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Cho Y, Kim J, Park J, Doh J. Surface nanotopography and cell shape modulate tumor cell susceptibility to NK cell cytotoxicity. MATERIALS HORIZONS 2023; 10:4532-4540. [PMID: 37559559 DOI: 10.1039/d3mh00367a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Natural killer (NK) cells are innate cytotoxic lymphocytes exerting cytotoxicity against virally infected cells and tumor cells. NK cell cytotoxicity is primarily determined by biochemical signals received from ligands expressed on target cell surfaces, but it is also possible that biophysical environments of tumor cells, such as nanoscale surface topography typically existing on extracellular matrixes (ECMs) or cell morphology determined by ECM spaces or cell density, regulate NK cell cytotoxicity. In this study, micro/nanofabrication technology was applied to examine this possibility. Tumor cells were plated on flat or nanogrooved surfaces, or micropatterned into circular or elliptical geometries, and the effects of surface topography and tumor cell morphology on NK cell cytotoxicity were investigated. NK cells exhibited significantly higher cytotoxicity against tumor cells on nanogrooved surfaces or tumor cells in elliptical patterns than tumor cells on flat surfaces or tumor cells in circular patterns, respectively. The amounts of stress fiber formation in tumor cells positively correlated with NK cell cytotoxicity, indicating that increased cellular tension of tumor cells, either mediated by nanogrooved surfaces or elongated morphologies, was a key factor regulating NK cell cytotoxicity. These results may provide insight into the design of NK cell-based cancer immunotherapy.
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Affiliation(s)
- Yongbum Cho
- School of Interdisciplinary Bioscience and Bioengineering (I-Bio), Pohang University of Science and Technology, 77, Cheongam-ro, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - JangHyuk Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea.
| | - Jeehun Park
- SOFT Foundry Institute, Seoul National University, Seoul, South Korea.
| | - Junsang Doh
- Department of Materials Science and Engineering, Seoul National University, Seoul, South Korea.
- SOFT Foundry Institute, Seoul National University, Seoul, South Korea.
- Institute of Engineering Research, BioMAX, Seoul National University, Seoul, South Korea
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2
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Kamperman T, Willemen NGA, Kelder C, Koerselman M, Becker M, Lins L, Johnbosco C, Karperien M, Leijten J. Steering Stem Cell Fate within 3D Living Composite Tissues Using Stimuli-Responsive Cell-Adhesive Micromaterials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205487. [PMID: 36599686 PMCID: PMC10074101 DOI: 10.1002/advs.202205487] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/28/2022] [Indexed: 06/12/2023]
Abstract
Engineered living microtissues such as cellular spheroids and organoids have enormous potential for the study and regeneration of tissues and organs. Microtissues are typically engineered via self-assembly of adherent cells into cellular spheroids, which are characterized by little to no cell-material interactions. Consequently, 3D microtissue models currently lack structural biomechanical and biochemical control over their internal microenvironment resulting in suboptimal functional performance such as limited stem cell differentiation potential. Here, this work report on stimuli-responsive cell-adhesive micromaterials (SCMs) that can self-assemble with cells into 3D living composite microtissues through integrin binding, even under serum-free conditions. It is demonstrated that SCMs homogeneously distribute within engineered microtissues and act as biomechanically and biochemically tunable designer materials that can alter the composite tissue microenvironment on demand. Specifically, cell behavior is controlled based on the size, stiffness, number ratio, and biofunctionalization of SCMs in a temporal manner via orthogonal secondary crosslinking strategies. Photo-based mechanical tuning of SCMs reveals early onset stiffness-controlled lineage commitment of differentiating stem cell spheroids. In contrast to conventional encapsulation of stem cell spheroids within bulk hydrogel, incorporating cell-sized SCMs within stem cell spheroids uniquely provides biomechanical cues throughout the composite microtissues' volume, which is demonstrated to be essential for osteogenic differentiation.
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Affiliation(s)
- Tom Kamperman
- Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 5Enschede7522NBThe Netherlands
| | - Niels G. A. Willemen
- Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 5Enschede7522NBThe Netherlands
| | - Cindy Kelder
- Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 5Enschede7522NBThe Netherlands
| | - Michelle Koerselman
- Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 5Enschede7522NBThe Netherlands
| | - Malin Becker
- Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 5Enschede7522NBThe Netherlands
| | - Luanda Lins
- Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 5Enschede7522NBThe Netherlands
| | - Castro Johnbosco
- Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 5Enschede7522NBThe Netherlands
| | - Marcel Karperien
- Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 5Enschede7522NBThe Netherlands
| | - Jeroen Leijten
- Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 5Enschede7522NBThe Netherlands
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Rousselle P, Laigle C, Rousselet G. The basement membrane in epidermal polarity, stemness, and regeneration. Am J Physiol Cell Physiol 2022; 323:C1807-C1822. [PMID: 36374168 DOI: 10.1152/ajpcell.00069.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The epidermis is a specialized epithelium that constitutes the outermost layer of the skin, and it provides a protective barrier against environmental assaults. Primarily consisting of multilayered keratinocytes, the epidermis is continuously renewed by proliferation of stem cells and the differentiation of their progeny, which undergo terminal differentiation as they leave the basal layer and move upward toward the surface, where they die and slough off. Basal keratinocytes rest on a basement membrane at the dermal-epidermal junction that is composed of specific extracellular matrix proteins organized into interactive and mechanically supportive networks. Firm attachment of basal keratinocytes, and their dynamic regulation via focal adhesions and hemidesmosomes, is essential for maintaining major skin processes, such as self-renewal, barrier function, and resistance to physical and chemical stresses. The adhesive integrin receptors expressed by epidermal cells serve structural, signaling, and mechanosensory roles that are critical for epidermal cell anchorage and tissue homeostasis. More specifically, the basement membrane components play key roles in preserving the stem cell pool, and establishing cell polarity cues enabling asymmetric cell divisions, which result in the transition from a proliferative basal cell layer to suprabasal cells committed to terminal differentiation. Finally, through a well-regulated sequence of synthesis and remodeling, the components of the dermal-epidermal junction play an essential role in regeneration of the epidermis during skin healing. Here too, they provide biological and mechanical signals that are essential to the restoration of barrier function.
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Affiliation(s)
- Patricia Rousselle
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR 5305, CNRS, Université Lyon 1, Lyon, France
| | - Chloé Laigle
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR 5305, CNRS, Université Lyon 1, Lyon, France
| | - Gaelle Rousselet
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR 5305, CNRS, Université Lyon 1, Lyon, France
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4
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Bedell ML, Torres AL, Hogan KJ, Wang Z, Wang B, Melchiorri AJ, Grande-Allen KJ, Mikos AG. Human gelatin-based composite hydrogels for osteochondral tissue engineering and their adaptation into bioinks for extrusion, inkjet, and digital light processing bioprinting. Biofabrication 2022; 14:10.1088/1758-5090/ac8768. [PMID: 35931060 PMCID: PMC9633045 DOI: 10.1088/1758-5090/ac8768] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 08/04/2022] [Indexed: 11/11/2022]
Abstract
The investigation of novel hydrogel systems allows for the study of relationships between biomaterials, cells, and other factors within osteochondral tissue engineering. Three-dimensional (3D) printing is a popular research method that can allow for further interrogation of these questions via the fabrication of 3D hydrogel environments that mimic tissue-specific, complex architectures. However, the adaptation of promising hydrogel biomaterial systems into 3D-printable bioinks remains a challenge. Here, we delineated an approach to that process. First, we characterized a novel methacryloylated gelatin composite hydrogel system and assessed how calcium phosphate and glycosaminoglycan additives upregulated bone- and cartilage-like matrix deposition and certain genetic markers of differentiation within human mesenchymal stem cells (hMSCs), such as RUNX2 and SOX9. Then, new assays were developed and utilized to study the effects of xanthan gum and nanofibrillated cellulose, which allowed for cohesive fiber deposition, reliable droplet formation, and non-fracturing digital light processing (DLP)-printed constructs within extrusion, inkjet, and DLP techniques, respectively. Finally, these bioinks were used to 3D print constructs containing viable encapsulated hMSCs over a 7 d period, where DLP printed constructs facilitated the highest observed increase in cell number over 7 d (∼2.4×). The results presented here describe the promotion of osteochondral phenotypes via these novel composite hydrogel formulations, establish their ability to bioprint viable, cell-encapsulating constructs using three different 3D printing methods on multiple bioprinters, and document how a library of modular bioink additives affected those physicochemical properties important to printability.
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Affiliation(s)
| | | | - Katie J. Hogan
- Department of Bioengineering, Rice University, Houston, TX
- Medical Scientist Training Program, Baylor College of Medicine, Houston, TX
| | - Ziwen Wang
- Department of Bioengineering, Rice University, Houston, TX
| | - Bonnie Wang
- Department of Bioengineering, Rice University, Houston, TX
| | | | | | - Antonios G. Mikos
- Department of Bioengineering, Rice University, Houston, TX
- NIBIB/NIH Center for Engineering Complex Tissues, USA
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TRPM7 Ion Channel: Oncogenic Roles and Therapeutic Potential in Breast Cancer. Cancers (Basel) 2021; 13:cancers13246322. [PMID: 34944940 PMCID: PMC8699295 DOI: 10.3390/cancers13246322] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Breast cancer is the most frequently diagnosed malignant tumor and the second leading cause of cancer death in women worldwide. The risk of developing breast cancer is 12.8%, i.e., 1 in 8 people, and a woman’s risk of dying is approximately 1 in 39. Calcium signals play an important role in various cancers and transport calcium ions may have altered expression in breast cancer, such as the TRPM7 calcium permeant ion channel, where overexpression may be associated with a poor prognosis. This review focuses on the TRPM7 channel, and the oncogenic roles studied so far in breast cancer. The TRPM7 ion channel is suggested as a potential and prospective target in the diagnosis and treatment of breast cancer. Abstract The transient receptor potential melastatin-subfamily member 7 (TRPM7) is a divalent cations permeant channel but also has intrinsic serine/threonine kinase activity. It is ubiquitously expressed in normal tissues and studies have indicated that it participates in important physiological and pharmacological processes through its channel-kinase activity, such as calcium/magnesium homeostasis, phosphorylation of proteins involved in embryogenesis or the cellular process. Accumulating evidence has shown that TRPM7 is overexpressed in human pathologies including breast cancer. Breast cancer is the second leading cause of cancer death in women with an incidence rate increase of around 0.5% per year since 2004. The overexpression of TRPM7 may be associated with a poor prognosis in breast cancer patients, so more efforts are needed to research a new therapeutic target. TRPM7 regulates the levels of Ca2+, which can alter the signaling pathways involved in survival, cell cycle progression, proliferation, growth, migration, invasion, epithelial-mesenchymal transition and thus determines cell behavior, promoting tumor development. This work provides a complete overview of the TRPM7 ion channel and its main involvements in breast cancer. Special consideration is given to the modulation of the channel as a potential target in breast cancer treatment by inhibition of proliferation, migration and invasion. Taken together, these data suggest the potential exploitation of TRPM7 channel-kinase as a therapeutic target and a diagnostic biomarker.
