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Wachendörfer M, Palkowitz AL, Fischer H. Development of a biofabricated 3D in vitrovessel model for investigating transendothelial migration in stem cell therapy. Biofabrication 2024; 16:035028. [PMID: 38810632 DOI: 10.1088/1758-5090/ad51a5] [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: 01/09/2024] [Accepted: 05/29/2024] [Indexed: 05/31/2024]
Abstract
Systemic stem cell therapies hold promise for treating severe diseases, but their efficiency is hampered by limited migration of injected stem cells across vascular endothelium towards diseased tissues. Understanding transendothelial migration is crucial for improving therapy outcomes. We propose a novel 3Din vitrovessel model that aids to unravel these mechanisms and thereby facilitates stem cell therapy development. Our model simulates inflammation through cytokine diffusion from the tissue site into the vessel. It consists of a biofabricated vessel embedded in a fibrin hydrogel, mimicking arterial wall composition with smooth muscle cells and fibroblasts. The perfusable channel is lined with a functional endothelium which expresses vascular endothelial cadherin, provides an active barrier function, aligns with flow direction and is reconstructed byin situtwo-photon-microscopy. Inflammatory cytokine release (tumor necrosis factorα, stromal-derived factor (1) is demonstrated in both a transwell assay and the 3D model. In proof-of-principle experiments, mesoangioblasts, known as a promising candidate for a stem cell therapy against muscular dystrophies, are injected into the vessel model, showing shear-resistant endothelial adhesion under capillary-like flow conditions. Our 3Din vitromodel offers significant potential to study transendothelial migration mechanisms of stem cells, facilitating the development of improved stem cell therapies.
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Affiliation(s)
- Mattis Wachendörfer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Alena Lisa Palkowitz
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany
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2
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Janssen R, Benito-Zarza L, Cleijpool P, Valverde MG, Mihăilă SM, Bastiaan-Net S, Garssen J, Willemsen LEM, Masereeuw R. Biofabrication Directions in Recapitulating the Immune System-on-a-Chip. Adv Healthc Mater 2024:e2304569. [PMID: 38625078 DOI: 10.1002/adhm.202304569] [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: 12/21/2023] [Revised: 03/19/2024] [Indexed: 04/17/2024]
Abstract
Ever since the implementation of microfluidics in the biomedical field, in vitro models have experienced unprecedented progress that has led to a new generation of highly complex miniaturized cell culture platforms, known as Organs-on-a-Chip (OoC). These devices aim to emulate biologically relevant environments, encompassing perfusion and other mechanical and/or biochemical stimuli, to recapitulate key physiological events. While OoCs excel in simulating diverse organ functions, the integration of the immune organs and immune cells, though recent and challenging, is pivotal for a more comprehensive representation of human physiology. This comprehensive review covers the state of the art in the intricate landscape of immune OoC models, shedding light on the pivotal role of biofabrication technologies in bridging the gap between conceptual design and physiological relevance. The multifaceted aspects of immune cell behavior, crosstalk, and immune responses that are aimed to be replicated within microfluidic environments, emphasizing the need for precise biomimicry are explored. Furthermore, the latest breakthroughs and challenges of biofabrication technologies in immune OoC platforms are described, guiding researchers toward a deeper understanding of immune physiology and the development of more accurate and human predictive models for a.o., immune-related disorders, immune development, immune programming, and immune regulation.
