Scaffold Pore Curvature Influences ΜSC Fate through Differential Cellular Organization and YAP/TAZ Activity
Tissue engineering aims to repair, restore, and/or replace tissues in the human body as an alternative to grafts and prostheses. Biomaterial scaffolds can be utilized to provide a three-dimensional microenvironment to facilitate tissue regeneration. Previously, we reported that scaffold pore size in...
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MDPI AG
2022-04-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/9/4499 |
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| author | W. Benton Swanson Maiko Omi Seth M. Woodbury Lindsey M. Douglas Miranda Eberle Peter X. Ma Nan E. Hatch Yuji Mishina |
| author_facet | W. Benton Swanson Maiko Omi Seth M. Woodbury Lindsey M. Douglas Miranda Eberle Peter X. Ma Nan E. Hatch Yuji Mishina |
| author_sort | W. Benton Swanson |
| collection | DOAJ |
| description | Tissue engineering aims to repair, restore, and/or replace tissues in the human body as an alternative to grafts and prostheses. Biomaterial scaffolds can be utilized to provide a three-dimensional microenvironment to facilitate tissue regeneration. Previously, we reported that scaffold pore size influences vascularization and extracellular matrix composition both in vivo and in vitro, to ultimately influence tissue phenotype for regenerating cranial suture and bone tissues, which have markedly different tissue properties despite similar multipotent stem cell populations. To rationally design biomaterials for specific cell and tissue fate specification, it is critical to understand the molecular processes governed by cell-biomaterial interactions, which guide cell fate specification. Building on our previous work, in this report we investigated the hypothesis that scaffold pore curvature, the direct consequence of pore size, modulates the differentiation trajectory of mesenchymal stem cells (MSCs) through alterations in the cytoskeleton. First, we demonstrated that sufficiently small pores facilitate cell clustering in subcutaneous explants cultured in vivo, which we previously reported to demonstrate stem tissue phenotype both in vivo and in vitro. Based on this observation, we cultured cell-scaffold constructs in vitro to assess early time point interactions between cells and the matrix as a function of pore size. We demonstrate that principle curvature directly influences nuclear aspect and cell aggregation in vitro. Scaffold pores with a sufficiently low degree of principle curvature enables cell differentiation; pharmacologic inhibition of actin cytoskeleton polymerization in these scaffolds decreased differentiation, indicating a critical role of the cytoskeleton in transducing cues from the scaffold pore microenvironment to the cell nucleus. We fabricated a macropore model, which allows for three-dimensional confocal imaging and demonstrates that a higher principle curvature facilitates cell aggregation and the formation of a potentially protective niche within scaffold macropores which prevents MSC differentiation and retains their stemness. Sufficiently high principle curvature upregulates yes-associated protein (YAP) phosphorylation while decreased principle curvature downregulates YAP phosphorylation and increases YAP nuclear translocation with subsequent transcriptional activation towards an osteogenic differentiation fate. Finally, we demonstrate that the inhibition of the YAP/TAZ pathway causes a defect in differentiation, while YAP/TAZ activation causes premature differentiation in a curvature-dependent way when modulated by verteporfin (VP) and 1-oleyl-lysophosphatidic acid (LPA), respectively, confirming the critical role of biomaterials-mediated YAP/TAZ signaling in cell differentiation and fate specification. Our data support that the principle curvature of scaffold macropores is a critical design criterion which guides the differentiation trajectory of mesenchymal stem cells’ scaffolds. Biomaterial-mediated regulation of YAP/TAZ may significantly contribute to influencing the regenerative outcomes of biomaterials-based tissue engineering strategies through their specific pore design. |
| first_indexed | 2024-03-10T04:08:24Z |
| format | Article |
| id | doaj.art-a4517768cbc94a979be294a3603e86d0 |
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| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-10T04:08:24Z |
| publishDate | 2022-04-01 |
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| spelling | doaj.art-a4517768cbc94a979be294a3603e86d02023-11-23T08:18:04ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-04-01239449910.3390/ijms23094499Scaffold Pore Curvature Influences ΜSC Fate through Differential Cellular Organization and YAP/TAZ ActivityW. Benton Swanson0Maiko Omi1Seth M. Woodbury2Lindsey M. Douglas3Miranda Eberle4Peter X. Ma5Nan E. Hatch6Yuji Mishina7Department of Biologic and Materials Science, Division of Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USADepartment of Biologic and Materials Science, Division of Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USADepartment of Biologic and Materials Science, Division of Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USADepartment of Biologic and