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Chandrakumar S, Santiago Tierno I, Agarwal M, Lessieur EM, Du Y, Tang J, Kiser J, Yang X, Rodriguez A, Kern TS, Ghosh K. Mechanical Regulation of Retinal Vascular Inflammation and Degeneration in Diabetes. Diabetes 2024; 73:280-291. [PMID: 37986627 PMCID: PMC10796303 DOI: 10.2337/db23-0584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 11/06/2023] [Indexed: 11/22/2023]
Abstract
Vascular inflammation is known to cause degeneration of retinal capillaries in early diabetic retinopathy (DR), a major microvascular complication of diabetes. Past studies investigating these diabetes-induced retinal vascular abnormalities have focused primarily on the role of molecular or biochemical cues. Here we show that retinal vascular inflammation and degeneration in diabetes are also mechanically regulated by the increase in retinal vascular stiffness caused by overexpression of the collagen-cross-linking enzyme lysyl oxidase (LOX). Treatment of diabetic mice with LOX inhibitor β-aminopropionitrile (BAPN) prevented the increase in retinal capillary stiffness, vascular intracellular adhesion molecule-1 overexpression, and leukostasis. Consistent with these anti-inflammatory effects, BAPN treatment of diabetic mice blocked the upregulation of proapoptotic caspase-3 in retinal vessels, which concomitantly reduced retinal capillary degeneration, pericyte ghost formation, and the diabetes-induced loss of contrast sensitivity in these mice. Finally, our in vitro studies indicate that retinal capillary stiffening is sufficient to increase the adhesiveness and neutrophil elastase-induced death of retinal endothelial cells. By uncovering a link between LOX-dependent capillary stiffening and the development of retinal vascular and functional defects in diabetes, these findings offer a new insight into DR pathogenesis that has important translational potential. ARTICLE HIGHLIGHTS
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Affiliation(s)
- Sathishkumar Chandrakumar
- Department of Ophthalmology, University of California, Los Angeles, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
| | - Irene Santiago Tierno
- Department of Ophthalmology, University of California, Los Angeles, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
- Molecular, Cellular, and Integrative Physiology Interdepartmental PhD Program, University of California, Los Angeles, Los Angeles, CA
| | - Mahesh Agarwal
- Department of Ophthalmology, University of California, Los Angeles, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
| | - Emma M. Lessieur
- Department of Ophthalmology, Center for Translational Vision Research, University of California, Irvine, Irvine, CA
- Gavin Herbert Eye Institute, University of California, Irvine, CA
| | - Yunpeng Du
- Department of Ophthalmology, Center for Translational Vision Research, University of California, Irvine, Irvine, CA
- Gavin Herbert Eye Institute, University of California, Irvine, CA
| | - Jie Tang
- Department of Ophthalmology and Visual Science, Case Western Reserve University, Cleveland, OH
| | - Jianying Kiser
- Department of Ophthalmology, Center for Translational Vision Research, University of California, Irvine, Irvine, CA
- Gavin Herbert Eye Institute, University of California, Irvine, CA
| | - Xiao Yang
- Department of Bioengineering, University of California, Riverside, Riverside, CA
| | | | - Timothy S. Kern
- Department of Ophthalmology, Center for Translational Vision Research, University of California, Irvine, Irvine, CA
- Gavin Herbert Eye Institute, University of California, Irvine, CA
| | - Kaustabh Ghosh
- Department of Ophthalmology, University of California, Los Angeles, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
- Molecular, Cellular, and Integrative Physiology Interdepartmental PhD Program, University of California, Los Angeles, Los Angeles, CA
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Lin W, Song Y, Li T, Yan J, Zhang R, Han L, Ba X, Huang Y, Qin K, Chen Z, Wang Y, Tu S, Huang Y. Triptolide attenuates pulmonary fibrosis by inhibiting fibrotic extracellular matrix remodeling mediated by MMPs/LOX/integrin. Biomed Pharmacother 2023; 166:115394. [PMID: 37660647 DOI: 10.1016/j.biopha.2023.115394] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/24/2023] [Accepted: 08/26/2023] [Indexed: 09/05/2023] Open
Abstract
BACKGROUND Fibrotic extracellular matrix (ECM) remodeling characterized different types of pulmonary fibrosis, and its regulation could be a potential shared treatment strategy for pulmonary fibrosis. PURPOSE We aimed to investigate the effect of triptolide on pulmonary fibrosis through the inhibition of several important aspects of fibrotic ECM remodeling. METHODS Bleomycin-induced pulmonary fibrosis mice and TGF-β1-induced primary lung fibroblasts were used. The effect of triptolide on pulmonary fibrosis was detected using histopathology, immunostaining, RT-qPCR, western blotting, ELISA, and protein activity assay. RESULTS Triptolide significantly alleviated bleomycin-induced pulmonary fibrosis in mice. It inhibited the expression of fibrotic genes α-SMA, collagen I, fibronectin, and vimentin and blocked the TGF-β-SMAD signaling pathway both in vivo and in vitro. In addition, triptolide regulated the expression and activity of MMPs during fibrosis. Interestingly, it suppressed the expression of lysyl oxidase, which was responsible for matrix cross-linking and elevated ECM stiffness. Furthermore, triptolide blocked the biomechanical stress transduction pathway integrin-β1-FAK-YAP signaling and attenuated the pro-fibrotic feedback of fibrotic ECM on fibroblasts via integrin inhibition. CONCLUSION These findings show that triptolide prevents the key linkages of fibrotic ECM remodeling, including deposition, degradation, cross-linking, and pro-fibrotic feedback and, therefore, has potential therapeutic value for pulmonary fibrosis.
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Affiliation(s)
- Weiji Lin
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yaqin Song
- Department of Emergency Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Tingting Li
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiahui Yan
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ruiyuan Zhang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liang Han
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Ba
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yao Huang
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Qin
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhe Chen
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Wang
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shenghao Tu
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Huang
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Nguyen PK, Hall K, Holt I, Kuo CK. Recombinant lysyl oxidase effects on embryonic tendon cell phenotype and behavior. J Orthop Res 2023; 41:2175-2185. [PMID: 37365857 DOI: 10.1002/jor.25655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 05/11/2023] [Accepted: 06/21/2023] [Indexed: 06/28/2023]
Abstract
Lysyl oxidase (LOX) plays an important role in the elaboration of tendon mechanical properties during embryonic development by mediating enzymatic collagen crosslinking. We previously showed recombinant LOX (rLOX) treatment of developing tendon significantly increased LOX-mediated collagen crosslink density to enhance tendon mechanical properties at different stages of tissue formation. Working toward the future development of rLOX-based therapeutic strategies to enhance mechanical properties of tendons that are compromised, such as after injury or due to abnormal development, this study characterized the direct effects of rLOX treatment on embryonic tendon cells from different stages of tissue formation. Tendon cell morphology, proliferation rate, proliferative capacity, and metabolic activity were not affected by rLOX treatment. Tenogenic phenotype was stable with rLOX treatment, reflected by no change in cell morphology or tendon marker messenger RNA (mRNA) levels assessed by reverse-transcription polymerase chain reaction. Collagen mRNA levels also remained constant. Matrix metalloproteinase-9 expression levels were downregulated in later stage tendon cells, but not in earlier stage cells, whereas enzyme activity levels were undetected. Bone morphogenetic protein-1 (BMP-1) expression was upregulated in earlier stage tendon cells, but not in later stage cells. Furthermore, BMP-1 activity was unchanged when intracellular LOX enzyme activity levels were upregulated in both stage cells, suggesting exogenous rLOX may have entered the cells. Based on our data, rLOX treatment had minimal effects on tendon cell phenotype and behaviors. These findings will inform future development of LOX-focused treatments to enhance tendon mechanical properties without adverse effects on tendon cell phenotype and behaviors.
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Affiliation(s)
- Phong K Nguyen
- Department of Biomedical Engineering, University of Rochester, Rochester, New York, USA
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - Kaitlyn Hall
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - Iverson Holt
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - Catherine K Kuo
- Department of Biomedical Engineering, University of Rochester, Rochester, New York, USA
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
- Department of Orthopaedics, University of Rochester Medical Center, Rochester, New York, USA
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
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Liu X, Li J, Yang X, Li X, Kong J, Qi D, Zhang F, Sun B, Liu Y, Liu T. Carcinoma-associated fibroblast-derived lysyl oxidase-rich extracellular vesicles mediate collagen crosslinking and promote epithelial-mesenchymal transition via p-FAK/p-paxillin/YAP signaling. Int J Oral Sci 2023; 15:32. [PMID: 37532712 PMCID: PMC10397209 DOI: 10.1038/s41368-023-00236-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 07/05/2023] [Accepted: 07/05/2023] [Indexed: 08/04/2023] Open
Abstract
Carcinoma-associated fibroblasts (CAFs) are the main cellular components of the tumor microenvironment and promote cancer progression by modifying the extracellular matrix (ECM). The tumor-associated ECM is characterized by collagen crosslinking catalyzed by lysyl oxidase (LOX). Small extracellular vesicles (sEVs) mediate cell-cell communication. However, the interactions between sEVs and the ECM remain unclear. Here, we demonstrated that sEVs released from oral squamous cell carcinoma (OSCC)-derived CAFs induce collagen crosslinking, thereby promoting epithelial-mesenchymal transition (EMT). CAF sEVs preferably bound to the ECM rather than being taken up by fibroblasts and induced collagen crosslinking, and a LOX inhibitor or blocking antibody suppressed this effect. Active LOX (αLOX), but not the LOX precursor, was enriched in CAF sEVs and interacted with periostin, fibronectin, and bone morphogenetic protein-1 on the surface of sEVs. CAF sEV-associated integrin α2β1 mediated the binding of CAF sEVs to collagen I, and blocking integrin α2β1 inhibited collagen crosslinking by interfering with CAF sEV binding to collagen I. CAF sEV-induced collagen crosslinking promoted the EMT of OSCC through FAK/paxillin/YAP pathway. Taken together, these findings reveal a novel role of CAF sEVs in tumor ECM remodeling, suggesting a critical mechanism for CAF-induced EMT of cancer cells.
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Affiliation(s)
- Xue Liu
- Department of Oral Pathology, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Jiao Li
- Department of Oral Pathology, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Xuesong Yang
- Department of Biochemistry and Molecular Biology, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, Dalian Medical University, Dalian, China
| | - Xiaojie Li
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Jing Kong
- School of Stomatology, Dalian Medical University, Dalian, China
| | - Dongyuan Qi
- Department of Oral Surgery, the First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Fuyin Zhang
- Department of Oral Surgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Bo Sun
- Department of Oral Surgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yuehua Liu
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China.
- Department of Orthodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China.
| | - Tingjiao Liu
- Department of Oral Pathology, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China.
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, China.
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5
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Chandrakumar S, Santiago Tierno I, Agarwal M, Matisioudis N, Kern TS, Ghosh K. Subendothelial Matrix Stiffening by Lysyl Oxidase Enhances RAGE-Mediated Retinal Endothelial Activation in Diabetes. Diabetes 2023; 72:973-985. [PMID: 37058096 PMCID: PMC10281239 DOI: 10.2337/db22-0761] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 03/30/2023] [Indexed: 04/15/2023]
Abstract
Endothelial cell (EC) activation is a crucial determinant of retinal vascular inflammation associated with diabetic retinopathy (DR), a major microvascular complication of diabetes. We previously showed that, similar to abnormal biochemical factors, aberrant mechanical cues in the form of lysyl oxidase (LOX)-dependent subendothelial matrix stiffening also contribute significantly to retinal EC activation in diabetes. Yet, how LOX is itself regulated and precisely how it mechanically controls retinal EC activation in diabetes is poorly understood. Here, we show that high-glucose-induced LOX upregulation in human retinal ECs (HRECs) is mediated by proinflammatory receptor for advanced glycation end products (RAGE). HRECs treated with methylglyoxal (MGO), an active precursor to the advanced glycation end product (AGE) MG-H1, exhibited LOX upregulation that was blocked by a RAGE inhibitor, thus confirming the ability of RAGE to promote LOX expression. Crucially, as a downstream effector of RAGE, LOX was found to mediate both the proinflammatory and matrix remodeling effects of AGE/RAGE, primarily through its ability to crosslink or stiffen matrix. Finally, using decellularized HREC-derived matrices and a mouse model of diabetes, we demonstrate that LOX-dependent matrix stiffening feeds back to enhance RAGE, thereby achieving its autoregulation and proinflammatory effects. Collectively, these findings provide fresh mechanistic insights into the regulation and proinflammatory role of LOX-dependent mechanical cues in diabetes while simultaneously implicating LOX as an alternative (downstream) target to block AGE/RAGE signaling in DR. ARTICLE HIGHLIGHTS We investigated the regulation and proinflammatory role of retinal endothelial lysyl oxidase (LOX) in diabetes. Findings reveal that LOX is upregulated by advanced glycation end products (AGE) and receptor for AGE (RAGE) and mediates AGE/RAGE-induced retinal endothelial cell activation and subendothelial matrix remodeling. We also show that LOX-dependent subendothelial matrix stiffening feeds back to enhance retinal endothelial RAGE. These findings implicate LOX as a key proinflammatory factor and an alternative (downstream) target to block AGE/RAGE signaling in diabetic retinopathy.
