1
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Engrácia DM, Pinto CIG, Mendes F. Cancer 3D Models for Metallodrug Preclinical Testing. Int J Mol Sci 2023; 24:11915. [PMID: 37569291 PMCID: PMC10418685 DOI: 10.3390/ijms241511915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/20/2023] [Accepted: 07/22/2023] [Indexed: 08/13/2023] Open
Abstract
Despite being standard tools in research, the application of cellular and animal models in drug development is hindered by several limitations, such as limited translational significance, animal ethics, and inter-species physiological differences. In this regard, 3D cellular models can be presented as a step forward in biomedical research, allowing for mimicking tissue complexity more accurately than traditional 2D models, while also contributing to reducing the use of animal models. In cancer research, 3D models have the potential to replicate the tumor microenvironment, which is a key modulator of cancer cell behavior and drug response. These features make cancer 3D models prime tools for the preclinical study of anti-tumoral drugs, especially considering that there is still a need to develop effective anti-cancer drugs with high selectivity, minimal toxicity, and reduced side effects. Metallodrugs, especially transition-metal-based complexes, have been extensively studied for their therapeutic potential in cancer therapy due to their distinctive properties; however, despite the benefits of 3D models, their application in metallodrug testing is currently limited. Thus, this article reviews some of the most common types of 3D models in cancer research, as well as the application of 3D models in metallodrug preclinical studies.
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Affiliation(s)
- Diogo M. Engrácia
- Center for Nuclear Sciences and Technologies, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal; (D.M.E.); (C.I.G.P.)
| | - Catarina I. G. Pinto
- Center for Nuclear Sciences and Technologies, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal; (D.M.E.); (C.I.G.P.)
| | - Filipa Mendes
- Center for Nuclear Sciences and Technologies, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal; (D.M.E.); (C.I.G.P.)
- Department of Nuclear Sciences and Engineering, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
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2
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Molugu K, Battistini GA, Heaster TM, Rouw J, Guzman EC, Skala MC, Saha K. Label-Free Imaging to Track Reprogramming of Human Somatic Cells. GEN BIOTECHNOLOGY 2022; 1:176-191. [PMID: 35586336 PMCID: PMC9092522 DOI: 10.1089/genbio.2022.0001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 03/28/2022] [Indexed: 11/12/2022]
Abstract
The process of reprogramming patient samples to human-induced pluripotent stem cells (iPSCs) is stochastic, asynchronous, and inefficient, leading to a heterogeneous population of cells. In this study, we track the reprogramming status of patient-derived erythroid progenitor cells (EPCs) at the single-cell level during reprogramming with label-free live-cell imaging of cellular metabolism and nuclear morphometry to identify high-quality iPSCs. EPCs isolated from human peripheral blood of three donors were used for our proof-of-principle study. We found distinct patterns of autofluorescence lifetime for the reduced form of nicotinamide adenine dinucleotide (phosphate) and flavin adenine dinucleotide during reprogramming. Random forest models classified iPSCs with ∼95% accuracy, which enabled the successful isolation of iPSC lines from reprogramming cultures. Reprogramming trajectories resolved at the single-cell level indicated significant reprogramming heterogeneity along different branches of cell states. This combination of micropatterning, autofluorescence imaging, and machine learning provides a unique, real-time, and nondestructive method to assess the quality of iPSCs in a biomanufacturing process, which could have downstream impacts in regenerative medicine, cell/gene therapy, and disease modeling.
