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Calo CJ, Patil T, Palizzi M, Wheeler N, Hind LE. Collagen concentration regulates neutrophil extravasation and migration in response to infection in an endothelium dependent manner. Front Immunol 2024; 15:1405364. [PMID: 39021568 PMCID: PMC11251947 DOI: 10.3389/fimmu.2024.1405364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 06/17/2024] [Indexed: 07/20/2024] Open
Abstract
Introduction As the body's first line of defense against disease and infection, neutrophils must efficiently navigate to sites of inflammation; however, neutrophil dysregulation contributes to the pathogenesis of numerous diseases that leave people susceptible to infections. Many of these diseases are also associated with changes to the protein composition of the extracellular matrix. While it is known that neutrophils and endothelial cells, which play a key role in neutrophil activation, are sensitive to the mechanical and structural properties of the extracellular matrix, our understanding of how protein composition in the matrix affects the neutrophil response to infection is incomplete. Methods To investigate the effects of extracellular matrix composition on the neutrophil response to infection, we used an infection-on-a-chip microfluidic device that replicates a portion of a blood vessel endothelium surrounded by a model extracellular matrix. Model blood vessels were fabricated by seeding human umbilical vein endothelial cells on 2, 4, or 6 mg/mL type I collagen hydrogels. Primary human neutrophils were loaded into the endothelial lumens and stimulated by adding the bacterial pathogen Pseudomonas aeruginosa to the surrounding matrix. Results Collagen concentration did not affect the cell density or barrier function of the endothelial lumens. Upon infectious challenge, we found greater neutrophil extravasation into the 4 mg/mL collagen gels compared to the 6 mg/mL collagen gels. We further found that extravasated neutrophils had the highest migration speed and distance in 2mg/mL gels and that these values decreased with increasing collagen concentration. However, these phenomena were not observed in the absence of an endothelial lumen. Lastly, no differences in the percent of extravasated neutrophils producing reactive oxygen species were observed across the various collagen concentrations. Discussion Our study suggests that neutrophil extravasation and migration in response to an infectious challenge are regulated by collagen concentration in an endothelial cell-dependent manner. The results demonstrate how the mechanical and structural aspects of the tissue microenvironment affect the neutrophil response to infection. Additionally, these findings underscore the importance of developing and using microphysiological systems for studying the regulatory factors that govern the neutrophil response.
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Affiliation(s)
| | | | | | | | - Laurel E. Hind
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, United States
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Rodríguez-Bejarano OH, Parra-López C, Patarroyo MA. A review concerning the breast cancer-related tumour microenvironment. Crit Rev Oncol Hematol 2024; 199:104389. [PMID: 38734280 DOI: 10.1016/j.critrevonc.2024.104389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/29/2024] [Accepted: 05/06/2024] [Indexed: 05/13/2024] Open
Abstract
Breast cancer (BC) is currently the most common malignant tumour in women and one of the leading causes of their death around the world. New and increasingly personalised diagnostic and therapeutic tools have been introduced over the last few decades, along with significant advances regarding the study and knowledge related to BC. The tumour microenvironment (TME) refers to the tumour cell-associated cellular and molecular environment which can influence conditions affecting tumour development and progression. The TME is composed of immune cells, stromal cells, extracellular matrix (ECM) and signalling molecules secreted by these different cell types. Ever deeper understanding of TME composition changes during tumour development and progression will enable new and more innovative therapeutic strategies to become developed for targeting tumours during specific stages of its evolution. This review summarises the role of BC-related TME components and their influence on tumour progression and the development of resistance to therapy. In addition, an account on the modifications in BC-related TME components associated with therapy is given, and the completed or ongoing clinical trials related to this topic are presented.
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Affiliation(s)
- Oscar Hernán Rodríguez-Bejarano
- Health Sciences Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Calle 222#55-37, Bogotá 111166, Colombia; Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; PhD Programme in Biotechnology, Faculty of Sciences, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
| | - Carlos Parra-López
- Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia.
| | - Manuel Alfonso Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá 111321, Colombia; Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia.
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3
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Rössler L, Nasehi R, Hansen N, Aveic S, Fischer H. Porous collagen scaffolds enable endothelial lumen formation in vitro under both static and dynamic growth conditions. J Biomed Mater Res B Appl Biomater 2024; 112:e35444. [PMID: 38923270 DOI: 10.1002/jbm.b.35444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 04/26/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024]
Abstract
Despite recent advances in the field of tissue engineering, the development of complex tissue-like structures in vitro is compromised by the lack of integration of a functioning vasculature. In this study, we propose a mesoscale three-dimensional (3D) in vitro vascularized connective tissue model and demonstrate its feasibility to prompt the self-assembly of endothelial cells into vessel-like structures. Moreover, we investigate the effect of perfusion on the organization of the cells. For this purpose, primary endothelial cells (HUVECs) and a cell line of human foreskin fibroblasts are cultivated in ECM-like matrices made up of freeze-dried collagen scaffolds permeated with collagen type I hydrogel. A tailored bioreactor is designed to investigate the effect of perfusion on self-organization of HUVECs. Immunofluorescent staining, two-photon microscopy, second-harmonic generation imaging, and scanning electron microscopy are applied to visualize the spatial arrangement of the cells. The analyses reveal the formation of hollow, vessel-like structures of HUVECs in hydrogel-permeated collagen scaffolds under both static and dynamic conditions. In conclusion, we demonstrate the feasibility of a 3D porous collagen scaffolding system that enables and maintains the self-organization of HUVECs into vessel-like structures independent of a dynamic flow.
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Affiliation(s)
- Lena Rössler
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Aachen, Germany
- Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center, Göttingen, Germany
| | - Ramin Nasehi
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Aachen, Germany
- DWI - Leibniz Institute for Interactive Materials, Aachen, Germany
| | - Nadja Hansen
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Aachen, Germany
| | - Sanja Aveic
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Aachen, Germany
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Aachen, Germany
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4
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Nam U, Kim J, Yi HG, Jeon JS. Investigation of the Dysfunction Caused by High Glucose, Advanced Glycation End Products, and Interleukin-1 Beta and the Effects of Therapeutic Agents on the Microphysiological Artery Model. Adv Healthc Mater 2024:e2302682. [PMID: 38575148 DOI: 10.1002/adhm.202302682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 03/31/2024] [Indexed: 04/06/2024]
Abstract
Diabetes mellitus (DM) has substantial global implications and contributes to vascular inflammation and the onset of atherosclerotic cardiovascular diseases. However, translating the findings from animal models to humans has inherent limitations, necessitating a novel platform. Therefore, herein, an arterial model is established using a microphysiological system. This model successfully replicates the stratified characteristics of human arteries by integrating collagen, endothelial cells (ECs), and vascular smooth muscle cells (VSMCs). Perfusion via a peristaltic pump shows dynamic characteristics distinct from those of static culture models. High glucose, advanced glycation end products (AGEs), and interleukin-1 beta are employed to stimulate diabetic conditions, resulting in notable cellular changes and different levels of cytokines and nitric oxide. Additionally, the interactions between the disease models and oxidized low-density lipoproteins (LDL) are examined. Finally, the potential therapeutic effects of metformin, atorvastatin, and diphenyleneiodonium are investigated. Metformin and diphenyleneiodonium mitigate high-glucose- and AGE-associated pathological changes, whereas atorvastatin affects only the morphology of ECs. Altogether, the arterial model represents a pivotal advancement, offering a robust and insightful platform for investigating cardiovascular diseases and their corresponding drug development.
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Affiliation(s)
- Ungsig Nam
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Center for Scientific Instrumentation, Korea Basic Science Institute (KBSI), Daejeon, 34133, Republic of Korea
| | - Jaesang Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Hee-Gyeong Yi
- Department of Convergence Biosystems Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Jessie S Jeon
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
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5
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Zhang Y, O'Mahony A, He Y, Barber T. Hydrodynamic shear stress' impact on mammalian cell properties and its applications in 3D bioprinting. Biofabrication 2024; 16:022003. [PMID: 38277669 DOI: 10.1088/1758-5090/ad22ee] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 01/26/2024] [Indexed: 01/28/2024]
Abstract
As an effective cell assembly method, three-dimensional bioprinting has been widely used in building organ models and tissue repair over the past decade. However, different shear stresses induced throughout the entire printing process can cause complex impacts on cell integrity, including reducing cell viability, provoking morphological changes and altering cellular functionalities. The potential effects that may occur and the conditions under which these effects manifest are not clearly understood. Here, we review systematically how different mammalian cells respond under shear stress. We enumerate available experimental apparatus, and we categorise properties that can be affected under disparate stress patterns. We also summarise cell damaging mathematical models as a predicting reference for the design of bioprinting systems. We concluded that it is essential to quantify specific cell resistance to shear stress for the optimisation of bioprinting systems. Besides, as substantial positive impacts, including inducing cell alignment and promoting cell motility, can be generated by shear stress, we suggest that we find the proper range of shear stress and actively utilise its positive influences in the development of future systems.
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Affiliation(s)
- Yani Zhang
- School of Mechanical Engineering, UNSW, Sydney, NSW 2052, Australia
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Aidan O'Mahony
- Inventia Life Science Pty Ltd, Alexandria, Sydney, NSW 2015, Australia
| | - Yong He
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Tracie Barber
- School of Mechanical Engineering, UNSW, Sydney, NSW 2052, Australia
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Van Daele L, Van de Voorde B, Colenbier R, De Vos L, Parmentier L, Van der Meeren L, Skirtach A, Dmitriev RI, Dubruel P, Van Vlierberghe S. Effect of molar mass and alkyl chain length on the surface properties and biocompatibility of poly(alkylene terephthalate)s for potential cardiovascular applications. J Mater Chem B 2023; 11:10158-10173. [PMID: 37850250 DOI: 10.1039/d3tb01889j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
Cardiovascular diseases are the leading cause of death worldwide. Treatments for occluded arteries include balloon angioplasty with or without stenting and bypass grafting surgery. Poly(ethylene terephthalate) is frequently used as a vascular graft material, but its high stiffness leads to compliance mismatch with the human blood vessels, resulting in altered hemodynamics, thrombus formation and graft failure. Poly(alkylene terephthalate)s (PATs) with longer alkyl chain lengths hold great potential for improving the compliance. In this work, the effect of the polymer molar mass and the alkyl chain length on the surface roughness and wettability of spin-coated PAT films was investigated, as well as the endothelial cell adhesion and proliferation on these samples. We found that surface roughness generally increases with increasing molar mass and alkyl chain length, while no trend for the wettability could be observed. All investigated PATs are non-cytotoxic and support endothelial cell adhesion and growth. For some PATs, the endothelial cells even reorganized into a tubular-like structure, suggesting angiogenic maturation. In conclusion, this research demonstrates the biocompatibility of PATs and their potential to be applied as materials serving cardiovascular applications.
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Affiliation(s)
- Lenny Van Daele
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
| | - Babs Van de Voorde
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
| | - Robin Colenbier
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
- Tissue engineering and Biomaterials Group, Department of Human structure and repair, Faculty of Medicine and Health Sciences, Ghent University, C. Heymanslaan 10, 6B3, UZP123, 9000 Ghent, Belgium
| | - Lobke De Vos
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
| | - Laurens Parmentier
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
| | - Louis Van der Meeren
- Department of Biotechnology, Ghent University, Proeftuinstraat 86, 9000 Ghent, Belgium
| | - André Skirtach
- Department of Biotechnology, Ghent University, Proeftuinstraat 86, 9000 Ghent, Belgium
| | - Ruslan I Dmitriev
- Tissue engineering and Biomaterials Group, Department of Human structure and repair, Faculty of Medicine and Health Sciences, Ghent University, C. Heymanslaan 10, 6B3, UZP123, 9000 Ghent, Belgium
| | - Peter Dubruel
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium.
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7
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Walther BK, Sears AP, Mojiri A, Avazmohammadi R, Gu J, Chumakova OV, Pandian NKR, Dominic A, Martiel JL, Yazdani SK, Cooke JP, Ohayon J, Pettigrew RI. Disrupted Stiffness Ratio Alters Nuclear Mechanosensing. MATTER 2023; 6:3608-3630. [PMID: 37937235 PMCID: PMC10627551 DOI: 10.1016/j.matt.2023.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
The ability of endothelial cells to sense and respond to dynamic changes in blood flow is critical for vascular homeostasis and cardiovascular health. The mechanical and geometric properties of the nuclear and cytoplasmic compartments affect mechanotransduction. We hypothesized that alterations to these parameters have resulting mechanosensory consequences. Using atomic force microscopy and mathematical modeling, we assessed how the nuclear and cytoplasmic compartment stiffnesses modulate shear stress transfer to the nucleus within aging endothelial cells. Our computational studies revealed that the critical parameter controlling shear transfer is not the individual mechanics of these compartments, but the stiffness ratio between them. Replicatively aged cells had a reduced stiffness ratio, attenuating shear transfer, while the ratio was not altered in a genetic model of accelerated aging. We provide a theoretical framework suggesting that dysregulation of the shear stress response can be uniquely imparted by relative mechanical changes in subcellular compartments.