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Affiliation(s)
- Sathishkumar Chandrakumar
- Department of Bioengineering, University of California, Riverside, CA
- Department of Ophthalmology, University of California, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
| | - Irene Santiago Tierno
- Department of Ophthalmology, University of California, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
- Molecular, Cellular, and Integrated Physiology Interdepartmental PhD Program, University of California, Los Angeles, CA
| | - Mahesh Agarwal
- Department of Ophthalmology, University of California, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
| | | | - Timothy S. Kern
- Department of Ophthalmology, University of California, Irvine, CA
- Gavin Herbert Eye Institute, University of California, Irvine, CA
| | - Kaustabh Ghosh
- Department of Bioengineering, University of California, Riverside, CA
- Department of Ophthalmology, University of California, Los Angeles, CA
- Doheny Eye Institute, Pasadena, CA
- Molecular, Cellular, and Integrated Physiology Interdepartmental PhD Program, University of California, Los Angeles, CA
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6
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Nguyen PK, Hart C, Hall K, Holt I, Kuo CK. Establishing in vivo and ex vivo chick embryo models to investigate fetal tendon healing. Sci Rep 2023; 13:9600. [PMID: 37311784 DOI: 10.1038/s41598-023-35408-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 05/17/2023] [Indexed: 06/15/2023] Open
Abstract
Injured adult tendons heal fibrotically and possess high re-injury rates, whereas fetal tendons appear to heal scarlessly. However, knowledge of fetal tendon wound healing is limited due in part to the need for an accessible animal model. Here, we developed and characterized an in vivo and ex vivo chick embryo tendon model to study fetal tendon healing. In both models, injury sites filled rapidly with cells and extracellular matrix during healing, with wound closure occurring faster in vivo. Tendons injured at an earlier embryonic stage improved mechanical properties to levels similar to non-injured controls, whereas tendons injured at a later embryonic stage did not. Expression levels of tendon phenotype markers, collagens, collagen crosslinking regulators, matrix metalloproteinases, and pro-inflammatory mediators exhibited embryonic stage-dependent trends during healing. Apoptosis occurred during healing, but ex vivo tendons exhibited higher levels of apoptosis than tendons in vivo. Future studies will use these in vivo and ex vivo chick embryo tendon injury models to elucidate mechanisms of stage-specific fetal tendon healing to inform the development of therapeutic approaches to regeneratively heal adult tendons.
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Affiliation(s)
- Phong K Nguyen
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Fischell Department of Bioengineering, University of Maryland, 4108 A. James Clark Hall, 8278 Paint Branch Drive, College Park, MD, 20742, USA
| | - Christoph Hart
- Fischell Department of Bioengineering, University of Maryland, 4108 A. James Clark Hall, 8278 Paint Branch Drive, College Park, MD, 20742, USA
| | - Kaitlyn Hall
- Fischell Department of Bioengineering, University of Maryland, 4108 A. James Clark Hall, 8278 Paint Branch Drive, College Park, MD, 20742, USA
| | - Iverson Holt
- Fischell Department of Bioengineering, University of Maryland, 4108 A. James Clark Hall, 8278 Paint Branch Drive, College Park, MD, 20742, USA
| | - Catherine K Kuo
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA.
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA.
- Fischell Department of Bioengineering, University of Maryland, 4108 A. James Clark Hall, 8278 Paint Branch Drive, College Park, MD, 20742, USA.
- Department of Orthopaedics, University of Rochester Medical Center, Rochester, NY, USA.
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA.
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Jääskeläinen I, Petäistö T, Mirzarazi Dahagi E, Mahmoodi M, Pihlajaniemi T, Kaartinen MT, Heljasvaara R. Collagens Regulating Adipose Tissue Formation and Functions. Biomedicines 2023; 11:biomedicines11051412. [PMID: 37239083 DOI: 10.3390/biomedicines11051412] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/28/2023] [Accepted: 05/03/2023] [Indexed: 05/28/2023] Open
Abstract
The globally increasing prevalence of obesity is associated with the development of metabolic diseases such as type 2 diabetes, dyslipidemia, and fatty liver. Excess adipose tissue (AT) often leads to its malfunction and to a systemic metabolic dysfunction because, in addition to storing lipids, AT is an active endocrine system. Adipocytes are embedded in a unique extracellular matrix (ECM), which provides structural support to the cells as well as participating in the regulation of their functions, such as proliferation and differentiation. Adipocytes have a thin pericellular layer of a specialized ECM, referred to as the basement membrane (BM), which is an important functional unit that lies between cells and tissue stroma. Collagens form a major group of proteins in the ECM, and some of them, especially the BM-associated collagens, support AT functions and participate in the regulation of adipocyte differentiation. In pathological conditions such as obesity, AT often proceeds to fibrosis, characterized by the accumulation of large collagen bundles, which disturbs the natural functions of the AT. In this review, we summarize the current knowledge on the vertebrate collagens that are important for AT development and function and include basic information on some other important ECM components, principally fibronectin, of the AT. We also briefly discuss the function of AT collagens in certain metabolic diseases in which they have been shown to play central roles.
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Affiliation(s)
- Iida Jääskeläinen
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90014 Oulu, Finland
| | - Tiina Petäistö
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90014 Oulu, Finland
| | - Elahe Mirzarazi Dahagi
- Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC H3A 0C7, Canada
| | - Mahdokht Mahmoodi
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montréal, QC H3A 0C7, Canada
| | - Taina Pihlajaniemi
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90014 Oulu, Finland
| | - Mari T Kaartinen
- Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC H3A 0C7, Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montréal, QC H3A 0C7, Canada
- Division of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, Montréal, QC H3A 0C7, Canada
| | - Ritva Heljasvaara
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90014 Oulu, Finland
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Sharma RK, Kamble SH, Krishnan S, Gomes J, To B, Li S, Liu IC, Gumz ML, Mohandas R. Involvement of lysyl oxidase in the pathogenesis of arterial stiffness in chronic kidney disease. Am J Physiol Renal Physiol 2023; 324:F364-F373. [PMID: 36825626 PMCID: PMC10069822 DOI: 10.1152/ajprenal.00239.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 02/01/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023] Open
Abstract
Patients with chronic kidney disease (CKD) are at increased risk for adverse cardiovascular events. CKD is associated with increases in arterial stiffness, whereas improvements in arterial stiffness correlate with better survival. However, arterial stiffness is increased early in CKD, suggesting that there might be additional factors, unique to kidney disease, that increase arterial stiffness. Lysyl oxidase (LOX) is a key mediator of collagen cross linking and matrix remodeling. LOX is predominantly expressed in the cardiovascular system, and its upregulation has been associated with increased tissue stiffening and extracellular matrix remodeling. Thus, this study was designed to evaluate the role of increased LOX activity in inducing aortic stiffness in CKD and whether β-aminopropionitrile (BAPN), a LOX inhibitor, could prevent aortic stiffness by reducing collagen cross linking. Eight-week-old male C57BL/6 mice were subjected to 5/6 nephrectomy (Nx) or sham surgery. Two weeks after surgery, mice were randomized to BAPN (300 mg/kg/day in water) or vehicle treatment for 4 wk. Aortic stiffness was assessed by pulse wave velocity (PWV) using Doppler ultrasound. Aortic levels of LOX were assessed by ELISA, and cross-linked total collagen levels were analyzed by mass spectrometry and Sircol assay. Nx mice showed increased PWV and aortic wall remodeling compared with control mice. Collagen cross linking was increased in parallel with the increases in total collagen in the aorta of Nx mice. In contrast, Nx mice that received BAPN treatment showed decreased cross-linked collagens and PWV compared with that received vehicle treatment. Our results indicated that LOX might be an early and key mediator of aortic stiffness in CKD.NEW & NOTEWORTHY Arterial stiffness in CKD is associated with adverse cardiovascular outcomes. However, the mechanisms underlying increased aortic stiffness in CKD are unclear. Herein, we demonstrated that 1) increased aortic stiffness in CKD is independent of hypertension and calcification and 2) LOX-mediated changes in extracellular matrix are at least in part responsible for increased aortic stiffness in CKD. Prevention of excess LOX may have therapeutic potential in alleviating increased aortic stiffness and improving cardiovascular disease in CKD.
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Affiliation(s)
- Ravindra K Sharma
- Division of Nephrology, Hypertension and Renal Transplantation, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, United States
| | - Shyam H Kamble
- Department of Pharmacology, University of Florida College of Medicine, Gainesville, Florida, United States
| | - Suraj Krishnan
- Division of Nephrology, Hypertension and Renal Transplantation, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, United States
| | - Joshua Gomes
- Division of Nephrology, Hypertension and Renal Transplantation, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, United States
| | - Brandon To
- Division of Nephrology, Hypertension and Renal Transplantation, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, United States
| | - Shiyu Li
- Division of Nephrology, Hypertension and Renal Transplantation, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, United States
| | - I-Chia Liu
- Division of Nephrology, Hypertension and Renal Transplantation, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, United States
| | - Michelle L Gumz
- Division of Nephrology, Hypertension and Renal Transplantation, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, United States
- Department of Physiology and Aging, University of Florida College of Medicine, Gainesville, Florida, United States
| | - Rajesh Mohandas
- Division of Nephrology and Hypertension, Louisiana State University Health Sciences Center School of Medicine, New Orleans, Louisiana, United States
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Effect of Anti-Hypertensive Medication on Plasma Concentrations of Lysyl Oxidase: Evidence for Aldosterone-IL-6-Dependent Regulation of Lysyl Oxidase Blood Concentration. Biomedicines 2022; 10:biomedicines10071748. [PMID: 35885053 PMCID: PMC9313098 DOI: 10.3390/biomedicines10071748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 11/30/2022] Open
Abstract
Lysyl oxidase (LOX) is a secretory protein that catalyzes elastin and collagen cross-linking. Lowering LOX expression and activity in endothelial cells is associated with a high risk of aneurysms and vascular malformation. Interleukin-6 (IL-6), elevated in hypertension, is known to suppress LOX expression. The influence of anti-hypertensive medication on the plasma LOX concentration is currently unknown. In a cohort of 34 patients diagnosed with resistant hypertension and treated with up to nine different drugs, blood concentration of LOX was analyzed to identify drugs that have an impact on plasma LOX concentration. Key findings were confirmed in a second independent patient cohort of 37 patients diagnosed with dilated cardiomyopathy. Blood concentrations of aldosterone and IL-6 were analyzed. In vitro, the effect of IL-6 on LOX expression was analyzed in endothelial cells. Patients receiving aldosterone antagonists had the highest plasma LOX concentration in both cohorts. This effect was independent of sex, age, blood pressure, body mass index, and co-medication. Blood aldosterone concentration correlates with plasma IL-6 concentration. In vitro, IL-6 decreased the expression of LOX in endothelial cells but not fibroblasts. Aldosterone was identified as a factor that affects blood concentration of LOX in an IL-6-dependent manner.
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10
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Tsang KM, Knutsen RH, Billington CJ, Lindberg E, Steenbock H, Fu YP, Wardlaw-Pickett A, Liu D, Malide D, Yu ZX, Bleck CKE, Brinckmann J, Kozel BA. Copper-Binding Domain Variation in a Novel Murine Lysyl Oxidase Model Produces Structurally Inferior Aortic Elastic Fibers Whose Failure Is Modified by Age, Sex, and Blood Pressure. Int J Mol Sci 2022; 23:6749. [PMID: 35743192 PMCID: PMC9223555 DOI: 10.3390/ijms23126749] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/08/2022] [Accepted: 06/14/2022] [Indexed: 12/23/2022] Open
Abstract
Lysyl oxidase (LOX) is a copper-binding enzyme that cross-links elastin and collagen. The dominant LOX variation contributes to familial thoracic aortic aneurysm. Previously reported murine Lox mutants had a mild phenotype and did not dilate without drug-induced provocation. Here, we present a new, more severe mutant, Loxb2b370.2Clo (c.G854T; p.Cys285Phe), whose mutation falls just N-terminal to the copper-binding domain. Unlike the other mutants, the C285F Lox protein was stably produced/secreted, and male C57Bl/6J Lox+/C285F mice exhibit increased systolic blood pressure (BP; p < 0.05) and reduced caliber aortas (p < 0.01 at 100mmHg) at 3 months that independently dilate by 6 months (p < 0.0001). Multimodal imaging reveals markedly irregular elastic sheets in the mutant (p = 2.8 × 10−8 for breaks by histology) that become increasingly disrupted with age (p < 0.05) and breeding into a high BP background (p = 6.8 × 10−4). Aortic dilation was amplified in males vs. females (p < 0.0001 at 100mmHg) and ameliorated by castration. The transcriptome of young Lox mutants showed alteration in dexamethasone (p = 9.83 × 10−30) and TGFβ-responsive genes (p = 7.42 × 10−29), and aortas from older C57Bl/6J Lox+/C285F mice showed both enhanced susceptibility to elastase (p < 0.01 by ANOVA) and increased deposition of aggrecan (p < 0.05). These findings suggest that the secreted Lox+/C285F mutants produce dysfunctional elastic fibers that show increased susceptibility to proteolytic damage. Over time, the progressive weakening of the connective tissue, modified by sex and blood pressure, leads to worsening aortic disease.
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Affiliation(s)
- Kit Man Tsang
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
| | - Russell H. Knutsen
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
| | - Charles J. Billington
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
- Department of Pediatrics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Eric Lindberg
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
| | - Heiko Steenbock
- Institute of Virology and Cell Biology, University of Lübeck, 23562 Lübeck, Germany; (H.S.); (J.B.)
| | - Yi-Ping Fu
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
| | - Amanda Wardlaw-Pickett
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
- Johns Hopkins University Applied Physics Lab, Laurel, MD 20724, USA
| | - Delong Liu
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
| | - Daniela Malide
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
| | - Zu-Xi Yu
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
| | - Christopher K. E. Bleck
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
| | - Jürgen Brinckmann
- Institute of Virology and Cell Biology, University of Lübeck, 23562 Lübeck, Germany; (H.S.); (J.B.)
