1
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Velankar K, Liu W, Hartmeier PR, Veleke SR, Reddy GA, Clegg B, Gawalt ES, Fan Y, Meng WS. Fibril-Guided Three-Dimensional Assembly of Human Fibroblastic Reticular Cells. ACS APPLIED BIO MATERIALS 2024; 7:3953-3963. [PMID: 38805413 PMCID: PMC11190984 DOI: 10.1021/acsabm.4c00331] [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: 03/07/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 05/30/2024]
Abstract
Fibroblastic reticular cells (FRCs) are stromal cells (SCs) that can be isolated from lymph node (LN) biopsies. Studies have shown that these nonhematopoietic cells have the capacity to shape and regulate adaptive immunity and can become a form of personalized cell therapy. Successful translational efforts, however, require the cells to be formulated as injectable units, with their native architecture preserved. The intrinsic reticular organization of FRCs, however, is lost in the monolayer cultures. Organizing FRCs into three-dimensional (3D) clusters would recapitulate their structural and functional attributes. Herein, we report a scaffolding method based on the self-assembling peptide (SAP) EAKII biotinylated at the N-terminus (EAKbt). Cross-linking with avidin transformed the EAKbt fibrils into a dense network of coacervates. The combined forces of fibrillization and bioaffinity interactions in the cross-linked EAKbt likely drove the cells into a cohesive 3D reticula. This facile method of generating clustered FRCs (clFRCs) can be completed within 10 days. In vitro clFRCs attracted the infiltration of T cells and rendered an immunosuppressive milieu in the cocultures. These results demonstrate the potential of clFRCs as a method for stromal cell delivery.
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Affiliation(s)
- Ketki
Y. Velankar
- Graduate
School of Pharmaceutical Sciences, Duquesne
University, Pittsburgh Pennsylvania 15282, United States
| | - Wen Liu
- Allegheny
Health Network Cancer Institute, Allegheny Health Network, Pittsburgh Pennsylvania 15212, United States
| | - Paul R. Hartmeier
- Graduate
School of Pharmaceutical Sciences, Duquesne
University, Pittsburgh Pennsylvania 15282, United States
| | - Samuel R. Veleke
- Graduate
School of Pharmaceutical Sciences, Duquesne
University, Pittsburgh Pennsylvania 15282, United States
| | - Gayathri Aparnasai Reddy
- Graduate
School of Pharmaceutical Sciences, Duquesne
University, Pittsburgh Pennsylvania 15282, United States
| | - Benjamin Clegg
- Department
of Chemistry and Biochemistry, Duquesne
University, Pittsburgh, Pennsylvania 15282, United States
| | - Ellen S. Gawalt
- Department
of Chemistry and Biochemistry, Duquesne
University, Pittsburgh, Pennsylvania 15282, United States
- McGowan
Institute for Regenerative Medicine, University
of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Yong Fan
- Allegheny
Health Network Cancer Institute, Allegheny Health Network, Pittsburgh Pennsylvania 15212, United States
- Department
of Biomedical Engineering, Carnegie Mellon
University, Pittsburgh,Pennsylvania 15213, United States
| | - Wilson S. Meng
- Graduate
School of Pharmaceutical Sciences, Duquesne
University, Pittsburgh Pennsylvania 15282, United States
- McGowan
Institute for Regenerative Medicine, University
of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
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2
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Huang X, Sui B, Liu A, Guo H, Zheng C, Liu P, Cai X, Fu F, Bai S, Jin F, Chen J, Wei C, Jin Y, Xuan K. Odontogenesis-Empowered Extracellular Vesicles Safeguard Donor-Recipient Stem Cell Interplay to Support Tooth Regeneration. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400260. [PMID: 38860737 DOI: 10.1002/smll.202400260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 06/02/2024] [Indexed: 06/12/2024]
Abstract
Harnessing the developmental events of mesenchymal condensation to direct postnatal dental stem cell aggregation represents a cutting-edge and promising approach to tooth regeneration. Tooth avulsion is among the most prevalent and serious dental injuries, and odontogenic aggregates assembled by stem cells from human exfoliated deciduous teeth (SHED) have proven effective in revitalizing avulsed teeth after replantation in the clinical trial. However, whether and how SHED aggregates (SA) communicate with recipient components and promote synergistic tissue regeneration to support replanted teeth remains elusive. Here, it is shown that SA-mediated avulsed tooth regeneration involves periodontal restoration and recovery of recipient Gli1+ stem cells, which are mobilized and necessarily contribute to the reestablishment of the tooth-periodontal ligament-bone interface. Mechanistically, the release of extracellular vesicles (EVs) is revealed indispensable for the implanted SA to mobilize recipient Gli1+ cells and regenerate avulsed teeth. Furthermore, SHED aggregates-released EVs (SA-EVs) are featured with odontogenic properties linked to tissue regeneration, which enhance migration, proliferation, and differentiation of Gli1+ cells. Importantly, local application of SA-EVs per se empowers recipient Gli1+ cells and safeguards regeneration of avulsed teeth. Collectively, the findings establish a paradigm in which odontogenesis-featured EVs govern donor-recipient stem cell interplay to achieve tooth regeneration, inspiring cell-free translational regenerative strategies.
