs, especially miRNA-21 and miRNA-29 showed regulatory effects in renal fibrosis. Also, 17β-estradiol (E2) is a renoprotective hormone that improved renal fibrosis. Beneficial effects of ACE inhibitors and ARBs are reported in the prevention of renal fibrosis in patients. Future studies are also merited to delineate the new therapy strategies such as miRNAs targeting, combination therapy of E2 or HRT, ACEis, and ARBs with miRNAs mimics and antagomirs in CKD to provide a new therapeutic approach for kidney patients.
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Affiliation(s)
- Soodeh Rajabi
- Student Research Committee, Kerman University of Medical Sciences, Kerman, Iran
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Shadan Saberi
- Department of Physiology and Pharmacology, Afzalipour Medical Faculty, Kerman University of Medical Sciences, Kerman, Iran
| | - Hamid Najafipour
- Cardiovascular Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
| | - Majid Askaripour
- Department of Physiology, School of Medicine, Bam University of Medical Sciences, Bam, Iran.
| | - Mohammad Amin Rajizadeh
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Sarieh Shahraki
- Department of Physiology and Pharmacology, School of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Sara Kazeminia
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
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Fang Y, Shen B, Dai Q, Xie Q, Wu W, Wang M. Orbital inflammatory pseudotumor: new advances in diagnosis, pathogenesis, and treatment. Eur J Med Res 2023; 28:395. [PMID: 37794419 PMCID: PMC10548690 DOI: 10.1186/s40001-023-01330-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 08/29/2023] [Indexed: 10/06/2023] Open
Abstract
Orbital inflammatory pseudotumor (OIP) is a benign, non-specific inflammatory disorder that commonly occurs in middle-aged adults and is usually unilateral but can occur bilaterally. Its clinical manifestations have tremendous clinical heterogeneity and vary according to the site of infiltration and the degree of lesions, including orbital pain, swelling, diplopia, proptosis, restricted eye movement, and decreased visual acuity. Clinical features, Image characteristics and pathological examinations often need to be evaluated to confirm the diagnosis. Currently, there is no systematic research on the pathogenesis of OIP, which may be related to immunity or infection. The first-line treatment is glucocorticoids. Radiotherapy, immunosuppressants, and biologics can be considered for treatment-resistant, hormone-dependent, or intolerant patients. In this review, we aim to summarize and focus on new insights into OIP, including new diagnostic criteria, pathogenesis, and discoveries in new drugs and treatment strategies. In particular, we highlight the literature and find that T cell-mediated immune responses are closely related to the pathogenesis of OIP. Further exploration of the mechanism and signaling pathway of T cells in the immune process will help to identify their therapeutic targets and carry out targeted therapy to treat refractory OIP and reduce the side effects of traditional treatments.
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Affiliation(s)
- Yenan Fang
- National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Bingyan Shen
- National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Qin Dai
- National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Qiqi Xie
- National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Wencan Wu
- National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China.
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China.
| | - Min Wang
- National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China.
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China.
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Patel SN, Fatima N, Ali R, Hussain T. Emerging Role of Angiotensin AT2 Receptor in Anti-Inflammation: An Update. Curr Pharm Des 2020; 26:492-500. [PMID: 31939729 DOI: 10.2174/1381612826666200115092015] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 11/21/2019] [Indexed: 12/16/2022]
Abstract
The hyperactive RAS and inflammation are closely associated. The angiotensin-II/AT1R axis of the RAS has been explored extensively for its role in inflammation and a plethora of pathological conditions. Understanding the role of AT2R in inflammation is an emerging area of research. The AT2R is expressed on a variety of immune and non-immune cells, which upon activation triggers the release of a host of cytokines and has multiple effects that coalesce to anti-inflammation and prevents maladaptive repair. The anti-inflammatory outcomes of AT2R activation are linked to its well-established signaling pathways involving formation of nitric oxide and activation of phosphatases. Collectively, these effects promote cell survival and tissue function. The consideration of AT2R as a therapeutic target requires further investigations.
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Affiliation(s)
- Sanket N Patel
- Department of Pharmacological & Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, United States
| | - Naureen Fatima
- Department of Pharmacological & Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, United States
| | - Riyasat Ali
- Department of Pharmacological & Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, United States
| | - Tahir Hussain
- Department of Pharmacological & Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, United States
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The Vascular Involvement in Soft Tissue Fibrosis-Lessons Learned from Pathological Scarring. Int J Mol Sci 2020; 21:ijms21072542. [PMID: 32268503 PMCID: PMC7177855 DOI: 10.3390/ijms21072542] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/27/2020] [Accepted: 04/01/2020] [Indexed: 02/06/2023] Open
Abstract
Soft tissue fibrosis in important organs such as the heart, liver, lung, and kidney is a serious pathological process that is characterized by excessive connective tissue deposition. It is the result of chronic but progressive accumulation of fibroblasts and their production of extracellular matrix components such as collagens. Research on pathological scars, namely, hypertrophic scars and keloids, may provide important clues about the mechanisms that drive soft tissue fibrosis, in particular the vascular involvement. This is because these dermal fibrotic lesions bear all of the fibrotic characteristics seen in soft tissue fibrosis. Moreover, their location on the skin surface means they are readily observable and directly treatable and therefore more accessible to research. We will focus here on the roles that blood vessel-associated cells play in cutaneous scar pathology and assess from the literature whether these cells also contribute to other soft tissue fibroses. These cells include endothelial cells, which not only exhibit aberrant functions but also differentiate into mesenchymal cells in pathological scars. They also include pericytes, hepatic stellate cells, fibrocytes, and myofibroblasts. This article will review with broad strokes the roles that these cells play in the pathophysiology of different soft tissue fibroses. We hope that this brief but wide-ranging overview of the vascular involvement in fibrosis pathophysiology will aid research into the mechanisms underlying fibrosis and that this will eventually lead to the development of interventions that can prevent, reduce, or even reverse fibrosis formation and/or progression.
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Zhu Y, Cui H, Lv J, Li G, Li X, Ye F, Zhong L. Angiotensin II triggers RIPK3-MLKL-mediated necroptosis by activating the Fas/FasL signaling pathway in renal tubular cells. PLoS One 2020; 15:e0228385. [PMID: 32134954 PMCID: PMC7058379 DOI: 10.1371/journal.pone.0228385] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 01/14/2020] [Indexed: 01/08/2023] Open
Abstract
Our earlier studies proved that RIPK3-mediated necroptosis might be an important mode of renal tubular cell death in rats with chronic renal injury and the necroptotic cell death can be triggered by tumor necrosis factor-α (TNF-α) in vitro, but the triggering role of angiotensin II (AngII), which exerts notable effects on renal cells for the initiation and progression of renal tubulointerstitial fibrosis, is largely unknown. Here, we identified the presence of necroptotic cell death in the tubular cells of AngII-induced chronic renal injury and fibrosis mice and assessed the percentage of necroptotic renal tubular cell death with the disruption of this necroptosis by the addition of necrostatin-1 (Nec-1). Furthermore, the observation was further confirmed in HK-2 cells treated with AngII and RIPK1/3 or MLKL inhibitors. The detection of Fas and FasL proteins led us to investigate the contribution of the Fas/FasL signaling pathway to AngII-induced necroptosis. Disruption of FasL decreased the percentage of necroptotic cells, suggesting that Fas and FasL are likely key signal molecules in the necroptosis of HK-2 cells induced by AngII. Our data suggest that AngII exposure might trigger RIPK3-MLKL-mediated necroptosis in renal tubular epithelial cells by activating the Fas/FasL signaling pathway in vivo and in vitro.
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Affiliation(s)
- Yongjun Zhu
- Department of Nephrology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
- * E-mail: (YZ); (LZ)
| | - Hongwang Cui
- Department of Orthopedics, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Jie Lv
- The First Clinical College of Hainan Medical University, Hainan, China
| | - Guojun Li
- Department of Orthopedics, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Xiaoyan Li
- Department of Nephrology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Feng Ye
- Department of Nephrology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Liangbao Zhong
- Department of Nephrology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
- * E-mail: (YZ); (LZ)
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Zhu Y, Cui H, Lv J, Liang H, Zheng Y, Wang S, Wang M, Wang H, Ye F. AT1 and AT2 receptors modulate renal tubular cell necroptosis in angiotensin II-infused renal injury mice. Sci Rep 2019; 9:19450. [PMID: 31857626 PMCID: PMC6923374 DOI: 10.1038/s41598-019-55550-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 10/24/2019] [Indexed: 01/13/2023] Open
Abstract
Abnormal renin-angiotensin system (RAS) activation plays a critical role in the initiation and progression of chronic kidney disease (CKD) by directly mediating renal tubular cell apoptosis. Our previous study showed that necroptosis may play a more important role than apoptosis in mediating renal tubular cell loss in chronic renal injury rats, but the mechanism involved remains unknown. Here, we investigate whether blocking the angiotensin II type 1 receptor (AT1R) and/or angiotensin II type 2 receptor (AT2R) beneficially alleviates renal tubular cell necroptosis and chronic kidney injury. In an angiotensin II (Ang II)-induced renal injury mouse model, we found that blocking AT1R and AT2R effectively mitigates Ang II-induced increases in necroptotic tubular epithelial cell percentages, necroptosis-related RIP3 and MLKL protein expression, serum creatinine and blood urea nitrogen levels, and tubular damage scores. Furthermore, inhibition of AT1R and AT2R diminishes Ang II-induced necroptosis in HK-2 cells and the AT2 agonist CGP42112A increases the percentage of necroptotic HK-2 cells. In addition, the current study also demonstrates that Losartan and PD123319 effectively mitigated the Ang II-induced increases in Fas and FasL signaling molecule expression. Importantly, disruption of FasL significantly suppressed Ang II-induced increases in necroptotic HK-2 cell percentages, and necroptosis-related proteins. These results suggest that Fas and FasL, as subsequent signaling molecules of AT1R and AT2R, might involve in Ang II-induced necroptosis. Taken together, our results suggest that Ang II-induced necroptosis of renal tubular cell might be involved both AT1R and AT2R and the subsequent expression of Fas, FasL signaling. Thus, AT1R and AT2R might function as critical mediators.