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Berger AJ, Anvari G, Bellas E. Mechanical Memory Impairs Adipose-Derived Stem Cell (ASC) Adipogenic Capacity After Long-Term In Vitro Expansion. Cell Mol Bioeng 2021; 14:397-408. [PMID: 34777600 DOI: 10.1007/s12195-021-00705-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 09/10/2021] [Indexed: 01/04/2023] Open
Abstract
Introduction Adipose derived stem cells (ASCs) hold great promise for clinical applications such as soft tissue regeneration and for in vitro tissue models and are notably easy to derive in large numbers. Specifically, ASCs provide an advantage for in vitro models of adipose tissue, where they can be employed as tissue specific cells and for patient specific models. However, ASC in vitro expansion may unintentionally reduce adipogenic capacity due to the stiffness of tissue culture plastic (TCPS). Methods Here, we expanded freshly isolated ASCs on soft and stiff substrates for 4 passages before adipogenic differentiation. At the last passage we swapped the substrate from stiff to soft, or soft to stiff to determine if short term exposure to a different substrate altered adipogenic capacity. Results Expansion on stiff substrates reduced adipogenic capacity by 50% which was not rescued by swapping to a soft substrate for the last passage. Stiff substrates had greater nuclear area and gene expression of nesprin-2, a protein that mediates the tension of the nuclear envelope by tethering it to the actin cytoskeleton. Upon swapping to a soft substrate, the nuclear area was reduced but nesprin-2 levels did not fully recover, which differentially regulated cell commitment transcriptional factors. Conclusion Therefore, in vitro expansion on stiff substrates must be carefully considered when the end-goal of the expansion is for adipose tissue or soft tissue applications.
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Affiliation(s)
- Anthony J Berger
- Department of Bioengineering, College of Engineering, Temple University, 1947 N. 12th Street, Philadelphia, PA 19122 USA
| | - Golnaz Anvari
- Department of Bioengineering, College of Engineering, Temple University, 1947 N. 12th Street, Philadelphia, PA 19122 USA
| | - Evangelia Bellas
- Department of Bioengineering, College of Engineering, Temple University, 1947 N. 12th Street, Philadelphia, PA 19122 USA.,Department of Surgery, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19122 USA
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Bittenglova K, Habart D, Saudek F, Koblas T. The Potential of Pancreatic Organoids for Diabetes Research and Therapy. Islets 2021; 13:85-105. [PMID: 34523383 PMCID: PMC8528407 DOI: 10.1080/19382014.2021.1941555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 06/04/2021] [Indexed: 10/20/2022] Open
Abstract
The success of clinical transplantation of pancreas or isolated pancreatic islets supports the concept of cell-based cure for diabetes. One limitation is the shortage of cadaver human pancreata. The demand-supply gap could potentially be bridged by harnessing the self-renewal capacity of stem cells. Pluripotent stem cells and adult pancreatic stem cells have been explored as possible cell sources. Recently, a system for long-term culture of proposed adult pancreatic stem cells in a form of organoids was developed. Generated organoids partially mimic the architecture and cell-type composition of pancreatic tissue. Here, we review the attempts over the past decade, to utilize the organoid cell culture principles in order to identify, expand, and differentiate the adult pancreatic stem cells from different compartments of mouse and human pancreata. The development of the culture conditions, effects of specific growth factors and small molecules is discussed. The potential utility of the adult pancreatic stem cells is considered in the context of other cell sources.
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Affiliation(s)
- Katerina Bittenglova
- Department of Diabetes, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - David Habart
- Department of Diabetes, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Frantisek Saudek
- Department of Diabetes, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Tomas Koblas
- Department of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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Han X, Tang S, Wang L, Xu X, Yan R, Yan S, Guo Z, Hu K, Yu T, Li M, Li Y, Zhang F, Gu N. Multicellular Spheroids Formation on Hydrogel Enhances Osteogenic/Odontogenic Differentiation of Dental Pulp Stem Cells Under Magnetic Nanoparticles Induction. Int J Nanomedicine 2021; 16:5101-5115. [PMID: 34349510 PMCID: PMC8327189 DOI: 10.2147/ijn.s318991] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/28/2021] [Indexed: 12/11/2022] Open
Abstract
Introduction Promotion odontogenic differentiation of dental pulp stem cells (DPSCs) is essential for dentin regeneration. Physical cellular microenvironment is of critical importance for stem cells differentiation and influences the function of other biological/chemical factors to differentiation. Methods Based on adjusting the mechanical/interfacial properties of hydrogels, multicellular spheroids (MCSs) of DPSCs generated through self-organization. The spheroids were characterized by immunofluorescent staining and flow cytometry. Quantitative real-time polymerase chain reaction, alkaline phosphatase (ALP) activity assay, ALP staining and Alizarin Red S staining were performed to evaluate the osteogenic/odontogenic differentiation of DPSCs with or without magnetic iron oxide nanoparticles (IONPs) induction. Results MCSs of DPSCs exhibited a significant upregulation of E-cadherin and N-cadherin and enriched CD146 positive subpopulation, along with a stronger osteogenic/odontogenic differentiation ability. Moreover, DPSCs spheroids showed more substantial osteogenic differentiation tendency than the classical two-dimensional cultured DPSCs under the stimulation of magnetic IONPs. Conclusion Three-dimensional spheroids culture of DPSCs based on composite viscoelastic materials combined with mechanical/magnetic stimulation may provide a theoretical basis for the subsequent development of dentin or bone regeneration technology.
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Affiliation(s)
- Xiao Han
- Jiangsu Key Laboratory of Oral Diseases, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China.,Laboratory of Oral Regenerative Medicine Technology, School of Biomedical Engineering and Informatics, Department of Biomedical Engineering, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Shijia Tang
- Jiangsu Key Laboratory of Oral Diseases, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Lin Wang
- Jiangsu Key Laboratory of Oral Diseases, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Xueqin Xu
- Laboratory of Oral Regenerative Medicine Technology, School of Biomedical Engineering and Informatics, Department of Biomedical Engineering, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Ruhan Yan
- Laboratory of Oral Regenerative Medicine Technology, School of Biomedical Engineering and Informatics, Department of Biomedical Engineering, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Sen Yan
- Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, People's Republic of China
| | - Zhaobin Guo
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, USA
| | - Ke Hu
- Jiangsu Key Laboratory of Oral Diseases, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China.,Laboratory of Oral Regenerative Medicine Technology, School of Biomedical Engineering and Informatics, Department of Biomedical Engineering, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Tingting Yu
- Department of Medical Genetics, School of Basic Medical Science & Jiangsu Key Laboratory of Xenotransplantation, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Mengping Li
- Laboratory of Oral Regenerative Medicine Technology, School of Biomedical Engineering and Informatics, Department of Biomedical Engineering, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Yuqin Li
- Laboratory of Oral Regenerative Medicine Technology, School of Biomedical Engineering and Informatics, Department of Biomedical Engineering, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Feimin Zhang
- Jiangsu Key Laboratory of Oral Diseases, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China.,Laboratory of Oral Regenerative Medicine Technology, School of Biomedical Engineering and Informatics, Department of Biomedical Engineering, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Ning Gu
- Laboratory of Oral Regenerative Medicine Technology, School of Biomedical Engineering and Informatics, Department of Biomedical Engineering, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China.,Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, People's Republic of China
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Emon MAB, Knoll S, Doha U, Ladehoff L, Lalonde L, Baietto D, Sivaguru M, Bhargava R, Saif MTA. Dose- independent threshold illumination for non-invasive time-lapse fluorescence imaging of live cells. EXTREME MECHANICS LETTERS 2021; 46:101249. [PMID: 34095408 PMCID: PMC8171180 DOI: 10.1016/j.eml.2021.101249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Fluorescent microscopy employs monochromatic light for excitation, which can adversely affect the cells being observed. We reported earlier that fibroblasts relax their contractile force in response to green light of typical intensity. Here we show that such effects are independent of extracellular matrix and cell lines. In addition, we establish a threshold intensity that elicits minimal or no adverse effect on cell contractility even for long-time exposure. This threshold intensity is wavelength dependent. We cultured fibroblasts on soft 2D elastic hydrogels embedded with fluorescent beads to trace substrate deformation and cell forces. The beads move towards cell center when cells contract, but they move away when cells relax. We use relaxation/contraction ratio (λ r), in addition to traction force, as measures of cell response to red (wavelength, λ=635-650 nm), green (λ=545-580 nm) and blue (λ=455-490 nm) lights with varying intensities. Our results suggest that intensities below 57, 31 and 3.5 W/m2 for red, green and blue lights, respectively, do not perturb force homeostasis. To our knowledge, these intensities are the lowest reported safe thresholds, implying that cell traction is a highly sensitive readout of the effect of light on cells. Most importantly, we find these threshold intensities to be dose-independent; i.e., safe regardless of the energy dosage or time of exposure. Conversely, higher intensities result in widespread force-relaxation in cells with λ r > 1. Furthermore, we present a photo-reaction based model that simulates photo-toxicity and predicts threshold intensity for different wavelengths within the visible spectra. In conclusion, we recommend employing illumination intensities below aforementioned wavelength-specific thresholds for time-lapse imaging of cells and tissues in order to avoid light-induced artifacts in experimental observations.