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Affiliation(s)
- Kaivalya Molugu
- Biophysics Graduate Program, University of Wisconsin-Madison, Madison, Wisconsin, USA; Madison, Wisconsin, USA
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin, USA; Madison, Wisconsin, USA
| | - Giovanni A. Battistini
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin, USA; Madison, Wisconsin, USA
| | - Tiffany M. Heaster
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA; and Madison, Wisconsin, USA
- Morgridge Institute for Research, Madison, Wisconsin, USA
| | - Jacob Rouw
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin, USA; Madison, Wisconsin, USA
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA; and Madison, Wisconsin, USA
| | | | - Melissa C. Skala
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA; and Madison, Wisconsin, USA
- Morgridge Institute for Research, Madison, Wisconsin, USA
| | - Krishanu Saha
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin, USA; Madison, Wisconsin, USA
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA; and Madison, Wisconsin, USA
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3
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Molugu K, Harkness T, Carlson-Stevermer J, Prestil R, Piscopo NJ, Seymour SK, Knight GT, Ashton RS, Saha K. Tracking and Predicting Human Somatic Cell Reprogramming Using Nuclear Characteristics. Biophys J 2019; 118:2086-2102. [PMID: 31699335 DOI: 10.1016/j.bpj.2019.10.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 10/11/2019] [Accepted: 10/15/2019] [Indexed: 02/06/2023] Open
Abstract
Reprogramming of human somatic cells to induced pluripotent stem cells (iPSCs) generates valuable resources for disease modeling, toxicology, cell therapy, and regenerative medicine. However, the reprogramming process can be stochastic and inefficient, creating many partially reprogrammed intermediates and non-reprogrammed cells in addition to fully reprogrammed iPSCs. Much of the work to identify, evaluate, and enrich for iPSCs during reprogramming relies on methods that fix, destroy, or singularize cell cultures, thereby disrupting each cell's microenvironment. Here, we develop a micropatterned substrate that allows for dynamic live-cell microscopy of hundreds of cell subpopulations undergoing reprogramming while preserving many of the biophysical and biochemical cues within the cells' microenvironment. On this substrate, we were able to both watch and physically confine cells into discrete islands during the reprogramming of human somatic cells from skin biopsies and blood draws obtained from healthy donors. Using high-content analysis, we identified a combination of eight nuclear characteristics that can be used to generate a computational model to predict the progression of reprogramming and distinguish partially reprogrammed cells from those that are fully reprogrammed. This approach to track reprogramming in situ using micropatterned substrates could aid in biomanufacturing of therapeutically relevant iPSCs and be used to elucidate multiscale cellular changes (cell-cell interactions as well as subcellular changes) that accompany human cell fate transitions.
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Affiliation(s)
- Kaivalya Molugu
- Graduate Program in Biophysics, University of Wisconsin-Madison, Madison, Wisconsin; Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Ty Harkness
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Jared Carlson-Stevermer
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Ryan Prestil
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Nicole J Piscopo
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Stephanie K Seymour
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Gavin T Knight
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Randolph S Ashton
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Krishanu Saha
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin.
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4
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Zhao H, Sha J, Wang X, Jiang Y, Chen T, Wu T, Chen X, Ji H, Gao Y, Xie L, Ma Y. Spatiotemporal control of polymer brush formation through photoinduced radical polymerization regulated by DMD light modulation. LAB ON A CHIP 2019; 19:2651-2662. [PMID: 31250865 DOI: 10.1039/c9lc00419j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Spatially arranged polymer brushes provide the essential capability of precisely regulating the surface physicochemical and functional properties of various substrates. A novel and flexible polymer brush patterning methodology, which is based on employing a digital mirror device (DMD)-based light modulation technique to spatiotemporally regulate a surface-initiated photoinduced atom transfer radical polymerization (photo-ATRP) process, is presented. Various characterization techniques confirm that the spatially and/or temporally controlled brush formation results in complex PEG-derived brush patterns in accordance with a customized digital image design. A series of step-and-exposure strategies, including in situ multiple exposure, dynamic multiple exposure and dynamic sequential exposure, are developed to implement spatiotemporal regulation of the photo-ATRP process, leading to complex patterned and gradient brushes featuring binary functionalities, pyramid nanostructures and radial directional chemical gradients. Moreover, tunable and radial directional concentration gradients of various biomacromolecules (e.g., streptavidin) are obtained through preparation of height gradients of azido-functionalized brushes and subsequent orthogonal chemical activation aimed at specific protein immobilization. Finally, a unidirectional concentration gradient of fibronectin, surrounded by non-fouling PEG brushes, is fabricated and applied for human umbilical vein endothelial cell (HUVEC) adhesion experiments, whose preliminary results indicate gradient-dependent cell adhesion behavior in response to the concentration gradient of fibronectin. The presented fabrication technique could be integrated with microfluidic devices for sensors and bio-reactors, paving the way for novel approaches for lab-on-a-chip technologies.