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Affiliation(s)
- Yongjun Zhu
- Department of Nephrology, The First Affiliated Hospital of Hainan Medical University, Hainan, China.
| | - Hongwang Cui
- Department of Orthopedics, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Jie Lv
- The First Clinical College of Hainan Medical University, Hainan, China
| | - Haiqin Liang
- Department of Nephrology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Yanping Zheng
- Department of Nephrology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Shanzhi Wang
- Department of Nephrology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Min Wang
- Department of Nephrology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Huanan Wang
- Department of Nephrology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Feng Ye
- Department of Nephrology, The First Affiliated Hospital of Hainan Medical University, Hainan, China.
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Black LM, Lever JM, Agarwal A. Renal Inflammation and Fibrosis: A Double-edged Sword. J Histochem Cytochem 2019; 67:663-681. [PMID: 31116067 PMCID: PMC6713973 DOI: 10.1369/0022155419852932] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 04/30/2019] [Indexed: 12/29/2022] Open
Abstract
Renal tissue injury initiates inflammatory and fibrotic processes that occur to promote regeneration and repair. After renal injury, damaged tissue releases cytokines and chemokines, which stimulate activation and infiltration of inflammatory cells to the kidney. Normal tissue repair processes occur simultaneously with activation of myofibroblasts, collagen deposition, and wound healing responses; however, prolonged activation of pro-inflammatory and pro-fibrotic cell types causes excess extracellular matrix deposition. This review focuses on the physiological and pathophysiological roles of specialized cell types, cytokines/chemokines, and growth factors, and their implications in recovery or exacerbation of acute kidney injury.
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Affiliation(s)
- Laurence M Black
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL
| | - Jeremie M Lever
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL
| | - Anupam Agarwal
- Nephrology Research and Training Center, Division of Nephrology, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL
- Department of Veterans Affairs, The University of Alabama at Birmingham, Birmingham, AL
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9
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Ozono Y, Shide K, Toyoshima F, Takaishi Y, Tsuchimochi M, Kamiunten A, Kameda T, Nakamura K, Miike T, Kusumoto K, Iwakiri H, Hasuike S, Nagata K, Sawaguchi A, Shimoda K. Monocyte-derived fibrocytes elimination had little contribution on liver fibrosis. Hepatobiliary Pancreat Dis Int 2019; 18:348-353. [PMID: 30826294 DOI: 10.1016/j.hbpd.2019.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 02/15/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Monocyte-derived fibrocytes play an important role in the progression of fibrosis in the skin, lungs, heart and kidney. However, the contribution of fibrocytes to liver fibrosis is unclear. The aim of this study was to investigate whether fibrocytes contributed to fibrosis progression in the livers of carbon tetrachloride (CCl4)-treated mice. METHODS C57BL/6J mice were divided into 4 groups: normal control group, CCl4-treated group, CCl4 + control liposome-treated group, and CCl4 + clodronate liposome-treated group. For the elimination of systemic monocyte and monocyte-derived fibrocyte, one group was treated with clodronate liposome, and another group with control liposome as a control. After 4 weeks of treatment, hepatic mononuclear cells were subjected to immunofluorescent (IF) staining and fluorescence-activated cell sorter (FACS) analysis to detect fibrocytes. Measurement of collagen-positive Sirius red stained area and collagen-I mRNA expression in the liver were performed to evaluate the degree of liver fibrosis quantitatively. RESULTS In the liver of the CCl4-treated and CCl4 + control liposome-treated groups, the number of fibrocytes, the area positive for Sirius red staining and collagen-I mRNA expression significantly increased compared with those in the normal control group. In the liver of the CCl4 + clodronate liposome-treated group, few fibrocytes was observed as in the normal control group, but Sirius red staining positive area and collagen-I mRNA expression were increased and equivalent to the CCl4-treated and CCl4 + control liposome-treated groups. CONCLUSION Monocyte-derived fibrocytes play a minimal role in CCl4-induced liver fibrosis. Cells other than fibrocytes such as hepatic stellate cells play a central role in liver fibrosis.
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Affiliation(s)
- Yoshinori Ozono
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Kotaro Shide
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan.
| | - Fumiyo Toyoshima
- Department of Anatomy, Ultrastructural Cell Biology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Yuuka Takaishi
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Mai Tsuchimochi
- Department of Liver disease, University of Miyazaki Hospital, Miyazaki, Japan
| | - Ayako Kamiunten
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Takuro Kameda
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Kenichi Nakamura
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Tadashi Miike
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Kazunori Kusumoto
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Hisayoshi Iwakiri
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Satoru Hasuike
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Kenji Nagata
- Department of Liver disease, University of Miyazaki Hospital, Miyazaki, Japan
| | - Akira Sawaguchi
- Department of Anatomy, Ultrastructural Cell Biology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan
| | - Kazuya Shimoda
- Department of Gastroenterology and Hematology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1601, Japan; Department of Liver disease, University of Miyazaki Hospital, Miyazaki, Japan
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10
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Bian X, Bai Y, Su X, Zhao G, Sun G, Li D. Knockdown of periostin attenuates 5/6 nephrectomy‐induced intrarenal renin–angiotensin system activation, fibrosis, and inflammation in rats. J Cell Physiol 2019; 234:22857-22873. [PMID: 31127625 DOI: 10.1002/jcp.28849] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 04/30/2019] [Accepted: 04/30/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Xiaohui Bian
- Department of Nephrology Shengjing Hospital of China Medical University Shenyang P.R. China
| | - Yu Bai
- Department of Nephrology Shengjing Hospital of China Medical University Shenyang P.R. China
| | - Xiaoxiao Su
- Department of Nephrology Shengjing Hospital of China Medical University Shenyang P.R. China
| | - Guifeng Zhao
- Research Center Shengjing Hospital of China Medical University Shenyang P.R. China
| | - Guangping Sun
- Department of Nephrology Shengjing Hospital of China Medical University Shenyang P.R. China
| | - Detian Li
- Department of Nephrology Shengjing Hospital of China Medical University Shenyang P.R. China
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11
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Pilling D, Gomer RH. The Development of Serum Amyloid P as a Possible Therapeutic. Front Immunol 2018; 9:2328. [PMID: 30459752 PMCID: PMC6232687 DOI: 10.3389/fimmu.2018.02328] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 09/19/2018] [Indexed: 02/06/2023] Open
Abstract
Pentraxins such as serum amyloid P (SAP; also known as PTX2) regulate several aspects of the innate immune system. SAP inhibits the differentiation of monocyte-derived fibroblast-like cells called fibrocytes, promotes the formation of immuno-regulatory macrophages, and inhibits neutrophil adhesion to extracellular matrix proteins. In this minireview, we describe how these effects of SAP have led to its possible use as a therapeutic, and how modulating SAP effects might be used for other therapeutics. Fibrosing diseases such as pulmonary fibrosis, cardiac fibrosis, liver fibrosis, and renal fibrosis are associated with 30-45% of deaths in the US. Fibrosis involves both fibrocyte differentiation and profibrotic macrophage differentiation, and possibly because SAP inhibits both of these processes, in 9 different animal models, SAP inhibited fibrosis. In Phase 1B and Phase 2 clinical trials, SAP injections reduced the decline in lung function in pulmonary fibrosis patients, and in a small Phase 2 trial SAP injections reduced fibrosis in myelofibrosis patients. Acute respiratory distress syndrome/ acute lung injury (ARDS/ALI) involves the accumulation of neutrophils in the lungs, and possibly because SAP inhibits neutrophil adhesion, SAP injections reduced the severity of ARDS in an animal model. Conversely, depleting SAP is a potential therapeutic for amyloidosis, topically removing SAP from wound fluid speeds wound healing in animal models, and blocking SAP binding to one of its receptors makes cultured macrophages more aggressive toward tuberculosis bacteria. These results suggest that modulating pentraxin signaling might be useful for a variety of diseases.
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Affiliation(s)
- Darrell Pilling
- Department of Biology, Texas A&M University, College Station, TX, United States
| | - Richard H Gomer
- Department of Biology, Texas A&M University, College Station, TX, United States
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12
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Mack M. Inflammation and fibrosis. Matrix Biol 2018; 68-69:106-121. [DOI: 10.1016/j.matbio.2017.11.010] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 11/24/2017] [Accepted: 11/25/2017] [Indexed: 02/07/2023]
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13
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Yu X, Xia Y, Zeng L, Zhang X, Chen L, Yan S, Zhang R, Zhao C, Zeng Z, Shu Y, Huang S, Lei J, Yuan C, Zhang L, Feng Y, Liu W, Huang B, Zhang B, Luo W, Wang X, Zhang H, Haydon RC, Luu HH, He TC, Gan H. A blockade of PI3Kγ signaling effectively mitigates angiotensin II-induced renal injury and fibrosis in a mouse model. Sci Rep 2018; 8:10988. [PMID: 30030497 PMCID: PMC6054654 DOI: 10.1038/s41598-018-29417-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/06/2018] [Indexed: 12/27/2022] Open
Abstract
Chronic kidney disease (CKD) poses a formidable challenge for public healthcare worldwide as vast majority of patients with CKD are also at risk of accelerated cardiovascular disease and death. Renal fibrosis is the common manifestation of CKD that usually leads to end-stage renal disease although the molecular events leading to chronic renal fibrosis and eventually chronic renal failure remain to be fully understood. Nonetheless, emerging evidence suggests that an aberrant activation of PI3Kγ signaling may play an important role in regulating profibrotic phenotypes. Here, we investigate whether a blockade of PI3Kγ signaling exerts any beneficial effect on alleviating kidney injury and renal fibrosis. Using a mouse model of angiotensin II (Ang II)-induced renal damage, we demonstrate that PI3Kγ inhibitor AS605240 effectively mitigates Ang II-induced increases in serum creatinine and blood urea nitrogen, renal interstitial collagen deposition, the accumulation of ECM proteins and the expression of α-Sma and fibrosis-related genes in vivo. Mechanistically, we reveal that AS605240 effectively inhibits Ang II-induced cell proliferation and phosphorylation of Akt in fibroblast cells. Furthermore, we demonstrate that Ang II-upregulated expression of IL-6, Tnf-α, IL-1β and Tgf-β1 is significantly attenuated in the mice treated with AS605240. Taken together, our results demonstrate that PI3Kγ may function as a critical mediator of Ang II-induced renal injury and fibrosis. It is thus conceivable that targeted inhibition of PI3Kγ signaling may constitute a novel therapeutic approach to the clinical management of renal fibrosis, renal hypertension and/or CKD.