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Affiliation(s)
- M A Bashar Emon
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
| | - Samantha Knoll
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
| | - Umnia Doha
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
| | - Lauren Ladehoff
- Dept. of Bioengineering, University of Illinois at Urbana-Champaign
| | - Luke Lalonde
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
| | - Danielle Baietto
- Dept. of Bioengineering, University of Illinois at Urbana-Champaign
| | - Mayandi Sivaguru
- Carle Woese Institute of Genomic Biology, University of Illinois at Urbana-Champaign
| | - Rohit Bhargava
- Dept. of Bioengineering, University of Illinois at Urbana-Champaign
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign
| | - M Taher A Saif
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
- Dept. of Bioengineering, University of Illinois at Urbana-Champaign
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign
- Corresponding author: M Taher A Saif, Gutgsell Professor, Associate Head for Graduate Programs and Research, Mechanical Science and Engineering, Research Professor, Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, 2101D Mechanical Engineering Laboratory, 105 S. Mathews Avenue, Urbana, IL 61801, USA, , Tel: 217-333-8552, Fax: 217-244-6534, http://saif.mechse.illinois.edu/
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Jauković A, Abadjieva D, Trivanović D, Stoyanova E, Kostadinova M, Pashova S, Kestendjieva S, Kukolj T, Jeseta M, Kistanova E, Mourdjeva M. Specificity of 3D MSC Spheroids Microenvironment: Impact on MSC Behavior and Properties. Stem Cell Rev Rep 2021; 16:853-875. [PMID: 32681232 DOI: 10.1007/s12015-020-10006-9] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mesenchymal stem cells (MSC) have been considered the promising candidates for the regenerative and personalized medicine due to their self-renewal potential, multilineage differentiation and immunomodulatory capacity. Although these properties have encouraged profound MSC studies in recent years, the majority of research has been based on standard 2D culture utilization. The opportunity to resemble in vivo characteristics of cells native niche has been provided by implementation of 3D culturing models such as MSC spheroid formation assesed through cells self-assembling. In this review, we address the current literature on physical and biochemical features of 3D MSC spheroid microenvironment and their impact on MSC properties and behaviors. Starting with the reduction in the cells' dimensions and volume due to the changes in adhesion molecules expression and cytoskeletal proteins rearrangement resembling native conditions, through the microenvironment shifts in oxygen, nutrients and metabolites gradients and demands, we focus on distinctive and beneficial features of MSC in spheroids compared to cells cultured in 2D conditions. By summarizing the data for 3D MSC spheroids regarding cell survival, pluripotency, differentiation, immunomodulatory activities and potential to affect tumor cells growth we highlighted advantages and perspectives of MSC spheroids use in regenerative medicine. Further detailed analyses are needed to deepen our understanding of mechanisms responsible for modified MSC behavior in spheroids and to set future directions for MSC clinical application.
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Affiliation(s)
- Aleksandra Jauković
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Dr. Subotića 4, PO BOX 102, Belgrade, 11129, Serbia
| | - Desislava Abadjieva
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, 73 Tzarigradsko shoes, 1113, Sofia, Bulgaria
| | - Drenka Trivanović
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Dr. Subotića 4, PO BOX 102, Belgrade, 11129, Serbia.,IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Clinics, Röntgenring 11, D-97070, Wuerzburg, Germany.,Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Germany
| | - Elena Stoyanova
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, 73 Tzarigradsko shoes, 1113, Sofia, Bulgaria
| | - Milena Kostadinova
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, 73 Tzarigradsko shoes, 1113, Sofia, Bulgaria
| | - Shina Pashova
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, 73 Tzarigradsko shoes, 1113, Sofia, Bulgaria
| | - Snejana Kestendjieva
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, 73 Tzarigradsko shoes, 1113, Sofia, Bulgaria
| | - Tamara Kukolj
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Dr. Subotića 4, PO BOX 102, Belgrade, 11129, Serbia
| | - Michal Jeseta
- Department of Obstetrics and Gynecology, University Hospital and Masaryk University, Obilní trh 11, 602 00, Brno, Czech Republic.,Department of Veterinary Sciences, Czech University of Life Sciences in Prague, Kamýcká 129, 165 00, Suchdol, Praha 6, Czech Republic
| | - Elena Kistanova
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, 73 Tzarigradsko shoes, 1113, Sofia, Bulgaria
| | - Milena Mourdjeva
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, 73 Tzarigradsko shoes, 1113, Sofia, Bulgaria.
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DiNapoli KT, Robinson DN, Iglesias PA. Tools for computational analysis of moving boundary problems in cellular mechanobiology. WILEY INTERDISCIPLINARY REVIEWS. SYSTEMS BIOLOGY AND MEDICINE 2020; 13:e1514. [PMID: 33305503 DOI: 10.1002/wsbm.1514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/08/2020] [Accepted: 10/20/2020] [Indexed: 12/29/2022]
Abstract
A cell's ability to change shape is one of the most fundamental biological processes and is essential for maintaining healthy organisms. When the ability to control shape goes awry, it often results in a diseased system. As such, it is important to understand the mechanisms that allow a cell to sense and respond to its environment so as to maintain cellular shape homeostasis. Because of the inherent complexity of the system, computational models that are based on sound theoretical understanding of the biochemistry and biomechanics and that use experimentally measured parameters are an essential tool. These models involve an inherent feedback, whereby shape is determined by the action of regulatory signals whose spatial distribution depends on the shape. To carry out computational simulations of these moving boundary problems requires special computational techniques. A variety of alternative approaches, depending on the type and scale of question being asked, have been used to simulate various biological processes, including cell motility, division, mechanosensation, and cell engulfment. In general, these models consider the forces that act on the system (both internally generated, or externally imposed) and the mechanical properties of the cell that resist these forces. Moving forward, making these techniques more accessible to the non-expert will help improve interdisciplinary research thereby providing new insight into important biological processes that affect human health. This article is categorized under: Cancer > Cancer>Computational Models Cancer > Cancer>Molecular and Cellular Physiology.
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Affiliation(s)
- Kathleen T DiNapoli
- Department of Cell Biology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Douglas N Robinson
- Department of Cell Biology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Pablo A Iglesias
- Department of Cell Biology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
- Department of Electrical & Computer Engineering, Johns Hopkins University, Baltimore, Maryland, USA
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12
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Roig-Rosello E, Rousselle P. The Human Epidermal Basement Membrane: A Shaped and Cell Instructive Platform That Aging Slowly Alters. Biomolecules 2020; 10:E1607. [PMID: 33260936 PMCID: PMC7760980 DOI: 10.3390/biom10121607] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 12/11/2022] Open
Abstract
One of the most important functions of skin is to act as a protective barrier. To fulfill this role, the structural integrity of the skin depends on the dermal-epidermal junction-a complex network of extracellular matrix macromolecules that connect the outer epidermal layer to the underlying dermis. This junction provides both a structural support to keratinocytes and a specific niche that mediates signals influencing their behavior. It displays a distinctive microarchitecture characterized by an undulating pattern, strengthening dermal-epidermal connectivity and crosstalk. The optimal stiffness arising from the overall molecular organization, together with characteristic anchoring complexes, keeps the dermis and epidermis layers extremely well connected and capable of proper epidermal renewal and regeneration. Due to intrinsic and extrinsic factors, a large number of structural and biological changes accompany skin aging. These changes progressively weaken the dermal-epidermal junction substructure and affect its functions, contributing to the gradual decline in overall skin physiology. Most changes involve reduced turnover or altered enzymatic or non-enzymatic post-translational modifications, compromising the mechanical properties of matrix components and cells. This review combines recent and older data on organization of the dermal-epidermal junction, its mechanical properties and role in mechanotransduction, its involvement in regeneration, and its fate during the aging process.
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Affiliation(s)
- Eva Roig-Rosello
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR 5305, CNRS-Université Lyon 1, SFR BioSciences Gerland-Lyon Sud, 7 Passage du Vercors, 69367 Lyon, France;
- Roger Gallet SAS, 4 rue Euler, 75008 Paris, France
| | - Patricia Rousselle
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR 5305, CNRS-Université Lyon 1, SFR BioSciences Gerland-Lyon Sud, 7 Passage du Vercors, 69367 Lyon, France;
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13
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De Belly H, Stubb A, Yanagida A, Labouesse C, Jones PH, Paluch EK, Chalut KJ. Membrane Tension Gates ERK-Mediated Regulation of Pluripotent Cell Fate. Cell Stem Cell 2020; 28:273-284.e6. [PMID: 33217323 PMCID: PMC7875115 DOI: 10.1016/j.stem.2020.10.018] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 09/18/2020] [Accepted: 10/28/2020] [Indexed: 12/22/2022]
Abstract
Cell fate transitions are frequently accompanied by changes in cell shape and mechanics. However, how cellular mechanics affects the instructive signaling pathways controlling cell fate is poorly understood. To probe the interplay between shape, mechanics, and fate, we use mouse embryonic stem cells (ESCs), which change shape as they undergo early differentiation. We find that shape change is regulated by a β-catenin-mediated decrease in RhoA activity and subsequent decrease in the plasma membrane tension. Strikingly, preventing a decrease in membrane tension results in early differentiation defects in ESCs and gastruloids. Decreased membrane tension facilitates the endocytosis of FGF signaling components, which activate ERK signaling and direct the exit from the ESC state. Increasing Rab5a-facilitated endocytosis rescues defective early differentiation. Thus, we show that a mechanically triggered increase in endocytosis regulates early differentiation. Our findings are of fundamental importance for understanding how cell mechanics regulates biochemical signaling and therefore cell fate.
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Affiliation(s)
- Henry De Belly
- MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK; Wellcome/MRC Cambridge Stem Cell Research Institute, Puddicombe Way, University of Cambridge, Cambridge CB2 0AW, UK; Department of Physiology, Development, and Neuroscience, Downing Street, University of Cambridge, Cambridge CB2 3DY, UK
| | - Aki Stubb
- Department of Physiology, Development, and Neuroscience, Downing Street, University of Cambridge, Cambridge CB2 3DY, UK
| | - Ayaka Yanagida
- Wellcome/MRC Cambridge Stem Cell Research Institute, Puddicombe Way, University of Cambridge, Cambridge CB2 0AW, UK; Living Systems Institute, University of Exeter, Exeter EX4 4QD, UK
| | - Céline Labouesse
- Wellcome/MRC Cambridge Stem Cell Research Institute, Puddicombe Way, University of Cambridge, Cambridge CB2 0AW, UK
| | - Philip H Jones
- Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
| | - Ewa K Paluch
- MRC Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK; Department of Physiology, Development, and Neuroscience, Downing Street, University of Cambridge, Cambridge CB2 3DY, UK.
| | - Kevin J Chalut
- Wellcome/MRC Cambridge Stem Cell Research Institute, Puddicombe Way, University of Cambridge, Cambridge CB2 0AW, UK.