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Affiliation(s)
- Haili Zhao
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China.
| | - Jin Sha
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China.
| | - Xiaofeng Wang
- National Center for International Joint Research of Micro-nano Molding Technology, School of Mechanics and Engineering Sciences, Zhengzhou University, Zhengzhou, China
| | - Yongchao Jiang
- National Center for International Joint Research of Micro-nano Molding Technology, School of Mechanics and Engineering Sciences, Zhengzhou University, Zhengzhou, China
| | - Tao Chen
- School of Physics and Astronomy, Yunnan University, Kunming, China
| | - Tong Wu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Xin Chen
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China.
| | - Huajian Ji
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China.
| | - Yang Gao
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China.
| | - Linsheng Xie
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China.
| | - Yulu Ma
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China.
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5
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Knight GT, Lundin BF, Iyer N, Ashton LM, Sethares WA, Willett RM, Ashton RS. Engineering induction of singular neural rosette emergence within hPSC-derived tissues. eLife 2018; 7:37549. [PMID: 30371350 PMCID: PMC6205811 DOI: 10.7554/elife.37549] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 10/15/2018] [Indexed: 12/13/2022] Open
Abstract
Human pluripotent stem cell (hPSC)-derived neural organoids display unprecedented emergent properties. Yet in contrast to the singular neuroepithelial tube from which the entire central nervous system (CNS) develops in vivo, current organoid protocols yield tissues with multiple neuroepithelial units, a.k.a. neural rosettes, each acting as independent morphogenesis centers and thereby confounding coordinated, reproducible tissue development. Here, we discover that controlling initial tissue morphology can effectively (>80%) induce single neural rosette emergence within hPSC-derived forebrain and spinal tissues. Notably, the optimal tissue morphology for observing singular rosette emergence was distinct for forebrain versus spinal tissues due to previously unknown differences in ROCK-mediated cell contractility. Following release of geometric confinement, the tissues displayed radial outgrowth with maintenance of a singular neuroepithelium and peripheral neuronal differentiation. Thus, we have identified neural tissue morphology as a critical biophysical parameter for controlling in vitro neural tissue morphogenesis furthering advancement towards biomanufacture of CNS tissues with biomimetic anatomy and physiology.
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Affiliation(s)
- Gavin T Knight
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, United States.,Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, United States
| | - Brady F Lundin
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, United States.,Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, United States
| | - Nisha Iyer
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, United States
| | - Lydia Mt Ashton
- Department of Consumer Science, University of Wisconsin-Madison, Madison, United States
| | - William A Sethares
- Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, United States
| | - Rebecca M Willett
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, United States.,Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, United States
| | - Randolph Scott Ashton
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, United States.,Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, United States
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6
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Martinez-Rivas A, González-Quijano GK, Proa-Coronado S, Séverac C, Dague E. Methods of Micropatterning and Manipulation of Cells for Biomedical Applications. MICROMACHINES 2017; 8:E347. [PMID: 30400538 PMCID: PMC6187909 DOI: 10.3390/mi8120347] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 12/12/2022]
Abstract
Micropatterning and manipulation of mammalian and bacterial cells are important in biomedical studies to perform in vitro assays and to evaluate biochemical processes accurately, establishing the basis for implementing biomedical microelectromechanical systems (bioMEMS), point-of-care (POC) devices, or organs-on-chips (OOC), which impact on neurological, oncological, dermatologic, or tissue engineering issues as part of personalized medicine. Cell patterning represents a crucial step in fundamental and applied biological studies in vitro, hence today there are a myriad of materials and techniques that allow one to immobilize and manipulate cells, imitating the 3D in vivo milieu. This review focuses on current physical cell patterning, plus chemical and a combination of them both that utilizes different materials and cutting-edge micro-nanofabrication methodologies.