- Department of Dermatology, University of Lübeck, 23562 Lübeck, Germany
| | - Beth A. Kozel
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (K.M.T.); (R.H.K.); (C.J.B.J.); (E.L.); (Y.-P.F.); (A.W.-P.); (D.L.); (D.M.); (Z.-X.Y.); (C.K.E.B.)
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11
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Sun C, Ma S, Chen Y, Kim NH, Kailas S, Wang Y, Gu W, Chen Y, Tuason JPW, Bhan C, Manem N, Huang Y, Cheng C, Zhou Z, Zhou Q, Zhu Y. Diagnostic Value, Prognostic Value, and Immune Infiltration of LOX Family Members in Liver Cancer: Bioinformatic Analysis. Front Oncol 2022; 12:843880. [PMID: 35311155 PMCID: PMC8931681 DOI: 10.3389/fonc.2022.843880] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 02/08/2022] [Indexed: 12/13/2022] Open
Abstract
Background Liver cancer (LC) is well known for its prevalence as well as its poor prognosis. The aberrant expression of lysyl oxidase (LOX) family is associated with liver cancer, but their function and prognostic value in LC remain largely unclear. This study aimed to explore the function and prognostic value of LOX family in LC through bioinformatics analysis and meta-analysis. Results The expression levels of all LOX family members were significantly increased in LC. Area under the receiver operating characteristic curve (AUC) of LOXL2 was 0.946 with positive predictive value (PPV) of 0.994. LOX and LOXL3 were correlated with worse prognosis. Meta-analysis also validated effect of LOX on prognosis. Nomogram of these two genes and other predictors was also plotted. There was insufficient data from original studies to conduct meta-analysis on LOXL3. The functions of LOX family members in LC were mostly involved in extracellular and functions and structures. The expressions of LOX family members strongly correlated with various immune infiltrating cells and immunomodulators in LC. Conclusions For LC patients, LOXL2 may be a potential diagnostic biomarker, while LOX and LOXL3 have potential prognostic and therapeutic values. Positive correlation between LOX family and infiltration of various immune cells and immunomodulators suggests the need for exploration of their roles in the tumor microenvironment and for potential immunotherapeutic to target LOX family proteins.
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Affiliation(s)
- Chenyu Sun
- AMITA Health Saint Joseph Hospital Chicago, Chicago, IL, United States
| | - Shaodi Ma
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, China
| | - Yue Chen
- Department of Clinical Medicine, School of the First Clinical Medicine, Anhui Medical University, Hefei, China
| | - Na Hyun Kim
- AMITA Health Saint Joseph Hospital Chicago, Chicago, IL, United States
| | - Sujatha Kailas
- Gastroenterology, AMITA Health Saint Joseph Hospital Chicago, Chicago, IL, United States
| | - Yichen Wang
- Mercy Internal Medicine Service, Trinity Health of New England, Springfield, MA, United States
| | - Wenchao Gu
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yisheng Chen
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | | | - Chandur Bhan
- AMITA Health Saint Joseph Hospital Chicago, Chicago, IL, United States
| | - Nikitha Manem
- AMITA Health Saint Joseph Hospital Chicago, Chicago, IL, United States
| | - Yuting Huang
- University of Maryland Medical Center Midtown Campus, Baltimore, MD, United States
| | - Ce Cheng
- College of Medicine, The University of Arizona, Tucson, AZ, United States
- Banner-University Medical Center South, Tucson, AZ, United States
| | - Zhen Zhou
- Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
| | - Qin Zhou
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, United States
| | - Yanzhe Zhu
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
- *Correspondence: Yanzhe Zhu,
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12
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Dosunmu-Ogunbi A, Yuan S, Shiwarski DJ, Tashman JW, Reynolds M, Feinberg A, Novelli EM, Shiva S, Straub AC. Endothelial superoxide dismutase 2 is decreased in sickle cell disease and regulates fibronectin processing. FUNCTION (OXFORD, ENGLAND) 2022; 3:zqac005. [PMID: 35274104 PMCID: PMC8900267 DOI: 10.1093/function/zqac005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 02/05/2022] [Accepted: 02/10/2022] [Indexed: 01/07/2023]
Abstract
Sickle cell disease (SCD) is a genetic red blood cell disorder characterized by increased reactive oxygen species (ROS) and a concordant reduction in antioxidant capacity in the endothelium. Superoxide dismutase 2 (SOD2) is a mitochondrial-localized enzyme that catalyzes the dismutation of superoxide to hydrogen peroxide. Decreased peripheral blood expression of SOD2 is correlated with increased hemolysis and cardiomyopathy in SCD. Here, we report for the first time that endothelial cells exhibit reduced SOD2 protein expression in the pulmonary endothelium of SCD patients. To investigate the impact of decreased SOD2 expression in the endothelium, SOD2 was knocked down in human pulmonary microvascular endothelial cells (hPMVECs). We found that SOD2 deficiency in hPMVECs results in endothelial cell dysfunction, including reduced cellular adhesion, diminished migration, integrin protein dysregulation, and disruption of permeability. Furthermore, we uncover that SOD2 mediates changes in endothelial cell function via processing of fibronectin through its inability to facilitate dimerization. These results demonstrate that endothelial cells are deficient in SOD2 expression in SCD patients and suggest a novel pathway for SOD2 in regulating fibronectin processing.
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Affiliation(s)
- Atinuke Dosunmu-Ogunbi
- Medical Scientist Training Program, University of Pittsburgh School of Medicine, 15261, Pittsburgh, PA, USA,Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, 15261, Pittsburgh, PA, USA,Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, 15261, Pittsburgh, PA, USA
| | - Shuai Yuan
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, 15261, Pittsburgh, PA, USA
| | - Daniel J Shiwarski
- Department of Biomedical Engineering, Carnegie Mellon University, 15261, Pittsburgh, PA, USA
| | - Joshua W Tashman
- Medical Scientist Training Program, University of Pittsburgh School of Medicine, 15261, Pittsburgh, PA, USA,Department of Biomedical Engineering, Carnegie Mellon University, 15261, Pittsburgh, PA, USA
| | - Michael Reynolds
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, 15261, Pittsburgh, PA, USA
| | - Adam Feinberg
- Department of Biomedical Engineering, Carnegie Mellon University, 15261, Pittsburgh, PA, USA,Department of Materials Science and Engineering, Carnegie Mellon University, 15261, Pittsburgh, PA, USA
| | - Enrico M Novelli
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, 15261, Pittsburgh, PA, USA,Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, 15261, Pittsburgh, PA, USA
| | - Sruti Shiva
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, 15261, Pittsburgh, PA, USA,Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, 15261, Pittsburgh, PA, USA
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13
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Chute M, Aujla PK, Li Y, Jana S, Zhabyeyev P, Rasmuson J, Owen CA, Abraham T, Oudit GY, Kassiri Z. ADAM15 is required for optimal collagen cross-linking and scar formation following myocardial infarction. Matrix Biol 2022; 105:127-143. [PMID: 34995785 DOI: 10.1016/j.matbio.2021.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 12/13/2021] [Accepted: 12/30/2021] [Indexed: 01/07/2023]
Abstract
Collagen cross-linking is an important step in optimal scar formation. Myocardial infarction (MI) results in loss of cardiomyocytes that are replaced with a scar (infarct) tissue. Disintegrin and metalloproteinases (ADAMs) are membrane-bound proteases that can interact with molecules intra- and extra-cellularly to mediate various cellular functions. ADAM15 is expressed in the myocardium, however its function in heart disease has been poorly explored. We utilized mice lacking ADAM15 (Adam15-/-) and wildtype (WT) mice. MI, induced by ligation of the left anterior descending artery, resulted in a transient but significant rise in ADAM15 protein in the WT myocardium at 3-days. Following MI, Adam15-/- mice exhibited markedly higher rate of left ventricular (LV) rupture compared to WT mice (66% vs. 15%, p<0.05). Echocardiography and strain analyses showed worsened LV dysfunction in Adam15-/- mice at 3days, prior to the onset of LV rupture. Second harmonic generation imaging revealed significant disarray and reduction in fibrillar collagen density in Adam15-/- compared to WT hearts. This was associated with lower insoluble and higher soluble collagen fractions, reduced cross-linking enzyme, lysyl oxidase-1 (LOX-1), and fibronectin which is required for LOX-1 function, in Adam15-/--MI hearts. Post-MI myocardial inflammation was comparable between the genotypes. In vitro, primary adult cardiac fibroblasts from Adam15-/- mice showed suppressed activation in response to ischemia (hypoxia+nutrient depletion) compared to WT fibroblasts. Adam15-deficiency was associated with reduced PAK1(p21-activated kinase-1) levels, a regulator of fibronectin and LOX-1 expression. In female mice, the rate of post-MI LV rupture, PAK1 signaling, LOX-1 and fibronectin protein levels were comparable between Adam15-/- and WT, indicating lack of sex-dependent effects of ADAM15 post- MI. This study reports a novel function for ADAM15 in collagen cross-linking and optimal scar formation post-MI which may also apply to scar formation in other tissues.
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Affiliation(s)
- Michael Chute
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Cardiovascular Research Center, Mazankowski Alberta Heart Institute, Edmonton, AB, Canada
| | - Preetinder K Aujla
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Cardiovascular Research Center, Mazankowski Alberta Heart Institute, Edmonton, AB, Canada
| | - Yingxi Li
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Cardiovascular Research Center, Mazankowski Alberta Heart Institute, Edmonton, AB, Canada
| | - Sayantan Jana
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Cardiovascular Research Center, Mazankowski Alberta Heart Institute, Edmonton, AB, Canada
| | - Pavel Zhabyeyev
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Cardiovascular Research Center, Mazankowski Alberta Heart Institute, Edmonton, AB, Canada
| | - Jaslyn Rasmuson
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Cardiovascular Research Center, Mazankowski Alberta Heart Institute, Edmonton, AB, Canada
| | - Caroline A Owen
- Brigham and Women's Hospital/Harvard Medical School, Boston, MA, USA, Penn State College of Medicine, Hershey, PA, USA
| | | | - Gavin Y Oudit
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Cardiovascular Research Center, Mazankowski Alberta Heart Institute, Edmonton, AB, Canada
| | - Zamaneh Kassiri
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada; Cardiovascular Research Center, Mazankowski Alberta Heart Institute, Edmonton, AB, Canada.
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14
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Hypoxia induces stress fiber formation in adipocytes in the early stage of obesity. Sci Rep 2021; 11:21473. [PMID: 34728615 PMCID: PMC8563745 DOI: 10.1038/s41598-021-00335-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 10/07/2021] [Indexed: 02/07/2023] Open
Abstract
In obese adipose tissue (AT), hypertrophic expansion of adipocytes is not matched by new vessel formation, leading to AT hypoxia. As a result, hypoxia inducible factor-1⍺ (HIF-1⍺) accumulates in adipocytes inducing a transcriptional program that upregulates profibrotic genes and biosynthetic enzymes such as lysyl oxidase (LOX) synthesis. This excess synthesis and crosslinking of extracellular matrix (ECM) components cause AT fibrosis. Although fibrosis is a hallmark of obese AT, the role of fibroblasts, cells known to regulate fibrosis in other fibrosis-prone tissues, is not well studied. Here we have developed an in vitro model of AT to study adipocyte-fibroblast crosstalk in a hypoxic environment. Further, this in vitro model was used to investigate the effect of hypoxia on adipocyte mechanical properties via ras homolog gene family member A (RhoA)/Rho-associated coiled-coil kinases (ROCK) signaling pathways. We confirmed that hypoxia creates a diseased phenotype by inhibiting adipocyte maturation and inducing actin stress fiber formation facilitated by myocardin-related transcription factor A (MRTF-A/MKL1) nuclear translocation. This work presents new potential therapeutic targets for obesity by improving adipocyte maturation and limiting mechanical stress in obese AT.
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15
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Dalton CJ, Lemmon CA. Fibronectin: Molecular Structure, Fibrillar Structure and Mechanochemical Signaling. Cells 2021; 10:2443. [PMID: 34572092 PMCID: PMC8471655 DOI: 10.3390/cells10092443] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 12/12/2022] Open
Abstract
The extracellular matrix (ECM) plays a key role as both structural scaffold and regulator of cell signal transduction in tissues. In times of ECM assembly and turnover, cells upregulate assembly of the ECM protein, fibronectin (FN). FN is assembled by cells into viscoelastic fibrils that can bind upward of 40 distinct growth factors and cytokines. These fibrils play a key role in assembling a provisional ECM during embryonic development and wound healing. Fibril assembly is also often upregulated during disease states, including cancer and fibrotic diseases. FN fibrils have unique mechanical properties, which allow them to alter mechanotransduction signals sensed and relayed by cells. Binding of soluble growth factors to FN fibrils alters signal transduction from these proteins, while binding of other ECM proteins, including collagens, elastins, and proteoglycans, to FN fibrils facilitates the maturation and tissue specificity of the ECM. In this review, we will discuss the assembly of FN fibrils from individual FN molecules; the composition, structure, and mechanics of FN fibrils; the interaction of FN fibrils with other ECM proteins and growth factors; the role of FN in transmitting mechanobiology signaling events; and approaches for studying the mechanics of FN fibrils.