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14
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Petroll WM, Varner VD, Schmidtke DW. Keratocyte mechanobiology. Exp Eye Res 2020; 200:108228. [PMID: 32919993 PMCID: PMC7655662 DOI: 10.1016/j.exer.2020.108228] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/31/2020] [Accepted: 09/02/2020] [Indexed: 01/22/2023]
Abstract
In vivo, corneal keratocytes reside within a complex 3D extracellular matrix (ECM) consisting of highly aligned collagen lamellae, growth factors, and other extracellular matrix components, and are subjected to various mechanical stimuli during developmental morphogenesis, fluctuations in intraocular pressure, and wound healing. The process by which keratocytes convert changes in mechanical stimuli (e.g. local topography, applied force, ECM stiffness) into biochemical signaling is known as mechanotransduction. Activation of the various mechanotransductive pathways can produce changes in cell migration, proliferation, and differentiation. Here we review how corneal keratocytes respond to and integrate different biochemical and biophysical factors. We first highlight how growth factors and other cytokines regulate the activity of Rho GTPases, cytoskeletal remodeling, and ultimately the mechanical phenotype of keratocytes. We then discuss how changes in the mechanical properties of the ECM have been shown to regulate keratocyte behavior in sophisticated 2D and 3D experimental models of the corneal microenvironment. Finally, we discuss how ECM topography and protein composition can modulate cell phenotypes, and review the different methods of fabricating in vitro mimics of corneal ECM topography, novel approaches for examining topographical effects in vivo, and the impact of different ECM glycoproteins and proteoglycans on keratocyte behavior.
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Affiliation(s)
- W Matthew Petroll
- Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
| | - Victor D Varner
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA; Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - David W Schmidtke
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA; Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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15
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Bilodeau P, Jacobsen D, Law-Vinh D, Lee JM. Phosphatidylinositol 4-kinase III beta regulates cell shape, migration, and focal adhesion number. Mol Biol Cell 2020; 31:1904-1916. [PMID: 32583740 PMCID: PMC7525810 DOI: 10.1091/mbc.e19-11-0600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Cell shape is regulated by cell adhesion and cytoskeletal and membrane dynamics. Cell shape, adhesion, and motility have a complex relationship and understanding them is important in understanding developmental patterning and embryogenesis. Here we show that the lipid kinase phosphatidylinositol 4-kinase III beta (PI4KIIIβ) regulates cell shape, migration, and focal adhesion (FA) number. PI4KIIIβ generates phosphatidylinositol 4-phosphate (PI4P) from phosphatidylinositol and is highly expressed in a subset of human breast cancers. PI4KIIIβ and the PI4P it generates regulate a variety of cellular functions, ranging from control of Golgi structure, fly fertility, and Akt signaling. Here, we show that loss of PI4KIIIβ expression decreases cell migration and alters cell shape in NIH3T3 fibroblasts. The changes are accompanied by an increase in the number of FA in cells lacking PI4KIIIβ. Furthermore, we find that PI4P-containing vesicles move to the migratory leading edge during migration and that some of these vesicles tether to and fuse with FA. Fusion is associated with FA disassembly. This suggests a novel regulatory role for PI4KIIIβ and PI4P in cell adhesion and cell shape maintenance.
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Affiliation(s)
- Patricia Bilodeau
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Daniel Jacobsen
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Denise Law-Vinh
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Jonathan M Lee
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON K1H 8M5, Canada
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16
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Gaut L, Bonnin MA, Blavet C, Cacciapuoti I, Orpel M, Mericskay M, Duprez D. Mechanical and molecular parameters that influence the tendon differentiation potential of C3H10T1/2 cells in 2D- and 3D-culture systems. Biol Open 2020; 9:bio047928. [PMID: 31941700 PMCID: PMC6994949 DOI: 10.1242/bio.047928] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 01/06/2020] [Indexed: 12/13/2022] Open
Abstract
One of the main challenges relating to tendons is to understand the regulators of the tendon differentiation program. The optimum culture conditions that favor tendon cell differentiation have not been identified. Mesenchymal stem cells present the ability to differentiate into multiple lineages in cultures under different cues ranging from chemical treatment to physical constraints. We analyzed the tendon differentiation potential of C3H10T1/2 cells, a murine cell line of mesenchymal stem cells, upon different 2D- and 3D-culture conditions. We observed that C3H10T1/2 cells cultured in 2D conditions on silicone substrate were more prone to tendon differentiation, assessed with the expression of the tendon markers Scx, Col1a1 and Tnmd as compared to cells cultured on plastic substrate. The 3D-fibrin environment was more favorable for Scx and Col1a1 expression compared to 2D cultures. We also identified TGFβ2 as a negative regulator of Tnmd expression in C3H10T1/2 cells in 2D and 3D cultures. Altogether, our results provide us with a better understanding of the culture conditions that promote tendon gene expression and identify mechanical and molecular parameters upon which we could act to define the optimum culture conditions that favor tenogenic differentiation in mesenchymal stem cells.
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Affiliation(s)
- Ludovic Gaut
- Sorbonne Université, Institut Biologie Paris Seine, CNRS, IBPS-UMR7622, Laboratoire de Biologie du Développement, Inserm U1156, F75005 Paris, France
| | - Marie-Ange Bonnin
- Sorbonne Université, Institut Biologie Paris Seine, CNRS, IBPS-UMR7622, Laboratoire de Biologie du Développement, Inserm U1156, F75005 Paris, France
| | - Cédrine Blavet
- Sorbonne Université, Institut Biologie Paris Seine, CNRS, IBPS-UMR7622, Laboratoire de Biologie du Développement, Inserm U1156, F75005 Paris, France
| | | | - Monika Orpel
- Sorbonne Université, Institut Biologie Paris Seine, CNRS, IBPS-UMR7622, Laboratoire de Biologie du Développement, Inserm U1156, F75005 Paris, France
| | - Mathias Mericskay
- Inserm UMR-S 1180, Faculté de Pharmacie, Univ. Paris-SUD, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
| | - Delphine Duprez
- Sorbonne Université, Institut Biologie Paris Seine, CNRS, IBPS-UMR7622, Laboratoire de Biologie du Développement, Inserm U1156, F75005 Paris, France
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17
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Prasad A, Alizadeh E. Cell Form and Function: Interpreting and Controlling the Shape of Adherent Cells. Trends Biotechnol 2019; 37:347-357. [DOI: 10.1016/j.tibtech.2018.09.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 09/14/2018] [Accepted: 09/18/2018] [Indexed: 12/13/2022]
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18
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Strain- or Stress-Sensing in Mechanochemical Patterning by the Phytohormone Auxin. Bull Math Biol 2019; 81:3342-3361. [DOI: 10.1007/s11538-019-00600-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 03/12/2019] [Indexed: 01/22/2023]
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19
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From cell shape to cell fate via the cytoskeleton - Insights from the epidermis. Exp Cell Res 2019; 378:232-237. [PMID: 30872138 DOI: 10.1016/j.yexcr.2019.03.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 03/02/2019] [Accepted: 03/08/2019] [Indexed: 12/31/2022]
Abstract
Animal cells exhibit a wide range of shapes that reflect their diverse functions. Cell shape is determined by a balance between internal and external forces and therefore involves the cytoskeleton and its associated adhesion structures. Cell shape dynamics during development and homeostasis are tightly regulated and closely coordinated with cell fate determination. Defects in cell shape are a hallmark of many pathological conditions including cancer and skin diseases. This review highlights the links between cell shape and cell fate in the epidermis, which have been studied for over 40 years both in vitro and in vivo. Briefly discussing seminal experiments showing the strong coupling between keratinocyte cell shape and their fate we primarily focus on recent studies uncovering novel cellular and molecular mechanisms linking epidermal cell shape with cell growth, differentiation, asymmetric division, and delamination.
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20
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Al Tawil E, Monnier A, Nguyen QT, Deschrevel B. Microarchitecture of poly(lactic acid) membranes with an interconnected network of macropores and micropores influences cell behavior. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.06.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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21
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An S. The emerging role of extracellular Ca
2+
in osteo/odontogenic differentiation and the involvement of intracellular Ca
2+
signaling: From osteoblastic cells to dental pulp cells and odontoblasts. J Cell Physiol 2018; 234:2169-2193. [DOI: 10.1002/jcp.27068] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 06/25/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Shaofeng An
- Department of Operative Dentistry and EndodonticsGuanghua School of Stomatology, Hospital of Stomatology, Sun Yat‐sen UniversityGuangzhou China
- Guangdong Province Key Laboratory of StomatologySun Yat‐Sen UniversityGuangzhou China
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22
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Giannini M, Primerano C, Berger L, Giannaccini M, Wang Z, Landi E, Cuschieri A, Dente L, Signore G, Raffa V. Nano-topography: Quicksand for cell cycle progression? NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:2656-2665. [PMID: 30010000 DOI: 10.1016/j.nano.2018.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 06/26/2018] [Accepted: 07/01/2018] [Indexed: 01/01/2023]
Abstract
The 3-D spatial and mechanical features of nano-topography can create alternative environments, which influence cellular response. In this paper, murine fibroblast cells were grown on surfaces characterized by protruding nanotubes. Cells cultured on such nano-structured surface exhibit stronger cellular adhesion compared to control groups, but despite the fact that stronger adhesion is generally believed to promote cell cycle progression, the time cells spend in G1 phase is doubled. This apparent contradiction is solved by confocal microscopy analysis, which shows that the nano-topography inhibits actin stress fiber formation. In turn, this impairs RhoA activation, which is required to suppress the inhibition of cell cycle progression imposed by p21/p27. This finding suggests that the generation of stress fibers, required to impose the homeostatic intracellular tension, rather than cell adhesion/spreading is the limiting factor for cell cycle progression. Indeed, nano-topography could represent a unique tool to inhibit proliferation in adherent well-spread cells.
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Affiliation(s)
| | | | - Liron Berger
- Department of Biology, Università di Pisa, Pisa, Italy.
| | | | - Zhigang Wang
- Institute for Medical Science and Technology, University of Dundee, Dundee, United Kingdom.
| | - Elena Landi
- Department of Biology, Università di Pisa, Pisa, Italy.
| | - Alfred Cuschieri
- Institute for Medical Science and Technology, University of Dundee, Dundee, United Kingdom.
| | - Luciana Dente
- Department of Biology, Università di Pisa, Pisa, Italy.
| | - Giovanni Signore
- Center for Nanotechnology Innovation @NEST, Istituto Italiano di Tecnologia, Pisa, Italy; NEST, Scuola Normale Superiore, and Istituto Nanoscienze-CNR, Pisa, Italy.