Materials Science, Division of Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USADepartment of Biologic and Materials Science, Division of Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USADepartment of Biologic and Materials Science, Division of Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USADepartment of Orthodontics and Pediatric Dentistry, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USADepartment of Biologic and Materials Science, Division of Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USATissue engineering aims to repair, restore, and/or replace tissues in the human body as an alternative to grafts and prostheses. Biomaterial scaffolds can be utilized to provide a three-dimensional microenvironment to facilitate tissue regeneration. Previously, we reported that scaffold pore size influences vascularization and extracellular matrix composition both in vivo and in vitro, to ultimately influence tissue phenotype for regenerating cranial suture and bone tissues, which have markedly different tissue properties despite similar multipotent stem cell populations. To rationally design biomaterials for specific cell and tissue fate specification, it is critical to understand the molecular processes governed by cell-biomaterial interactions, which guide cell fate specification. Building on our previous work, in this report we investigated the hypothesis that scaffold pore curvature, the direct consequence of pore size, modulates the differentiation trajectory of mesenchymal stem cells (MSCs) through alterations in the cytoskeleton. First, we demonstrated that sufficiently small pores facilitate cell clustering in subcutaneous explants cultured in vivo, which we previously reported to demonstrate stem tissue phenotype both in vivo and in vitro. Based on this observation, we cultured cell-scaffold constructs in vitro to assess early time point interactions between cells and the matrix as a function of pore size. We demonstrate that principle curvature directly influences nuclear aspect and cell aggregation in vitro. Scaffold pores with a sufficiently low degree of principle curvature enables cell differentiation; pharmacologic inhibition of actin cytoskeleton polymerization in these scaffolds decreased differentiation, indicating a critical role of the cytoskeleton in transducing cues from the scaffold pore microenvironment to the cell nucleus. We fabricated a macropore model, which allows for three-dimensional confocal imaging and demonstrates that a higher principle curvature facilitates cell aggregation and the formation of a potentially protective niche within scaffold macropores which prevents MSC differentiation and retains their stemness. Sufficiently high principle curvature upregulates yes-associated protein (YAP) phosphorylation while decreased principle curvature downregulates YAP phosphorylation and increases YAP nuclear translocation with subsequent transcriptional activation towards an osteogenic differentiation fate. Finally, we demonstrate that the inhibition of the YAP/TAZ pathway causes a defect in differentiation, while YAP/TAZ activation causes premature differentiation in a curvature-dependent way when modulated by verteporfin (VP) and 1-oleyl-lysophosphatidic acid (LPA), respectively, confirming the critical role of biomaterials-mediated YAP/TAZ signaling in cell differentiation and fate specification. Our data support that the principle curvature of scaffold macropores is a critical design criterion which guides the differentiation trajectory of mesenchymal stem cells’ scaffolds. Biomaterial-mediated regulation of YAP/TAZ may significantly contribute to influencing the regenerative outcomes of biomaterials-based tissue engineering strategies through their specific pore design.https://www.mdpi.com/1422-0067/23/9/4499tissue engineeringscaffoldsregenerative medicinemechanotransductionmesenchymal stem cell |
| spellingShingle | W. Benton Swanson Maiko Omi Seth M. Woodbury Lindsey M. Douglas Miranda Eberle Peter X. Ma Nan E. Hatch Yuji Mishina Scaffold Pore Curvature Influences ΜSC Fate through Differential Cellular Organization and YAP/TAZ Activity International Journal of Molecular Sciences tissue engineering scaffolds regenerative medicine mechanotransduction mesenchymal stem cell |
| title | Scaffold Pore Curvature Influences ΜSC Fate through Differential Cellular Organization and YAP/TAZ Activity |
| title_full | Scaffold Pore Curvature Influences ΜSC Fate through Differential Cellular Organization and YAP/TAZ Activity |
| title_fullStr | Scaffold Pore Curvature Influences ΜSC Fate through Differential Cellular Organization and YAP/TAZ Activity |
| title_full_unstemmed | Scaffold Pore Curvature Influences ΜSC Fate through Differential Cellular Organization and YAP/TAZ Activity |
| title_short | Scaffold Pore Curvature Influences ΜSC Fate through Differential Cellular Organization and YAP/TAZ Activity |
| title_sort | scaffold pore curvature influences μsc fate through differential cellular organization and yap taz activity |
| topic | tissue engineering scaffolds regenerative medicine mechanotransduction mesenchymal stem cell |
| url | https://www.mdpi.com/1422-0067/23/9/4499 |
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