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Wang WW, Yu HZ, Yang X, Xu QQ, Yan HH, Liu JR. High Levels of Heat Shock Protein 47 in the Aqueous Humor of Patients with Acute Primary Angle Closure. Ophthalmic Res 2022; 66:307-311. [PMID: 36315987 DOI: 10.1159/000527634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
INTRODUCTION Acute primary angle closure (APAC) is often characterized by acute elevation of intraocular pressure accompanied by severe ocular and systemic symptoms. Excessive collagen accumulation, which can be caused by upregulated heat shock protein 47 (HSP47) expression, can produce scarring in rat conjunctival blebs. Meanwhile, the presence of HSP47 in human aqueous humor and its levels are yet to be determined. METHODS We examined 32 consecutive patients with APAC and 16 age-matched participants without APAC scheduled for cataract surgery who were enrolled as a control group. Aqueous humor samples were collected from all subjects at the time of surgery and compared between the subjects with and without APAC. RESULTS The levels of HSP47 in the aqueous humor of patients with APAC (1,210.4 ± 450.2 pg/mL) were found to be significantly increased (p = 0.001) compared with those in the control group (863.4 ± 240.0 pg/mL). Notably, the levels of HSP47 negatively correlated with the age of patients with APAC (p = 0.023). CONCLUSION HSP47 was upregulated in the aqueous humor of patients with APAC and may play a role in scarring after trabeculectomy for APAC.
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Affiliation(s)
- Wei-Wei Wang
- Shaanxi Eye Hospital, Xi'an People' s Hospital (Xi'an Fourth Hospital), Affiliated Guangren Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Hai-Zhen Yu
- Department of Clinical Laboratory, Xi'an People' s Hospital (Xi'an Fourth Hospital), Affiliated Guangren Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Xin Yang
- Shaanxi Eye Hospital, Xi'an People' s Hospital (Xi'an Fourth Hospital), Affiliated Guangren Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Qian-Qian Xu
- Shaanxi Eye Hospital, Xi'an People' s Hospital (Xi'an Fourth Hospital), Affiliated Guangren Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Huan-Huan Yan
- Shaanxi Eye Hospital, Xi'an People' s Hospital (Xi'an Fourth Hospital), Affiliated Guangren Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, China
| | - Jian-Rong Liu
- Shaanxi Eye Hospital, Xi'an People' s Hospital (Xi'an Fourth Hospital), Affiliated Guangren Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, China
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Guo Q, Tian Q, Tian X, Liu T. Effect of Regulating the Expression of HSP47 on Collagen Metabolism in Scleral Fibroblasts. Curr Eye Res 2020; 46:408-416. [PMID: 32814454 DOI: 10.1080/02713683.2020.1805471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE To explore the effect of heat shock protein 47 (HSP 47) on collagen (types I, III, and V) metabolism in scleral fibroblasts. METHODS Scleral fibroblasts with over- or low-expression of HSP 47 were constructed by plasmid transfection. The mRNA and intracellular proteins expression of HSP 47, collagen (types I, III, and V) and α-smooth muscle actin (α-SMA) were detected by quantitative real-time polymerase chain reaction and western blot. The proteins expression of collagen (types I, III, and V), matrix metalloproteinase 2 (MMP-2), and tissue inhibitor of matrix metalloproteinases 1 and 2 (TIMP-1 and -2) in extracellular matrix (ECM) were detected by ELISA. The migration and proliferation activities of cells were detected by scratch-wound assay and MTS. The internal structure of scleral fibroblasts was observed by transmission electron microscopy (TEM). RESULTS The results obtained demonstrated significant increases in the expression of the mRNA and protein expression of collagen I in HSP47 up-regulated cells. Overexpression of HSP 47 promotes the expression of α-SMA and cell migration. Down-regulated expression of HSP 47 results in decreased mRNA and protein expression of collagen. Low expression of HSP 47 significantly inhibits cell migration and proliferation, and affects the internal structure of cells. CONCLUSION HSP 47 affects collagen metabolism in scleral fibroblasts. It appears to promote the synthesis and secretion of collagen I as well as inhibit degradation.