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23
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TRPM7 controls mesenchymal features of breast cancer cells by tensional regulation of SOX4. Biochim Biophys Acta Mol Basis Dis 2018; 1864:2409-2419. [DOI: 10.1016/j.bbadis.2018.04.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 04/13/2018] [Accepted: 04/18/2018] [Indexed: 01/04/2023]
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24
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Zhou X, Ma C, Hu B, Tao Y, Wang J, Huang X, Zhao T, Han B, Li H, Liang C, Chen Q, Li F. FoxA2 regulates the type II collagen-induced nucleus pulposus-like differentiation of adipose-derived stem cells by activation of the Shh signaling pathway. FASEB J 2018; 32:fj201800373R. [PMID: 29890089 DOI: 10.1096/fj.201800373r] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Adipose tissue-derived stem cell (ADSC)-based therapy is promising for the treatment of intervertebral disc (IVD) degeneration, but the difficulty in inducing nucleus pulposus (NP)-like differentiation limits its clinical applications. Forkhead box (Fox)-A2 is an essential transcription factor for the formation of a normal NP. We demonstrated that type II collagen stimulates NP-like differentiation of ADSCs, partly by increasing the expression of FoxA2. We constructed FoxA2-overexpressing and -knockdown ADSCs by using lentiviral vectors. FoxA2 overexpression significantly enhanced NP-specific gene expression and the synthesis of glycosaminoglycan and collagen, whereas FoxA2 knockdown decreased NP-like differentiation and the expression of aggrecan and collagen II. The enhanced NP-like differentiation related to FoxA2 overexpression was partially rescued by an Shh signaling pathway inhibitor. In addition, FoxA2 inhibited the expression of Itg-α2 and further promoted NP-like differentiation induced by type II collagen. Furthermore, FoxA2-overexpressing ADSCs combined with type II collagen hydrogels promoted regeneration of degenerated NP in vivo. Our findings suggest that FoxA2 plays an essential role in the NP-like differentiation of ADSCs by activating the Shh signaling pathway.-Zhou, X., Ma, C., Hu, B., Tao, Y., Wang, J., Huang, X., Zhao, T., Han, B., Li, H., Liang, C., Chen, Q., Li, F. FoxA2 regulates the type II collagen-induced nucleus pulposus-like differentiation of adipose-derived stem cells by activation of the Shh signaling pathway.
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Affiliation(s)
- Xiaopeng Zhou
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Chiyuan Ma
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Bin Hu
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Yiqing Tao
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Jingkai Wang
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Xianpeng Huang
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Tengfei Zhao
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Bin Han
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Hao Li
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Chengzhen Liang
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Qixin Chen
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
| | - Fangcai Li
- Department of Orthopedics Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- Department of Orthopedics, Research Institute of Zhejiang University, Hangzhou, China
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25
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Anselme K, Wakhloo NT, Rougerie P, Pieuchot L. Role of the Nucleus as a Sensor of Cell Environment Topography. Adv Healthc Mater 2018; 7:e1701154. [PMID: 29283219 DOI: 10.1002/adhm.201701154] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/06/2017] [Indexed: 12/25/2022]
Abstract
The proper integration of biophysical cues from the cell vicinity is crucial for cells to maintain homeostasis, cooperate with other cells within the tissues, and properly fulfill their biological function. It is therefore crucial to fully understand how cells integrate these extracellular signals for tissue engineering and regenerative medicine. Topography has emerged as a prominent component of the cellular microenvironment that has pleiotropic effects on cell behavior. This progress report focuses on the recent advances in the understanding of the topography sensing mechanism with a special emphasis on the role of the nucleus. Here, recent techniques developed for monitoring the nuclear mechanics are reviewed and the impact of various topographies and their consequences on nuclear organization, gene regulation, and stem cell fate is summarized. The role of the cell nucleus as a sensor of cell-scale topography is further discussed.
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Affiliation(s)
- Karine Anselme
- University of Haute‐AlsaceUniversity of Strasbourg CNRS UMR7361, IS2M 68057 Mulhouse France
| | - Nayana Tusamda Wakhloo
- University of Haute‐AlsaceUniversity of Strasbourg CNRS UMR7361, IS2M 68057 Mulhouse France
| | - Pablo Rougerie
- Institute of Biomedical SciencesFederal University of Rio de Janeiro Rio de Janeiro RJ 21941‐902 Brazil
| | - Laurent Pieuchot
- University of Haute‐AlsaceUniversity of Strasbourg CNRS UMR7361, IS2M 68057 Mulhouse France
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26
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Sprouting angiogenesis induces significant mechanical heterogeneities and ECM stiffening across length scales in fibrin hydrogels. Biomaterials 2018; 162:99-108. [PMID: 29438884 DOI: 10.1016/j.biomaterials.2018.02.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 01/21/2018] [Accepted: 02/03/2018] [Indexed: 11/23/2022]
Abstract
Matrix stiffness is a well-established instructive cue in two-dimensional cell cultures. Its roles in morphogenesis in 3-dimensional (3D) cultures, and the converse effects of cells on the mechanics of their surrounding microenvironment, have been more elusive given the absence of suitable methods to quantify stiffness on a length-scale relevant for individual cell-extracellular matrix (ECM) interactions. In this study, we applied traditional bulk rheology and laser tweezers-based active microrheology to probe mechanics across length scales during the complex multicellular process of capillary morphogenesis in 3D, and further characterized the relative contributions of neovessels and supportive stromal cells to dynamic changes in stiffness over time. Our data show local ECM stiffness was highly heterogeneous around sprouting capillaries, and the variation progressively increased with time. Both endothelial cells and stromal support cells progressively stiffened the ECM, with the changes in bulk properties dominated by the latter. Interestingly, regions with high micro-stiffness did not necessarily correlate with remodeled regions of high ECM density as shown by confocal reflectance microscopy. Collectively, these findings, especially the large spatiotemporal variations in local stiffness around cells during morphogenesis in soft 3D fibrin gels, underscore that characterizing ECM mechanics across length scales. provides an opportunity to attain a deeper mechanobiological understanding of the microenvironment's roles in cell fate and tissue patterning.
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Moerke C, Staehlke S, Rebl H, Finke B, Nebe JB. Restricted cell functions on micropillars are alleviated by surface-nanocoating with amino groups. J Cell Sci 2018; 131:jcs.207001. [PMID: 29122983 DOI: 10.1242/jcs.207001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 11/05/2017] [Indexed: 01/13/2023] Open
Abstract
The topographical and chemical surface features of biomaterials are sensed by the cells, affecting their physiology at the interface. When placed on titanium, we recently discovered osteoblasts attempted caveolae-mediated phagocytosis of the sharp-edged microstructures. This active, energy-consuming process resulted in decreased osteoblastic cell functions (e.g. secretion of extracellular matrix proteins). However, chemical modification with plasma polymerized allylamine (PPAAm) was able to amplify osteoblast adhesion and spreading, resulting in better implant osseointegration in vivo In the present in vitro study, we analyzed whether this plasma polymer nanocoating is able to attenuate the microtopography-induced changes of osteoblast physiology. On PPAAm, we found cells showed a higher cell interaction with the geometrical micropillars by 30 min, and a less distinct reduction in the mRNA expression of collagen type I, osteocalcin and fibronectin after 24 h of cell growth. Interestingly, the cells were more active and sensitive on PPAAm-coated micropillars, and react with a substantial Ca2+ ion mobilization after stimulation with ATP. These results highlight that it is important for osteoblasts to establish cell surface contact for them to perform their functions.
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Affiliation(s)
- Caroline Moerke
- University Medical Center Rostock, Dept. of Cell Biology, Schillingallee 69, 18057 Rostock, Germany
| | - Susanne Staehlke
- University Medical Center Rostock, Dept. of Cell Biology, Schillingallee 69, 18057 Rostock, Germany
| | - Henrike Rebl
- University Medical Center Rostock, Dept. of Cell Biology, Schillingallee 69, 18057 Rostock, Germany
| | - Birgit Finke
- Leibniz-Institute for Plasma Science and Technology e.V. (INP), Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany
| | - J Barbara Nebe
- University Medical Center Rostock, Dept. of Cell Biology, Schillingallee 69, 18057 Rostock, Germany
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28
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Abstract
Nuclear pore complexes tightly regulate nucleo-cytoplasmic transport, controlling the nuclear concentration of several transcription factors. In a recent issue of Cell, Elosegui-Artola et al. (2017) show that nuclear deformation modulates the nuclear entry rates of YAP/TAZ via nuclear pore stretching, clarifying how forces affect gene transcription.
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Affiliation(s)
- Alexis Lomakin
- King's College London, Guy's Campus, Centre for Stem Cells & Regenerative Medicine, 28th Floor, Tower Wing, Great Maze Pond, London SE1 9RT, UK; Institut Curie, PSL Research University, CNRS, UMR 144, 75005 Paris, France; Institut Pierre-Gilles de Gennes, PSL Research University, 75005 Paris, France
| | - Guilherme Nader
- Institut Curie, PSL Research University, CNRS, UMR 144, 75005 Paris, France; Institut Pierre-Gilles de Gennes, PSL Research University, 75005 Paris, France
| | - Matthieu Piel
- Institut Curie, PSL Research University, CNRS, UMR 144, 75005 Paris, France; Institut Pierre-Gilles de Gennes, PSL Research University, 75005 Paris, France.
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29
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Abstract
Fusion of sperm and egg generates a totipotent zygote that develops into a whole organism. Accordingly, the "immortal" germline transmits genetic and epigenetic information to subsequent generations with consequences for human health and disease. In mammals, primordial germ cells (PGCs) originate from peri-gastrulation embryos. While early human embryos are inaccessible for research, in vitro model systems using pluripotent stem cells have provided critical insights into human PGC specification, which differs from that in mice. This might stem from significant differences in early embryogenesis at the morphological and molecular levels, including pluripotency networks. Here, we discuss recent advances and experimental systems used to study mammalian germ cell development. We also highlight key aspects of germ cell disorders, as well as mitochondrial and potentially epigenetic inheritance in humans.