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Affiliation(s)
- Xiaoyao Huang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Disease, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Disease, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Bingdong Sui
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Disease, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Anqi Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Disease, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
- Department of Stomatology, 985 Hospital of Joint Logistics Support Force, Taiyuan, 030000, China
| | - Hao Guo
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Disease, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Chenxi Zheng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Disease, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Peisheng Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Disease, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Disease, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Xinyue Cai
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Disease, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Disease, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Fei Fu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Disease, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Disease, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Shengfeng Bai
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Disease, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Fang Jin
- Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Ji Chen
- Department of Oral Implantology, School of Stomatology, The Fourth Military Medical University Xi'an, Shaanxi, 710032, China
| | - Changze Wei
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Yan Jin
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Disease, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, 710032, China
| | - Kun Xuan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Disease, Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
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3
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Scognamiglio F, Pizzolitto C, Romano M, Teti G, Zara S, Conz M, Donati I, Porrelli D, Falconi M, Marsich E. "A lactose-modified chitosan accelerates chondrogenic differentiation in mesenchymal stem cells spheroids". BIOMATERIALS ADVANCES 2024; 160:213849. [PMID: 38599041 DOI: 10.1016/j.bioadv.2024.213849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 04/12/2024]
Abstract
Spheroids derived from human mesenchymal stem cells (hMSCs) are of limited use for cartilage regeneration, as the viability of the cells progressively decreases during the period required for chondrogenic differentiation (21 days). In this work, spheroids based on hMSCs and a lactose-modified chitosan (CTL) were formed by seeding cells onto an air-dried coating of CTL. The polymer coating can inhibit cell adhesion and it is simultaneously incorporated into spheroid structure. CTL-spheroids were characterized from a morphological and biological perspective, and their properties were compared with those of spheroids obtained by seeding the cells onto a non-adherent surface (agar gel). Compared to the latter, smaller and more viable spheroids form in the presence of CTL as early as 4 days of culture. At this time point, analysis of stem cells differentiation in spheroids showed a remarkable increase in collagen type-2 (COL2A1) gene expression (~700-fold compared to day 0), whereas only a 2-fold increase was observed in the control spheroids at day 21. These results were confirmed by histological and transmission electron microscopy (TEM) analyses, which showed that in CTL-spheroids an early deposition of collagen with a banding structure already occurred at day 7. Overall, these results support the use of CTL-spheroids as a novel system for cartilage regeneration, characterized by increased cell viability and differentiation capacity within a short time-frame. This will pave the way for approaches aimed at increasing the success rate of procedures and reducing the time required for tissue regeneration.
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Affiliation(s)
- F Scognamiglio
- Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, 34127 Trieste, Italy.
| | - C Pizzolitto
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Piazza dell'Ospitale 1, 34129 Trieste, Italy.
| | - M Romano
- Department of Life Sciences, University of Trieste, Via Valerio 28, 34127 Trieste, Italy.
| | - G Teti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy.
| | - S Zara
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy.
| | - M Conz
- Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, 34127 Trieste, Italy.
| | - I Donati
- Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, 34127 Trieste, Italy.
| | - D Porrelli
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Piazza dell'Ospitale 1, 34129 Trieste, Italy.
| | - M Falconi
- Department of Medical and Surgical Sciences, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy.
| | - E Marsich
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Piazza dell'Ospitale 1, 34129 Trieste, Italy.
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4
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Marozin S, Simon-Nobbe B, Huth A, Beyerer E, Weber L, Nüssler A, Lepperdinger G. Aggregation of human osteoblasts unlocks self-reliant differentiation and constitutes a microenvironment for 3D-co-cultivation with other bone marrow cells. Sci Rep 2024; 14:10345. [PMID: 38710795 DOI: 10.1038/s41598-024-60986-8] [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: 01/15/2024] [Accepted: 04/29/2024] [Indexed: 05/08/2024] Open
Abstract
Skeletal bone function relies on both cells and cellular niches, which, when combined, provide guiding cues for the control of differentiation and remodeling processes. Here, we propose an in vitro 3D model based on human fetal osteoblasts, which eases the study of osteocyte commitment in vitro and thus provides a means to examine the influences of biomaterials, substances or cells on the regulation of these processes. Aggregates were formed from human fetal osteoblasts (hFOB1.19) and cultivated under proliferative, adipo- and osteoinductive conditions. When cultivated under osteoinductive conditions, the vitality of the aggregates was compromised, the expression levels of the mineralization-related gene DMP1 and the amount of calcification and matrix deposition were lower, and the growth of the spheroids stalled. However, within spheres under growth conditions without specific supplements, self-organization processes occur, which promote extracellular calcium deposition, and osteocyte-like cells develop. Long-term cultivated hFOB aggregates were free of necrotic areas. Moreover, hFOB aggregates cultivated under standard proliferative conditions supported the co-cultivation of human monocytes, microvascular endothelial cells and stromal cells. Overall, the model presented here comprises a self-organizing and easily accessible 3D osteoblast model for studying bone marrow formation and in vitro remodeling and thus provides a means to test druggable molecular pathways with the potential to promote life-long bone formation and remodeling.
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Affiliation(s)
- Sabrina Marozin
- Department of Biosciences and Medical Biology, University Salzburg, 5020, Salzburg, Austria.
| | - Birgit Simon-Nobbe
- Department of Biosciences and Medical Biology, University Salzburg, 5020, Salzburg, Austria
| | - Astrid Huth
- Department of Biosciences and Medical Biology, University Salzburg, 5020, Salzburg, Austria
| | - Evelyn Beyerer
- Department of Biosciences and Medical Biology, University Salzburg, 5020, Salzburg, Austria
| | - Laurenz Weber
- Department of Biosciences and Medical Biology, University Salzburg, 5020, Salzburg, Austria
| | - Andreas Nüssler
- Siegfried Weller Institut (SWI) | BG Klinik Tübingen, Tübingen, Germany
| | - Günter Lepperdinger
- Department of Biosciences and Medical Biology, University Salzburg, 5020, Salzburg, Austria
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5
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Di Caprio N, Davidson MD, Daly AC, Burdick JA. Injectable MSC Spheroid and Microgel Granular Composites for Engineering Tissue. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312226. [PMID: 38178647 PMCID: PMC10994732 DOI: 10.1002/adma.202312226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/20/2023] [Indexed: 01/06/2024]
Abstract
Many cell types require direct cell-cell interactions for differentiation and function; yet, this can be challenging to incorporate into 3-dimensional (3D) structures for the engineering of tissues. Here, a new approach is introduced that combines aggregates of cells (spheroids) with similarly-sized hydrogel particles (microgels) to form granular composites that are injectable, undergo interparticle crosslinking via light for initial stabilization, permit cell-cell contacts for cell signaling, and allow spheroid fusion and growth. One area where this is important is in cartilage tissue engineering, as cell-cell contacts are crucial to chondrogenesis and are missing in many tissue engineering approaches. To address this, granular composites are developed from adult porcine mesenchymal stromal cell (MSC) spheroids and hyaluronic acid microgels and simulations and experimental analyses are used to establish the importance of initial MSC spheroid to microgel volume ratios to balance mechanical support with tissue growth. Long-term chondrogenic cultures of granular composites produce engineered cartilage tissue with extensive matrix deposition and mechanical properties within the range of cartilage, as well as integration with native tissue. Altogether, a new strategy of injectable granular composites is developed that leverages the benefits of cell-cell interactions through spheroids with the mechanical stabilization afforded with engineered hydrogels.