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Affiliation(s)
- Qingge Guo
- Affiliated Hospital of Zunyi Medical College, Guizhou Ophthalmic Hospital , Zunyi, Guizhou, China
| | - Qingshan Tian
- Affiliated Hospital of Zunyi Medical College, Guizhou Ophthalmic Hospital , Zunyi, Guizhou, China
| | - Xiang Tian
- Affiliated Hospital of Zunyi Medical College, Guizhou Ophthalmic Hospital , Zunyi, Guizhou, China
| | - Taixiang Liu
- Affiliated Hospital of Zunyi Medical College, Guizhou Ophthalmic Hospital , Zunyi, Guizhou, China
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Zhou R, Ren S, Li C, Zhang X, Zhang W. miR-29a is a potential protective factor for fibrogenesis in gluteal muscle contracture. Physiol Res 2020; 69:467-479. [PMID: 32469233 DOI: 10.33549/physiolres.934295] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Circulating miRNAs have been proposed as the effective diagnostic biomarkers for muscular fibrosis-associated diseases. However, circulating biomarkers for early diagnosis of contracture muscles are limited in gluteal muscle contracture (GMC) patients. Here we sought to explore the abnormally expressed miRNAs in plasma and contraction bands of GMC patients. The results showed miR-29a-3p expression in plasma and contraction bands tissue was significantly reduced in GMC patients compared with normal control. Cell viability and levels of proliferation-associated protein cyclin D1 and cyclin-dependent-kinase 2 (CDK2) were powerfully inhibited by miR-29a mimics and enhanced by miR-29a inhibitor compared with negative control. Furthermore, miR-29a mimics effectively impeded, while miR-29a inhibitor enhanced the expression of collagen I and collagen III, followed by the secretion of transforming growth factor beta1 (TGF-beta1), TGF-beta3 and connective tissue growth factor (CTGF) in primary human contraction bands (CB) fibroblasts. The miR-29a-3p negatively regulated the expression of TGF-beta1 through binding to the 3´ UTR region of SERPINH1 (encoding heat shock protein HSP47), but had no effect on Smad2 activity. The miR-29a-3p was inversely correlated with HSP47 in contraction bands tissue from GMC patients. Collectively, miR-29a was notably depressed and regulated cell viability and fibrosis by directly targeting HSP47 in GMC, which suggest that circulating miR-29a might be a potential biomarker for early diagnosis and provides a novel therapeutic target for GMC.
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Affiliation(s)
- R Zhou
- Department of Sports Medicine, Peking University Shenzhen Hospital, Shenzhen, China.
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Zada M, Pattamatta U, White A. Modulation of Fibroblasts in Conjunctival Wound Healing. Ophthalmology 2017; 125:179-192. [PMID: 29079272 DOI: 10.1016/j.ophtha.2017.08.028] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 07/18/2017] [Accepted: 08/21/2017] [Indexed: 12/20/2022] Open
Abstract
Modulating conjunctival wound healing has the potential to improve outcomes after glaucoma filtration surgery and for several ocular disorders, including ocular cicatrial pemphigoid, vernal keratoconjunctivitis, and pterygium. Although anti-inflammatories and antimetabolites have been used with success, these nonspecific agents are not without their complications. The search for novel and more targeted means to control conjunctival fibrosis without such limitations has brought much attention to the regulation of fibroblast proliferation, differentiation, extracellular matrix production, and apoptosis. This review provides an update on where we stand with current antifibrotic agents and outlines the strategies that novel agents use, as they evolve from the bench to the bedside.
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Affiliation(s)
- Mark Zada
- Glaucoma Cell Biology Group, The Westmead Institute for Medical Research, NSW, Australia; Discipline of Ophthalmology, Sydney Medical School, University of Sydney, NSW, Australia.
| | - Ushasree Pattamatta
- Glaucoma Cell Biology Group, The Westmead Institute for Medical Research, NSW, Australia; Discipline of Ophthalmology, Sydney Medical School, University of Sydney, NSW, Australia
| | - Andrew White
- Glaucoma Cell Biology Group, The Westmead Institute for Medical Research, NSW, Australia; Discipline of Ophthalmology, Sydney Medical School, University of Sydney, NSW, Australia; Save Sight Institute, University of Sydney, NSW, Australia
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Chebotareva N, Bobkova I, Shilov E. Heat shock proteins and kidney disease: perspectives of HSP therapy. Cell Stress Chaperones 2017; 22:319-343. [PMID: 28409327 PMCID: PMC5425374 DOI: 10.1007/s12192-017-0790-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/11/2017] [Accepted: 03/20/2017] [Indexed: 12/11/2022] Open
Abstract
Heat shock proteins (HSPs) mediate a diverse range of cellular functions, prominently including folding and regulatory processes of cellular repair. A major property of these remarkable proteins, dependent on intracellular or extracellular location, is their capacity for immunoregulation that optimizes immune activity while avoiding hyperactivated inflammation. In this review, recent investigations are described, which examine roles of HSPs in protection of kidney tissue from various traumatic influences and demonstrate their potential for clinical management of nephritic disease. The HSP70 class is particularly attractive in this respect due to its multiple protective effects. The review also summarizes current understanding of HSP bioactivity in the pathophysiology of various kidney diseases, including acute kidney injury, diabetic nephropathy, chronic glomerulonephritis, and lupus nephritis-along with other promising strategies for their remediation, such as DNA vaccination.
