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Ru Y, Gu H, Sun L, Zhang W, Wang L. Mechanical Stretch-Induced ATP Release from Osteocytes Promotes Osteogenesis of Bone Marrow Mesenchymal Stem Cells. Discov Med 2024; 36:494-508. [PMID: 38531790 DOI: 10.24976/discov.med.202436182.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
BACKGROUND Mandibular distraction osteogenesis (MDO) is a highly effective method for bone regeneration, commonly employed in treating craniofacial defects and deformities. Osteocytes sense mechanical forces in the pericellular space, relay external stimuli to biochemical changes, and send signals to other effector cells, including bone marrow mesenchymal stem cells (BM-MSCs), to regulate bone resorption and formation. Piezo1 potentially affects the secretion signal molecules of bone cells under mechanical stretch. The primary aim of this study was to enhance our comprehension of the molecular biology underlying this therapeutic approach and to identify specific signaling molecules that facilitate bone formation in response to stretch forces. METHODS Mechanical stretching was applied to negative controls and Piezo1 knockdown osteocyte-like MLO-Y4 cells. Alkaline phosphatase and Alizarin Red S staining were used to survey the osteogenic potential of BM-MSCs. The production and secretion content of adenosine triphosphate (ATP) was measured using ATP content determination analysis. Pathway-related and osteo-specific genes and proteins were evaluated using real-time polymerase chain reaction (RT-PCR), Western blots, and immunofluorescence. Mitochondrial organization was examined with a transmission electron microscope. RESULTS The conditioned medium of stretch-exposed MLO-Y4s significantly upregulated osteogenesis-related indicators of BM-MSCs (p < 0.001). The upregulation of BM-MSC osteogenesis was associated with ATP release from osteocytes. Mechanically induced calcium transfer and transcriptional coactivator with PDZ-binding motif (TAZ) nuclear translocation mediated by Piezo1 could promote mitochondrial fission and ATP release. Osteocytes detected stretch forces through Piezo1, triggering calcium influx, TAZ nuclear translocation, and ATP production. CONCLUSIONS The stretch stimulation of Piezo1 induces calcium influx, which in turn promotes calcium-related TAZ nuclear translocation, changes in mitochondrial dynamics, and the release of ATP in osteocytes. This signaling cascade leads to an up-regulation in the osteogenic capacity of BM-MSCs. Mitochondrial energy metabolism of mechanosensitive protein Piezo1-dependent and ATP release may provide a new effective intervention method for mechanically related bone remodeling.
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Affiliation(s)
- Yiwen Ru
- Department of Orthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, 210029 Nanjing, Jiangsu, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, 210029 Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, 210029 Nanjing, Jiangsu, China
| | - Hong Gu
- Department of Orthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, 210029 Nanjing, Jiangsu, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, 210029 Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, 210029 Nanjing, Jiangsu, China
| | - Lian Sun
- Department of Orthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, 210029 Nanjing, Jiangsu, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, 210029 Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, 210029 Nanjing, Jiangsu, China
| | - WeiBing Zhang
- Department of Stomatology, Dushu Lake Hospital Affiliated to Soochow University, 215000 Suzhou, Jiangsu, China
- Department of Stomatology, Medical Center of Soochow University, 215000 Suzhou, Jiangsu, China
| | - Lin Wang
- Department of Orthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, 210029 Nanjing, Jiangsu, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, 210029 Nanjing, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, 210029 Nanjing, Jiangsu, China
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Zhang Y, Cui J, Cang Z, Pei J, Zhang X, Song B, Fan X, Ma X, Li Y. Hair follicle stem cells promote epidermal regeneration under expanded condition. Front Physiol 2024; 15:1306011. [PMID: 38455843 PMCID: PMC10917960 DOI: 10.3389/fphys.2024.1306011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 02/09/2024] [Indexed: 03/09/2024] Open
Abstract
Skin soft tissue expansion is the process of obtaining excess skin mixed with skin development, wound healing, and mechanical stretching. Previous studies have reported that tissue expansion significantly induces epidermal proliferation throughout the skin. However, the mechanisms underlying epidermal regeneration during skin soft tissue expansion are yet to be clarified. Hair follicle stem cells (HFSCs) have been recognized as a promising approach for epidermal regeneration. This study examines HFSC-related epidermal regeneration mechanisms under expanded condition and proposes a potential method for its cellular and molecular regulation.
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Affiliation(s)
| | | | | | | | | | | | - Xing Fan
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Xianjie Ma
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Yang Li
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
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3
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Zhao J, Yoshizumi M. A Comprehensive Retrospective Study on the Mechanisms of Cyclic Mechanical Stretch-Induced Vascular Smooth Muscle Cell Death Underlying Aortic Dissection and Potential Therapeutics for Preventing Acute Aortic Aneurysm and Associated Ruptures. Int J Mol Sci 2024; 25:2544. [PMID: 38473793 DOI: 10.3390/ijms25052544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
Acute aortic dissection (AAD) and associated ruptures are the leading causes of death in cardiovascular diseases (CVDs). Hypertension is a prime risk factor for AAD. However, the molecular mechanisms underlying AAD remain poorly understood. We previously reported that cyclic mechanical stretch (CMS) leads to the death of rat aortic smooth muscle cells (RASMCs). This review focuses on the mechanisms of CMS-induced vascular smooth muscle cell (VSMC) death. Moreover, we have also discussed the potential therapeutics for preventing AAD and aneurysm ruptures.
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Affiliation(s)
- Jing Zhao
- Department of Pharmacology, Nara Medical University School of Medicine, 840 Shijo-Cho, Kashihara 634-8521, Japan
| | - Masanori Yoshizumi
- Department of Pharmacology, Nara Medical University School of Medicine, 840 Shijo-Cho, Kashihara 634-8521, Japan
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Shan S, He J, Sun Q, Zhu K, Li Y, Reid B, Li Q, Zhao M. Dynamics of cutaneous atmospheric oxygen uptake in response to mechanical stretch revealed by optical fiber microsensor. Exp Dermatol 2023; 32:2112-2120. [PMID: 37859506 PMCID: PMC10843412 DOI: 10.1111/exd.14957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 09/17/2023] [Accepted: 10/06/2023] [Indexed: 10/21/2023]
Abstract
Skin expands and regenerates in response to mechanical stretch. This important homeostasis process is critical for skin biology and can be exploited to generate extra skin for reconstructive surgery. Atmospheric oxygen uptake is important in skin homeostasis. However, whether and how cutaneous atmospheric oxygen uptake changes during mechanical stretch remains unclear, and relevant research tools to quantify oxygen flux are limited. Herein, we used the scanning micro-optrode technique (SMOT), a non-invasive self-referencing optical fiber microsensor, to achieve real-time measurement of cutaneous oxygen uptake from the atmosphere. An in vivo mechanical stretch-induced skin expansion model was established, and an in vitro Flexcell Tension system was used to stretch epidermal cells. We found that oxygen influx of skin increased dramatically after stretching for 1 to 3 days and decreased to the non-stretched level after 7 days. The enhanced oxygen influx of stretched skin was associated with increased epidermal basal cell proliferation and impaired epidermal barrier. In conclusion, mechanical stretch increases cutaneous oxygen uptake with spatial-temporal characteristics, correlating with cell proliferation and barrier changes, suggesting a fundamental mechanistic role of oxygen uptake in the skin in response to mechanical stretch. Optical fiber microsensor-based oxygen uptake detection provides a non-invasive approach to understand skin homeostasis.
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Affiliation(s)
- Shengzhou Shan
- Department of Dermatology, Institute for Regenerative Cures, University of California, Davis, 2921 Stockton Boulevard, Sacramento, CA 95817, USA
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Jiahao He
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Qin Sun
- Department of Dermatology, Institute for Regenerative Cures, University of California, Davis, 2921 Stockton Boulevard, Sacramento, CA 95817, USA
- School of Life Science, Yunnan Normal University, Yuhua District, Kunming, Yunnan 650500, China
| | - Kan Zhu
- Department of Dermatology, Institute for Regenerative Cures, University of California, Davis, 2921 Stockton Boulevard, Sacramento, CA 95817, USA
- Department of Ophthalmology & Vision Science, Institute for Regenerative Cures, University of California, Davis, 1 Shields Avenue, CA 95616, USA
| | - Yuanyuan Li
- Department of Dermatology, Institute for Regenerative Cures, University of California, Davis, 2921 Stockton Boulevard, Sacramento, CA 95817, USA
| | - Brian Reid
- Department of Dermatology, Institute for Regenerative Cures, University of California, Davis, 2921 Stockton Boulevard, Sacramento, CA 95817, USA
- Department of Ophthalmology & Vision Science, Institute for Regenerative Cures, University of California, Davis, 1 Shields Avenue, CA 95616, USA
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China
| | - Min Zhao
- Department of Dermatology, Institute for Regenerative Cures, University of California, Davis, 2921 Stockton Boulevard, Sacramento, CA 95817, USA
- Department of Ophthalmology & Vision Science, Institute for Regenerative Cures, University of California, Davis, 1 Shields Avenue, CA 95616, USA
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Bai R, Guo Y, Liu W, Song Y, Yu Z, Ma X. The Roles of WNT Signaling Pathways in Skin Development and Mechanical-Stretch-Induced Skin Regeneration. Biomolecules 2023; 13:1702. [PMID: 38136575 PMCID: PMC10741662 DOI: 10.3390/biom13121702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 12/24/2023] Open
Abstract
The WNT signaling pathway plays a critical role in a variety of biological processes, including development, adult tissue homeostasis maintenance, and stem cell regulation. Variations in skin conditions can influence the expression of the WNT signaling pathway. In light of the above, a deeper understanding of the specific mechanisms of the WNT signaling pathway in different physiological and pathological states of the skin holds the potential to significantly advance clinical treatments of skin-related diseases. In this review, we present a comprehensive analysis of the molecular and cellular mechanisms of the WNT signaling pathway in skin development, wound healing, and mechanical stretching. Our review sheds new light on the crucial role of the WNT signaling pathway in the regulation of skin physiology and pathology.
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Affiliation(s)
- Ruoxue Bai
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yaotao Guo
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
- Department of The Cadet Team 6, School of Basic Medicine, Fourth Military Medical University, Xi’an 710032, China
| | - Wei Liu
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yajuan Song
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Zhou Yu
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Xianjie Ma
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
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Man K, Liu J, Liang C, Corona C, Story MD, Meckes B, Yang Y. Biomimetic Human Lung Alveolar Interstitium Chip with Extended Longevity. ACS Appl Mater Interfaces 2023. [PMID: 37463843 DOI: 10.1021/acsami.3c04091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Determining the mechanistic causes of lung diseases, developing new treatments thereof, and assessing toxicity whether from chemical exposures or engineered nanomaterials would benefit significantly from a preclinical human lung alveolar interstitium model of physiological relevance. The existing preclinical models have limitations because they fail to replicate the key anatomical and physiological characteristics of human alveoli. Thus, a human lung alveolar interstitium chip was developed to imitate key alveolar microenvironmental factors including an electrospun nanofibrous membrane as the analogue of the basement membrane for co-culture of epithelial cells with fibroblasts embedded in 3D collagenous gels, physiologically relevant interstitial matrix stiffness, interstitial fluid flow, and 3D breathing-like mechanical stretch. The biomimetic chip substantially improved the epithelial barrier function compared to transwell models. Moreover, the chip having a gel made of a collagen I-fibrin blend as the interstitial matrix sustained the interstitium integrity and further enhanced the epithelial barrier, resulting in a longevity that extended beyond eight weeks. The assessment of multiwalled carbon nanotube toxicity on the chip was in line with the animal study.
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Affiliation(s)
- Kun Man
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Jiafeng Liu
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Cindy Liang
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Christopher Corona
- Anne Burnett Marion School of Medicine, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Michael D Story
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Brian Meckes
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Yong Yang
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
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Zhu C, Ding H, Shi L, Zhang S, Tong X, Huang M, Liu L, Guan X, Zou J, Yuan Y, Chen X. Exercise improved bone health in aging mice: a role of SIRT1 in regulating autophagy and osteogenic differentiation of BMSCs. Front Endocrinol (Lausanne) 2023; 14:1156637. [PMID: 37476496 PMCID: PMC10355118 DOI: 10.3389/fendo.2023.1156637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 06/07/2023] [Indexed: 07/22/2023] Open
Abstract
Introduction This study was designed to investigate the effect of running exercise on improving bone health in aging mice and explore the role of the SIRT1 in regulating autophagy and osteogenic differentiation of Bone marrow Mesenchymal Stem Cells (BMSCs). Methods Twelve-month-old male C57BL/6J mice were used in this study as the aging model and were assigned to treadmill running exercise for eight weeks. Non-exercise male C57BL/6J mice of the same old were used as aging control and five-month-old mice were used as young controls. BMSCs were isolated from mice and subjected to mechanical stretching stimulation in vitro. Results The results showed that aging mice had lower bone mass, bone mineral density (BMD), and autophagy than young mice, while running exercise improved BMD and bone mass as well as upregulated autophagy in bone cells. Mechanical loading increased osteogenic differentiation and autophagy in BMSCs, and knockdown of SIRT1 in BMSCs demonstrated that SIRT1-regulated autophagy involved the mechanical loading activation of osteogenic differentiation. Conclusion Taken together, this study revealed that exercise improved bone health during aging by activating bone formation, which can be attributed to osteogenic differentiation of BMSCs through the activation of SIRT1-mediated autophagy. The mechanisms underlying this effect may involve mechanical loading.