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Affiliation(s)
- Nikolas Di Caprio
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Matthew D. Davidson
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Andrew C. Daly
- Biomedical Engineering, University of Galway, Galway, Ireland
- CURAM, SFI Research Centre for Medical Devices, University of Galway, Galway, Ireland
| | - Jason A. Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO 80303, USA
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80303, USA
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6
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Buckenmeyer MJ, Brooks EA, Taylor MS, Yang L, Holewinski RJ, Meyer TJ, Galloux M, Garmendia-Cedillos M, Pohida TJ, Andresson T, Croix B, Wolf MT. Engineering Tumor Stroma Morphogenesis Using Dynamic Cell-Matrix Spheroid Assembly. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.19.585805. [PMID: 38903106 PMCID: PMC11188064 DOI: 10.1101/2024.03.19.585805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
The tumor microenvironment consists of resident tumor cells organized within a compositionally diverse, three-dimensional (3D) extracellular matrix (ECM) network that cannot be replicated in vitro using bottom-up synthesis. We report a new self-assembly system to engineer ECM-rich 3D MatriSpheres wherein tumor cells actively organize and concentrate microgram quantities of decellularized ECM dispersions which modulate cell phenotype. 3D colorectal cancer (CRC) MatriSpheres were created using decellularized small intestine submucosa (SIS) as an orthotopic ECM source that had greater proteomic homology to CRC tumor ECM than traditional ECM formulations such as Matrigel. SIS ECM was rapidly concentrated from its environment and assembled into ECM-rich 3D stroma-like regions by mouse and human CRC cell lines within 4-5 days via a mechanism that was rheologically distinct from bulk hydrogel formation. Both ECM organization and transcriptional regulation by 3D ECM cues affected programs of malignancy, lipid metabolism, and immunoregulation that corresponded with an in vivo MC38 tumor cell subpopulation identified via single cell RNA sequencing. This 3D modeling approach stimulates tumor specific tissue morphogenesis that incorporates the complexities of both cancer cell and ECM compartments in a scalable, spontaneous assembly process that may further facilitate precision medicine.
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Affiliation(s)
- Michael J. Buckenmeyer
- Cancer Biomaterials Engineering Laboratory, Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Elizabeth A. Brooks
- Cancer Biomaterials Engineering Laboratory, Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Madison S. Taylor
- Cancer Biomaterials Engineering Laboratory, Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Liping Yang
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Ronald J. Holewinski
- Protein Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD, 21701, USA
| | - Thomas J. Meyer
- CCR Collaborative Bioinformatics Resource, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Mélissa Galloux
- Independent Bioinformatician, Marseille, Provence-Alpes-Côte d’Azur, France
| | - Marcial Garmendia-Cedillos
- Instrumentation Development and Engineering Application Solutions, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Thomas J. Pohida
- Instrumentation Development and Engineering Application Solutions, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Thorkell Andresson
- Protein Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD, 21701, USA
| | - Brad Croix
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
| | - Matthew T. Wolf
- Cancer Biomaterials Engineering Laboratory, Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, 21702, USA
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7
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Thai VL, Mierswa S, Griffin KH, Boerckel JD, Leach JK. Mechanoregulation of MSC spheroid immunomodulation. APL Bioeng 2024; 8:016116. [PMID: 38435468 PMCID: PMC10908560 DOI: 10.1063/5.0184431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 02/12/2024] [Indexed: 03/05/2024] Open
Abstract
Mesenchymal stromal cells (MSCs) are widely used in cell-based therapies and tissue regeneration for their potent secretome, which promotes host cell recruitment and modulates inflammation. Compared to monodisperse cells, MSC spheroids exhibit improved viability and increased secretion of immunomodulatory cytokines. While mechanical stimulation of monodisperse cells can increase cytokine production, the influence of mechanical loading on MSC spheroids is unknown. Here, we evaluated the effect of controlled, uniaxial cyclic compression on the secretion of immunomodulatory cytokines by human MSC spheroids and tested the influence of load-induced gene expression on MSC mechanoresponsiveness. We exposed MSC spheroids, entrapped in alginate hydrogels, to three cyclic compressive regimes with varying stress (L) magnitudes (i.e., 5 and 10 kPa) and hold (H) durations (i.e., 30 and 250 s) L5H30, L10H30, and L10H250. We observed changes in cytokine and chemokine expression dependent on the loading regime, where higher stress regimes tended to result in more exaggerated changes. However, only MSC spheroids exposed to L10H30 induced human THP-1 macrophage polarization toward an M2 phenotype compared to static conditions. Static and L10H30 loading facilitated a strong, interlinked F-actin arrangement, while L5H30 and L10H250 disrupted the structure of actin filaments. This was further examined when the actin cytoskeleton was disrupted via Y-27632. We observed downregulation of YAP-related genes, and the levels of secreted inflammatory cytokines were globally decreased. These findings emphasize the essential role of mechanosignaling in mediating the immunomodulatory potential of MSC spheroids.