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Affiliation(s)
- Robine Janssen
- Department of Pharmaceutical Sciences, Pharmacology, Utrecht University, Utrecht, 3584 CG, The Netherlands
| | - Laura Benito-Zarza
- Department of Pharmaceutical Sciences, Pharmacology, Utrecht University, Utrecht, 3584 CG, The Netherlands
| | - Pim Cleijpool
- Department of Pharmaceutical Sciences, Pharmacology, Utrecht University, Utrecht, 3584 CG, The Netherlands
| | - Marta G Valverde
- Department of Pharmaceutical Sciences, Pharmacology, Utrecht University, Utrecht, 3584 CG, The Netherlands
| | - Silvia M Mihăilă
- Department of Pharmaceutical Sciences, Pharmacology, Utrecht University, Utrecht, 3584 CG, The Netherlands
| | - Shanna Bastiaan-Net
- Wageningen Food & Biobased Research, Wageningen University & Research, Wageningen, 6708 WG, The Netherlands
| | - Johan Garssen
- Department of Pharmaceutical Sciences, Pharmacology, Utrecht University, Utrecht, 3584 CG, The Netherlands
- Danone Global Research & Innovation Center, Danone Nutricia Research B.V., Utrecht, 3584 CT, The Netherlands
| | - Linette E M Willemsen
- Department of Pharmaceutical Sciences, Pharmacology, Utrecht University, Utrecht, 3584 CG, The Netherlands
| | - Rosalinde Masereeuw
- Department of Pharmaceutical Sciences, Pharmacology, Utrecht University, Utrecht, 3584 CG, The Netherlands
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3
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Doherty EL, Krohn G, Warren EC, Patton A, Whitworth CP, Rathod M, Biehl A, Aw WY, Freytes DO, Polacheck WJ. Human Cell-Derived Matrix Composite Hydrogels with Diverse Composition for Use in Vasculature-on-chip Models. Adv Healthc Mater 2024:e2400192. [PMID: 38518808 DOI: 10.1002/adhm.202400192] [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: 02/16/2024] [Revised: 03/19/2024] [Indexed: 03/24/2024]
Abstract
Microphysiological and organ-on-chip platforms seek to address critical gaps in human disease models and drug development that underlie poor rates of clinical success for novel interventions. While the fabrication technology and model cells used to synthesize organs-on-chip have advanced considerably, most platforms rely on animal-derived or synthetic extracellular matrix as a cell substrate, limiting mimicry of human physiology and precluding use in modeling diseases in which matrix dynamics play a role in pathogenesis. Here, the development of human cell-derived matrix (hCDM) composite hydrogels for use in 3D microphysiologic models of the vasculature is reported. hCDM composite hydrogels are derived from human donor fibroblasts and maintain a complex milieu of basement membrane, proteoglycans, and nonfibrillar matrix components. The use of hCDM composite hydrogels as 2D and 3D cell culture substrates is demonstrated, and hCDM composite hydrogels are patterned to form engineered human microvessels. Interestingly, hCDM composite hydrogels are enriched in proteins associated with vascular morphogenesis as determined by mass spectrometry, and functional analysis demonstrates proangiogenic signatures in human endothelial cells cultured in these hydrogels. In conclusion, this study suggests that human donor-derived hCDM composite hydrogels could address technical gaps in human organs-on-chip development and serve as substrates to promote vascularization.