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Affiliation(s)
- Chengyu Zhu
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
- School of Sports Science, Wenzhou Medical University, Wenzhou, China
| | - Haili Ding
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Liang Shi
- Department of Gynaecology and Obstetrics, Xinchang People’s Hospital, Shaoxing, China
| | - Shihua Zhang
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Xiaoyang Tong
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Mei Huang
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Lifei Liu
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
- Department of Rehabilitation, The People’s Hospital of Liaoning Province, Shenyang, China
| | - Xiaotian Guan
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Jun Zou
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Yu Yuan
- School of Exercise and Health, Guangzhou Sport University, Guangzhou, China
| | - Xi Chen
- School of Sports Science, Wenzhou Medical University, Wenzhou, China
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Colvert CA, Hawkins KP, Semenikhina M, Stefanenko M, Pavlykivska O, Oates JC, DeLeon-Pennell KY, Palygin O, Van Beusecum JP. Endothelial mechanical stretch regulates the immunological synapse interface of renal endothelial cells in a sex-dependent manner. Am J Physiol Renal Physiol 2023; 325:F22-F37. [PMID: 37167273 PMCID: PMC10292970 DOI: 10.1152/ajprenal.00258.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 04/27/2023] [Accepted: 04/27/2023] [Indexed: 05/13/2023] Open
Abstract
Increased mechanical endothelial cell stretch contributes to the development of numerous cardiovascular and renal pathologies. Recent studies have shone a light on the importance of sex-dependent inflammation in the pathogenesis of renal disease states. The endothelium plays an intimate and critical role in the orchestration of immune cell activation through upregulation of adhesion molecules and secretion of cytokines and chemokines. While endothelial cells are not recognized as professional antigen-presenting cells, in response to cytokine stimulation, endothelial cells can express both major histocompatibility complex (MHC) I and MHC II. MHCs are essential to forming a part of the immunological synapse interface during antigen presentation to adaptive immune cells. Whether MHC I and II are increased under increased mechanical stretch is unknown. Due to hypertension being multifactorial, we hypothesized that increased mechanical endothelial stretch promotes the regulation of MHCs and key costimulatory proteins on mouse renal endothelial cells (MRECs) in a stretch-dependent manner. MRECs derived from both sexes underwent 5%, 10%, or 15% uniaxial cyclical stretch, and immunological synapse interface proteins were determined by immunofluorescence microscopy, immunoblot analysis, and RNA sequencing. We found that increased endothelial mechanical stretch conditions promoted downregulation of MHC I in male MRECs but upregulation in female MRECs. Moreover, MHC II was upregulated by mechanical stretch in both male and female MRECs, whereas CD86 and CD70 were regulated in a sex-dependent manner. By bulk RNA sequencing, we found that increased mechanical endothelial cell stretch promoted differential gene expression of key antigen processing and presentation genes in female MRECs, demonstrating that females have upregulation of key antigen presentation pathways. Taken together, our data demonstrate that mechanical endothelial stretch regulates endothelial activation and immunological synapse interface formation in renal endothelial cells in a sex-dependent manner.NEW & NOTEWORTHY Endothelial cells contribute to the development of renal inflammation and have the unique ability to express antigen presentation proteins. Whether increased endothelial mechanical stretch regulates immunological synapse interface proteins remains unknown. We found that antigen presentation proteins and costimulatory proteins on renal endothelial cells are modulated by mechanical stretch in a sex-dependent manner. Our data provide novel insights into the sex-dependent ability of renal endothelial cells to present antigens in response to endothelial mechanical stimuli.
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Affiliation(s)
- C Alex Colvert
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Kennedy P Hawkins
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Marharyta Semenikhina
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Mariia Stefanenko
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Olesia Pavlykivska
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Jim C Oates
- Division of Rheumatology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina, United States
| | - Kristine Y DeLeon-Pennell
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina, United States
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Oleg Palygin
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Justin P Van Beusecum
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina, United States
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Boeckhaus J, Mohr L, Dihazi H, Tönshoff B, Weber LT, Pape L, Latta K, Fehrenbach H, Lange-Sperandio B, Kettwig M, Staude H, König S, John-Kroegel U, Gellermann J, Hoppe B, Galiano M, Haffner D, Rhode H, Gross O. Ratio of Urinary Proteins to Albumin Excretion Shifts Substantially during Progression of the Podocytopathy Alport Syndrome, and Spot Urine Is a Reliable Method to Detect These Pathologic Changes. Cells 2023; 12:cells12091333. [PMID: 37174733 PMCID: PMC10177071 DOI: 10.3390/cells12091333] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 04/12/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023] Open
Abstract
The urinary albumin- and protein-to-creatinine ratios (UACR and UPCR, respectively) are key endpoints in most clinical trials assessing risk of progression of chronic kidney disease (CKD). For the first time, the current study compares the UACR versus the UPCR head-to-head at early stages of CKD, taking use of the hereditary podocytopathy Alport syndrome (AS) as a model disease for any CKD. Urine samples originated from the prospective randomized, controlled EARLY PRO-TECT Alport trial (NCT01485978). Urine samples from 47 children with confirmed diagnoses of AS at very early stages of CKD were divided according to the current stage of AS: stage 0 (UACR < 30 mg/g), stage 1 (30-300 mg/g) or stage 2 (>300 mg/g). The range of estimated glomerular filtration rate was 75-187.6 mL/min. The mean age was 10.4 ± 4.5 years. In children at stage 0, proteinuria in spot urine, confirmed in 24 h urine, was almost ten times higher than albuminuria (106.4 ± 42.2 vs. 12.5 ± 9.7; p < 0.05); it was "only" about three times higher in stage 1 (328.5 ± 210.1 vs. 132.3 ± 80.5; p < 0.05) and almost equal in stage 2 (1481.9 ± 983.4 vs. 1109.7 ± 873.6; p = 0.36). In 17 children, UACRs and UPCRs were measured simultaneously in 24 h urine and spot urine in the same study visit. Interestingly, the UACR (and UPCR) in 24 h urine vs. in spot urine varied by less than 10% (266.8 ± 426.4 vs. 291.2 ± 530.2). In conclusion, our study provides the first evidence that in patients with normal glomerular filtration rate (GFR) and low amounts of albuminuria, especially in children with podocytopathies such as AS, measuring the UACR and UPCR in spot urine is a reliable and convenient alternative to 24 h urine collection. Our study advocates both the UACR and the UPCR as relevant diagnostic biomarkers in future clinical trials in children with glomerular diseases because the UPCR seems to be a very significant parameter at very early stages of podocytopathies. The German Federal Ministry of Education and Research funded this trial (01KG1104).
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Affiliation(s)
- Jan Boeckhaus
- Clinic for Nephrology and Rheumatology, University Medical Center Goettingen, 37075 Goettingen, Germany
| | - Lea Mohr
- Clinic for Nephrology and Rheumatology, University Medical Center Goettingen, 37075 Goettingen, Germany
| | - Hassan Dihazi
- Clinic for Nephrology and Rheumatology, University Medical Center Goettingen, 37075 Goettingen, Germany
| | - Burkhard Tönshoff
- Department of Pediatrics I, University Children's Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Lutz T Weber
- Pediatric Nephrology, Children's and Adolescents' Hospital, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany
| | - Lars Pape
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Hannover Medical School, 30625 Hannover, Germany
- Department of Pediatrics II, University Childrens' Hospital, University of Duisburg-Essen, 45147 Essen, Germany
| | - Kay Latta
- Clementine Kinderhospital Frankfurt, 60316 Frankfurt, Germany
| | - Henry Fehrenbach
- Pediatric Nephrology, Children's Hospital, 87700 Memmingen, Germany
| | | | - Matthias Kettwig
- Clinic of Pediatrics and Adolescent Medicine, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Hagen Staude
- Pediatric Nephrology, University Children's Hospital Rostock, 18057 Rostock, Germany
| | - Sabine König
- University Children's Hospital Münster, 48149 Münster, Germany
| | - Ulrike John-Kroegel
- Division of Pediatric Nephrology, University Children's Hospital, 07743 Jena, Germany
| | - Jutta Gellermann
- Pediatric Nephrology, Charité Children's Hospital, 10117 Berlin, Germany
| | - Bernd Hoppe
- Division of Pediatric Nephrology, Department of Pediatrics, University of Bonn, 53121 Bonn, Germany
| | - Matthias Galiano
- Department of Pediatrics and Adolescent Medicine, University Hospital, Friedrich-Alexander-University Erlangen, 91054 Erlangen, Germany
| | - Dieter Haffner
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Hannover Medical School, 30625 Hannover, Germany
| | - Heidrun Rhode
- Department of Internal Medicine I, Cardiology, Angiology, Intensive Medical Care, University Hospital Jena, Am Klinikum 1, 07747 Jena, Germany
| | - Oliver Gross
- Clinic for Nephrology and Rheumatology, University Medical Center Goettingen, 37075 Goettingen, Germany
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10
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Xu P, Zhang B, Luo Q, Song G. Mechanical stretch promotes tenocyte migration via chromatin remodeling-mediated nuclear morphology changes. Wound Repair Regen 2023; 31:410-414. [PMID: 36992651 DOI: 10.1111/wrr.13080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/01/2023] [Accepted: 03/13/2023] [Indexed: 03/31/2023]
Abstract
Wound healing and function recovery of injured tendons is still a big challenge for orthopaedic surgery. Evidence in clinic shows that early controlled motion has significant favorable effects on tendon healing, however, the mechanisms involved in are not fully understood. In the present study, it was shown that an appropriate mechanical stretch (10% strain, 0.5 Hz for 1 h) evidently promotes rat tenocyte migration and nuclear morphology changes. The farther research discovered that mechanical stretch had no effect on Lamin A/C expression, but it could promote chromatin decondensation. Moreover, the histone modification plays an important role in mechanical stretch-mediated chromatin decondensation. Inhibition histone modification could inhibit mechanical stretch-promoted nuclear morphology changes and tenocyte migration. These results indicating that mechanical stretch may promote tenocyte migration via chromatin remodeling-mediated nuclear morphology changes, which contribute to a better understanding of the role of mechanical stretch on tenocyte migration and repair of injured tendon. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Pu Xu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, People's Republic of China
| | - Bingyu Zhang
- Chongqing Engineering Research Center of Medical Electronics and Information Technology, Chongqing University of Posts and Telecommunications, Chongqing, 400065, People's Republic of China
| | - Qing Luo
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, People's Republic of China
| | - Guanbin Song
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, People's Republic of China
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11
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Watson MC, Williams C, Wang RM, Perreault LR, Sullivan KE, Stoppel WL, Black LD. Extracellular matrix and cyclic stretch alter fetal cardiomyocyte proliferation and maturation in a rodent model of heart hypoplasia. Front Cardiovasc Med 2022; 9:993310. [PMID: 36518682 PMCID: PMC9744115 DOI: 10.3389/fcvm.2022.993310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 10/10/2022] [Indexed: 01/22/2024] Open
Abstract
Introduction Birth defects, particularly those that affect development of the heart, are a leading cause of morbidity and mortality in infants and young children. Babies born with heart hypoplasia (heart hypoplasia) disorders often have a poor prognosis. It remains unclear whether cardiomyocytes from hypoplastic hearts retain the potential to recover growth, although this knowledge would be beneficial for developing therapies for heart hypoplasia disorders. The objective of this study was to determine the proliferation and maturation potential of cardiomyocytes from hypoplastic hearts and whether these behaviors are influenced by biochemical signaling from the extracellular matrix (ECM) and cyclic mechanical stretch. Method Congenital diaphragmatic hernia (CDH)-associated heart hypoplasia was induced in rat fetuses by maternal exposure to nitrofen. Hearts were isolated from embryonic day 21 nitrofen-treated fetuses positive for CDH (CDH+) and from fetuses without nitrofen administration during gestation. Results and discussion CDH+ hearts were smaller and had decreased myocardial proliferation, along with evidence of decreased maturity compared to healthy hearts. In culture, CDH+ cardiomyocytes remained immature and demonstrated increased proliferative capacity compared to their healthy counterparts. Culture on ECM derived from CDH+ hearts led to a significant reduction in proliferation for both CDH+ and healthy cardiomyocytes. Healthy cardiomyocytes were dosed with exogenous nitrofen to examine whether nitrofen may have an aberrant effect on the proliferative ability of cardiomyocyte, yet no significant change in proliferation was observed. When subjected to stretch, CDH+ cardiomyocytes underwent lengthening of sarcomeres while healthy cardiomyocyte sarcomeres were unaffected. Taken together, our results suggest that alterations to environmental cues such as ECM and stretch may be important factors in the pathological progression of heart hypoplasia.
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Affiliation(s)
- Matthew C. Watson
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
- Department of Mechanical Engineering, Tufts University, Medford, MA, United States
| | - Corin Williams
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
| | - Raymond M. Wang
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
| | - Luke R. Perreault
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
| | - Kelly E. Sullivan
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
| | - Whitney L. Stoppel
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
| | - Lauren D. Black
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
- Cellular, Molecular, and Developmental Biology Program, Sackler School for Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, MA, United States
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12
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Sun Y, Xu L, Li Y, Lin J, Li H, Gao Y, Huang X, Zhu H, Zhang Y, Wei K, Yang Y, Wu B, Zhang L, Li Q, Liu C. Single-Cell Transcriptomics Uncover Key Regulators of Skin Regeneration in Human Long-Term Mechanical Stretch-Mediated Expansion Therapy. Front Cell Dev Biol 2022; 10:865983. [PMID: 35712657 PMCID: PMC9195629 DOI: 10.3389/fcell.2022.865983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 04/13/2022] [Indexed: 11/18/2022] Open
Abstract
Tissue expansion is a commonly performed therapy to grow extra skin invivo for reconstruction. While mechanical stretch-induced epidermal changes have been extensively studied in rodents and cell culture, little is known about the mechanobiology of the human epidermis in vivo. Here, we employed single-cell RNA sequencing to interrogate the changes in the human epidermis during long-term tissue expansion therapy in clinical settings. We also verified the main findings at the protein level by immunofluorescence analysis of independent clinical samples. Our data show that the expanding human skin epidermis maintained a cellular composition and lineage trajectory that are similar to its non-expanding neighbor, suggesting the cellular heterogeneity of long-term expanded samples differs from the early response to the expansion. Also, a decrease in proliferative cells due to the decayed regenerative competency was detected. On the other hand, profound transcriptional changes are detected for epidermal stem cells in the expanding skin versus their non-expanding peers. These include significantly enriched signatures of C-FOS, EMT, and mTOR pathways and upregulation of AREG and SERPINB2 genes. CellChat associated ligand-receptor pairs and signaling pathways were revealed. Together, our data present a single-cell atlas of human epidermal changes in long-term tissue expansion therapy, suggesting that transcriptional change in epidermal stem cells is the major mechanism underlying long-term human skin expansion therapy. We also identified novel therapeutic targets to promote human skin expansion efficiency in the future.
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Affiliation(s)
- Yidan Sun
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Luwen Xu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yin Li
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Jian Lin
- Department of Orthopedics, Shanghai Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haizhou Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yashan Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaolu Huang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hainan Zhu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yingfan Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kunchen Wei
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yali Yang
- Department of Dermatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Laser Cosmetology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Baojin Wu
- Department of Plastic Surgery, Shanghai Huashan Hospital, Fudan University School of Medicine, Shanghai, China
| | - Liang Zhang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Caiyue Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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13
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Abstract
BACKGROUND Mechanical forces play crucial roles in neointimal hyperplasia after vein grafting; yet, our understanding of their influences on vascular smooth muscle cell (VSMC) activation remains rudimentary. METHODS A cuff mouse model was used to study vein graft hyperplasia. Fifteen percent to 1 Hz uniaxial cyclic stretch (arterial strain), 5% to 1 Hz uniaxial cyclic stretch or a static condition (venous strain) were applied to the cultured VSMCs. Metabolomics analysis, cell proliferation and migration assays, immunoblotting, co-immunoprecipitation, mutagenesis, pull-down and surface plasmon resonance assays were employed to elucidate the potential molecular mechanisms. RESULTS RNA-sequencing in vein grafts and the controls identified changes in metabolic pathways and downregulation of mitochondrial protein MFN2 (mitofusin 2) in the vein grafts. Exposure of VSMCs to 15% stretch resulted in MFN2 downregulation, mitochondrial fragmentation, metabolic shift from mitochondrial oxidative phosphorylation to glycolysis, and cell proliferation and migration, as compared with that to a static condition or 5% stretch. Metabolomics analysis indicated an increased generation of fructose 1,6-bisphosphate, an intermediate in the glycolytic pathway converted by PFK1 (phosphofructokinase 1) from fructose-6-phosphate, in cells exposed to 15% stretch. Mechanistic study revealed that MFN2 physically interacts through its C-terminus with PFK1. MFN2 knockdown or exposure of cells to 15% stretch promoted stabilization of PFK1, likely through interfering the association between PFK1 and the E3 ubiquitin ligase TRIM21 (E3 ubiquitin ligase tripartite motif [TRIM]-containing protein 21), thus, decreasing the ubiquitin-protease-dependent PFK1 degradation. In addition, study of mechanotransduction utilizing pharmaceutical inhibition indicated that the MFN2 downregulation by 15% stretch was dependent on inactivation of the SP1 (specificity protein 1) and activation of the JNK (c-Jun N-terminal kinase) and ROCK (Rho-associated protein kinase). Adenovirus-mediated MFN2 overexpression or pharmaceutical inhibition of PFK1 suppressed the 15% stretch-induced VSMC proliferation and migration and alleviated neointimal hyperplasia in vein grafts. CONCLUSIONS MFN2 is a mechanoresponsive protein that interacts with PFK1 to mediate PFK1 degradation and therefore suppresses glycolysis in VSMCs.