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Affiliation(s)
- Naoko Irie
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, United Kingdom; University of Cambridge, Cambridge, United Kingdom.
| | - Anastasiya Sybirna
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, United Kingdom; University of Cambridge, Cambridge, United Kingdom; Wellcome Trust Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - M Azim Surani
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, United Kingdom; University of Cambridge, Cambridge, United Kingdom.
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30
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Goichberg P. Current Understanding of the Pathways Involved in Adult Stem and Progenitor Cell Migration for Tissue Homeostasis and Repair. Stem Cell Rev Rep 2017; 12:421-37. [PMID: 27209167 DOI: 10.1007/s12015-016-9663-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
With the advancements in the field of adult stem and progenitor cells grows the recognition that the motility of primitive cells is a pivotal aspect of their functionality. There is accumulating evidence that the recruitment of tissue-resident and circulating cells is critical for organ homeostasis and effective injury responses, whereas the pathobiology of degenerative diseases, neoplasm and aging, might be rooted in the altered ability of immature cells to migrate. Furthermore, understanding the biological machinery determining the translocation patterns of tissue progenitors is of great relevance for the emerging methodologies for cell-based therapies and regenerative medicine. The present article provides an overview of studies addressing the physiological significance and diverse modes of stem and progenitor cell trafficking in adult mammalian organs, discusses the major microenvironmental cues regulating cell migration, and describes the implementation of live imaging approaches for the exploration of stem cell movement in tissues and the factors dictating the motility of endogenous and transplanted cells with regenerative potential.
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Affiliation(s)
- Polina Goichberg
- Department Anesthesiology, Perioperative and Pain Medicine, Harvard Medical School, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
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31
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Rolandsson Enes S, Åhrman E, Palani A, Hallgren O, Bjermer L, Malmström A, Scheding S, Malmström J, Westergren-Thorsson G. Quantitative proteomic characterization of lung-MSC and bone marrow-MSC using DIA-mass spectrometry. Sci Rep 2017; 7:9316. [PMID: 28839187 PMCID: PMC5570998 DOI: 10.1038/s41598-017-09127-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/19/2017] [Indexed: 01/17/2023] Open
Abstract
Mesenchymal stromal cells (MSC) are ideal candidates for cell therapies, due to their immune-regulatory and regenerative properties. We have previously reported that lung-derived MSC are tissue-resident cells with lung-specific properties compared to bone marrow-derived MSC. Assessing relevant molecular differences between lung-MSC and bone marrow-MSC is important, given that such differences may impact their behavior and potential therapeutic use. Here, we present an in-depth mass spectrometry (MS) based strategy to investigate the proteomes of lung-MSC and bone marrow-MSC. The MS-strategy relies on label free quantitative data-independent acquisition (DIA) analysis and targeted data analysis using a MSC specific spectral library. We identified several significantly differentially expressed proteins between lung-MSC and bone marrow-MSC within the cell layer (352 proteins) and in the conditioned medium (49 proteins). Bioinformatics analysis revealed differences in regulation of cell proliferation, which was functionally confirmed by decreasing proliferation rate through Cytochrome P450 stimulation. Our study reveals important differences within proteome and matrisome profiles between lung- and bone marrow-derived MSC that may influence their behavior and affect the clinical outcome when used for cell-therapy.
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Affiliation(s)
- Sara Rolandsson Enes
- Department of Experimental Medical Science, Lung Biology Unit, Lund University, 22184, Lund, Sweden.
| | - Emma Åhrman
- Department of Experimental Medical Science, Lung Biology Unit, Lund University, 22184, Lund, Sweden.,Department of Clinical Sciences Lund, Division of Infection Medicine, Lund University, 22184, Lund, Sweden
| | - Anitha Palani
- Department of Experimental Medical Science, Matrix Biology, Lund University, 22184, Lund, Sweden
| | - Oskar Hallgren
- Department of Experimental Medical Science, Lung Biology Unit, Lund University, 22184, Lund, Sweden
| | - Leif Bjermer
- Department of Respiratory Medicine and Allergology, Lund University and Skåne University Hospital, 22184, Lund, Sweden
| | - Anders Malmström
- Department of Experimental Medical Science, Matrix Biology, Lund University, 22184, Lund, Sweden
| | - Stefan Scheding
- Lund Stem Cell Center, Lund University, 22184, Lund, Sweden.,Department of Hematology, Skåne University Hospital, 22184, Lund, Sweden
| | - Johan Malmström
- Department of Clinical Sciences Lund, Division of Infection Medicine, Lund University, 22184, Lund, Sweden
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32
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Duval K, Grover H, Han LH, Mou Y, Pegoraro AF, Fredberg J, Chen Z. Modeling Physiological Events in 2D vs. 3D Cell Culture. Physiology (Bethesda) 2017; 32:266-277. [PMID: 28615311 PMCID: PMC5545611 DOI: 10.1152/physiol.00036.2016] [Citation(s) in RCA: 922] [Impact Index Per Article: 131.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 02/24/2017] [Accepted: 04/05/2017] [Indexed: 02/06/2023] Open
Abstract
Cell culture has become an indispensable tool to help uncover fundamental biophysical and biomolecular mechanisms by which cells assemble into tissues and organs, how these tissues function, and how that function becomes disrupted in disease. Cell culture is now widely used in biomedical research, tissue engineering, regenerative medicine, and industrial practices. Although flat, two-dimensional (2D) cell culture has predominated, recent research has shifted toward culture using three-dimensional (3D) structures, and more realistic biochemical and biomechanical microenvironments. Nevertheless, in 3D cell culture, many challenges remain, including the tissue-tissue interface, the mechanical microenvironment, and the spatiotemporal distributions of oxygen, nutrients, and metabolic wastes. Here, we review 2D and 3D cell culture methods, discuss advantages and limitations of these techniques in modeling physiologically and pathologically relevant processes, and suggest directions for future research.
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Affiliation(s)
- Kayla Duval
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Hannah Grover
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire
| | - Li-Hsin Han
- Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania
| | - Yongchao Mou
- Department of Bioengineering, University of Illinois-Chicago, Rockford, Illinois
| | - Adrian F Pegoraro
- Harvard School of Engineering and Applied Sciences, Cambridge, Massachusetts; and
| | - Jeffery Fredberg
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Zi Chen
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire;
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33
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Forceful patterning in mouse preimplantation embryos. Semin Cell Dev Biol 2017; 71:129-136. [PMID: 28577924 DOI: 10.1016/j.semcdb.2017.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 05/16/2017] [Accepted: 05/21/2017] [Indexed: 12/22/2022]
Abstract
The generation of a functional organism from a single, fertilized ovum requires the spatially coordinated regulation of diverse cell identities. The establishment and precise arrangement of differentiated cells in developing embryos has, historically, been extensively studied by geneticists and developmental biologists. While chemical gradients and genetic regulatory networks are widely acknowledged to play significant roles in embryo patterning, recent studies have highlighted that mechanical forces generated by, and exerted on, embryos are also crucial for the proper control of cell differentiation and morphogenesis. Here we review the most recent findings in murine preimplantation embryogenesis on the roles of cortical tension in the coupling of cell-fate determination and cell positioning in 8-16-cell-stage embryos. These basic principles of mechanochemical coupling in mouse embryos can be applied to other pattern formation phenomena that rely on localized modifications of cell polarity proteins and actin cytoskeletal components and activities.
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34
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Totaro A, Castellan M, Battilana G, Zanconato F, Azzolin L, Giulitti S, Cordenonsi M, Piccolo S. YAP/TAZ link cell mechanics to Notch signalling to control epidermal stem cell fate. Nat Commun 2017; 8:15206. [PMID: 28513598 PMCID: PMC5442321 DOI: 10.1038/ncomms15206] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 03/08/2017] [Indexed: 12/11/2022] Open
Abstract
How the behaviour of somatic stem cells (SCs) is influenced by mechanical signals remains a black-box in cell biology. Here we show that YAP/TAZ regulation by cell shape and rigidity of the extracellular matrix (ECM) dictates a pivotal SC decision: to remain undifferentiated and grow, or to activate a terminal differentiation programme. Notably, mechano-activation of YAP/TAZ promotes epidermal stemness by inhibition of Notch signalling, a key factor for epidermal differentiation. Conversely, YAP/TAZ inhibition by low mechanical forces induces Notch signalling and loss of SC traits. As such, mechano-dependent regulation of YAP/TAZ reflects into mechano-dependent regulation of Notch signalling. Mechanistically, at least in part, this is mediated by YAP/TAZ binding to distant enhancers activating the expression of Delta-like ligands, serving as ‘in cis' inhibitors of Notch. Thus YAP/TAZ mechanotransduction integrates with cell–cell communication pathways for fine-grained orchestration of SC decisions. Notch signalling is a fundamental negative regulator of epidermal stemness. Here, the authors show that cell mechanics through YAP/TAZ activity prevent primary human keratinocytes from differentiating by inhibiting cell-autonomous Notch signals.