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Affiliation(s)
- Brandon K. Walther
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
- Texas A&M University, Department of Biomedical Engineering, College Station, TX 77843, USA
| | - Adam P. Sears
- Texas A&M University, Department of Biomedical Engineering, College Station, TX 77843, USA
- Houston Methodist Hospital, Houston, TX 77030, USA
| | - Anahita Mojiri
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Reza Avazmohammadi
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
- Texas A&M University, Department of Biomedical Engineering, College Station, TX 77843, USA
- Texas A&M University, Department of Mechanical Engineering, College Station, TX 77843, USA
| | - Jianhua Gu
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Olga V. Chumakova
- University of Texas Health Science Center, Department of Integrative Biology and Pharmacology, Houston, TX 77030, USA
| | | | - Abishai Dominic
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
| | | | - Saami K. Yazdani
- Wake Forest University, Department of Engineering, Winston-Salem, NC 27101, USA
| | - John P. Cooke
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
- Texas A&M University, Department of Biomedical Engineering, College Station, TX 77843, USA
| | - Jacques Ohayon
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
- University Grenoble Alpes, CNRS, TIMC UMR 5525, 38000 Grenoble, France
- Savoie Mont-Blanc University, Polytech Annecy-Chambéry, 73376 Le Bourget du Lac, France
| | - Roderic I. Pettigrew
- Center for Cardiovascular Regeneration, Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX 77030, USA
- Texas A&M University, Department of Biomedical Engineering, College Station, TX 77843, USA
- Houston Methodist Hospital, Houston, TX 77030, USA
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Qu K, Wang C, Huang L, Qin X, Zhang K, Qiu J, Wang G. Oscillatory shear stress-induced downregulation of TET1s injures vascular endothelial planar cell polarity by suppression of actin polymerization. APL Bioeng 2023; 7:036104. [PMID: 37533755 PMCID: PMC10393427 DOI: 10.1063/5.0141289] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 05/29/2023] [Indexed: 08/04/2023] Open
Abstract
Vascular endothelial polarity induced by blood flow plays crucial roles in the development of atherosclerosis. Loss of endothelial polarity leads to an increase in permeability and leukocyte recruitment, which are crucial hallmarks of atherosclerotic initiation. Endothelial cells exhibit a morphological adaptation to hemodynamic shear stress and possesses planar cell polarity to the direction of blood flow. However, the mechanism of how hemodynamic shear stress regulates endothelial planar cell polarity has not been firmly established. Here, we found that TET1s, a short isoform of Tet methylcytosine dioxygenase 1, was a mediator in the regulation of the planar cell polarity in endothelial cells in response to hemodynamic shear stress. In the process, low expression of TET1s induced by oscillatory shear stress led to the endothelial planar polarity damage through inhibition of F-actin polymerization. TET1s can regulate demethylation level of the sFRP-1 promoter to alter the expression of sFRP-1, which affects the interaction of sFRP-1/Fzd4 and F-actin polymerization. Our study revealed the mechanism of how TET1s mediates endothelial planar cell polarity in response to hemodynamic shear stress and provides a new insight for the prevention of atherosclerosis.
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Affiliation(s)
| | - Caihong Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, China
| | | | | | | | - Juhui Qiu
- Authors to whom correspondence should be addressed: and
| | - Guixue Wang
- Authors to whom correspondence should be addressed: and
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9
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Lin MH, Linares I, Ramirez C, Ramirez YC, Sarkar D. Mechanomorphological Guidance of Colloidal Gel Regulates Cell Morphogenesis. Macromol Biosci 2023; 23:e2300122. [PMID: 37143285 PMCID: PMC10524704 DOI: 10.1002/mabi.202300122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/30/2023] [Indexed: 05/06/2023]
Abstract
Microstructural morphology of the extracellular matrix guides the organization of cells in 3D. However, current biomaterials-based matrices cannot provide distinct spatial cues through their microstructural morphology due to design constraints. To address this, colloidal gels are developed as 3D matrices with distinct microstructure by aggregating ionic polyurethane colloids via electrostatic screening. Due to the defined orientation of interconnected particles, positively charged colloids form extended strands resulting in a dense microstructure whereas negatively charged colloids form compact aggregates with localized large voids. Chondrogenesis of human mesenchymal stem cells (MSCs) and endothelial morphogenesis of human endothelial cells (ECs) are examined in these colloidal gels. MSCs show enhanced chondrogenic response in dense colloidal gel due to their spatial organization achieved by balancing the cell-cell and cell-matrix interactions compared to porous gels where cells are mainly clustered. ECs tend to form relatively elongated cellular networks in dense colloidal gel compared to porous gels. Additionally, the role of matrix stiffness and viscoelasticity in the morphogenesis of MSCs and ECs are analyzed with respect to microstructural morphology. Overall, these results demonstrate that colloidal gels can provide spatial cues through their microstructural morphology and in correlation with matrix mechanics for cell morphogenesis.
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Affiliation(s)
- Meng Hsuan Lin
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Isabelle Linares
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Cesar Ramirez
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Yanni Correa Ramirez
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Debanjan Sarkar
- Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
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10
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Kutluk H, Bastounis EE, Constantinou I. Integration of Extracellular Matrices into Organ-on-Chip Systems. Adv Healthc Mater 2023; 12:e2203256. [PMID: 37018430 DOI: 10.1002/adhm.202203256] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/20/2023] [Indexed: 04/07/2023]
Abstract
The extracellular matrix (ECM) is a complex, dynamic network present within all tissues and organs that not only acts as a mechanical support and anchorage point but can also direct fundamental cell behavior, function, and characteristics. Although the importance of the ECM is well established, the integration of well-controlled ECMs into Organ-on-Chip (OoC) platforms remains challenging and the methods to modulate and assess ECM properties on OoCs remain underdeveloped. In this review, current state-of-the-art design and assessment of in vitro ECM environments is discussed with a focus on their integration into OoCs. Among other things, synthetic and natural hydrogels, as well as polydimethylsiloxane (PDMS) used as substrates, coatings, or cell culture membranes are reviewed in terms of their ability to mimic the native ECM and their accessibility for characterization. The intricate interplay among materials, OoC architecture, and ECM characterization is critically discussed as it significantly complicates the design of ECM-related studies, comparability between works, and reproducibility that can be achieved across research laboratories. Improving the biomimetic nature of OoCs by integrating properly considered ECMs would contribute to their further adoption as replacements for animal models, and precisely tailored ECM properties would promote the use of OoCs in mechanobiology.
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Affiliation(s)
- Hazal Kutluk
- Institute of Microtechnology (IMT), Technical University of Braunschweig, Alte Salzdahlumer Str. 203, 38124, Braunschweig, Germany
- Center of Pharmaceutical Engineering (PVZ), Technical University of Braunschweig, Franz-Liszt-Str. 35a, 38106, Braunschweig, Germany
| | - Effie E Bastounis
- Institute of Microbiology and Infection Medicine (IMIT), Eberhard Karls University of Tübingen, Auf der Morgenstelle 28, E8, 72076, Tübingen, Germany
- Cluster of Excellence "Controlling Microbes to Fight Infections" EXC 2124, Eberhard Karls University of Tübingen, Auf der Morgenstelle 28, 72076, Tübingen, Germany
| | - Iordania Constantinou
- Institute of Microtechnology (IMT), Technical University of Braunschweig, Alte Salzdahlumer Str. 203, 38124, Braunschweig, Germany
- Center of Pharmaceutical Engineering (PVZ), Technical University of Braunschweig, Franz-Liszt-Str. 35a, 38106, Braunschweig, Germany
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11
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Shou Y, Teo XY, Wu KZ, Bai B, Kumar ARK, Low J, Le Z, Tay A. Dynamic Stimulations with Bioengineered Extracellular Matrix-Mimicking Hydrogels for Mechano Cell Reprogramming and Therapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2300670. [PMID: 37119518 PMCID: PMC10375194 DOI: 10.1002/advs.202300670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/10/2023] [Indexed: 06/19/2023]
Abstract
Cells interact with their surrounding environment through a combination of static and dynamic mechanical signals that vary over stimulus types, intensity, space, and time. Compared to static mechanical signals such as stiffness, porosity, and topography, the current understanding on the effects of dynamic mechanical stimulations on cells remains limited, attributing to a lack of access to devices, the complexity of experimental set-up, and data interpretation. Yet, in the pursuit of emerging translational applications (e.g., cell manufacturing for clinical treatment), it is crucial to understand how cells respond to a variety of dynamic forces that are omnipresent in vivo so that they can be exploited to enhance manufacturing and therapeutic outcomes. With a rising appreciation of the extracellular matrix (ECM) as a key regulator of biofunctions, researchers have bioengineered a suite of ECM-mimicking hydrogels, which can be fine-tuned with spatiotemporal mechanical cues to model complex static and dynamic mechanical profiles. This review first discusses how mechanical stimuli may impact different cellular components and the various mechanobiology pathways involved. Then, how hydrogels can be designed to incorporate static and dynamic mechanical parameters to influence cell behaviors are described. The Scopus database is also used to analyze the relative strength in evidence, ranging from strong to weak, based on number of published literatures, associated citations, and treatment significance. Additionally, the impacts of static and dynamic mechanical stimulations on clinically relevant cell types including mesenchymal stem cells, fibroblasts, and immune cells, are evaluated. The aim is to draw attention to the paucity of studies on the effects of dynamic mechanical stimuli on cells, as well as to highlight the potential of using a cocktail of various types and intensities of mechanical stimulations to influence cell fates (similar to the concept of biochemical cocktail to direct cell fate). It is envisioned that this progress report will inspire more exciting translational development of mechanoresponsive hydrogels for biomedical applications.
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Affiliation(s)
- Yufeng Shou
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
- Institute for Health Innovation and Technology, National University of Singapore, Singapore, 117599, Singapore
| | - Xin Yong Teo
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
| | - Kenny Zhuoran Wu
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
| | - Bingyu Bai
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
| | - Arun R K Kumar
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
- Institute for Health Innovation and Technology, National University of Singapore, Singapore, 117599, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
| | - Jessalyn Low
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
| | - Zhicheng Le
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
- Institute for Health Innovation and Technology, National University of Singapore, Singapore, 117599, Singapore
| | - Andy Tay
- Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore
- Institute for Health Innovation and Technology, National University of Singapore, Singapore, 117599, Singapore
- NUS Tissue Engineering Program, National University of Singapore, Singapore, 117510, Singapore
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12
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Tian F, Yin L, Lin P, Liu Y, Wang W, Chen Y, Tang Y. Aligned Nanofibrous Net Deposited Perpendicularly on Microridges Supports Endothelium Formation and Promotes the Structural Maturation of hiPSC-Derived Cardiomyocytes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17518-17531. [PMID: 36992621 DOI: 10.1021/acsami.2c22551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Cell alignment widely exists in various in vivo tissues and also plays an essential role in the construction of in vitro models, such as vascular endothelial and myocardial models. Recently, microscale and nanoscale hierarchical topographical structures have been drawing increasing attention for engineering in vitro cell alignment. In the present study, we fabricated a micro-/nanohierarchical substrate based on soft lithography and electrospinning to assess the synergetic effect of both the aligned nanofibrous topographical guidance and the off-ground culture environment provided by the substrate on the endothelium formation and the maturation of human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs). The morphology, proliferation, and barrier formation of human umbilical vein endothelial cells (HUVECs) as well as the alignment, cardiac-specific proteins, and maturity-related gene expression of hiPSC-CMs on the aligned-nanofiber/microridge (AN-MR) substrate were studied. Compared with the glass slide and the single-aligned nanofiber substrate, the AN-MR substrate enhanced the proliferation, alignment, and cell-cell interaction of HUVECs and improved the length of the sarcomere and maturation-related gene expression of hiPSC-CMs. Finally, the response of hiPSC-CMs on different substrates to two typical cardiac drugs (isoproterenol and E-4031) was tested and analyzed, showing that the hiPSC-CMs on AN-MR substrates were more resistant to drugs than those in other groups, which was related to the higher maturity of the cells. Overall, the proposed micro-/nanohierarchical substrate supports the in vitro endothelium formation and enhances the maturation of hiPSC-CMs, which show great potential to be applied in the construction of in vitro models and tissue engineering.
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Affiliation(s)
- Feng Tian
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Linlin Yin
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Peiran Lin
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Yurong Liu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Wenlong Wang
- School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Yong Chen
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 24 Rue Lhomond, Paris 75005, France
| | - Yadong Tang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
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13
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Davis MJ, Earley S, Li YS, Chien S. Vascular mechanotransduction. Physiol Rev 2023; 103:1247-1421. [PMID: 36603156 PMCID: PMC9942936 DOI: 10.1152/physrev.00053.2021] [Citation(s) in RCA: 45] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 09/26/2022] [Accepted: 10/04/2022] [Indexed: 01/07/2023] Open
Abstract
This review aims to survey the current state of mechanotransduction in vascular smooth muscle cells (VSMCs) and endothelial cells (ECs), including their sensing of mechanical stimuli and transduction of mechanical signals that result in the acute functional modulation and longer-term transcriptomic and epigenetic regulation of blood vessels. The mechanosensors discussed include ion channels, plasma membrane-associated structures and receptors, and junction proteins. The mechanosignaling pathways presented include the cytoskeleton, integrins, extracellular matrix, and intracellular signaling molecules. These are followed by discussions on mechanical regulation of transcriptome and epigenetics, relevance of mechanotransduction to health and disease, and interactions between VSMCs and ECs. Throughout this review, we offer suggestions for specific topics that require further understanding. In the closing section on conclusions and perspectives, we summarize what is known and point out the need to treat the vasculature as a system, including not only VSMCs and ECs but also the extracellular matrix and other types of cells such as resident macrophages and pericytes, so that we can fully understand the physiology and pathophysiology of the blood vessel as a whole, thus enhancing the comprehension, diagnosis, treatment, and prevention of vascular diseases.