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Affiliation(s)
- Yuanjun Tang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,(Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China (Y.T., Y.J., L.F., H.L., Y.Z., Y.L., J. Zhu, J. Zhou).,National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou).,Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, China (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou)
| | - Yiting Jia
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,(Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China (Y.T., Y.J., L.F., H.L., Y.Z., Y.L., J. Zhu, J. Zhou)
| | - Linwei Fan
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,(Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China (Y.T., Y.J., L.F., H.L., Y.Z., Y.L., J. Zhu, J. Zhou).,National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou).,Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, China (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou)
| | - Han Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,(Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China (Y.T., Y.J., L.F., H.L., Y.Z., Y.L., J. Zhu, J. Zhou).,National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou).,Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, China (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou)
| | - Yuan Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China (Y.T., Y.J., L.F., H.L., Y.Z., Y.L., J. Zhu, J. Zhou).,Department of Biomedical Informatics, School of Basic Medical Sciences, Peking University, Beijing, China (Y.Z.)
| | - Miao Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. (M.W.).,Clinical Pharmacology Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. (M.W.)
| | - Yuefeng Liu
- (Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China (Y.T., Y.J., L.F., H.L., Y.Z., Y.L., J. Zhu, J. Zhou).,National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou).,Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, China (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou)
| | - Juanjuan Zhu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,(Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China (Y.T., Y.J., L.F., H.L., Y.Z., Y.L., J. Zhu, J. Zhou).,National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou).,Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, China (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou)
| | - Wei Pang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,(Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.)
| | - Jing Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,(Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, China. (Y.T., Y.J., L.F., H.L., Y.L., J.Z., W.P., J.Z.).,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China (Y.T., Y.J., L.F., H.L., Y.Z., Y.L., J. Zhu, J. Zhou).,National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou).,Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, China (Y.T., L.F., H.L., Y.L., J. Zhu, J. Zhou)
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14
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Man K, Liu J, Phan KM, Wang K, Lee JY, Sun X, Story M, Saha D, Liao J, Sadat H, Yang Y. Dimensionality-Dependent Mechanical Stretch Regulation of Cell Behavior. ACS Appl Mater Interfaces 2022; 14:17081-17092. [PMID: 35380801 DOI: 10.1021/acsami.2c01266] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A variety of cells are subject to mechanical stretch in vivo, which plays a critical role in the function and homeostasis of cells, tissues, and organs. Deviations from the physiologically relevant mechanical stretch are often associated with organ dysfunction and various diseases. Although mechanical stretch is provided in some in vitro cell culture models, the effects of stretch dimensionality on cells are often overlooked and it remains unclear whether and how stretch dimensionality affects cell behavior. Here we develop cell culture platforms that provide 1-D uniaxial, 2-D circumferential, or 3-D radial mechanical stretches, which recapitulate the three major types of mechanical stretches that cells experience in vivo. We investigate the behavior of human microvascular endothelial cells and human alveolar epithelial cells cultured on these platforms, showing that the mechanical stretch influences cell morphology and cell-cell and cell-substrate interactions in a stretch dimensionality-dependent manner. Furthermore, the endothelial and epithelial cells are sensitive to the physiologically relevant 2-D and 3-D stretches, respectively, which could promote the formation of endothelium and epithelium. This study underscores the importance of recreating the physiologically relevant mechanical stretch in the development of in vitro tissue/organ models.
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Affiliation(s)
- Kun Man
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Jiafeng Liu
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Khang Minh Phan
- Department of Mechanical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Kai Wang
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Jung Yeon Lee
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Xiankai Sun
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Michael Story
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Debabrata Saha
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Jun Liao
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, United States
| | - Hamid Sadat
- Department of Mechanical Engineering, University of North Texas, Denton, Texas 76207, United States
| | - Yong Yang
- Department of Biomedical Engineering, University of North Texas, Denton, Texas 76207, United States
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15
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Haryono A, Ikeda K, Nugroho DB, Ogata T, Tsuji Y, Matoba S, Moriwaki K, Kitagawa H, Igarashi M, Hirata KI, Emoto N. ChGn-2 Plays a Cardioprotective Role in Heart Failure Caused by Acute Pressure Overload. J Am Heart Assoc 2022; 11:e023401. [PMID: 35322673 PMCID: PMC9075488 DOI: 10.1161/jaha.121.023401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Cardiac extracellular matrix is critically involved in cardiac homeostasis, and accumulation of chondroitin sulfate glycosaminoglycans (CS-GAGs) was previously shown to exacerbate heart failure by augmenting inflammation and fibrosis at the chronic phase. However, the mechanism by which CS-GAGs affect cardiac functions remains unclear, especially at the acute phase. Methods and Results We explored a role of CS-GAG in heart failure using mice with target deletion of ChGn-2 (chondroitin sulfate N-acetylgalactosaminyltransferase-2) that elongates CS chains of glycosaminoglycans. Heart failure was induced by transverse aortic constriction in mice. The role of CS-GAG derived from cardiac fibroblasts in cardiomyocyte death was analyzed. Cardiac fibroblasts were subjected to cyclic mechanical stretch that mimics increased workload in the heart. Significant CS-GAGs accumulation was detected in the heart of wild-type mice after transverse aortic constriction, which was substantially reduced in ChGn-2-/- mice. Loss of ChGn-2 deteriorated the cardiac dysfunction caused by pressure overload, accompanied by augmented cardiac hypertrophy and increased cardiomyocyte apoptosis. Cyclic mechanical stretch increased ChGn-2 expression and enhanced glycosaminoglycan production in cardiac fibroblasts. Conditioned medium derived from the stretched cardiac fibroblasts showed cardioprotective effects, which was abolished by CS-GAGs degradation. We found that CS-GAGs elicits cardioprotective effects via dual pathway; direct pathway through interaction with CD44, and indirect pathway through binding to and activating insulin-like growth factor-1. Conclusions Our data revealed the cardioprotective effects of CS-GAGs; therefore, CS-GAGs may play biphasic role in the development of heart failure; cardioprotective role at acute phase despite its possible unfavorable role in the advanced phase.
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Affiliation(s)
- Andreas Haryono
- Division of Cardiovascular Medicine Department of Internal Medicine Kobe University Graduate School of Medicine Kobe Japan.,Laboratory of Clinical Pharmaceutical Science Kobe Pharmaceutical University Kobe Japan
| | - Koji Ikeda
- Laboratory of Clinical Pharmaceutical Science Kobe Pharmaceutical University Kobe Japan.,Department of Epidemiology for Longevity and Regional Health Kyoto Prefectural University of Medicine Kyoto Japan.,Department of Cardiology Kyoto Prefectural University of Medicine Kyoto Japan
| | - Dhite Bayu Nugroho
- Department of Internal Medicine Faculty of Medicine, Public Health, and Nursing Gadjah Mada University Indonesia
| | - Takehiro Ogata
- Department of Pathology and Cell Regulation Kyoto Prefectural University of Medicine Kyoto Japan
| | - Yumika Tsuji
- Department of Cardiology Kyoto Prefectural University of Medicine Kyoto Japan
| | - Satoaki Matoba
- Department of Cardiology Kyoto Prefectural University of Medicine Kyoto Japan
| | - Kensuke Moriwaki
- Comprehensive Unit for Health Economic Evidence Review and Decision Support (CHEERS) Research Organization of Science and TechnologyRitsumeikan University Kyoto Japan
| | - Hiroshi Kitagawa
- Laboratory of Biochemistry Kobe Pharmaceutical University Kobe Japan
| | - Michihiro Igarashi
- Department of Neurochemistry and Molecular Cell Biology Graduate School of Medical and Dental Sciences and Trans-disciplinary Program Niigata University Niigata Japan
| | - Ken-Ichi Hirata
- Division of Cardiovascular Medicine Department of Internal Medicine Kobe University Graduate School of Medicine Kobe Japan
| | - Noriaki Emoto
- Division of Cardiovascular Medicine Department of Internal Medicine Kobe University Graduate School of Medicine Kobe Japan.,Laboratory of Clinical Pharmaceutical Science Kobe Pharmaceutical University Kobe Japan
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Wang X, Liang X, Zhou L, Liu S, Fang Z, Hu C, Hou Y, Guo Z. Yes-associated protein reacts differently in vascular smooth muscle cells under different intensities of mechanical stretch. Aging (Albany NY) 2022; 14:286-96. [PMID: 34983026 PMCID: PMC8791225 DOI: 10.18632/aging.203768] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 10/18/2021] [Indexed: 11/25/2022]
Abstract
Vascular smooth muscle cells (VSMCs) are stromal cells of the vascular wall and are continually exposed to mechanical signals. The loss of VSMCs is closely related to the occurrence of many vascular diseases, such as aortic aneurysms and aortic dissection. The proliferation and apoptosis of VSMCs are mechanically stimulated. Yes-associated protein (YAP), one of the core components of the Hippo pathway, plays a key role in the response of VSMCs to mechanical signals. In this study, we tested the impact of different intensities of mechanical stretch on the proliferation and apoptosis of VSMCs, as well as YAP. We tested VSMCs’ proliferation and apoptosis and YAP reaction via immunocytochemistry, western blotting, CCK-8 and flow cytometric analysis. We found that 10% elongation could increase the phosphorylation of YAP and prevent it from entering the nucleus, as well as inhibit cell proliferation and promote apoptosis. However, 15% elongation reduced YAP phosphorylation and promoted its nuclear entry, thereby promoting cell proliferation and inhibiting apoptosis. Accordingly, YAP knockdown suppressed the phenotype of VMSCs induced by 15% elongation. Taken together, YAP regulates proliferation and apoptosis of VSMCs differently under different intensity of mechanical stretch. Mechanical stretch with appropriate intensity can promote the proliferation and inhibit apoptosis of VSMCs by activating YAP.
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17
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Jiang H, Gao J, Zhang X, Guo N. Composite Micro-Nanoarchitectonics of MMT-SiO 2: Space Charge Characteristics under Tensile State. Polymers (Basel) 2021; 13:polym13244354. [PMID: 34960908 PMCID: PMC8707286 DOI: 10.3390/polym13244354] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/30/2021] [Accepted: 12/03/2021] [Indexed: 11/25/2022] Open
Abstract
Low density polyethylene (LDPE) is a good insulating material which is widely used in cable materials due to its excellent insulation and processability. However, in the DC high voltage environment, pure polyethylene materials still face many problems, the most serious of which is space charge accumulation. The cable will inevitably be subjected to tensile stress during production, installation and operation. Therefore, it is of great significance to study the effect of stretching on the microstructure and space charge characteristics for polymers and their composites. In this paper, MMT/LDPE micro-composites, SiO2/LDPE nano-composites and MMT-SiO2/LDPE micro-nano-composites were prepared by melt blending. Mechanical stretching was carried out on pure LDPE materials and the above three kinds of composite materials. Each material was stretched according to four stretching ratios, which are 0%, 5%, 10% and 20%. The crystal morphology was observed by polarizing microscope (PLM), the crystallization perfection was tested by differential scanning calorimetry (DSC), and the space charge distribution inside each sample was measured by pulsed electro-acoustic (PEA) method. At the same time, the average charge density and apparent charge mobility for samples during depolarization were calculated and analyzed. The experimental results show that when the pure low density polyethylene sample is not stretched, its crystal structure is loose. Tensile stress can make the loose molecular chains align in LDPE and improve its crystalline structure, which is helpful to restrain the accumulation of space charge inside the sample. For MMT/LDPE, SiO2/LDPE and MMT-SiO2/LDPE composites, their internal crystal structure is compact. Stretching will destroy their original crystal structure at first, and then disorder molecular chains inside the three composite materials. With the increase of stretching ratio, the molecular chains begin to orient along the direction of force, the crystallization tends to be perfect gradually, and the space charge accumulation in samples also decreases. From the calculation results of apparent charge mobility for each sample, with the increase of stretching ratio, the trap depth and trap density inside samples firstly increased and then decreased.
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Affiliation(s)
| | | | | | - Ning Guo
- Correspondence: (J.G.); (X.Z.); (N.G.)
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18
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Xu K, Liu X, Li X, Yin J, Wei P, Qian J, Sun J. Effect of Electrical and Electromechanical Stimulation on PC12 Cell Proliferation and Axon Outgrowth. Front Bioeng Biotechnol 2021; 9:757906. [PMID: 34746110 PMCID: PMC8566739 DOI: 10.3389/fbioe.2021.757906] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 09/15/2021] [Indexed: 11/13/2022] Open
Abstract
Peripheral nerve injuries have become a common clinical disease with poor prognosis and complicated treatments. The development of tissue engineering pointed a promising direction to produce nerve conduits for nerve regeneration. Electrical and mechanical stimulations have been incorporated with tissue engineering, since such external stimulations could promote nerve cell proliferation, migration and differentiation. However, the combination of electrical and mechanical stimulations (electromechanical stimulation) and its effects on neuron proliferation and axon outgrowth have been rarely investigated. Herein, silver nanowires (AgNWs) embedded polydimethylsiloxane (PDMS) electrodes were developed to study the effects of electromechanical stimulation on rat pheochromocytoma cells (PC12 cells) behaviors. AgNWs/PDMS electrodes demonstrated good biocompatibility and established a stable electric field during mechanical stretching. PC12 cells showed enhanced proliferation rate and axon outgrowth under electrical stimulation alone, and the cell number significantly increased with higher electrical stimulation intensity. The involvement of mechanical stretching in electrical stimulation reduced the cell proliferation rate and axon outgrowth, compared with the case of electrical stimulation alone. Interestingly, the cellular axons outgrowth was found to depend on the stretching direction, where the axons prefer to align perpendicularly to the stretch direction. These results suggested that AgNWs/PDMS electrodes provide an in vitro platform to investigate the effects of electromechanical stimulation on nerve cell behaviors and can be potentially used for nerve regeneration in the future.