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Affiliation(s)
- Xinyi Yu
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Yunfeng Xia
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Liyi Zeng
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Department of Infection Control, Zhuzhou Central Hospital, and the Affiliated Zhuzhou Hospital of Xiangya Medical College of Central South University, Zhuzhou, China
| | - Xi Zhang
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Liqun Chen
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Shujuan Yan
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, Chongqing, 400016, China
| | - Ruyi Zhang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, Chongqing, 400016, China
| | - Chen Zhao
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Zongyue Zeng
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, Chongqing, 400016, China
| | - Yi Shu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, Chongqing, 400016, China
| | - Shifeng Huang
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Jiayan Lei
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Chengfu Yuan
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Department of Biochemistry and Molecular Biology, China Three Gorges University School of Medicine, Yichang, 443002, China
| | - Linghuan Zhang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, Chongqing, 400016, China
| | - Yixiao Feng
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Wei Liu
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Bo Huang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Department of Infection Control, Zhuzhou Central Hospital, and the Affiliated Zhuzhou Hospital of Xiangya Medical College of Central South University, Zhuzhou, China
- Department of Clinical Laboratory Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang, 330031, China
| | - Bo Zhang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Key Laboratory of Orthopaedic Surgery of Gansu Province and the Department of Orthopaedic Surgery, the Second Hospital of Lanzhou University, Lanzhou, 730030, China
| | - Wenping Luo
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, and the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, 401147, China
| | - Xi Wang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Ministry of Education Key Laboratory of Diagnostic Medicine and School of Laboratory Medicine, and the Affiliated Hospitals of Chongqing Medical University, Chongqing, 400016, China
| | - Hongmei Zhang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, and the Affiliated Hospital of Stomatology of Chongqing Medical University, Chongqing, 401147, China
| | - Rex C Haydon
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Hue H Luu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
| | - Tong-Chuan He
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA.
| | - Hua Gan
- Departments of Nephrology, Orthopaedic Surgery, Cardiology, General Surgery, and Clinical Laboratory Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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Genome-wide Profiling of Urinary Extracellular Vesicle microRNAs Associated With Diabetic Nephropathy in Type 1 Diabetes. Kidney Int Rep 2017; 3:555-572. [PMID: 29854963 PMCID: PMC5976846 DOI: 10.1016/j.ekir.2017.11.019] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 11/15/2017] [Accepted: 11/27/2017] [Indexed: 01/01/2023] Open
Abstract
Introduction Diabetic nephropathy (DN) is a form of progressive kidney disease that often leads to end-stage renal disease (ESRD). It is initiated by microvascular complications due to diabetes. Although microalbuminuria (MA) is the earliest clinical indication of DN among patients with type 1 diabetes (T1D), it lacks the sensitivity and specificity to detect the early onset of DN. Recently, microRNAs (miRNAs) have emerged as critical regulators in diabetes as well as various forms of kidney disease, including renal fibrosis, acute kidney injury, and progressive kidney disease. Additionally, circulating extracellular miRNAs, especially miRNAs packaged in extracellular vesicles (EVs), have garnered significant attention as potential noninvasive biomarkers for various diseases and health conditions. Methods As part of the University of Pittsburgh Epidemiology of Diabetes Complications (EDC) study, urine was collected from individuals with T1D with various grades of DN or MA (normal, overt, intermittent, and persistent) over a decade at prespecified intervals. We isolated EVs from urine and analyzed the small-RNA using NextGen sequencing. Results We identified a set of miRNAs that are enriched in urinary EVs compared with EV-depleted samples, and identified a number of miRNAs showing concentration changes associated with DN occurrence, MA status, and other variables, such as hemoglobin A1c levels. Conclusion Many of the miRNAs associated with DN occurrence or MA status directly target pathways associated with renal fibrosis (including transforming growth factor-β and phosphatase and tensin homolog), which is one of the major contributors to the pathology of DN. These miRNAs are potential biomarkers for DN and MA.
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Amara VR, Surapaneni SK, Tikoo K. Dysregulation of microRNAs and renin-angiotensin system in high salt diet-induced cardiac dysfunction in uninephrectomized rats. PLoS One 2017; 12:e0180490. [PMID: 28727756 PMCID: PMC5519030 DOI: 10.1371/journal.pone.0180490] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Accepted: 06/15/2017] [Indexed: 12/22/2022] Open
Abstract
Uninephrectomy is not associated with major adverse events in cardiovascular and renal functions of live kidney donors. The effect of high salt diet on the quality of life of live kidney donors is largely unknown. Hence in this study, we aimed to determine the effect of high salt diet on the alterations of renin-angiotensin system and microRNAs leading to CV and renal dysfunction in uninephrectomized rats. In order to mimic clinical scenario, uninephrectomized male Sprague Dawley rats were fed initially with normal pellet diet for 12 weeks and then for 20 weeks with high salt (10% w/w NaCl) diet. At the end of the study, biochemical, functional, histological and molecular parameters were measured. High salt diet feeding resulted in renal dysfunction & fibrosis, decreased baroreflex sensitivity, increased in vivo cardiovascular reactivity to angiotensin II owing to upregulation of angiotensin II type 1 receptors and L-type calcium channels leading to cardiovascular dysfunction in uninephrectomized rats (UNX+HSD) worse than that of normal (binephric) rats fed with high salt diet (HSD). Protein expression of functional and hypertrophic protein markers revealed decreased SERCA, p-AMPK and increased p-AKT. Interestingly, levels of miR-25, miR-451 and miR-155 increased and miR-99 decreased in heart of uninephrectomized rats fed with high salt. However, circulating miR-25 and miR-451 levels decreased and miR-99b increased in these animals. Our study points out that since tissue and circulating levels of miRNAs are not similar, caution must be exercised during the usage of miRs as diagnostic or prognostic biomarkers. To our knowledge, we are the first to show that epigenetic alterations result in cardiac dysfunction in uninephrectomized rats fed with high salt diet.
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Affiliation(s)
- Venkateswara Rao Amara
- Laboratory of Epigenetics and Diseases, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Punjab, India
| | - Sunil Kumar Surapaneni
- Laboratory of Epigenetics and Diseases, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Punjab, India
| | - Kulbhushan Tikoo
- Laboratory of Epigenetics and Diseases, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Punjab, India
- * E-mail:
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16
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Yoshinaga T, Uwabe K, Naito S, Higashino K, Nakano T, Numata Y, Kihara A. AM251 Suppresses Epithelial-Mesenchymal Transition of Renal Tubular Epithelial Cells. PLoS One 2016; 11:e0167848. [PMID: 27936102 PMCID: PMC5148003 DOI: 10.1371/journal.pone.0167848] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 11/21/2016] [Indexed: 01/14/2023] Open
Abstract
Epithelial-mesenchymal transition (EMT) of renal tubular epithelial cells is one of the causative mechanisms of kidney fibrosis. In our study, we screened lipophilic compounds using a lipid library including approximately 200 lipids to identify those that suppressed EMT induced by a transforming growth factor (TGF)-β1 stimulus. Initial screening was performed with the immortalized HK-2 renal tubule epithelial cell line. The most promising compounds were further tested in RPTEC primary renal tubule epithelial cells. We found that the synthetic lipid AM251 suppressed two hallmark events associated with EMT, the upregulation of collagen 1A1 (COL1A1) and downregulation of E-cadherin. Though AM251 is known to act as an antagonist for the cannabinoid receptor type 1 (CB1) and an agonist for the G protein-coupled receptor 55 (GRP55), the suppression of EMT by AM251 was not mediated through either receptor. Microarray analyses revealed that AM251 inhibited induction of several EMT transcription factors such as SNAIL1, which is the key inducer of EMT, and the AP-1 transcription factors FOSB and JUNB. Activation of SMAD2/3 and p38 mitogen-activated protein kinase (MAPK) was inhibited by AM251, with greater inhibition of the latter, indicating that AM251 acted upstream of SMAD/p38 MAPK in the TGF-β signaling pathway. Our findings regarding the effects of AM251 on the TGF-β signaling pathway may inform development of a novel therapeutic agent suppressing EMT, thus preventing kidney fibrosis.
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Affiliation(s)
- Tomoyo Yoshinaga
- Laboratory of Biochemistry, Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- Biomarker R&D Department, Shionogi & Co., Ltd., Toyonaka, Japan
| | - Kenichiro Uwabe
- Global Innovation Office, Pharmaceutical Research Division, Shionogi & Co., Ltd., Toyonaka, Japan
| | - Shoichi Naito
- Biomarker R&D Department, Shionogi & Co., Ltd., Toyonaka, Japan
| | | | - Toru Nakano
- Corporate GxP Compliance Office, Shionogi & Co., Ltd., Toyonaka, Japan
| | - Yoshito Numata
- Drug Discovery Disease Laboratory, Shionogi & Co., Ltd., Sapporo, Japan
| | - Akio Kihara
- Laboratory of Biochemistry, Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
- * E-mail:
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17
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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. THE JOURNAL OF IMMUNOLOGY 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] [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
Wounds are among the most common, painful, debilitating and costly conditions in older adults. Disruption of the angiotensin type 1 receptors (AT1R), has been associated with impaired wound healing, suggesting a critical role for AT1R in this repair process. Biological functions of angiotensin type 2 receptors (AT2R) are less studied. We investigated effects of genetically disrupting AT2R on rate and quality of wound healing. Our results suggest that AT2R effects on rate of wound closure depends on the phase of wound healing. We observed delayed healing during early phase of wound healing (inflammation). An accelerated healing rate was seen during later stages (proliferation and remodeling). By day 12, fifty percent of AT2R−/− mice had complete wound closure as compared to none in either C57/BL6 or AT1R−/− mice. There was a significant increase in AT1R, TGFβ1 and TGFβ2 expression during the proliferative and remodeling phases in AT2R−/− mice. Despite the accelerated closure rate, AT2R−/− mice had more fragile healed skin. Our results suggest that in the absence of AT2R, wound healing rate is accelerated, but yielded worse skin quality. Elucidating the contribution of both of the angiotensin receptors may help fine tune future intervention aimed at wound repair in older individuals.