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Affiliation(s)
| | | | | | - Joel D. Boerckel
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA
| | - J. Kent Leach
- Author to whom correspondence should be addressed:. Tel.: +1 916 734 8965
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8
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Johnson N, Filler AC, Sethi A, Smith LR, Leach JK. Skeletal Muscle Spheroids as Building Blocks for Engineered Muscle Tissue. ACS Biomater Sci Eng 2024; 10:497-506. [PMID: 38113146 PMCID: PMC10777344 DOI: 10.1021/acsbiomaterials.3c01078] [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: 08/03/2023] [Revised: 12/04/2023] [Accepted: 12/05/2023] [Indexed: 12/21/2023]
Abstract
Spheroids exhibit enhanced cell-cell interactions that facilitate improved survival and mimic the physiological cellular environment in vivo. Cell spheroids have been successfully used as building blocks for engineered tissues, yet the viability of this approach with skeletal muscle spheroids is poorly understood, particularly when incorporated into three-dimensional (3D) constructs. Bioprinting is a promising strategy to recapitulate the hierarchical organization of native tissue that is fundamental to its function. However, the influence of bioprinting on skeletal muscle cell spheroids and their function are yet to be interrogated. Using C2C12 mouse myoblasts and primary bovine muscle stem cells (MuSCs), we characterized spheroid formation as a function of duration and cell seeding density. We then investigated the potential of skeletal muscle spheroids entrapped in alginate bioink as tissue building blocks for bioprinting myogenic tissue. Both C2C12 and primary bovine MuSCs formed spheroids of similar sizes and remained viable after bioprinting. Spheroids of both cell types fused into larger tissue clusters over time within alginate and exhibited tissue formation comparable to monodisperse cells. Compared to monodisperse cells in alginate gels, C2C12 spheroids exhibited greater MyHC expression after 2 weeks, while cells within bovine MuSC spheroids displayed increased cell spreading. Both monodisperse and MuSC spheroids exhibited increased expression of genes denoting mid- and late-stage myogenic differentiation. Together, these data suggest that skeletal muscle spheroids have the potential for generating myogenic tissue via 3D bioprinting and reveal areas of research that could enhance myogenesis and myogenic differentiation in future studies.
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Affiliation(s)
- Nicholas Johnson
- Department
of Orthopaedic Surgery, UC Davis Health, Sacramento, California 95817, United States
- Department
of Biomedical Engineering, UC Davis, Davis, California 95616, United States
| | - Andrea C. Filler
- Department
of Orthopaedic Surgery, UC Davis Health, Sacramento, California 95817, United States
- Department
of Biomedical Engineering, UC Davis, Davis, California 95616, United States
| | - Akash Sethi
- Department
of Molecular and Cellular Biology, UC Davis, Davis, California 95616, United States
| | - Lucas R. Smith
- Department
of Neurobiology, Physiology and Behavior, UC Davis, Davis, California 95616, United States
| | - J. Kent Leach
- Department
of Orthopaedic Surgery, UC Davis Health, Sacramento, California 95817, United States
- Department
of Biomedical Engineering, UC Davis, Davis, California 95616, United States
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9
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Coutts CW, Baldwin AM, Jebeli M, Jolin GE, Mungai RW, Billiar KL. The Role of Apoptosis and Oxidative Stress in a Cell Spheroid Model of Calcific Aortic Valve Disease. Cells 2023; 13:45. [PMID: 38201249 PMCID: PMC10778193 DOI: 10.3390/cells13010045] [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: 11/16/2023] [Revised: 12/09/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Calcific aortic valve disease (CAVD) is the most common heart valve disease among aging populations. There are two reported pathways of CAVD: osteogenic and dystrophic, the latter being more prevalent. Current two-dimensional (2D) in vitro CAVD models have shed light on the disease but lack three-dimensional (3D) cell-ECM interactions, and current 3D models require osteogenic media to induce calcification. The goal of this work is to develop a 3D dystrophic calcification model. We hypothesize that, as with 2D cell-based CAVD models, programmed cell death (apoptosis) is integral to calcification. We model the cell aggregation observed in CAVD by creating porcine valvular interstitial cell spheroids in agarose microwells. Upon culture in complete growth media (DMEM with serum), calcium nodules form in the spheroids within a few days. Inhibiting apoptosis with Z-VAD significantly reduced calcification, indicating that the calcification observed in this model is dystrophic rather than osteogenic. To determine the relative roles of oxidative stress and extracellular matrix (ECM) production in the induction of apoptosis and subsequent calcification, the media was supplemented with antioxidants with differing effects on ECM formation (ascorbic acid (AA), Trolox, or Methionine). All three antioxidants significantly reduced calcification as measured by Von Kossa staining, with the percentages of calcification per area of AA, Trolox, Methionine, and the non-antioxidant-treated control on day 7 equaling 0.17%, 2.5%, 6.0%, and 7.7%, respectively. As ZVAD and AA almost entirely inhibit calcification, apoptosis does not appear to be caused by a lack of diffusion of oxygen and metabolites within the small spheroids. Further, the observation that AA treatment reduces calcification significantly more than the other antioxidants indicates that the ECM stimulatory effect of AA plays a role inhibiting apoptosis and calcification in the spheroids. We conclude that, in this 3D in vitro model, both oxidative stress and ECM production play crucial roles in dystrophic calcification and may be viable therapeutic targets for preventing CAVD.
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Affiliation(s)
| | | | | | | | | | - Kristen L. Billiar
- Biomedical Engineering Department, Worcester Polytechnic Institute, Worcester, MA 01609, USA (G.E.J.)
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10
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Casella A, Lowen J, Griffin KH, Shimamoto N, Ramos-Rodriguez DH, Panitch A, Leach JK. Conductive Microgel Annealed Scaffolds Enhance Myogenic Potential of Myoblastic Cells. Adv Healthc Mater 2023:e2302500. [PMID: 38069833 DOI: 10.1002/adhm.202302500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/15/2023] [Indexed: 12/19/2023]
Abstract
Conductive biomaterials may capture native or exogenous bioelectric signaling, but incorporation of conductive moieties is limited by cytotoxicity, poor injectability, or insufficient stimulation. Microgel annealed scaffolds are promising as hydrogel-based materials due to their inherent void space that facilitates cell migration and proliferation better than nanoporous bulk hydrogels. Conductive microgels are generated from poly(ethylene) glycol (PEG and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS) to explore the interplay of void volume and conductivity on myogenic differentiation. PEDOT: PSS increases microgel conductivity two-fold while maintaining stiffness, annealing strength, and viability of associated myoblastic cells. C2C12 myoblasts exhibit increases in the late-stage differentiation marker myosin heavy chain as a function of both porosity and conductivity. Myogenin, an earlier marker, is influenced only by porosity. Human skeletal muscle-derived cells exhibit increased Myod1, insulin like growth factor-1, and insulin-like growth factor binding protein 2 at earlier time points on conductive microgel scaffolds compared to non-conductive scaffolds. They also secrete more vascular endothelial growth factor at early time points and express factors that led to macrophage polarization patterns observe during muscle repair. These data indicate that conductivity aids myogenic differentiation of myogenic cell lines and primary cells, motivating the need for future translational studies to promote muscle repair.