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Affiliation(s)
- Kailei Xu
- Central Laboratory, Ningbo First Hospital, Ningbo, China
- The State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
| | - Xixia Liu
- The State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
- School of Mechanical Engineering, Guizhou University, Guiyang, China
| | - Xiaokeng Li
- The State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
| | - Jun Yin
- The State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
| | - Peng Wei
- Department of Hand and Foot Microsurgery, Ningbo First Hospital, Ningbo, China
| | - Jin Qian
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Department of Engineering Mechanics, Zhejiang University, Hangzhou, China
| | - Jie Sun
- Central Laboratory, Ningbo First Hospital, Ningbo, China
- Department of Neurosurgery, Ningbo First Hospital, Ningbo, China
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19
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Liu W, Xiong S, Zhang Y, Du J, Dong C, Yu Z, Ma X. Transcriptome Profiling Reveals Important Transcription Factors and Biological Processes in Skin Regeneration Mediated by Mechanical Stretch. Front Genet 2021; 12:757350. [PMID: 34659370 PMCID: PMC8511326 DOI: 10.3389/fgene.2021.757350] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 09/14/2021] [Indexed: 01/02/2023] Open
Abstract
Background: Mechanical stretch is utilized to promote skin regeneration during tissue expansion for reconstructive surgery. Although mechanical stretch induces characteristic morphological changes in the skin, the biological processes and molecular mechanisms involved in mechanically induced skin regeneration are not well elucidated. Methods: A male rat scalp expansion model was established and the important biological processes related to mechanical stretch-induced skin regeneration were identified using Gene Ontology (GO) analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis, and gene set enrichment analysis (GSEA). Analysis was also conducted by constructing a protein–protein interaction (PPI) network, identifying key modules and hub genes, determining transcription factor (TF)-mRNA regulatory relationships, and confirming the expression pattern of the TFs and hub genes. Results: We identified nine robust hub genes (CXCL1, NEB, ACTN3, MYOZ1, ACTA1, TNNT3, PYGM, AMPD1, and CKM) that may serve as key molecules in skin growth. These genes were determined to be involved in several important biological processes, including keratinocyte differentiation, cytoskeleton reorganization, chemokine signaling pathway, glycogen metabolism, and voltage-gated ion channel activity. The potentially significant pathways, including the glucagon signaling pathway, the Wnt signaling pathway, and cytokine–cytokine receptor interaction, were distinguished. In addition, we identified six TFs (LEF1, TCF7, HMGA1, TFAP2C, FOSL1, and ELF5) and constructed regulatory TF–mRNA interaction networks. Conclusion: This study generated a comprehensive overview of the gene networks underlying mechanically induced skin regeneration. The functions of these key genes and the pathways in which they participate may reveal new aspects of skin regeneration under mechanical strain. Furthermore, the identified TF regulators can be used as potential candidates for clinical therapeutics for skin pretreatment before reconstructive surgery.
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Affiliation(s)
- Wei Liu
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shaoheng Xiong
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yu Zhang
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jing Du
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Chen Dong
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhou Yu
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xianjie Ma
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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20
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Ren D, Song J, Liu R, Zeng X, Yan X, Zhang Q, Yuan X. Molecular and Biomechanical Adaptations to Mechanical Stretch in Cultured Myotubes. Front Physiol 2021; 12:689492. [PMID: 34408658 PMCID: PMC8365838 DOI: 10.3389/fphys.2021.689492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/29/2021] [Indexed: 11/24/2022] Open
Abstract
Myotubes are mature muscle cells that form the basic structural element of skeletal muscle. When stretching skeletal muscles, myotubes are subjected to passive tension as well. This lead to alterations in myotube cytophysiology, which could be related with muscular biomechanics. During the past decades, much progresses have been made in exploring biomechanical properties of myotubes in vitro. In this review, we integrated the studies focusing on cultured myotubes being mechanically stretched, and classified these studies into several categories: amino acid and glucose uptake, protein turnover, myotube hypertrophy and atrophy, maturation, alignment, secretion of cytokines, cytoskeleton adaption, myotube damage, ion channel activation, and oxidative stress in myotubes. These biomechanical adaptions do not occur independently, but interconnect with each other as part of the systematic mechanoresponse of myotubes. The purpose of this review is to broaden our comprehensions of stretch-induced muscular alterations in cellular and molecular scales, and to point out future challenges and directions in investigating myotube biomechanical manifestations.
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Affiliation(s)
- Dapeng Ren
- Department of Stomatology Medical Center, The Affiliated Hospital of Qingdao University, Qingdao, China.,College of Dentistry, Qingdao University, Qingdao, China
| | - Jing Song
- Department of Stomatology Medical Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ran Liu
- Department of Stomatology Medical Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xuemin Zeng
- Department of Stomatology Medical Center, The Affiliated Hospital of Qingdao University, Qingdao, China.,College of Dentistry, Qingdao University, Qingdao, China
| | - Xiao Yan
- Department of Stomatology Medical Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qiang Zhang
- Department of Stomatology Medical Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiao Yuan
- Department of Stomatology Medical Center, The Affiliated Hospital of Qingdao University, Qingdao, China
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21
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Hollósi A, Pászty K, Kellermayer M, Charras G, Varga A. BRAF Modulates Stretch-Induced Intercellular Gap Formation through Localized Actin Reorganization. Int J Mol Sci 2021; 22:ijms22168989. [PMID: 34445693 PMCID: PMC8396467 DOI: 10.3390/ijms22168989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/17/2021] [Accepted: 08/17/2021] [Indexed: 01/02/2023] Open
Abstract
Mechanical forces acting on cell–cell adhesion modulate the barrier function of endothelial cells. The actively remodeled actin cytoskeleton impinges on cell–cell adhesion to counteract external forces. We applied stress on endothelial monolayers by mechanical stretch to uncover the role of BRAF in the stress-induced response. Control cells responded to external forces by organizing and stabilizing actin cables in the stretched cell junctions. This was accompanied by an increase in intercellular gap formation, which was prevented in BRAF knockdown monolayers. In the absence of BRAF, there was excess stress fiber formation due to the enhanced reorganization of actin fibers. Our findings suggest that stretch-induced intercellular gap formation, leading to a decrease in barrier function of blood vessels, can be reverted by BRAF RNAi. This is important when the endothelium experiences changes in external stresses caused by high blood pressure, leading to edema, or by immune or cancer cells in inflammation or metastasis.
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Affiliation(s)
- Anna Hollósi
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1094 Budapest, Hungary; (A.H.); (K.P.); (M.K.)
| | - Katalin Pászty
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1094 Budapest, Hungary; (A.H.); (K.P.); (M.K.)
| | - Miklós Kellermayer
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1094 Budapest, Hungary; (A.H.); (K.P.); (M.K.)
| | - Guillaume Charras
- London Centre for Nanotechnology, University College London, London WC1H 0AH, UK;
- Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK
| | - Andrea Varga
- Department of Biophysics and Radiation Biology, Semmelweis University, H-1094 Budapest, Hungary; (A.H.); (K.P.); (M.K.)
- Correspondence:
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22
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Song CX, Liu SY, Zhu WT, Xu SY, Ni GX. Excessive mechanical stretch‑mediated osteoblasts promote the catabolism and apoptosis of chondrocytes via the Wnt/β‑catenin signaling pathway. Mol Med Rep 2021; 24:593. [PMID: 34165157 PMCID: PMC8222797 DOI: 10.3892/mmr.2021.12232] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 05/05/2021] [Indexed: 02/05/2023] Open
Abstract
Excessive biomechanical loading is considered an important cause of osteoarthritis. Although the mechanical responses of chondrocytes and osteoblasts have been investigated, their communication during mechanical loading and the underlying molecular mechanisms are not yet fully known. The present study investigated the effects of excessive mechanically stretched osteoblasts on the metabolism and apoptosis of chondrocytes, and also assessed the involvement of the Wnt/β‑catenin signaling pathway. In the present study, rat chondrocytes and osteoblasts were subjected to mechanical tensile strain, and an indirect chondrocyte‑osteoblast co‑culture model was established. Reverse transcription‑quantitative PCR and western blotting were performed to determine the expression levels of genes and proteins of interest. An ELISA was performed to investigate the levels of cytokines, including matrix metalloproteinase (MMP) 13, MMP 3, interleukin‑6 (IL‑6) and prostaglandin E2 (PG E2), released from osteoblasts. Flow cytometry was performed to detect the apoptosis of chondrocytes exposed to stretched osteoblast conditioned culture medium. The levels of MMP 13, IL‑6 and PG E2 increased significantly in the supernatants of stretched osteoblasts compared with the un‑stretched group. By contrast, the mRNA expression levels of Collagen 1a and alkaline phosphatase were significantly decreased in osteoblasts subjected to mechanical stretch compared with the un‑stretched group. The mRNA expression level of Collagen 2a was significantly decreased, whereas the expression levels of MMP 13 and a disintegrin and metalloproteinase with thrombospondin‑like motifs 5 were significantly increased in chondrocytes subjected to mechanical stretch compared with the un‑stretched group. In the co‑culture model, the results indicated that excessive mechanically stretched osteoblasts induced the catabolism and apoptosis of chondrocytes, which was partly inhibited by Wnt inhibitor XAV‑939. The results of the present study demonstrated that excessive mechanical stretch led to chondrocyte degradation and inhibited osteoblast osteogenic differentiation; furthermore, excessive mechanically stretched osteoblasts induced the catabolism and apoptosis of chondrocytes via the Wnt/β‑catenin signaling pathway.
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Affiliation(s)
- Cheng-Xian Song
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
- Department of Rehabilitation Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
| | - Sheng-Yao Liu
- Department of Orthopedics, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510260, P.R. China
| | - Wen-Ting Zhu
- Department of Pharmacy, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
| | - Shao-Yong Xu
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Guo-Xin Ni
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
- School of Sport Medicine and Rehabilitation, Beijing Sport University, Beijing 100084, P.R. China
- Correspondence to: Professor Guo-Xin Ni, School of Sport Medicine and Rehabilitation, Beijing Sport University, 48 Xinxi Road, Haidian, Beijing 100084, P.R. China, E-mail:
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23
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Richfield O, Cortez R, Navar LG. Simulations of increased glomerular capillary wall strain in the 5/6-nephrectomized rat. Microcirculation 2021; 28:e12721. [PMID: 34192389 PMCID: PMC9285434 DOI: 10.1111/micc.12721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/27/2021] [Accepted: 06/22/2021] [Indexed: 12/21/2022]
Abstract
Objective Chronic glomerular hypertension is associated with glomerular injury and sclerosis; however, the mechanism by which increases in pressure damage glomerular podocytes remains unclear. We tested the hypothesis that increases in glomerular pressure may deleteriously affect podocyte structural integrity by increasing the strain of the glomerular capillary walls, and that glomerular capillary wall strain may play a significant role in the perpetuation of glomerular injury in disease states that are associated with glomerular hypertension. Methods We developed an anatomically accurate mathematical model of a compliant, filtering rat glomerulus to quantify the strain of the glomerular capillary walls in a remnant glomerulus of the 5/6‐nephrectomized rat model of chronic kidney disease. In terms of estimating the mechanical stresses and strains in the glomerular capillaries, this mathematical model is a substantial improvement over previous models which do not consider pressure‐induced alterations in glomerular capillary diameters in distributing plasma and erythrocytes throughout the network. Results Using previously reported data from experiments measuring the change of glomerular volume as a function of perfusion pressure, we estimated the Young's modulus of the glomerular capillary walls in both control and 5/6‐nephrectomized conditions. We found that in 5/6‐nephrectomized conditions, the Young's modulus increased to 8.6 MPa from 7.8 MPa in control conditions, but the compliance of the capillaries increased in 5/6‐nephrectomized conditions due to a 23.3% increase in the baseline glomerular capillary diameters. We found that glomerular capillary wall strain was increased approximately threefold in 5/6‐nephrectomized conditions over control, which may deleteriously affect both mesangial cells and podocytes. The magnitudes of strain in model simulations of 5/6‐nephrectomized conditions were consistent with magnitudes of strain that elicit podocyte hypertrophy and actin cytoskeleton reorganization in vitro. Conclusions Our findings indicate that glomerular capillary wall strain may deleteriously affect podocytes directly, as well as act in concert with other mechanical changes and environmental factors inherent to the in vivo setting to potentiate glomerular injury in severe renoprival conditions.
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Affiliation(s)
- Owen Richfield
- Bioinnovation PhD Program, Tulane University, New Orleans, LA, USA.,Department of Physiology, Tulane School of Medicine, New Orleans, LA, USA
| | - Ricardo Cortez
- Department of Mathematics, Tulane University, New Orleans, LA, USA
| | - L Gabriel Navar
- Department of Physiology, Tulane School of Medicine, New Orleans, LA, USA
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24
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Zheng TF, Liu XL, Li X, Wang QQ, Zhao YC, Li X, Li MM, Zhang Y, Zhang M, Zhang WC, Zhang C, Zhang Y, Zhang M. Dickkopf-1 promotes Vascular Smooth Muscle Cell proliferation and migration through upregulating UHRF1 during Cyclic Stretch application. Int J Biol Sci 2021; 17:1234-1249. [PMID: 33867842 PMCID: PMC8040467 DOI: 10.7150/ijbs.56247] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/10/2021] [Indexed: 12/28/2022] Open
Abstract
Dickkopf-1 (DKK1) was recently shown to play an important role in cardiovascular disease. The aim of this work was to assess the role of DKK1 in the regulation of smooth muscle cell function by mechanical stretch and the mechanisms underlying this process. Methods: Wild-type C57BL/6J mice were subjected to sham or abdominal aortic constriction (AAC) surgery. The expression level of DKK1 was examined by immunohistochemical staining and Western blotting. Analyses of DKK1 function in vascular smooth muscle cell (VSMC) proliferation and migration were performed. Transcriptome sequencing analysis was performed to identify the differentially expressed genes and pathways regulated by DKK1. Smooth muscle-specific Dkk1 knockout mice were used to confirm the function of DKK1 in vivo. Chromatin immunoprecipitation (ChIP) was used to confirm DNA-protein interactions. Promoter luciferase analysis was used to detect transcription factor activity. Results: We found that AAC significantly increased DKK1 protein levels in the thoracic aorta and coronary artery in vivo. In vitro, high-level stretch (18%) induced the expression of DKK1 in VSMCs. Knocking down DKK1 inhibited VSMC proliferation and migration under high-level stretch (18%). We identified ubiquitin-like containing PHD and RING finger domains 1 (UHRF1) as a target gene of DKK1. Knockdown of UHRF1 with small interfering RNAs partially reversed the regulatory effect of recombinant DKK1 on VSMCs. Specific deletion of DKK1 in VSMCs was sufficient to attenuate the AAC-induced upregulation of UHRF1, thickening of arterial media and increase in VSMC proliferation. Furthermore, we found that DKK1 regulated UHRF1 expression through the YAP-TEAD pathway. TEAD1 and TEAD4 bound directly to the promoter of UHRF1, and blocking the YAP-TEAD interaction inhibited UHRF1 upregulation due to DKK1. Conclusions: This study reveals that DKK1 mediates the mechanical stretch regulation of smooth muscle cell function by modulating UHRF1 expression through the YAP-TEAD pathway.