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Affiliation(s)
- Antonio Totaro
- Department of Molecular Medicine (DMM), University of Padua School of Medicine, viale Colombo 3, Padua 35126, Italy
| | - Martina Castellan
- Department of Molecular Medicine (DMM), University of Padua School of Medicine, viale Colombo 3, Padua 35126, Italy
| | - Giusy Battilana
- Department of Molecular Medicine (DMM), University of Padua School of Medicine, viale Colombo 3, Padua 35126, Italy
| | - Francesca Zanconato
- Department of Molecular Medicine (DMM), University of Padua School of Medicine, viale Colombo 3, Padua 35126, Italy
| | - Luca Azzolin
- Department of Molecular Medicine (DMM), University of Padua School of Medicine, viale Colombo 3, Padua 35126, Italy
| | - Stefano Giulitti
- Department of Molecular Medicine (DMM), University of Padua School of Medicine, viale Colombo 3, Padua 35126, Italy.,Department of Industrial Engineering (DII), University of Padua, via Marzolo 9, Padua 35131, Italy
| | - Michelangelo Cordenonsi
- Department of Molecular Medicine (DMM), University of Padua School of Medicine, viale Colombo 3, Padua 35126, Italy
| | - Stefano Piccolo
- Department of Molecular Medicine (DMM), University of Padua School of Medicine, viale Colombo 3, Padua 35126, Italy
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35
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Tanaka N, Yamashita T, Sato A, Vogel V, Tanaka Y. Simple agarose micro-confinement array and machine-learning-based classification for analyzing the patterned differentiation of mesenchymal stem cells. PLoS One 2017; 12:e0173647. [PMID: 28380036 PMCID: PMC5381775 DOI: 10.1371/journal.pone.0173647] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 02/22/2017] [Indexed: 11/18/2022] Open
Abstract
The geometrical confinement of small cell colonies gives differential cues to cells sitting at the periphery versus the core. To utilize this effect, for example to create spatially graded differentiation patterns of human mesenchymal stem cells (hMSCs) in vitro or to investigate underpinning mechanisms, the confinement needs to be robust for extended time periods. To create highly repeatable micro-fabricated structures for cellular patterning and high-throughput data mining, we employed here a simple casting method to fabricate more than 800 adhesive patches confined by agarose micro-walls. In addition, a machine learning based image processing software was developed (open code) to detect the differentiation patterns of the population of hMSCs automatically. Utilizing the agarose walls, the circular patterns of hMSCs were successfully maintained throughout 15 days of cell culture. After staining lipid droplets and alkaline phosphatase as the markers of adipogenic and osteogenic differentiation, respectively, the mega-pixels of RGB color images of hMSCs were processed by the software on a laptop PC within several minutes. The image analysis successfully showed that hMSCs sitting on the more central versus peripheral sections of the adhesive circles showed adipogenic versus osteogenic differentiation as reported previously, indicating the compatibility of patterned agarose walls to conventional microcontact printing. In addition, we found a considerable fraction of undifferentiated cells which are preferentially located at the peripheral part of the adhesive circles, even in differentiation-inducing culture media. In this study, we thus successfully demonstrated a simple framework for analyzing the patterned differentiation of hMSCs in confined microenvironments, which has a range of applications in biology, including stem cell biology.
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Affiliation(s)
- Nobuyuki Tanaka
- Quantitative Biology Center (QBiC), RIKEN, Suita, Osaka, Japan
| | - Tadahiro Yamashita
- Laboratory of Applied Mechanobiology, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Asako Sato
- Quantitative Biology Center (QBiC), RIKEN, Suita, Osaka, Japan
| | - Viola Vogel
- Laboratory of Applied Mechanobiology, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Yo Tanaka
- Quantitative Biology Center (QBiC), RIKEN, Suita, Osaka, Japan
- Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, Japan
- * E-mail:
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36
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Fan X, Zhu L, Wang K, Wang B, Wu Y, Xie W, Huang C, Chan BP, Du Y. Stiffness-Controlled Thermoresponsive Hydrogels for Cell Harvesting with Sustained Mechanical Memory. Adv Healthc Mater 2017; 6. [PMID: 28105774 DOI: 10.1002/adhm.201601152] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 11/23/2016] [Indexed: 01/17/2023]
Abstract
Most mechanobiological investigations focused on in situ mechanical regulation of cells on stiffness-controlled substrates with few downstream applications, as it is still challenging to harvest and expand mechanically primed cells by enzymatic digestion (e.g., trypsin) without interrupting cellular mechanical memory between passages. This study develops thermoresponsive hydrogels with controllable stiffness to generate mechanically primed cells with intact mechanical memory for augmented wound healing. No significant cellular property alteration of the fibroblasts primed on thermoresponsive hydrogels with varied stiffness has been observed through thermoresponsive harvesting. When reseeding the harvested cells for further evaluation, softer hydrogels are proven to better sustain the mechanical priming effects compared to rigid tissue culture plate, which indicates that both the stiffness-controlled substrate and thermoresponsive harvesting are required to sustain cellular mechanical memory between passages. Moreover, epigenetics analysis reveals that thermoresponsive harvesting could reduce the rearrangement and loss of chromatin proteins compared to that of trypsinization. In vivo wound healing using mechanically primed fibroblasts shows featured epithelium and sebaceous glands, which indicates augmented skin recovery compared with trypsinized fibroblasts. Thus, the thermoresponsive hydrogel-based cell harvesting system offers a powerful tool to investigate mechanobiology between cell passages and produces abundant cells with tailored mechanical priming properties for cell-based applications.
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Affiliation(s)
- Xingliang Fan
- Department of Biomedical Engineering; School of Medicine; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Tsinghua University; Beijing 100084 China
- Joint Center for Life Sciences; Tsinghua University-Peking University; Beijing 100084 China
| | - Lu Zhu
- Department of Biomedical Engineering; School of Medicine; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Tsinghua University; Beijing 100084 China
- Institute of Medical Equipment; Academy of Military Medical Sciences; Tianjin 300161 China
| | - Ke Wang
- Department of Chemistry; School of Science; Tsinghua University; Beijing 100084 China
| | - Bingjie Wang
- Department of Biomedical Engineering; School of Medicine; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Tsinghua University; Beijing 100084 China
- School of Life Science; Tsinghua University; Beijing 100084 China
| | - Yaozu Wu
- Department of Biomedical Engineering; School of Medicine; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Tsinghua University; Beijing 100084 China
| | - Wei Xie
- Joint Center for Life Sciences; Tsinghua University-Peking University; Beijing 100084 China
- School of Life Science; Tsinghua University; Beijing 100084 China
| | - Chengyu Huang
- Department of Plastic; Reconstructive and Aesthetic Surgery; Beijing Tsinghua Changgung Hospital; Tsinghua University; Beijing 102218 China
| | - Barbara Pui Chan
- Tissue Engineering Laboratory; Department of Mechanical Engineering; The University of Hong Kong; Pokfulam Road Hong Kong Special Administrative Region China
| | - Yanan Du
- Department of Biomedical Engineering; School of Medicine; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Tsinghua University; Beijing 100084 China
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37
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Macdougall LJ, Truong VX, Dove AP. Efficient In Situ Nucleophilic Thiol-yne Click Chemistry for the Synthesis of Strong Hydrogel Materials with Tunable Properties. ACS Macro Lett 2017; 6:93-97. [PMID: 35632898 DOI: 10.1021/acsmacrolett.6b00857] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Synthetic hydrogel materials offer the ability to tune the mechanical properties of the resultant networks by controlling the molecular structure of the polymer precursors. Herein, we demonstrate that the nucleophilic thiol-yne click reaction presents a highly efficient chemistry for forming robust high water content (ca. 90%) hydrogel materials with tunable stiffness and mechanical properties. Remarkably, optimization of the molecular weight and geometry of the poly(ethylene glycol) (PEG) precursors allows access to materials with compressive strength up to 2.4 MPa, which can be repeatedly compressed to >90% stress. Beyond this, we demonstrate the ability to access hydrogels with storage moduli ranging from 0.2 to 7 kPa. Moreover, we also demonstrate that by a simple precursor blending process, we can access intermediate stiffness across this range with minimal changes to the hydrogel structure. These characteristics present the nucleophilic thiol-yne addition as an excellent method for the preparation of hydrogels for use as versatile synthetic biomaterials.
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Affiliation(s)
- Laura J. Macdougall
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Vinh X. Truong
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
| | - Andrew P. Dove
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
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38
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Hunt NC, Hallam D, Karimi A, Mellough CB, Chen J, Steel DHW, Lako M. 3D culture of human pluripotent stem cells in RGD-alginate hydrogel improves retinal tissue development. Acta Biomater 2017; 49:329-343. [PMID: 27826002 DOI: 10.1016/j.actbio.2016.11.016] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 11/01/2016] [Accepted: 11/03/2016] [Indexed: 12/22/2022]
Abstract
No treatments exist to effectively treat many retinal diseases. Retinal pigmented epithelium (RPE) and neural retina can be generated from human embryonic stem cells/induced pluripotent stem cells (hESCs/hiPSCs). The efficacy of current protocols is, however, limited. It was hypothesised that generation of laminated neural retina and/or RPE from hiPSCs/hESCs could be enhanced by three dimensional (3D) culture in hydrogels. hiPSC- and hESC-derived embryoid bodies (EBs) were encapsulated in 0.5% RGD-alginate; 1% RGD-alginate; hyaluronic acid (HA) or HA/gelatin hydrogels and maintained until day 45. Compared with controls (no gel), 0.5% RGD-alginate increased: the percentage of EBs with pigmented RPE foci; the percentage EBs with optic vesicles (OVs) and pigmented RPE simultaneously; the area covered by RPE; frequency of RPE cells (CRALBP+); expression of RPE markers (TYR and RPE65) and the retinal ganglion cell marker, MATH5. Furthermore, 0.5% RGD-alginate hydrogel encapsulation did not adversely affect the expression of other neural retina markers (PROX1, CRX, RCVRN, AP2α or VSX2) as determined by qRT-PCR, or the percentage of VSX2 positive cells as determined by flow cytometry. 1% RGD-alginate increased the percentage of EBs with OVs and/or RPE, but did not significantly influence any other measures of retinal differentiation. HA-based hydrogels had no significant effect on retinal tissue development. The results indicated that derivation of retinal tissue from hESCs/hiPSCs can be enhanced by culture in 0.5% RGD-alginate hydrogel. This RGD-alginate scaffold may be useful for derivation, transport and transplantation of neural retina and RPE, and may also enhance formation of other pigmented, neural or epithelial tissue. STATEMENT OF SIGNIFICANCE The burden of retinal disease is ever growing with the increasing age of the world-wide population. Transplantation of retinal tissue derived from human pluripotent stem cells (PSCs) is considered a promising treatment. However, derivation of retinal tissue from PSCs using defined media is a lengthy process and often variable between different cell lines. This study indicated that alginate hydrogels enhanced retinal tissue development from PSCs, whereas hyaluronic acid-based hydrogels did not. This is the first study to show that 3D culture with a biomaterial scaffold can improve retinal tissue derivation from PSCs. These findings indicate potential for the clinical application of alginate hydrogels for the derivation and subsequent transplantation retinal tissue. This work may also have implications for the derivation of other pigmented, neural or epithelial tissue.
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Affiliation(s)
- Nicola C Hunt
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle NE1 3BZ, UK.
| | - Dean Hallam
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle NE1 3BZ, UK.
| | - Ayesha Karimi
- Cumberland Infirmary, North Cumbria University Hospitals NHS Trust, Carlisle CA2 7HY, UK
| | - Carla B Mellough
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle NE1 3BZ, UK.
| | - Jinju Chen
- School of Mechanical & Systems Engineering, Stephenson Building, Newcastle University, Newcastle upon Tyne, UK.
| | - David H W Steel
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle NE1 3BZ, UK; Sunderland Eye Infirmary, Queen Alexandra Road, Sunderland SR2 9HP, UK.
| | - Majlinda Lako
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle NE1 3BZ, UK.