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Affiliation(s)
- Michael J Davis
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, Missouri
| | - Scott Earley
- Department of Pharmacology, University of Nevada, Reno, Nevada
| | - Yi-Shuan Li
- Department of Bioengineering, University of California, San Diego, California
- Institute of Engineering in Medicine, University of California, San Diego, California
| | - Shu Chien
- Department of Bioengineering, University of California, San Diego, California
- Institute of Engineering in Medicine, University of California, San Diego, California
- Department of Medicine, University of California, San Diego, California
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14
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Ryltseva GA, Dudaev AE, Menzyanova NG, Volova TG, Alexandrushkina NA, Efimenko AY, Shishatskaya EI. Influence of PHA Substrate Surface Characteristics on the Functional State of Endothelial Cells. J Funct Biomater 2023; 14:jfb14020085. [PMID: 36826884 PMCID: PMC9959859 DOI: 10.3390/jfb14020085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/24/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
The needs of modern regenerative medicine for biodegradable polymers are wide and varied. Restoration of the viability of the vascular tree is one of the most important components of the preservation of the usefulness of organs and tissues. The creation of vascular implants compatible with blood is an important task of vascular bioengineering. The function of the endothelial layer of the vessel, being largely responsible for the development of thrombotic complications, is of great importance for hemocompatibility. The development of surfaces with specific characteristics of biomaterials that are used in vascular technologies is one of the solutions for their correct endothelialization. Linear polyhydroxyalkanoates (PHAs) are biodegradable structural polymeric materials suitable for obtaining various types of implants and tissue engineering, having a wide range of structural and physicomechanical properties. The use of PHA of various monomeric compositions in endothelial cultivation makes it possible to evaluate the influence of material properties, especially surface characteristics, on the functional state of cells. It has been established that PHA samples with the inclusion of 3-hydroxyhexanoate have optimal characteristics for the formation of a human umbilical vein endothelial cell, HUVEC, monolayer in terms of cell morphology as well as the levels of expression of vinculin and VE-cadherin. The obtained results provide a rationale for the use of PHA copolymers as materials for direct contact with the endothelium in vascular implants.
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Affiliation(s)
- Galina A. Ryltseva
- Department of Medical Biology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia
- Correspondence: (G.A.R.); (E.I.S.)
| | - Alexey E. Dudaev
- Department of Medical Biology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia
- Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
| | - Natalia G. Menzyanova
- Department of Medical Biology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia
| | - Tatiana G. Volova
- Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
- Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia
| | - Natalia A. Alexandrushkina
- Institute for Regenerative Medicine, Medical Research and Education Center, M.V. Lomonosov Moscow State University, 119192 Moscow, Russia
| | - Anastasia Yu. Efimenko
- Institute for Regenerative Medicine, Medical Research and Education Center, M.V. Lomonosov Moscow State University, 119192 Moscow, Russia
| | - Ekaterina I. Shishatskaya
- Department of Medical Biology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., 660041 Krasnoyarsk, Russia
- Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, 660036 Krasnoyarsk, Russia
- Correspondence: (G.A.R.); (E.I.S.)
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15
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Hamrangsekachaee M, Wen K, Bencherif SA, Ebong EE. Atherosclerosis and endothelial mechanotransduction: current knowledge and models for future research. Am J Physiol Cell Physiol 2023; 324:C488-C504. [PMID: 36440856 PMCID: PMC10069965 DOI: 10.1152/ajpcell.00449.2022] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/16/2022] [Accepted: 11/20/2022] [Indexed: 11/29/2022]
Abstract
Endothelium health is essential to the regulation of physiological vascular functions. Because of the critical capability of endothelial cells (ECs) to sense and transduce chemical and mechanical signals in the local vascular environment, their dysfunction is associated with a vast variety of vascular diseases and injuries, especially atherosclerosis and subsequent cardiovascular diseases. This review describes the mechanotransduction events that are mediated through ECs, the EC subcellular components involved, and the pathways reported to be potentially involved. Up-to-date research efforts involving in vivo animal models and in vitro biomimetic models are also discussed, including their advantages and drawbacks, with recommendations on future modeling approaches to aid the development of novel therapies targeting atherosclerosis and related cardiovascular diseases.
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Affiliation(s)
| | - Ke Wen
- Chemical Engineering Department, Northeastern University, Boston, Massachusetts
| | - Sidi A Bencherif
- Chemical Engineering Department, Northeastern University, Boston, Massachusetts
- Bioengineering Department, Northeastern University, Boston, Massachusetts
- Laboratoire de BioMécanique et BioIngénierie, UMR CNRS 7388, Sorbonne Universités, Université de Technologie of Compiègne, Compiègne, France
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts
| | - Eno E Ebong
- Chemical Engineering Department, Northeastern University, Boston, Massachusetts
- Bioengineering Department, Northeastern University, Boston, Massachusetts
- Neuroscience Department, Albert Einstein College of Medicine, New York, New York
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16
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Aguilar VM, Paul A, Lazarko D, Levitan I. Paradigms of endothelial stiffening in cardiovascular disease and vascular aging. Front Physiol 2023; 13:1081119. [PMID: 36714307 PMCID: PMC9874005 DOI: 10.3389/fphys.2022.1081119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/22/2022] [Indexed: 01/13/2023] Open
Abstract
Endothelial cells, the inner lining of the blood vessels, are well-known to play a critical role in vascular function, while endothelial dysfunction due to different cardiovascular risk factors or accumulation of disruptive mechanisms that arise with aging lead to cardiovascular disease. In this review, we focus on endothelial stiffness, a fundamental biomechanical property that reflects cell resistance to deformation. In the first part of the review, we describe the mechanisms that determine endothelial stiffness, including RhoA-dependent contractile response, actin architecture and crosslinking, as well as the contributions of the intermediate filaments, vimentin and lamin. Then, we review the factors that induce endothelial stiffening, with the emphasis on mechanical signals, such as fluid shear stress, stretch and stiffness of the extracellular matrix, which are well-known to control endothelial biomechanics. We also describe in detail the contribution of lipid factors, particularly oxidized lipids, that were also shown to be crucial in regulation of endothelial stiffness. Furthermore, we discuss the relative contributions of these two mechanisms of endothelial stiffening in vasculature in cardiovascular disease and aging. Finally, we present the current state of knowledge about the role of endothelial stiffening in the disruption of endothelial cell-cell junctions that are responsible for the maintenance of the endothelial barrier.
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Affiliation(s)
- Victor M. Aguilar
- Department of Medicine, Division of Pulmonary and Critical Care, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States,Richard and Loan Hill Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, IL, United States
| | - Amit Paul
- Department of Medicine, Division of Pulmonary and Critical Care, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Dana Lazarko
- Department of Medicine, Division of Pulmonary and Critical Care, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Irena Levitan
- Department of Medicine, Division of Pulmonary and Critical Care, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States,Richard and Loan Hill Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, IL, United States,*Correspondence: Irena Levitan,
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17
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Barrasa-Ramos S, Dessalles CA, Hautefeuille M, Barakat AI. Mechanical regulation of the early stages of angiogenesis. J R Soc Interface 2022; 19:20220360. [PMID: 36475392 PMCID: PMC9727679 DOI: 10.1098/rsif.2022.0360] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Favouring or thwarting the development of a vascular network is essential in fields as diverse as oncology, cardiovascular disease or tissue engineering. As a result, understanding and controlling angiogenesis has become a major scientific challenge. Mechanical factors play a fundamental role in angiogenesis and can potentially be exploited for optimizing the architecture of the resulting vascular network. Largely focusing on in vitro systems but also supported by some in vivo evidence, the aim of this Highlight Review is dual. First, we describe the current knowledge with particular focus on the effects of fluid and solid mechanical stimuli on the early stages of the angiogenic process, most notably the destabilization of existing vessels and the initiation and elongation of new vessels. Second, we explore inherent difficulties in the field and propose future perspectives on the use of in vitro and physics-based modelling to overcome these difficulties.
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Affiliation(s)
- Sara Barrasa-Ramos
- LadHyX, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
| | - Claire A. Dessalles
- LadHyX, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
| | - Mathieu Hautefeuille
- Laboratoire de Biologie du Développement (UMR7622), Institut de Biologie Paris Seine, Sorbonne Université, Paris, France,Facultad de Ciencias, Universidad Nacional Autónoma de México, CDMX, Mexico
| | - Abdul I. Barakat
- LadHyX, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
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18
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Kong X, Kapustka A, Sullivan B, Schwarz GJ, Leckband DE. Extracellular matrix regulates force transduction at VE-cadherin junctions. Mol Biol Cell 2022; 33:ar95. [PMID: 35653290 DOI: 10.1091/mbc.e22-03-0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Increased tension on VE-cadherin (VE-cad) complexes activates adaptive cell stiffening and local cytoskeletal reinforcement--two key signatures of intercellular mechanotransduction. Here we demonstrate that tugging on VE-cad receptors initiates a cascade that results in downstream integrin activation. The formation of new integrin adhesions potentiates vinculin and actin recruitment to mechanically reinforce stressed cadherin adhesions. This cascade differs from documented antagonistic effects of integrins on intercellular junctions. We identify focal adhesion kinase, Abl kinase, and RhoA GTPase as key components of the positive feedback loop. Results further show that a consequence of integrin involvement is the sensitization of intercellular force transduction to the extracellular matrix (ECM) not by regulating junctional tension but by altering signal cascades that reinforce cell-cell adhesions. On type 1 collagen or fibronectin substrates, integrin subtypes α2β1 and α5β1, respectively, differentially control actin remodeling at VE-cad adhesions. Specifically, ECM-dependent differences in VE-cad force transduction mirror differences in the rigidity sensing mechanisms of α2β1 and α5β1 integrins. The findings verify the role of integrins in VE-cad force transduction and uncover a previously unappreciated mechanism by which the ECM impacts the mechanical reinforcement of interendothelial junctions.
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Affiliation(s)
- Xinyu Kong
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Adrian Kapustka
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Brendan Sullivan
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Gregory J Schwarz
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Deborah E Leckband
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801.,Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801.,Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801.,Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801
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19
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Ma C, Du T, Niu X, Fan Y. Biomechanics and mechanobiology of the bone matrix. Bone Res 2022; 10:59. [PMID: 36042209 PMCID: PMC9427992 DOI: 10.1038/s41413-022-00223-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 05/13/2022] [Accepted: 05/27/2022] [Indexed: 11/23/2022] Open
Abstract
The bone matrix plays an indispensable role in the human body, and its unique biomechanical and mechanobiological properties have received much attention. The bone matrix has unique mechanical anisotropy and exhibits both strong toughness and high strength. These mechanical properties are closely associated with human life activities and correspond to the function of bone in the human body. None of the mechanical properties exhibited by the bone matrix is independent of its composition and structure. Studies on the biomechanics of the bone matrix can provide a reference for the preparation of more applicable bone substitute implants, bone biomimetic materials and scaffolds for bone tissue repair in humans, as well as for biomimetic applications in other fields. In providing mechanical support to the human body, bone is constantly exposed to mechanical stimuli. Through the study of the mechanobiology of the bone matrix, the response mechanism of the bone matrix to its surrounding mechanical environment can be elucidated and used for the health maintenance of bone tissue and defect regeneration. This paper summarizes the biomechanical properties of the bone matrix and their biological significance, discusses the compositional and structural basis by which the bone matrix is capable of exhibiting these mechanical properties, and studies the effects of mechanical stimuli, especially fluid shear stress, on the components of the bone matrix, cells and their interactions. The problems that occur with regard to the biomechanics and mechanobiology of the bone matrix and the corresponding challenges that may need to be faced in the future are also described.
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Affiliation(s)
- Chunyang Ma
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Tianming Du
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, China
| | - Xufeng Niu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China. .,Research Institute of Beihang University in Shenzhen, Shenzhen, 518057, China.
| | - Yubo Fan
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China. .,School of Engineering Medicine, Beihang University, Beijing, 100083, China.