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Affiliation(s)
| | - Christopher A. Lemmon
- Department of Biomedical Engineering, Virginia Commonwealth University, 401 W. Main St., Richmond, VA 23284, USA;
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16
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Pehrsson M, Mortensen JH, Manon-Jensen T, Bay-Jensen AC, Karsdal MA, Davies MJ. Enzymatic cross-linking of collagens in organ fibrosis - resolution and assessment. Expert Rev Mol Diagn 2021; 21:1049-1064. [PMID: 34330194 DOI: 10.1080/14737159.2021.1962711] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction: Enzymatic cross-linking of the collagens within the extracellular matrix (ECM) catalyzed by enzymes such as lysyl oxidase (LOX) and lysyl oxidase like-enzymes 1-4 (LOXL), transglutaminase 2 (TG2), and peroxidasin (PXDN) contribute to fibrosis progression through extensive collagen cross-linking. Studies in recent years have begun elucidating the important role of collagen cross-linking in perpetuating progression of organ fibrosis independently of inflammation through an increasingly stiff and noncompliant ECM. Therefore, collagen cross-linking and the cross-linking enzymes have become new targets in anti-fibrotic therapy as well as targets of novel biomarkers to properly assess resolution of the fibrotic ECM.Areas covered: The enzymatic actions of enzymes catalyzing collagen cross-linking and their relevance in organ fibrosis. Potential biomarkers specifically quantifying proteolytic fragments of collagen cross-linking is discussed based on Pubmed search done in November 2020 as well as the authors knowledge.Expert opinion: Current methods for the assessment of fibrosis involve the use of invasive and/or cumbersome and expensive methods such as tissue biopsies. Thus, an unmet need exists for the development and validation of minimally invasive biomarkers of proteolytic fragments of cross-linked collagens. These biomarkers may aid in the development and proper assessment of fibrosis resolution in coming years.
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Affiliation(s)
- Martin Pehrsson
- Department of Biomedical Science, University of Copenhagen, Copenhagen, Denmark.,Biomarkers & Research, Nordic Bioscience A/S, Herlev, Denmark
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17
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Kalita B, Coumar MS. Deciphering molecular mechanisms of metastasis: novel insights into targets and therapeutics. Cell Oncol (Dordr) 2021; 44:751-775. [PMID: 33914273 DOI: 10.1007/s13402-021-00611-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 04/19/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The transition of a primary tumour to metastatic progression is driven by dynamic molecular changes, including genetic and epigenetic alterations. The metastatic cascade involves bidirectional interactions among extracellular and intracellular components leading to disintegration of cellular junctions, cytoskeleton reorganization and epithelial to mesenchymal transition. These events promote metastasis by reprogramming the primary cancer cell's molecular framework, enabling them to cause local invasion, anchorage-independent survival, cell death and immune resistance, extravasation and colonization of distant organs. Metastasis follows a site-specific pattern that is still poorly understood at the molecular level. Although various drugs have been tested clinically across different metastatic cancer types, it has remained difficult to develop efficacious therapeutics due to complex molecular layers involved in metastasis as well as experimental limitations. CONCLUSIONS In this review, a systemic evaluation of the molecular mechanisms of metastasis is outlined and the potential molecular components and their status as therapeutic targets and the associated pre-clinical and clinical agents available or under investigations are discussed. Integrative methods like pan-cancer data analysis, which can provide clinical insights into both targets and treatment decisions and help in the identification of crucial components driving metastasis such as mutational profiles, gene signatures, associated pathways, site specificities and disease-gene phenotypes, are discussed. A multi-level data integration of the metastasis signatures across multiple primary and metastatic cancer types may facilitate the development of precision medicine and open up new opportunities for future therapies.
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Affiliation(s)
- Bikashita Kalita
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Kalapet, Pondicherry, 605014, India
| | - Mohane Selvaraj Coumar
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Kalapet, Pondicherry, 605014, India.
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18
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Spada S, Tocci A, Di Modugno F, Nisticò P. Fibronectin as a multiregulatory molecule crucial in tumor matrisome: from structural and functional features to clinical practice in oncology. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2021; 40:102. [PMID: 33731188 PMCID: PMC7972229 DOI: 10.1186/s13046-021-01908-8] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/09/2021] [Indexed: 12/11/2022]
Abstract
Deciphering extracellular matrix (ECM) composition and architecture may represent a novel approach to identify diagnostic and therapeutic targets in cancer. Among the ECM components, fibronectin and its fibrillary assembly represent the scaffold to build up the entire ECM structure, deeply affecting its features. Herein we focus on this extraordinary protein starting from its complex structure and defining its role in cancer as prognostic and theranostic marker.
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Affiliation(s)
- Sheila Spada
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY, USA
| | - Annalisa Tocci
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, Rome, Italy
| | - Francesca Di Modugno
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, Rome, Italy.
| | - Paola Nisticò
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, Rome, Italy.
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19
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Sharma M, Turaga RC, Yuan Y, Satyanarayana G, Mishra F, Bian Z, Liu W, Sun L, Yang J, Liu ZR. Simultaneously targeting cancer-associated fibroblasts and angiogenic vessel as a treatment for TNBC. J Exp Med 2021; 218:211769. [PMID: 33561195 PMCID: PMC7876552 DOI: 10.1084/jem.20200712] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 10/07/2020] [Accepted: 11/24/2020] [Indexed: 12/20/2022] Open
Abstract
Fibrotic tumor stroma plays an important role in facilitating triple-negative breast cancer (TNBC) progression and chemotherapeutic resistance. We previously reported a rationally designed protein (ProAgio) that targets integrin αvβ3 at a novel site. ProAgio induces apoptosis via the integrin. Cancer-associated fibroblasts (CAFs) and angiogenic endothelial cells (aECs) in TNBC tumor express high levels of integrin αvβ3. ProAgio effectively induces apoptosis in CAFs and aECs. The depletion of CAFs by ProAgio reduces intratumoral collagen and decreases growth factors released from CAFs in the tumor, resulting in decreased cancer cell proliferation and apoptotic resistance. ProAgio also eliminates leaky tumor angiogenic vessels, which consequently reduces tumor hypoxia and improves drug delivery. The depletion of CAFs and reduction in hypoxia by ProAgio decreases lysyl oxidase (LOX) secretion, which may play a role in the reduction of metastasis. ProAgio stand-alone or in combination with a chemotherapeutic agent provides survival benefit in TNBC murine models, highlighting the therapeutic potential of ProAgio as a treatment strategy.
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Affiliation(s)
- Malvika Sharma
- Department of Biology, Georgia State University, Atlanta, GA
| | | | - Yi Yuan
- Department of Biology, Georgia State University, Atlanta, GA
| | | | - Falguni Mishra
- Department of Biology, Georgia State University, Atlanta, GA
| | - Zhen Bian
- Department of Biology, Georgia State University, Atlanta, GA
| | - Wei Liu
- Department of Biology, Georgia State University, Atlanta, GA.,Harbin Medical University Cancer Hospital, Harbin, People's Republic of China
| | - Li Sun
- Amoytop Biotech Inc., Xiamen, People's Republic of China
| | - Jenny Yang
- Department of Chemistry, Georgia State University, Atlanta, GA
| | - Zhi-Ren Liu
- Department of Biology, Georgia State University, Atlanta, GA
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20
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Wang H, Pan J, Barsky L, Jacob JC, Zheng Y, Gao C, Wang S, Zhu W, Sun H, Lu L, Jia H, Zhao Y, Bruns C, Vago R, Dong Q, Qin L. Characteristics of pre-metastatic niche: the landscape of molecular and cellular pathways. MOLECULAR BIOMEDICINE 2021; 2:3. [PMID: 35006432 PMCID: PMC8607426 DOI: 10.1186/s43556-020-00022-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/30/2020] [Indexed: 02/08/2023] Open
Abstract
Metastasis is a major contributor to cancer-associated deaths. It involves complex interactions between primary tumorigenic sites and future metastatic sites. Accumulation studies have revealed that tumour metastasis is not a disorderly spontaneous incident but the climax of a series of sequential and dynamic events including the development of a pre-metastatic niche (PMN) suitable for a subpopulation of tumour cells to colonize and develop into metastases. A deep understanding of the formation, characteristics and function of the PMN is required for developing new therapeutic strategies to treat tumour patients. It is rapidly becoming evident that therapies targeting PMN may be successful in averting tumour metastasis at an early stage. This review highlights the key components and main characteristics of the PMN and describes potential therapeutic strategies, providing a promising foundation for future studies.
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Affiliation(s)
- Hao Wang
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Junjie Pan
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Livnat Barsky
- Avram and Stella Goldstein-Goren, Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | | | - Yan Zheng
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Chao Gao
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Shun Wang
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Wenwei Zhu
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Haoting Sun
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Lu Lu
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Huliang Jia
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China
| | - Yue Zhao
- Department of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany
| | - Christiane Bruns
- Department of General, Visceral, Cancer and Transplantation Surgery, University Hospital of Cologne, Cologne, Germany
| | - Razi Vago
- Avram and Stella Goldstein-Goren, Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
| | - Qiongzhu Dong
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China.
| | - Lunxiu Qin
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences, Fudan University, 12 Urumqi Road (M), Shanghai, 200040, China.
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21
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Wirth F, Lubosch A, Hamelmann S, Nakchbandi IA. Fibronectin and Its Receptors in Hematopoiesis. Cells 2020; 9:cells9122717. [PMID: 33353083 PMCID: PMC7765895 DOI: 10.3390/cells9122717] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/08/2020] [Accepted: 12/15/2020] [Indexed: 02/07/2023] Open
Abstract
Fibronectin is a ubiquitous extracellular matrix protein that is produced by many cell types in the bone marrow and distributed throughout it. Cells of the stem cell niche produce the various isoforms of this protein. Fibronectin not only provides the cells a scaffold to bind to, but it also modulates their behavior by binding to receptors on the adjacent hematopoietic stem cells and stromal cells. These receptors, which include integrins such as α4β1, α9β1, α4β7, α5β1, αvβ3, Toll-like receptor-4 (TLR-4), and CD44, are found on the hematopoietic stem cell. Because the knockout of fibronectin is lethal during embryonal development and because fibronectin is produced by almost all cell types in mammals, the study of its role in hematopoiesis is difficult. Nevertheless, strong and direct evidence exists for its stimulation of myelopoiesis and thrombopoiesis using in vivo models. Other reviewed effects can be deduced from the study of fibronectin receptors, which showed their activation modifies the behavior of hematopoietic stem cells. Erythropoiesis was only stimulated under hemolytic stress, and mostly late stages of lymphocytic differentiation were modulated. Because fibronectin is ubiquitously expressed, these interactions in health and disease need to be taken into account whenever any molecule is evaluated in hematopoiesis.
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Affiliation(s)
- Franziska Wirth
- Institute of Immunology, University of Heidelberg, 69120 Heidelberg, Germany; (F.W.); (A.L.); (S.H.)
| | - Alexander Lubosch
- Institute of Immunology, University of Heidelberg, 69120 Heidelberg, Germany; (F.W.); (A.L.); (S.H.)
| | - Stefan Hamelmann
- Institute of Immunology, University of Heidelberg, 69120 Heidelberg, Germany; (F.W.); (A.L.); (S.H.)
| | - Inaam A. Nakchbandi
- Institute of Immunology, University of Heidelberg, 69120 Heidelberg, Germany; (F.W.); (A.L.); (S.H.)
- Max-Planck Institute for Medical Research, 69120 Heidelberg, Germany
- Correspondence: ; Tel.: +49-622-156-8744
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22
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Al-U'datt D, Allen BG, Nattel S. Role of the lysyl oxidase enzyme family in cardiac function and disease. Cardiovasc Res 2020; 115:1820-1837. [PMID: 31504232 DOI: 10.1093/cvr/cvz176] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 04/23/2019] [Accepted: 08/14/2019] [Indexed: 12/18/2022] Open
Abstract
Heart diseases are a major cause of morbidity and mortality world-wide. Lysyl oxidase (LOX) and related LOX-like (LOXL) isoforms play a vital role in remodelling the extracellular matrix (ECM). The LOX family controls ECM formation by cross-linking collagen and elastin chains. LOX/LOXL proteins are copper-dependent amine oxidases that catalyse the oxidation of lysine, causing cross-linking between the lysine moieties of lysine-rich proteins. Dynamic changes in LOX and LOXL protein-expression occur in a variety of cardiac pathologies; these changes are believed to be central to the associated tissue-fibrosis. An awareness of the potential pathophysiological importance of LOX has led to the evaluation of interventions that target LOX/LOXL proteins for heart-disease therapy. The purposes of this review article are: (i) to summarize the basic biochemistry and enzyme function of LOX and LOXL proteins; (ii) to consider their tissue and species distribution; and (iii) to review the results of experimental studies of the roles of LOX and LOXL proteins in heart disease, addressing involvement in the mechanisms, pathophysiology and therapeutic responses based on observations in patient samples and relevant animal models. Therapeutic targeting of LOX family enzymes has shown promising results in animal models, but small-molecule approaches have been limited by non-specificity and off-target effects. Biological approaches show potential promise but are in their infancy. While there is strong evidence for LOX-family protein participation in heart failure, myocardial infarction, cardiac hypertrophy, dilated cardiomyopathy, atrial fibrillation and hypertension, as well as potential interest as therapeutic targets, the precise involvement of LOX-family proteins in heart disease requires further investigation.
