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Leonard-Duke J, Agro SMJ, Csordas DJ, Bruce AC, Eggertsen TG, Tavakol TN, Barker TH, Bonham CA, Saucerman JJ, Taite LJ, Peirce SM. Multiscale computational model predicts how environmental changes and drug treatments affect microvascular remodeling in fibrotic disease. bioRxiv 2024:2024.03.15.585249. [PMID: 38559112 PMCID: PMC10979947 DOI: 10.1101/2024.03.15.585249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Investigating the molecular, cellular, and tissue-level changes caused by disease, and the effects of pharmacological treatments across these biological scales, necessitates the use of multiscale computational modeling in combination with experimentation. Many diseases dynamically alter the tissue microenvironment in ways that trigger microvascular network remodeling, which leads to the expansion or regression of microvessel networks. When microvessels undergo remodeling in idiopathic pulmonary fibrosis (IPF), functional gas exchange is impaired due to loss of alveolar structures and lung function declines. Here, we integrated a multiscale computational model with independent experiments to investigate how combinations of biomechanical and biochemical cues in IPF alter cell fate decisions leading to microvascular remodeling. Our computational model predicted that extracellular matrix (ECM) stiffening reduced microvessel area, which was accompanied by physical uncoupling of endothelial cell (ECs) and pericytes, the cells that comprise microvessels. Nintedanib, an FDA-approved drug for treating IPF, was predicted to further potentiate microvessel regression by decreasing the percentage of quiescent pericytes while increasing the percentage of pericytes undergoing pericyte-myofibroblast transition (PMT) in high ECM stiffnesses. Importantly, the model suggested that YAP/TAZ inhibition may overcome the deleterious effects of nintedanib by promoting EC-pericyte coupling and maintaining microvessel homeostasis. Overall, our combination of computational and experimental modeling can explain how cell decisions affect tissue changes during disease and in response to treatments.
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Affiliation(s)
- Julie Leonard-Duke
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
| | - Samuel M. J. Agro
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia, USA
| | - David J. Csordas
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
| | - Anthony C. Bruce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
| | - Taylor G. Eggertsen
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
| | - Tara N. Tavakol
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
| | - Thomas H. Barker
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
| | - Catherine A. Bonham
- Department of Pulmonary and Critical Care Medicine, University of Virginia, Charlottesville, Virginia, USA
| | - Jeffery J. Saucerman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
| | - Lakeshia J. Taite
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia, USA
| | - Shayn M. Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
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Haase M, Comlekoglu T, Petrucciani A, Peirce SM, Blemker SS. Agent-based model demonstrates the impact of nonlinear, complex interactions between cytokines on muscle regeneration. bioRxiv 2024:2023.08.14.553247. [PMID: 37645968 PMCID: PMC10462020 DOI: 10.1101/2023.08.14.553247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Muscle regeneration is a complex process due to dynamic and multiscale biochemical and cellular interactions, making it difficult to identify microenvironmental conditions that are beneficial to muscle recovery from injury using experimental approaches alone. To understand the degree to which individual cellular behaviors impact endogenous mechanisms of muscle recovery, we developed an agent-based model (ABM) using the Cellular Potts framework to simulate the dynamic microenvironment of a cross-section of murine skeletal muscle tissue. We referenced more than 100 published studies to define over 100 parameters and rules that dictate the behavior of muscle fibers, satellite stem cells (SSC), fibroblasts, neutrophils, macrophages, microvessels, and lymphatic vessels, as well as their interactions with each other and the microenvironment. We utilized parameter density estimation to calibrate the model to temporal biological datasets describing cross-sectional area (CSA) recovery, SSC, and fibroblast cell counts at multiple time points following injury. The calibrated model was validated by comparison of other model outputs (macrophage, neutrophil, and capillaries counts) to experimental observations. Predictions for eight model perturbations that varied cell or cytokine input conditions were compared to published experimental studies to validate model predictive capabilities. We used Latin hypercube sampling and partial rank correlation coefficient to identify in silico perturbations of cytokine diffusion coefficients and decay rates to enhance CSA recovery. This analysis suggests that combined alterations of specific cytokine decay and diffusion parameters result in greater fibroblast and SSC proliferation compared to individual perturbations with a 13% increase in CSA recovery compared to unaltered regeneration at 28 days. These results enable guided development of therapeutic strategies that similarly alter muscle physiology (i.e. converting ECM-bound cytokines into freely diffusible forms as studied in cancer therapeutics or delivery of exogenous cytokines) during regeneration to enhance muscle recovery after injury.
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Sego TJ, Comlekoglu T, Peirce SM, Desimone DW, Glazier JA. General, open-source vertex modeling in biological applications using Tissue Forge. Sci Rep 2023; 13:17886. [PMID: 37857673 PMCID: PMC10587242 DOI: 10.1038/s41598-023-45127-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 10/16/2023] [Indexed: 10/21/2023] Open
Abstract
Vertex models are a widespread approach for describing the biophysics and behaviors of multicellular systems, especially of epithelial tissues. Vertex models describe a wide variety of developmental scenarios and behaviors like cell rearrangement and tissue folding. Often, these models are implemented as single-use or closed-source software, which inhibits reproducibility and decreases accessibility for researchers with limited proficiency in software development and numerical methods. We developed a physics-based vertex model methodology in Tissue Forge, an open-source, particle-based modeling and simulation environment. Our methodology describes the properties and processes of vertex model objects on the basis of vertices, which allows integration of vertex modeling with the particle-based formalism of Tissue Forge, enabling an environment for developing mixed-method models of multicellular systems. Our methodology in Tissue Forge inherits all features provided by Tissue Forge, delivering open-source, extensible vertex modeling with interactive simulation, real-time simulation visualization and model sharing in the C, C++ and Python programming languages and a Jupyter Notebook. Demonstrations show a vertex model of cell sorting and a mixed-method model of cell migration combining vertex- and particle-based models. Our methodology provides accessible vertex modeling for a broad range of scientific disciplines, and we welcome community-developed contributions to our open-source software implementation.
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Affiliation(s)
- T J Sego
- Department of Medicine, University of Florida, Gainesville, FL, USA.
| | - Tien Comlekoglu
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
- Department of Cell Biology, University of Virginia, Charlottesville, VA, USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Douglas W Desimone
- Department of Cell Biology, University of Virginia, Charlottesville, VA, USA
| | - James A Glazier
- Department of Intelligent Engineering and Biocomplexity Institute, Indiana University, Bloomington, IN, USA
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4
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Comlekoglu T, Dzamba BJ, Pacheco GG, Shook DR, Sego TJ, Glazier JA, Peirce SM, DeSimone DW. Modeling the roles of cohesotaxis, cell-intercalation, and tissue geometry in collective cell migration of Xenopus mesendoderm. bioRxiv 2023:2023.10.16.562601. [PMID: 37904937 PMCID: PMC10614848 DOI: 10.1101/2023.10.16.562601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
Collectively migrating Xenopus mesendoderm cells are arranged into leader and follower rows with distinct adhesive properties and protrusive behaviors. In vivo, leading row mesendoderm cells extend polarized protrusions and migrate along a fibronectin matrix assembled by blastocoel roof cells. Traction stresses generated at the leading row result in the pulling forward of attached follower row cells. Mesendoderm explants removed from embryos provide an experimentally tractable system for characterizing collective cell movements and behaviors, yet the cellular mechanisms responsible for this mode of migration remain elusive. We introduce an agent-based computational model of migrating mesendoderm in the Cellular-Potts computational framework to investigate the relative contributions of multiple parameters specific to the behaviors of leader and follower row cells. Sensitivity analyses identify cohesotaxis, tissue geometry, and cell intercalation as key parameters affecting the migration velocity of collectively migrating cells. The model predicts that cohesotaxis and tissue geometry in combination promote cooperative migration of leader cells resulting in increased migration velocity of the collective. Radial intercalation of cells towards the substrate is an additional mechanism to increase migratory speed of the tissue. Summary Statement We present a novel Cellular-Potts model of collective cell migration to investigate the relative roles of cohesotaxis, tissue geometry, and cell intercalation on migration velocity of Xenopus mesendoderm.
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Leonard-Duke J, Bruce AC, Peirce SM, Taite LJ. Variations in mechanical stiffness alter microvascular sprouting and stability in a PEG hydrogel model of idiopathic pulmonary fibrosis. Microcirculation 2023; 30:e12817. [PMID: 37248193 PMCID: PMC10524245 DOI: 10.1111/micc.12817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 04/07/2023] [Accepted: 05/16/2023] [Indexed: 05/31/2023]
Abstract
OBJECTIVE Microvascular remodeling is governed by biomechanical and biochemical cues which are dysregulated in idiopathic pulmonary fibrosis. Understanding how these cues impact endothelial cell-pericyte interactions necessitates a model system in which both variables can be independently and reproducibly modulated. In this study we develop a tunable hydrogel-based angiogenesis assay to study how varying angiogenic growth factors and environmental stiffness affect sprouting and vessel organization. METHODS Lungs harvested from mice were cut into 1 mm long segments then cultured on hydrogels having one of seven possible stiffness and growth factor combinations. Time course, brightfield, and immunofluorescence imaging were used to observe and quantify sprout formation. RESULTS Our assay was able to support angiogenesis in a comparable manner to Matrigel in soft 2 kPa gels while enabling tunability to study the effects of stiffness on sprout formation. Matrigel and 2 kPa groups contained significantly more samples with sprouts when compared to the stiffer 10 and 20 kPa gels. Growth factor treatment did not have as obvious an effect, although the 20 kPa PDGF + FGF-treated group had significantly longer vessels than the vascular endothelial growth factor-treated group. CONCLUSIONS We have developed a novel, tunable hydrogel assay for the creation of lung explant vessel organoids which can be modulated to study the impact of specific environmental cues on vessel formation and maturation.
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Affiliation(s)
- Julie Leonard-Duke
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
| | - Anthony C Bruce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
| | - Lakeshia J Taite
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia, USA
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6
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Skalnik CJ, Cheah SY, Yang MY, Wolff MB, Spangler RK, Talman L, Morrison JH, Peirce SM, Agmon E, Covert MW. Whole-cell modeling of E. coli colonies enables quantification of single-cell heterogeneity in antibiotic responses. PLoS Comput Biol 2023; 19:e1011232. [PMID: 37327241 DOI: 10.1371/journal.pcbi.1011232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 06/01/2023] [Indexed: 06/18/2023] Open
Abstract
Antibiotic resistance poses mounting risks to human health, as current antibiotics are losing efficacy against increasingly resistant pathogenic bacteria. Of particular concern is the emergence of multidrug-resistant strains, which has been rapid among Gram-negative bacteria such as Escherichia coli. A large body of work has established that antibiotic resistance mechanisms depend on phenotypic heterogeneity, which may be mediated by stochastic expression of antibiotic resistance genes. The link between such molecular-level expression and the population levels that result is complex and multi-scale. Therefore, to better understand antibiotic resistance, what is needed are new mechanistic models that reflect single-cell phenotypic dynamics together with population-level heterogeneity, as an integrated whole. In this work, we sought to bridge single-cell and population-scale modeling by building upon our previous experience in "whole-cell" modeling, an approach which integrates mathematical and mechanistic descriptions of biological processes to recapitulate the experimentally observed behaviors of entire cells. To extend whole-cell modeling to the "whole-colony" scale, we embedded multiple instances of a whole-cell E. coli model within a model of a dynamic spatial environment, allowing us to run large, parallelized simulations on the cloud that contained all the molecular detail of the previous whole-cell model and many interactive effects of a colony growing in a shared environment. The resulting simulations were used to explore the response of E. coli to two antibiotics with different mechanisms of action, tetracycline and ampicillin, enabling us to identify sub-generationally-expressed genes, such as the beta-lactamase ampC, which contributed greatly to dramatic cellular differences in steady-state periplasmic ampicillin and was a significant factor in determining cell survival.