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20
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Flournoy J, Ashkanani S, Chen Y. Mechanical regulation of signal transduction in angiogenesis. Front Cell Dev Biol 2022; 10:933474. [PMID: 36081909 PMCID: PMC9447863 DOI: 10.3389/fcell.2022.933474] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 07/28/2022] [Indexed: 11/21/2022] Open
Abstract
Biophysical and biochemical cues work in concert to regulate angiogenesis. These cues guide angiogenesis during development and wound healing. Abnormal cues contribute to pathological angiogenesis during tumor progression. In this review, we summarize the known signaling pathways involved in mechanotransduction important to angiogenesis. We discuss how variation in the mechanical microenvironment, in terms of stiffness, ligand availability, and topography, can modulate the angiogenesis process. We also present an integrated view on how mechanical perturbations, such as stretching and fluid shearing, alter angiogenesis-related signal transduction acutely, leading to downstream gene expression. Tissue engineering-based approaches to study angiogenesis are reviewed too. Future directions to aid the efforts in unveiling the comprehensive picture of angiogenesis are proposed.
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Affiliation(s)
- Jennifer Flournoy
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, United States
- Center for Cell Dynamics, Johns Hopkins University, Baltimore, MD, United States
- Institute for NanoBio Technology, Johns Hopkins University, Baltimore, MD, United States
| | - Shahad Ashkanani
- Center for Cell Dynamics, Johns Hopkins University, Baltimore, MD, United States
- Institute for NanoBio Technology, Johns Hopkins University, Baltimore, MD, United States
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, United States
| | - Yun Chen
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, United States
- Center for Cell Dynamics, Johns Hopkins University, Baltimore, MD, United States
- Institute for NanoBio Technology, Johns Hopkins University, Baltimore, MD, United States
- *Correspondence: Yun Chen,
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21
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He Y, Qin C, Sun Z, Liu Z, Chen Y, Meng K. Atomic force microscopy application to study of the biomechanical properties of the aortic intima in the context of early atherosclerosis. Microsc Res Tech 2022; 85:3411-3417. [PMID: 35804436 DOI: 10.1002/jemt.24196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 06/17/2022] [Accepted: 06/24/2022] [Indexed: 11/11/2022]
Abstract
Atherosclerosis is characterized by the infiltration of macrophages, accumulation of lipids, activation of endothelial cells and synthesis of extracellular matrix by vascular smooth muscle cells. However, there have been few atomic force microscopy (AFM) studies of the aortic intima in situ in the context of atherosclerosis. By employing a customized liquid cell for AFM, we investigated the aortic intima obtained from male C57BL/6 ApoE-deficient mice (ApoE-/- ) aged 14 weeks and male C57BL/6 ApoE-sufficient mice (ApoE+/+ ) aged between 18 and 26 weeks that were fed a high-fat and high-cholesterol diet for 4 weeks and performed force spectroscopy mapping of the biomechanical properties of the intima. In the aortas of ApoE-deficient mice, the intima became stiffer than that of ApoE-sufficient mice. In addition, the cytoskeleton of endothelial cells was enlarged, and extracellular matrix accumulated. The biomechanical properties of the aortic intima are altered in early atherogenesis, which may be induced by the enlargement of the endothelial cell cytoskeleton and the increased synthesis of extracellular matrix by activated smooth muscle cells.
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Affiliation(s)
- Yin He
- Emergency Department, Capital Medical University Affiliated Anzhen Hospital, Beijing, China
| | - Chuanyu Qin
- Department of Cardiology of Second Affiliated Hospital of Qiqihaer Medical Collage, Qiqihar, Heilongjiang, People's Republic of China
| | - Zhifu Sun
- Otolaryngology Head and Neck Surgery, Capital Medical University Affiliated Anzhen Hospital, Beijing, China
| | - Zesen Liu
- Department of Cardiology of Luhe Hospital, Capital Medical University, Beijing, China
| | - Yan Chen
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Kang Meng
- Department of Cardiology, Capital Medical University Affiliated Anzhen Hospital, Beijing, China
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22
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Pahapale GJ, Tao J, Nikolic M, Gao S, Scarcelli G, Sun SX, Romer LH, Gracias DH. Directing Multicellular Organization by Varying the Aspect Ratio of Soft Hydrogel Microwells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104649. [PMID: 35434926 PMCID: PMC9189654 DOI: 10.1002/advs.202104649] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 03/08/2022] [Indexed: 06/03/2023]
Abstract
Multicellular organization with precise spatial definition is essential to various biological processes, including morphogenesis, development, and healing in vascular and other tissues. Gradients and patterns of chemoattractants are well-described guides of multicellular organization, but the influences of 3D geometry of soft hydrogels are less well defined. Here, the discovery of a new mode of endothelial cell self-organization guided by combinatorial effects of stiffness and geometry, independent of protein or chemical patterning, is described. Endothelial cells in 2 kPa microwells are found to be ≈30 times more likely to migrate to the edge to organize in ring-like patterns than in stiff 35 kPa microwells. This organization is independent of curvature and significantly more pronounced in 2 kPa microwells with aspect ratio (perimeter/depth) < 25. Physical factors of cells and substrates that drive this behavior are systematically investigated and a mathematical model that explains the organization by balancing the dynamic interaction between tangential cytoskeletal tension, cell-cell, and cell-substrate adhesion is presented. These findings demonstrate the importance of combinatorial effects of geometry and stiffness in complex cellular organization that can be leveraged to facilitate the engineering of bionics and integrated model organoid systems with customized nutrient vascular networks.
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Affiliation(s)
- Gayatri J. Pahapale
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMD21218USA
| | - Jiaxiang Tao
- Department of Mechanical EngineeringJohns Hopkins UniversityBaltimoreMD21218USA
| | - Milos Nikolic
- Maryland Biophysics ProgramInstitute for Physical Science and TechnologyUniversity of MarylandCollege ParkMD20742USA
| | - Sammy Gao
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMD21218USA
| | - Giuliano Scarcelli
- Maryland Biophysics ProgramInstitute for Physical Science and Technology and Fischell Department of BioengineeringUniversity of MarylandCollege ParkMD20742USA
| | - Sean X. Sun
- Department of Mechanical EngineeringCell Biologyand Institute of NanoBioTechnology (INBT)Johns Hopkins UniversityBaltimoreMD21218USA
| | - Lewis H. Romer
- Department of Cell BiologyAnesthesiology and Critical Care MedicineBiomedical EngineeringPediatricsand Center for Cell DynamicsJohns Hopkins School of MedicineBaltimoreMD21205USA
| | - David H. Gracias
- Department of Chemical and Biomolecular EngineeringMaterials Science and EngineeringChemistry and Laboratory for Computational Sensing and Robotics (LCSR)Johns Hopkins UniversityBaltimoreMD21218USA
- Department of Oncology and Sidney Kimmel Comprehensive Cancer CenterJohns Hopkins School of MedicineBaltimoreMD21205USA
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23
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Hiroshima Y, Oyama Y, Sawasaki K, Nakamura M, Kimura N, Kawahito K, Fujie H, Sakamoto N. A Compressed Collagen Construct for Studying Endothelial-Smooth Muscle Cell Interaction Under High Shear Stress. Ann Biomed Eng 2022; 50:951-963. [PMID: 35471673 DOI: 10.1007/s10439-022-02972-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 04/18/2022] [Indexed: 11/29/2022]
Abstract
The coculture of vascular endothelial cells (ECs) on collagen gels containing smooth muscle cells (SMCs) has been carried out to investigate cellular interactions associated with blood vessel pathophysiology under wall shear stress (WSS) conditions. However, due to a lack of gel stiffness, the previous collagen gel coculture constructs are difficult to use for pathologic higher WSS conditions. Here, we newly constructed a coculture model with centrifugally compressed cell-collagen combined construct (C6), which withstands higher WSS conditions. The elastic modulus of C6 was approximately 6 times higher than that of the uncompressed collagen construct. The level of α-smooth muscle actin, a contractile SMC phenotype marker observed in healthy arteries, was elevated in C6 compared with that of the uncompressed construct, and further increased by exposure to a physiological level WSS of 2 Pa, but not by a pathological level of 20 Pa. WSS conditions of 2 and 20 Pa also induced different expression ratios of matrix metalloproteinases and their inhibitors in the C6 coculture model but did not in monocultured ECs and SMCs. The C6 coculture model will be a powerful tool to investigate interactions between ECs and SMCs under pathologically high WSS conditions.
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Affiliation(s)
- Yuya Hiroshima
- Department of Cardiovascular Surgery, Jichi Medical University, Yakushiji 3311-1, Shimotsuke, Tochigi, 329-0498, Japan
| | - Yuki Oyama
- Department of Mechanical Systems Engineering, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo, 192-0397, Japan
| | - Kaoru Sawasaki
- Department of Mechanical Systems Engineering, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo, 192-0397, Japan
| | - Masanori Nakamura
- Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, 466-8555, Japan
| | - Naoyuki Kimura
- Department of Cardiovascular Surgery, Saitama Medical Center, Jichi Medical University, Amanuma 1-847, Omiya, Saitama, 330-834, Japan
| | - Koji Kawahito
- Department of Cardiovascular Surgery, Jichi Medical University, Yakushiji 3311-1, Shimotsuke, Tochigi, 329-0498, Japan
| | - Hiromichi Fujie
- Department of Mechanical Systems Engineering, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo, 192-0397, Japan.,Research Center for Medicine-Engineering Collaboration, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo, 192-0397, Japan
| | - Naoya Sakamoto
- Department of Mechanical Systems Engineering, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo, 192-0397, Japan. .,Research Center for Medicine-Engineering Collaboration, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo, 192-0397, Japan.
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24
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Jang EH, Kim JH, Ryu JY, Lee J, Kim HH, Youn YN. Time-dependent pathobiological and physiological changes of implanted vein grafts in a canine model. J Cardiovasc Transl Res 2022; 15:1108-1118. [PMID: 35244875 DOI: 10.1007/s12265-022-10226-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 02/23/2022] [Indexed: 12/01/2022]
Abstract
Although autologous vein grafting is essential, the high vein failure rate and specific clinical interventions are not clear, so a potential treatment is critically needed; thus, complex analyses of the relationship between pathobiological and physiological processes in preclinical are essential. The interposition of the femoral vein was performed in a canine model. Maximized expansion and velocity were measured at 8 weeks post-implantation, and a relative decrease was observed at 12 weeks. However, NI formation and NI/Media ratio significantly increased time dependently, and differences between the mechanical properties were observed. Additionally, RhoA-mediated TNF-α induced by rapid structural changes and high shear stress was confirmed. After adaptation to the arterial environment, vascular remodeling occurred by SMC proliferation and differentiation, apoptosis and autophagy were induced through YAP activity without vasodilation and RhoA activity. Our results show that understanding pathobiological processes in which time-dependent physiological changes contribute to vein failure can lead to a potential strategy. The implanted vein graft within the arterial environment undergoes pathobiological processes through RhoA and YAP activity, leading to pathophysiological changes.
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Affiliation(s)
- Eui Hwa Jang
- Division of Cardiovascular Surgery, Department of Thoracic and Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jung-Hwan Kim
- Division of Cardiovascular Surgery, Department of Thoracic and Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Ji-Yeon Ryu
- Division of Cardiovascular Surgery, Department of Thoracic and Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jiyong Lee
- Department of Mechanical Engineering, YONSEI University, Seoul, 03722, South Korea
| | - Hyo-Hyun Kim
- Division of Cardiovascular Surgery, Department of Thoracic and Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Young-Nam Youn
- Division of Cardiovascular Surgery, Department of Thoracic and Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanro, Seodaemun-gu, Seoul, 03722, South Korea.
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25
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Seymour AJ, Westerfield AD, Cornelius VC, Skylar-Scott MA, Heilshorn SC. Bioprinted microvasculature: progressing from structure to function. Biofabrication 2022; 14:10.1088/1758-5090/ac4fb5. [PMID: 35086069 PMCID: PMC8988885 DOI: 10.1088/1758-5090/ac4fb5] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 01/27/2022] [Indexed: 11/12/2022]
Abstract
Three-dimensional (3D) bioprinting seeks to unlock the rapid generation of complex tissue constructs, but long-standing challenges with efficientin vitromicrovascularization must be solved before this can become a reality. Microvasculature is particularly challenging to biofabricate due to the presence of a hollow lumen, a hierarchically branched network topology, and a complex signaling milieu. All of these characteristics are required for proper microvascular-and, thus, tissue-function. While several techniques have been developed to address distinct portions of this microvascularization challenge, no single approach is capable of simultaneously recreating all three microvascular characteristics. In this review, we present a three-part framework that proposes integration of existing techniques to generate mature microvascular constructs. First, extrusion-based 3D bioprinting creates a mesoscale foundation of hollow, endothelialized channels. Second, biochemical and biophysical cues induce endothelial sprouting to create a capillary-mimetic network. Third, the construct is conditioned to enhance network maturity. Across all three of these stages, we highlight the potential for extrusion-based bioprinting to become a central technique for engineering hierarchical microvasculature. We envision that the successful biofabrication of functionally engineered microvasculature will address a critical need in tissue engineering, and propel further advances in regenerative medicine andex vivohuman tissue modeling.