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Affiliation(s)
- Elizabeth L Doherty
- The Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, 10010 Mary Ellen Jones Building, 116 Manning Drive, Chapel Hill, NC 27514, USA
| | - Grace Krohn
- The Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, 10010 Mary Ellen Jones Building, 116 Manning Drive, Chapel Hill, NC 27514, USA
| | - Emily C Warren
- The Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, 10010 Mary Ellen Jones Building, 116 Manning Drive, Chapel Hill, NC 27514, USA
| | - Alexandra Patton
- The Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, 10010 Mary Ellen Jones Building, 116 Manning Drive, Chapel Hill, NC 27514, USA
| | - Chloe P Whitworth
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill School of Medicine, 130 Mason Farm Road, Chapel Hill, Carolina, NC 27599, USA
| | - Mitesh Rathod
- The Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, 10010 Mary Ellen Jones Building, 116 Manning Drive, Chapel Hill, NC 27514, USA
| | - Andreea Biehl
- The Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, 10010 Mary Ellen Jones Building, 116 Manning Drive, Chapel Hill, NC 27514, USA
| | - Wen Yih Aw
- The Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, 10010 Mary Ellen Jones Building, 116 Manning Drive, Chapel Hill, NC 27514, USA
| | - Donald O Freytes
- The Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, 10010 Mary Ellen Jones Building, 116 Manning Drive, Chapel Hill, NC 27514, USA
| | - William J Polacheck
- The Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, 10010 Mary Ellen Jones Building, 116 Manning Drive, Chapel Hill, NC 27514, USA
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill School of Medicine, 111 Mason Farm Road, Chapel Hill, Carolina, NC 27599, USA
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Whitworth CP, Polacheck WJ. Vascular organs-on-chip made with patient-derived endothelial cells: technologies to transform drug discovery and disease modeling. Expert Opin Drug Discov 2024; 19:339-351. [PMID: 38117223 PMCID: PMC10922379 DOI: 10.1080/17460441.2023.2294947] [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: 06/30/2023] [Accepted: 12/11/2023] [Indexed: 12/21/2023]
Abstract
INTRODUCTION Vascular diseases impart a tremendous burden on healthcare systems in the United States and across the world. Efforts to improve therapeutic interventions are hindered by limitations of current experimental models. The integration of patient-derived cells with organ-on-chip (OoC) technology is a promising avenue for preclinical drug screening that improves upon traditional cell culture and animal models. AREAS COVERED The authors review induced pluripotent stem cells (iPSC) and blood outgrowth endothelial cells (BOEC) as two sources for patient-derived endothelial cells (EC). They summarize several studies that leverage patient-derived EC and OoC for precision disease modeling of the vasculature, with a focus on applications for drug discovery. They also highlight the utility of patient-derived EC in other translational endeavors, including ex vivo organogenesis and multi-organ-chip integration. EXPERT OPINION Precision disease modeling continues to mature in the academic space, but end-use by pharmaceutical companies is currently limited. To fully realize their transformative potential, OoC systems must balance their complexity with their ability to integrate with the highly standardized and high-throughput experimentation required for drug discovery and development.
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Affiliation(s)
- Chloe P Whitworth
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - William J Polacheck
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, NC, USA
- McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Joint Department of Biomedical Engineering, North Carolina State University, Raleigh, NC, USA
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Kraus S, Lee E. A human initial lymphatic chip reveals distinct mechanisms of primary lymphatic valve dysfunction in acute and chronic inflammation. LAB ON A CHIP 2023; 23:5180-5194. [PMID: 37981867 PMCID: PMC10908576 DOI: 10.1039/d3lc00486d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
Interstitial fluid uptake and retention by lymphatic vessels (LVs) play a role in maintaining interstitial fluid homeostasis. While it is well-established that intraluminal lymphatic valves in the collecting LVs prevent fluid backflow (secondary lymphatic valves), a separate valve system in the initial LVs that only permits interstitial fluid influx into the LVs, preventing fluid leakage back to the interstitium (primary lymphatic valves), remains incompletely understood. Although lymphatic dysfunction is commonly observed in inflammation and autoimmune diseases, how the primary lymphatic valves are affected by acute and chronic inflammation has scarcely been explored and even less so using in vitro lymphatic models. Here, we developed a human initial lymphatic vessel chip where interstitial fluid pressure and luminal fluid pressure are controlled to examine primary lymph valve function. In normal conditions, lymphatic drainage (fluid uptake) and permeability (fluid leakage) in engineered LVs were maintained high and low, respectively, which was consistent with our understanding of healthy primary lymph valves. Next, we examined the effects of acute and chronic inflammation. Under the acute inflammation condition with a TNF-α treatment (2 hours), degradation of fibrillin and impeded lymphatic drainage were observed, which were reversed by treatment with anti-inflammatory dexamethasone. Surprisingly, the chronic inflammation condition (repeated TNF-α treatments during 48 hours) deposited fibrillin to compensate for the fibrillin loss, showing no change in lymphatic drainage. Instead, the chronic inflammation condition led to cell death and disruption of lymphatic endothelial cell-cell junctions, increasing lymphatic permeability and fluid leakage. Our human lymphatic model shows two distinct mechanisms by which primary lymphatic valve dysfunction occurs in acute and chronic inflammation.