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Affiliation(s)
- Christopher J Skalnik
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
| | - Sean Y Cheah
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
| | - Mica Y Yang
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
| | - Mattheus B Wolff
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
| | - Ryan K Spangler
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
| | - Lee Talman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
| | - Jerry H Morrison
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
| | - Eran Agmon
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
- Center for Cell Analysis and Modeling, University of Connecticut School of Medicine, Farmington, Connecticut, United States of America
| | - Markus W Covert
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
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7
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Sego T, Comlekoglu T, Peirce SM, Desimone D, Glazier JA. General, Open-Source Vertex Modeling in Biological Applications Using Tissue Forge. Res Sq 2023:rs.3.rs-2886960. [PMID: 37214822 PMCID: PMC10197754 DOI: 10.21203/rs.3.rs-2886960/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Vertex models are a widespread approach for describing the biophysics and behaviors of multicellular systems, especially of epithelial tissues. Vertex models describe a wide variety of developmental scenarios and behaviors like cell rearrangement and tissue folding. Often, these models are implemented as single-use or closed-source software, which inhibits reproducibility and decreases accessibility for researchers with limited proficiency in software development and numerical methods. We developed a physics-based vertex model methodology in Tissue Forge, an open-source, particle-based modeling and simulation environment. Our methodology describes the properties and processes of vertex model objects on the basis of vertices, which allows integration of vertex modeling with the particle-based formalism of Tissue Forge, enabling an environment for developing mixed-method models of multicellular systems. Our methodology in Tissue Forge inherits all features provided by Tissue Forge, delivering opensource, extensible vertex modeling with interactive simulation, real-time simulation visualization and model sharing in the C , C + + and Python programming languages and a Jupyter Notebook. Demonstrations show a vertex model of cell sorting and a mixed-method model of cell migration combining vertex- and particle-based models. Our methodology provides accessible vertex modeling for a broad range of scientific disciplines, and we welcome community-developed contributions to our open-source software implementation.
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Affiliation(s)
- T.J. Sego
- Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Tien Comlekoglu
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
- Department of Cell Biology, University of Virginia, Charlottesville, VA, USA
| | - Shayn M. Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Douglas Desimone
- Department of Cell Biology, University of Virginia, Charlottesville, VA, USA
| | - James A. Glazier
- Department of Intelligent Engineering and Biocomplexity Institute, Indiana University,Bloomington, IN, USA
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8
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Sivakumar N, Warner HV, Peirce SM, Lazzara MJ. Correction: A computational modeling approach for predicting multicell spheroid patterns based on signaling-induced differential adhesion. PLoS Comput Biol 2023; 19:e1011166. [PMID: 37216327 DOI: 10.1371/journal.pcbi.1011166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pcbi.1010701.].
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Ruddiman CA, Peckham RG, Luse MA, Chen YL, Kuppusamy M, Corliss BA, Hall J, Lin CJ, Peirce SM, Sonkusare SK, Mecham RP, Wagenseil JE, Isakson BE. Polarized localization of phosphatidylserine in endothelium regulates Kir2.1. JCI Insight 2023; 8:165715. [PMID: 37014698 DOI: 10.1172/jci.insight.165715] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Lipid regulation of ion channels is largely explored using in silico modeling with minimal experimentation in intact tissue; thus, the functional consequences of these predicted lipid-channel interactions within native cellular environments remain elusive. The goal of this study is to investigate how lipid regulation of endothelial Kir2.1, an inwardly rectifying potassium channel that regulates membrane hyperpolarization, contributes to vasodilation in resistance arteries. First, we show phosphatidylserine (PS) localizes to a specific subpopulation of myoendothelial junctions (MEJs), crucial signaling microdomains that regulate vasodilation in resistance arteries, and in silico data has implied PS may compete with PIP2 binding on Kir2.1. We found 83.33% of Kir2.1-MEJs also contained PS, possibly indicating an interaction where PS regulates Kir2.1. Electrophysiology experiments on HEK cells demonstrate PS blocks PIP2 activation of Kir2.1, and addition of exogenous PS blocks PIP2-mediated Kir2.1 vasodilation in resistance arteries. Using a mouse model lacking canonical MEJs in resistance arteries (Elnfl/fl/Cdh5-Cre), PS localization in endothelium was disrupted and PIP2 activation of Kir2.1 was significantly increased. Taken together, our data suggests PS enrichment to MEJs inhibits PIP2-mediated activation of Kir2.1 to tightly regulate changes in arterial diameter, and demonstrates the intracellular lipid localization within endothelium is an important determinant of vascular function.
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Affiliation(s)
- Claire A Ruddiman
- Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, United States of America
| | - Richard G Peckham
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, United States of America
| | - Melissa A Luse
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, United States of America
| | - Yen-Lin Chen
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, United States of America
| | - Maniselvan Kuppusamy
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, United States of America
| | - Bruce A Corliss
- Department of Biomedical Engineering, University of Virginia School of Medicine, Charlottesville, United States of America
| | - Jordan Hall
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, United States of America
| | - Chien-Jung Lin
- Division of Cardiology, St. Louis University School of Medicine, St. Louis, United States of America
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia School of Medicine, Charlottesville, United States of America
| | - Swapnil K Sonkusare
- Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, United States of America
| | - Robert P Mecham
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, United States of America
| | - Jessica E Wagenseil
- Department of Mechanical Engineering and Materials Science, Washington University School of Medicine, St. Louis, United States of America
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, United States of America
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Varhue WB, Rane A, Castellanos-Sanchez R, Peirce SM, Christ G, Swami NS. Perfusable cell-laden micropatterned hydrogels for delivery of spatiotemporal vascular-like cues to tissues. Organs Chip 2022; 4:100017. [PMID: 36865345 PMCID: PMC9977322 DOI: 10.1016/j.ooc.2022.100017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The integration of vasculature at physiological scales within 3D cultures of cell-laden hydrogels for the delivery of spatiotemporal mass transport, chemical and mechanical cues, is a stepping-stone towards building in vitro tissue models that recapitulate in vivo cues. To address this challenge, we present a versatile method to micropattern adjoining hydrogel shells with a perfusable channel or lumen core, for enabling facile integration with fluidic control systems, on one hand, and to cell-laden biomaterial interfaces, on the other hand. This microfluidic imprint lithography methodology utilizes the high tolerance and reversible nature of the bond alignment process to lithographically position multiple layers of imprints within a microfluidic device for sequential filling and patterning of hydrogel lumen structures with single or multiple shells. Through fluidic interfacing of the structures, the ability to deliver physiologically relevant mechanical cues for recapitulating cyclical stretch on the hydrogel shell and shear stress on endothelial cells in the lumen are validated. We envision application of this platform for recapitulation of the bio-functionality and topology of micro-vasculatures, alongside the ability to deliver transport and mechanical cues, as needed for 3D culture to construct in vitro tissue models.
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Affiliation(s)
- Walter B. Varhue
- Electrical and Computer Engineering, University of Virginia, Charlottesville, VA, 22904, USA
| | - Aditya Rane
- Chemistry, University of Virginia, Charlottesville, VA, 22904, USA
| | | | - Shayn M. Peirce
- Biomedical Engineering, University of Virginia, Charlottesville, VA, 22904, USA
| | - George Christ
- Biomedical Engineering, University of Virginia, Charlottesville, VA, 22904, USA
| | - Nathan S. Swami
- Electrical and Computer Engineering, University of Virginia, Charlottesville, VA, 22904, USA
- Chemistry, University of Virginia, Charlottesville, VA, 22904, USA
- Corresponding author. University of Virginia, 351 McCormick Rd, Charlottesville, VA, 22904, USA. (N.S. Swami)
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11
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Sivakumar N, Warner HV, Peirce SM, Lazzara MJ. A computational modeling approach for predicting multicell spheroid patterns based on signaling-induced differential adhesion. PLoS Comput Biol 2022; 18:e1010701. [PMID: 36441822 PMCID: PMC9747056 DOI: 10.1371/journal.pcbi.1010701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/13/2022] [Accepted: 11/01/2022] [Indexed: 11/29/2022] Open
Abstract
Physiological and pathological processes including embryogenesis and tumorigenesis rely on the ability of individual cells to work collectively to form multicell patterns. In these heterogeneous multicell systems, cell-cell signaling induces differential adhesion between cells that leads to tissue-level patterning. However, the sensitivity of pattern formation to changes in the strengths of signaling or cell adhesion processes is not well understood. Prior work has explored these issues using synthetically engineered heterogeneous multicell spheroid systems, in which cell subpopulations engage in bidirectional intercellular signaling to regulate the expression of different cadherins. While engineered cell systems provide excellent experimental tools to observe pattern formation in cell populations, computational models of these systems may be leveraged to explore more systematically how specific combinations of signaling and adhesion parameters can drive the emergence of unique patterns. We developed and validated two- and three-dimensional agent-based models (ABMs) of spheroid patterning for previously described cells engineered with a bidirectional signaling circuit that regulates N- and P-cadherin expression. Systematic exploration of model predictions, some of which were experimentally validated, revealed how cell seeding parameters, the order of signaling events, probabilities of induced cadherin expression, and homotypic adhesion strengths affect pattern formation. Unsupervised clustering was also used to map combinations of signaling and adhesion parameters to these unique spheroid patterns predicted by the ABM. Finally, we demonstrated how the model may be deployed to design new synthetic cell signaling circuits based on a desired final multicell pattern.
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Affiliation(s)
- Nikita Sivakumar
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
| | - Helen V. Warner
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
| | - Shayn M. Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
| | - Matthew J. Lazzara
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
- * E-mail:
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12
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Rikard SM, Kim B, Michel JD, Peirce SM, Barnes LE, Williams MD. Identifying individual social risk factors using unstructured data in electronic health records and their relationship with adverse clinical outcomes. SSM Popul Health 2022; 19:101210. [PMID: 36111269 PMCID: PMC9467895 DOI: 10.1016/j.ssmph.2022.101210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 07/25/2022] [Accepted: 08/14/2022] [Indexed: 11/17/2022] Open
Affiliation(s)
| | - Bommae Kim
- Department of Quality and Performance Improvement, University of Virginia Health System, USA
| | - Jonathan D. Michel
- Department of Quality and Performance Improvement, University of Virginia Health System, USA
| | - Shayn M. Peirce
- Department of Biomedical Engineering, University of Virginia, USA
- School of Medicine, University of Virginia, USA
| | - Laura E. Barnes
- Department of Systems and Information Engineering, University of Virginia, USA
| | - Michael D. Williams
- School of Medicine, University of Virginia, USA
- Frank Batten School of Leadership and Public Policy, University of Virginia, USA
- Corresponding author. School of Medicine, University of Virginia, USA.