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Affiliation(s)
- Natalia Chebotareva
- I.M. Sechenov First Moscow State Medical University, 2-4 Bolshaya Pirogovskaya st., Moscow, Russia, 119992.
| | - Irina Bobkova
- I.M. Sechenov First Moscow State Medical University, 2-4 Bolshaya Pirogovskaya st., Moscow, Russia, 119992
| | - Evgeniy Shilov
- I.M. Sechenov First Moscow State Medical University, 2-4 Bolshaya Pirogovskaya st., Moscow, Russia, 119992
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Lee K, Hong S, Seong GJ, Kim CY. Cigarette Smoke Extract Causes Injury in Primary Retinal Ganglion Cells via Apoptosis and Autophagy. Curr Eye Res 2016; 41:1367-1372. [PMID: 27044350 DOI: 10.3109/02713683.2015.1119856] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 10/25/2015] [Accepted: 11/08/2015] [Indexed: 01/07/2023]
Abstract
AIMS To investigate whether tobacco smoke directly injures retinal ganglion cells (RGCs) and to evaluate the mechanisms of cell death. METHODS Primary rat RGCs were harvested from 3- or 4-day-old newborn rats and exposed to cigarette smoke extract (CSE). Cell viability was determined by adenosine 5'-triphosphate (ATP) assay. Apoptosis was evaluated by terminal deoxynucleotidyl transferase (TdT)-mediated deoxyuridine triphosphate (dUTP) nick-end labeling (TUNEL) and real-time reverse transcription polymerase chain reaction (RT-PCR) for Bcl-2 family. Autophagy was also assessed by Western immunoblots for light chain (LC) 3B. RESULTS When the primary RGCs were exposed to CSE for 2 h, cell viability decreased in a dose-dependent manner, as measured by ATP assay. In the presence of 0.05% CSE, the RGC viability was 77.68% ± 7.60% compared to the control cells; in the presence of 1.0% CSE, viability was 47.48% ± 2.56% of the control cells. As determined by TUNEL, CSE increased the apoptotic RGCs in a dose-dependent manner. In the presence of 0.05% CSE, the apoptosis was 26.55% ± 1.97% of the control cells; in the presence of 2.5% CSE, it was 41.07% ± 3.75% of the control cells. When apoptosis was evaluated using real-time RT-PCR, exposure to 0.05% CSE resulted in significantly increased expression of Bad, Bax, Bcl-2, and Bcl-XL mRNA. When autophagy was assessed by Western immunoblots, exposure to 0.05% CSE significantly increased the expression of LC3B II. CONCLUSIONS Our data suggest that CSE directly injures primary RGCs, and both cell death mechanisms of apoptosis and autophagy seem to be related to this CSE-induced RGC damage.