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Sosa Peña MDP, Lopez-Soler R, Melendez JA. Senescence in chronic allograft nephropathy. Am J Physiol Renal Physiol 2016; 315:F880-F889. [PMID: 27306980 DOI: 10.1152/ajprenal.00195.2016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Despite increasing numbers of patients on dialysis, the numbers of renal transplants performed yearly have remained relatively static. During the last 50 years, there have been many advances in the pharmacology of prevention of organ rejection. However, most patients will suffer from a slow but steady decline in renal function leading to graft loss. The most common cause of long-term graft loss is chronic allograft nephropathy (CAN). Therefore, elucidating and understanding the mechanisms involved in CAN is crucial for achieving better posttransplant outcomes. It is thought that the development of epithelial to mesenchymal transition (EMT) in proximal tubules is one of the first steps towards CAN, and has been shown to be a result of cellular senescence. Cells undergoing senescence acquire a senescence associated secretory phenotype (SASP) leading to the production of interleukin-1 alpha (IL-1α), which has been implicated in several degenerative and inflammatory processes including renal disease. A central mediator in SASP activation is the production of reactive oxygen species (ROS), which are produced in response to numerous physiological and pathological stimuli. This review explores the connection between SASP and the development of EMT/CAN in an effort to suggest future directions for research leading to improved long-term graft outcomes.
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Affiliation(s)
| | - Reynold Lopez-Soler
- Albany Medical Center, Department of Surgery, Division of Transplantation, Albany, New York
| | - J Andrés Melendez
- SUNY Polytechnic Institute, Colleges of Nanoscale Science and Engineering, Albany, New York
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Tan RJ, Zhou D, Liu Y. Signaling Crosstalk between Tubular Epithelial Cells and Interstitial Fibroblasts after Kidney Injury. KIDNEY DISEASES 2016; 2:136-144. [PMID: 27921041 DOI: 10.1159/000446336] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 04/20/2016] [Indexed: 01/09/2023]
Abstract
BACKGROUND A wide variety of kidney diseases ultimately lead to tubulointerstitial damage. The initial site of injury is usually the renal tubules, with activation of fibroblasts occurring later. Self-limited disease is characterized by transient cellular activation with timed deactivation and ultimately a return to normal functioning, whereas sustained responses characterize chronic disease and the development of irreversible fibrosis. The underlying molecular and cellular mechanisms of this cascade of events remain an area of active research. Current data overwhelmingly support a role for crosstalk between the tubular epithelium and the interstitial fibroblast that mediates both repair/regeneration and progressive disease. This epithelial-mesenchymal communication (EMC) is regulated by a variety of soluble ligands binding to cell surface receptors to induce intracellular signaling events. SUMMARY EMC is an important mechanism whereby tubular epithelium and fibroblasts/mesenchymal cells crosstalk to affect renal physiology and pathology. Numerous soluble factors such as sonic hedgehog, Wnt ligands, transforming growth factor-β, hepatocyte growth factor, connective tissue growth factor, and angiotensin II all participate in bidirectional EMC. Recent studies have also identified exosomes as a vehicle to mediate EMC during kidney injury. In general, while the short-term activity of EMC factors is renoprotective, prolonged activation of these factors leads to chronic disease and fibrosis. KEY MESSAGES The discovery of a complex and intricate system of communication between tubular cells and fibroblasts is a new paradigm in our understanding of renal fibrosis. An appreciation of both their regenerative and pathologic functions will inform the development and use of targeted therapeutic interventions.
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Affiliation(s)
- Roderick J Tan
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pa., USA
| | - Dong Zhou
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pa., USA
| | - Youhua Liu
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pa., USA; State Key Laboratory of Organ Failure Research, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Michel MC, Brunner HR, Foster C, Huo Y. Angiotensin II type 1 receptor antagonists in animal models of vascular, cardiac, metabolic and renal disease. Pharmacol Ther 2016; 164:1-81. [PMID: 27130806 DOI: 10.1016/j.pharmthera.2016.03.019] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 03/30/2016] [Indexed: 02/07/2023]
Abstract
We have reviewed the effects of angiotensin II type 1 receptor antagonists (ARBs) in various animal models of hypertension, atherosclerosis, cardiac function, hypertrophy and fibrosis, glucose and lipid metabolism, and renal function and morphology. Those of azilsartan and telmisartan have been included comprehensively whereas those of other ARBs have been included systematically but without intention of completeness. ARBs as a class lower blood pressure in established hypertension and prevent hypertension development in all applicable animal models except those with a markedly suppressed renin-angiotensin system; blood pressure lowering even persists for a considerable time after discontinuation of treatment. This translates into a reduced mortality, particularly in models exhibiting marked hypertension. The retrieved data on vascular, cardiac and renal function and morphology as well as on glucose and lipid metabolism are discussed to address three main questions: 1. Can ARB effects on blood vessels, heart, kidney and metabolic function be explained by blood pressure lowering alone or are they additionally directly related to blockade of the renin-angiotensin system? 2. Are they shared by other inhibitors of the renin-angiotensin system, e.g. angiotensin converting enzyme inhibitors? 3. Are some effects specific for one or more compounds within the ARB class? Taken together these data profile ARBs as a drug class with unique properties that have beneficial effects far beyond those on blood pressure reduction and, in some cases distinct from those of angiotensin converting enzyme inhibitors. The clinical relevance of angiotensin receptor-independent effects of some ARBs remains to be determined.
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Affiliation(s)
- Martin C Michel
- Dept. Pharmacology, Johannes Gutenberg University, Mainz, Germany; Dept. Translational Medicine & Clinical Pharmacology, Boehringer Ingelheim, Ingelheim, Germany.
| | | | - Carolyn Foster
- Retiree from Dept. of Research Networking, Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, CT, USA
| | - Yong Huo
- Dept. Cardiology & Heart Center, Peking University First Hospital, Beijing, PR China
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22
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Yan J, Zhang Z, Jia L, Wang Y. Role of Bone Marrow-Derived Fibroblasts in Renal Fibrosis. Front Physiol 2016; 7:61. [PMID: 26941655 PMCID: PMC4766307 DOI: 10.3389/fphys.2016.00061] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 02/09/2016] [Indexed: 01/13/2023] Open
Abstract
Renal fibrosis represents a common pathway leading to progression of chronic kidney disease. Renal interstitial fibrosis is characterized by extensive fibroblast activation and excessive production and deposition of extracellular matrix (ECM), which leads to progressive loss of kidney function. There is no effective therapy available clinically to halt or even reverse renal fibrosis. Although activated fibroblasts/myofibroblasts are responsible for the excessive production and deposition of ECM, their origin remains controversial. Recent evidence suggests that bone marrow-derived fibroblast precursors contribute significantly to the pathogenesis of renal fibrosis. Understanding the molecular signaling mechanisms underlying the recruitment and activation of the bone marrow-derived fibroblast precursors will lead to novel therapy for the treatment of chronic kidney disease. In this review, we summarize recent advances in our understanding of the recruitment and activation of bone marrow-derived fibroblast precursors in the kidney and the development of renal fibrosis and highlights new insights that may lead to novel therapies to prevent or reverse the development of renal fibrosis.
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Affiliation(s)
- Jingyin Yan
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine Houston, TX, USA
| | - Zhengmao Zhang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine Houston, TX, USA
| | - Li Jia
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine Houston, TX, USA
| | - Yanlin Wang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of MedicineHouston, TX, USA; Renal Section, Michael E. DeBakey Veterans Affairs Medical CenterHouston, TX, USA
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23
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Zhang R, Pan Y, Fanelli V, Wu S, Luo AA, Islam D, Han B, Mao P, Ghazarian M, Zeng W, Spieth PM, Wang D, Khang J, Mo H, Liu X, Uhlig S, Liu M, Laffey J, Slutsky AS, Li Y, Zhang H. Mechanical Stress and the Induction of Lung Fibrosis via the Midkine Signaling Pathway. Am J Respir Crit Care Med 2015; 192:315-23. [PMID: 25945397 DOI: 10.1164/rccm.201412-2326oc] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
RATIONALE Lung-protective ventilatory strategies have been widely used in patients with acute respiratory distress syndrome (ARDS), but the ARDS mortality rate remains unacceptably high and there is no proven pharmacologic therapy. OBJECTIVES Mechanical ventilation can induce oxidative stress and lung fibrosis, which may contribute to high dependency on ventilator support and increased ARDS mortality. We hypothesized that the novel cytokine, midkine (MK), which can be up-regulated in oxidative stress, plays a key role in the pathogenesis of ARDS-associated lung fibrosis. METHODS Blood samples were collected from 17 patients with ARDS and 10 healthy donors. Human lung epithelial cells were challenged with hydrogen chloride followed by mechanical stretch for 72 hours. Wild-type and MK gene-deficient (MK(-/-)) mice received two-hit injury of acid aspiration and mechanical ventilation, and were monitored for 14 days. MEASUREMENTS AND MAIN RESULTS Plasma concentrations of MK were higher in patients with ARDS than in healthy volunteers. Exposure to mechanical stretch of lung epithelial cells led to an epithelial-mesenchymal transition profile associated with increased expression of angiotensin-converting enzyme, which was attenuated by silencing MK, its receptor Notch2, or NADP reduced oxidase 1. An increase in collagen deposition and hydroxyproline level and a decrease in lung tissue compliance seen in wild-type mice were largely attenuated in MK(-/-) mice. CONCLUSIONS Mechanical stretch can induce an epithelial-mesenchymal transition phenotype mediated by the MK-Notch2-angiotensin-converting enzyme signaling pathway, contributing to lung remodeling. The MK pathway is a potential therapeutic target in the context of ARDS-associated lung fibrosis.