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Affiliation(s)
- Samantha Kraus
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA.
| | - Esak Lee
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA.
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Juste-Lanas Y, Hervas-Raluy S, García-Aznar JM, González-Loyola A. Fluid flow to mimic organ function in 3D in vitro models. APL Bioeng 2023; 7:031501. [PMID: 37547671 PMCID: PMC10404142 DOI: 10.1063/5.0146000] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 06/20/2023] [Indexed: 08/08/2023] Open
Abstract
Many different strategies can be found in the literature to model organ physiology, tissue functionality, and disease in vitro; however, most of these models lack the physiological fluid dynamics present in vivo. Here, we highlight the importance of fluid flow for tissue homeostasis, specifically in vessels, other lumen structures, and interstitium, to point out the need of perfusion in current 3D in vitro models. Importantly, the advantages and limitations of the different current experimental fluid-flow setups are discussed. Finally, we shed light on current challenges and future focus of fluid flow models applied to the newest bioengineering state-of-the-art platforms, such as organoids and organ-on-a-chip, as the most sophisticated and physiological preclinical platforms.
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Affiliation(s)
| | - Silvia Hervas-Raluy
- Department of Mechanical Engineering, Engineering Research Institute of Aragón (I3A), University of Zaragoza, Zaragoza, Spain
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Bogseth A, Ramirez A, Vaughan E, Maisel K. In Vitro Models of Blood and Lymphatic Vessels-Connecting Tissues and Immunity. Adv Biol (Weinh) 2023; 7:e2200041. [PMID: 35751460 PMCID: PMC9790046 DOI: 10.1002/adbi.202200041] [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: 02/18/2022] [Revised: 05/10/2022] [Indexed: 12/27/2022]
Abstract
Blood and lymphatic vessels are regulators of physiological processes, including oxygenation and fluid transport. Both vessels are ubiquitous throughout the body and are critical for sustaining tissue homeostasis. The complexity of each vessel's processes has limited the understanding of exactly how the vessels maintain their functions. Both vessels have been shown to be involved in the pathogenesis of many diseases, including cancer metastasis, and it is crucial to probe further specific mechanisms involved. In vitro models are developed to better understand blood and lymphatic physiological functions and their mechanisms. In this review, blood and lymphatic in vitro model systems, including 2D and 3D designs made using Transwells, microfluidic devices, organoid cultures, and various other methods, are described. Models studying endothelial cell-extracellular matrix interactions, endothelial barrier properties, transendothelial transport and cell migration, lymph/angiogenesis, vascular inflammation, and endothelial-cancer cell interactions are particularly focused. While the field has made significant progress in modeling and understanding lymphatic and blood vasculature, more models that include coculture of multiple cell types, complex extracellular matrix, and 3D morphologies, particularly for models mimicking disease states, will help further the understanding of the role of blood and lymphatic vasculature in health and disease.