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Affiliation(s)
- Alena Casella
- Department of Biomedical Engineering, University of California Davis, Davis, CA, 95616, USA
- Department of Orthopaedic Surgery, School of Medicine, UC Davis Health, Sacramento, CA, 95817, USA
| | - Jeremy Lowen
- Department of Biomedical Engineering, University of California Davis, Davis, CA, 95616, USA
- Department of Orthopaedic Surgery, School of Medicine, UC Davis Health, Sacramento, CA, 95817, USA
| | - Katherine H Griffin
- Department of Orthopaedic Surgery, School of Medicine, UC Davis Health, Sacramento, CA, 95817, USA
- School of Veterinary Medicine, University of California Davis, Davis, CA, 95616, USA
| | - Nathan Shimamoto
- Department of Biomedical Engineering, University of California Davis, Davis, CA, 95616, USA
- Department of Orthopaedic Surgery, School of Medicine, UC Davis Health, Sacramento, CA, 95817, USA
| | - David H Ramos-Rodriguez
- Department of Orthopaedic Surgery, School of Medicine, UC Davis Health, Sacramento, CA, 95817, USA
| | - Alyssa Panitch
- Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Department of Biomedical Engineering, Emory University, Atlanta, GA, 30322, USA
| | - J Kent Leach
- Department of Biomedical Engineering, University of California Davis, Davis, CA, 95616, USA
- Department of Orthopaedic Surgery, School of Medicine, UC Davis Health, Sacramento, CA, 95817, USA
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11
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Yuan W, Ferreira LDAQ, Yu B, Ansari S, Moshaverinia A. Dental-derived stem cells in tissue engineering: the role of biomaterials and host response. Regen Biomater 2023; 11:rbad100. [PMID: 38223292 PMCID: PMC10786679 DOI: 10.1093/rb/rbad100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/31/2023] [Accepted: 11/07/2023] [Indexed: 01/16/2024] Open
Abstract
Dental-derived stem cells (DSCs) are attractive cell sources due to their easy access, superior growth capacity and low immunogenicity. They can respond to multiple extracellular matrix signals, which provide biophysical and biochemical cues to regulate the fate of residing cells. However, the direct transplantation of DSCs suffers from poor proliferation and differentiation toward functional cells and low survival rates due to local inflammation. Recently, elegant advances in the design of novel biomaterials have been made to give promise to the use of biomimetic biomaterials to regulate various cell behaviors, including proliferation, differentiation and migration. Biomaterials could be tailored with multiple functionalities, e.g., stimuli-responsiveness. There is an emerging need to summarize recent advances in engineered biomaterials-mediated delivery and therapy of DSCs and their potential applications. Herein, we outlined the design of biomaterials for supporting DSCs and the host response to the transplantation.
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Affiliation(s)
- Weihao Yuan
- Weintraub Center for Reconstructive Biotechnology, Section of Prosthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Luiza de Almeida Queiroz Ferreira
- Weintraub Center for Reconstructive Biotechnology, Section of Prosthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Bo Yu
- Section of Restorative Dentistry, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Sahar Ansari
- Weintraub Center for Reconstructive Biotechnology, Section of Prosthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alireza Moshaverinia
- Weintraub Center for Reconstructive Biotechnology, Section of Prosthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Bioengineering, Henry Samueli School of Engineering and Applied Sciences, University of California, Los Angeles, Los Angeles, CA 90095, USA
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12
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Jeyachandran D, Murshed M, Haglund L, Cerruti M. A Bioglass-Poly(lactic-co-glycolic Acid) Scaffold@Fibrin Hydrogel Construct to Support Endochondral Bone Formation. Adv Healthc Mater 2023; 12:e2300211. [PMID: 37462089 DOI: 10.1002/adhm.202300211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 06/21/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023]
Abstract
Bone tissue engineering using stem cells to build bone directly on a scaffold matrix often fails due to lack of oxygen at the injury site. This may be avoided by following the endochondral ossification route; herein, a cartilage template is promoted first, which can survive hypoxic environments, followed by its hypertrophy and ossification. However, hypertrophy is so far only achieved using biological factors. This work introduces a Bioglass-Poly(lactic-co-glycolic acid@fibrin (Bg-PLGA@fibrin) construct where a fibrin hydrogel infiltrates and encapsulates a porous Bg-PLGA. The hypothesis is that mesenchymal stem cells (MSCs) loaded in the fibrin gel and induced into chondrogenesis degrade the gel and become hypertrophic upon reaching the stiffer, bioactive Bg-PLGA core, without external induction factors. Results show that Bg-PLGA@fibrin induces hypertrophy, as well as matrix mineralization and osteogenesis; it also promotes a change in morphology of the MSCs at the gel/scaffold interface, possibly a sign of osteoblast-like differentiation of hypertrophic chondrocytes. Thus, the Bg-PLGA@fibrin construct can sequentially support the different phases of endochondral ossification purely based on material cues. This may facilitate clinical translation by decreasing in-vitro cell culture time pre-implantation and the complexity associated with the use of external induction factors.
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Affiliation(s)
| | - Monzur Murshed
- Faculty of Dentistry, Department of Medicine, and Shriners Hospital for Children, McGill University, Montreal, Quebec, H4A 0A9, Canada
| | - Lisbet Haglund
- Experimental Surgery, McGill University, Montreal, H3G 2M1, Canada
| | - Marta Cerruti
- Department of Mining and Materials Engineering, McGill University, Montreal, H3A 0C1, Canada
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13
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Ramos-Rodriguez DH, Leach JK. Biomaterials are the key to unlock spheroid function and therapeutic potential. BIOMATERIALS AND BIOSYSTEMS 2023; 11:100080. [PMID: 37720486 PMCID: PMC10499638 DOI: 10.1016/j.bbiosy.2023.100080] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/09/2023] [Accepted: 06/03/2023] [Indexed: 09/19/2023] Open
Abstract
Spheroids are three-dimensional cell aggregates that mimic fundamental aspects of the native tissue microenvironment better than single cells, making them a promising platform for the study of tissue development and therapeutics. Spheroids have been investigated for decades as models in cancer research, yet we have only just scratched the surface of their potential clinical utility in cell-based therapies. Like many cells, spheroids commonly exhibit a loss of key attributes upon implantation, motivating the need for strategies to regulate their function in situ. Biomaterials offer numerous opportunities to preserve spheroid function and guide spheroid behavior by tailoring the local microenvironment.