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Affiliation(s)
- Rong Zhang
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ying Pan
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Vito Fanelli
- 2 Department of Anesthesia and Critical Care, University of Turin, AOU Città della Salute e della Scienza di Torino-Ospedale Molinette, Turin, Italy.,3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Sulong Wu
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Alice Aili Luo
- 3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Diana Islam
- 3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Bing Han
- 3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Pu Mao
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Mirna Ghazarian
- 3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Wenmei Zeng
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Peter M Spieth
- 3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada.,4 Department of Anesthesiology and Intensive Care Medicine, Technische Universität, Dresden, Germany
| | - Dingyan Wang
- 3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Julie Khang
- 3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Hongyin Mo
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaoqing Liu
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Stefan Uhlig
- 5 Faculty of Medicine, RWTH Aachen University, Aachen, Germany; and
| | | | - John Laffey
- 3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada.,6 Department of Physiology.,7 Department of Anesthesia, and.,8 Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Arthur S Slutsky
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada.,8 Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Yimin Li
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Haibo Zhang
- 1 The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,3 The Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada.,6 Department of Physiology.,7 Department of Anesthesia, and.,8 Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
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Sakai N, Wada T. T Helper 2 Cytokine Signaling in Bone Marrow-Derived Fibroblasts: A Target for Renal Fibrosis. J Am Soc Nephrol 2015; 26:2896-8. [PMID: 26032812 DOI: 10.1681/asn.2015040469] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Affiliation(s)
- Norihiko Sakai
- Divisions of Blood Purification and Nephrology, Kanazawa University Hospital, Kanazawa, Japan; and
| | - Takashi Wada
- Nephrology, Kanazawa University Hospital, Kanazawa, Japan; and Department of Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Faculty of Medicine, Kanazawa University, Kanazawa, Japan
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Xu J, Kisseleva T. Bone marrow-derived fibrocytes contribute to liver fibrosis. Exp Biol Med (Maywood) 2015; 240:691-700. [PMID: 25966982 DOI: 10.1177/1535370215584933] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 03/09/2015] [Indexed: 12/30/2022] Open
Abstract
Chronic liver injury often leads to hepatic fibrosis, a condition associated with increased levels of circulating TGF-β1 and lipopolysaccharide, activation of myofibroblasts, and extensive deposition of extracellular matrix, mostly collagen Type I. Hepatic stellate cells are considered to be the major(1) but not the only source of myofibroblasts in the injured liver.(2) Hepatic myofibroblasts may also originate from portal fibroblasts, mesenchymal cells, and fibrocytes.(3) Since the discovery of fibrocytes in 1994 by Dr. Bucala and colleagues, this bone marrow (BM)-derived collagen Type I-producing CD45(+) cells remain the most fascinating cells of the hematopoietic system. Due to the ability to differentiate into collagen Type I producing cells/myofibroblasts, fibrocytes were implicated in the pathogenesis of liver, skin, lung, and kidney fibrosis. However, studies of different organs often contain controversial results on the number of fibrocytes recruited to the site of injury and their biological function. Furthermore, fibrocytes were implicated in the pathogenesis of sepsis and were shown to possess antimicrobial activity. Finally, in response to specific stimuli, fibrocytes can give rise to fully differentiated macrophages, suggesting that in concurrence with the high plasticity of hematopoietic cells, fibrocytes exhibit progenitor properties. Here, we summarize our current understanding of the role of CD45(+)Collagen Type I(+) BM-derived cells in response to fibrogenic liver injury and septicemia and 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
- Department of Medicine, University of California, San Diego, CA 92093, USA
| | - Tatiana Kisseleva
- Department of Surgery, University of California, San Diego, CA 92093, USA
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Pilling D, Cox N, Vakil V, Verbeek JS, Gomer RH. The long pentraxin PTX3 promotes fibrocyte differentiation. PLoS One 2015; 10:e0119709. [PMID: 25774777 PMCID: PMC4361553 DOI: 10.1371/journal.pone.0119709] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 01/16/2015] [Indexed: 12/31/2022] Open
Abstract
Monocyte-derived, fibroblast-like cells called fibrocytes are associated with fibrotic lesions. The plasma protein serum amyloid P component (SAP; also known as pentraxin-2, PTX2) inhibits fibrocyte differentiation in vitro, and injections of SAP inhibit fibrosis in vivo. SAP is a member of the pentraxin family of proteins that includes C-reactive protein (CRP; PTX1) and pentraxin-3 (PTX3). All three pentraxins are associated with fibrosis, but only SAP and CRP have been studied for their effects on fibrocyte differentiation. We find that compared to SAP and CRP, PTX3 promotes human and murine fibrocyte differentiation. The effect of PTX3 is dependent on FcγRI. In competition studies, the fibrocyte-inhibitory activity of SAP is dominant over PTX3. Binding competition studies indicate that SAP and PTX3 bind human FcγRI at different sites. In murine models of lung fibrosis, PTX3 is present in fibrotic areas, and the PTX3 distribution is associated with collagen deposition. In lung tissue from pulmonary fibrosis patients, PTX3 has a widespread distribution, both in unaffected tissue and in fibrotic lesions, whereas SAP is restricted to areas adjacent to vessels, and absent from fibrotic areas. These data suggest that the relative levels of SAP and PTX3 present at sites of fibrosis may have a significant effect on the ability of monocytes to differentiate into fibrocytes.
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Affiliation(s)
- Darrell Pilling
- Department of Biology, Texas A&M University, College Station, Texas, United States of America
- * E-mail: (DP); (RHG)
| | - Nehemiah Cox
- Department of Biology, Texas A&M University, College Station, Texas, United States of America
| | - Varsha Vakil
- Department of Biochemistry and Cell Biology, Rice University, Houston, Texas, United States of America
| | - J. Sjef Verbeek
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Richard H. Gomer
- Department of Biology, Texas A&M University, College Station, Texas, United States of America
- Department of Biochemistry and Cell Biology, Rice University, Houston, Texas, United States of America
- * E-mail: (DP); (RHG)
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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] [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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Origin of myofibroblasts and cellular events triggering fibrosis. Kidney Int 2014; 87:297-307. [PMID: 25162398 DOI: 10.1038/ki.2014.287] [Citation(s) in RCA: 255] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 04/04/2014] [Accepted: 04/10/2014] [Indexed: 01/13/2023]
Abstract
Renal fibrosis is a major hallmark of chronic kidney disease that is considered to be a common end point of various types of renal disease. To date, the biological meaning of fibrosis during the progression of chronic kidney diseases is unknown and possibly depends on the cell type contributing to extracellular matrix production. During the past decade, the origin of myofibroblasts in the kidney has been intensively investigated. Determining the origins of renal myofibroblasts is important because these might account for the heterogeneous characteristics and behaviors of myofibroblasts. Current data strongly suggest that collagen-producing myofibroblasts in the kidney can be derived from various cellular sources. Resident renal fibroblasts and cells of hematopoietic origin migrating into the kidney seem to be the most important ancestors of myofibroblasts. It is likely that both cell types communicate with each other and also with other cell types in the kidney. In this review, we will discuss the current knowledge on the origin of scar-producing myofibroblasts and cellular events triggering fibrosis.
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Increased CD40+ Fibrocytes in Patients With Idiopathic Orbital Inflammation. Ophthalmic Plast Reconstr Surg 2014; 31:202-6. [PMID: 25098443 DOI: 10.1097/iop.0000000000000243] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE To investigate the phenotypic and functional characteristics of peripheral and tissue-infiltrating stem cells called fibrocytes in patients with idiopathic orbital inflammation (IOI). METHODS Seven patients with IOI were studied. In the 3 patients requiring orbital biopsy, fibrocytes were identified in orbital tissue from patients with IOI compared with healthy controls using immunohistochemistry. Fibrocytes from the peripheral blood of all 7 patients and controls were quantified and phenotyped by flow cytometry and immunofluorescence for expression of CD34, alpha smooth muscle actin, CD40, and collagen 1. Quantitation of CD40-mediated interleukin-6 (IL-6) production was measured using enzyme-linked immunosorbent assay. RESULTS Orbital biopsy specimens from patients with IOI demonstrate tissue infiltration by fibrocytes (n = 3). Fibrocytes are present in the peripheral blood of IOI patients (n = 7) but are scarce in healthy donors (n = 19). Fibrocytes from IOI patients express substantial levels of CD40, and ligation of CD40 increases IL-6 expression. CONCLUSIONS Fibrocytes are present in the peripheral blood and orbital tissues of patients with IOI and constitutively express CD40 and express IL-6 in response to ligation. This site-specific predilection of CD34(+) fibrocytes to sites of orbital inflammation and fibrosis may suggest a role in IOI. Moreover, CD40-mediated activation cytokine production may contribute to the proinflammatory and profibrotic features of IOI and may provide a mechanism for future targeted therapy.
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31
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Chen J, Zhao S, Liu Y, Cen Y, Nicolas C. Effect of captopril on collagen metabolisms in keloid fibroblast cells. ANZ J Surg 2014; 86:1046-1051. [PMID: 24852495 DOI: 10.1111/ans.12670] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2014] [Indexed: 02/05/2023]
Abstract
BACKGROUND Keloid is a proliferative disease of fibrous tissues. The mechanism and consistently effective treatments of keloid remained unknown. Although there was a report about treating keloid with topical captopril, the further investigation about captopril affecting keloid has not been performed so far. OBJECTIVES The aim of this study was to analyse the effect of captopril on collagen metabolisms in keloid fibroblast cells, and to provide information for the mechanism and therapy of keloid. METHODS To investigate the effects and relative mechanism of captopril on keloid fibroblast cells, we examined the changes of collagen metabolism, expression of angiotensin, transforming growth factor (TGF)-β1, platelet-derived growth factor (PDGF)-BB and heat shock protein 47 (HSP47), and cellular proliferation in keloid fibroblast cells. RESULTS We found that all collagen metabolisms, expression of TGF-β1, PDGF-BB and HSP47, and cellular proliferation decreased significantly with effective captopril concentrations in keloid fibroblast cells. CONCLUSIONS With a comprehensive analysis of test results, we proposed that captopril may decrease the expression of angiotensin, PDGF-BB, TGF-β1 and HSP47, and further inhibit proliferation and collagen synthesis of keloid fibroblast cells, which were the key in keloid formation.