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Affiliation(s)
- Kwanghyun Lee
- a Department of Ophthalmology, Severance Hospital , Institute of Vision Research, Yonsei University College of Medicine , Seoul , Korea
| | - Samin Hong
- a Department of Ophthalmology, Severance Hospital , Institute of Vision Research, Yonsei University College of Medicine , Seoul , Korea
| | - Gong Je Seong
- a Department of Ophthalmology, Severance Hospital , Institute of Vision Research, Yonsei University College of Medicine , Seoul , Korea
| | - Chan Yun Kim
- a Department of Ophthalmology, Severance Hospital , Institute of Vision Research, Yonsei University College of Medicine , Seoul , Korea
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Hong S, Han SH, Kim CY, Kim KY, Song YK, Seong GJ. Brimonidine reduces TGF-beta-induced extracellular matrix synthesis in human Tenon's fibroblasts. BMC Ophthalmol 2015; 15:54. [PMID: 26017119 PMCID: PMC4454273 DOI: 10.1186/s12886-015-0045-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 08/12/2014] [Indexed: 11/19/2022] Open
Abstract
Background Brimonidine is a highly selective α2 adrenergic agonist that has been widely used in anti-glaucoma eyedrops. The aim of this study was to investigate its putative anti-fibrotic role in the fibrosis caused by activated Tenon’s fibroblasts. Methods Primary cultured human Tenon’s fibroblasts were exposed to 2.0 ng/mL of transforming growth factor-β1 (TGF-β1) for up to 48 h. In the presence of various concentrations of brimonidine (from 0.0 to 10.0 μM), the expression levels of fibronectin, collagen types I and III, and β-actin were determined by Western immunoblots. The expression of phosphorylated SMAD2/3 (p-SMAD2/3) was then evaluated using immunofluorescence. Results TGF-β1 significantly increased the synthesis of fibronectin and collagens in human Tenon’s fibroblasts; however brimonidine treatment distinctly attenuated the TGF-β1-induced production of extracellular matrix (ECM) proteins. TGF-β1 also changed the cellular morphology to be plump, while brimonidine treatment returned the cells to a spindle shape, similar to control fibroblasts. Regarding p-SMAD2/3, brimonidine treatment did not show any apparent changes in its expression. Conclusions Our data revealed that brimonidine reduces TGF-β-induced ECM synthesis in human Tenon’s fibroblasts in vitro. This finding implies that topical administration of brimonidine may be helpful in reducing the fibrosis caused by the long-term use of topical anti-glaucoma medications. Electronic supplementary material The online version of this article (doi:10.1186/s12886-015-0045-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Samin Hong
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea
| | - Sueng-Han Han
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea
| | - Chan Yun Kim
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea
| | - Kang Yoon Kim
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea
| | - Yoo Kyung Song
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea
| | - Gong Je Seong
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea.
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Singh K, Agrawal NK, Gupta SK, Mohan G, Chaturvedi S, Singh K. Decreased expression of heat shock proteins may lead to compromised wound healing in type 2 diabetes mellitus patients. J Diabetes Complications 2015; 29:578-88. [PMID: 25746357 DOI: 10.1016/j.jdiacomp.2015.01.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/09/2015] [Accepted: 01/11/2015] [Indexed: 12/24/2022]
Abstract
BACKGROUND Heat shock proteins (HSPs) are inducible stress proteins expressed in cells exposed to stress. HSPs promote wound healing by recruitment of dermal fibroblasts to the site of injury and bring about protein homeostasis. Diabetic wounds are hard to heal and inadequate HSPs may be important contributors in the etiology of diabetic foot ulcers (DFU). OBJECTIVE To analyze the differential expression of HSPs and their downstream molecules in human diabetic wounds compared to control wounds. METHODS Expressional levels of HSP27, HSP47 and HSP70 and their downstream molecules like TLR4, p38-MAPK were seen in biopsies from 101 human diabetic wounds compared to 8 control subjects without diabetes using RT-PCR, western blot and immunohistochemistry. RESULTS Our study suggested a significant down regulation of HSP70, HSP47 and HSP27 (p value=<0.001 for HSP70; p value=0.007 for HSP47; p value=0.007 for HSP27) in DFU along with their downstream molecules TLR4 and p38-MAPK (p value=0.006 for p38-MAPK; p value=0.02 for TLR4). HSP70 levels were significantly lower in male subjects and their levels increased significantly with the grades of wound on Wagner's scale. Infection status of the wounds was found to be significantly associated with the increased levels of HSP70 and HSP27 in infected diabetic wounds. CONCLUSIONS Our study demonstrates that the down regulation of HSPs in diabetic wounds is associated with wound healing impairment in T2DM subjects.
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Affiliation(s)
- Kanhaiya Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi-221005, India
| | - Neeraj K Agrawal
- Department of Endocrinology and Metabolism, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Sanjeev K Gupta
- Department of Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Gyanendra Mohan
- Indian Railway Cancer Institute and Research Centre, N.E.R., Varanasi, 221002, India
| | - Sunanda Chaturvedi
- Indian Railway Cancer Institute and Research Centre, N.E.R., Varanasi, 221002, India
| | - Kiran Singh
- Department of Molecular & Human Genetics, Banaras Hindu University, Varanasi-221005, India.
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Wang W, Zhao J, Yang G, Cheng G, Yang X. Heat shock protein 47 is up-regulated in conjunctival bleb scarring after filtration surgery in rats. Graefes Arch Clin Exp Ophthalmol 2014; 253:91-7. [PMID: 25301395 DOI: 10.1007/s00417-014-2818-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 09/15/2014] [Accepted: 09/23/2014] [Indexed: 01/04/2023] Open
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