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Affiliation(s)
- Doa'a Al-U'datt
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, Quebec, Canada.,Montreal Heart Institute, Montreal, Quebec, Canada
| | - Bruce G Allen
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, Quebec, Canada.,Montreal Heart Institute, Montreal, Quebec, Canada.,Department of Medicine, Université de Montreal, Montreal, Quebec, Canada.,Department of Biochemistry and Molecular Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Stanley Nattel
- Department of Pharmacology and Physiology, Université de Montréal, Montreal, Quebec, Canada.,Montreal Heart Institute, Montreal, Quebec, Canada.,Department of Medicine, Université de Montreal, Montreal, Quebec, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
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23
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Selectively-Packaged Proteins in Breast Cancer Extracellular Vesicles Involved in Metastasis. Int J Mol Sci 2020; 21:ijms21144990. [PMID: 32679759 PMCID: PMC7403963 DOI: 10.3390/ijms21144990] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/08/2020] [Accepted: 07/13/2020] [Indexed: 01/02/2023] Open
Abstract
Cancer-derived extracellular vesicles are known to play a role in the progression of the disease. In this rapidly-growing field, there are many reports of phenotypic changes in cells following exposure to cancer-derived extracellular vesicles. This study examines the protein contents of vesicles derived from three well-known breast cancer cell lines, MCF-7, MDA-MB-231 and T47D, using peptide-centric LC-MS/MS and cytokine multiplex immunoassay analysis to understand the molecular basis of these changes. Through these techniques a large number of proteins within these vesicles were identified. A large proportion of these proteins are known to be important in cancer formation and progression and associated with cancer signaling, angiogenesis, metastasis and invasion and immune regulation. This highlights the importance of extracellular vesicles (EVs) in cancer communications and shows some of the mechanisms the vesicles use to assist in cancer progression.
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24
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Umana-Diaz C, Pichol-Thievend C, Marchand MF, Atlas Y, Salza R, Malbouyres M, Barret A, Teillon J, Ardidie-Robouant C, Ruggiero F, Monnot C, Girard P, Guilluy C, Ricard-Blum S, Germain S, Muller L. Scavenger Receptor Cysteine-Rich domains of Lysyl Oxidase-Like2 regulate endothelial ECM and angiogenesis through non-catalytic scaffolding mechanisms. Matrix Biol 2020; 88:33-52. [DOI: 10.1016/j.matbio.2019.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/08/2019] [Accepted: 11/12/2019] [Indexed: 12/12/2022]
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25
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Wei S, Gao L, Wu C, Qin F, Yuan J. Role of the lysyl oxidase family in organ development (Review). Exp Ther Med 2020; 20:163-172. [PMID: 32536990 PMCID: PMC7282176 DOI: 10.3892/etm.2020.8731] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 03/02/2020] [Indexed: 02/05/2023] Open
Abstract
Lysyl oxidase proteins (LOXs) are amine oxidases, which are mainly located in smooth muscle cells and fibroblasts and serve an important role in the formation of the extracellular matrix (ECM) in a copper-dependent manner. Owing to the ability of LOX proteins to modulate crosslinking between collagens and to promote the deposition of other fibers, they serve crucially in organogenesis and the subsequent organ development, as well as disease initiation and progression. In addition, ECM formation significantly influences organ morphological formation in both cancer- and non-tumor-related diseases, in addition to cellular epigenetic transformation and migration, under the influence of LOXs. A number of different signaling pathways regulate the LOXs expression and their enzymatic activation. The tissue remodeling and transformation process shares some resemblance between oncogenesis and embryogenesis. Additionally the roles that LOXs serve appeared to be stressed during oncogenesis and tumor metastasis. It has also been indicated LOXs have a noteworthy role in non-tumor diseases. Nonetheless, the role of LOXs in systemic or local organ development and disease control remains unknown. In the present study, the essential roles that LOXs play in embryogenesis were unveiled partially, whereas the role of LOXs in organ or systematic development requires further investigations. The present review aimed to discuss the roles of members of the LOX family in the context of the remodeling of organogenesis and organ development. In addition, the consequences of the malfunction of these proteins related to the development of abnormalities and resulting diseases is discussed.
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Affiliation(s)
- Shanzun Wei
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China.,Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Liang Gao
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China.,Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Changjing Wu
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Feng Qin
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jiuhong Yuan
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China.,Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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26
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Kumar A, Deep G. Hypoxia in tumor microenvironment regulates exosome biogenesis: Molecular mechanisms and translational opportunities. Cancer Lett 2020; 479:23-30. [PMID: 32201202 DOI: 10.1016/j.canlet.2020.03.017] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/14/2020] [Accepted: 03/17/2020] [Indexed: 12/20/2022]
Abstract
Hypoxia is a key feature of solid tumors, associated with disease aggressiveness and poor outcome. Besides undergoing broad intracellular molecular and metabolic adaptations, hypoxic tumor cells extensively communicate with their microenvironment to concoct conditions favorable for their survival, growth and metastatic spread. This mode of communication is through diverse secretory factors including exosomes (extracellular vesicles of endosomal origin and ~30-150 nm in diameter) which could carry package of molecular information including proteins, nucleic acids, lipids, and metabolites wrapped in lipid bilayer. Numerous studies have concluded that hypoxia promotes exosomes secretion by cancer cells. Moreover, exosomal cargo is considerably altered under hypoxia, dictating tumor cells communication with its local and distant microenvironment. In this review, we have summarized the effects of hypoxia on exosomes (ExoHypoxic) secretion and cargo sorting (miRNAs, proteins, lipids and metabolites) as well as their biological effects in local and distant microenvironment. We have described the key molecular mechanisms (e.g. HIF-1α, ceramides, RAB GTPases, tetraspanins, oxidative stress etc) involved in the production of ExoHypoxic. Lastly, we have highlighted the potential usefulness of ExoHypoxic in cancer prognosis as well as therapeutic opportunities in targeting ExoHypoxic.
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Affiliation(s)
- Ashish Kumar
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Winston-Salem, NC, USA
| | - Gagan Deep
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Winston-Salem, NC, USA; Wake Forest Baptist Comprehensive Cancer Center, Winston-Salem, NC, USA; Department of Urology, Wake Forest School of Medicine, Winston-Salem, NC, USA.
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27
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Filla MS, Faralli JA, Desikan H, Peotter JL, Wannow AC, Peters DM. Activation of αvβ3 Integrin Alters Fibronectin Fibril Formation in Human Trabecular Meshwork Cells in a ROCK-Independent Manner. Invest Ophthalmol Vis Sci 2020; 60:3897-3913. [PMID: 31529121 PMCID: PMC6750892 DOI: 10.1167/iovs.19-27171] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Purpose Fibronectin fibrillogenesis is an integrin-mediated process that may contribute to the pathogenesis of primary open-angle glaucoma (POAG). Here, we examined the effects of αvβ3 integrins on fibrillogenesis in immortalized TM-1 cells and human trabecular meshwork (HTM) cells. Methods TM-1 cells overexpressing wild-type β3 (WTβ3) or constitutively active β3 (CAβ3) integrin subunits were generated. Control cells were transduced with an empty vector (EV). Deoxycholic acid (DOC) extraction of monolayers, immunofluorescence microscopy, and On-cell western analyses were used to determine levels of fibronectin fibrillogenesis and fibronectin fibril composition (EDA+ and EDB+ fibronectins) and conformation. αvβ3 and α5β1 Integrin levels were determined using fluorescence-activated cell sorting (FACS). Cilengitide and an adenovirus vector expressing WTβ3 or CAβ3 integrin subunits were used to examine the role of αvβ3 integrin in HTM cells. The role of the canonical α5β1 integrin–mediated pathway in fibrillogenesis was determined using the fibronectin-binding peptide FUD, the β1 integrin function-blocking antibody 13, and the Rho kinase (ROCK) inhibitor Y27632. Results Activation of αvβ3 integrin enhanced the assembly of fibronectin into DOC-insoluble fibrils in both TM-1 and HTM cells. The formation of fibronectin fibrils was dependent on α5β1 integrin and could be inhibited by FUD. However, fibrillogenesis was unaffected by Y27632. Fibrils assembled by CAβ3 cells also contained high levels of EDA+ and EDB+ fibronectin and fibronectin that was stretched. Conclusions αvβ3 Integrin signaling altered the deposition and structure of fibronectin fibrils using a β1 integrin/ROCK-independent mechanism. Thus, αvβ3 integrins could play a significant role in altering the function of fibronectin matrices in POAG.
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Affiliation(s)
- Mark S Filla
- Departments of Pathology & Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Jennifer A Faralli
- Departments of Pathology & Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Harini Desikan
- Departments of Pathology & Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Jennifer L Peotter
- Departments of Pathology & Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Abigail C Wannow
- Departments of Pathology & Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States
| | - Donna M Peters
- Departments of Pathology & Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States.,Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin, United States
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28
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Canelón SP, Wallace JM. Substrate Strain Mitigates Effects of β-Aminopropionitrile-Induced Reduction in Enzymatic Crosslinking. Calcif Tissue Int 2019; 105:660-669. [PMID: 31482192 PMCID: PMC7161703 DOI: 10.1007/s00223-019-00603-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 08/21/2019] [Indexed: 01/22/2023]
Abstract
Enzymatic crosslinks stabilize type I collagen and are catalyzed by lysyl oxidase (LOX), a step interrupted through β-aminopropionitrile (BAPN) exposure. This study evaluated dose-dependent effects of BAPN on osteoblast gene expression of type I collagen, LOX, and genes associated with crosslink formation. The second objective was to characterize collagen produced in vitro after exposure to BAPN, and to explore changes to collagen properties under continuous cyclical substrate strain. To evaluate dose-dependent effects, osteoblasts were exposed to a range of BAPN dosages (0-10 mM) for gene expression analysis and cell proliferation. Results showed significant upregulation of BMP-1, POST, and COL1A1 and change in cell proliferation. Results also showed that while the gene encoding LOX was unaffected by BAPN treatment, other genes related to LOX activation and matrix production were upregulated. For the loading study, the combined effects of BAPN and mechanical loading were assessed. Gene expression was quantified, atomic force microscopy was used to extract elastic properties of the collagen matrix, and Fourier Transform infrared spectroscopy was used to assess collagen secondary structure for enzymatic crosslinking analysis. BAPN upregulated BMP-1 in static samples and BAPN combined with mechanical loading downregulated LOX when compared to control-static samples. Results showed a higher indentation modulus in BAPN-loaded samples compared to control-loaded samples. Loading increased the mature-to-immature crosslink ratios in control samples, and BAPN increased the height ratio in static samples. In summary, effects of BAPN (upregulation of genes involved in crosslinking, mature/immature crosslinking ratios, upward trend in collagen elasticity) were mitigated by mechanical loading.
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Affiliation(s)
- Silvia P Canelón
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
| | - Joseph M Wallace
- Department of Biomedical Engineering, Indiana University-Purdue University at Indianapolis, Indianapolis, IN, USA.
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA.
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29
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Targeting the lysyl oxidases in tumour desmoplasia. Biochem Soc Trans 2019; 47:1661-1678. [DOI: 10.1042/bst20190098] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 02/08/2023]
Abstract
The extracellular matrix (ECM) is a fundamental component of tissue microenvironments and its dysregulation has been implicated in a number of diseases, in particular cancer. Tumour desmoplasia (fibrosis) accompanies the progression of many solid cancers, and is also often induced as a result of many frontline chemotherapies. This has recently led to an increased interest in targeting the underlying processes. The major structural components of the ECM contributing to desmoplasia are the fibrillar collagens, whose key assembly mechanism is the enzymatic stabilisation of procollagen monomers by the lysyl oxidases. The lysyl oxidase family of copper-dependent amine oxidase enzymes are required for covalent cross-linking of collagen (as well as elastin) molecules into the mature ECM. This key step in the assembly of collagens is of particular interest in the cancer field since it is essential to the tumour desmoplastic response. LOX family members are dysregulated in many cancers and consequently the development of small molecule inhibitors targeting their enzymatic activity has been initiated by many groups. Development of specific small molecule inhibitors however has been hindered by the lack of crystal structures of the active sites, and therefore alternate indirect approaches to target LOX have also been explored. In this review, we introduce the importance of, and assembly steps of the ECM in the tumour desmoplastic response focussing on the role of the lysyl oxidases. We also discuss recent progress in targeting this family of enzymes as a potential therapeutic approach.
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30
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Rodríguez C, Martínez-González J. The Role of Lysyl Oxidase Enzymes in Cardiac Function and Remodeling. Cells 2019; 8:cells8121483. [PMID: 31766500 PMCID: PMC6953057 DOI: 10.3390/cells8121483] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/11/2019] [Accepted: 11/20/2019] [Indexed: 02/06/2023] Open
Abstract
Lysyl oxidase (LOX) proteins comprise a family of five copper-dependent enzymes (LOX and four LOX-like isoenzymes (LOXL1-4)) critical for extracellular matrix (ECM) homeostasis and remodeling. The primary role of LOX enzymes is to oxidize lysyl and hydroxylysyl residues from collagen and elastin chains into highly reactive aldehydes, which spontaneously react with surrounding amino groups and other aldehydes to form inter- and intra-catenary covalent cross-linkages. Therefore, they are essential for the synthesis of a mature ECM and assure matrix integrity. ECM modulates cellular phenotype and function, and strikingly influences the mechanical properties of tissues. This explains the critical role of these enzymes in tissue homeostasis, and in tissue repair and remodeling. Cardiac ECM is mainly composed of fibrillar collagens which form a complex network that provides structural and biochemical support to cardiac cells and regulates cell signaling pathways. It is now becoming apparent that cardiac performance is affected by the structure and composition of the ECM and that any disturbance of the ECM contributes to cardiac disease progression. This review article compiles the major findings on the contribution of the LOX family to the development and progression of myocardial disorders.
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Affiliation(s)
- Cristina Rodríguez
- Institut de Recerca Hospital de la Santa Creu i Sant Pau-Programa ICCC, 08025 Barcelona, Spain
- Instituto de Investigación Biomédica Sant Pau (IIB-Sant Pau), 08041 Barcelona, Spain
- CIBER de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (C.R.); (J.M.-G.); Tel.: +34-93-556-5897 (C.R.); +34-93-556-5896 (J.M.-G.)
| | - José Martínez-González
- Instituto de Investigación Biomédica Sant Pau (IIB-Sant Pau), 08041 Barcelona, Spain
- CIBER de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, 28029 Madrid, Spain
- Instituto de Investigaciones Biomédicas de Barcelona (IIBB-CSIC), 08036 Barcelona, Spain
- Correspondence: (C.R.); (J.M.-G.); Tel.: +34-93-556-5897 (C.R.); +34-93-556-5896 (J.M.-G.)