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Affiliation(s)
- Junjie Chen
- Department of Burns and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Sha Zhao
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yong Liu
- Department of Burns and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ying Cen
- Department of Burns and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Crook Nicolas
- Department of Burns and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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Wang Y, Smith TJ. Current concepts in the molecular pathogenesis of thyroid-associated ophthalmopathy. Invest Ophthalmol Vis Sci 2014; 55:1735-48. [PMID: 24651704 DOI: 10.1167/iovs.14-14002] [Citation(s) in RCA: 155] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Graves' disease (GD) is a common autoimmune condition. At its core, stimulatory autoantibodies are directed at the thyroid-stimulating hormone receptor (TSHR), resulting in dysregulated thyroid gland activity and growth. Closely associated with GD is the ocular condition known as thyroid-associated ophthalmopathy (TAO). The pathogenesis of TAO remains enigmatic as do the connections between the thyroid and orbit. This review highlights the putative molecular mechanisms involved in TAO and suggests how these insights provide future directions for identifying therapeutic targets. Genetic, epigenetic, and environmental factors have been suggested as contributory to the development of GD and TAO. Thyroid-stimulating hormone receptor and insulin-like growth factor receptor (IGF-1R) are expressed at higher levels in the orbital connective tissue from individuals with TAO than in healthy tissues. Together, they form a functional complex and appear to promote signaling relevant to GD and TAO. Orbital fibroblasts display an array of cell surface receptors and generate a host of inflammatory molecules that may participate in T and B cell infiltration. Recently, a population of orbital fibroblasts has been putatively traced to bone marrow-derived progenitor cells, known as fibrocytes, as they express CD45, CD34, CXCR4, collagen I, functional TSHR, and thyroglobulin (Tg). Fibrocytes become more numerous in GD and we believe traffic to the orbit in TAO. Numerous attempts at developing complete animal models of GD have been largely unsuccessful, because they lack fidelity with the ocular manifestations seen in TAO. Better understanding of the pathogenesis of TAO and development of improved animal models should greatly accelerate the identification of medical therapy for this vexing medical problem.
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Affiliation(s)
- Yao Wang
- Department of Ophthalmology and Visual Sciences and Division of Metabolic and Endocrine Disease, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan
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Hao J, Ren L, Zhang L, Kong D, Hao L. Aldosterone-induced inflammatory response of mesangial cells via angiotension II receptors. J Renin Angiotensin Aldosterone Syst 2014; 16:739-48. [PMID: 24464860 DOI: 10.1177/1470320313519486] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Jianbing Hao
- Department of Nephropathy and Hemodialysis, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Liansheng Ren
- Department of Nephropathy and Hemodialysis, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Lei Zhang
- Department of Nephropathy and Hemodialysis, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Deyang Kong
- Department of Nephropathy and Hemodialysis, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Lirong Hao
- Department of Nephropathy and Hemodialysis, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Sahebally SM, Burke JP, Chang KH, Kiernan MG, O'Connell PR, Coffey JC. Circulating fibrocytes and Crohn's disease. Br J Surg 2013; 100:1549-56. [DOI: 10.1002/bjs.9302] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2013] [Indexed: 12/19/2022]
Abstract
Abstract
Background
Despite advances in medical therapy, there remains no effective preventive or non-surgical therapeutic option for fibrostenotic Crohn's disease (CD). Symptomatic recurrences are common, necessitating reintervention. Intestinal fibroblasts mediate stricture formation, but their exact source is unclear. Recent evidence indicates that circulating fibrocytes drive fibrosis through differentiation into fibroblasts and the production of extracellular matrix proteins. The aim of this review is to describe current understanding of the pathophysiology underlying fibrosis in CD, the cellular and molecular biology of fibrocytes and their role in CD.
Methods
The electronic literature (January 1972 to December 2012) on ‘circulating fibrocytes’ and ‘Crohn's fibrosis’ was reviewed.
Results
Circulating fibrocytes appear universally involved in organ fibrosis. A complex array of cytokines, chemokines and growth factors regulate fibrocyte biology, and these are associated with fibrogenesis in CD. The cytokines transforming growth factor β1, connective tissue growth factor and interleukin 13, overexpressed in the strictured Crohn's intestine, promote fibrocyte generation and/or differentiation.
Conclusion
Levels of circulating fibrocytes are raised in conditions marked by exaggerated fibrosis. These and other observations prompt a characterization of fibrocyte activity in CD with a view to investigating a pathogenic role.
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Affiliation(s)
- S M Sahebally
- Department of Colorectal Surgery, University Hospital Limerick, Limerick, Ireland
- 4i Centre for Interventions In Inflammation, Infection and Immunity, Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - J P Burke
- Department of Colorectal Surgery, University Hospital Limerick, Limerick, Ireland
| | - K H Chang
- Department of Colorectal Surgery, University Hospital Limerick, Limerick, Ireland
| | - M G Kiernan
- 4i Centre for Interventions In Inflammation, Infection and Immunity, Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - P R O'Connell
- Centre for Colorectal Disease, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine and Medical Science, University College Dublin, Dublin, Ireland
| | - J C Coffey
- Department of Colorectal Surgery, University Hospital Limerick, Limerick, Ireland
- 4i Centre for Interventions In Inflammation, Infection and Immunity, Graduate Entry Medical School, University of Limerick, Limerick, Ireland
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 03/11/2013] [Indexed: 12/19/2022]
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van Deventer HW, Palmieri DA, Wu QP, McCook EC, Serody JS. Circulating fibrocytes prepare the lung for cancer metastasis by recruiting Ly-6C+ monocytes via CCL2. THE JOURNAL OF IMMUNOLOGY 2013; 190:4861-7. [PMID: 23536638 DOI: 10.4049/jimmunol.1202857] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Fibrocytes are circulating, hematopoietic cells that express CD45 and Col1a1. They contribute to wound healing and several fibrosing disorders by mechanisms that are poorly understood. In this report, we demonstrate that fibrocytes predispose the lung to B16-F10 metastasis by recruiting Ly-6C(+) monocytes. To do so, we isolated fibrocytes expressing CD45, CD11b, CD13, and Col1a1 from the lungs of wild type (WT) and Ccr5(-/-) mice. WT but not Ccr5(-/-) fibrocytes increased the number of metastatic foci when injected into Ccr5(-/-) mice (73 ± 2 versus 32 ± 5; p < 0.001). This process was MMP9 dependent. Injection of WT enhanced GFP(+) fibrocytes also increased the number of Gr-1(Int), CD11b(+), and enhanced GFP(-) monocytes. Like premetastatic-niche monocytes, these recruited cells expressed Ly-6C, CD117, and CD45. The transfer of these cells into Ccr5(-/-) mice enhanced metastasis (90 ± 8 foci) compared with B cells (27 ± 2), immature dendritic cells (31 ± 6), or alveolar macrophages (28 ± 3; p < 0.05). WT and Ccl2(-/-) fibrocytes also stimulated Ccl2 expression in the lung by 2.07 ± 0.05- and 2.78 ± 0.36-fold compared with Ccr5(-/-) fibrocytes (1.0 ± 0.06; p < 0.05). Furthermore, WT fibrocytes did not increase Ly-6C(+) monocytes in Ccr2(-/-) mice and did not promote metastasis in either Ccr2(-/-) or Ccl2(-/-) mice. These data support our hypothesis that fibrocytes contribute to premetastatic conditioning by recruiting Ly-6C(+) monocytes in a chemokine-dependent process. This work links metastatic risk to conditions that mobilize fibrocytes, such as inflammation and wound repair.
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Affiliation(s)
- Hendrik W van Deventer
- Department of Medicine, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA.
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Fibrocytes develop outside the kidney but contribute to renal fibrosis in a mouse model. Kidney Int 2013; 84:78-89. [PMID: 23486523 DOI: 10.1038/ki.2013.84] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Revised: 01/07/2013] [Accepted: 01/10/2013] [Indexed: 12/24/2022]
Abstract
Collagen-producing bone marrow-derived cells (fibrocytes) have been detected in animal models and patients with fibrotic diseases. In vitro data suggest that they develop from monocytes with the help of accessory cells and profibrotic soluble factors. Using a mouse model of renal fibrosis, unilateral ureteral obstruction, we found the number of circulating fibrocytes was not reduced when monocytes were depleted with a monoclonal antibody against CCR2 or when CCR2-/- mice with very low numbers of circulating or splenic monocytes were analyzed. The absence of CCR2, however, interfered with migration of fibrocytes into the kidney. The phenotype of splenic and renal fibrocytes was very similar and distinct from classical monocytes as fibrocytes expressed no CD115, medium levels of CCR2, and high levels of CD11b and Ly-6G. Using a depleting monoclonal antibody against Ly-6G or bone marrow chimeric mice expressing the diphtheria toxin receptor under the control of CD11b, we could efficiently deplete fibrocytes from the kidney. Depletion of fibrocytes or reduced migration of fibrocytes into the kidney resulted in lower renal expression of collagen-I. Thus, fibrocytes develop outside the kidney independent of infiltrating monocytes and rely on CCR2 for migration into target organs.