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Affiliation(s)
- Amanda Bogseth
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742
| | - Ann Ramirez
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742
| | - Erik Vaughan
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742
| | - Katharina Maisel
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742
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Watson SA, Javanmardi Y, Zanieri L, Shahreza S, Ragazzini R, Bonfanti P, Moeendarbary E. Integrated role of human thymic stromal cells in hematopoietic stem cell extravasation. Bioeng Transl Med 2023; 8:e10454. [PMID: 36925684 PMCID: PMC10013751 DOI: 10.1002/btm2.10454] [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: 06/10/2022] [Revised: 11/03/2022] [Accepted: 11/09/2022] [Indexed: 11/19/2022] Open
Abstract
The human thymus is the site of T-cell maturation and induction of central tolerance. Hematopoietic stem cell (HSC)-derived progenitors are recruited to the thymus from the fetal liver during early prenatal development and from bone marrow at later stages and postnatal life. The mechanism by which HSCs are recruited to the thymus is poorly understood in humans, though mouse models have indicated the critical role of thymic stromal cells (TSC). Here, we developed a 3D microfluidic assay based on human cells to model HSC extravasation across the endothelium into the extracellular matrix. We found that the presence of human TSC consisting of cultured thymic epithelial cells (TEC) and interstitial cells (TIC) increases the HSC extravasation rates by 3-fold. Strikingly, incorporating TEC or TIC alone is insufficient to perturb HSC extravasation rates. Furthermore, we identified complex gene expressions from interactions between endothelial cells, TEC and TIC modulates the HSCs extravasation. Our results suggest that comprehensive signaling from the complex thymic microenvironment is crucial for thymus seeding and that our system will allow manipulation of these signals with the potential to increase thymocyte migration in a therapeutic setting.
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Affiliation(s)
- Sara A. Watson
- Department of Mechanical EngineeringUCLLondonUK
- Epithelial Stem Cell Biology and Regenerative Medicine LabThe Francis Crick InstituteLondonUK
| | | | - Luca Zanieri
- Epithelial Stem Cell Biology and Regenerative Medicine LabThe Francis Crick InstituteLondonUK
- Institute of Immunity and TransplantationDivision of Infection & Immunity, UCLLondonUK
| | | | - Roberta Ragazzini
- Epithelial Stem Cell Biology and Regenerative Medicine LabThe Francis Crick InstituteLondonUK
- Institute of Immunity and TransplantationDivision of Infection & Immunity, UCLLondonUK
| | - Paola Bonfanti
- Epithelial Stem Cell Biology and Regenerative Medicine LabThe Francis Crick InstituteLondonUK
- Institute of Immunity and TransplantationDivision of Infection & Immunity, UCLLondonUK
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Salipante PF. Microfluidic techniques for mechanical measurements of biological samples. BIOPHYSICS REVIEWS 2023; 4:011303. [PMID: 38505816 PMCID: PMC10903441 DOI: 10.1063/5.0130762] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/30/2022] [Indexed: 03/21/2024]
Abstract
The use of microfluidics to make mechanical property measurements is increasingly common. Fabrication of microfluidic devices has enabled various types of flow control and sensor integration at micrometer length scales to interrogate biological materials. For rheological measurements of biofluids, the small length scales are well suited to reach high rates, and measurements can be made on droplet-sized samples. The control of flow fields, constrictions, and external fields can be used in microfluidics to make mechanical measurements of individual bioparticle properties, often at high sampling rates for high-throughput measurements. Microfluidics also enables the measurement of bio-surfaces, such as the elasticity and permeability properties of layers of cells cultured in microfluidic devices. Recent progress on these topics is reviewed, and future directions are discussed.