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Affiliation(s)
- Adrian Martinez-Rivas
- CIC, Instituto Politécnico Nacional (IPN), Av. Juan de Dios Bátiz S/N, Nueva Industrial Vallejo, 07738 Mexico City, Mexico.
| | - Génesis K González-Quijano
- CONACYT-CNMN, Instituto Politécnico Nacional (IPN), Av. Luis Enrique Erro s/n, Nueva Industrial Vallejo, 07738 Mexico City, Mexico.
| | - Sergio Proa-Coronado
- ENCB, Instituto Politécnico Nacional (IPN), Av. Wilfrido Massieu, Unidad Adolfo López Mateos, 07738 Mexico City, Mexico.
| | | | - Etienne Dague
- LAAS-CNRS, Université de Toulouse, CNRS, Toulouse, France.
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7
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Avella-Oliver M, Carrascosa J, Puchades R, Maquieira Á. Diffractive Protein Gratings as Optically Active Transducers for High-Throughput Label-free Immunosensing. Anal Chem 2017; 89:9002-9008. [DOI: 10.1021/acs.analchem.7b01649] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Miquel Avella-Oliver
- Instituto
Interuniversitario de Investigación de Reconocimiento Molecular
y Desarrollo Tecnológico (IDM), Universitat Politècnica
de València, Universitat de València, 46022 Valencia, Spain
| | - Javier Carrascosa
- Instituto
Interuniversitario de Investigación de Reconocimiento Molecular
y Desarrollo Tecnológico (IDM), Universitat Politècnica
de València, Universitat de València, 46022 Valencia, Spain
| | - Rosa Puchades
- Instituto
Interuniversitario de Investigación de Reconocimiento Molecular
y Desarrollo Tecnológico (IDM), Universitat Politècnica
de València, Universitat de València, 46022 Valencia, Spain
- Departmento
de Quı́mica, Universitat Politècnica de València, 46022 Valencia, Spain
| | - Ángel Maquieira
- Instituto
Interuniversitario de Investigación de Reconocimiento Molecular
y Desarrollo Tecnológico (IDM), Universitat Politècnica
de València, Universitat de València, 46022 Valencia, Spain
- Departmento
de Quı́mica, Universitat Politècnica de València, 46022 Valencia, Spain
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8
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Liu AP, Chaudhuri O, Parekh SH. New advances in probing cell-extracellular matrix interactions. Integr Biol (Camb) 2017; 9:383-405. [PMID: 28352896 PMCID: PMC5708530 DOI: 10.1039/c6ib00251j] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 03/20/2017] [Indexed: 12/17/2022]
Abstract
The extracellular matrix (ECM) provides structural and biochemical support to cells within tissues. An emerging body of evidence has established that the ECM plays a key role in cell mechanotransduction - the study of coupling between mechanical inputs and cellular phenotype - through either mediating transmission of forces to the cells, or presenting mechanical cues that guide cellular behaviors. Recent progress in cell mechanotransduction research has been facilitated by advances of experimental tools, particularly microtechnologies, engineered biomaterials, and imaging and analytical methods. Microtechnologies have enabled the design and fabrication of controlled physical microenvironments for the study and measurement of cell-ECM interactions. Advances in engineered biomaterials have allowed researchers to develop synthetic ECMs that mimic tissue microenvironments and investigate the impact of altered physicochemical properties on various cellular processes. Finally, advanced imaging and spectroscopy techniques have facilitated the visualization of the complex interaction between cells and ECM in vitro and in living tissues. This review will highlight the application of recent innovations in these areas to probing cell-ECM interactions. We believe cross-disciplinary approaches, combining aspects of the different technologies reviewed here, will inspire innovative ideas to further elucidate the secrets of ECM-mediated cell control.
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Affiliation(s)
- Allen P. Liu
- Department of Mechanical Engineering , University of Michigan , Ann Arbor , MI 48109 , USA .