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Affiliation(s)
- Teng-Fei Zheng
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Xiao-Lin Liu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Xiao Li
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Qian-Qian Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Ya-Chao Zhao
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Xuan Li
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Meng-Meng Li
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Yu Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Meng Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Wen-Cheng Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Cheng Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Yun Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
| | - Mei Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University,107 Wenhuaxi Road, 250012 Jinan, China
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Liu X, Liu X, Li M, Zhang Y, Chen W, Zhang M, Zhang C, Zhang M. Mechanical Stretch Induces Smooth Muscle Cell Dysfunction by Regulating ACE2 via P38/ATF3 and Post-transcriptional Regulation by miR-421. Front Physiol 2021; 11:540591. [PMID: 33536929 PMCID: PMC7848200 DOI: 10.3389/fphys.2020.540591] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 12/08/2020] [Indexed: 12/25/2022] Open
Abstract
Mechanical stretch promotes deregulation of vascular smooth muscle cell (VSMC) functions during hypertension-induced vascular remodeling. ACE2 has a wide range of cardiovascular and renal protective effects. Loss of ACE2 is associated with cardiovascular disease, but little is known about the regulation of its expression, especially by abnormal mechanical stretch during hypertension. The present study was designed to investigate the contribution of ACE2 to vascular remodeling under mechanical stretch and to assess the possible underlying mechanisms. The abdominal aortic constriction model was established to mimic the environment in vivo. FX-5000T Strain Unit provided mechanical stretch in vitro. Overexpression was used to analyze the role of ACE2 played in the proliferation, migration, apoptosis, and collagen metabolism of the VSMCs. RT-qPCR, Western blot, luciferase assay, and ChIP assay were used to elucidate the molecular mechanism of ACE2 expression regulated by stretch. We found that mechanical stretch modulated the expression of the ACE2/Ang-(1–7) and ACE/AngII axis. ACE2 was mechanically sensitive and was involved in the stretch-induced dysfunction of VSMCs. The p38 MAPK/ATF3 pathway and miR-421 participated in the regulation of ACE2. Thus, ACE2 may contribute to the development of vascular remodeling under conditions of mechanical stretch.
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Affiliation(s)
- Xiaolin Liu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
| | - Xinxin Liu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
| | - Mengmeng Li
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
| | - Yu Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
| | - Weijia Chen
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
| | - Meng Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
| | - Cheng Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
| | - Mei Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, Qilu Hospital of Shandong University, Jinan, China
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26
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Wang D, Cai J, Zeng Z, Gao X, Shao X, Ding Y, Feng X, Jing D. The interactions between mTOR and NF-κB: A novel mechanism mediating mechanical stretch-stimulated osteoblast differentiation. J Cell Physiol 2020; 236:4592-4603. [PMID: 33289098 DOI: 10.1002/jcp.30184] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/14/2020] [Accepted: 11/17/2020] [Indexed: 12/20/2022]
Abstract
Mechanical stretch is known to promote osteoblast differentiation in vitro and accelerate bone regeneration in vivo, whereas the relevant mechanism remains unclear. Recent studies have shown the importance of reciprocal interactions between mammalian target of rapamycin (mTOR) and nuclear factor kappa B (NF-κB; two downstream molecules of Akt) in the regulation of tumor cells. Thus, we hypothesize that mTOR and NF-κB as well as their interconnection play a critical role in mediating stretch-induced osteogenic differentiation in osteoblasts. We herein found that mechanical stretch (10% elongation at six cycles/min) significantly promoted the expression of osteoblast differentiation-related markers (including ALP, BMP2, Col1α, OCN, and Runx2) in osteoblast-like MG-63 cells, accompanied by increased mTOR phosphorylation and NF-κB p65 phosphorylation and nuclear translocation. Blockade of mTOR by antagonist or small interfering RNA suppressed osteogenesis-related gene expression in response to mechanical stretch, whereas inhibition of NF-κB further increased stretch-induced osteoblast differentiation. Moreover, inhibition of mTOR decreased the phosphorylation of NF-κB, and blockade of NF-κB reduced the mTOR activation in MG63 cells under mechanical stretch. Coinhibition of mTOR and NF-κB abolishes the alteration of osteogenic differentiation induced by single mTOR or NF-κB inhibition under mechanical stretch, which is equivalent to the noninhibition level for osteoblasts under mechanical stretch. The expression levels of osteogenic differentiation in osteoblasts after inhibition of Akt were similar to those after co-inhibition of mTOR and NF-κB under mechanical stretch. This study for the first time reveals the reciprocal interconnection between mTOR and NF-κB in osteoblasts under mechanical stretch and indicates that mTOR and NF-κB as well as their interactions play a key role in the regulation of cellular homeostasis of osteoblasts in response to mechanical stretch. These findings are helpful for enriching our basic knowledge of the molecular mechanisms of osteoblast mechanotransduction, and also providing insight into the clinical therapeutic modality associated with mechanical stretch (e.g., distraction osteogenesis).
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Affiliation(s)
- Dan Wang
- Laboratory of Tissue Engineering, Faculty of Life Sciences, Northwest University, Xi'an, China
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Jing Cai
- Department of Diagnostics, College of Basic Medicine, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Zhaobin Zeng
- Department of Stomatology, General Hospital of Northern Theater Command (Formerly General Hospital of Shenyang Military Area), Shenyang, China
| | - Xue Gao
- Laboratory of Tissue Engineering, Faculty of Life Sciences, Northwest University, Xi'an, China
| | - Xi Shao
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Yuanjun Ding
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
| | - Xue Feng
- Department of Cell Biology, School of Medicine, Northwest University, Xi'an, China
| | - Da Jing
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
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Abstract
Cell plasticity is important in development and tissue remodeling. Cells can sense physical and chemical cues from their local microenvironment and transduce the signals into the nucleus to regulate the epigenetic state and gene expression, resulting in a change in cell phenotype. In this review, we highlight the role of mechanical cues in regulating stem cell differentiation and cell reprogramming through the modulation of histone modifications. The effects of various mechanical cues, including matrix stiffness, mechanical stretch, and shear stress, on cell fate during tissue regeneration and remodeling will be discussed. Taken together, recent work demonstrates that the alterations in histone modifications by mechanical stimuli can facilitate epigenetic changes during cell phenotypic switching, which has potential applications in the development of biomaterials and bioreactors for cell engineering.
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Affiliation(s)
- Yang Song
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jennifer Soto
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Song Li
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
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28
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Wei A, Wang Z, Rancu AL, Yang Z, Tan S, Borg TK, Gao BZ. In Vivo-Like Morphology of Intercalated Discs Achieved in a Neonatal Cardiomyocyte Culture Model. Tissue Eng Part A 2020; 26:1209-1221. [PMID: 32515285 PMCID: PMC7699015 DOI: 10.1089/ten.tea.2020.0068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/29/2020] [Indexed: 12/17/2022] Open
Abstract
In vitro cultures to be used in various analytical investigations of cardiomyocyte (CM) growth and function for enhancing insight into physiological and pathological mechanisms should closely express in vivo morphology. The aim of the studies is to explore how to use microfabrication and physical-cue-addition techniques to establish a neonatal rat CM culture model that expresses an end-to-end connected rod shape with in vivo-like intercalated discs (ICDs). Freshly isolated neonatal rat CMs were cultured on microgrooved polydimethylsiloxane substrate. Cell alignment and ICD orientation were evaluated using confocal fluorescence and transmission electron microscopy under various combinations of different culture conditions. Cyclic stretch and blebbistatin tests were conducted to explore mechanical and electrical effects. Laboratory-made MATLAB software was developed to quantify cell alignment and ICD orientation. Our results demonstrate that the mechanical effect associated with the electrical stimulation may contribute to step-like ICD formation viewed from the top. In addition, our study reveals that a suspended elastic substrate that was slack with scattered folds, not taut, enabled CM contraction of equal strength on both apical and basal cell surfaces, allowing the cultured CMs to express a three-dimensional rod shape with disc-like ICDs viewed cross-sectionally. Impact statement In this article, we describe how the tugging forces generated by cardiomyocytes (CMs) facilitate the formation of the morphology of the intercalated discs (ICDs) to achieve mechanoelectrical coupling between CMs. Correspondingly, we report experimental techniques we developed to enable the in vivo-like behavior of the tugging forces to support the development of in vivo-like morphology in ICDs. These techniques will enhance insight into physiological and pathological mechanisms related to the development of tissue-engineered cardiac constructs in various analytical investigations of CM growth and function.
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Affiliation(s)
- Ailin Wei
- Department of Bioengineering, Clemson University, Clemson, South Carolina, USA
| | - Zhonghai Wang
- Department of Bioengineering, Clemson University, Clemson, South Carolina, USA
| | | | - Zongming Yang
- Department of Bioengineering, Clemson University, Clemson, South Carolina, USA
| | - Shenghao Tan
- Department of Bioengineering, Clemson University, Clemson, South Carolina, USA
| | - Thomas Keith Borg
- Department of Regenerative Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Bruce Zhi Gao
- Department of Bioengineering, Clemson University, Clemson, South Carolina, USA
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29
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Del-Canto I, Gómez-Cid L, Hernández-Romero I, Guillem MS, Fernández-Santos ME, Atienza F, Such L, Fernández-Avilés F, Chorro FJ, Climent AM. Ranolazine-Mediated Attenuation of Mechanoelectric Feedback in Atrial Myocyte Monolayers. Front Physiol 2020; 11:922. [PMID: 32848863 PMCID: PMC7417656 DOI: 10.3389/fphys.2020.00922] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 07/09/2020] [Indexed: 12/20/2022] Open
Abstract
Background Mechanical stretch increases Na+ inflow into myocytes, related to mechanisms including stretch-activated channels or Na+/H+ exchanger activation, involving Ca2+ increase that leads to changes in electrophysiological properties favoring arrhythmia induction. Ranolazine is an antianginal drug with confirmed beneficial effects against cardiac arrhythmias associated with the augmentation of INaL current and Ca2+ overload. Objective This study investigates the effects of mechanical stretch on activation patterns in atrial cell monolayers and its pharmacological response to ranolazine. Methods Confluent HL-1 cells were cultured in silicone membrane plates and were stretched to 110% of original length. The characteristics of in vitro fibrillation (dominant frequency, regularity index, density of phase singularities, rotor meandering, and rotor curvature) were analyzed using optical mapping in order to study the mechanoelectric response to stretch under control conditions and ranolazine action. Results HL-1 cell stretch increased fibrillatory dominant frequency (3.65 ± 0.69 vs. 4.35 ± 0.74 Hz, p < 0.01) and activation complexity (1.97 ± 0.45 vs. 2.66 ± 0.58 PS/cm2, p < 0.01) under control conditions. These effects were related to stretch-induced changes affecting the reentrant patterns, comprising a decrease in rotor meandering (0.72 ± 0.12 vs. 0.62 ± 0.12 cm/s, p < 0.001) and an increase in wavefront curvature (4.90 ± 0.42 vs. 5.68 ± 0.40 rad/cm, p < 0.001). Ranolazine reduced stretch-induced effects, attenuating the activation rate increment (12.8% vs. 19.7%, p < 0.01) and maintaining activation complexity—both parameters being lower during stretch than under control conditions. Moreover, under baseline conditions, ranolazine slowed and regularized the activation patterns (3.04 ± 0.61 vs. 3.65 ± 0.69 Hz, p < 0.01). Conclusion Ranolazine attenuates the modifications of activation patterns induced by mechanical stretch in atrial myocyte monolayers.
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Affiliation(s)
- Irene Del-Canto
- INCLIVA Health Research Institute, Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares, Valencia, Spain.,Department of Electronic Engineering, Universitat Politècnica de València, Valencia, Spain
| | - Lidia Gómez-Cid
- Department of Cardiology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares, Madrid, Spain
| | | | - María S Guillem
- ITACA Institute, Universitat Politècnica de València, Valencia, Spain
| | - María Eugenia Fernández-Santos
- Department of Cardiology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares, Madrid, Spain
| | - Felipe Atienza
- Department of Cardiology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares, Madrid, Spain
| | - Luis Such
- INCLIVA Health Research Institute, Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares, Valencia, Spain.,Department of Physiology, Universitat de València Estudi General, Valencia, Spain
| | - Francisco Fernández-Avilés
- Department of Cardiology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares, Madrid, Spain
| | - Francisco J Chorro
- INCLIVA Health Research Institute, Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares, Valencia, Spain.,Department of Cardiology, Hospital Clínico Universitario de Valencia, INCLIVA, Valencia, Spain
| | - Andreu M Climent
- Department of Cardiology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares, Madrid, Spain.,ITACA Institute, Universitat Politècnica de València, Valencia, Spain
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30
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Xie Y, Qian Y, Wang Y, Liu K, Li X. Mechanical stretch and LPS affect the proliferation, extracellular matrix remodeling and viscoelasticity of lung fibroblasts. Exp Ther Med 2020; 20:5. [PMID: 32934670 PMCID: PMC7471876 DOI: 10.3892/etm.2020.9133] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 02/18/2020] [Indexed: 02/07/2023] Open
Abstract
The present study aimed to investigate the effects of mechanical stretch and lipopolysaccharides (LPS) on the expression of transforming growth factor-β1 (TGF-β1) and collagen and viscoelasticity in human embryonic MRC-5 lung fibroblasts cultured in vitro and to assess the mechanisms of ARDS-associated ventilator-induced lung injury using an in vitro model. Human embryonic MRC-5 lung fibroblasts were treated with different concentrations of LPS to establish an acute respiratory distress syndrome (ARDS) cell injury model, followed by further culture under different mechanical stretch amplitudes using the Flexcell system to establish a cellular mechanical damage model. The proliferation of MRC-5 cells and the protein and gene expression levels of TGF-β1 and collagen were detected by flow cytometry, ELISA and reverse transcription-quantitative PCR, respectively. As the concentration of LPS increased, the proliferation activity of MRC-5 cells gradually decreased. Low concentrations of LPS led to upregulation of the secretion levels of TGF-β1 and collagen I and the expression of their mRNA, TGF-β1 mRNA and collagen type 1, α1. Conversely, high concentrations of LPS reduced TGF-β1 and collagen I levels and their gene expression. Mechanical stimulation with a stretch of 5% increased the cell proliferation activity; however, it had no significant effect on the expression levels of TGF-β1 and collagen. Mechanical stimulation with a stretching force of 10% inhibited the cell proliferation but increased the expression levels of TGF-β1 and collagen I. A higher mechanical stimulation (15 and 20%) had a significantly greater effect. Mechanical stretch and LPS stimulation led to changes in the structure and viscoelastic behavior of human embryonic MRC-5 lung fibroblasts. In terms of cell function, mechanical stretch may cause an increase in the expression of TGF-β1 in MRC-5 cells, in turn affecting the transcription and translation of collagen genes. This present study provides provides cell-level evidence for understand the mechanisms of action behind the ARDS ventilator-induced lung injury and lung structural remodeling.