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Affiliation(s)
- Alexis J. Seymour
- Department of Bioengineering, Stanford University, 443 Via Ortega, Shriram Center Room 119, Stanford, CA 94305, USA
| | - Ashley D. Westerfield
- Department of Bioengineering, Stanford University, 443 Via Ortega, Shriram Center Room 119, Stanford, CA 94305, USA
| | - Vincent C. Cornelius
- Department of Bioengineering, Stanford University, 443 Via Ortega, Shriram Center Room 119, Stanford, CA 94305, USA
| | - Mark A. Skylar-Scott
- Department of Bioengineering, Stanford University, 443 Via Ortega, Shriram Center Room 119, Stanford, CA 94305, USA
| | - Sarah C. Heilshorn
- Department of Materials Science & Engineering, Stanford University, 476 Lomita Mall, McCullough Room 246, Stanford, CA 94305, USA,Author to whom any correspondence should be addressed.
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26
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Fallon ME, Mathews R, Hinds MT. In Vitro Flow Chamber Design for the Study of Endothelial Cell (Patho)Physiology. J Biomech Eng 2022; 144:020801. [PMID: 34254640 PMCID: PMC8628846 DOI: 10.1115/1.4051765] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 07/06/2021] [Indexed: 02/03/2023]
Abstract
In the native vasculature, flowing blood produces a frictional force on vessel walls that affects endothelial cell function and phenotype. In the arterial system, the vasculature's local geometry directly influences variations in flow profiles and shear stress magnitudes. Straight arterial sections with pulsatile shear stress have been shown to promote an athero-protective endothelial phenotype. Conversely, areas with more complex geometry, such as arterial bifurcations and branch points with disturbed flow patterns and lower, oscillatory shear stress, typically lead to endothelial dysfunction and the pathogenesis of cardiovascular diseases. Many studies have investigated the regulation of endothelial responses to various shear stress environments. Importantly, the accurate in vitro simulation of in vivo hemodynamics is critical to the deeper understanding of mechanotransduction through the proper design and use of flow chamber devices. In this review, we describe several flow chamber apparatuses and their fluid mechanics design parameters, including parallel-plate flow chambers, cone-and-plate devices, and microfluidic devices. In addition, chamber-specific design criteria and relevant equations are defined in detail for the accurate simulation of shear stress environments to study endothelial cell responses.
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Affiliation(s)
- Meghan E. Fallon
- Department of Biomedical Engineering, Oregon Health & Science University, 3303 S Bond Ave CH13B, Portland, OR 97239
| | - Rick Mathews
- Department of Biomedical Engineering, Oregon Health & Science University, 3303 S Bond Ave CH13B, Portland, OR 97239
| | - Monica T. Hinds
- Department of Biomedical Engineering, Oregon Health & Science University, 3303 S Bond Ave CH13B, Portland, OR 97239
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27
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Gifre-Renom L, Daems M, Luttun A, Jones EAV. Organ-Specific Endothelial Cell Differentiation and Impact of Microenvironmental Cues on Endothelial Heterogeneity. Int J Mol Sci 2022; 23:ijms23031477. [PMID: 35163400 PMCID: PMC8836165 DOI: 10.3390/ijms23031477] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 02/04/2023] Open
Abstract
Endothelial cells throughout the body are heterogeneous, and this is tightly linked to the specific functions of organs and tissues. Heterogeneity is already determined from development onwards and ranges from arterial/venous specification to microvascular fate determination in organ-specific differentiation. Acknowledging the different phenotypes of endothelial cells and the implications of this diversity is key for the development of more specialized tissue engineering and vascular repair approaches. However, although novel technologies in transcriptomics and proteomics are facilitating the unraveling of vascular bed-specific endothelial cell signatures, still much research is based on the use of insufficiently specialized endothelial cells. Endothelial cells are not only heterogeneous, but their specialized phenotypes are also dynamic and adapt to changes in their microenvironment. During the last decades, strong collaborations between molecular biology, mechanobiology, and computational disciplines have led to a better understanding of how endothelial cells are modulated by their mechanical and biochemical contexts. Yet, because of the use of insufficiently specialized endothelial cells, there is still a huge lack of knowledge in how tissue-specific biomechanical factors determine organ-specific phenotypes. With this review, we want to put the focus on how organ-specific endothelial cell signatures are determined from development onwards and conditioned by their microenvironments during adulthood. We discuss the latest research performed on endothelial cells, pointing out the important implications of mimicking tissue-specific biomechanical cues in culture.
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Affiliation(s)
- Laia Gifre-Renom
- Centre for Molecular and Vascular Biology, Department of Cardiovascular Sciences, Katholieke Universiteit Leuven (KU Leuven), BE-3000 Leuven, Belgium; (L.G.-R.); (M.D.); (A.L.)
| | - Margo Daems
- Centre for Molecular and Vascular Biology, Department of Cardiovascular Sciences, Katholieke Universiteit Leuven (KU Leuven), BE-3000 Leuven, Belgium; (L.G.-R.); (M.D.); (A.L.)
| | - Aernout Luttun
- Centre for Molecular and Vascular Biology, Department of Cardiovascular Sciences, Katholieke Universiteit Leuven (KU Leuven), BE-3000 Leuven, Belgium; (L.G.-R.); (M.D.); (A.L.)
| | - Elizabeth A. V. Jones
- Centre for Molecular and Vascular Biology, Department of Cardiovascular Sciences, Katholieke Universiteit Leuven (KU Leuven), BE-3000 Leuven, Belgium; (L.G.-R.); (M.D.); (A.L.)
- Department of Cardiology, CARIM School for Cardiovascular Diseases, Maastricht University, 6229 ER Maastricht, The Netherlands
- Correspondence:
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28
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van Santen VJB, Klein-Nulend J, Bakker AD, Jaspers RT. Stiff matrices enhance myoblast proliferation, reduce differentiation, and alter the response to fluid shear stress in vitro. Cell Biochem Biophys 2022; 80:161-170. [DOI: 10.1007/s12013-021-01050-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2021] [Indexed: 11/03/2022]
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29
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Brandt MM, Cheng C, Merkus D, Duncker DJ, Sorop O. Mechanobiology of Microvascular Function and Structure in Health and Disease: Focus on the Coronary Circulation. Front Physiol 2022; 12:771960. [PMID: 35002759 PMCID: PMC8733629 DOI: 10.3389/fphys.2021.771960] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 11/11/2021] [Indexed: 12/19/2022] Open
Abstract
The coronary microvasculature plays a key role in regulating the tight coupling between myocardial perfusion and myocardial oxygen demand across a wide range of cardiac activity. Short-term regulation of coronary blood flow in response to metabolic stimuli is achieved via adjustment of vascular diameter in different segments of the microvasculature in conjunction with mechanical forces eliciting myogenic and flow-mediated vasodilation. In contrast, chronic adjustments in flow regulation also involve microvascular structural modifications, termed remodeling. Vascular remodeling encompasses changes in microvascular diameter and/or density being largely modulated by mechanical forces acting on the endothelium and vascular smooth muscle cells. Whereas in recent years, substantial knowledge has been gathered regarding the molecular mechanisms controlling microvascular tone and how these are altered in various diseases, the structural adaptations in response to pathologic situations are less well understood. In this article, we review the factors involved in coronary microvascular functional and structural alterations in obstructive and non-obstructive coronary artery disease and the molecular mechanisms involved therein with a focus on mechanobiology. Cardiovascular risk factors including metabolic dysregulation, hypercholesterolemia, hypertension and aging have been shown to induce microvascular (endothelial) dysfunction and vascular remodeling. Additionally, alterations in biomechanical forces produced by a coronary artery stenosis are associated with microvascular functional and structural alterations. Future studies should be directed at further unraveling the mechanisms underlying the coronary microvascular functional and structural alterations in disease; a deeper understanding of these mechanisms is critical for the identification of potential new targets for the treatment of ischemic heart disease.
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Affiliation(s)
- Maarten M Brandt
- Division of Experimental Cardiology, Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Caroline Cheng
- Division of Experimental Cardiology, Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Division of Internal Medicine and Dermatology, Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, Netherlands
| | - Daphne Merkus
- Division of Experimental Cardiology, Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Walter Brendel Center of Experimental Medicine (WBex), LMU Munich, Munich, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance (MHA), Munich, Germany
| | - Dirk J Duncker
- Division of Experimental Cardiology, Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Oana Sorop
- Division of Experimental Cardiology, Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
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30
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Lage JGB, Bortolotto AL, Scanavacca MI, Bortolotto LA, Darrieux FCDC. Arterial stiffness and atrial fibrillation: A review. Clinics (Sao Paulo) 2022; 77:100014. [PMID: 35248986 PMCID: PMC8903742 DOI: 10.1016/j.clinsp.2022.100014] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 11/30/2021] [Indexed: 01/07/2023] Open
Abstract
Arterial stiffness has been investigated as part of the physiopathology of arterial hypertension since the 1970s. Its role in increasing the "pulsatile load" imposed over the Left Ventricle (LV) has been intensely studied recently and has helped in understanding the mechanisms of Atrial Fibrillation (AF) in hypertensive patients. This paper aims to review the main evidence on this issue and establish possible mechanisms involved in the development of AF in patients with arterial stiffness. A PubMed search was performed, and selected articles were searched for references focusing on this topic. In the long term, lower blood pressure levels allow for arterial wall remodeling, leading to a lower stiffness index. To this day, however, there are no available treatments that directly promote the lowering of arterial wall stiffness. Most classes of anti-hypertensive drugs ‒ with stronger evidence for beta-blockers and diuretics ‒ could be effective in reducing arterial stiffness. There is strong evidence demonstrating an association between arterial stiffness and AF. New studies focusing on arterial stiffness and pre-fibrillatory stages would strengthen this causality relation.
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Affiliation(s)
- João Gabriel Batista Lage
- Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil.
| | - Alexandre Lemos Bortolotto
- Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil
| | - Mauricio Ibrahim Scanavacca
- Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil
| | - Luiz Aparecido Bortolotto
- Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil
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31
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Long RKM, Piatti L, Korbmacher F, Bernabeu M. Understanding parasite-brain microvascular interactions with engineered 3D blood-brain barrier models. Mol Microbiol 2021; 117:693-704. [PMID: 34837419 DOI: 10.1111/mmi.14852] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 01/25/2023]
Abstract
Microbial interactions with the blood-brain barrier (BBB) can be highly pathogenic and are still not well understood. Among these, parasites present complex interactions with the brain microvasculature that are difficult to decipher using experimental animal models or reductionist 2D in vitro cultures. Novel 3D engineered blood-brain barrier models hold great promise to overcome limitations in traditional research approaches. These models better mimic the intricate 3D architecture of the brain microvasculature and recapitulate several aspects of BBB properties, physiology, and function. Moreover, they provide improved control over biophysical and biochemical experimental parameters and are compatible with advanced imaging and molecular biology techniques. Here, we review design considerations and methodologies utilized to successfully engineer BBB microvessels. Finally, we highlight the advantages and limitations of existing engineered models and propose applications to study parasite interactions with the BBB, including mechanisms of barrier disruption.
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Affiliation(s)
- Rory K M Long
- European Molecular Biology Laboratory (EMBL) Barcelona, Barcelona, Spain
| | - Livia Piatti
- European Molecular Biology Laboratory (EMBL) Barcelona, Barcelona, Spain
| | | | - Maria Bernabeu
- European Molecular Biology Laboratory (EMBL) Barcelona, Barcelona, Spain
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32
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Mehraj U, Ganai RA, Macha MA, Hamid A, Zargar MA, Bhat AA, Nasser MW, Haris M, Batra SK, Alshehri B, Al-Baradie RS, Mir MA, Wani NA. The tumor microenvironment as driver of stemness and therapeutic resistance in breast cancer: New challenges and therapeutic opportunities. Cell Oncol (Dordr) 2021; 44:1209-1229. [PMID: 34528143 DOI: 10.1007/s13402-021-00634-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2021] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Breast cancer (BC), the second most common cause of cancer-related deaths, remains a significant threat to the health and wellness of women worldwide. The tumor microenvironment (TME), comprising cellular components, such as cancer-associated fibroblasts (CAFs), immune cells, endothelial cells and adipocytes, and noncellular components such as extracellular matrix (ECM), has been recognized as a critical contributor to the development and progression of BC. The interplay between TME components and cancer cells promotes phenotypic heterogeneity, cell plasticity and cancer cell stemness that impart tumor dormancy, enhanced invasion and metastasis, and the development of therapeutic resistance. While most previous studies have focused on targeting cancer cells with a dismal prognosis, novel therapies targeting stromal components are currently being evaluated in preclinical and clinical studies, and are already showing improved efficacies. As such, they may offer better means to eliminate the disease effectively. CONCLUSIONS In this review, we focus on the evolving concept of the TME as a key player regulating tumor growth, metastasis, stemness, and the development of therapeutic resistance. Despite significant advances over the last decade, several clinical trials focusing on the TME have failed to demonstrate promising effectiveness in cancer patients. To expedite clinical efficacy of TME-directed therapies, a deeper understanding of the TME is of utmost importance. Secondly, the efficacy of TME-directed therapies when used alone or in combination with chemo- or radiotherapy, and the tumor stage needs to be studied. Likewise, identifying molecular signatures and biomarkers indicating the type of TME will help in determining precise TME-directed therapies.