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13
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Leonard‐Duke J, Hung C, Sharma A, Peirce SM. Multi‐scale Computational Model of Endothelial Cell‐Pericyte Coupling in Idiopathic Pulmonary Fibrosis. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r6252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Julie Leonard‐Duke
- Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
- Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
| | - Claire Hung
- Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
| | - Anahita Sharma
- Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
| | - Shayn M. Peirce
- Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
- Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
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14
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Sun N, Bruce AC, Ning B, Cao R, Wang Y, Zhong F, Peirce SM, Hu S. Photoacoustic microscopy of vascular adaptation and tissue oxygen metabolism during cutaneous wound healing. Biomed Opt Express 2022; 13:2695-2706. [PMID: 35774317 PMCID: PMC9203110 DOI: 10.1364/boe.456198] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 06/15/2023]
Abstract
Cutaneous wounds affect millions of people every year. Vascularization and blood oxygen delivery are critical bottlenecks in wound healing, and understanding the spatiotemporal dynamics of these processes may lead to more effective therapeutic strategies to accelerate wound healing. In this work, we applied multi-parametric photoacoustic microscopy (PAM) to study vascular adaptation and the associated changes in blood oxygen delivery and tissue oxygen metabolism throughout the hemostasis, inflammatory, proliferation, and early remodeling phases of wound healing in mice with skin puncture wounds. Multifaceted changes in the vascular structure, function, and tissue oxygen metabolism were observed during the 14-day monitoring of wound healing. On the entire wound area, significant elevations of the arterial blood flow and tissue oxygen metabolism were observed right after wounding and remained well above the baseline over the 14-day period. On the healing front, biphasic changes in the vascular density and blood flow were observed, both of which peaked on day 1, remained elevated in the first week, and returned to the baselines by day 14. Along with the wound closure and thickening, tissue oxygen metabolism in the healing front remained elevated even after structural and functional changes in the vasculature were stabilized. On the newly formed tissue, significantly higher blood oxygenation, flow, and tissue metabolism were observed compared to those before wounding. Blood oxygenation and flow in the new tissue appeared to be independent of when it was formed, but instead showed noticeable dependence on the phase of wound healing. This PAM study provides new insights into the structural, functional, and metabolic changes associated with vascular adaptation during wound healing and suggests that the timing and target of vascular treatments for wound healing may affect the outcomes.
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Affiliation(s)
- Naidi Sun
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Anthony C. Bruce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Bo Ning
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Rui Cao
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Yiming Wang
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Fenghe Zhong
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Shayn M. Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Song Hu
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA
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15
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Agmon E, Spangler RK, Skalnik CJ, Poole W, Peirce SM, Morrison JH, Covert MW. Vivarium: an interface and engine for integrative multiscale modeling in computational biology. Bioinformatics 2022; 38:1972-1979. [PMID: 35134830 PMCID: PMC8963310 DOI: 10.1093/bioinformatics/btac049] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 12/14/2021] [Accepted: 01/28/2022] [Indexed: 02/06/2023] Open
Abstract
MOTIVATION This article introduces Vivarium-software born of the idea that it should be as easy as possible for computational biologists to define any imaginable mechanistic model, combine it with existing models and execute them together as an integrated multiscale model. Integrative multiscale modeling confronts the complexity of biology by combining heterogeneous datasets and diverse modeling strategies into unified representations. These integrated models are then run to simulate how the hypothesized mechanisms operate as a whole. But building such models has been a labor-intensive process that requires many contributors, and they are still primarily developed on a case-by-case basis with each project starting anew. New software tools that streamline the integrative modeling effort and facilitate collaboration are therefore essential for future computational biologists. RESULTS Vivarium is a software tool for building integrative multiscale models. It provides an interface that makes individual models into modules that can be wired together in large composite models, parallelized across multiple CPUs and run with Vivarium's discrete-event simulation engine. Vivarium's utility is demonstrated by building composite models that combine several modeling frameworks: agent-based models, ordinary differential equations, stochastic reaction systems, constraint-based models, solid-body physics and spatial diffusion. This demonstrates just the beginning of what is possible-Vivarium will be able to support future efforts that integrate many more types of models and at many more biological scales. AVAILABILITY AND IMPLEMENTATION The specific models, simulation pipelines and notebooks developed for this article are all available at the vivarium-notebooks repository: https://github.com/vivarium-collective/vivarium-notebooks. Vivarium-core is available at https://github.com/vivarium-collective/vivarium-core, and has been released on Python Package Index. The Vivarium Collective (https://vivarium-collective.github.io) is a repository of freely available Vivarium processes and composites, including the processes used in Section 3. Supplementary Materials provide with an extensive methodology section, with several code listings that demonstrate the basic interfaces. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Eran Agmon
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Ryan K Spangler
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | | | - William Poole
- Computation and Neural Systems, California Institute of Technology, Pasadena, CA 91125, USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22903, USA
| | - Jerry H Morrison
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Markus W Covert
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
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16
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Torres-Castro K, Azimi MS, Varhue WB, Honrado C, Peirce SM, Swami NS. Biophysical quantification of reorganization dynamics of human pancreatic islets during co-culture with adipose-derived stem cells. Analyst 2022; 147:2731-2738. [DOI: 10.1039/d2an00222a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reorganization dynamics of human islets during co-culture with adipose stem cells depends on islet size and the heterogeneity can be assessed based on biomechanical opacity of individual islets.
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Affiliation(s)
- Karina Torres-Castro
- Department of Electrical & Computer Engineering, University of Virginia, Charlottesville, Virginia-22904, USA
| | - Mohammad S. Azimi
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia-22904, USA
| | - Walter B. Varhue
- Department of Electrical & Computer Engineering, University of Virginia, Charlottesville, Virginia-22904, USA
| | - Carlos Honrado
- Department of Electrical & Computer Engineering, University of Virginia, Charlottesville, Virginia-22904, USA
| | - Shayn M. Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia-22904, USA
| | - Nathan S. Swami
- Department of Electrical & Computer Engineering, University of Virginia, Charlottesville, Virginia-22904, USA
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17
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Rikard SM, Myers PJ, Almquist J, Gennemark P, Bruce AC, Wågberg M, Fritsche-Danielson R, Hansson KM, Lazzara MJ, Peirce SM. Mathematical Model Predicts that Acceleration of Diabetic Wound Healing is Dependent on Spatial Distribution of VEGF-A mRNA (AZD8601). Cell Mol Bioeng 2021; 14:321-338. [PMID: 34290839 PMCID: PMC8280265 DOI: 10.1007/s12195-021-00678-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 05/13/2021] [Indexed: 12/15/2022] Open
Abstract
Introduction Pharmacologic approaches for promoting angiogenesis have been utilized to accelerate healing of chronic wounds in diabetic patients with varying degrees of success. We hypothesize that the distribution of proangiogenic drugs in the wound area critically impacts the rate of closure of diabetic wounds. To evaluate this hypothesis, we developed a mathematical model that predicts how spatial distribution of VEGF-A produced by delivery of a modified mRNA (AZD8601) accelerates diabetic wound healing. Methods We modified a previously published model of cutaneous wound healing based on coupled partial differential equations that describe the density of sprouting capillary tips, chemoattractant concentration, and density of blood vessels in a circular wound. Key model parameters identified by a sensitivity analysis were fit to data obtained from an in vivo wound healing study performed in the dorsum of diabetic mice, and a pharmacokinetic model was used to simulate mRNA and VEGF-A distribution following injections with AZD8601. Due to the limited availability of data regarding the spatial distribution of AZD8601 in the wound bed, we performed simulations with perturbations to the location of injections and diffusion coefficient of mRNA to understand the impact of these spatial parameters on wound healing. Results When simulating injections delivered at the wound border, the model predicted that injections delivered on day 0 were more effective in accelerating wound healing than injections delivered at later time points. When the location of the injection was varied throughout the wound space, the model predicted that healing could be accelerated by delivering injections a distance of 1–2 mm inside the wound bed when compared to injections delivered on the same day at the wound border. Perturbations to the diffusivity of mRNA predicted that restricting diffusion of mRNA delayed wound healing by creating an accumulation of VEGF-A at the wound border. Alternatively, a high mRNA diffusivity had no effect on wound healing compared to a simulation with vehicle injection due to the rapid loss of mRNA at the wound border to surrounding tissue. Conclusions These findings highlight the critical need to consider the location of drug delivery and diffusivity of the drug, parameters not typically explored in pre-clinical experiments, when designing and testing drugs for treating diabetic wounds. Supplementary Information The online version contains supplementary material available at 10.1007/s12195-021-00678-9.
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Affiliation(s)
- S Michaela Rikard
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA USA
| | - Paul J Myers
- Department of Chemical Engineering, University of Virginia, Charlottesville, VA USA
| | - Joachim Almquist
- Drug Metabolism and Pharmacokinetics, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.,Fraunhofer-Chalmers Centre, Chalmers Science Park, Gothenburg, Sweden.,Clinical Pharmacology and Quantitative Pharmacology, Clinical Pharmacology and Safety Sciences, R&D, AstraZeneca, Gothenburg, Sweden
| | - Peter Gennemark
- Drug Metabolism and Pharmacokinetics, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.,Department of Biomedical Engineering, Linköping University, Linköping, Sweden
| | - Anthony C Bruce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA USA
| | - Maria Wågberg
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Regina Fritsche-Danielson
- Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Kenny M Hansson
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Matthew J Lazzara
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA USA.,Department of Chemical Engineering, University of Virginia, Charlottesville, VA USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA USA.,Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA USA
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18
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Westman AM, Peirce SM, Christ GJ, Blemker SS. Agent-based model provides insight into the mechanisms behind failed regeneration following volumetric muscle loss injury. PLoS Comput Biol 2021; 17:e1008937. [PMID: 33970905 PMCID: PMC8110270 DOI: 10.1371/journal.pcbi.1008937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 04/01/2021] [Indexed: 12/22/2022] Open
Abstract
Skeletal muscle possesses a remarkable capacity for repair and regeneration following a variety of injuries. When successful, this highly orchestrated regenerative process requires the contribution of several muscle resident cell populations including satellite stem cells (SSCs), fibroblasts, macrophages and vascular cells. However, volumetric muscle loss injuries (VML) involve simultaneous destruction of multiple tissue components (e.g., as a result of battlefield injuries or vehicular accidents) and are so extensive that they exceed the intrinsic capability for scarless wound healing and result in permanent cosmetic and functional deficits. In this scenario, the regenerative process fails and is dominated by an unproductive inflammatory response and accompanying fibrosis. The failure of current regenerative therapeutics to completely restore functional muscle tissue is not surprising considering the incomplete understanding of the cellular mechanisms that drive the regeneration response in the setting of VML injury. To begin to address this profound knowledge gap, we developed an agent-based model to predict the tissue remodeling response following surgical creation of a VML injury. Once the model was able to recapitulate key aspects of the tissue remodeling response in the absence of repair, we validated the model by simulating the tissue remodeling response to VML injury following implantation of either a decellularized extracellular matrix scaffold or a minced muscle graft. The model suggested that the SSC microenvironment and absence of pro-differentiation SSC signals were the most important aspects of failed muscle regeneration in VML injuries. The major implication of this work is that agent-based models may provide a much-needed predictive tool to optimize the design of new therapies, and thereby, accelerate the clinical translation of regenerative therapeutics for VML injuries.