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Affiliation(s)
- Yongpeng Xie
- Department of Critical Care Medicine, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu 222000, P.R. China
| | - Ying Qian
- Department of Critical Care Medicine, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu 222000, P.R. China
| | - Yanli Wang
- Department of Emergency Medicine, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu 222000, P.R. China
| | - Kexi Liu
- Department of Critical Care Medicine, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu 222000, P.R. China
| | - Xiaomin Li
- Department of Emergency Medicine, Lianyungang Clinical College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu 222000, P.R. China
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31
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Djalinac N, Ljubojevic-Holzer S, Matzer I, Kolesnik E, Jandl K, Lohberger B, Rainer P, Heinemann A, Sedej S, von Lewinski D, Bisping E. The role of stretch, tachycardia and sodium-calcium exchanger in induction of early cardiac remodelling. J Cell Mol Med 2020; 24:8732-8743. [PMID: 32573098 PMCID: PMC7412684 DOI: 10.1111/jcmm.15504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 05/20/2020] [Accepted: 05/24/2020] [Indexed: 12/14/2022] Open
Abstract
Stretch and tachycardia are common triggers for cardiac remodelling in various conditions, but a comparative characterization of their role in the excitation‐transcription coupling (ETC) and early regulation of gene expression and structural changes is lacking. Here, we show that stretch and tachycardia directly induced hypertrophy of neonatal rat cardiac myocytes and also of non‐myocytes. Both triggers induced similar patterns of hypertrophy but had largely distinct gene expression profiles. ACTA1 served as good hypertrophy marker upon stretch, while RCAN1 was found increased in response to tachycardia in a rate‐dependent fashion. Mechanistically, several calcium‐handling proteins, including the sodium‐calcium exchanger (NCX), contributed to ETC. Phosphorylation of the calcium/calmodulin‐dependent protein kinase II (CaMKII) was elevated and occurred downstream of NCX activation upon tachycardia, but not stretch. Microarray profiling revealed that stretch and tachycardia regulated around 33% and 20% genes in a NCX‐dependent manner, respectively. In conclusion, our data show that hypertrophy induction by stretch and tachycardia is associated with different gene expression profiles with a significant contribution of the NCX.
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Affiliation(s)
- Natasa Djalinac
- Department of Cardiology, Medical University of Graz, Graz, Austria
| | | | - Ingrid Matzer
- Department of Cardiology, Medical University of Graz, Graz, Austria
| | - Ewald Kolesnik
- Department of Cardiology, Medical University of Graz, Graz, Austria
| | - Katharina Jandl
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Graz, Austria.,Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Birgit Lohberger
- Department of Orthopedics and Trauma, Medical University of Graz, Graz, Austria
| | - Peter Rainer
- Department of Cardiology, Medical University of Graz, Graz, Austria
| | - Akos Heinemann
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Graz, Austria
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, Graz, Austria
| | | | - Egbert Bisping
- Department of Cardiology, Medical University of Graz, Graz, Austria
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32
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Yan F, Gao M, Gong Y, Zhang L, Ai N, Zhang J, Chai Y, Wu S, Liu Q, Jiang X, Deng H, Liu W. Proteomic analysis of underlying apoptosis mechanisms of human retinal pigment epithelial ARPE-19 cells in response to mechanical stretch. J Cell Physiol 2020; 235:7604-7619. [PMID: 32437028 DOI: 10.1002/jcp.29670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 01/13/2020] [Indexed: 12/22/2022]
Abstract
Our previous study demonstrated mechanical stretch (MS) could induce the apoptosis of retinal pigment epithelial (RPE) cells, but the related mechanisms remained unclear. This study was to characterize the protein expression profile in RPE cell line ARPE-19 exposed to MS, cytochalasin D (CD; an inhibitor of actin polymerization) or CD + MS at 2-time points (6, 24 hr; n = 3, at each time point) by using proteomics technique. Our data highlighted that compared with control, ECE1 was continuously downregulated in ARPE-19 cells treated by MS or CD + MS from 6 to 24 hr. Function and protein-protein interaction network analyses showed ATAD2 was downregulated in all three treatment groups compared with control, but successive upregulation of RPS13 and RPL7 and downregulation of AHSG were specifically induced by MS. ATAD2 was enriched in cell cycle; AHSG was associated with membrane organization; RPS13 and RPL7 participated in ribosome biogenesis. Furthermore, transcription factor CREB1 that was upregulated in MS group at 24 hr after treatment, may negatively regulate ATAD2. The expressions of all crucial proteins in ARPE-19 cells were confirmed by western blot analysis. Overexpression of ATAD2 and AHSG were also shown to reverse the apoptosis of ARPE-19 cells induced by MS or CD + MS, with significantly decreased apoptotic rates and caspase-3 activities. Accordingly, our findings suggest downregulation of ATAD2 and AHSG may be potential contributors to the apoptosis of RPE cells induced by MS. Overexpression of them may represent underlying preventive and therapeutic strategies for MS-induced retinal disorders.
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Affiliation(s)
- Fancheng Yan
- Department of Ophthalmology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Meng Gao
- Department of Ophthalmology, Affiliated Hospital of Weifang Medical University, Weifang, Shandong, China
| | - Yiyi Gong
- Central Research Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical, Beijing, China
| | - Lin Zhang
- School of Life Sciences, MOE Key Laboratory of Bioinformatics, Center for Synthetic and Systematic Biology, Tsinghua University, Beijing, China
| | - Nanping Ai
- Department of Ophthalmology, Chinese PLA General Hospital, Beijing, China
| | - Jingxue Zhang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Laboratory, Capital Medical University, Beijing, China
| | - Yijie Chai
- Department of Pathology, Peking University Health Science Center, Beijing, China
| | - Shen Wu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Laboratory, Capital Medical University, Beijing, China
| | - Qian Liu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Laboratory, Capital Medical University, Beijing, China
| | - Xian Jiang
- Department of Ophthalmology, The First People's Hospital of Huainan, The First Affiliated Hospital, Anhui University of Science and Technology, Anhui, China
| | - Haiteng Deng
- School of Life Sciences, MOE Key Laboratory of Bioinformatics, Center for Synthetic and Systematic Biology, Tsinghua University, Beijing, China
| | - Wu Liu
- Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology & Visual Sciences Key Laboratory, Capital Medical University, Beijing, China
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33
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Milton AO, Wang T, Li W, Guo J, Zhang S. Mechanical stretch increases Kv1.5 current through an interaction between the S1-S2 linker and N-terminus of the channel. J Biol Chem 2020; 295:4723-4732. [PMID: 32122972 DOI: 10.1074/jbc.ra119.011302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 02/27/2020] [Indexed: 11/06/2022] Open
Abstract
The voltage-gated potassium channel Kv1.5 plays important roles in atrial repolarization and regulation of vascular tone. In the present study, we investigated the effects of mechanical stretch on Kv1.5 channels. We induced mechanical stretch by centrifuging or culturing Kv1.5-expressing HEK 293 cells and neonatal rat ventricular myocytes in low osmolarity (LO) medium and then recorded Kv1.5 current (IKv1.5) in a normal, isotonic solution. We observed that mechanical stretch increased IKv1.5, and this increase required the intact, long, proline-rich extracellular S1-S2 linker of the Kv1.5 channel. The low osmolarity-induced IKv1.5 increase also required an intact intracellular N terminus, which contains the binding motif for endogenous Src tyrosine kinase that constitutively inhibits IKv1.5 Disrupting the Src-binding motif of Kv1.5 through N-terminal truncation or mutagenesis abolished the mechanical stretch-mediated increase in IKv1.5 Our results further showed that the extracellular S1-S2 linker of Kv1.5 communicates with the intracellular N terminus. Although the S1-S2 linker of WT Kv1.5 could be cleaved by extracellularly applied proteinase K (PK), an N-terminal truncation up to amino acid residue 209 altered the conformation of the S1-S2 linker and made it no longer susceptible to proteinase K-mediated cleavage. In summary, the findings of our study indicate that the S1-S2 linker of Kv1.5 represents a mechanosensor that regulates the activity of this channel. By targeting the S1-S2 linker, mechanical stretch may induce a change in the N-terminal conformation of Kv1.5 that relieves Src-mediated tonic channel inhibition and results in an increase in IKv1.5.
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Affiliation(s)
- Alexandria O Milton
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Tingzhong Wang
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Wentao Li
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Jun Guo
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Shetuan Zhang
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
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34
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Jia X, Su H, Chen X, Huang Y, Zheng Y, Ji P, Gao C, Gong X, Huang Y, Jiang LH, Fan Y. A critical role of the K Ca 3.1 channel in mechanical stretch-induced proliferation of rat bone marrow-derived mesenchymal stem cells. J Cell Mol Med 2020; 24:3739-3744. [PMID: 32065503 PMCID: PMC7131943 DOI: 10.1111/jcmm.15014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/02/2020] [Accepted: 01/06/2020] [Indexed: 12/11/2022] Open
Abstract
Mechanical stimulation is an important factor regulating mesenchymal stem cell (MSC) functions such as proliferation. The Ca2+ -activated K+ channel, KCa 3.1, is critically engaged in MSC proliferation but its role in mechanical regulation of MSC proliferation remains unknown. Here, we examined the KCa 3.1 channel expression and its role in rat bone marrow-derived MSC (BMSC) proliferation in response to mechanical stretch. Application of mechanical stretch stimulated BMSC proliferation via promoting cell cycle progression. Such mechanical stimulation up-regulated the KCa 3.1 channel expression and pharmacological or genetic inhibition of the KCa 3.1 channel strongly suppressed stretch-induced increase in cell proliferation and cell cycle progression. These results support that the KCa 3.1 channel plays an important role in transducing mechanical forces to MSC proliferation. Our finding provides new mechanistic insights into how mechanical stimuli regulate MSC proliferation and also a viable bioengineering approach to improve MSC proliferation.
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Affiliation(s)
- Xiaoling Jia
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, China.,School of Biomedical Science, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Hao Su
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Xinlan Chen
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Yangbi Huang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Yufan Zheng
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Pei Ji
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Chao Gao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Xianghui Gong
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Yan Huang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Lin-Hua Jiang
- School of Biomedical Science, Faculty of Biological Sciences, University of Leeds, Leeds, UK.,Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, China.,Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability, National Research Center for Rehabilitation Technical Aids, Beijing, China
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35
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Kubo Y, Hoffmann B, Goltz K, Schnakenberg U, Jahr H, Merkel R, Schulze-Tanzil G, Pufe T, Tohidnezhad M. Different Frequency of Cyclic Tensile Strain Relates to Anabolic/Catabolic Conditions Consistent with Immunohistochemical Staining Intensity in Tenocytes. Int J Mol Sci 2020; 21:E1082. [PMID: 32041254 DOI: 10.3390/ijms21031082] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/24/2020] [Accepted: 02/02/2020] [Indexed: 01/13/2023] Open
Abstract
Tenocytes are mechanosensitive cells intimately adapting their expression profile and hence, their phenotype to their respective mechanomilieu. The immunolocalization and expression intensity of tenogenic, anabolic and catabolic markers in tenocytes in response to in vitro mechanical loading have not been monitored by immunohistochemical staining (IHC). Thus, we investigated the association between IHC intensities, different stimulation frequencies, and tenogenic metabolism using a versatile mechanical stretcher. Primary tenocytes obtained from murine Achilles tendons were transferred to poly(dimethylsiloxane) (PDMS) elastomeric chamber. Chambers were cyclically stretched by 5% in uniaxial direction at a variation of tensile frequency (1 or 2 Hz) for 3 h. After stretching, cell physiology, IHC intensities of tendon-related markers, and protein level of the angiogenesis marker vascular endothelial growth factor (VEGF) were evaluated. Cell proliferation in tenocytes stimulated with 1 Hz stretch was significantly higher than with 2 Hz or without stretch, while 2 Hz stretch induced significantly reduced cell viability and proliferation with microscopically detectable apoptotic cell changes. The amount of scleraxis translocated into the nuclei and tenomodulin immunoreactivity of tenocytes treated with stretch were significantly higher than of non-stretched cells. The collagen type-1 expression level in tenocytes stretched at 1 Hz was significantly higher than in those cultivated with 2 Hz or without stretching, whereas the matrix metalloproteinase (MMP)-1 and MMP-13 immunoreactivities of cells stretched at 2 Hz were significantly higher than in those stimulated with 1 Hz or without stretching. The secreted VEGF-protein level of tenocytes stretched at 2 Hz was significantly higher than without stretching. Our IHC findings consistent with cell physiology suggest that appropriate stretching can reproduce in vitro short-term tenogenic anabolic/catabolic conditions and allow us to identify an anabolic stretching profile.
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36
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Najrana T, Mahadeo A, Abu-Eid R, Kreienberg E, Schulte V, Uzun A, Schorl C, Goldberg L, Quesenberry P, Sanchez-Esteban J. Mechanical stretch regulates the expression of specific miRNA in extracellular vesicles released from lung epithelial cells. J Cell Physiol 2020; 235:8210-8223. [PMID: 31970782 DOI: 10.1002/jcp.29476] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 01/08/2020] [Indexed: 01/01/2023]
Abstract
The underlying mechanism of normal lung organogenesis is not well understood. An increasing number of studies are demonstrating that extracellular vesicles (EVs) play critical roles in organ development by delivering microRNAs (miRNA) to neighboring and distant cells. miRNAs are important for fetal lung growth; however, the role of miRNA-EVs (miRNAs packaged inside the EVs) during fetal lung development is unexplored. The aim of this study was to examine the expression of miRNA-EVs in MLE-12, a murine lung epithelial cell line subjected to mechanical stretch in vitro with the long-term goal to investigate their potential role in the fetal lung development. Both cyclic and continuous mechanical stretch regulate miRNA differentially in EVs released from MLE-12 and intracellularly, demonstrating that mechanical signals regulate the expression of miRNA-EVs in lung epithelial cells. These results provide a proof-of-concept for the potential role that miRNA-EVs could play in the development of fetal lung.
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Affiliation(s)
- Tanbir Najrana
- Department of Pediatrics, Women and Infants Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Anshu Mahadeo
- Department of Pediatrics, Women and Infants Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Rasha Abu-Eid
- Division of Life Sciences, Institute of Dentistry, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | - Elena Kreienberg
- Department of Biology and Biochemistry, Brown University, Providence, Rhode Island
| | - Victoria Schulte
- Department of Biology and Biochemistry, Brown University, Providence, Rhode Island
| | - Alper Uzun
- Department of Pediatrics, Center of Computational Molecular Biology, Brown University, Providence, Rhode Island
| | - Christoph Schorl
- Department of Biology and Biochemistry, Brown University, Providence, Rhode Island
| | - Laura Goldberg
- Division of Hematology/Oncology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Peter Quesenberry
- Division of Hematology/Oncology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Juan Sanchez-Esteban
- Department of Pediatrics, Women and Infants Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
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37
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Jo SB, Erdenebileg U, Dashnyam K, Jin GZ, Cha JR, El-Fiqi A, Knowles JC, Patel KD, Lee HH, Lee JH, Kim HW. Nano-graphene oxide/polyurethane nanofibers: mechanically flexible and myogenic stimulating matrix for skeletal tissue engineering. J Tissue Eng 2020; 11:2041731419900424. [PMID: 32076499 PMCID: PMC7001895 DOI: 10.1177/2041731419900424] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/18/2019] [Indexed: 12/16/2022] Open
Abstract
For skeletal muscle engineering, scaffolds that can stimulate myogenic differentiation of cells while possessing suitable mechanical properties (e.g. flexibility) are required. In particular, the elastic property of scaffolds is of importance which helps to resist and support the dynamic conditions of muscle tissue environment. Here, we developed highly flexible nanocomposite nanofibrous scaffolds made of polycarbonate diol and isosorbide-based polyurethane and hydrophilic nano-graphene oxide added at concentrations up to 8%. The nano-graphene oxide incorporation increased the hydrophilicity, elasticity, and stress relaxation capacity of the polyurethane-derived nanofibrous scaffolds. When cultured with C2C12 cells, the polyurethane-nano-graphene oxide nanofibers enhanced the initial adhesion and spreading of cells and further the proliferation. Furthermore, the polyurethane-nano-graphene oxide scaffolds significantly up-regulated the myogenic mRNA levels and myosin heavy chain expression. Of note, the cells on the flexible polyurethane-nano-graphene oxide nanofibrous scaffolds could be mechanically stretched to experience dynamic tensional force. Under the dynamic force condition, the cells expressed significantly higher myogenic differentiation markers at both gene and protein levels and exhibited more aligned myotubular formation. The currently developed polyurethane-nano-graphene oxide nanofibrous scaffolds, due to their nanofibrous morphology and high mechanical flexibility, along with the stimulating capacity for myogenic differentiation, are considered to be a potential matrix for future skeletal muscle engineering.