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Affiliation(s)
- Umar Mehraj
- Department of Bioresources, University of Kashmir, Srinagar, Jammu & Kashmir, India
| | - Rais A Ganai
- Watson-Crick Centre for Molecular Medicine, Islamic University of Science & Technology , Awantipora, Jammu & Kashmir, India
| | - Muzafar A Macha
- Watson-Crick Centre for Molecular Medicine, Islamic University of Science & Technology , Awantipora, Jammu & Kashmir, India
| | - Abid Hamid
- Department of Biotechnology, School of Life Sciences, Central University of Kashmir, Ganderbal, J&K, India
| | - Mohammed A Zargar
- Department of Biotechnology, School of Life Sciences, Central University of Kashmir, Ganderbal, J&K, India
| | - Ajaz A Bhat
- Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar
| | - Mohd Wasim Nasser
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Mohammad Haris
- Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar.,Laboratory of Animal Research, Qatar University, Doha, Qatar
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.,Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska, Lincoln, NE, USA.,Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Bader Alshehri
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Almajmaah, Kingdom of Saudi Arabia
| | - Raid Saleem Al-Baradie
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Almajmaah, Kingdom of Saudi Arabia
| | - Manzoor A Mir
- Department of Bioresources, University of Kashmir, Srinagar, Jammu & Kashmir, India.
| | - Nissar Ahmad Wani
- Department of Biotechnology, School of Life Sciences, Central University of Kashmir, Ganderbal, J&K, India.
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33
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Yu H, Kang D, Whang M, Kim T, Kim J. A Microfluidic Model Artery for Studying the Mechanobiology of Endothelial Cells. Adv Healthc Mater 2021; 10:e2100508. [PMID: 34297476 DOI: 10.1002/adhm.202100508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/25/2021] [Indexed: 11/07/2022]
Abstract
Recent vascular mechanobiology studies find that endothelial cells (ECs) convert multiple mechanical forces into functional responses in a nonadditive way, suggesting that signaling pathways such as those regulating cytoskeleton may be shared among the processes of converting individual forces. However, previous in vitro EC-culture platforms are inherent with extraneous mechanical components, which may saturate or insufficiently activate the shared signaling pathways and accordingly, may misguide EC mechanobiological responses being investigated. Here, a more physiologically relevant model artery is reported that accurately reproduces most of the mechanical forces found in vivo, which can be individually varied in any combination to pathological levels to achieve diseased states. Arterial geometries of normal and diseased states are also realized. By mimicking mechanical microenvironments of early-stage atherosclerosis, it is demonstrated that the elevated levels of the different types of stress experienced by ECs strongly correlate with the disruption of barrier integrity, suggesting that boundaries of an initial lesion could be sites for efficient disease progression.
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Affiliation(s)
- Hyeonji Yu
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, Republic of Korea
| | - Dongwon Kang
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, Republic of Korea
| | - Minji Whang
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, Republic of Korea
| | - Taeyoung Kim
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, Republic of Korea
| | - Jungwook Kim
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, Republic of Korea
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34
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James BD, Allen JB. Sex-Specific Response to Combinations of Shear Stress and Substrate Stiffness by Endothelial Cells In Vitro. Adv Healthc Mater 2021; 10:e2100735. [PMID: 34142471 PMCID: PMC8458248 DOI: 10.1002/adhm.202100735] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Indexed: 12/25/2022]
Abstract
By using a full factorial design of experiment, the combinatorial effects of biological sex, shear stress, and substrate stiffness on human umbilical vein endothelial cell (HUVEC) spreading and Yes-associated protein 1 (YAP1) activity are able to be efficiently evaluated. Within the range of shear stress (0.5-1.5 Pa) and substrate stiffness (10-100 kPa), male HUVECs are smaller than female HUVECs. Only with sufficient mechanical stimulation do they spread to a similar size. More importantly, YAP1 nuclear localization in female HUVECs is invariant to mechanical stimulation within the range of tested conditions whereas for male HUVECs it increases nonlinearly with increasing shear stress and substrate stiffness. The sex-specific response of HUVECs to combinations of shear stress and substrate stiffness reinforces the need to include sex as a biological variable and multiple mechanical stimuli in experiments, informs the design of precision biomaterials, and offers insight for understanding cardiovascular disease sexual dimorphisms. Moreover, here it is illustrated that different complex mechanical microenvironments can lead to sex-specific phenotypes and sex invariant phenotypes in cultured endothelial cells.
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Affiliation(s)
- Bryan D James
- Department of Materials Science and Engineering, University of Florida, 206 Rhines Hall, PO Box 116400, Gainesville, FL, 32611-6400, USA
| | - Josephine B Allen
- Department of Materials Science and Engineering, University of Florida, 206 Rhines Hall, PO Box 116400, Gainesville, FL, 32611-6400, USA
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35
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Geng X, Ho YC, Srinivasan RS. Biochemical and mechanical signals in the lymphatic vasculature. Cell Mol Life Sci 2021; 78:5903-5923. [PMID: 34240226 PMCID: PMC11072415 DOI: 10.1007/s00018-021-03886-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 06/15/2021] [Accepted: 06/18/2021] [Indexed: 12/15/2022]
Abstract
Lymphatic vasculature is an integral part of the cardiovascular system where it maintains interstitial fluid balance. Additionally, lymphatic vasculature regulates lipid assimilation and inflammatory response. Lymphatic vasculature is composed of lymphatic capillaries, collecting lymphatic vessels and valves that function in synergy to absorb and transport fluid against gravitational and pressure gradients. Defects in lymphatic vessels or valves leads to fluid accumulation in tissues (lymphedema), chylous ascites, chylothorax, metabolic disorders and inflammation. The past three decades of research has identified numerous molecules that are necessary for the stepwise development of lymphatic vasculature. However, approaches to treat lymphatic disorders are still limited to massages and compression bandages. Hence, better understanding of the mechanisms that regulate lymphatic vascular development and function is urgently needed to develop efficient therapies. Recent research has linked mechanical signals such as shear stress and matrix stiffness with biochemical pathways that regulate lymphatic vessel growth, patterning and maturation and valve formation. The goal of this review article is to highlight these innovative developments and speculate on unanswered questions.
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Affiliation(s)
- Xin Geng
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, 73013, USA
| | - Yen-Chun Ho
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, 73013, USA
| | - R Sathish Srinivasan
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, 73013, USA.
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73117, USA.
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36
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Dessalles CA, Leclech C, Castagnino A, Barakat AI. Integration of substrate- and flow-derived stresses in endothelial cell mechanobiology. Commun Biol 2021; 4:764. [PMID: 34155305 PMCID: PMC8217569 DOI: 10.1038/s42003-021-02285-w] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 06/02/2021] [Indexed: 02/05/2023] Open
Abstract
Endothelial cells (ECs) lining all blood vessels are subjected to large mechanical stresses that regulate their structure and function in health and disease. Here, we review EC responses to substrate-derived biophysical cues, namely topography, curvature, and stiffness, as well as to flow-derived stresses, notably shear stress, pressure, and tensile stresses. Because these mechanical cues in vivo are coupled and are exerted simultaneously on ECs, we also review the effects of multiple cues and describe burgeoning in vitro approaches for elucidating how ECs integrate and interpret various mechanical stimuli. We conclude by highlighting key open questions and upcoming challenges in the field of EC mechanobiology.
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Affiliation(s)
- Claire A Dessalles
- LadHyX, CNRS, Ecole polytechnique, Institut polytechnique de Paris, Palaiseau, France
| | - Claire Leclech
- LadHyX, CNRS, Ecole polytechnique, Institut polytechnique de Paris, Palaiseau, France
| | - Alessia Castagnino
- LadHyX, CNRS, Ecole polytechnique, Institut polytechnique de Paris, Palaiseau, France
| | - Abdul I Barakat
- LadHyX, CNRS, Ecole polytechnique, Institut polytechnique de Paris, Palaiseau, France.
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37
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Li Y, Qin Z, Zhou L, Shahzad KA, Xia D. Collective influence of substrate chemistry with physiological fluid shear stress on human umbilical vein endothelial cells. Cell Biol Int 2021; 45:1926-1934. [PMID: 34009727 DOI: 10.1002/cbin.11632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 03/29/2021] [Accepted: 05/16/2021] [Indexed: 11/06/2022]
Abstract
In the treatment of cardiovascular diseases, vascular scaffold materials play an extremely important role. The appropriate substrate chemistries and 15 dynes/cm2 physiological fluid shear stress (FSS) are both required to ensure normal physiological activity of human umbilical vein endothelial cells (HUVECs). The present study reported the collective influence of substrate chemistries and FSS on HUVECs in the sense of its biological functions. The CH3 , NH2 , and OH functional groups were adopted to offer a variety of substrate chemistries on glass slides by the technology of self-assembled monolayers, whereas FSS was generated by a parallel-plate fluid flow system. Substrate chemistries on its own by no means had noticeable effects on eNOS, ATP, NO, and PGI2 expressions, while FSS stimuli enhanced their production. While substrate chemistries, as well as FSS, were both exerted, the releases of ATP, NO, and PGI2 were dependent on substrate chemistries. Study of F-actin organization and focal adhesions (FAs) formation of HUVECs before FSS exposure proves that F-action organization and FAs formation followed similar chemistry-dependence. Hereby proposed a feasible mechanism, that is, the F-actin organization and FAs formation of HUVECs are controlled by substrate chemistries, further advancing the modulation of FSS-triggered responses of HUVECs.
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Affiliation(s)
- Yan Li
- School of Pharmacy, Taizhou Polytechnic College, Taizhou, China.,Bone Tissue Engineering Research Center of Taizhou, Taizhou, China
| | - Zhongjie Qin
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of South-west Medical University, Luzhou, China.,Orofacial Reconstruction and Regeneration, Laboratory, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou, China
| | - Lin Zhou
- School of Pharmacy, Taizhou Polytechnic College, Taizhou, China.,Bone Tissue Engineering Research Center of Taizhou, Taizhou, China
| | - Khawar Ali Shahzad
- School of Pharmacy, Taizhou Polytechnic College, Taizhou, China.,Department of Zoology, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Delin Xia
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of South-west Medical University, Luzhou, China.,Orofacial Reconstruction and Regeneration, Laboratory, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou, China.,Plastic and Maxillofacial Surgery Department, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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38
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Li Z, Li JN, Li Q, Liu C, Zhou LH, Zhang Q, Xu Y. miR-25-5p regulates endothelial progenitor cell differentiation in response to shear stress through targeting ABCA1. Cell Biol Int 2021; 45:1876-1886. [PMID: 33945659 DOI: 10.1002/cbin.11621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 04/07/2021] [Accepted: 05/01/2021] [Indexed: 11/10/2022]
Abstract
The importance of flow shear stress (SS) on the differentiation of endothelial progenitor cells (EPCs) has been demonstrated in various studies. Cholesterol retention and microRNA regulation have been also proposed as relevant factors involved in this process, though evidence regarding their regulatory roles in the differentiation of EPCs is currently lacking. In the present study on high shear stress (HSS)-induced differentiation of EPCs, we investigated the importance of ATP-binding cassette transporter 1 (ABCA1), an important regulator in cholesterol efflux, and miR-25-5p, a potential regulator of endothelial reconstruction. We first revealed an inverse correlation between miR-25-5p and ABCA1 expression levels in EPCs under HSS treatment; their direct interaction was subsequently validated by a dual-luciferase reporter assay. Further studies using flow cytometry and quantitative polymerase chain reaction demonstrated that both miR-25-5p overexpression and ABCA1 inhibition led to elevated levels of specific markers of endothelial cells, with concomitant downregulation of smooth muscle cell markers. Finally, knockdown of ABCA1 in EPCs significantly promoted tube formation, which confirmed our conjecture. Our current results suggest that miR-25-5p might regulate the differentiation of EPCs partially through targeting ABCA1, and such a mechanism might account for HSS-induced differentiation of EPCs.