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Affiliation(s)
- Amanda M. Westman
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
| | - Shayn M. Peirce
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
- Ophthalmology, University of Virginia, Charlottesville, Virginia, United States of America
| | - George J. Christ
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
- Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, United States of America
- * E-mail: (GJC); (SSB)
| | - Silvia S. Blemker
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States of America
- Ophthalmology, University of Virginia, Charlottesville, Virginia, United States of America
- Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, United States of America
- Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia, United States of America
- * E-mail: (GJC); (SSB)
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19
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Mendelson AA, Lam F, Peirce SM, Murfee WL. Clinical perspectives on the microcirculation. Microcirculation 2021; 28:e12688. [PMID: 33629399 DOI: 10.1111/micc.12688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 02/22/2021] [Indexed: 11/27/2022]
Affiliation(s)
- Asher A Mendelson
- Section of Critical Care, Department of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Fong Lam
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Walter L Murfee
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
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20
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Virgilio KM, Jones BK, Miller EY, Ghajar-Rahimi E, Martin KS, Peirce SM, Blemker SS. Computational Models Provide Insight into In Vivo Studies and Reveal the Complex Role of Fibrosis in mdx Muscle Regeneration. Ann Biomed Eng 2021; 49:536-547. [PMID: 32748106 DOI: 10.1007/s10439-020-02566-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 07/10/2020] [Indexed: 12/11/2022]
Abstract
Duchenne muscular dystrophy is a pro-fibrotic, muscle wasting disease. Reducing fibrosis is a potential therapeutic target; however, its effect on muscle regeneration is not fully understood. This study (1) used an agent-based model to predict the effect of increased fibrosis in mdx muscle on regeneration from injury, and (2) experimentally tested the resulting model-derived hypothesis. The model predicted that increasing the area fraction of fibrosis decreased regeneration 28 days post injury due to limited growth factor diffusion and impaired cell migration. WT, mdx, and TGFβ-treated mdx mice were used to test this experimentally. TGFβ injections increased the extracellular matrix (ECM) area fraction; however, the passive stiffness of the treated muscle, which was assumed to correlate with ECM protein density, decreased following injections, suggesting that ECM protein density was lower. Further, there was no cross-sectional area (CSA) difference during recovery between the groups. Additional simulations revealed that decreasing the ECM protein density resulted in no difference in CSA, similar to the experiment. These results suggest that increases in ECM area fraction alone are not sufficient to reduce the regenerative capacity of mdx muscle, and that fibrosis is a complex pathological condition requiring further understanding.
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21
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Almquist J, Rikard SM, Wågberg M, Bruce AC, Gennemark P, Fritsche-Danielson R, Chien KR, Peirce SM, Hansson K, Lundahl A. Model-Based Analysis Reveals a Sustained and Dose-Dependent Acceleration of Wound Healing by VEGF-A mRNA (AZD8601). CPT Pharmacometrics Syst Pharmacol 2020; 9:384-394. [PMID: 32438492 PMCID: PMC7376292 DOI: 10.1002/psp4.12516] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 04/24/2020] [Indexed: 12/26/2022]
Abstract
Intradermal delivery of AZD8601, an mRNA designed to produce vascular endothelial growth factor A (VEGF‐A), has previously been shown to accelerate cutaneous wound healing in a murine diabetic model. Here, we develop population pharmacokinetic and pharmacodynamic models aiming to quantify the effect of AZD8601 injections on the dynamics of wound healing. A dataset of 584 open wound area measurements from 131 mice was integrated from 3 independent studies encompassing different doses, dosing timepoints, and number of doses. Evaluation of several candidate models showed that wound healing acceleration is not likely driven directly by time‐dependent VEGF‐A concentration. Instead, we found that administration of AZD8601 induced a sustained acceleration of wound healing depending on the accumulated dose, with a dose producing 50% of the maximal effect of 92 µg. Simulations with this model showed that a single dose of 200 µg AZD8601 can reduce the time to reach 50% wound healing by up to 5 days.
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Affiliation(s)
- Joachim Almquist
- Drug Metabolism and Pharmacokinetics, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.,Fraunhofer-Chalmers Centre, Chalmers Science Park, Gothenburg, Sweden.,Clinical Pharmacology and Quantitative Pharmacology, Clinical Pharmacology and Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - S Michaela Rikard
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
| | - Maria Wågberg
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Anthony C Bruce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
| | - Peter Gennemark
- Drug Metabolism and Pharmacokinetics, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.,Integrative Systems Biology, Department of Biomedical Engineering, Linköping University, Linköping, Sweden
| | - Regina Fritsche-Danielson
- Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Kenneth R Chien
- Integrated Cardiometabolic Center, Karolinska Institute, Huddinge, Sweden.,Department of Cell and Molecular Biology and Medicine, Karolinska Institute, Stockholm, Sweden
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
| | - Kenny Hansson
- Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Anna Lundahl
- Drug Metabolism and Pharmacokinetics, Research and Early Development, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.,Clinical Pharmacology and Quantitative Pharmacology, Clinical Pharmacology and Safety Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
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22
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Corliss BA, Ray HC, Doty RW, Mathews C, Sheybani N, Fitzgerald K, Prince R, Kelly-Goss MR, Murfee WL, Chappell J, Owens GK, Yates PA, Peirce SM. Pericyte Bridges in Homeostasis and Hyperglycemia. Diabetes 2020; 69:1503-1517. [PMID: 32321760 PMCID: PMC7306121 DOI: 10.2337/db19-0471] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 04/17/2020] [Indexed: 12/29/2022]
Abstract
Diabetic retinopathy is a potentially blinding eye disease that threatens the vision of one-ninth of patients with diabetes. Progression of the disease has long been attributed to an initial dropout of pericytes that enwrap the retinal microvasculature. Revealed through retinal vascular digests, a subsequent increase in basement membrane bridges was also observed. Using cell-specific markers, we demonstrate that pericytes rather than endothelial cells colocalize with these bridges. We show that the density of bridges transiently increases with elevation of Ang-2, PDGF-BB, and blood glucose; is rapidly reversed on a timescale of days; and is often associated with a pericyte cell body located off vessel. Cell-specific knockout of KLF4 in pericytes fully replicates this phenotype. In vivo imaging of limbal vessels demonstrates pericyte migration off vessel, with rapid pericyte filopodial-like process formation between adjacent vessels. Accounting for off-vessel and on-vessel pericytes, we observed no pericyte loss relative to nondiabetic control retina. These findings reveal the possibility that pericyte perturbations in location and process formation may play a role in the development of pathological vascular remodeling in diabetic retinopathy.
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Affiliation(s)
- Bruce A Corliss
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - H Clifton Ray
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Richard W Doty
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Corbin Mathews
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Natasha Sheybani
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Kathleen Fitzgerald
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Remi Prince
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Molly R Kelly-Goss
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Walter L Murfee
- Department of Biomedical Engineering, University of Florida, Gainesville, FL
| | - John Chappell
- Fralin Biomedical Research Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA
| | - Gary K Owens
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA
| | - Paul A Yates
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
- Department of Ophthalmometry, University of Virginia School of Medicine, Charlottesville, VA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
- Department of Ophthalmometry, University of Virginia School of Medicine, Charlottesville, VA
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23
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Corliss BA, Doty RW, Mathews C, Yates PA, Zhang T, Peirce SM. REAVER: A program for improved analysis of high-resolution vascular network images. Microcirculation 2020; 27:e12618. [PMID: 32173962 PMCID: PMC7507177 DOI: 10.1111/micc.12618] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/09/2020] [Accepted: 03/11/2020] [Indexed: 12/17/2022]
Abstract
Alterations in vascular networks, including angiogenesis and capillary regression, play key roles in disease, wound healing, and development. The spatial structures of blood vessels can be captured through imaging, but effective characterization of network architecture requires both metrics for quantification and software to carry out the analysis in a high‐throughput and unbiased fashion. We present Rapid Editable Analysis of Vessel Elements Routine (REAVER), an open‐source tool that researchers can use to analyze high‐resolution 2D fluorescent images of blood vessel networks, and assess its performance compared to alternative image analysis programs. Using a dataset of manually analyzed images from a variety of murine tissues as a ground‐truth, REAVER exhibited high accuracy and precision for all vessel architecture metrics quantified, including vessel length density, vessel area fraction, mean vessel diameter, and branchpoint count, along with the highest pixel‐by‐pixel accuracy for the segmentation of the blood vessel network. In instances where REAVER's automated segmentation is inaccurate, we show that combining manual curation with automated analysis improves the accuracy of vessel architecture metrics. REAVER can be used to quantify differences in blood vessel architectures, making it useful in experiments designed to evaluate the effects of different external perturbations (eg, drugs or disease states).
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Affiliation(s)
- Bruce A Corliss
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia
| | - Richard W Doty
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia
| | - Corbin Mathews
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia
| | - Paul A Yates
- Department of Ophthalmology, University of Virginia School of Medicine, Charlottesville, Virginia
| | - Tingting Zhang
- Department of Statistics, University of Virginia, Charlottesville, Virginia
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia.,Department of Ophthalmology, University of Virginia School of Medicine, Charlottesville, Virginia
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24
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Leonard-Duke J, Evans S, Hannan RT, Barker TH, Bates JHT, Bonham CA, Moore BB, Kirschner DE, Peirce SM. Multi-scale models of lung fibrosis. Matrix Biol 2020; 91-92:35-50. [PMID: 32438056 DOI: 10.1016/j.matbio.2020.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/13/2020] [Accepted: 04/15/2020] [Indexed: 02/08/2023]
Abstract
The architectural complexity of the lung is crucial to its ability to function as an organ of gas exchange; the branching tree structure of the airways transforms the tracheal cross-section of only a few square centimeters to a blood-gas barrier with a surface area of tens of square meters and a thickness on the order of a micron or less. Connective tissue comprised largely of collagen and elastic fibers provides structural integrity for this intricate and delicate system. Homeostatic maintenance of this connective tissue, via a balance between catabolic and anabolic enzyme-driven processes, is crucial to life. Accordingly, when homeostasis is disrupted by the excessive production of connective tissue, lung function deteriorates rapidly with grave consequences leading to chronic lung conditions such as pulmonary fibrosis. Understanding how pulmonary fibrosis develops and alters the link between lung structure and function is crucial for diagnosis, prognosis, and therapy. Further information gained could help elaborate how the healing process breaks down leading to chronic disease. Our understanding of fibrotic disease is greatly aided by the intersection of wet lab studies and mathematical and computational modeling. In the present review we will discuss how multi-scale modeling has facilitated our understanding of pulmonary fibrotic disease as well as identified opportunities that remain open and have produced techniques that can be incorporated into this field by borrowing approaches from multi-scale models of fibrosis beyond the lung.
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Affiliation(s)
- Julie Leonard-Duke
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Stephanie Evans
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Riley T Hannan
- Department of Pathology, University of Virginia, Charlottesville, VA 22908, USA
| | - Thomas H Barker
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Jason H T Bates
- Department of Medicine, Vermont Lung Center, University of Vermont College of Medicine, Burlington, VT 05405, USA
| | - Catherine A Bonham
- Division of Pulmonary and Critical Care Medicine, University of Virginia, Charlottesville VA 22908, USA
| | - Bethany B Moore
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, and Department of Microbiology and Immunology, University of Michigan Medical Center, Ann Arbor, MI, 48109, USA
| | - Denise E Kirschner
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA; Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA.