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31
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Gong R, Lin W, Gao A, Liu Y, Li J, Sun M, Chen X, Han S, Men C, Sun Y, Liu J. Forkhead box C1 promotes metastasis and invasion of non-small cell lung cancer by binding directly to the lysyl oxidase promoter. Cancer Sci 2019; 110:3663-3676. [PMID: 31597217 PMCID: PMC6890438 DOI: 10.1111/cas.14213] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 09/19/2019] [Accepted: 10/02/2019] [Indexed: 12/11/2022] Open
Abstract
Increasing evidence indicates that human forkhead box C1 (FOXC1) plays important roles in tumor development and metastasis. However, the underlying molecular mechanism of FOXC1 in non–small cell lung cancer (NSCLC) metastasis remains unclear. Here, we identified FOXC1 as an independent prognostic factor in NSCLC and showed clear biological implications in invasion and metastasis. FOXC1 overexpression enhanced the proliferation, migration and invasion of NSCLC cells, whereas FOXC1 silencing impaired the effects both in vitro and in vivo. Importantly, we found a positive correlation between FOXC1 expression and lysyl oxidase (LOX) expression in NSCLC cells and patient samples. Downregulation of LOX or LOX activity inhibition in NSCLC cells inhibited the FOXC1‐driven effects on cellular migration and invasion. Xenograft models showed that inhibition of LOX activity by β‐aminopropionitrile monofumarate decreased the number of lung metastases. Mechanistically, we demonstrated a novel FOXC1‐LOX mechanism that was involved in the invasion and metastasis of NSCLC. Dual‐luciferase assay and ChIP identified that FOXC1 bound directly in the LOX promoter region and activated its transcription. Collectively, the present study offered new insight into FOXC1 in the mediation of NSCLC metastasis through interaction with the LOX promoter and further revealed that targeted inhibition of LOX protein activity could prevent lung metastasis in murine xenograft models. These data implicated FOXC1 as a potential therapeutic strategy for the treatment of NSCLC metastasis.
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Affiliation(s)
- Rumei Gong
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Wenli Lin
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Aiqin Gao
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Yanli Liu
- Provincial Key Laboratory of Radio-Oncology, Shandong Cancer Hospital and Institute, Jinan, China
| | - Juan Li
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Meili Sun
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Xiaozheng Chen
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Shuyi Han
- Genetic and Molecular Diagnostic Center, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Chengsong Men
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Yuping Sun
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Jie Liu
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
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Graham J, Raghunath M, Vogel V. Fibrillar fibronectin plays a key role as nucleator of collagen I polymerization during macromolecular crowding-enhanced matrix assembly. Biomater Sci 2019; 7:4519-4535. [PMID: 31436263 PMCID: PMC6810780 DOI: 10.1039/c9bm00868c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Macromolecular crowding is used by tissue engineers to accelerate extracellular matrix assembly in vitro, however, most mechanistic studies focus on the impact of crowding on collagen fiber assembly and largely ignore the highly abundant provisional matrix protein fibronectin. We show that the accelerated collagen I assembly as induced by the neutral crowding molecule Ficoll is regulated by cell access to fibronectin. Ficoll treatment leads to significant increases in the amount of surface adherent fibronectin, which can readily be harvested by cells to speed up fibrillogenesis. FRET studies reveal that Ficoll crowding also upregulates the total amount of fibronectin fibers in a low-tension state through upregulating fibronectin assembly. Since un-stretched fibronectin fibers have more collagen binding sites to nucleate the onset of collagen fibrillogenesis, our data suggest that the Ficoll-induced upregulation of low-tension fibronectin fibers contributes to enhanced collagen assembly in crowded conditions. In contrast, chemical cross-linking of fibronectin to the glass substrate prior to cell seeding prevents early force mediated fibronectin harvesting from the substrate and suppresses upregulation of collagen I assembly in the presence of Ficoll, even though the crowded environment is known to drive enzymatic cleavage of procollagen and collagen fiber formation. To show that our findings can be exploited for tissue engineering applications, we demonstrate that the addition of supplemental fibronectin in the form of an adsorbed coating markedly improves the speed of tissue formation under crowding conditions.
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Affiliation(s)
- Jenna Graham
- Department of Health Sciences and Technology, ETH Zürich, CH-8093 Zürich, Switzerland.
| | - Michael Raghunath
- ZHAW School of Life Sciences and Facility Management, Institute for Chemistry and Biotechnology, Center for Cell Biology and Tissue Engineering, CH-8820 Wädenswil, Switzerland
| | - Viola Vogel
- Department of Health Sciences and Technology, ETH Zürich, CH-8093 Zürich, Switzerland.
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Vindin H, Mithieux SM, Weiss AS. Elastin architecture. Matrix Biol 2019; 84:4-16. [DOI: 10.1016/j.matbio.2019.07.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 07/08/2019] [Accepted: 07/08/2019] [Indexed: 11/15/2022]
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Martínez-González J, Varona S, Cañes L, Galán M, Briones AM, Cachofeiro V, Rodríguez C. Emerging Roles of Lysyl Oxidases in the Cardiovascular System: New Concepts and Therapeutic Challenges. Biomolecules 2019; 9:biom9100610. [PMID: 31615160 PMCID: PMC6843517 DOI: 10.3390/biom9100610] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/07/2019] [Accepted: 10/10/2019] [Indexed: 12/13/2022] Open
Abstract
Lysyl oxidases (LOX and LOX-likes (LOXLs) isoenzymes) belong to a family of copper-dependent enzymes classically involved in the covalent cross-linking of collagen and elastin, a pivotal process that ensures extracellular matrix (ECM) stability and provides the tensile and elastic characteristics of connective tissues. Besides this structural role, in the last years, novel biological properties have been attributed to these enzymes, which can critically influence cardiovascular function. LOX and LOXLs control cell proliferation, migration, adhesion, differentiation, oxidative stress, and transcriptional regulation and, thereby, their dysregulation has been linked to a myriad of cardiovascular pathologies. Lysyl oxidase could modulate virtually all stages of the atherosclerotic process, from endothelial dysfunction and plaque progression to calcification and rupture of advanced and complicated plaques, and contributes to vascular stiffness in hypertension. The alteration of LOX/LOXLs expression underlies the development of other vascular pathologies characterized by a destructive remodeling of the ECM, such as aneurysm and artery dissections, and contributes to the adverse myocardial remodeling and dysfunction in hypertension, myocardial infarction, and obesity. This review examines the most recent advances in the study of LOX and LOXLs biology and their pathophysiological role in cardiovascular diseases with special emphasis on their potential as therapeutic targets.
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Affiliation(s)
- José Martínez-González
- Instituto de Investigaciones Biomédicas de Barcelona (IIBB-CSIC), 08036 Barcelona, Spain.
- CIBER de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, 28029 Madrid, Spain.
- Instituto de Investigación Biomédica Sant Pau (IIB-Sant Pau), 08041 Barcelona, Spain.
| | - Saray Varona
- CIBER de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, 28029 Madrid, Spain.
- Instituto de Investigación Biomédica Sant Pau (IIB-Sant Pau), 08041 Barcelona, Spain.
| | - Laia Cañes
- Instituto de Investigaciones Biomédicas de Barcelona (IIBB-CSIC), 08036 Barcelona, Spain.
- CIBER de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, 28029 Madrid, Spain.
- Instituto de Investigación Biomédica Sant Pau (IIB-Sant Pau), 08041 Barcelona, Spain.
| | - María Galán
- CIBER de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, 28029 Madrid, Spain.
- Instituto de Investigación Biomédica Sant Pau (IIB-Sant Pau), 08041 Barcelona, Spain.
- Institut de Recerca Hospital de la Santa Creu i Sant Pau-Programa ICCC, 08025 Barcelona, Spain.
| | - Ana M Briones
- CIBER de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, 28029 Madrid, Spain.
- Departmento de Farmacología, Facultad de Medicina, Universidad Autónoma de Madrid, Instituto de Investigación Hospital La Paz, 28029 Madrid, Spain.
| | - Victoria Cachofeiro
- CIBER de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, 28029 Madrid, Spain.
- Departamento de Fisiología, Facultad de Medicina, Universidad Complutense de Madrid-Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28040 Madrid, Spain.
| | - Cristina Rodríguez
- CIBER de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, 28029 Madrid, Spain.
- Instituto de Investigación Biomédica Sant Pau (IIB-Sant Pau), 08041 Barcelona, Spain.
- Institut de Recerca Hospital de la Santa Creu i Sant Pau-Programa ICCC, 08025 Barcelona, Spain.
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The Non-Fibrillar Side of Fibrosis: Contribution of the Basement Membrane, Proteoglycans, and Glycoproteins to Myocardial Fibrosis. J Cardiovasc Dev Dis 2019; 6:jcdd6040035. [PMID: 31547598 PMCID: PMC6956278 DOI: 10.3390/jcdd6040035] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/16/2019] [Accepted: 09/18/2019] [Indexed: 02/07/2023] Open
Abstract
The extracellular matrix (ECM) provides structural support and a microenvironmentfor soluble extracellular molecules. ECM is comprised of numerous proteins which can be broadly classified as fibrillar (collagen types I and III) and non-fibrillar (basement membrane, proteoglycans, and glycoproteins). The basement membrane provides an interface between the cardiomyocytes and the fibrillar ECM, while proteoglycans sequester soluble growth factors and cytokines. Myocardial fibrosis was originally only linked to accumulation of fibrillar collagens, but is now recognized as the expansion of the ECM including the non-fibrillar ECM proteins. Myocardial fibrosis can be reparative to replace the lost myocardium (e.g., ischemic injury or myocardial infarction), or can be reactive resulting from pathological activity of fibroblasts (e.g., dilated or hypertrophic cardiomyopathy). Contribution of fibrillar collagens to fibrosis is well studied, but the role of the non-fibrillar ECM proteins has remained less explored. In this article, we provide an overview of the contribution of the non-fibrillar components of the extracellular space of the heart to highlight the potential significance of these molecules in fibrosis, with direct evidence for some, although not all of these molecules in their direct contribution to fibrosis.
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36
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Lysyl oxidases: from enzyme activity to extracellular matrix cross-links. Essays Biochem 2019; 63:349-364. [DOI: 10.1042/ebc20180050] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/23/2019] [Accepted: 08/27/2019] [Indexed: 12/13/2022]
Abstract
AbstractThe lysyl oxidase family comprises five members in mammals, lysyl oxidase (LOX) and four lysyl oxidase like proteins (LOXL1-4). They are copper amine oxidases with a highly conserved catalytic domain, a lysine tyrosylquinone cofactor, and a conserved copper-binding site. They catalyze the first step of the covalent cross-linking of the extracellular matrix (ECM) proteins collagens and elastin, which contribute to ECM stiffness and mechanical properties. The role of LOX and LOXL2 in fibrosis, tumorigenesis, and metastasis, including changes in their expression level and their regulation of cell signaling pathways, have been extensively reviewed, and both enzymes have been identified as therapeutic targets. We review here the molecular features and three-dimensional structure/models of LOX and LOXLs, their role in ECM cross-linking, and the regulation of their cross-linking activity by ECM proteins, proteoglycans, and by inhibitors. We also make an overview of the major ECM cross-links, because they are the ultimate molecular readouts of LOX/LOXL activity in tissues. The recent 3D model of LOX, which recapitulates its known structural and biochemical features, will be useful to decipher the molecular mechanisms of LOX interaction with its various substrates, and to design substrate-specific inhibitors, which are potential antifibrotic and antitumor drugs.
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37
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González A, López B, Ravassa S, San José G, Díez J. Reprint of "The complex dynamics of myocardial interstitial fibrosis in heart failure. Focus on collagen cross-linking". BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1867:118521. [PMID: 31394074 DOI: 10.1016/j.bbamcr.2019.07.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 05/21/2019] [Accepted: 06/03/2019] [Indexed: 12/12/2022]
Abstract
Myocardial interstitial fibrosis (MIF) is a common finding in heart failure (HF) patients, both with preserved and reduced ejection fraction, as well as in HF animal models. MIF is associated with impaired cardiac function and worse clinical outcome. The impact of MIF is influenced not only by the quantity but also by changes in the quality of collagen fibers and in the extracellular matrix components, such as a shift in collagen types proportion, increased fibronectin polymerization and increased degree of collagen cross-linking (CCL). In particular, CCL, a process that renders collagen fibers stiffer and more resistant to degradation, is increased both in patients and animal models of HF. Importantly, in HF patients increased cardiac CCL is directly associated with increased left ventricular stiffness and a higher risk of hospitalization for HF. The aim of this review is to address the complexity of MIF in HF, focusing on CCL.
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Affiliation(s)
- Arantxa González
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain.
| | - Begoña López
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Susana Ravassa
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Gorka San José
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Javier Díez
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain; Departments of Cardiology and Cardiac Surgery and of Nephrology, Clínica Universidad de Navarra, Pamplona, Spain
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38
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González A, López B, Ravassa S, San José G, Díez J. The complex dynamics of myocardial interstitial fibrosis in heart failure. Focus on collagen cross-linking. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1866:1421-1432. [PMID: 31181222 DOI: 10.1016/j.bbamcr.2019.06.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 05/21/2019] [Accepted: 06/03/2019] [Indexed: 12/11/2022]
Abstract
Myocardial interstitial fibrosis (MIF) is a common finding in heart failure (HF) patients, both with preserved and reduced ejection fraction, as well as in HF animal models. MIF is associated with impaired cardiac function and worse clinical outcome. The impact of MIF is influenced not only by the quantity but also by changes in the quality of collagen fibers and in the extracellular matrix components, such as a shift in collagen types proportion, increased fibronectin polymerization and increased degree of collagen cross-linking (CCL). In particular, CCL, a process that renders collagen fibers stiffer and more resistant to degradation, is increased both in patients and animal models of HF. Importantly, in HF patients increased cardiac CCL is directly associated with increased left ventricular stiffness and a higher risk of hospitalization for HF. The aim of this review is to address the complexity of MIF in HF, focusing on CCL.