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Affiliation(s)
- Zhe Li
- Department of Cerebrovascular Diseases, Blue Cross Brain Hospital affiliated to Tongji University, Shanghai, China
| | - Jia-Nan Li
- Department of Neurosurgery, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Qiang Li
- Department of Neurosurgery, Changhai Hospital of Shanghai affiliated to Naval Military Medical University, Shanghai, China
| | - Chun Liu
- Department of Cerebrovascular Diseases, Blue Cross Brain Hospital affiliated to Tongji University, Shanghai, China
| | - Lin-Hua Zhou
- Department of Cerebrovascular Diseases, Blue Cross Brain Hospital affiliated to Tongji University, Shanghai, China
| | - Qi Zhang
- Department of Cerebrovascular Diseases, Blue Cross Brain Hospital affiliated to Tongji University, Shanghai, China
| | - Yi Xu
- Department of Neurosurgery, Changhai Hospital of Shanghai affiliated to Naval Military Medical University, Shanghai, China
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Urschel K, Tauchi M, Achenbach S, Dietel B. Investigation of Wall Shear Stress in Cardiovascular Research and in Clinical Practice-From Bench to Bedside. Int J Mol Sci 2021; 22:5635. [PMID: 34073212 PMCID: PMC8198948 DOI: 10.3390/ijms22115635] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 05/20/2021] [Accepted: 05/22/2021] [Indexed: 12/16/2022] Open
Abstract
In the 1900s, researchers established animal models experimentally to induce atherosclerosis by feeding them with a cholesterol-rich diet. It is now accepted that high circulating cholesterol is one of the main causes of atherosclerosis; however, plaque localization cannot be explained solely by hyperlipidemia. A tremendous amount of studies has demonstrated that hemodynamic forces modify endothelial athero-susceptibility phenotypes. Endothelial cells possess mechanosensors on the apical surface to detect a blood stream-induced force on the vessel wall, known as "wall shear stress (WSS)", and induce cellular and molecular responses. Investigations to elucidate the mechanisms of this process are on-going: on the one hand, hemodynamics in complex vessel systems have been described in detail, owing to the recent progress in imaging and computational techniques. On the other hand, investigations using unique in vitro chamber systems with various flow applications have enhanced the understanding of WSS-induced changes in endothelial cell function and the involvement of the glycocalyx, the apical surface layer of endothelial cells, in this process. In the clinical setting, attempts have been made to measure WSS and/or glycocalyx degradation non-invasively, for the purpose of their diagnostic utilization. An increasing body of evidence shows that WSS, as well as serum glycocalyx components, can serve as a predicting factor for atherosclerosis development and, most importantly, for the rupture of plaques in patients with high risk of coronary heart disease.
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Affiliation(s)
| | | | | | - Barbara Dietel
- Department of Medicine 2—Cardiology and Angiology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Universitätsklinikum, 91054 Erlangen, Germany; (K.U.); (M.T.); (S.A.)
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40
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Mahmoud M, Mayer M, Cancel LM, Bartosch AM, Mathews R, Tarbell JM. The glycocalyx core protein Glypican 1 protects vessel wall endothelial cells from stiffness-mediated dysfunction and disease. Cardiovasc Res 2021; 117:1592-1605. [PMID: 32647868 PMCID: PMC8152694 DOI: 10.1093/cvr/cvaa201] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 05/22/2020] [Accepted: 07/02/2020] [Indexed: 12/25/2022] Open
Abstract
AIMS Arterial stiffness is an underlying risk factor and a hallmark of cardiovascular diseases. The endothelial cell (EC) glycocalyx is a glycan rich surface layer that plays a key role in protecting against EC dysfunction and vascular disease. However, the mechanisms by which arterial stiffness promotes EC dysfunction and vascular disease are not fully understood, and whether the mechanism involves the protective endothelial glycocalyx is yet to be determined. We hypothesized that endothelial glycocalyx protects the endothelial cells lining the vascular wall from dysfunction and disease in response to arterial stiffness. METHODS AND RESULTS Cells cultured on polyacrylamide (PA) gels of substrate stiffness 10 kPa (mimicking the subendothelial stiffness of aged, unhealthy arteries) showed a significant inhibition of glycocalyx expression compared to cells cultured on softer PA gels (2.5 kPa, mimicking the subendothelial stiffness of young, healthy arteries). Specifically, gene and protein analyses revealed that a glycocalyx core protein Glypican 1 was inhibited in cells cultured on stiff PA gels. These cells had enhanced endothelial cell dysfunction as determined by enhanced cell inflammation (enhanced inflammatory gene expression, monocyte adhesion, and inhibited nitric oxide expression), proliferation, and EndMT. Removal of Glypican 1 using gene-specific silencing with siRNA or gene overexpression using a plasmid revealed that Glypican 1 is required to protect against stiffness-mediated endothelial cell dysfunction. Consistent with this, using a model of age-mediated stiffness, older mice exhibited a reduced expression of Glypican 1 and enhanced endothelial cell dysfunction compared to young mice. Glypican 1 gene deletion in knockout mice (GPC1-/-) exacerbated endothelial dysfunction in young mice, which normally had high endothelial expression, but not in old mice that normally expressed low levels. Endothelial cell dysfunction was exacerbated in young, but not aged, Glypican 1 knockout mice (GPC1-/-). CONCLUSION Arterial stiffness promotes EC dysfunction and vascular disease at least partly through the suppression of the glycocalyx protein Glypican 1. Glypican 1 contributes to the protection against endothelial cell dysfunction and vascular disease in endothelial cells.
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Affiliation(s)
- Marwa Mahmoud
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Mariya Mayer
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Limary M Cancel
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Anne Marie Bartosch
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA
| | - Rick Mathews
- Oregon Health & Science University, School of Medicine, Portland, OR, USA
| | - John M Tarbell
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
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41
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Abstract
The endothelium is a crucial regulator of vascular homeostasis by controlling barrier integrity as well acting as an important signal transducer, thereby illustrating that endothelial cells are not inert cells. In the context of atherosclerosis, this barrier function is impaired and endothelial cells become activated, resulting in the upregulation of adhesion molecules, secretion of cytokines and chemokines and internalization of integrins. Finally, this leads to increased vessel permeability, thereby facilitating leukocyte extravasation as well as fostering a pro-inflammatory environment. Additionally, activated endothelial cells can form migrating tip cells and proliferative stalk cells, resulting in the formation of new blood vessels. Emerging evidence has accumulated indicating that cellular metabolism is crucial in fueling these pro-atherosclerotic processes, including neovascularization and inflammation, thereby contributing to plaque progression and altering plaque stability. Therefore, further research is necessary to unravel the complex mechanisms underlying endothelial cell metabolic changes, and exploit this knowledge for finding and developing potential future therapeutic strategies. In this review we discuss the metabolic alterations endothelial cells undergo in the context of inflammation and atherosclerosis and how this relates to changes in endothelial functioning. Finally, we will describe several metabolic targets that are currently being used for therapeutic interventions.
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42
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Dey K, Roca E, Ramorino G, Sartore L. Progress in the mechanical modulation of cell functions in tissue engineering. Biomater Sci 2021; 8:7033-7081. [PMID: 33150878 DOI: 10.1039/d0bm01255f] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In mammals, mechanics at multiple stages-nucleus to cell to ECM-underlie multiple physiological and pathological functions from its development to reproduction to death. Under this inspiration, substantial research has established the role of multiple aspects of mechanics in regulating fundamental cellular processes, including spreading, migration, growth, proliferation, and differentiation. However, our understanding of how these mechanical mechanisms are orchestrated or tuned at different stages to maintain or restore the healthy environment at the tissue or organ level remains largely a mystery. Over the past few decades, research in the mechanical manipulation of the surrounding environment-known as substrate or matrix or scaffold on which, or within which, cells are seeded-has been exceptionally enriched in the field of tissue engineering and regenerative medicine. To do so, traditional tissue engineering aims at recapitulating key mechanical milestones of native ECM into a substrate for guiding the cell fate and functions towards specific tissue regeneration. Despite tremendous progress, a big puzzle that remains is how the cells compute a host of mechanical cues, such as stiffness (elasticity), viscoelasticity, plasticity, non-linear elasticity, anisotropy, mechanical forces, and mechanical memory, into many biological functions in a cooperative, controlled, and safe manner. High throughput understanding of key cellular decisions as well as associated mechanosensitive downstream signaling pathway(s) for executing these decisions in response to mechanical cues, solo or combined, is essential to address this issue. While many reports have been made towards the progress and understanding of mechanical cues-particularly, substrate bulk stiffness and viscoelasticity-in regulating the cellular responses, a complete picture of mechanical cues is lacking. This review highlights a comprehensive view on the mechanical cues that are linked to modulate many cellular functions and consequent tissue functionality. For a very basic understanding, a brief discussion of the key mechanical players of ECM and the principle of mechanotransduction process is outlined. In addition, this review gathers together the most important data on the stiffness of various cells and ECM components as well as various tissues/organs and proposes an associated link from the mechanical perspective that is not yet reported. Finally, beyond addressing the challenges involved in tuning the interplaying mechanical cues in an independent manner, emerging advances in designing biomaterials for tissue engineering are also explored.
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Affiliation(s)
- Kamol Dey
- Department of Applied Chemistry and Chemical Engineering, Faculty of Science, University of Chittagong, Bangladesh
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43
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Walther BK, Rajeeva Pandian NK, Gold KA, Kiliç ES, Sama V, Gu J, Gaharwar AK, Guiseppi-Elie A, Cooke JP, Jain A. Mechanotransduction-on-chip: vessel-chip model of endothelial YAP mechanobiology reveals matrix stiffness impedes shear response. LAB ON A CHIP 2021; 21:1738-1751. [PMID: 33949409 PMCID: PMC9761985 DOI: 10.1039/d0lc01283a] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Endothelial mechanobiology is a key consideration in the progression of vascular dysfunction, including atherosclerosis. However mechanistic connections between the clinically associated physical stimuli, vessel stiffness and shear stress, and how they interact to modulate plaque progression remain incompletely characterized. Vessel-chip systems are excellent candidates for modeling vascular mechanobiology as they may be engineered from the ground up, guided by the mechanical parameters present in human arteries and veins, to recapitulate key features of the vasculature. Here, we report extensive validation of a vessel-chip model of endothelial yes-associated protein (YAP) mechanobiology, a protein sensitive to both matrix stiffness and shearing forces and, importantly, implicated in atherosclerotic progression. Our model captures the established endothelial mechanoresponse, with endothelial alignment, elongation, reduction of adhesion molecules, and YAP cytoplasmic retention under high laminar shear. Conversely, we observed disturbed morphology, inflammation, and nuclear partitioning under low, high, and high oscillatory shear. Examining targets of YAP transcriptional co-activation, connective tissue growth factor (CTGF) is strongly downregulated by high laminar shear, whereas it is strongly upregulated by low shear or oscillatory flow. Ankyrin repeat domain 1 (ANKRD1) is only upregulated by high oscillatory shear. Verteporfin inhibition of YAP reduced the expression of CTGF but did not affect ANKRD1. Lastly, substrate stiffness modulated the endothelial shear mechanoresponse. Under high shear, softer substrates showed the lowest nuclear localization of YAP whereas stiffer substrates increased nuclear localization. Low shear strongly increased nuclear localization of YAP across stiffnesses. Together, we have validated a model of endothelial mechanobiology and describe a clinically relevant biological connection between matrix stiffness, shear stress, and endothelial activation via YAP mechanobiology.
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Affiliation(s)
- Brandon K Walther
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, USA. and Department of Cardiovascular Sciences, Houston Methodist Institute for Academic Medicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, Texas 77030, USA.
| | | | - Karli A Gold
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, USA.
| | - Ecem S Kiliç
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, USA.
| | - Vineeth Sama
- Department of Biomedical Engineering, Clemson University, Clemson, South Carolina 29634, USA.
| | - Jianhua Gu
- Department of Cardiovascular Sciences, Houston Methodist Institute for Academic Medicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, Texas 77030, USA.
| | - Akhilesh K Gaharwar
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, USA. and Department of Materials Science, Texas A&M University, College Station, Texas 77843, USA
| | - Anthony Guiseppi-Elie
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, USA. and Department of Cardiovascular Sciences, Houston Methodist Institute for Academic Medicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, Texas 77030, USA. and ABTECH Scientific, Inc., Biotechnology Research Park, 800 East Leigh Street, Richmond, Virginia 23219, USA and Department of Biomedical Engineering, Anderson University, Anderson, South Carolina 29621, USA.
| | - John P Cooke
- Department of Cardiovascular Sciences, Houston Methodist Institute for Academic Medicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, Texas 77030, USA.
| | - Abhishek Jain
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843, USA. and Department of Cardiovascular Sciences, Houston Methodist Institute for Academic Medicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, Texas 77030, USA. and Department of Medical Physiology, College of Medicine, Texas A&M Health Science Center, Bryan, TX 77807, USA
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Inbody SC, Sinquefield BE, Lewis JP, Horton RE. Biomimetic microsystems for cardiovascular studies. Am J Physiol Cell Physiol 2021; 320:C850-C872. [PMID: 33760660 DOI: 10.1152/ajpcell.00026.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Traditional tissue culture platforms have been around for several decades and have enabled key findings in the cardiovascular field. However, these platforms failed to recreate the mechanical and dynamic features found within the body. Organs-on-chips (OOCs) are cellularized microfluidic-based devices that can mimic the basic structure, function, and responses of organs. These systems have been successfully utilized in disease, development, and drug studies. OOCs are designed to recapitulate the mechanical, electrical, chemical, and structural features of the in vivo microenvironment. Here, we review cardiovascular-themed OOC studies, design considerations, and techniques used to generate these cellularized devices. Furthermore, we will highlight the advantages of OOC models over traditional cell culture vessels, discuss implementation challenges, and provide perspectives on the state of the field.