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Affiliation(s)
- Seung Bin Jo
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
| | - Uyanga Erdenebileg
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
| | - Khandmaa Dashnyam
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
| | - Guang-Zhen Jin
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
| | - Jae-Ryung Cha
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
| | - Ahmed El-Fiqi
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
| | - Jonathan C. Knowles
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
- Division of Biomaterials and Tissue
Engineering, Eastman Dental Institute, University College London, London, UK
- The Discoveries Centre for Regenerative
and Precision Medicine, Eastman Dental Institute, University College London, London,
UK
| | - Kapil Dev Patel
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
| | - Hae-Hyoung Lee
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
- Department of Biomaterials Science,
College of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Jung-Hwan Lee
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
- Department of Biomaterials Science,
College of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Hae-Won Kim
- Institute of Tissue Regeneration
Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and
BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University,
Cheonan, Republic of Korea
- UCL Eastman-Korea Dental Medicine
Innovation Centre, Dankook University, Cheonan, Republic of Korea
- Department of Biomaterials Science,
College of Dentistry, Dankook University, Cheonan, Republic of Korea
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Ansaryan S, Khayamian MA, Saghafi M, Shalileh S, Nikshoar MS, Abbasvandi F, Mahmoudi M, Bahrami F, Abdolahad M. Stretch Induces Invasive Phenotypes in Breast Cells Due to Activation of Aerobic-Glycolysis-Related Pathways. ACTA ACUST UNITED AC 2019; 3:e1800294. [PMID: 32648669 DOI: 10.1002/adbi.201800294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 03/22/2019] [Indexed: 12/19/2022]
Abstract
It is increasingly being accepted that cells' physiological functions are substantially dependent on the mechanical characteristics of their surrounding tissue. This is mainly due to the key role of biomechanical forces on cells and their nucleus' shapes, which have the capacity to regulate chromatin conformation and thus gene regulations. Therefore, it is reasonable to postulate that altering the biomechanical properties of tissue may have the capacity to change cell functions. Here, the role of cell stretching (as a model of biomechanical variations) is probed in cell migration and invasion capacity using human normal and cancerous breast cells. By several analyses (i.e., scratch assay, invasion to endothelial barrier, real-time RNA sequencing, confocal imaging, patch clamp, etc.), it is revealed that the cell-stretching process could increase the migration and invasion capabilities of normal and cancerous cells, respectively. More specifically, it is found that poststretched breast cancer cells are found in low grades of invasion; they substantially upregulate the expression of manganese-dependent superoxide dismutase (MnSOD) through activation of H-Ras proteins, which subsequently induce aerobic glycolysis followed by an overproduction of matrix metalloproteinases (MMP)-reinforced filopodias. Presence of such invadopodias facilitates targeting of the endothelial layer, and increased invasive behaviors in breast cells are observed.
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Affiliation(s)
- Saeid Ansaryan
- Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran.,Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran
| | - Mohammad Ali Khayamian
- Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran.,Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran.,School of Mechanical Engineering, College of Engineering, University of Tehran, 11155-4563, Tehran, Iran
| | - Mohammad Saghafi
- Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran.,Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran
| | - Shahriar Shalileh
- Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran.,Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran
| | - Mohammad Saied Nikshoar
- Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran.,Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran
| | - Fereshteh Abbasvandi
- ATMP Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, P.O. BOX 15179/64311, Tehran, Iran
| | - Morteza Mahmoudi
- Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA.,Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, 13169-43551, Tehran, Iran
| | - Farideh Bahrami
- Neuroscience Research Center and Dept. of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, P.O.Box: 19839-63113, Tehran, Iran
| | - Mohammad Abdolahad
- Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran.,Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran
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39
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Fang B, Liu Y, Zheng D, Shan S, Wang C, Gao Y, Wang J, Xie Y, Zhang Y, Li Q. The effects of mechanical stretch on the biological characteristics of human adipose-derived stem cells. J Cell Mol Med 2019; 23:4244-4255. [PMID: 31020802 PMCID: PMC6533502 DOI: 10.1111/jcmm.14314] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 02/17/2019] [Accepted: 03/14/2019] [Indexed: 01/21/2023] Open
Abstract
Adipose‐derived stem cells (ADSCs) are a subset of mesenchymal stem cells (MSCs), which have promised a vast therapeutic potential in tissue regeneration. Recent studies have demonstrated that combining stem cells with mechanical stretch may strengthen the efficacy of regenerative therapies. However, the exact influences of mechanical stretch on MSCs still remain inconclusive. In this study, human ADSCs (hADSCs) were applied cyclic stretch stimulation under an in vitro stretching model for designated duration. We found that mechanical stretch significantly promoted the proliferation, adhesion and migration of hADSCs, suppressing cellular apoptosis and increasing the production of pro‐healing cytokines. For differentiation of hADSCs, mechanical stretch inhibited adipogenesis, but enhanced osteogenesis. Long‐term stretch could promote ageing of hADSCs, but did not alter the cell size and typical immunophenotypic characteristics. Furthermore, we revealed that PI3K/AKT and MAPK pathways might participate in the effects of mechanical stretch on the biological characteristics of hADSCs. Taken together, mechanical stretch is an effective strategy for enhancing stem cell behaviour and regulating stem cell fate. The synergy between hADSCs and mechanical stretch would most likely facilitate tissue regeneration and promote the development of stem cell therapy.
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Affiliation(s)
- Bin Fang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanjun Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Danning Zheng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengzhou Shan
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chuandong Wang
- Department of Orthopedic Surgery, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ya Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Wang
- Department of Otorhinolaryngology and Head & Neck Surgery, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yun Xie
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yifan Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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40
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Yang Y, Hu L, Xia H, Chen L, Cui S, Wang Y, Zhou T, Xiong W, Song L, Li S, Pan S, Xu J, Liu M, Xiao H, Qin L, Shang Y, Yao S. Resolvin D1 attenuates mechanical stretch-induced pulmonary fibrosis via epithelial-mesenchymal transition. Am J Physiol Lung Cell Mol Physiol 2019; 316:L1013-L1024. [PMID: 30724098 DOI: 10.1152/ajplung.00415.2018] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Mechanical ventilation-induced pulmonary fibrosis plays an important role in the high mortality rate of acute respiratory distress syndrome (ARDS). Resolvin D1 (RvD1) displays potent proresolving activities. Epithelial-mesenchymal transition (EMT) has been proved to be an important pathological feature of lung fibrosis. This study aimed to investigate whether RvD1 can attenuate mechanical ventilation-induced lung fibrosis. Human lung epithelial (BEAS-2B) cells were pretreated with RvD1 for 30 min and exposed to acid for 10 min before being subjected to mechanical stretch for 48 h. C57BL/6 mice were subjected to intratracheal acid aspiration followed by mechanical ventilation 24 h later (peak inspiratory pressure 22 cmH2O, positive end-expiratory pressure 2 cmH2O, and respiratory rate 120 breaths/min for 2 h). RvD1 was injected into mice for 5 consecutive days after mechanical ventilation. Treatment with RvD1 significantly inhibited mechanical stretch-induced mesenchymal markers (vimentin and α-smooth muscle actin) and stimulated epithelial markers (E-cadherin). Tert-butyloxycarbonyl 2 (BOC-2), a lipoxin A4 receptor/formyl peptide receptor 2 (ALX/FPR2) antagonist, is known to inhibit ALX/FPR2 function. BOC-2 could reverse the beneficial effects of RvD1. The antifibrotic effect of RvD1 was associated with the suppression of Smad2/3 phosphorylation. This study demonstrated that mechanical stretch could induce EMT and pulmonary fibrosis and that treatment with RvD1 could attenuate mechanical ventilation-induced lung fibrosis, thus highlighting RvD1 as an effective therapeutic agent against pulmonary fibrosis associated with mechanical ventilation.
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Affiliation(s)
- Yiyi Yang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Lisha Hu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Haifa Xia
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Lin Chen
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Shunan Cui
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Yaxin Wang
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Ting Zhou
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Wei Xiong
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Limin Song
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Shengnan Li
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Shangwen Pan
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Jiqian Xu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Min Liu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Hairong Xiao
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Lu Qin
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - You Shang
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
| | - Shanglong Yao
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China.,Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, Hubei , China
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41
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Kim W, Kim J, Park HS, Jeon JS. Development of Microfluidic Stretch System for Studying Recovery of Damaged Skeletal Muscle Cells. Micromachines (Basel) 2018; 9:E671. [PMID: 30567359 PMCID: PMC6315523 DOI: 10.3390/mi9120671] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/09/2018] [Accepted: 12/16/2018] [Indexed: 12/13/2022]
Abstract
The skeletal muscle occupies about 40% mass of the human body and plays a significant role in the skeletal movement control. Skeletal muscle injury also occurs often and causes pain, discomfort, and functional impairment in daily living. Clinically, most studies observed the recovery phenomenon of muscle by massage or electrical stimulation, but there are limitations on quantitatively analyzing the effects on recovery. Although additional efforts have been made within in vitro biochemical research, some questions still remain for effects of the different cell microenvironment for recovery. To overcome these limitations, we have developed a microfluidic system to investigate appropriate conditions for repairing skeletal muscle injury. First, the muscle cells were cultured in the microfluidic chip and differentiated to muscle fibers. After differentiation, we treated hydrogen peroxide and 18% axial stretch to cause chemical and physical damage to the muscle fibers. Then the damaged muscle fibers were placed under the cyclic stretch condition to allow recovery. Finally, we analyzed the damage and recovery by quantifying morphological change as well as the intensity change of intracellular fluorescent signals and showed the skeletal muscle fibers recovered better in the cyclic stretched condition. In total, our in situ generation of muscle damage and induction recovery platform may be a key system for investigating muscle recovery and rehabilitation.
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Affiliation(s)
- Wanho Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea.
| | - Jaesang Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea.
| | - Hyung-Soon Park
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea.
| | - Jessie S Jeon
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea.
- KI HST, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea.
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42
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Li N, Wang WB, Bao H, Shi Q, Jiang ZL, Qi YX, Han Y. MicroRNA-129-1-3p regulates cyclic stretch-induced endothelial progenitor cell differentiation by targeting Runx2. J Cell Biochem 2018; 120:5256-5267. [PMID: 30320897 DOI: 10.1002/jcb.27800] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 09/10/2018] [Indexed: 12/15/2022]
Abstract
Endothelial progenitor cells (EPCs) are vital to the recovery of endothelial function and maintenance of vascular homeostasis. EPCs mobilize to sites of vessel injury and differentiate into mature endothelial cells (ECs). Locally mobilized EPCs are exposed to cyclic stretch caused by blood flow, which is important for EPC differentiation. MicroRNAs (miRNAs) have emerged as key regulators of several cellular processes. However, the role of miRNAs in cyclic stretch-induced EPC differentiation remains unclear. Here, we investigate the effects of microRNA-129-1-3p (miR-129-1-3p) and its novel target Runt-related transcription factor 2 (Runx2) on EPC differentiation induced by cyclic stretch. Bone marrow-derived EPCs were exposed to cyclic stretch with a magnitude of 5% (which mimics physiological mechanical stress) at a constant frequency of 1.25 Hz for 24 hours. The results from a miRNA array revealed that cyclic stretch significantly decreased miR-129-1-3p expression. Furthermore, we found that downregulation of miR-129-1-3p during cyclic stretch-induced EPC differentiation toward ECs. Meanwhile, expression of Runx2, a putative target gene of miR-129-1-3p, was increased as a result of cyclic stretch. A 3'UTR reporter assay validated Runx2 as a direct target of miR-129-1-3p. Furthermore, small interfering RNA (siRNA)-mediated knockdown of Runx2 inhibited EPC differentiation into ECs and attenuated EPC tube formation via modulation of vascular endothelial growth factor (VEGF) secretion from EPCs in vitro. Our findings demonstrated that cyclic stretch suppresses miR-129-1-3p expression, which in turn activates Runx2 and VEGF to promote endothelial differentiation of EPCs and angiogenesis. Therefore, targeting miR-129-1-3p and Runx2 may be a potential therapeutic strategy for treating vessel injury.
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Affiliation(s)
- Na Li
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Wen-Bin Wang
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Han Bao
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Qian Shi
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Zong-Lai Jiang
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Ying-Xin Qi
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yue Han
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
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Shi XZ, Lin YM, Hegde S. Novel Insights Into the Mechanisms of Abdominal Pain in Obstructive Bowel Disorders. Front Integr Neurosci 2018; 12:23. [PMID: 29937720 PMCID: PMC6002527 DOI: 10.3389/fnint.2018.00023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 05/22/2018] [Indexed: 12/27/2022] Open
Abstract
Obstructive bowel disorders (OBD) are characterized by lumen distention due to mechanical or functional obstruction in the gut. Abdominal pain is one of the main symptoms in OBD. In this article, we aim to critically review the potential mechanisms for acute and chronic pain in bowel obstruction (BO). While clustered contractions and associated increase of intraluminal pressure may account for colicky pain in simple obstruction, ischemia may be involved in acute pain in severe conditions such as closed loop obstruction. Recent preclinical studies discovered that visceral sensitivity is increased in BO, and visceral hypersensitivity may underlie the mechanisms of chronic abdominal pain in BO. Mounting evidence suggests that lumen distension, as a circumferential mechanical stretch, alters gene expression (mechano-transcription) in the distended bowel, and mechano-transcription of nociceptive and inflammatory mediators plays a critical role in the development of visceral hypersensitivity in BO. Mechano-transcription of nerve growth factor (NGF) in gut smooth muscle cells is found to increase voltage-gated Na+ channel (Nav) activity of the primary sensory neurons by up-regulating expression of TTX-resistant Nav1.8, whereas mechanical stretch-induced brain-derived neurotrophic factor (BDNF) reduces Kv currents especially A-type (IA) currents by down-regulating expression of specific IA subtypes such as Kv1.4. The NGF and BDNF mediated changes in gene expression and channel functions in the primary sensory neurons may constitute the main mechanisms of visceral hypersensitivity in OBD. In addition, mechanical stretch-induced COX-2 and other inflammatory mediators in the gut may also contribute to abdominal pain by activating and sensitizing nociceptors.