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Affiliation(s)
| | - J. Kent Leach
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817, USA
- Department of Biomedical Engineering, University of California, Davis, Davis, CA 95616, USA
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14
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Sapkota T, Shrestha BK, Shrestha S, Bhattarai N. Chitin Nanofibrils Enabled Core-Shell Microcapsules of Alginate Hydrogel. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2470. [PMID: 37686978 PMCID: PMC10489914 DOI: 10.3390/nano13172470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023]
Abstract
An engineered 3D architectural network of the biopolymeric hydrogel can mimic the native cell environment that promotes cell infiltration and growth. Among several bio-fabricated hydrogel structures, core-shell microcapsules inherit the potential of cell encapsulation to ensure the growth and transport of cells and cell metabolites. Herein, a co-axial electrostatic encapsulation strategy is used to create and encapsulate the cells into chitin nanofibrils integrated alginate hydrogel microcapsules. Three parameters that are critical in the electrostatic encapsulation process, hydrogel composition, flow rate, and voltage were optimized. The physicochemical characterization including structure, size, and stability of the core-shell microcapsules was analyzed by scanning electron microscope (SEM), FTIR, and mechanical tests. The cellular responses of the core-shell microcapsules were evaluated through in vitro cell studies by encapsulating NIH/3T3 fibroblast cells. Notably, the bioactive microcapsule showed that the cell viability was found excellent for more than 2 weeks. Thus, the results of this core-shell microcapsule showed a promising approach to creating 3D hydrogel networks suitable for different biomedical applications such as in vitro tissue models for toxicity studies, wound healing, and tissue repair.
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Affiliation(s)
- Thakur Sapkota
- Department of Chemical, Biological, and Bioengineering, North Carolina A&T State University, Greensboro, NC 27411, USA; (T.S.); (B.K.S.); (S.S.)
- Department of Applied Science and Technology, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Bishnu Kumar Shrestha
- Department of Chemical, Biological, and Bioengineering, North Carolina A&T State University, Greensboro, NC 27411, USA; (T.S.); (B.K.S.); (S.S.)
| | - Sita Shrestha
- Department of Chemical, Biological, and Bioengineering, North Carolina A&T State University, Greensboro, NC 27411, USA; (T.S.); (B.K.S.); (S.S.)
| | - Narayan Bhattarai
- Department of Chemical, Biological, and Bioengineering, North Carolina A&T State University, Greensboro, NC 27411, USA; (T.S.); (B.K.S.); (S.S.)
- Department of Applied Science and Technology, North Carolina A&T State University, Greensboro, NC 27411, USA
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15
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Casella A, Lowen J, Shimamoto N, Griffin KH, Filler AC, Panitch A, Leach JK. Conductive microgel annealed scaffolds enhance myogenic potential of myoblastic cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.01.551533. [PMID: 37577583 PMCID: PMC10418230 DOI: 10.1101/2023.08.01.551533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Bioelectricity is an understudied phenomenon to guide tissue homeostasis and regeneration. Conductive biomaterials may capture native or exogenous bioelectric signaling, but incorporation of conductive moieties is limited by cytotoxicity, poor injectability, or insufficient stimulation. Microgel annealed scaffolds are promising as hydrogel-based materials due to their inherent void space that facilitates cell migration and proliferation better than nanoporous bulk hydrogels. We generated conductive microgels from poly(ethylene) glycol and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) to explore the interplay of void volume and conductivity on myogenic differentiation. PEDOT:PSS increased microgel conductivity over 2-fold while maintaining stiffness, annealing strength, and viability of associated myoblastic cells. C2C12 myoblasts exhibited increases in the late-stage differentiation marker myosin heavy chain as a function of both porosity and conductivity. Myogenin, an earlier marker, was influenced only by porosity. Human skeletal muscle derived cells exhibited increased Myod1 , IGF-1, and IGFBP-2 at earlier timepoints on conductive microgel scaffolds compared to non-conductive scaffolds. They also secreted higher levels of VEGF at early timepoints and expressed factors that led to macrophage polarization patterns observed during muscle repair. These data indicate that conductivity aids myogenic differentiation of myogenic cell lines and primary cells, motivating the need for future translational studies to promote muscle repair.
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16
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Thai VL, Candelas DO, Leach JK. Tuning the Microenvironment to Create Functionally Distinct Mesenchymal Stromal Cell Spheroids. Ann Biomed Eng 2023; 51:1558-1573. [PMID: 36809393 PMCID: PMC10264490 DOI: 10.1007/s10439-023-03162-9] [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: 11/08/2022] [Accepted: 02/06/2023] [Indexed: 02/23/2023]
Abstract
Mesenchymal stromal cells (MSCs) are under investigation for wound healing and tissue regeneration due to their potent secretome. Compared to monodisperse cells, MSC spheroids exhibit increased cell survival and enhanced secretion of endogenous factors such as vascular endothelial growth factor (VEGF) and prostaglandin E2 (PGE2), two key factors in wound repair. We previously upregulated the proangiogenic potential of homotypic MSC spheroids by manipulating microenvironmental culture conditions. However, this approach depends on the responsiveness of host endothelial cells (ECs)-a limitation when attempting to restore large tissue deficits and for patients with chronic wounds in which ECs are dysfunctional and unresponsive. To address this challenge, we used a Design of Experiments (DOE) approach to engineer functionally distinct MSC spheroids that maximize VEGF production (VEGFMAX) or PGE2 production (PGE2,MAX) while incorporating ECs that could serve as the basic building blocks for vessel formation. VEGFMAX produced 22.7-fold more VEGF with enhanced endothelial cell migration compared to PGE2,MAX, while PGE2,MAX produced 16.7-fold more PGE2 with accelerated keratinocyte migration compared to VEGFMAX. When encapsulated together in engineered protease-degradable hydrogels as a model of cell delivery, VEGFMAX and PGE2,MAX spheroids exhibited robust spreading into the biomaterial and enhanced metabolic activity. The distinct bioactivities of these MSC spheroids demonstrate the highly tunable nature of spheroids and provide a new approach to leverage the therapeutic potential of cell-based therapies.