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Sagara =A, Furuichi =K, Sakai =N, Hara =A, Iwata =Y, Matsushima =K, Kaneko =S, Wada =T. Contribution of inflammation-associated bone-marrow-derived cells to kidney fibrosis. Inflamm Regen 2013. [DOI: 10.2492/inflammregen.33.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Kanasaki K, Taduri G, Koya D. Diabetic nephropathy: the role of inflammation in fibroblast activation and kidney fibrosis. Front Endocrinol (Lausanne) 2013; 4:7. [PMID: 23390421 PMCID: PMC3565176 DOI: 10.3389/fendo.2013.00007] [Citation(s) in RCA: 159] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 01/16/2013] [Indexed: 12/13/2022] Open
Abstract
Kidney disease associated with diabetes mellitus is a major health problem worldwide. Although established therapeutic strategies, such as appropriate blood glucose control, blood pressure control with renin-angiotensin system blockade, and lipid lowering with statins, are used to treat diabetes, the contribution of diabetic end-stage kidney disease to the total number of cases requiring hemodialysis has increased tremendously in the past two decades. Once renal function starts declining, it can result in a higher frequency of renal and extra-renal events, including cardiovascular events. Therefore, slowing renal function decline is one of the main areas of focus in diabetic nephropathy research, and novel strategies are urgently needed to prevent diabetic kidney disease progression. Regardless of the type of injury and etiology, kidney fibrosis is the commonly the final outcome of progressive kidney diseases, and it results in significant destruction of normal kidney structure and accompanying functional deterioration. Kidney fibrosis is caused by prolonged injury and dysregulation of the normal wound-healing process in association with excess extracellular matrix deposition. Kidney fibroblasts play an important role in the fibrotic process, but the origin of the fibroblasts remains elusive. In addition to the activation of residential fibroblasts, other important sources of fibroblasts have been proposed, such as pericytes, fibrocytes, and fibroblasts originating from epithelial-to-mesenchymal and endothelial-to-mesenchymal transition. Inflammatory cells and cytokines play a vital role In the process of fibroblast activation. In this review, we will analyze the contribution of inflammation to the process of tissue fibrosis, the type of fibroblast activation and the therapeutic strategies targeting the inflammatory pathways in an effort to slow the progression of diabetic kidney disease.
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Affiliation(s)
- Keizo Kanasaki
- Division of Diabetology and Endocrinology, Kanazawa Medical UniversityKahoku, Japan
- *Correspondence: Keizo Kanasaki and Daisuke Koya, Division of Diabetology and Endocrinology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku Ishikawa 920-0293, Japan. e-mail: ; ; Gangadhar Taduri, Department of Nephrology, Nizam’s Institute of Medical Sciences, Punjagutta, Hyderabad 500082, Andhra Pradesh, India. e-mail:
| | - Gangadhar Taduri
- Department of Nephrology, Nizam’s Institute of Medical SciencesHyderabad, India
- *Correspondence: Keizo Kanasaki and Daisuke Koya, Division of Diabetology and Endocrinology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku Ishikawa 920-0293, Japan. e-mail: ; ; Gangadhar Taduri, Department of Nephrology, Nizam’s Institute of Medical Sciences, Punjagutta, Hyderabad 500082, Andhra Pradesh, India. e-mail:
| | - Daisuke Koya
- Division of Diabetology and Endocrinology, Kanazawa Medical UniversityKahoku, Japan
- *Correspondence: Keizo Kanasaki and Daisuke Koya, Division of Diabetology and Endocrinology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku Ishikawa 920-0293, Japan. e-mail: ; ; Gangadhar Taduri, Department of Nephrology, Nizam’s Institute of Medical Sciences, Punjagutta, Hyderabad 500082, Andhra Pradesh, India. e-mail:
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Galligan CL, Fish EN. The role of circulating fibrocytes in inflammation and autoimmunity. J Leukoc Biol 2013; 93:45-50. [DOI: 10.1189/jlb.0712365] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Rosin NL, Falkenham A, Sopel MJ, Lee TDG, Légaré JF. Regulation and role of connective tissue growth factor in AngII-induced myocardial fibrosis. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 182:714-26. [PMID: 23287510 DOI: 10.1016/j.ajpath.2012.11.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 11/09/2012] [Accepted: 11/15/2012] [Indexed: 02/06/2023]
Abstract
Exposure of rodents to angiotensin II (AngII) is a common model of fibrosis. We have previously shown that cellular infiltration of bone marrow-derived progenitor cells (fibrocytes) occurs before deposition of extracellular matrix and is associated with the production of connective tissue growth factor (CTGF). In the present study, we characterized the role of CTGF in promoting fibrocyte accumulation and regulation after AngII exposure. In animals exposed to AngII using osmotic minipumps (2.0 μg/kg per min), myocardial CTGF mRNA peaked at 6 hours (21-fold; P < 0.01), whereas transforming growth factor-β (TGF-β) peaked at 3 days (fivefold; P < 0.05) compared with saline control. Early CTGF expression occurred before fibrocyte migration (1 day) into the myocardium or ECM deposition (3 days). CTGF protein expression was evident by day 3 of AngII exposure and seemed to be localized to resident cells. Isolated cardiomyocytes and microvascular endothelial cells responded to AngII with increased CTGF production (2.1-fold and 2.8-fold, respectively; P < 0.05), which was abolished with the addition of anti-TGF-β neutralizing antibody. The effect of CTGF on isolated fibrocytes suggested a role in fibrocyte proliferation (twofold; P < 0.05) and collagen production (2.3-fold; P < 0.05). In summary, we provide strong evidence that AngII exposure first resulted in Smad2-dependent production of CTGF by resident cells (6 hours), well before the accumulation of fibrocytes or TGF-β mRNA up-regulation. In addition, CTGF contributes to fibrocyte proliferation in the myocardium and enhances fibrocyte differentiation into a myofibroblast phenotype responsible for ECM deposition.
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Affiliation(s)
- Nicole L Rosin
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
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Abstract
OBJECTIVE Autopsy and biopsy studies have shown that there is significantly more fibrosis in hearts of patients with hypertensive heart disease compared to normal hearts. Fibrocytes, a population of circulating bone marrow-derived cells, have been shown to home to tissues and promote scar formation in several diseases, but their role in human hypertensive heart disease has not been investigated to date. Our objective was to determine whether fibrocyte levels are elevated in individuals with hypertensive heart disease. METHODS We measured peripheral blood fibrocyte levels and their activated phenotypes in 12 individuals with hypertensive heart disease as determined by increased left ventricular mass on noninvasive imaging and compared them to fibrocyte levels from 19 healthy normal controls and correlated them to cardiac MRI findings. RESULTS Compared to normal controls, individuals with hypertensive heart disease had significantly higher circulating levels of total fibrocytes [median (interquartile range); 149000 (62200-220000) vs. 564500 (321000-1.2900e(+006)), P < 0.0001, respectively] as well as activated fibrocytes [15700 (6380-19800) vs. 478500 (116500-1.2360e(+006)) P < 0.0001]. Moreover, the fibrocyte subsets expressing the chemokine markers CXCR4 (P < 0.0001), CCR2 (P < 0.0001), CCR7 (P < 0.0001) and coexpression of both CXCR4 and CCR2 (P < 0.0001) were significantly elevated in patients with hypertensive heart disease compared to controls. Lastly, in patients with hypertensive heart disease there was a strong correlation between left ventricular mass index and total fibrocytes (r = 0.65, P = 0.037) and activated fibrocytes (r = 0.70, P = 0.016). CONCLUSION Our data suggest that bone marrow-derived circulating fibrocytes are associated with the presence and extent of left ventricular hypertrophy in patients with hypertensive heart disease.
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Abstract
Modulation of the RAS (renin–angiotensin system), in particular of the function of the hormones AngII (angiotensin II) and Ang-(1–7) [angiotensin-(1–7)], is an important target for pharmacotherapy in the cardiovascular system. In the classical view, such modulation affects cardiovascular cells to decrease hypertrophy, fibrosis and endothelial dysfunction, and improves diuresis. In this view, excessive stimulation of AT1 receptors (AngII type 1 receptors) fulfils a detrimental role, as it promotes cardiovascular pathogenesis, and this is opposed by stimulation of the AT2 receptor (angiotensin II type 2 receptor) and the Ang-(1–7) receptor encoded by the Mas proto-oncogene. In recent years, this view has been broadened with the observation that the RAS regulates bone marrow stromal cells and stem cells, thus involving haematopoiesis and tissue regeneration by progenitor cells. This change of paradigm has enlarged the field of perspectives for therapeutic application of existing as well as newly developed medicines that alter angiotensin signalling, which now stretches beyond cardiovascular therapy. In the present article, we review the role of AngII and Ang-(1–7) and their respective receptors in haematopoietic and mesenchymal stem cells, and discuss possible pharmacotherapeutical implications.
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Verdonk K, Danser AHJ, van Esch JHM. Angiotensin II type 2 receptor agonists: where should they be applied? Expert Opin Investig Drugs 2012; 21:501-13. [PMID: 22348403 DOI: 10.1517/13543784.2012.664131] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
INTRODUCTION Angiotensin II, the active endproduct of the renin-angiotensin system (RAS), exerts its effects via angiotensin II type 1 and type 2 (AT(1), AT(2)) receptors. AT(1) receptors mediate all well-known effects of angiotensin II, ranging from vasoconstriction to tissue remodeling. Thus, to treat cardiovascular disease, RAS blockade aims at preventing angiotensin II-AT(1) receptor interaction. Yet RAS blockade is often accompanied by rises in angiotensin II, which may exert beneficial effects via AT(2) receptors. AREAS COVERED This review summarizes our current knowledge on AT(2) receptors, describing their location, function(s), endogenous agonist(s) and intracellular signaling cascades. It discusses the beneficial effects obtained with C21, a recently developed AT(2) receptor agonist. Important questions that are addressed are do these receptors truly antagonize AT(1) receptor-mediated effects? What about their role in the diseased state and their heterodimerization with other receptors? EXPERT OPINION The general view that AT(2) receptors exclusively exert beneficial effects has been challenged, and in pathological models, their function sometimes mimics that of AT(1) receptors, for example, inducing vasoconstriction and cardiac hypertrophy. Yet given its upregulation in various pathological conditions, the AT(2) receptor remains a promising target for treatment, allowing effects beyond blood pressure-lowering, for example, in stroke, aneurysm formation, inflammation and myocardial fibrosis.