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25
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Bruce AC, Zhuang M, DeRosa CA, Corliss BA, Fraser CL, Peirce SM. Improved Difluoroboron β‐Diketonate Poly(lactic acid) Nanoparticles for Monitoring Wound Oxygenation. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.02463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Sun N, Ning B, Bruce AC, Cao R, Seaman SA, Wang T, Fritsche‐Danielson R, Carlsson LG, Peirce SM, Hu S. Cover Image. Microcirculation 2020. [DOI: 10.1111/micc.12619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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27
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Ruddiman CA, Corliss BA, Peirce SM, Isakson BE. Quantitatively defining spatial patterns of myoendothelial junctions in the arterial wall. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.05128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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28
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Bour RK, Sharma PR, Turner JS, Hess WE, Mintz EL, Latvis CR, Shepherd BR, Presnell SC, McConnell MJ, Highley C, Peirce SM, Christ GJ. Bioprinting on sheet-based scaffolds applied to the creation of implantable tissue-engineered constructs with potentially diverse clinical applications: Tissue-Engineered Muscle Repair (TEMR) as a representative testbed. Connect Tissue Res 2020; 61:216-228. [PMID: 31899969 DOI: 10.1080/03008207.2019.1679800] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Purpose: This report explores the overlooked potential of bioprinting to automate biomanufacturing of simple tissue structures, such as the uniform deposition of (mono)layers of progenitor cells on sheetlike decellularized extracellular matrices (dECM). In this scenario, dECM serves as a biodegradable celldelivery matrix to provide enhanced regenerative microenvironments for tissue repair. The Tissue-Engineered Muscle Repair (TEMR) technology-where muscle progenitor cells are seeded onto a porcine bladder acellular matrix (BAM), serves as a representative testbed for bioprinting applications. Previous work demonstrated that TEMR implantation improved functional outcomes following VML injury in biologically relevant rodent models.Materials and Methods: In the described bioprinting system, a cell-laden hydrogel bioink is used to deposit high cell densities (1.4 × 105-3.5 × 105 cells/cm2), onto both sides of the bladder acellular matrix as proof-of-concept.Results: These bioprinting methods achieve a reproducible and homogeneous distribution of cells, on both sides of the BAM scaffold, after just 24hrs, with cell viability as high as 98%. These preliminary results suggest bioprinting allows for improved dual-sided cell coverage compared to manual-seeding.Conclusions: Bioprinting can enable automated fabrication of TEMR constructs with high fidelity and scalability, while reducing biomanufacturing costs and timelines. Such bioprinting applications are underappreciated, yet critical, to expand the overall biomanufacturing paradigm for tissue engineered medical products. In addition, biofabrication of sheet-like implantable constructs, with cells deposited on both sides, is a process that is both scaffold and cell-type agnostic, and furthermore, is amenable to many geometries, and thus, additional tissue engineering applications beyond skeletal muscle.
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Affiliation(s)
- R K Bour
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - P R Sharma
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - J S Turner
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - W E Hess
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - E L Mintz
- Department of Pathology, University of Virginia, Charlottesville, VA, USA
| | - C R Latvis
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | | | | | - M J McConnell
- Departments of Biochemistry and Molecular Genetics, and Neuroscience, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - C Highley
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA.,Department of Chemical Engineering, University of Virginia, Charlottesville, VA, USA
| | - S M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA.,Department of Plastic Surgery, University of Virginia, Charlottesville, VA, USA
| | - G J Christ
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA.,Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA
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29
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Rikard SM, Athey TL, Nelson AR, Christiansen SLM, Lee JJ, Holmes JW, Peirce SM, Saucerman JJ. Multiscale Coupling of an Agent-Based Model of Tissue Fibrosis and a Logic-Based Model of Intracellular Signaling. Front Physiol 2019; 10:1481. [PMID: 31920691 PMCID: PMC6928129 DOI: 10.3389/fphys.2019.01481] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 11/18/2019] [Indexed: 12/14/2022] Open
Abstract
Wound healing and fibrosis following myocardial infarction (MI) is a dynamic process involving many cell types, extracellular matrix (ECM), and inflammatory cues. As both incidence and survival rates for MI increase, management of post-MI recovery and associated complications are an increasingly important focus. Complexity of the wound healing process and the need for improved therapeutics necessitate a better understanding of the biochemical cues that drive fibrosis. To study the progression of cardiac fibrosis across spatial and temporal scales, we developed a novel hybrid multiscale model that couples a logic-based differential equation (LDE) model of the fibroblast intracellular signaling network with an agent-based model (ABM) of multi-cellular tissue remodeling. The ABM computes information about cytokine and growth factor levels in the environment including TGFβ, TNFα, IL-1β, and IL-6, which are passed as inputs to the LDE model. The LDE model then computes the network signaling state of individual cardiac fibroblasts within the ABM. Based on the current network state, fibroblasts make decisions regarding cytokine secretion and deposition and degradation of collagen. Simulated fibroblasts respond dynamically to rapidly changing extracellular environments and contribute to spatial heterogeneity in model predicted fibrosis, which is governed by many parameters including cell density, cell migration speeds, and cytokine levels. Verification tests confirmed that predictions of the coupled model and network model alone were consistent in response to constant cytokine inputs and furthermore, a subset of coupled model predictions were validated with in vitro experiments with human cardiac fibroblasts. This multiscale framework for cardiac fibrosis will allow for systematic screening of the effects of molecular perturbations in fibroblast signaling on tissue-scale extracellular matrix composition and organization.
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Affiliation(s)
- S Michaela Rikard
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Thomas L Athey
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States
| | - Anders R Nelson
- Department of Pharmacology, University of Virginia, Charlottesville, VA, United States
| | - Steven L M Christiansen
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Jia-Jye Lee
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Jeffrey W Holmes
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States.,Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States.,Department of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States.,Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States
| | - Jeffrey J Saucerman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States.,Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States
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30
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Sun N, Ning B, Bruce AC, Cao R, Seaman SA, Wang T, Fritsche-Danielson R, Carlsson LG, Peirce SM, Hu S. In vivo imaging of hemodynamic redistribution and arteriogenesis across microvascular network. Microcirculation 2019; 27:e12598. [PMID: 31660674 DOI: 10.1111/micc.12598] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 10/17/2019] [Accepted: 10/21/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Arteriogenesis is an important mechanism that contributes to restoration of oxygen supply in chronically ischemic tissues, but remains incompletely understood due to technical limitations. This study presents a novel approach for comprehensive assessment of the remodeling pattern in a complex microvascular network containing multiple collateral microvessels. METHODS We have developed a hardware-software integrated platform for quantitative, longitudinal, and label-free imaging of network-wide hemodynamic changes and arteriogenesis at the single-vessel level. By ligating feeding arteries in the mouse ear, we induced network-wide hemodynamic redistribution and localized arteriogenesis. The utility of this technology was demonstrated by studying the influence of obesity on microvascular arteriogenesis. RESULTS Simultaneously monitoring the remodeling of competing collateral arterioles revealed a new, inverse relationship between initial vascular resistance and extent of arteriogenesis. Obese mice exhibited similar remodeling responses to lean mice through the first week, including diameter increase and flow upregulation in collateral arterioles. However, these gains were subsequently lost in obese mice. CONCLUSIONS Capable of label-free, comprehensive, and dynamic quantification of structural and functional changes in the microvascular network in vivo, this platform opens up new opportunities to study the mechanisms of microvascular arteriogenesis, its implications in diseases, and approaches to pharmacologically rectify microvascular dysfunction.
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Affiliation(s)
- Naidi Sun
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Bo Ning
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Anthony C Bruce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Rui Cao
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Scott A Seaman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Tianxiong Wang
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | | | - Leif G Carlsson
- Bioscience Heart Failure, Cardiovascular, Renal and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Song Hu
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
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31
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Corliss BA, Ray HC, Mathews C, Fitzgerald K, Doty RW, Smolko CM, Shariff H, Peirce SM, Yates PA. Myh11 Lineage Corneal Endothelial Cells and ASCs Populate Corneal Endothelium. Invest Ophthalmol Vis Sci 2019; 60:5095-5103. [PMID: 31826231 PMCID: PMC6905658 DOI: 10.1167/iovs.19-27276] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/24/2019] [Indexed: 12/13/2022] Open
Abstract
Purpose To establish Myh11 as a marker of a subset of corneal endothelial cells (CECs), and to demonstrate the feasibility of restoring the corneal endothelium with Myh11-lineage (Myh11-Lin[+]) adipose-derived stromal cells (ASCs). Methods Intraperitoneal administration of tamoxifen and (Z)-4-hydroxytamoxifen eyedrops were used to trace the lineage of Myh11-expressing cells with the Myh11-Cre-ERT2-flox-tdTomato mouse model. Immunostaining and Western blot characterized marker expression and spatial distribution of Myh11-Lin(+) cells in the cornea, and administration of 5-ethynyl-2'-deoxyuridine labeled proliferating cells. ASCs were isolated from epididymal adipose Myh11+ mural cells and treated with cornea differentiation media to evaluate corneal endothelial differentiation potential. Differentiated ASCs were injected into the anterior chamber to test for incorporation into corneal endothelium following scratch injury. Results A subset of CECs express Myh11, a marker previously thought restricted to only mural cells. Myh11-Lin(+) CECs marked a stable subpopulation of cells in the cornea endothelium. Myh11-Lin(+) ASCs undergo CEC differentiation in vitro and incorporate into injured corneal endothelium. Conclusions Dystrophy and dysfunction of the corneal endothelium accounts for almost half of all corneal transplants, the maintenance of the cornea endothelium is poorly understood, and there are a lack of mouse models to study specific CEC populations. We establish a mouse model that can trace the cell fate of a subpopulation of CECs based on Myh11 expression. A subset of ASCs that share this Myh11 transcriptional lineage are capable of differentiating into CECs that can incorporate into injured corneal endothelium, revealing a potential cell source for creating engineered transplant material.
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Affiliation(s)
- Bruce A. Corliss
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - H. Clifton Ray
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - Corbin Mathews
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - Kathleen Fitzgerald
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - Richard W. Doty
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - Chris M. Smolko
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - Hamzah Shariff
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - Shayn M. Peirce
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
- Department of Ophthalmology, University of Virginia, Charlottesville, Virginia, United States
| | - Paul A. Yates
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, United States
- Department of Ophthalmology, University of Virginia, Charlottesville, Virginia, United States
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32
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Corliss BA, Delalio LJ, Stevenson Keller TC, Keller AS, Keller DA, Corliss BH, Beers JM, Peirce SM, Isakson BE. Vascular Expression of Hemoglobin Alpha in Antarctic Icefish Supports Iron Limitation as Novel Evolutionary Driver. Front Physiol 2019; 10:1389. [PMID: 31780954 PMCID: PMC6861181 DOI: 10.3389/fphys.2019.01389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 10/24/2019] [Indexed: 12/16/2022] Open
Abstract
Frigid temperatures of the Southern Ocean are known to be an evolutionary driver in Antarctic fish. For example, many fish have reduced red blood cell (RBC) concentration to minimize vascular resistance. Via the oxygen-carrying protein hemoglobin, RBCs contain the vast majority of the body's iron, which is known to be a limiting nutrient in marine ecosystems. Since lower RBC levels also lead to reduced iron requirements, we hypothesize that low iron availability was an additional evolutionary driver of Antarctic fish speciation. Antarctic Icefish of the family Channichthyidae are known to have an extreme alteration of iron metabolism due to loss of RBCs and two iron-binding proteins, hemoglobin and myoglobin. Loss of hemoglobin is considered a maladaptive trait allowed by relaxation of predator selection since extreme adaptations are required to compensate for the loss of oxygen-carrying capacity. However, iron dependency minimization may have driven hemoglobin loss instead of a random evolutionary event. Given the variety of functions that hemoglobin serves in the endothelium, we suspected the protein corresponding to the 3' truncated Hbα fragment (Hbα-3'f) that was not genetically excluded by icefish may still be expressed as a protein. Using whole mount confocal microscopy, we show that Hbα-3'f is expressed in the vascular endothelium of icefish retina, suggesting this Hbα fragment may still serve an important role in the endothelium. These observations support a novel hypothesis that iron minimization could have influenced icefish speciation with the loss of the iron-binding portion of Hbα in Hbα-3'f, as well as hemoglobin β and myoglobin.