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Affiliation(s)
- Victoria L Thai
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, 95616, USA
- Department of Orthopaedic Surgery, UC Davis Health, 4860 Y Street, Suite 3800, Sacramento, CA, 95817, USA
| | - Diego O Candelas
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, 95616, USA
| | - J Kent Leach
- Department of Biomedical Engineering, University of California, Davis, Davis, CA, 95616, USA.
- Department of Orthopaedic Surgery, UC Davis Health, 4860 Y Street, Suite 3800, Sacramento, CA, 95817, USA.
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17
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Damle EB, Morrison VE, Cioma J, Volic M, Bix GJ. Co-administration of extracellular matrix-based biomaterials with neural stem cell transplantation for treatment of central nervous system injury. Front Neurosci 2023; 17:1177040. [PMID: 37255752 PMCID: PMC10225608 DOI: 10.3389/fnins.2023.1177040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 04/28/2023] [Indexed: 06/01/2023] Open
Abstract
Injuries and disorders of the central nervous system (CNS) present a particularly difficult challenge for modern medicine to address, given the complex nature of the tissues, obstacles in researching and implementing therapies, and barriers to translating efficacious treatments into human patients. Recent advancements in neural stem cell (NSC) transplantation, endogenous neurogenesis, and in vivo reprogramming of non-neural cells into the neuronal lineage represent multiple approaches to resolving CNS injury. However, we propose that one practice that must be incorporated universally in neuroregeneration studies is the use of extracellular matrix (ECM)-mimicking biomaterials to supply the architectural support and cellular microenvironment necessary for partial or complete restoration of function. Through consideration of developmental processes including neurogenesis, cellular migration, and establishment of functional connectivity, as well as evaluation of process-specific interactions between cells and ECM components, insights can be gained to harness and modulate native and induced neurobiological processes to promote CNS tissue repair. Further, evaluation of the current landscape of regenerative medicine and tissue engineering techniques external to the neurosciences provides key perspectives into the role of the ECM in the use of stem cell-based therapies, and the potential directions future neuroregenerative approaches may take. If the most successful of these approaches achieve wide-spread adoption, innovative paired NSC-ECM strategies for neuroregeneration may become prominent in the near future, and with the rapid advances these techniques are poised to herald, a new era of treatment for CNS injury may dawn.
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Affiliation(s)
- Eshan B. Damle
- Clinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA, United States
- Tulane Brain Institute, Tulane University, New Orleans, LA, United States
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA, United States
| | - Vivianne E. Morrison
- Clinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA, United States
| | - Jozef Cioma
- Faculty of Biology, Medicine, and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Milla Volic
- Faculty of Biology, Medicine, and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Gregory J. Bix
- Clinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA, United States
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18
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Lowen JM, Bond GC, Griffin KH, Shimamoto NK, Thai VL, Leach JK. Multisized Photoannealable Microgels Regulate Cell Spreading, Aggregation, and Macrophage Phenotype through Microporous Void Space. Adv Healthc Mater 2023; 12:e2202239. [PMID: 36719946 PMCID: PMC10198868 DOI: 10.1002/adhm.202202239] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 01/06/2023] [Indexed: 02/02/2023]
Abstract
Microgels are an emerging platform for in vitro models and guiding cell fate due to their inherent porosity and tunability. This work describes a light-based technique for rapidly annealing microgels across a range of diameters. Utilizing 8-arm poly(ethylene) glycol-vinyl sulfone, the number of arms available for crosslinking, functionalization, and annealing is stoichiometrically controlled. Small and large microgels are fabricated to explore how microgel diameter impacts void space and the role of porosity on cell spreading, cell aggregation, and macrophage polarization. Mesenchymal stromal cells spread rapidly in both formulations, yet the smaller microgels permit a higher cell density. When seeded with macrophages, the smaller microgels promote an M1 phenotype, while larger microgels promote an M2 phenotype. As another application, the inherent porosity of annealed microgels is leveraged to induce cell aggregation. Finally, the microgels are implanted to examine how different size microgels influence endogenous cell invasion and macrophage polarization. The use of ultraviolet light allows for microgels to be noninvasively injected into a desired mold or wound defect before annealing, and microgels of different properties combined to create a heterogeneous scaffold. This approach is clinically relevant given its tunability and fast annealing time.
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Affiliation(s)
- Jeremy M. Lowen
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
| | - Gabriella C. Bond
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
| | - Katherine H. Griffin
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
- School of Veterinary Medicine, University of California, Davis, CA 95616
| | | | - Victoria L. Thai
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
| | - J. Kent Leach
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
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19
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Kim SW, Seo I, Hyun J, Eom J, Um SH, Bhang SH. Fibronectin-Enriched Interface Using a Spheroid-Converged Cell Sheet for Effective Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2023; 15:11536-11548. [PMID: 36811454 DOI: 10.1021/acsami.2c20597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Cell sheets and spheroids are cell aggregates with excellent tissue-healing effects. However, their therapeutic outcomes are limited by low cell-loading efficacy and low extracellular matrix (ECM). Preconditioning cells with light illumination has been widely accepted to enhance reactive oxygen species (ROS)-mediated ECM expression and angiogenic factor secretion. However, there are difficulties in controlling the amount of ROS required to induce therapeutic cell signaling. Here, we develop a microstructure (MS) patch that can culture a unique human mesenchymal stem cell complex (hMSCcx), spheroid-attached cell sheets. The spheroid-converged cell sheet structure of hMSCcx shows high ROS tolerance compared to hMSC cell sheets owing to its high antioxidant capacity. The therapeutic angiogenic efficacy of hMSCcx is reinforced by regulating ROS levels without cytotoxicity using light (610 nm wavelength) illumination. The reinforced angiogenic efficacy of illuminated hMSCcx is based on the increased gap junctional interaction by enhanced fibronectin. hMSCcx engraftment is significantly improved in our novel MS patch by means of ROS tolerative structure of hMSCcx, leading to robust wound-healing outcomes in a mouse wound model. This study provides a new method to overcome the limitations of conventional cell sheets and spheroid therapy.