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Affiliation(s)
- Arantxa González
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain.
| | - Begoña López
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Susana Ravassa
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Gorka San José
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain
| | - Javier Díez
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA, Pamplona, Spain; CIBERCV, Carlos III Institute of Health, Madrid, Spain; Departments of Cardiology and Cardiac Surgery and of Nephrology, Clínica Universidad de Navarra, Pamplona, Spain
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39
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Theocharis AD, Manou D, Karamanos NK. The extracellular matrix as a multitasking player in disease. FEBS J 2019; 286:2830-2869. [PMID: 30908868 DOI: 10.1111/febs.14818] [Citation(s) in RCA: 228] [Impact Index Per Article: 45.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 02/06/2019] [Accepted: 03/22/2019] [Indexed: 12/12/2022]
Abstract
Extracellular matrices (ECMs) are highly specialized and dynamic three-dimensional (3D) scaffolds into which cells reside in tissues. ECM is composed of a variety of fibrillar components, such as collagens, fibronectin, and elastin, and non-fibrillar molecules as proteoglycans, hyaluronan, and glycoproteins including matricellular proteins. These macromolecular components are interconnected forming complex networks that actively communicate with cells through binding to cell surface receptors and/or matrix effectors. ECMs exert diverse roles, either providing tissues with structural integrity and mechanical properties essential for tissue functions or regulating cell phenotype and functions to maintain tissue homeostasis. ECM molecular composition and structure vary among tissues, and is markedly modified during normal tissue repair as well as during the progression of various diseases. Actually, abnormal ECM remodeling occurring in pathologic circumstances drives disease progression by regulating cell-matrix interactions. The importance of matrix molecules to normal tissue functions is also highlighted by mutations in matrix genes that give rise to genetic disorders with diverse clinical phenotypes. In this review, we present critical and emerging issues related to matrix assembly in tissues and the multitasking roles for ECM in diseases such as osteoarthritis, fibrosis, cancer, and genetic diseases. The mechanisms underlying the various matrix-based diseases are also discussed. Research focused on the highly dynamic 3D ECM networks will help to discover matrix-related causative abnormalities of diseases as well as novel diagnostic tools and therapeutic targets.
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Affiliation(s)
- Achilleas D Theocharis
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
| | - Dimitra Manou
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
| | - Nikos K Karamanos
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
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40
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Cortes E, Lachowski D, Robinson B, Sarper M, Teppo JS, Thorpe SD, Lieberthal TJ, Iwamoto K, Lee DA, Okada-Hatakeyama M, Varjosalo MT, Del Río Hernández AE. Tamoxifen mechanically reprograms the tumor microenvironment via HIF-1A and reduces cancer cell survival. EMBO Rep 2019; 20:e46557. [PMID: 30538116 PMCID: PMC6322388 DOI: 10.15252/embr.201846557] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 10/19/2018] [Accepted: 10/23/2018] [Indexed: 12/25/2022] Open
Abstract
The tumor microenvironment is fundamental to cancer progression, and the influence of its mechanical properties is increasingly being appreciated. Tamoxifen has been used for many years to treat estrogen-positive breast cancer. Here we report that tamoxifen regulates the level and activity of collagen cross-linking and degradative enzymes, and hence the organization of the extracellular matrix, via a mechanism involving both the G protein-coupled estrogen receptor (GPER) and hypoxia-inducible factor-1 alpha (HIF-1A). We show that tamoxifen reduces HIF-1A levels by suppressing myosin-dependent contractility and matrix stiffness mechanosensing. Tamoxifen also downregulates hypoxia-regulated genes and increases vascularization in PDAC tissues. Our findings implicate the GPER/HIF-1A axis as a master regulator of peri-tumoral stromal remodeling and the fibrovascular tumor microenvironment and offer a paradigm shift for tamoxifen from a well-established drug in breast cancer hormonal therapy to an alternative candidate for stromal targeting strategies in PDAC and possibly other cancers.
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MESH Headings
- Adenocarcinoma/drug therapy
- Adenocarcinoma/genetics
- Adenocarcinoma/pathology
- Animals
- Carcinoma, Pancreatic Ductal/drug therapy
- Carcinoma, Pancreatic Ductal/genetics
- Carcinoma, Pancreatic Ductal/pathology
- Cell Line, Tumor
- Cell Survival/drug effects
- Cellular Reprogramming/drug effects
- Fibroblasts/drug effects
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Mice
- Myosins/genetics
- Neovascularization, Pathologic/drug therapy
- Neovascularization, Pathologic/genetics
- Neovascularization, Pathologic/pathology
- Receptors, Estrogen/genetics
- Receptors, G-Protein-Coupled/genetics
- Signal Transduction/drug effects
- Tamoxifen/administration & dosage
- Tumor Microenvironment/drug effects
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Affiliation(s)
- Ernesto Cortes
- Cellular and Molecular Biomechanics Laboratory, Department of Bioengineering, Imperial College London, London, UK
| | - Dariusz Lachowski
- Cellular and Molecular Biomechanics Laboratory, Department of Bioengineering, Imperial College London, London, UK
| | - Benjamin Robinson
- Cellular and Molecular Biomechanics Laboratory, Department of Bioengineering, Imperial College London, London, UK
| | - Muge Sarper
- Cellular and Molecular Biomechanics Laboratory, Department of Bioengineering, Imperial College London, London, UK
| | - Jaakko S Teppo
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Stephen D Thorpe
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Tyler J Lieberthal
- Cellular and Molecular Biomechanics Laboratory, Department of Bioengineering, Imperial College London, London, UK
| | - Kazunari Iwamoto
- Laboratory of Cell Systems, Institute for Protein Research, Osaka University, Suita, Osaka, Japan
- Laboratory for Integrated Cellular Systems, RIKEN Center for Integrative Medical Sciences (IMS), Yokohama, Kanagawa, Japan
| | - David A Lee
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Mariko Okada-Hatakeyama
- Laboratory of Cell Systems, Institute for Protein Research, Osaka University, Suita, Osaka, Japan
- Laboratory for Integrated Cellular Systems, RIKEN Center for Integrative Medical Sciences (IMS), Yokohama, Kanagawa, Japan
| | | | - Armando E Del Río Hernández
- Cellular and Molecular Biomechanics Laboratory, Department of Bioengineering, Imperial College London, London, UK
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Kielosto M, Eriksson J, Nummela P, Yin M, Hölttä E. Divergent roles of lysyl oxidase family members in ornithine decarboxylase- and RAS-transformed mouse fibroblasts and human melanoma cells. Oncotarget 2018; 9:37733-37752. [PMID: 30701028 PMCID: PMC6340875 DOI: 10.18632/oncotarget.26508] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 12/13/2018] [Indexed: 12/12/2022] Open
Abstract
We have previously shown that proto-oncoprotein c-Jun is activated in ornithine decarboxylase (ODC)- and RAS-transformed mouse fibroblasts, and that the transformed morphology of these cells can be reversed by expressing the transactivation domain deletion mutant of c-Jun (TAM67). Here, we found that lysyl oxidase (Lox), encoding an extracellular matrix-modifying enzyme, is downregulated in a c-Jun-dependent manner in ODC-transformed fibroblasts (Odc cells). In addition to Lox, the Lox family members Lox-like 1 and 3 (Loxl1 and Loxl3) were found to be downregulated in Odc as well as in RAS-transformed fibroblasts (E4), whereas Lox-like 4 (Loxl4) was upregulated in Odc and downregulated in E4 cells compared to normal N1 fibroblasts. Tetracycline-regulatable LOX re-expression in Odc cells led to inhibition of cell growth and invasion in three-dimensional Matrigel in an activity-independent manner. On the contrary, LOX and especially LOXL2, LOXL3, and LOXL4 were found to be upregulated in several human melanoma cell lines, and LOX inhibitor B-aminopropionitrile inhibited the invasive growth of these cells particularly when co-cultured with fibroblasts in Matrigel. Knocking down the expression of LOX and especially LOXL2 in melanoma cells almost completely abrogated the invasive growth capability. Further, LOXL2 was significantly upregulated in clinical human primary melanomas compared to benign nevi, and high expression of LOXL2 in primary melanomas was associated with formation of metastases and shorter survival of patients. Thus, our studies reveal that inactive pro-LOX (together with Lox propeptide) functions as a tumor suppressor in ODC- and RAS-transformed murine fibroblasts by inhibiting cell growth and invasion, and active LOX and LOXL2 as tumor promoters in human melanoma cells by promoting their invasive growth.
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Affiliation(s)
- Mari Kielosto
- Department of Pathology, University of Helsinki, Helsinki, Finland
| | - Johanna Eriksson
- Department of Pathology, University of Helsinki, Helsinki, Finland
| | - Pirjo Nummela
- Department of Pathology, University of Helsinki, Helsinki, Finland.,Current address: University of Helsinki, Genome-Scale Biology Research Program, Helsinki, Finland
| | - Miao Yin
- Department of Pathology, University of Helsinki, Helsinki, Finland
| | - Erkki Hölttä
- Department of Pathology, University of Helsinki, Helsinki, Finland
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42
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PEGylated pUR4/FUD peptide inhibitor of fibronectin fibrillogenesis decreases fibrosis in murine Unilateral Ureteral Obstruction model of kidney disease. PLoS One 2018; 13:e0205360. [PMID: 30356276 PMCID: PMC6200241 DOI: 10.1371/journal.pone.0205360] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 09/24/2018] [Indexed: 01/06/2023] Open
Abstract
Fibronectin is a blood and extracellular matrix glycoprotein that plays important roles in wound healing and fibrosis since it controls the deposition of collagen and other extracellular matrix molecules and is a substrate for infiltrating lymphocytes. Using a high-affinity fibronectin-binding peptide (FUD/pUR4) that inhibits fibronectin deposition into extracellular matrix (ECM), we tested the ability of a PEGylated FUD/pUR4 (PEG-FUD) to inhibit fibrosis in the Unilateral Ureteral Obstruction (UUO) kidney disease model. Fibronectin fibrillogenesis assays, using human fibroblasts and human proximal tubular epithelial cultures, showed that PEG-FUD can inhibit fibronectin fibrillogenesis in vitro with an IC50 similar to unconjugated FUD, in the order of 20–35 nM. In contrast, a mutated FUD (mFUD) conjugated to PEG that lacked activity did not inhibit fibronectin assembly, even at 20 μM. The in vivo activity of PEG-FUD was tested in the murine UUO model by daily subcutaneous injection of 12.5 mg/kg for 7 days until harvest at day 10. Control treatments included saline, PEG, unconjugated FUD, and PEG-mFUD. Immunoblotting studies showed that fibronectin was enriched in the extracellular matrix fractions of extracted UUO kidneys, compared to contralateral untreated kidneys. In vivo, PEG-FUD significantly decreased fibronectin by ~70% in UUO kidneys as determined by both IHC and immunoblotting, respectively. In contrast, neither PEG-mFUD, PEG, nor saline had any significant effect. PEG-FUD also decreased collagens I and III and CD45-expressing cells (leukocytes) by ~60% and ~50%, as ascertained by picrosirius red staining and IHC, respectively. Immunoblotting studies also showed that the fibronectin remaining after PEG-FUD treatment was intact. Utilizing a custom-made polyclonal antibody generated against pUR4/FUD, intact PEG-FUD was detected by immunoblotting in both the ECM and lysate fractions of UUO kidneys. No adverse reaction or event was noted with any treatment. In summary, these studies suggest that PEG-FUD reached the kidneys without degradation, and decreased fibronectin incorporation into interstitial tissue. Decreased fibronectin was accompanied by a decrease in collagen and leukocyte infiltration. We propose that PEG-FUD, a specific inhibitor of fibronectin assembly, may be a candidate therapeutic for the treatment of fibrosis in kidney diseases.
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Foster DS, Jones RE, Ransom RC, Longaker MT, Norton JA. The evolving relationship of wound healing and tumor stroma. JCI Insight 2018; 3:99911. [PMID: 30232274 DOI: 10.1172/jci.insight.99911] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The stroma in solid tumors contains a variety of cellular phenotypes and signaling pathways associated with wound healing, leading to the concept that a tumor behaves as a wound that does not heal. Similarities between tumors and healing wounds include fibroblast recruitment and activation, extracellular matrix (ECM) component deposition, infiltration of immune cells, neovascularization, and cellular lineage plasticity. However, unlike a wound that heals, the edges of a tumor are constantly expanding. Cell migration occurs both inward and outward as the tumor proliferates and invades adjacent tissues, often disregarding organ boundaries. The focus of our review is cancer associated fibroblast (CAF) cellular heterogeneity and plasticity and the acellular matrix components that accompany these cells. We explore how similarities and differences between healing wounds and tumor stroma continue to evolve as research progresses, shedding light on possible therapeutic targets that can result in innovative stromal-based treatments for cancer.