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Affiliation(s)
- Paul F. Salipante
- National Institute of Standards and Technology, Polymers and Complex Fluids Group, Gaithersburg, Maryland 20899, USA
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Alamán‐Díez P, García‐Gareta E, Arruebo M, Pérez MÁ. A bone-on-a-chip collagen hydrogel-based model using pre-differentiated adipose-derived stem cells for personalized bone tissue engineering. J Biomed Mater Res A 2023; 111:88-105. [PMID: 36205241 PMCID: PMC9828068 DOI: 10.1002/jbm.a.37448] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/24/2022] [Accepted: 09/13/2022] [Indexed: 01/12/2023]
Abstract
Mesenchymal stem cells have contributed to the continuous progress of tissue engineering and regenerative medicine. Adipose-derived stem cells (ADSC) possess many advantages compared to other origins including easy tissue harvesting, self-renewal potential, and fast population doubling time. As multipotent cells, they can differentiate into osteoblastic cell linages. In vitro bone models are needed to carry out an initial safety assessment in the study of novel bone regeneration therapies. We hypothesized that 3D bone-on-a-chip models containing ADSC could closely recreate the physiological bone microenvironment and promote differentiation. They represent an intermedium step between traditional 2D-in vitro and in vivo experiments facilitating the screening of therapeutic molecules while saving resources. Herein, we have differentiated ADSC for 7 and 14 days and used them to fabricate in vitro bone models by embedding the pre-differentiated cells in a 3D collagen matrix placed in a microfluidic chip. Osteogenic markers such as alkaline phosphatase activity, calcium mineralization, changes on cell morphology, and expression of specific proteins (bone sialoprotein 2, dentin matrix acidic phosphoprotein-1, and osteocalcin) were evaluated to determine cell differentiation potential and evolution. This is the first miniaturized 3D-in vitro bone model created from pre-differentiated ADSC embedded in a hydrogel collagen matrix which could be used for personalized bone tissue engineering.
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Affiliation(s)
- Pilar Alamán‐Díez
- Multiscale in Mechanical and Biological Engineering, Aragón Institute of Engineering Research (I3A), Aragón Institute of Healthcare Research (IIS Aragón)University of ZaragozaZaragozaSpain
| | - Elena García‐Gareta
- Multiscale in Mechanical and Biological Engineering, Aragón Institute of Engineering Research (I3A), Aragón Institute of Healthcare Research (IIS Aragón)University of ZaragozaZaragozaSpain,Division of Biomaterials and Tissue Engineering, UCL Eastman Dental InstituteUniversity College LondonLondonUK
| | - Manuel Arruebo
- Aragón Institute of Nanoscience and Materials (INMA), Consejo Superior de Investigaciones Científicas (CSIC)University of ZaragozaZaragozaSpain,Department of Chemical EngineeringUniversity of ZaragozaZaragozaSpain
| | - María Ángeles Pérez
- Multiscale in Mechanical and Biological Engineering, Aragón Institute of Engineering Research (I3A), Aragón Institute of Healthcare Research (IIS Aragón)University of ZaragozaZaragozaSpain
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Pérez-Rodríguez S, Borau C, García-Aznar JM, Gonzalo-Asensio J. A microfluidic-based analysis of 3D macrophage migration after stimulation by Mycobacterium, Salmonella and Escherichia. BMC Microbiol 2022; 22:211. [PMID: 36045335 PMCID: PMC9429415 DOI: 10.1186/s12866-022-02623-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 08/22/2022] [Indexed: 11/23/2022] Open
Abstract
Macrophages play an essential role in the process of recognition and containment of microbial infections. These immune cells are recruited to infectious sites to reach and phagocytose pathogens. Specifically, in this article, bacteria from the genus Mycobacterium, Salmonella and Escherichia, were selected to study the directional macrophage movement towards different bacterial fractions. We recreated a three-dimensional environment in a microfluidic device, using a collagen-based hydrogel that simulates the mechanical microarchitecture associated to the Extra Cellular Matrix (ECM). First, we showed that macrophage migration is affected by the collagen concentration of their environment, migrating greater distances at higher velocities with decreasing collagen concentrations. To recreate the infectious microenvironment, macrophages were exposed to lateral gradients of bacterial fractions obtained from the intracellular pathogens M. tuberculosis and S. typhimurium. Our results showed that macrophages migrated directionally, and in a concentration-dependent manner, towards the sites where bacterial fractions are located, suggesting the presence of attractants molecules in all the samples. We confirmed that purified M. tuberculosis antigens, as ESAT-6 and CFP-10, stimulated macrophage recruitment in our device. Finally, we also observed that macrophages migrate towards fractions from non-pathogenic bacteria, such as M. smegmatis and Escherichia coli. In conclusion, our microfluidic device is a useful tool which opens new perspectives to study the recognition of specific antigens by innate immune cells.
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