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Affiliation(s)
- Koen Verdonk
- Erasmus Medical Center, Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Rotterdam, The Netherlands
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Reduced Decorin, Fibromodulin, and Transforming Growth Factor-β3 in Deep Dermis Leads to Hypertrophic Scarring. J Burn Care Res 2012; 33:218-27. [DOI: 10.1097/bcr.0b013e3182335980] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Abstract
Renal fibrosis, particularly tubulointerstitial fibrosis, is the common final outcome of almost all progressive chronic kidney diseases. Renal fibrosis is also a reliable predictor of prognosis and a major determinant of renal insufficiency. Irrespective of the initial causes, renal fibrogenesis is a dynamic and converging process that consists of four overlapping phases: priming, activation, execution and progression. Nonresolving inflammation after a sustained injury sets up the fibrogenic stage (priming) and triggers the activation and expansion of matrix-producing cells from multiple sources through diverse mechanisms, including activation of interstitial fibroblasts and pericytes, phenotypic conversion of tubular epithelial and endothelial cells and recruitment of circulating fibrocytes. Upon activation, matrix-producing cells assemble a multicomponent, integrin-associated protein complex that integrates input from various fibrogenic signals and orchestrates the production of matrix components and their extracellular assembly. Multiple cellular and molecular events, such as tubular atrophy, microvascular rarefaction and tissue hypoxia, promote scar formation and ensure a vicious progression to end-stage kidney failure. This Review outlines our current understanding of the cellular and molecular mechanisms of renal fibrosis, which could offer novel insights into the development of new therapeutic strategies.
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Kokubo S, Sakai N, Furuichi K, Toyama T, Kitajima S, Okumura T, Matsushima K, Kaneko S, Wada T. Activation of p38 mitogen-activated protein kinase promotes peritoneal fibrosis by regulating fibrocytes. Perit Dial Int 2011; 32:10-9. [PMID: 21719683 DOI: 10.3747/pdi.2010.00200] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Peritoneal fibrosis is a serious complication of long-term peritoneal dialysis, and yet the precise pathogenic mechanisms of peritoneal fibrosis remain unknown. Fibrocytes participate in tissue fibrosis and express chemokine receptors that are necessary for migration. The p38 mitogen-activated protein kinase (MAPK) pathway regulates the production of chemokines and has been demonstrated to contribute to the pathogenesis of various fibrotic conditions. Accordingly, we used an experimental mouse model of peritoneal fibrosis to examine the dependency of fibrocytes on p38MAPK signaling. METHODS Peritoneal fibrosis was induced in mice by the injection of 0.1% chlorhexidine gluconate (CG) into the abdominal cavity. Mice were treated with FR167653, a specific inhibitor of p38MAPK, and immunohistochemical studies were performed to detect fibrocytes and cells positive for phosphorylated p38MAPK. The involvement of p38MAPK in the activation of fibrocytes also was also investigated in vitro. RESULTS Fibrocytes infiltrated peritoneum in response to CG, and that response was accompanied by progressive peritoneal fibrosis. The phosphorylation of p38MAPK, as defined by CD45+ spindle-shaped cells, was detected both in peritoneal mesothelial cells and in fibrocytes. The level of peritoneal expression of CCL2, a chemoattractant for fibrocytes, was upregulated by CG injection, and treatment with FR167653 reduced the number of cells positive for phosphorylated p38MAPK, the peritoneal expression of CCL2, and the extent of peritoneal fibrosis. Pretreatment with FR167653 inhibited the expression of procollagen type I α1 induced by transforming growth factor-β1. CONCLUSIONS Our results suggest that p38MAPK signaling contributes to peritoneal fibrosis by regulating fibrocyte function.
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Affiliation(s)
- Satoshi Kokubo
- Department of Disease Control and Homeostasis, Institute of Medical, Pharmaceutical and Health Sciences, Faculty of Medicine, Kanazawa University, Kanazawa, Japan.
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Rüster C, Wolf G. Angiotensin II as a morphogenic cytokine stimulating renal fibrogenesis. J Am Soc Nephrol 2011; 22:1189-99. [PMID: 21719784 DOI: 10.1681/asn.2010040384] [Citation(s) in RCA: 144] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Inhibitors of the renin-angiotensin-aldosterone system attenuate glomerulosclerosis and interstitial fibrosis. Although the mechanisms underlying their antifibrotic effects are complex, angiotensin II (Ang II) emerges as a major profibrogenic cytokine. Ang II modulates renal cell growth, extracellular matrix synthesis, and degradation by multiple fibrotic pathways. One of the main targets of Ang II in renal fibrosis is TGFβ. Many, but not all, of the stimulatory effects of Ang II on fibrogenesis depend on the induction of TGFβ and its downstream mediators of matrix accumulation, inflammation, and apoptosis. However because of the difficulty in targeting TGFβ, connective tissue growth factor β (CTGF), a downstream mediator of TGFβ, has become a more promising antifibrotic target. Ang II can directly induce expression of renal CTGF and mediate epithelial-mesenchymal transition. Other profibrotic factors stimulated by Ang II include endothelin-1, plasminogen activator inhibitor-1, matrix metalloproteinase (MMP)-2, and a tissue inhibitor of metalloproteinase-2. Finally, connections among Ang II, hypoxia, and the induction of hypoxia-inducible factor-1α contribute to fibrogenesis. A better understanding of the multiple morphogenic effects of Ang II may be necessary to develop better strategies to halt the progression of renal disease.
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Affiliation(s)
- Christiane Rüster
- Department of Internal Medicine III, Friedrich Schiller University, Erlanger-Allee 101, D-07740 Jena, Germany
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Scholten D, Reichart D, Paik YH, Lindert J, Bhattacharya J, Glass CK, Brenner DA, Kisseleva T. Migration of fibrocytes in fibrogenic liver injury. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 179:189-98. [PMID: 21703401 DOI: 10.1016/j.ajpath.2011.03.049] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2010] [Revised: 03/22/2011] [Accepted: 03/29/2011] [Indexed: 01/18/2023]
Abstract
CD45(+) and collagen I-positive (Col(+)) fibrocytes are implicated in fibrogenesis in skin, lungs, and kidneys. Fibrocyte migration in response to liver injury was investigated using bone marrow (BM) from chimeric mice expressing luciferase (Col-Luc→wt) or green fluorescent protein (Col-GFP→wt) under control of the α1(I) collagen promoter and enhancer, respectively. Monitored by luciferase expression, recruitment of fibrocytes was detected in CCl(4)-damaged liver and in spleen. Migration of CD45(+)Col(+) fibrocytes was regulated by chemokine receptors CCR2 and CCR1, as demonstrated, respectively, by 50% and 25% inhibition of fibrocyte migration in Col-Luc(CCR2-/-)→wt and Col-Luc(CCR1-/-)→wt mice. In addition to CCR2 and CCR1, egress of BM CD45(+)Col(+) cells was regulated by transforming growth factor-β1 (TGF-β1) and liposaccharide in vitro and in vivo, which suggests that release of TGF-β1 and increased intestinal permeability have important roles in fibrocyte trafficking. In the injured liver, fibrocytes gave rise to (myo)fibroblasts. In addition, a BM population of CD45(+)Col(+) cells capable of differentiation into fibrocytes in culture was identified. Egress of CD45(+)Col(+) cells from BM was detected in the absence of injury or stress in aged mice but not in young mice. Development of liver fibrosis was also increased in aged mice and correlated with high numbers of liver fibrocytes. In conclusion, in response to liver injury, fibrocytes migrate from BM to the liver. Their migration is regulated by CCR2 and CCR1 but is compromised with age.
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Affiliation(s)
- David Scholten
- Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
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Myocardial fibrosis in response to Angiotensin II is preceded by the recruitment of mesenchymal progenitor cells. J Transl Med 2011; 91:565-78. [PMID: 21116240 DOI: 10.1038/labinvest.2010.190] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Myocardial fibrosis is characterized by significant extracellular matrix (ECM) deposition. The specific cellular mediators that contribute to the development of fibrosis are not well understood. Using a model of fibrosis with Angiotensin II (AngII) infusion, our aim was to characterize the cellular elements involved in the development of myocardial fibrosis. Male C57Bl/6 and Tie2-GFP mice were given AngII (2.0 mg/kg/min) or saline (control) via mini osmotic pumps for up to 7 days. Hearts were harvested, weighed and processed for analysis. Cellular infiltration and collagen deposition were quantified. Immunostaining was performed for specific markers of leukocytes (CD45, CD11b), myofibroblasts (SMA), endothelial cells (vWF) and hematopoietic progenitor cells (CD133). Bone marrow (BM) origin of infiltrating cells was assessed using GFP(+) chimeric animals. Relative qRT-PCR was performed for pro-fibrotic cytokines (transforming growth factor (TGF)-β1, CTGF) as well as the chemokine stromal-derived factor (SDF)-1α. Myocardial-infiltrating cells were grown in vitro. AngII exposure resulted in multifocal myocardial cellular infiltration, which preceded extensive ECM deposition. A limited number of myocardial-infiltrating cells were positive for leukocyte markers but were significantly positive for myofibroblast (SMA) and endothelial cell (vWF) markers. However, using Tie2-GFP mice, where endothelial cells are GFP(+), myocardial-infiltrating cells were not GFP(+). Transcript levels for SDF-1α were significantly elevated at 1 day of AngII exposure suggesting that hematopoietic progenitor cells may be recruited. This was confirmed by positive CD133 staining of infiltrating cells and evident GFP(+) cellular infiltration when exposing GFP(+) BM chimeras to AngII. Furthermore, a significant number of CD133(+)/SMA(+) cells were grown in vitro from the myocardium of AngII-exposed animals (P<0.01). Myocardial ECM deposition is preceded by the infiltration of the myocardium with hematopoietic cells that express mesenchymal markers. These data suggest that mesenchymal progenitor cells are recruited, and may have a primary role, in the initiation of myocardial fibrosis.
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