- Department of Biomedical Engineering , University of Michigan , Ann Arbor , MI 48109 , USA
- Cellular and Molecular Biology Program , University of Michigan , Ann Arbor , MI 48109 , USA
- Biophysics Program , University of Michigan , Ann Arbor , MI 48109 , USA
| | - Ovijit Chaudhuri
- Department of Mechanical Engineering , Stanford University , Stanford , CA 94305 , USA .
| | - Sapun H. Parekh
- Department of Molecular Spectroscopy , Max Planck Institute for Polymer Research , Mainz 55128 , Germany .
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9
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Carlson-Stevermer J, Goedland M, Steyer B, Movaghar A, Lou M, Kohlenberg L, Prestil R, Saha K. High-Content Analysis of CRISPR-Cas9 Gene-Edited Human Embryonic Stem Cells. Stem Cell Reports 2016; 6:109-20. [PMID: 26771356 PMCID: PMC4720027 DOI: 10.1016/j.stemcr.2015.11.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 11/27/2015] [Accepted: 11/27/2015] [Indexed: 11/26/2022] Open
Abstract
CRISPR-Cas9 gene editing of human cells and tissues holds much promise to advance medicine and biology, but standard editing methods require weeks to months of reagent preparation and selection where much or all of the initial edited samples are destroyed during analysis. ArrayEdit, a simple approach utilizing surface-modified multiwell plates containing one-pot transcribed single-guide RNAs, separates thousands of edited cell populations for automated, live, high-content imaging and analysis. The approach lowers the time and cost of gene editing and produces edited human embryonic stem cells at high efficiencies. Edited genes can be expressed in both pluripotent stem cells and differentiated cells. This preclinical platform adds important capabilities to observe editing and selection in situ within complex structures generated by human cells, ultimately enabling optical and other molecular perturbations in the editing workflow that could refine the specificity and versatility of gene editing. High-content analysis of arrayed hESC colonies increased gene-editing efficiency Rapid one-pot transcription of sgRNAs can be multiplexed to edit hESCs hESCs gene edited on ArrayEdit exhibited proper phenotypes ArrayEdit provides a new window into the process of gene editing human cells
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Affiliation(s)
- Jared Carlson-Stevermer
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Madelyn Goedland
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Benjamin Steyer
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Arezoo Movaghar
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Meng Lou
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Lucille Kohlenberg
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Ryan Prestil
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Krishanu Saha
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53715, USA; Department of Medical History and Bioethics, University of Wisconsin-Madison, Madison, WI 53715, USA.
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10
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Knight GT, Sha J, Ashton RS. Micropatterned, clickable culture substrates enable in situ spatiotemporal control of human PSC-derived neural tissue morphology. Chem Commun (Camb) 2016; 51:5238-41. [PMID: 25688384 PMCID: PMC4456773 DOI: 10.1039/c4cc08665a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In situ regulation of the morphology of neural tissues derived from human pluripotent stem cells using micropatterned, clickable substrates.
We describe a modular culture platform that enables spatiotemporal control of the morphology of 2D neural tissues derived from human pluripotent stem cells (hPSCs) by simply adding clickable peptides to the media. It should be widely applicable for elucidating how spatiotemporal changes in morphology and substrate biochemistry regulate tissue morphogenesis.
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Affiliation(s)
- G T Knight
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI 53706, USA.
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11
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Harkness T, McNulty JD, Prestil R, Seymour SK, Klann T, Murrell M, Ashton RS, Saha K. High-content imaging with micropatterned multiwell plates reveals influence of cell geometry and cytoskeleton on chromatin dynamics. Biotechnol J 2015; 10:1555-67. [PMID: 26097126 DOI: 10.1002/biot.201400756] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/24/2015] [Accepted: 06/11/2015] [Indexed: 01/14/2023]
Abstract
Understanding the mechanisms underpinning cellular responses to microenvironmental cues requires tight control not only of the complex milieu of soluble signaling factors, extracellular matrix (ECM) connections and cell-cell contacts within cell culture, but also of the biophysics of human cells. Advances in biomaterial fabrication technologies have recently facilitated detailed examination of cellular biophysics and revealed that constraints on cell geometry arising from the cellular microenvironment influence a wide variety of human cell behaviors. Here, we create an in vitro platform capable of precise and independent control of biochemical and biophysical microenvironmental cues by adapting microcontact printing technology into the format of standard six- to 96-well plates to create MicroContact Printed Well Plates (μCP Well Plates). Automated high-content imaging of human cells seeded on μCP Well Plates revealed tight, highly consistent control of single-cell geometry, cytoskeletal organization, and nuclear elongation. Detailed subcellular imaging of the actin cytoskeleton and chromatin within live human fibroblasts on μCP Well Plates was then used to describe a new relationship between cellular geometry and chromatin dynamics. In summary, the μCP Well Plate platform is an enabling high-content screening technology for human cell biology and cellular engineering efforts that seek to identify key biochemical and biophysical cues in the cellular microenvironment.