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Affiliation(s)
- Bruce A Corliss
- Biomedical Engineering Department, University of Virginia, Charlottesville, VA, United States
| | - Leon J Delalio
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - T C Stevenson Keller
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States.,Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Alexander S Keller
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States
| | | | - Bruce H Corliss
- Graduate School of Oceanography, University of Rhode Island, Kingston, RI, United States
| | - Jody M Beers
- Department of Biology, College of Charleston, Charleston, SC, United States
| | - Shayn M Peirce
- Biomedical Engineering Department, University of Virginia, Charlottesville, VA, United States
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States.,Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, VA, United States
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33
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Corliss BA, Ray HC, Patrie JT, Mansour J, Kesting S, Park JH, Rohde G, Yates PA, Janes KA, Peirce SM. CIRCOAST: a statistical hypothesis test for cellular colocalization with network structures. Bioinformatics 2019; 35:506-514. [PMID: 30032263 PMCID: PMC6361237 DOI: 10.1093/bioinformatics/bty638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 07/17/2018] [Indexed: 12/22/2022] Open
Abstract
Motivation Colocalization of structures in biomedical images can lead to insights into biological behaviors. One class of colocalization problems is examining an annular structure (disk-shaped such as a cell, vesicle or molecule) interacting with a network structure (vascular, neuronal, cytoskeletal, organellar). Examining colocalization events across conditions is often complicated by changes in density of both structure types, confounding traditional statistical approaches since colocalization cannot be normalized to the density of both structure types simultaneously. We have developed a technique to measure colocalization independent of structure density and applied it to characterizing intercellular colocation with blood vessel networks. This technique could be used to analyze colocalization of any annular structure with an arbitrarily shaped network structure. Results We present the circular colocalization affinity with network structures test (CIRCOAST), a novel statistical hypothesis test to probe for enriched network colocalization in 2D z-projected multichannel images by using agent-based Monte Carlo modeling and image processing to generate the pseudo-null distribution of random cell placement unique to each image. This hypothesis test was validated by confirming that adipose-derived stem cells (ASCs) exhibit enriched colocalization with endothelial cells forming arborized networks in culture and then applied to show that locally delivered ASCs have enriched colocalization with murine retinal microvasculature in a model of diabetic retinopathy. We demonstrate that the CIRCOAST test provides superior power and type I error rates in characterizing intercellular colocalization compared to generic approaches that are confounded by changes in cell or vessel density. Availability and implementation CIRCOAST source code available at: https://github.com/uva-peirce-cottler-lab/ARCAS. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Bruce A Corliss
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - H Clifton Ray
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - James T Patrie
- Department of Public Health Sciences, University of Virginia, Charlottesville, VA, USA
| | - Jennifer Mansour
- Department of Biology, University of Virginia, Charlottesville, VA, USA
| | - Sam Kesting
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Janice H Park
- Department of Biology, University of Virginia, Charlottesville, VA, USA
| | - Gustavo Rohde
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Paul A Yates
- Department of Ophthalmology, University of Virginia, Charlottesville, VA, USA
| | - Kevin A Janes
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
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34
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Corliss BA, Mathews C, Doty R, Rohde G, Peirce SM. Cover Image. Microcirculation 2019. [DOI: 10.1111/micc.12582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Lee JJ, Talman L, Peirce SM, Holmes JW. Spatial scaling in multiscale models: methods for coupling agent-based and finite-element models of wound healing. Biomech Model Mechanobiol 2019; 18:1297-1309. [PMID: 30968216 DOI: 10.1007/s10237-019-01145-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 03/26/2019] [Indexed: 11/27/2022]
Abstract
Multiscale models that couple agent-based modeling (ABM) and finite-element modeling (FEM) allow the dynamic simulation of tissue remodeling and wound healing, with mechanical environment influencing cellular behaviors even as tissue remodeling modifies mechanics. One of the challenges in coupling ABM to FEM is that these two domains typically employ grid or element sizes that differ by several orders of magnitude. Here, we develop and demonstrate an interpolation-based method for mapping between ABM and FEM domains of different resolutions that is suitable for linear and nonlinear FEM meshes and balances accuracy with computational demands. We then explore the effects of refining the FEM mesh and the ABM grid in the setting of a fully coupled model. ABM grid refinement studies showed unexpected effects of grid size whenever cells were present at a high enough density for crowding to affect proliferation and migration. In contrast to an FE-only model, refining the FE mesh in the coupled model increased strain differences between adjacent finite elements. Allowing strain-dependent feedback on collagen turnover magnified the effects of regional heterogeneity, producing highly nonlinear spatial and temporal responses. Our results suggest that the choice of both ABM grid and FEM mesh density in coupled models must be guided by experimental data and accompanied by careful grid and mesh refinement studies in the individual domains as well as the fully coupled model.
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Affiliation(s)
- Jia-Jye Lee
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Lee Talman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, USA
| | - Jeffrey W Holmes
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA.
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, USA.
- Department of Medicine, University of Virginia, Charlottesville, VA, USA.
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36
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Corliss BA, Doty R, Matthews C, Peirce SM. REAVER: An Improved Image Analysis Pipeline for Quantifying Microvascular Networks. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.525.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bruce A. Corliss
- Department of Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
| | - Richard Doty
- Department of Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
| | - Corbin Matthews
- Department of Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
| | - Shayn M. Peirce
- Department of Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
- Department of OphthalmologyUniversity of VirginiaCharlottesvilleVA
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37
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Hess DL, Kelly-Goss MR, Cherepanova OA, Nguyen AT, Baylis RA, Tkachenko S, Annex BH, Peirce SM, Owens GK. Perivascular cell-specific knockout of the stem cell pluripotency gene Oct4 inhibits angiogenesis. Nat Commun 2019; 10:967. [PMID: 30814500 PMCID: PMC6393549 DOI: 10.1038/s41467-019-08811-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 01/31/2019] [Indexed: 12/23/2022] Open
Abstract
The stem cell pluripotency factor Oct4 serves a critical protective role during atherosclerotic plaque development by promoting smooth muscle cell (SMC) investment. Here, we show using Myh11-CreERT2 lineage-tracing with inducible SMC and pericyte (SMC-P) knockout of Oct4 that Oct4 regulates perivascular cell migration and recruitment during angiogenesis. Knockout of Oct4 in perivascular cells significantly impairs perivascular cell migration, increases perivascular cell death, delays endothelial cell migration, and promotes vascular leakage following corneal angiogenic stimulus. Knockout of Oct4 in perivascular cells also impairs perfusion recovery and decreases angiogenesis following hindlimb ischemia. Transcriptomic analyses demonstrate that expression of the migratory gene Slit3 is reduced following loss of Oct4 in cultured SMCs, and in Oct4-deficient perivascular cells in ischemic hindlimb muscle. Together, these results provide evidence that Oct4 plays an essential role within perivascular cells in injury- and hypoxia-induced angiogenesis.
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Affiliation(s)
- Daniel L Hess
- Robert M. Berne Cardiovascular Research Center, University of Virginia-School of Medicine, 415 Lane Road, Suite 1010, Charlottesville, VA, 22908, USA
- Department of Biochemistry and Molecular Genetics, University of Virginia-School of Medicine, Charlottesville, VA, 22908, USA
| | - Molly R Kelly-Goss
- Robert M. Berne Cardiovascular Research Center, University of Virginia-School of Medicine, 415 Lane Road, Suite 1010, Charlottesville, VA, 22908, USA
- Department of Biomedical Engineering, University of Virginia-School of Medicine, Charlottesville, VA, 22908, USA
| | - Olga A Cherepanova
- Lerner Research Institute, 9500 Euclid Avenue, NB50, Cleveland, OH, 44195, USA
| | - Anh T Nguyen
- Robert M. Berne Cardiovascular Research Center, University of Virginia-School of Medicine, 415 Lane Road, Suite 1010, Charlottesville, VA, 22908, USA
| | - Richard A Baylis
- Robert M. Berne Cardiovascular Research Center, University of Virginia-School of Medicine, 415 Lane Road, Suite 1010, Charlottesville, VA, 22908, USA
- Department of Biochemistry and Molecular Genetics, University of Virginia-School of Medicine, Charlottesville, VA, 22908, USA
| | - Svyatoslav Tkachenko
- Lerner Research Institute, 9500 Euclid Avenue, JJN3-01, Cleveland, OH, 44195, USA
| | - Brian H Annex
- Robert M. Berne Cardiovascular Research Center, University of Virginia-School of Medicine, 415 Lane Road, Suite 1010, Charlottesville, VA, 22908, USA
- Department of Medicine, Cardiovascular Medicine, University of Virginia, Charlottesville, VA, 22908, USA
| | - Shayn M Peirce
- Robert M. Berne Cardiovascular Research Center, University of Virginia-School of Medicine, 415 Lane Road, Suite 1010, Charlottesville, VA, 22908, USA
- Department of Biomedical Engineering, University of Virginia-School of Medicine, Charlottesville, VA, 22908, USA
| | - Gary K Owens
- Robert M. Berne Cardiovascular Research Center, University of Virginia-School of Medicine, 415 Lane Road, Suite 1010, Charlottesville, VA, 22908, USA.
- Department of Molecular Physiology and Biological Physics, University of Virginia-School of Medicine, Charlottesville, VA, 22908, USA.
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38
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Corliss BA, Ray HC, Patrie JT, Mansour J, Kesting S, Park JH, Rohde G, Yates PA, Janes KA, Peirce SM. CIRCOAST: a statistical hypothesis test for cellular colocalization with network structures. Bioinformatics 2019; 35:720-721. [PMID: 30289437 PMCID: PMC6379036 DOI: 10.1093/bioinformatics/bty797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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39
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Corliss BA, Mathews C, Doty R, Rohde G, Peirce SM. Methods to label, image, and analyze the complex structural architectures of microvascular networks. Microcirculation 2019; 26:e12520. [PMID: 30548558 PMCID: PMC6561846 DOI: 10.1111/micc.12520] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/31/2018] [Accepted: 11/26/2018] [Indexed: 12/30/2022]
Abstract
Microvascular networks play key roles in oxygen transport and nutrient delivery to meet the varied and dynamic metabolic needs of different tissues throughout the body, and their spatial architectures of interconnected blood vessel segments are highly complex. Moreover, functional adaptations of the microcirculation enabled by structural adaptations in microvascular network architecture are required for development, wound healing, and often invoked in disease conditions, including the top eight causes of death in the Unites States. Effective characterization of microvascular network architectures is not only limited by the available techniques to visualize microvessels but also reliant on the available quantitative metrics that accurately delineate between spatial patterns in altered networks. In this review, we survey models used for studying the microvasculature, methods to label and image microvessels, and the metrics and software packages used to quantify microvascular networks. These programs have provided researchers with invaluable tools, yet we estimate that they have collectively attained low adoption rates, possibly due to limitations with basic validation, segmentation performance, and nonstandard sets of quantification metrics. To address these existing constraints, we discuss opportunities to improve effectiveness, rigor, and reproducibility of microvascular network quantification to better serve the current and future needs of microvascular research.