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Affiliation(s)
- Deshka S Foster
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, and.,Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - R Ellen Jones
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, and
| | - Ryan C Ransom
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, and
| | - Michael T Longaker
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, and.,Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Jeffrey A Norton
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, and.,Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
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Vallet SD, Miele AE, Uciechowska-Kaczmarzyk U, Liwo A, Duclos B, Samsonov SA, Ricard-Blum S. Insights into the structure and dynamics of lysyl oxidase propeptide, a flexible protein with numerous partners. Sci Rep 2018; 8:11768. [PMID: 30082873 PMCID: PMC6078952 DOI: 10.1038/s41598-018-30190-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 07/20/2018] [Indexed: 01/29/2023] Open
Abstract
Lysyl oxidase (LOX) catalyzes the oxidative deamination of lysine and hydroxylysine residues in collagens and elastin, which is the first step of the cross-linking of these extracellular matrix proteins. It is secreted as a proenzyme activated by bone morphogenetic protein-1, which releases the LOX catalytic domain and its bioactive N-terminal propeptide. We characterized the recombinant human propeptide by circular dichroism, dynamic light scattering, and small-angle X-ray scattering (SAXS), and showed that it is elongated, monomeric, disordered and flexible (Dmax: 11.7 nm, Rg: 3.7 nm). We generated 3D models of the propeptide by coarse-grained molecular dynamics simulations restrained by SAXS data, which were used for docking experiments. Furthermore, we have identified 17 new binding partners of the propeptide by label-free assays. They include four glycosaminoglycans (hyaluronan, chondroitin, dermatan and heparan sulfate), collagen I, cross-linking and proteolytic enzymes (lysyl oxidase-like 2, transglutaminase-2, matrix metalloproteinase-2), a proteoglycan (fibromodulin), one growth factor (Epidermal Growth Factor, EGF), and one membrane protein (tumor endothelial marker-8). This suggests new roles for the propeptide in EGF signaling pathway.
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Affiliation(s)
- Sylvain D Vallet
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622, Villeurbanne cedex, France
| | - Adriana E Miele
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622, Villeurbanne cedex, France
| | - Urszula Uciechowska-Kaczmarzyk
- Laboratory of Molecular Modeling, Department of Theoretical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Adam Liwo
- Laboratory of Molecular Modeling, Department of Theoretical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Bertrand Duclos
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622, Villeurbanne cedex, France
| | - Sergey A Samsonov
- Laboratory of Molecular Modeling, Department of Theoretical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Sylvie Ricard-Blum
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622, Villeurbanne cedex, France.
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Stangenberg S, Saad S, Schilter HC, Zaky A, Gill A, Pollock CA, Wong MG. Lysyl oxidase-like 2 inhibition ameliorates glomerulosclerosis and albuminuria in diabetic nephropathy. Sci Rep 2018; 8:9423. [PMID: 29930330 PMCID: PMC6013429 DOI: 10.1038/s41598-018-27462-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 05/29/2018] [Indexed: 12/13/2022] Open
Abstract
Diabetic nephropathy is characterised by the excessive amount of extracellular matrix in glomeruli and tubulointerstitial space. Lysyl oxidase-like 2 (LOXL2) is elevated in renal fibrosis and known to play key roles in ECM stabilisation by facilitating collagen cross-links, epithelial to mesenchymal transition and myofibroblast activation. Thus, targeting LOXL2 may prove to be a useful strategy to prevent diabetic nephropathy. We explored the renoprotective effect of a selective small molecule LOXL2 inhibitor (PXS-S2B) in a streptozotocin-induced diabetes model. Diabetic mice were treated with PXS-S2B for 24 weeks and outcomes compared with untreated diabetic mice and with telmisartan treated animals as comparator of current standard of care. Diabetic mice had albuminuria, higher glomerulosclerosis scores, upregulation of fibrosis markers and increased renal cortical LOXL2 expression. Treatment with PXS-S2B reduced albuminuria and ameliorated glomerulosclerosis. This was associated with reduced expression of glomerular fibronectin and tubulointerstitial collagen I. The renoprotective effects of both PXS-S2B and telmisartan were more marked in the glomerular compartment than in the tubulointerstitial space. The study reveals that LOXL2 inhibition was beneficial in preserving glomerular structure and function. Thus, LOXL2 may be a potential therapeutic target in diabetic nephropathy.
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Affiliation(s)
- Stefanie Stangenberg
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.,Sydney Medical School Northern, University of Sydney, NSW, Sydney, Australia
| | - Sonia Saad
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.
| | - Heidi C Schilter
- Pharmaxis Pharmaceutical Ltd., Frenchs Forest, NSW, Sydney, Australia
| | - Amgad Zaky
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia
| | - Anthony Gill
- Department of Cancer Research and Pathology Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia
| | - Carol A Pollock
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.,Sydney Medical School Northern, University of Sydney, NSW, Sydney, Australia
| | - Muh Geot Wong
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.
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Piperigkou Z, Götte M, Theocharis AD, Karamanos NK. Insights into the key roles of epigenetics in matrix macromolecules-associated wound healing. Adv Drug Deliv Rev 2018; 129:16-36. [PMID: 29079535 DOI: 10.1016/j.addr.2017.10.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/14/2017] [Accepted: 10/20/2017] [Indexed: 02/08/2023]
Abstract
Extracellular matrix (ECM) is a dynamic network of macromolecules, playing a regulatory role in cell functions, tissue regeneration and remodeling. Wound healing is a tissue repair process necessary for the maintenance of the functionality of tissues and organs. This highly orchestrated process is divided into four temporally overlapping phases, including hemostasis, inflammation, proliferation and tissue remodeling. The dynamic interplay between ECM and resident cells exerts its critical role in many aspects of wound healing, including cell proliferation, migration, differentiation, survival, matrix degradation and biosynthesis. Several epigenetic regulatory factors, such as the endogenous non-coding microRNAs (miRNAs), are the drivers of the wound healing response. microRNAs have pivotal roles in regulating ECM composition during wound healing and dermal regeneration. Their expression is associated with the distinct phases of wound healing and they serve as target biomarkers and targets for systematic regulation of wound repair. In this article we critically present the importance of epigenetics with particular emphasis on miRNAs regulating ECM components (i.e. glycoproteins, proteoglycans and matrix proteases) that are key players in wound healing. The clinical relevance of miRNA targeting as well as the delivery strategies designed for clinical applications are also presented and discussed.
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Dahal S, Broekelman T, Mecham RP, Ramamurthi A. Maintaining Elastogenicity of Mesenchymal Stem Cell-Derived Smooth Muscle Cells in Two-Dimensional Culture. Tissue Eng Part A 2018; 24:979-989. [PMID: 29264957 DOI: 10.1089/ten.tea.2017.0237] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Abdominal aortic aneurysms (AAAs) are localized expansions of the abdominal aorta that grow slowly to rupture. AAA growth is driven by irreversible elastic matrix breakdown in the aorta wall by chronically upregulated matrix metalloproteases (MMPs). Since adult vascular smooth muscle cells (SMCs) poorly regenerate elastic matrix, we previously explored utility of bone marrow mesenchymal stem cells and SMCs derived therefrom (BM-SMCs) for this purpose. One specific differentiated phenotype (cBM-SMCs) generated on a fibronectin substrate in presence of exogenous transforming growth factor-β and platelet-derived growth factor exhibited superior elastogenicity versus other phenotypes, and usefully provided proelastogenic and antiproteolytic stimuli to aneurysmal SMCs. Since in vivo cell therapy demands large cell inoculates, these derived SMCs must be propagated in vitro while maintaining their superior elastogenic, proelastogenic, and antiproteolytic characteristics. In this work, we thus investigated the culture conditions that must be provided to this propagation phase, which ensure that the differentiated SMCs maintain their phenotype and matrix regenerative benefits. Our results indicate that our BM-SMCs retain their phenotype in long-term culture even in the absence of differentiation growth factors and fibronectin substrate, but these conditions must be continued to be provided during postdifferentiation propagation if they are to maintain their superior elastic matrix deposition, crosslinking, and fiber formation properties. Our study, however, showed that cells propagated under these conditions exhibit higher expression of MMP-2, but favorably, no expression of elastolytic MMP-9. Hence, the study outcomes provide crucial guidelines to maintain phenotypic stability of cBM-SMCs during their propagation in two-dimensional culture before their delivery to the AAA wall for therapy.
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Affiliation(s)
- Shataakshi Dahal
- 1 Department of Biomedical Engineering, Cleveland Clinic , Cleveland, Ohio
| | - Thomas Broekelman
- 2 Department of Cell Biology and Physiology, Washington University at St. Louis , St. Louis, Missouri
| | - Robert P Mecham
- 2 Department of Cell Biology and Physiology, Washington University at St. Louis , St. Louis, Missouri
| | - Anand Ramamurthi
- 1 Department of Biomedical Engineering, Cleveland Clinic , Cleveland, Ohio.,3 Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University , Cleveland, Ohio
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Filla MS, Dimeo KD, Tong T, Peters DM. Disruption of fibronectin matrix affects type IV collagen, fibrillin and laminin deposition into extracellular matrix of human trabecular meshwork (HTM) cells. Exp Eye Res 2017; 165:7-19. [PMID: 28860021 PMCID: PMC5705399 DOI: 10.1016/j.exer.2017.08.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 06/02/2017] [Accepted: 08/27/2017] [Indexed: 10/19/2022]
Abstract
Fibronectin fibrils are a major component of the extracellular matrix (ECM) of the trabecular meshwork (TM). They are a key mediator of the formation of the ECM which controls aqueous humor outflow and contributes to the pathogenesis of glaucoma. The purpose of this work was to determine if a fibronectin-binding peptide called FUD, derived from the Streptococcus pyogenes Functional Upstream Domain of the F1 adhesin protein, could be used to control fibronectin fibrillogenesis and hence ECM formation under conditions where its expression was induced by treatment with the glucocorticoid dexamethasone. FUD was very effective at preventing fibronectin fibrillogenesis in the presence or absence of steroid treatment as well as the removal of existing fibronectin fibrils. Disruption of fibronectin fibrillogenesis by FUD also disrupted the incorporation of type IV collagen, laminin and fibrillin into the ECM. The effect of FUD on these other protein matrices, however, was found to be dependent upon the maturity of the ECM when FUD was added. FUD effectively disrupted the incorporation of these other proteins into matrices when added to newly confluent cells that were forming a nascent ECM. In contrast, FUD had no effect on these other protein matrices if the cell cultures already possessed a pre-formed, mature ECM. Our studies indicate that FUD can be used to control fibronectin fibrillogenesis and that these fibrils play a role in regulating the assembly of other ECM protein into matrices involving type IV collagen, laminin, and fibrillin within the TM. This suggests that under in vivo conditions, FUD would selectively disrupt fibronectin fibrils and de novo assembly of other proteins into the ECM. Finally, our studies suggest that targeting fibronectin fibril assembly may be a viable treatment for POAG as well as other glaucomas involving excessive or abnormal matrix deposition of the ECM.
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Affiliation(s)
- Mark S Filla
- Departments of Pathology & Laboratory Medicine, University of Wisconsin, Madison, WI 53706, United States
| | - Kaylee D Dimeo
- Departments of Pathology & Laboratory Medicine, University of Wisconsin, Madison, WI 53706, United States
| | - Tiegang Tong
- Departments of Pathology & Laboratory Medicine, University of Wisconsin, Madison, WI 53706, United States
| | - Donna M Peters
- Departments of Pathology & Laboratory Medicine, University of Wisconsin, Madison, WI 53706, United States; Ophthalmology & Visual Sciences, University of Wisconsin, Madison, WI 53706, United States.
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Trackman PC. Functional importance of lysyl oxidase family propeptide regions. J Cell Commun Signal 2017; 12:45-53. [PMID: 29086201 DOI: 10.1007/s12079-017-0424-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 10/17/2017] [Indexed: 12/14/2022] Open
Abstract
The lysyl oxidase family of proteins is primarily known for its critical role in catalyzing extracellular oxidative deamination of hydroxylysine and lysine residues in collagens, and lysine residues in elastin required for connective tissue structure and function. Lysyl oxidases have additional important biological functions in health and disease. While the enzyme domains are highly conserved, the propeptide regions are less uniform, and have biological activity, some of which are independent of their respective enzymes. This review summarizes what has been published regarding the functions of the propeptide regions of this family of proteins in the context of extracellular matrix biosynthesis, fibrosis and cancer biology. Although much has been learned, there is a need for greater attention to structure/function relationships and mechanisms to more fully understand these multifunctional proteins.
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Affiliation(s)
- Philip C Trackman
- Henry M. Goldman School of Dental Medicine, Department of Molecular and Cell Biology, Boston University, 700 Albany Street, W-201, Boston, MA, 02118, USA.
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50
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Kumari S, Panda TK, Pradhan T. Lysyl Oxidase: Its Diversity in Health and Diseases. Indian J Clin Biochem 2017; 32:134-141. [PMID: 28428687 PMCID: PMC5382067 DOI: 10.1007/s12291-016-0576-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/06/2016] [Indexed: 01/27/2023]
Abstract
The mechanical properties of extracellular matrix (ECM) and connective tissues is largely dependent on the collagen and elastin structure. Lysyl oxidase (LOX) plays a critical role in the formation and repair of the ECM by oxidizing lysine residues in elastin and collagen, thereby initiating the formation of covalent cross linkages which stabilize these fibrous proteins. Due to its multiple functions both extracellularly and intracellularly, lysyl oxidase is involved in several processes in the tumorigenic pathway, in many different cancer types and stages. Alteration in LOX activity is implicated in many diseases and disorders including inflammation and inflammatory diseases, fibrosis of distinct organs and fibrotic disorders, cancer promotion and progression. There are only sparse reports of mutations or epigenetic alterations in the LOX gene. This review provides the recent clinical developments in the molecular mechanisms and pathologic process, pointing out LOX as a potential therapeutic target in translational medicine.
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Affiliation(s)
- Suchitra Kumari
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), Bhubaneswar, India
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