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Affiliation(s)
- Ty Harkness
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Jason D McNulty
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA.,Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Ryan Prestil
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Stephanie K Seymour
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Tyler Klann
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Michael Murrell
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, Yale University, CT, USA.,Systems Biology Institute, Yale University, CT, USA
| | - Randolph S Ashton
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Krishanu Saha
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, USA. .,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA.
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12
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Micropatterning strategies to engineer controlled cell and tissue architecture in vitro. Biotechniques 2015; 58:13-23. [PMID: 25605576 DOI: 10.2144/000114245] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 12/26/2014] [Indexed: 11/23/2022] Open
Abstract
Micropatterning strategies, which enable control over cell and tissue architecture in vitro, have emerged as powerful platforms for modelling tissue microenvironments at different scales and complexities. Here, we provide an overview of popular micropatterning techniques, along with detailed descriptions, to guide new users through the decision making process of which micropatterning procedure to use, and how to best obtain desired tissue patterns. Example techniques and the types of biological observations that can be made are provided from the literature. A focus is placed on microcontact printing to obtain co-cultures of patterned, confluent sheets, and the challenges associated with optimizing this protocol. Many issues associated with microcontact printing, however, are relevant to all micropatterning methodologies. Finally, we briefly discuss challenges in addressing key limitations associated with current micropatterning technologies.
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13
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Knight GT, Klann T, McNulty JD, Ashton RS. Fabricating complex culture substrates using robotic microcontact printing (R-µCP) and sequential nucleophilic substitution. J Vis Exp 2014:e52186. [PMID: 25407245 PMCID: PMC4353402 DOI: 10.3791/52186] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In tissue engineering, it is desirable to exhibit spatial control of tissue morphology and cell fate in culture on the micron scale. Culture substrates presenting grafted poly(ethylene glycol) (PEG) brushes can be used to achieve this task by creating microscale, non-fouling and cell adhesion resistant regions as well as regions where cells participate in biospecific interactions with covalently tethered ligands. To engineer complex tissues using such substrates, it will be necessary to sequentially pattern multiple PEG brushes functionalized to confer differential bioactivities and aligned in microscale orientations that mimic in vivo niches. Microcontact printing (μCP) is a versatile technique to pattern such grafted PEG brushes, but manual μCP cannot be performed with microscale precision. Thus, we combined advanced robotics with soft-lithography techniques and emerging surface chemistry reactions to develop a robotic microcontact printing (R-μCP)-assisted method for fabricating culture substrates with complex, microscale, and highly ordered patterns of PEG brushes presenting orthogonal 'click' chemistries. Here, we describe in detail the workflow to manufacture such substrates.
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Affiliation(s)
- Gavin T Knight
- Department of Biomedical Engineering, University of Wisconsin, Madison
| | - Tyler Klann
- Department of Biomedical Engineering, University of Wisconsin, Madison
| | - Jason D McNulty
- Department of Biomedical Engineering, University of Wisconsin, Madison; Department of Mechanical Engineering, University of Wisconsin, Madison
| | - Randolph S Ashton
- Department of Biomedical Engineering, University of Wisconsin, Madison;
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Cordie T, Harkness T, Jing X, Carlson-Stevermer J, Mi HY, Turng LS, Saha K. Nanofibrous Electrospun Polymers for Reprogramming Human Cells. Cell Mol Bioeng 2014. [DOI: 10.1007/s12195-014-0341-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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