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Affiliation(s)
- Sung-Won Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Inwoo Seo
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jiyu Hyun
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jiin Eom
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Soong Ho Um
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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20
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Fok SW, Gresham RCH, Ryan W, Osipov B, Bahney C, Leach JK. Macromolecular crowding and decellularization method increase the growth factor binding potential of cell-secreted extracellular matrices. Front Bioeng Biotechnol 2023; 11:1091157. [PMID: 36756385 PMCID: PMC9899907 DOI: 10.3389/fbioe.2023.1091157] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 01/13/2023] [Indexed: 01/25/2023] Open
Abstract
Recombinant growth factors are used in tissue engineering to stimulate cell proliferation, migration, and differentiation. Conventional methods of growth factor delivery for therapeutic applications employ large amounts of these bioactive cues. Effective, localized growth factor release is essential to reduce the required dose and potential deleterious effects. The endogenous extracellular matrix (ECM) sequesters native growth factors through its negatively charged sulfated glycosaminoglycans. Mesenchymal stromal cells secrete an instructive extracellular matrix that can be tuned by varying culture and decellularization methods. In this study, mesenchymal stromal cell-secreted extracellular matrix was modified using λ-carrageenan as a macromolecular crowding (MMC) agent and decellularized with DNase as an alternative to previous decellularized extracellular matrices (dECM) to improve growth factor retention. Macromolecular crowding decellularized extracellular matrix contained 7.7-fold more sulfated glycosaminoglycans and 11.7-fold more total protein than decellularized extracellular matrix, with no significant difference in residual DNA. Endogenous BMP-2 was retained in macromolecular crowding decellularized extracellular matrix, whereas BMP-2 was not detected in other extracellular matrices. When implanted in a murine muscle pouch, we observed increased mineralized tissue formation with BMP-2-adsorbed macromolecular crowding decellularized extracellular matrix in vivo compared to conventional decellularized extracellular matrix. This study demonstrates the importance of decellularization method to retain endogenous sulfated glycosaminoglycans in decellularized extracellular matrix and highlights the utility of macromolecular crowding to upregulate sulfated glycosaminoglycan content. This platform has the potential to aid in the delivery of lower doses of BMP-2 or other heparin-binding growth factors in a tunable manner.
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Affiliation(s)
- Shierly W. Fok
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA, United States
| | - Robert C. H. Gresham
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA, United States
| | - Weston Ryan
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA, United States
| | - Benjamin Osipov
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA, United States
| | - Chelsea Bahney
- Steadman Philippon Research Institute, Vail, CO, United States
| | - J. Kent Leach
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA, United States,Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States,*Correspondence: J. Kent Leach,
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21
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Strategies to capitalize on cell spheroid therapeutic potential for tissue repair and disease modeling. NPJ Regen Med 2022; 7:70. [PMID: 36494368 PMCID: PMC9734656 DOI: 10.1038/s41536-022-00266-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022] Open
Abstract
Cell therapies offer a tailorable, personalized treatment for use in tissue engineering to address defects arising from trauma, inefficient wound repair, or congenital malformation. However, most cell therapies have achieved limited success to date. Typically injected in solution as monodispersed cells, transplanted cells exhibit rapid cell death or insufficient retention at the site, thereby limiting their intended effects to only a few days. Spheroids, which are dense, three-dimensional (3D) aggregates of cells, enhance the beneficial effects of cell therapies by increasing and prolonging cell-cell and cell-matrix signaling. The use of spheroids is currently under investigation for many cell types. Among cells under evaluation, spheroids formed of mesenchymal stromal cells (MSCs) are particularly promising. MSC spheroids not only exhibit increased cell survival and retained differentiation, but they also secrete a potent secretome that promotes angiogenesis, reduces inflammation, and attracts endogenous host cells to promote tissue regeneration and repair. However, the clinical translation of spheroids has lagged behind promising preclinical outcomes due to hurdles in their formation, instruction, and use that have yet to be overcome. This review will describe the current state of preclinical spheroid research and highlight two key examples of spheroid use in clinically relevant disease modeling. It will highlight techniques used to instruct the phenotype and function of spheroids, describe current limitations to their use, and offer suggestions for the effective translation of cell spheroids for therapeutic treatments.
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22
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Islam S, Parker J, Dash BC, Hsia HC. Human iPSC-Vascular smooth muscle cell spheroids demonstrate size-dependent alterations in cellular viability and secretory function. J Biomed Mater Res A 2022; 110:1813-1823. [PMID: 35815599 DOI: 10.1002/jbm.a.37423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/08/2022] [Accepted: 06/15/2022] [Indexed: 11/11/2022]
Abstract
Human-induced pluripotent stem cells (hiPSC) and their differentiated vascular cells have been revolutionizing the field of regenerative wound healing. These cells are shown to be rejuvenated with immense potentials in secreting paracrine factors. Recently, hiPSC-derived vascular smooth muscle cells (hiPSC-VSMC) have shown regenerative wound healing ability via their paracrine secretion. The quest to modulate the secretory function of these hiPSC-VSMC is an ongoing effort and involves the use of both biochemical and biophysical stimuli. This study explores the development and optimization of a reproducible, inexpensive protocol to form hiPSC-VSMC derived spheroids to investigate the implications of spheroid size on viability and paracrine secretion. Our data show the successful formation of different sizes of spheroids using various amount of hiPSC-VSMC. The hiPSC-VSMC spheroids formed with 10,000 cells strike an ideal balance between overall cell health and maximal paracrine secretion. The conditioned medium from these spheroids was found to be bioactive in enhancing human dermal fibroblast cell proliferation and migration. This research will inform future studies on the optimal spheroid size for regenerative wound healing applications.
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Affiliation(s)
- Sara Islam
- Section of Plastic Surgery, Department of Surgery, Yale School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Jackson Parker
- Section of Plastic Surgery, Department of Surgery, Yale School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Biraja C Dash
- Section of Plastic Surgery, Department of Surgery, Yale School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Henry C Hsia
- Section of Plastic Surgery, Department of Surgery, Yale School of Medicine, Yale University, New Haven, Connecticut, USA.,Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA
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