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Independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology

Tissue boundaries and interfaces are engines of morphogenesis in vivo. However, despite a wealth of micropatterning approaches available to control tissue size, shape, and mechanical environment in vitro, fine-scale spatial control of cell positioning within tissue constructs remains an engineering...

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Detalles Bibliográficos
Autores principales: Prahl, Louis S., Porter, Catherine M., Liu, Jiageng, Viola, John M., Hughes, Alex J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10164898/
https://www.ncbi.nlm.nih.gov/pubmed/37168559
http://dx.doi.org/10.1016/j.isci.2023.106657
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author Prahl, Louis S.
Porter, Catherine M.
Liu, Jiageng
Viola, John M.
Hughes, Alex J.
author_facet Prahl, Louis S.
Porter, Catherine M.
Liu, Jiageng
Viola, John M.
Hughes, Alex J.
author_sort Prahl, Louis S.
collection PubMed
description Tissue boundaries and interfaces are engines of morphogenesis in vivo. However, despite a wealth of micropatterning approaches available to control tissue size, shape, and mechanical environment in vitro, fine-scale spatial control of cell positioning within tissue constructs remains an engineering challenge. To address this, we augment DNA “velcro” technology for selective patterning of ssDNA-labeled cells on mechanically defined photoactive polyacrylamide hydrogels. Hydrogels bearing photopatterned single-stranded DNA (ssDNA) features for cell capture are then co-functionalized with extracellular matrix (ECM) proteins to support subsequent adhesion of patterned tissues. ECM protein co-functionalization does not alter ssDNA pattern fidelity, cell capture, or hydrogel elastic stiffness. This approach enables mechanobiology studies and measurements of signaling activity at dynamic cell interfaces with precise initial patterning. Combining DNA velcro patterning and ECM functionalization provides independent control of initial cell placement, adhesion, and mechanics, constituting a new tool for studying biological interfaces and for programming multicellular interactions in engineered tissues.
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spelling pubmed-101648982023-05-09 Independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology Prahl, Louis S. Porter, Catherine M. Liu, Jiageng Viola, John M. Hughes, Alex J. iScience Article Tissue boundaries and interfaces are engines of morphogenesis in vivo. However, despite a wealth of micropatterning approaches available to control tissue size, shape, and mechanical environment in vitro, fine-scale spatial control of cell positioning within tissue constructs remains an engineering challenge. To address this, we augment DNA “velcro” technology for selective patterning of ssDNA-labeled cells on mechanically defined photoactive polyacrylamide hydrogels. Hydrogels bearing photopatterned single-stranded DNA (ssDNA) features for cell capture are then co-functionalized with extracellular matrix (ECM) proteins to support subsequent adhesion of patterned tissues. ECM protein co-functionalization does not alter ssDNA pattern fidelity, cell capture, or hydrogel elastic stiffness. This approach enables mechanobiology studies and measurements of signaling activity at dynamic cell interfaces with precise initial patterning. Combining DNA velcro patterning and ECM functionalization provides independent control of initial cell placement, adhesion, and mechanics, constituting a new tool for studying biological interfaces and for programming multicellular interactions in engineered tissues. Elsevier 2023-04-11 /pmc/articles/PMC10164898/ /pubmed/37168559 http://dx.doi.org/10.1016/j.isci.2023.106657 Text en © 2023 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Article
Prahl, Louis S.
Porter, Catherine M.
Liu, Jiageng
Viola, John M.
Hughes, Alex J.
Independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology
title Independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology
title_full Independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology
title_fullStr Independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology
title_full_unstemmed Independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology
title_short Independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology
title_sort independent control over cell patterning and adhesion on hydrogel substrates for tissue interface mechanobiology
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10164898/
https://www.ncbi.nlm.nih.gov/pubmed/37168559
http://dx.doi.org/10.1016/j.isci.2023.106657
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