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Affiliation(s)
- Bruce A Corliss
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia
| | - Corbin Mathews
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia
| | - Richard Doty
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia
| | - Gustavo Rohde
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia
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40
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Urner S, Planas-Paz L, Hilger LS, Henning C, Branopolski A, Kelly-Goss M, Stanczuk L, Pitter B, Montanez E, Peirce SM, Mäkinen T, Lammert E. Identification of ILK as a critical regulator of VEGFR3 signalling and lymphatic vascular growth. EMBO J 2018; 38:embj.201899322. [PMID: 30518533 PMCID: PMC6331728 DOI: 10.15252/embj.201899322] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 11/05/2018] [Accepted: 11/07/2018] [Indexed: 12/20/2022] Open
Abstract
Vascular endothelial growth factor receptor‐3 (VEGFR3) signalling promotes lymphangiogenesis. While there are many reported mechanisms of VEGFR3 activation, there is little understanding of how VEGFR3 signalling is attenuated to prevent lymphatic vascular overgrowth and ensure proper lymph vessel development. Here, we show that endothelial cell‐specific depletion of integrin‐linked kinase (ILK) in mouse embryos hyper‐activates VEGFR3 signalling and leads to overgrowth of the jugular lymph sacs/primordial thoracic ducts, oedema and embryonic lethality. Lymphatic endothelial cell (LEC)‐specific deletion of Ilk in adult mice initiates lymphatic vascular expansion in different organs, including cornea, skin and myocardium. Knockdown of ILK in human LECs triggers VEGFR3 tyrosine phosphorylation and proliferation. ILK is further found to impede interactions between VEGFR3 and β1 integrin in vitro and in vivo, and endothelial cell‐specific deletion of an Itgb1 allele rescues the excessive lymphatic vascular growth observed upon ILK depletion. Finally, mechanical stimulation disrupts the assembly of ILK and β1 integrin, releasing the integrin to enable its interaction with VEGFR3. Our data suggest that ILK facilitates mechanically regulated VEGFR3 signalling via controlling its interaction with β1 integrin and thus ensures proper development of lymphatic vessels.
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Affiliation(s)
- Sofia Urner
- Institute of Metabolic Physiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Lara Planas-Paz
- Institute of Metabolic Physiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Laura Sophie Hilger
- Institute of Metabolic Physiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Carina Henning
- Institute of Metabolic Physiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Anna Branopolski
- Institute of Metabolic Physiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,Division of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Molly Kelly-Goss
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Lukas Stanczuk
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Bettina Pitter
- Walter-Brendel-Center of Experimental Medicine, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Eloi Montanez
- Walter-Brendel-Center of Experimental Medicine, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Taija Mäkinen
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Eckhard Lammert
- Institute of Metabolic Physiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany .,Institute for Beta Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
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41
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Suarez-Martinez AD, Peirce SM, Isakson BE, Nice M, Wang J, Lounsbury KM, Scallan JP, Murfee WL. Induction of microvascular network growth in the mouse mesentery. Microcirculation 2018; 25:e12502. [PMID: 30178505 DOI: 10.1111/micc.12502] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 08/24/2018] [Accepted: 08/30/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Motivated by observations of mesenteries harvested from mice treated with tamoxifen dissolved in oil for inducible gene mutation studies, the objective of this study was to demonstrate that microvascular growth can be induced in the avascular mouse mesentery tissue. METHODS C57BL/6 mice were administered an IP injection for five consecutive days of: saline, sunflower oil, tamoxifen dissolved in sunflower oil, corn oil, or peanut oil. RESULTS Twenty-one days post-injection, zero tissues from saline group contained branching microvascular networks. In contrast, all tissues from the three oils and tamoxifen groups contained vascular networks with arterioles, venules, and capillaries. Smooth muscle cells and pericytes were present in their expected locations and wrapping morphologies. Significant increases in vascularized tissue area and vascular density were observed when compared to saline group, but sunflower oil and tamoxifen group were not significantly different. Vascularized tissues also contained LYVE-1-positive and Prox1-positive lymphatic networks, indicating that lymphangiogenesis was stimulated. When comparing the different oils, vascularized tissue area and vascular density of sunflower oil were significantly higher than corn and peanut oils. CONCLUSIONS These results provide novel evidence supporting that induction of microvascular network growth into the normally avascular mouse mesentery is possible.
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Affiliation(s)
- Ariana D Suarez-Martinez
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana.,Department of Biomedical Engineering, University of Florida, Gainesville, Florida
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia
| | - Brant E Isakson
- Department of Molecular Physiology & Biological Physics, University of Virginia, Charlottesville, Virginia
| | - Matthew Nice
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana
| | - Jack Wang
- Department of Biomedical Engineering, University of Florida, Gainesville, Florida
| | - Karen M Lounsbury
- Department of Pharmacology, Larner College of Medicine, University of Vermont, Burlington, Vermont
| | - Joshua P Scallan
- Department of Molecular Pharmacology & Physiology, University of South Florida, Tampa, Florida
| | - Walter L Murfee
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana.,Department of Biomedical Engineering, University of Florida, Gainesville, Florida
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42
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Virgilio KM, Martin KS, Peirce SM, Blemker SS. Agent-based model illustrates the role of the microenvironment in regeneration in healthy and mdx skeletal muscle. J Appl Physiol (1985) 2018; 125:1424-1439. [PMID: 30070607 DOI: 10.1152/japplphysiol.00379.2018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a progressive muscle-wasting disease with no effective treatment. Multiple mechanisms are thought to contribute to muscle wasting, including increased susceptibility to contraction-induced damage, chronic inflammation, fibrosis, altered satellite stem cell (SSC) dynamics, and impaired regenerative capacity. The goals of this project were to 1) develop an agent-based model of skeletal muscle that predicts the dynamic regenerative response of muscle cells, fibroblasts, SSCs, and inflammatory cells as a result of contraction-induced injury, 2) calibrate and validate the model parameters based on comparisons with published experimental measurements, and 3) use the model to investigate how changing isolated and combined factors known to be associated with DMD (e.g., altered fibroblast or SSC behaviors) influence muscle regeneration. Our predictions revealed that the percent of injured muscle that recovered 28 days after injury was dependent on the peak SSC counts following injury. In simulations with near-full cross-sectional area recovery (healthy, 4-wk mdx, 3-mo mdx), the SSC counts correlated with the extent of initial injury; however, in simulations with impaired regeneration (9-mo mdx), the peak SSC counts were suppressed relative to initial injury. The differences in SSC counts between these groups were emergent predictions dependent on altered microenvironment factors known to be associated with DMD. Multiple cell types influenced the peak number of SSCs, but no individual parameter predicted the differences in SSC counts. This finding suggests that interventions to target the microenvironment rather than SSCs directly could be an effective method for improving regeneration in impaired muscle. NEW & NOTEWORTHY A computational model predicted that satellite stem cell (SSC) counts are correlated with muscle cross-sectional area (CSA) recovery following injury. In simulations with impaired CSA recovery, SSC counts are suppressed relative to healthy muscle. The suppressed SSC counts were an emergent model prediction, because all simulations had equal initial SSC counts. Fibroblast and anti-inflammatory macrophage counts influenced SSC counts, but no single factor was able to predict the pathological differences in SSC counts that lead to impaired regeneration.
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Affiliation(s)
- Kelley M Virgilio
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - Kyle S Martin
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - Silvia S Blemker
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia.,Department of Orthopaedic Surgery, University of Virginia , Charlottesville, Virginia.,Department of Mechanical and Aerospace Engineering, University of Virginia , Charlottesville, Virginia
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43
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Haskins RM, Nguyen AT, Alencar GF, Billaud M, Kelly-Goss MR, Good ME, Bottermann K, Klibanov AL, French BA, Harris TE, Peirce SM, Isakson BE, Owens GK. Klf4 has an unexpected protective role in perivascular cells within the microvasculature. Am J Physiol Heart Circ Physiol 2018; 315:H402-H414. [PMID: 29631369 PMCID: PMC6139624 DOI: 10.1152/ajpheart.00084.2018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/19/2018] [Accepted: 04/04/2018] [Indexed: 11/22/2022]
Abstract
Recent smooth muscle cell (SMC) lineage-tracing studies have revealed that SMCs undergo remarkable changes in phenotype during development of atherosclerosis. Of major interest, we demonstrated that Kruppel-like factor 4 (KLF4) in SMCs is detrimental for overall lesion pathogenesis, in that SMC-specific conditional knockout of the KLF4 gene ( Klf4) resulted in smaller, more-stable lesions that exhibited marked reductions in the numbers of SMC-derived macrophage- and mesenchymal stem cell-like cells. However, since the clinical consequences of atherosclerosis typically occur well after our reproductive years, we sought to identify beneficial KLF4-dependent SMC functions that were likely to be evolutionarily conserved. We tested the hypothesis that KLF4-dependent SMC transitions play an important role in the tissue injury-repair process. Using SMC-specific lineage-tracing mice positive and negative for simultaneous SMC-specific conditional knockout of Klf4, we demonstrate that SMCs in the remodeling heart after ischemia-reperfusion injury (IRI) express KLF4 and transition to a KLF4-dependent macrophage-like state and a KLF4-independent myofibroblast-like state. Moreover, heart failure after IRI was exacerbated in SMC Klf4 knockout mice. Surprisingly, we observed a significant cardiac dilation in SMC Klf4 knockout mice before IRI as well as a reduction in peripheral resistance. KLF4 chromatin immunoprecipitation-sequencing analysis on mesenteric vascular beds identified potential baseline SMC KLF4 target genes in numerous pathways, including PDGF and FGF. Moreover, microvascular tissue beds in SMC Klf4 knockout mice had gaps in lineage-traced SMC coverage along the resistance arteries and exhibited increased permeability. Together, these results provide novel evidence that Klf4 has a critical maintenance role within microvascular SMCs: it is required for normal SMC function and coverage of resistance arteries. NEW & NOTEWORTHY We report novel evidence that the Kruppel-like factor 4 gene ( Klf4) has a critical maintenance role within microvascular smooth muscle cells (SMCs). SMC-specific Klf4 knockout at baseline resulted in a loss of lineage-traced SMC coverage of resistance arteries, dilation of resistance arteries, increased blood flow, and cardiac dilation.