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Affiliation(s)
- Xuan-Zheng Shi
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, United States
| | - You-Min Lin
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, United States
| | - Shrilakshmi Hegde
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, United States
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44
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Kao YH, Chen PH, Sun CK, Chang YC, Lin YC, Tsai MS, Lee PH, Cheng CI. Cyclic Mechanical Stretch Up-regulates Hepatoma-Derived Growth Factor Expression in Cultured Rat Aortic Smooth Muscle Cells. Biosci Rep 2018; 38:BSR20171398. [PMID: 29467272 DOI: 10.1042/BSR20171398] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 02/14/2018] [Accepted: 02/21/2018] [Indexed: 11/19/2022] Open
Abstract
Hepatoma-derived growth factor (HDGF) is a potent mitogen for vascular smooth muscle cells (SMCs) during embryogenesis and injury repair of vessel walls. Whether mechanical stimuli modulate HDGF expression remains unknown. The present study aimed at investigating whether cyclic mechanical stretch plays a regulatory role in HDGF expression and regenerative cytokine production in aortic SMCs. A SMC cell line was grown on a silicone-based elastomer chamber with extracellular matrix coatings (either type I collagen or fibronectin) and received cyclic and uniaxial mechanical stretches with 10% deformation at frequency 1 Hz. Morphological observation showed that fibronectin coating provided better cell adhesion and spreading and that consecutive 6 h of cyclic mechanical stretch remarkably induced reorientation and realignment of SMCs. Western blotting detection demonstrated that continuous mechanical stimuli elicited up-regulation of HDGF and proliferative cell nuclear antigen, a cell proliferative marker. Signal kinetic profiling study indicated that cyclic mechanical stretch induced signaling activity in RhoA/ROCK and PI3K/Akt cascades. Kinase inhibition study further showed that blockade of PI3K activity suppressed the stretch-induced tumor necrosis factor-α (TNF-α), whereas RhoA/ROCK inhibition significantly blunted the interleukin-6 (IL-6) production and HDGF overexpression. Moreover, siRNA-mediated HDGF gene silencing significantly suppressed constitutive expression of IL-6, but not TNF-α, in SMCs. These findings support the role of HDGF in maintaining vascular expression of IL-6, which has been regarded a crucial regenerative factor for acute vascular injury. In conclusion, cyclic mechanical stretch may maintain constitutive expression of HDGF in vascular walls and be regarded an important biophysical regulator in vascular regeneration.
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Abstract
Cell migration is a core process to preserve homeostasis. Release of chemotactic signals induces changes in cell cytoskeleton to facilitate migration. This includes the rearrangement of cytoskeleton, genomic reprogramming and the modification of the surrounding extracellular matrix (ECM) to allow the motion of cells through. In the special case of repair after acute lung injury, cells must migrate while exposed to an increased mechanical stretch caused either by an increased work of breathing or positive-pressure ventilation. Interestingly, the cell response to this increased mechanical load can modify virtually all the mechanisms involved in cell migration. In this review we explore the interplay between stretch and the machinery responsible for cell migration. A translational approach to find new therapies in acute lung injury must take into account these interactions in order to develop effective treatments that promote lung repair.
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Affiliation(s)
- Cecilia López-Martínez
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Covadonga Huidobro
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Guillermo M Albaiceta
- Departamento de Biología Funcional, Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Inés López-Alonso
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
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Huttin O, Pierre S, Venner C, Voilliot D, Sellal JM, Aliot E, Sadoul N, Juillière Y, Selton-Suty C. Interactions between mitral valve and left ventricle analysed by 2D speckle tracking in patients with mitral valve prolapse: one more piece to the puzzle. Eur Heart J Cardiovasc Imaging 2018; 18:323-331. [PMID: 27099279 DOI: 10.1093/ehjci/jew075] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 03/13/2016] [Indexed: 11/12/2022] Open
Abstract
Aims Two-dimensional echocardiography often reveals abnormal left ventricle (LV) lateral wall kinetics in patients presenting with mitral valve prolapse (MVP). However, relations between MVP and LV deformation are not clearly established. The aim of this study was to assess and quantify mitral valve chordae, leaflets, and LV myocardial interactions using speckle tracking echocardiography (STE). Methods and results Using STE-derived longitudinal strain curves, LV peak longitudinal strain (PLS, %), post-systolic index (PSI), and pre-stretch index (PST) were analysed in 100 patients with MVP and normal LV ejection fraction. Global, regional, and segmental values were compared according to mitral regurgitation severity and MVP location. Twenty healthy subjects served as control patients. There was no significant difference among control and MVP group for global and regional PLS (-23.7 ± 3.2 vs. -23.1 ± 2.2). In contrast, patients with MVP had significantly higher values of global PST (3.2 ± 4.1 vs. 1.3 ± 1.2; P = 0.01) and global PSI (3.2 ± 0.4 vs. 1.7 ± 1.1; P = 0.05) compared with controls, located mainly in the lateral wall and basal segments. Both anterior and posterior MVPs were responsible for PSI in basal inferior segments and PST in anterior ones. Mid-wall segmental deformation pattern changes were mainly observed at the level of the segments adjacent to the papillary muscle. Conclusion This study supports the hypothesis that pathological early-systolic shortening and late systolic, post-systolic deformation are attributed to an increased interaction between wall deformation and mitral valve events in patients with MVP. STE is a useful tool in the assessment of interplays between MV leaflets and myocardium and helps to demonstrate changes in temporal pattern of myocardial deformation.
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Affiliation(s)
- Olivier Huttin
- Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, rue du Morvan, Vandoeuvre lès Nancy 54511, France.,CHU Nancy, Pôle de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Vandoeuvre lès Nancy, France.,Université de Lorraine, Nancy, France
| | - Sarah Pierre
- Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, rue du Morvan, Vandoeuvre lès Nancy 54511, France.,CHU Nancy, Pôle de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Vandoeuvre lès Nancy, France
| | - Clément Venner
- Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, rue du Morvan, Vandoeuvre lès Nancy 54511, France.,CHU Nancy, Pôle de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Vandoeuvre lès Nancy, France
| | - Damien Voilliot
- Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, rue du Morvan, Vandoeuvre lès Nancy 54511, France.,CHU Nancy, Pôle de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Vandoeuvre lès Nancy, France
| | - Jean-Marc Sellal
- Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, rue du Morvan, Vandoeuvre lès Nancy 54511, France.,CHU Nancy, Pôle de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Vandoeuvre lès Nancy, France
| | - Etienne Aliot
- Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, rue du Morvan, Vandoeuvre lès Nancy 54511, France.,CHU Nancy, Pôle de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Vandoeuvre lès Nancy, France.,Université de Lorraine, Nancy, France
| | - Nicolas Sadoul
- Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, rue du Morvan, Vandoeuvre lès Nancy 54511, France.,CHU Nancy, Pôle de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Vandoeuvre lès Nancy, France.,Université de Lorraine, Nancy, France
| | - Yves Juillière
- Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, rue du Morvan, Vandoeuvre lès Nancy 54511, France.,CHU Nancy, Pôle de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Vandoeuvre lès Nancy, France.,Université de Lorraine, Nancy, France
| | - Christine Selton-Suty
- Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, rue du Morvan, Vandoeuvre lès Nancy 54511, France.,CHU Nancy, Pôle de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Vandoeuvre lès Nancy, France
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47
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Wu YF, Huang YT, Wang HK, Yao CJ, Sun JS, Chao YH. Hyperglycemia Augments the Adipogenic Transdifferentiation Potential of Tenocytes and Is Alleviated by Cyclic Mechanical Stretch. Int J Mol Sci. 2017;19. [PMID: 29283422 PMCID: PMC5796040 DOI: 10.3390/ijms19010090] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 12/25/2017] [Accepted: 12/26/2017] [Indexed: 12/19/2022] Open
Abstract
Diabetes mellitus is associated with damage to tendons, which may result from cellular dysfunction in response to a hyperglycemic environment. Tenocytes express diminished levels of tendon-associated genes under hyperglycemic conditions. In contrast, mechanical stretch enhances tenogenic differentiation. However, whether hyperglycemia increases the non-tenogenic differentiation potential of tenocytes and whether this can be mitigated by mechanical stretch remains elusive. We explored the in vitro effects of high glucose and mechanical stretch on rat primary tenocytes. Specifically, non-tenogenic gene expression, adipogenic potential, cell migration rate, filamentous actin expression, and the activation of signaling pathways were analyzed in tenocytes treated with high glucose, followed by the presence or absence of mechanical stretch. We analyzed tenocyte phenotype in vivo by immunohistochemistry using an STZ (streptozotocin)-induced long-term diabetic mouse model. High glucose-treated tenocytes expressed higher levels of the adipogenic transcription factors PPARγ and C/EBPs. PPARγ was also highly expressed in diabetic tendons. In addition, increased adipogenic differentiation and decreased cell migration induced by high glucose implicated a fibroblast-to-adipocyte phenotypic change. By applying mechanical stretch to tenocytes in high-glucose conditions, adipogenic differentiation was repressed, while cell motility was enhanced, and fibroblastic morphology and gene expression profiles were strengthened. In part, these effects resulted from a stretch-induced activation of ERK (extracellular signal-regulated kinases) and a concomitant inactivation of Akt. Our results show that mechanical stretch alleviates the augmented adipogenic transdifferentiation potential of high glucose-treated tenocytes and helps maintain their fibroblastic characteristics. The alterations induced by high glucose highlight possible pathological mechanisms for diabetic tendinopathy. Furthermore, the beneficial effects of mechanical stretch on tenocytes suggest that an appropriate physical load possesses therapeutic potential for diabetic tendinopathy.
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48
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Nikolova-Krstevski V, Wagner S, Yu ZY, Cox CD, Cvetkovska J, Hill AP, Huttner IG, Benson V, Werdich AA, MacRae C, Feneley MP, Friedrich O, Martinac B, Fatkin D. Endocardial TRPC-6 Channels Act as Atrial Mechanosensors and Load-Dependent Modulators of Endocardial/Myocardial Cross-Talk. ACTA ACUST UNITED AC 2017; 2:575-590. [PMID: 30062171 PMCID: PMC6058914 DOI: 10.1016/j.jacbts.2017.05.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/05/2017] [Accepted: 05/22/2017] [Indexed: 12/01/2022]
Abstract
Mechanoelectrical feedback may increase arrhythmia susceptibility, but the molecular mechanisms are incompletely understood. This study showed that mechanical stretch altered the localization, protein levels, and function of the cation-selective transient receptor potential channel (TRPC)-6 in atrial endocardial cells in humans, pigs, and mice. In endocardial/myocardial cross-talk studies, addition of media from porcine atrial endocardium (AE) cells altered the calcium (Ca2+) transient characteristics of human-induced pluripotent stem cell-derived cardiomyocytes. These changes did not occur with media from stretched AE cells. Our data suggested that endocardial TRPC-6-dependent paracrine signaling may modulate myocardial Ca2+ homeostasis under basal conditions and protect against stretch-induced atrial arrhythmias.
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Key Words
- AE, atrial endocardium
- AF, atrial fibrillation
- APB, aminoethoxydiphenyl borate
- Ab, antibody
- CM, cardiomyocyte
- Ca2+, calcium
- Dil-Ac-LDL, dil acetylated−low-density lipoprotein
- ET, endothelin
- HUVEC, human umbilical vein endothelial cell
- OAG, 1-oleoyl-2-acetyl-sn-glycerol
- TAC, thoracic aortic constriction
- TRPC, transient receptor potential channel
- Tet, tetanus toxin
- [Ca2+]i, intracellular global Ca2+
- atrial endocardium
- endothelium
- iPS, induced pluripotent stem
- mechanical stretch
- transient receptor potential channels
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Affiliation(s)
- Vesna Nikolova-Krstevski
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia.,St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia
| | - Soeren Wagner
- Department of Anesthesiology, University Clinic Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Ze Yan Yu
- St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia.,Cardiac Physiology and Transplantation Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia
| | - Charles D Cox
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia
| | - Jasmina Cvetkovska
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia
| | - Adam P Hill
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia.,St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia
| | - Inken G Huttner
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia.,St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia
| | - Victoria Benson
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Andreas A Werdich
- Cardiovascular Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Calum MacRae
- Cardiovascular Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Michael P Feneley
- St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia.,Cardiac Physiology and Transplantation Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia.,Cardiology Department, St. Vincent's Hospital, Darlinghurst, New South Wales, Australia
| | - Oliver Friedrich
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia.,Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Boris Martinac
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia.,St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia
| | - Diane Fatkin
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia.,St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Kensington, New South Wales, Australia.,Cardiology Department, St. Vincent's Hospital, Darlinghurst, New South Wales, Australia
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49
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Shim AL, Mitrokhin VM, Kazanski VE, Mladenov MI, Kamkin AG. Discrete Stretch Eliminates Electrophysiological Dose-Dependent Effects of Nitric Oxide Donor SNAP in Rat Atrium. Bull Exp Biol Med 2017; 163:705-709. [PMID: 29063314 DOI: 10.1007/s10517-017-3885-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Indexed: 02/02/2023]
Abstract
Depolarization of cardiomyocytes triggered by stretch and activation of mechanically gated ion channels can lead to serious arrhythmias. However, stretch-induced signaling activating these channels remain little studied. This study tested the hypothesis on implication of NO in shaping the electrical abnormalities provoked by stretch of the right atrial myocardium in rat via a mechanism engaging a signaling cascade, where NO plays a significant role. This approach showed that in isolated right atrial preparation, NO donor SNAP induces the electrical abnormalities similar to those provoked by stretch, and the latter results from activation of NO synthase.
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Affiliation(s)
- A L Shim
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - V M Mitrokhin
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - V E Kazanski
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - M I Mladenov
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A G Kamkin
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
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50
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Shim AL, Mitrokhin VM, Gorbacheva LR, Savinkova IG, Pustovit KB, Mladenov MI, Kamkin AG. Kinetics of Mechanical Stretch-Induced Nitric Oxide Production in Rat Ventricular Cardiac Myocytes. Bull Exp Biol Med 2017; 163:583-585. [PMID: 28948553 DOI: 10.1007/s10517-017-3853-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Indexed: 11/30/2022]
Abstract
Discrete mechanical stretch of isolated spontaneously contracting cardiac myocytes was employed to examine the kinetics of NO production in these cells. NO oscillations were detected with fluorescent dye 4-amino-5-methylamino-2',7'-difluorofluorescein diacetate. The mechanisms underlying stretch-induced changes in NO concentration remain unclear and further studies are needed to evaluate the role of NO oscillation in the regulation of cardiomyocyte function.
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Affiliation(s)
- A L Shim
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - V M Mitrokhin
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - L R Gorbacheva
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - I G Savinkova
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - K B Pustovit
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - M I Mladenov
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A G Kamkin
- Department of Physiology, N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
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