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Affiliation(s)
- Shelby C Inbody
- Cardiovascular Tissue Engineering Laboratory, Biomedical Engineering Department, Cullen College of Engineering, University of Houston, Houston, Texas
| | - Bridgett E Sinquefield
- Cardiovascular Tissue Engineering Laboratory, Biomedical Engineering Department, Cullen College of Engineering, University of Houston, Houston, Texas
| | - Joshua P Lewis
- Cardiovascular Tissue Engineering Laboratory, Biomedical Engineering Department, Cullen College of Engineering, University of Houston, Houston, Texas
| | - Renita E Horton
- Cardiovascular Tissue Engineering Laboratory, Biomedical Engineering Department, Cullen College of Engineering, University of Houston, Houston, Texas
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Andelovic K, Winter P, Jakob PM, Bauer WR, Herold V, Zernecke A. Evaluation of Plaque Characteristics and Inflammation Using Magnetic Resonance Imaging. Biomedicines 2021; 9:185. [PMID: 33673124 PMCID: PMC7917750 DOI: 10.3390/biomedicines9020185] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 12/19/2022] Open
Abstract
Atherosclerosis is an inflammatory disease of large and medium-sized arteries, characterized by the growth of atherosclerotic lesions (plaques). These plaques often develop at inner curvatures of arteries, branchpoints, and bifurcations, where the endothelial wall shear stress is low and oscillatory. In conjunction with other processes such as lipid deposition, biomechanical factors lead to local vascular inflammation and plaque growth. There is also evidence that low and oscillatory shear stress contribute to arterial remodeling, entailing a loss in arterial elasticity and, therefore, an increased pulse-wave velocity. Although altered shear stress profiles, elasticity and inflammation are closely intertwined and critical for plaque growth, preclinical and clinical investigations for atherosclerosis mostly focus on the investigation of one of these parameters only due to the experimental limitations. However, cardiovascular magnetic resonance imaging (MRI) has been demonstrated to be a potent tool which can be used to provide insights into a large range of biological parameters in one experimental session. It enables the evaluation of the dynamic process of atherosclerotic lesion formation without the need for harmful radiation. Flow-sensitive MRI provides the assessment of hemodynamic parameters such as wall shear stress and pulse wave velocity which may replace invasive and radiation-based techniques for imaging of the vascular function and the characterization of early plaque development. In combination with inflammation imaging, the analyses and correlations of these parameters could not only significantly advance basic preclinical investigations of atherosclerotic lesion formation and progression, but also the diagnostic clinical evaluation for early identification of high-risk plaques, which are prone to rupture. In this review, we summarize the key applications of magnetic resonance imaging for the evaluation of plaque characteristics through flow sensitive and morphological measurements. The simultaneous measurements of functional and structural parameters will further preclinical research on atherosclerosis and has the potential to fundamentally improve the detection of inflammation and vulnerable plaques in patients.
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Affiliation(s)
- Kristina Andelovic
- Institute of Experimental Biomedicine, University Hospital Würzburg, 97080 Würzburg, Germany
- Experimental Physics V, University of Würzburg, 97074 Würzburg, Germany; (P.W.); (P.M.J.); (V.H.)
| | - Patrick Winter
- Experimental Physics V, University of Würzburg, 97074 Würzburg, Germany; (P.W.); (P.M.J.); (V.H.)
- Internal Medicine I, Cardiology, University Hospital Würzburg, 97080 Würzburg, Germany;
| | - Peter Michael Jakob
- Experimental Physics V, University of Würzburg, 97074 Würzburg, Germany; (P.W.); (P.M.J.); (V.H.)
| | - Wolfgang Rudolf Bauer
- Internal Medicine I, Cardiology, University Hospital Würzburg, 97080 Würzburg, Germany;
| | - Volker Herold
- Experimental Physics V, University of Würzburg, 97074 Würzburg, Germany; (P.W.); (P.M.J.); (V.H.)
| | - Alma Zernecke
- Institute of Experimental Biomedicine, University Hospital Würzburg, 97080 Würzburg, Germany
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Endogenous animal models of intracranial aneurysm development: a review. Neurosurg Rev 2021; 44:2545-2570. [PMID: 33501561 DOI: 10.1007/s10143-021-01481-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 01/05/2021] [Accepted: 01/18/2021] [Indexed: 12/13/2022]
Abstract
The pathogenesis and natural history of intracranial aneurysm (IA) remains poorly understood. To this end, animal models with induced cerebral vessel lesions mimicking human aneurysms have provided the ability to greatly expand our understanding. In this review, we comprehensively searched the published literature to identify studies that endogenously induced IA formation in animals. Studies that constructed aneurysms (i.e., by surgically creating a sac) were excluded. From the eligible studies, we reported information including the animal species, method for aneurysm induction, aneurysm definitions, evaluation methods, aneurysm characteristics, formation rate, rupture rate, and time course. Between 1960 and 2019, 174 articles reported endogenous animal models of IA. The majority used flow modification, hypertension, and vessel wall weakening (i.e., elastase treatment) to induce IAs, primarily in rats and mice. Most studies utilized subjective or qualitative descriptions to define experimental aneurysms and histology to study them. In general, experimental IAs resembled the pathobiology of the human disease in terms of internal elastic lamina loss, medial layer degradation, and inflammatory cell infiltration. After the early 2000s, many endogenous animal models of IA began to incorporate state-of-the-art technology, such as gene expression profiling and 9.4-T magnetic resonance imaging (MRI) in vivo imaging, to quantitatively analyze the biological mechanisms of IA. Future studies aimed at longitudinally assessing IA pathobiology in models that incorporate aneurysm growth will likely have the largest impact on our understanding of the disease. We believe this will be aided by high-resolution, small animal, survival imaging, in situ live-cell imaging, and next-generation omics technology.
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Agathe F, Yasuhiro N, Yukari SM, Tomomi F, Kaoru S, Matsusaki M. An in vitro self-organized three-dimensional model of the blood-brain barrier microvasculature. Biomed Mater 2020; 16:015006. [PMID: 33331293 DOI: 10.1088/1748-605x/aba5f1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The blood-brain barrier (BBB) protects the human brain from external aggression. Despite its great importance, very few in vitro models of the BBB reproducing its complex organization are available yet. Here we fabricated such a three-dimensional (3D) self-organized in vitro model of BBB microvasculature by means of a combination of collagen microfibers (CMF) and fibrin gel. The interconnected fibers supported human brain microvascular endothelial cell migration and the formation of a capillary-like network with a lumen diameter close to in vivo values. Fibrin, a protein involved in blood vessel repair, favored the further 3D conformation of the brain microvascular endothelial cells, astrocytes and pericytes, ensured gel cohesion and avoided shrinkage. The maturation of the BBB microvasculature network was stimulated by both the CMF and the fibrin in the hydrogel. The expression of essential tight-junction proteins, carriers and transporters was validated in regards to bidimensional simple coculture. The volume of gel drops was easily tunable to fit in 96-well plates. The cytotoxicity of D-Mannitol and its impacts on the microvascular network were evaluated, as an example of the pertinence of this 3D BBB capillary model for screening applications.
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Affiliation(s)
- Figarol Agathe
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, Japan
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Rajendan AK, Arisaka Y, Yui N, Iseki S. Polyrotaxanes as emerging biomaterials for tissue engineering applications: a brief review. Inflamm Regen 2020; 40:27. [PMID: 33292785 PMCID: PMC7657355 DOI: 10.1186/s41232-020-00136-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 08/07/2020] [Indexed: 02/06/2023] Open
Abstract
The field of tissue engineering and regeneration constantly explores the possibility of utilizing various biomaterials' properties to achieve effective and uneventful tissue repairs. Polyrotaxanes (PRXs) are supramolecular assemblies, which possess interesting mechanical property at a molecular scale termed as molecular mobility. This molecular mobility could be utilized to stimulate various cellular mechanosignaling elements, thereby altering the cellular functions. Apart from this, the versatile nature of PRXs such as the ability to form complex with growth factors and peptides, numerous sites for chemical modifications, and processability into different forms makes them interesting candidates for applications towards tissue engineering. This literature briefly reviews the concepts of PRXs and molecular mobility, the versatile nature of PRXs, and its emerging utility towards certain tissue engineering applications.
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Affiliation(s)
- Arun Kumar Rajendan
- Section of Molecular Craniofacial Embryology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Yoshinori Arisaka
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo, 101-0062, Japan
| | - Nobuhiko Yui
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo, 101-0062, Japan
| | - Sachiko Iseki
- Section of Molecular Craniofacial Embryology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
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Ragelle H, Dernick K, Khemais S, Keppler C, Cousin L, Farouz Y, Louche C, Fauser S, Kustermann S, Tibbitt MW, Westenskow PD. Human Retinal Microvasculature-on-a-Chip for Drug Discovery. Adv Healthc Mater 2020; 9:e2001531. [PMID: 32975047 DOI: 10.1002/adhm.202001531] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Indexed: 12/21/2022]
Abstract
Retinal cells within neurovascular units generate the blood-retinal barrier (BRB) to regulate the local retinal microenvironment and to limit access to inflammatory cells. Breakdown of the endothelial junctional complexes in the BRB negatively affects neuronal signaling and ultimately causes vision loss. As new therapeutics are being developed either to prevent barrier disruption or to restore barrier function, access to physiologically relevant human in vitro tissue models that recapitulate important features of barrier biology is essential for disease modeling, target validation, and toxicity assessment. Here, a tunable organ-on-a-chip model of the retinal microvasculature using human retinal microvascular endothelial cells with integrated flow is described. Automated imaging and image analysis methods are employed for facile screening of leakage mediators and cytokine inhibitors on barrier properties. The developed retinal microvasculature-on-a-chip will enable improved understanding of BRB biology and provide an additional tool for drug discovery.
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Affiliation(s)
- Héloïse Ragelle
- Roche Pharma Research and Early Development Roche Innovation Center Basel F. Hoffmann‐La Roche Ltd. Basel 4070 Switzerland
| | - Karen Dernick
- Roche Pharma Research and Early Development Roche Innovation Center Basel F. Hoffmann‐La Roche Ltd. Basel 4070 Switzerland
| | - Sonia Khemais
- Roche Pharma Research and Early Development Roche Innovation Center Basel F. Hoffmann‐La Roche Ltd. Basel 4070 Switzerland
| | - Cordula Keppler
- Roche Pharma Research and Early Development Roche Innovation Center Basel F. Hoffmann‐La Roche Ltd. Basel 4070 Switzerland
| | - Lucien Cousin
- Macromolecular Engineering Laboratory Department of Mechanical and Process Engineering ETH Zurich Zurich 8092 Switzerland
| | - Yohan Farouz
- Roche Pharma Research and Early Development Roche Innovation Center Basel F. Hoffmann‐La Roche Ltd. Basel 4070 Switzerland
| | - Chris Louche
- Roche Pharma Research and Early Development Roche Innovation Center Basel F. Hoffmann‐La Roche Ltd. Basel 4070 Switzerland
| | - Sascha Fauser
- Roche Pharma Research and Early Development Roche Innovation Center Basel F. Hoffmann‐La Roche Ltd. Basel 4070 Switzerland
| | - Stefan Kustermann
- Roche Pharma Research and Early Development Roche Innovation Center Basel F. Hoffmann‐La Roche Ltd. Basel 4070 Switzerland
| | - Mark W. Tibbitt
- Macromolecular Engineering Laboratory Department of Mechanical and Process Engineering ETH Zurich Zurich 8092 Switzerland
| | - Peter D. Westenskow
- Roche Pharma Research and Early Development Roche Innovation Center Basel F. Hoffmann‐La Roche Ltd. Basel 4070 Switzerland
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Cartilage oligomeric matrix protein fine-tunes disturbed flow-induced endothelial activation and atherogenesis. Matrix Biol 2020; 95:32-51. [PMID: 33068727 DOI: 10.1016/j.matbio.2020.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/15/2020] [Accepted: 10/11/2020] [Indexed: 12/27/2022]
Abstract
Disturbed flow leads to increased inflammatory responses of endothelial cells (ECs) prone to atherogenic state. Currently, little is known about the physiological mechanisms protecting vasculature against disturbed flow-activated ECs leading to atherosclerosis. Understanding the protective mediators involved in EC activation could provide novel therapeutic strategies for atherosclerosis. The extracellular matrix microenvironment profoundly regulates cellular homeostasis. A non-EC resident ECM protein, cartilage oligomeric matrix protein (COMP), has diverse protective roles in the cardiovascular system. To determine whether COMP could protect against disturbed flow-activated EC and atherosclerosis, we compared oscillatory shear stress (OSS) induced EC activation coated with various ECM proteins. Purified COMP inhibited EC activation caused by OSS. EC activation was upregulated in the aortic arch where the flow is disturbed in COMP-/- mice as compared with wild-type mice under physiological conditions or pathologically in partially ligated mouse carotid arteries. Mechanistically, co-immunoprecipitation, mammalian two-hybrid and FRET assay results suggest that COMP bound directly to integrin α5 via its C-terminus. We next synthesized a COMP-derived peptidomimetics (CCPep24) mimicking a specific COMP-integrin α5 interaction and found that CCPep24 protected against EC activation and atherogenesis in vivo. This study extends our current understanding of how ECM and flow coordinately fine-tune EC homeostasis and reveals the potential therapeutic effect of COMP or COMP-derived peptidomimetics on blocking aberrant integrin α5 activation, inflammatory EC activation and atherosclerosis pathogenesis.
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