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Affiliation(s)
- Ryan M Haskins
- Department of Pathology, University of Virginia , Charlottesville, Virginia
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
| | - Anh T Nguyen
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
| | - Gabriel F Alencar
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
- Department of Biochemistry and Molecular Genetics, University of Virginia , Charlottesville, Virginia
| | - Marie Billaud
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
| | - Molly R Kelly-Goss
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - Miranda E Good
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
| | | | - Alexander L Klibanov
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - Brent A French
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - Thurl E Harris
- Department of Pharmacology, University of Virginia , Charlottesville, Virginia
| | - Shayn M Peirce
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
- Department of Molecular Physiology and Biological Physics, University of Virginia , Charlottesville, Virginia
| | - Gary K Owens
- Robert M. Berne Cardiovascular Research Center, University of Virginia , Charlottesville, Virginia
- Department of Molecular Physiology and Biological Physics, University of Virginia , Charlottesville, Virginia
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44
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Walpole J, Mac Gabhann F, Peirce SM, Chappell JC. Agent-based computational model of retinal angiogenesis simulates microvascular network morphology as a function of pericyte coverage. Microcirculation 2018; 24. [PMID: 28791758 DOI: 10.1111/micc.12393] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 06/29/2017] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Define a role for perivascular cells during developmental retinal angiogenesis in the context of EC Notch1-DLL4 signaling at the multicellular network level. METHODS The retinal vasculature is highly sensitive to growth factor-mediated intercellular signaling. Although EC signaling has been explored in detail, it remains unclear how PC function to modulate these signals that lead to a diverse set of vascular network patterns in health and disease. We have developed an ABM of retinal angiogenesis that incorporates both ECs and PCs to investigate the formation of vascular network patterns as a function of pericyte coverage. We use our model to test the hypothesis that PC modulate Notch1-DLL4 signaling in endothelial cell-endothelial cell interactions. RESULTS Agent-based model (ABM) simulations that include PCs more accurately predict experimentally observed vascular network morphologies than simulations that lack PCs, suggesting that PCs may influence sprouting behaviors through physical blockade of endothelial intercellular connections. CONCLUSIONS This study supports a role for PCs as a physical buffer to signal propagation during vascular network formation-a barrier that may be important for generating healthy microvascular network patterns.
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Affiliation(s)
- Joseph Walpole
- Department of Biomedical Engineering, University of Virginia, Charlottesvile, VA, USA
| | - Feilim Mac Gabhann
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesvile, VA, USA
| | - John C Chappell
- Virginia Tech Carilion Research Institute, Department of Biomedical Engineering and Mechanics, Roanoke, VA, USA
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45
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Tavakol DN, Broshkevitch CJ, Guilford WH, Peirce SM. Design and implementation of a student-taught course on research in regenerative medicine. Adv Physiol Educ 2018; 42:360-367. [PMID: 29761714 DOI: 10.1152/advan.00157.2017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In the Undergraduate School of Engineering and Applied Sciences (SEAS) at the University of Virginia (UVa), there are few opportunities for undergraduate students to teach, let alone develop, an introductory course for their major. As two undergraduate engineering students (D. N. Tavakol and C. J. Broshkevitch), we were among the first students to take advantage of a new initiative at UVa SEAS to offer student-led courses. As part of this new program, we designed a 1000-level, 1-credit, pass-fail course entitled Introduction to Research in Regenerative Medicine. During a student's first year at the University, opportunities to build research skills and gain exposure to topics within the field of the biomedical sciences are relatively rare, so, to fill this gap, we focused our course on teaching primarily freshman undergraduate students how to synthesize and contextualize scientific literature, covering both basic science and clinical applications. At the end of the course, students self-reported increased confidence in reading and discussing scientific papers and review articles. The critical impact of this course lies not only in an early introduction to the popularized field of regenerative medicine, but also encouragement for younger students to participate in research early on and to appreciate the value of interdisciplinary interactions. The teaching model can be extended for implementation of student-taught introductory courses across diverse undergraduate major tracks at an institution.
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Affiliation(s)
- Daniel Naveed Tavakol
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - Cara J Broshkevitch
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - William H Guilford
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
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46
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Janes KA, Chandran PL, Ford RM, Lazzara MJ, Papin JA, Peirce SM, Saucerman JJ, Lauffenburger DA. An engineering design approach to systems biology. Integr Biol (Camb) 2018; 9:574-583. [PMID: 28590470 DOI: 10.1039/c7ib00014f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Measuring and modeling the integrated behavior of biomolecular-cellular networks is central to systems biology. Over several decades, systems biology has been shaped by quantitative biologists, physicists, mathematicians, and engineers in different ways. However, the basic and applied versions of systems biology are not typically distinguished, which blurs the separate aspirations of the field and its potential for real-world impact. Here, we articulate an engineering approach to systems biology, which applies educational philosophy, engineering design, and predictive models to solve contemporary problems in an age of biomedical Big Data. A concerted effort to train systems bioengineers will provide a versatile workforce capable of tackling the diverse challenges faced by the biotechnological and pharmaceutical sectors in a modern, information-dense economy.
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Affiliation(s)
- Kevin A Janes
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA.
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47
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Hess DL, Kelly-Goss MR, Cherepanova O, Nguyen AT, Annex BH, Peirce SM, Owens GK. Abstract 008: Perivascular Cell-specific Knockout of the Stem Cell Pluripotency Gene Oct4 Inhibits Angiogenesis in Part by Attenuating Perivascular and Endothelial Cell Migration. Arterioscler Thromb Vasc Biol 2018. [DOI: 10.1161/atvb.38.suppl_1.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective:
Angiogenesis requires coordinated migration of endothelial cells (EC) and perivascular cells, including smooth muscle cells and pericytes (SMC-P). Perivascular cell-specific mechanisms by which SMC-P migrate and invest EC remain largely unknown. Herein, we used Myh11-CreER
T2
SMC-P lineage tracing, combined with SMC-P specific knockout of the stem cell pluripotency gene Oct4, to test the hypothesis that SMC-P derived Oct4 regulates perivascular cell migration and recruitment necessary for angiogenesis.
Methods and Results:
Myh11-CreER
T2
ROSA floxed STOP eYFP Oct4
WT/WT
and Myh11-CreER
T2
ROSA floxed STOP eYFP Oct4
FL/FL
littermate mice were injected with tamoxifen from 6-8 weeks of age to permanently label Myh11-expressing cells with eYFP, without or with Oct4 KO, respectively. Mice were subjected to either corneal alkali burn or hindlimb ischemia (HLI), monitored by live confocal imaging and laser doppler perfusion respectively, and sacrificed for tissue analysis. SMC-P Oct4 KO resulted in markedly impaired eYFP+ (SMC-P derived) migration and increased vascular leak following corneal alkali burn. EC neovascular area and migration distance were also significantly decreased in SMC-P specific Oct4 KO mice. Following HLI, SMC-P Oct4 KO mice had impaired perfusion recovery and decreased capillary density. Slit3 was expressed in eYFP+ cells of the microvasculature in both cornea and muscle and was downregulated following Oct4 KO. RNA-seq and qRT-PCR analysis of cultured SMC revealed dysregulation of Slit3 as well as additional members of the Slit-Robo pathway of guidance genes, including downregulation of the receptors Robo1 and Robo2 and upregulation of Slit2 following loss of Oct4.
Conclusions:
Taken together, we demonstrate that SMC-P derived Oct4 is essential for angiogenesis in both corneal alkali burn and HLI models. These effects are at least partially due to Oct4-dependent regulation of the Slit-Robo pathway in SMC-P, with Oct4 KO resulting in dysregulated migration of both EC and SMC-P. To our knowledge, this is the first direct evidence that loss of a single gene exclusively in SMC-P impacts angiogenesis following injury.
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48
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Murfee WL, Peirce SM. Microfluidics Technologies and Approaches for Studying the Microcirculation. Microcirculation 2018; 24. [PMID: 28470950 DOI: 10.1111/micc.12377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Accepted: 04/25/2017] [Indexed: 12/16/2022]
Abstract
A challenge for basic and applied microvascular research is the lack of ex vivo experimental platforms that mimic the structural and functional complexity that is inherent to the microcirculation in living organisms. This Special Topic Issue highlights the emergence of microfluidic-based approaches as tools for recapitulating physiologically relevant network architectures and hemodynamics to study biochemical and biomechanical mechanisms of microvascular function and adaptation. This collection of review and original research articles showcases the value of microfluidics in bridging the gap between in vivo and in vitro model systems by demonstrating the utility of this technology for investigating microvascular dynamics spanning angiogenesis to blood cell rheology and for preclinical evaluation of therapeutic strategies that target the microcirculation.
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Affiliation(s)
- Walter L Murfee
- Department of Biomedical Engineering, Tulane University, New Orleans, LA, USA
| | - Shayn M Peirce
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
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Rikard M, Patolia H, Chappell J, Peirce SM. Agent Based Model of Endothelial Cell and Pericyte Interactions During Angiogenesis in the Germinal Matrix. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.573.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Michaela Rikard
- Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
| | - Harsh Patolia
- Virginia Tech Carilion School of Medicine and Research InstituteRoanokeVA
| | - John Chappell
- Virginia Tech Carilion School of Medicine and Research InstituteRoanokeVA
| | - Shayn M. Peirce
- Biomedical EngineeringUniversity of VirginiaCharlottesvilleVA
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50
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Danan D, Lehman CE, Mendez RE, Langford B, Koors PD, Dougherty MI, Peirce SM, Gioeli DG, Jameson MJ. Effect of Adipose-Derived Stem Cells on Head and Neck Squamous Cell Carcinoma. Otolaryngol Head Neck Surg 2018; 158:882-888. [PMID: 29313435 DOI: 10.1177/0194599817750361] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective Patients with head and neck squamous cell carcinoma (HNSCC) have significant wound-healing difficulties. While adipose-derived stem cells (ASCs) facilitate wound healing, ASCs may accelerate recurrence when applied to a cancer field. This study evaluates the impact of ASCs on HNSCC cell lines in vitro and in vivo. Study Design In vitro experiments using HNSCC cell lines and in vivo mouse experiments. Setting Basic science laboratory. Subjects and Methods Impact of ASCs on in vitro proliferation, survival, and migration was assessed using 8 HNSCC cell lines. One cell line was used in a mouse orthotopic xenograft model to evaluate in vivo tumor growth in the presence and absence of ASCs. Results Addition of ASCs did not increase the number of HNSCC cells. In clonogenic assays to assess cell survival, addition of ASCs increased colony formation only in SCC9 cells (maximal effect 2.3-fold, P < .02) but not in other HNSCC cell lines. In scratch assays to assess migration, fluorescently tagged ASCs did not migrate appreciably and did not increase the rate of wound closure in HNSCC cell lines. Addition of ASCs to HNSCC xenografts did not increase tumor growth. Conclusion Using multiple in vitro and in vivo approaches, ASCs did not significantly stimulate HNSCC cell proliferation or migration and increased survival in only a single cell line. These findings preliminarily suggest that the use of ASCs may be safe in the setting of HNSCC but that further investigation on the therapeutic use of ASCs in the setting of HNSCC is needed.
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Affiliation(s)
- Deepa Danan
- 1 Division of Head and Neck Oncologic and Microvascular Surgery, Department of Otolaryngology-Head and Neck Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Christine E Lehman
- 1 Division of Head and Neck Oncologic and Microvascular Surgery, Department of Otolaryngology-Head and Neck Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Rolando E Mendez
- 1 Division of Head and Neck Oncologic and Microvascular Surgery, Department of Otolaryngology-Head and Neck Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Brian Langford
- 1 Division of Head and Neck Oncologic and Microvascular Surgery, Department of Otolaryngology-Head and Neck Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Paul D Koors
- 1 Division of Head and Neck Oncologic and Microvascular Surgery, Department of Otolaryngology-Head and Neck Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Michael I Dougherty
- 1 Division of Head and Neck Oncologic and Microvascular Surgery, Department of Otolaryngology-Head and Neck Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Shayn M Peirce
- 2 Department of Biomedical Engineering, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Daniel G Gioeli
- 3 Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Mark J Jameson
- 1 Division of Head and Neck Oncologic and Microvascular Surgery, Department of Otolaryngology-Head and Neck Surgery, University of Virginia Health System, Charlottesville, Virginia, USA
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