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39
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Deshpande RS, Spector AA. Modeling Stem Cell Myogenic Differentiation. Sci Rep 2017; 7:40639. [PMID: 28106095 PMCID: PMC5247743 DOI: 10.1038/srep40639] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 12/09/2016] [Indexed: 01/04/2023] Open
Abstract
The process of stem cell myogenesis (transformation into skeletal muscle cells) includes several stages characterized by the expression of certain combinations of myogenic factors. The first part of this process is accompanied by cell division, while the second part is mainly associated with direct differentiation. The mechanical cues are known to enhance stem cell myogenesis, and the paper focuses on the stem cell differentiation under the condition of externally applied strain. The process of stem cell myogenic differentiation is interpreted as the interplay among transcription factors, targeted proteins and strain-generated signaling molecule, and it is described by a kinetic multi-stage model. The model parameters are optimally adjusted by using the available data from the experiment with adipose-derived stem cells subjected to the application of cyclic uniaxial strains of the magnitude of 10%. The modeling results predict the kinetics of the process of myogenic differentiation, including the number of cells in each stage of differentiation and the rates of differentiation from one stage to another for different strains from 4% to 16%. The developed model can help better understand the process of myogenic differentiation and the effects of mechanical cues on stem cell use in muscle therapies.
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Affiliation(s)
- Rajiv S Deshpande
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Alexander A Spector
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205, USA
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40
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From morphogen to morphogenesis and back. Nature 2017; 541:311-320. [DOI: 10.1038/nature21348] [Citation(s) in RCA: 206] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 11/18/2016] [Indexed: 12/11/2022]
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41
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Darnell M, Young S, Gu L, Shah N, Lippens E, Weaver J, Duda G, Mooney D. Substrate Stress-Relaxation Regulates Scaffold Remodeling and Bone Formation In Vivo. Adv Healthc Mater 2017; 6. [PMID: 27995768 DOI: 10.1002/adhm.201601185] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Indexed: 12/28/2022]
Abstract
The rate of stress relaxation of adhesion substrates potently regulates cell fate and function in vitro, and in this study the authors test whether it can regulate bone formation in vivo by implanting alginate gels with differing rates of stress-relaxation carrying human mesenchymal stem cells into rat calvarial defects. After three months, the rats that received fast-relaxing hydrogels (t1/2 ≈ 50 s) show significantly more new bone growth than those that received slow-relaxing, stiffness-matched hydrogels. Strikingly, substantial bone regeneration results from rapidly relaxing hydrogels even in the absence of transplanted cells. Histological analysis reveals that the new bone formed with rapidly relaxing hydrogels is mature and accompanied by extensive matrix remodeling and hydrogel disappearance. This tissue invasion is found to be prominent after just two weeks and the ability of stress relaxation to modulate cell invasion is confirmed with in vitro analysis. These results suggest that substrate stress relaxation can mediate scaffold remodeling and thus tissue formation, giving tissue engineers a new parameter for optimizing bone regeneration.
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Affiliation(s)
- Max Darnell
- School of Engineering and Applied Sciences; Harvard University; Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering; Cambridge MA 02138 USA
| | - Simon Young
- School of Engineering and Applied Sciences; Harvard University; Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering; Cambridge MA 02138 USA
| | - Luo Gu
- School of Engineering and Applied Sciences; Harvard University; Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering; Cambridge MA 02138 USA
| | - Nisarg Shah
- School of Engineering and Applied Sciences; Harvard University; Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering; Cambridge MA 02138 USA
| | - Evi Lippens
- Julius Wolff Institute; Charité-Universitätsmedizin Berlin; 13353 Berlin Germany
- Berlin-Brandenburg Center for Regenerative Therapies; 13353 Berlin Germany
| | - James Weaver
- Wyss Institute for Biologically Inspired Engineering; Cambridge MA 02138 USA
| | - Georg Duda
- Wyss Institute for Biologically Inspired Engineering; Cambridge MA 02138 USA
- Julius Wolff Institute; Charité-Universitätsmedizin Berlin; 13353 Berlin Germany
- Berlin-Brandenburg Center for Regenerative Therapies; 13353 Berlin Germany
| | - David Mooney
- School of Engineering and Applied Sciences; Harvard University; Cambridge MA 02138 USA
- Wyss Institute for Biologically Inspired Engineering; Cambridge MA 02138 USA
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Lourenço T, Grãos M. Modulation of Oligodendrocyte Differentiation by Mechanotransduction. Front Cell Neurosci 2016; 10:277. [PMID: 27965541 PMCID: PMC5126080 DOI: 10.3389/fncel.2016.00277] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 11/18/2016] [Indexed: 01/09/2023] Open
Abstract
Oligodendrocytes (OLs) are responsible for the myelination of axons in the central nervous system (CNS). The differentiation of OLs encompasses several stages, through which cells undergo dramatic biochemical and morphological changes. OL differentiation is modulated by soluble factors (SFs)—such as growth factors and hormones—, known to be essential for each maturation stage. Besides SFs, insoluble factors such as extracellular matrix (ECM) proteins and other microenvironmental elements also play a pivotal role during OL differentiation. Recently, a growing number of studies were published concerning the effect of biophysical properties of the extracellular milieu on OL differentiation and myelination, showing the importance of ECM stiffness and topography, strain forces and spatial constraints. For instance, it was shown in vitro that OL differentiation and maturation is enhanced by substrates within the reported range of stiffness of the brain and that this effect is potentiated by the presence of merosin, whereas the myelination process is influenced by the diameter of axonal-like fibers. In this mini review article, we will discuss the effect of mechanical cues during OL differentiation and the possible molecular mechanisms involved in such regulation.
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Affiliation(s)
- Tânia Lourenço
- Biocant, Technology Transfer AssociationCantanhede, Portugal; Centre for Neuroscience and Cell Biology (CNC), University of CoimbraCoimbra, Portugal
| | - Mário Grãos
- Biocant, Technology Transfer AssociationCantanhede, Portugal; Centre for Neuroscience and Cell Biology (CNC), University of CoimbraCoimbra, Portugal
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Pesce M, Messina E, Chimenti I, Beltrami AP. Cardiac Mechanoperception: A Life-Long Story from Early Beats to Aging and Failure. Stem Cells Dev 2016; 26:77-90. [PMID: 27736363 DOI: 10.1089/scd.2016.0206] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The life-long story of the heart starts concomitantly with primary differentiation events occurring in multipotent progenitors located in the so-called heart tube. This initially tubular structure starts a looping process, which leads to formation of the final four-chambered heart with a primary contribution of geometric and position-associated cell sensing. While this establishes the correct patterning of the final cardiac structure, it also provides feedbacks to fundamental cellular machineries controlling proliferation and differentiation, thus ensuring a coordinated restriction of cell growth and a myocyte terminal differentiation. Novel evidences provided by embryological and cell engineering studies have clarified the relevance of mechanics-supported position sensing for the correct recognition of cell fate inside developing embryos and multicellular aggregates. One of the main components of this pathway, the Hippo-dependent signal transduction machinery, is responsible for cell mechanics intracellular transduction with important consequences for gene transcription and cell growth control. Being the Hippo pathway also directly connected to stress responses and altered metabolism, it is tempting to speculate that permanent alterations of mechanosensing may account for modifying self-renewal control in tissue homeostasis. In the present contribution, we translate these concepts to the aging process and the failing of the human heart, two pathophysiologic conditions that are strongly affected by stress responses and altered metabolism.
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Affiliation(s)
- Maurizio Pesce
- 1 Tissue Engineering Research Unit, Centro Cardiologico Monzino, IRCCS , Milan, Italy
| | - Elisa Messina
- 2 Department of Pediatric Cardiology, "Sapienza" University , Rome, Italy
| | - Isotta Chimenti
- 3 Department of Medical Surgical Science and Biotechnology, "Sapienza" University , Rome, Italy
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Pereira JFS, Awatade NT, Loureiro CA, Matos P, Amaral MD, Jordan P. The third dimension: new developments in cell culture models for colorectal research. Cell Mol Life Sci 2016; 73:3971-89. [PMID: 27147463 PMCID: PMC11108567 DOI: 10.1007/s00018-016-2258-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 04/20/2016] [Accepted: 04/28/2016] [Indexed: 12/23/2022]
Abstract
Cellular models are important tools in various research areas related to colorectal biology and associated diseases. Herein, we review the most widely used cell lines and the different techniques to grow them, either as cell monolayer, polarized two-dimensional epithelia on membrane filters, or as three-dimensional spheres in scaffold-free or matrix-supported culture conditions. Moreover, recent developments, such as gut-on-chip devices or the ex vivo growth of biopsy-derived organoids, are also discussed. We provide an overview on the potential applications but also on the limitations for each of these techniques, while evaluating their contribution to provide more reliable cellular models for research, diagnostic testing, or pharmacological validation related to colon physiology and pathophysiology.
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Affiliation(s)
- Joana F S Pereira
- Departamento de Genética Humana, Instituto Nacional de Saúde Doutor Ricardo Jorge, Avenida Padre Cruz, 1649-016, Lisbon, Portugal
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Nikhil T Awatade
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Cláudia A Loureiro
- Departamento de Genética Humana, Instituto Nacional de Saúde Doutor Ricardo Jorge, Avenida Padre Cruz, 1649-016, Lisbon, Portugal
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Paulo Matos
- Departamento de Genética Humana, Instituto Nacional de Saúde Doutor Ricardo Jorge, Avenida Padre Cruz, 1649-016, Lisbon, Portugal
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Margarida D Amaral
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Peter Jordan
- Departamento de Genética Humana, Instituto Nacional de Saúde Doutor Ricardo Jorge, Avenida Padre Cruz, 1649-016, Lisbon, Portugal.
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal.
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Pederson T, King MC, Marko JF. Forces, fluctuations, and self-organization in the nucleus. Mol Biol Cell 2016; 26:3915-9. [PMID: 26543199 PMCID: PMC4710223 DOI: 10.1091/mbc.e15-06-0357] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
We address several processes and domains in the nucleus wherein holding the perspective of physics either reveals a conundrum or is likely to enable progress.
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Affiliation(s)
- Thoru Pederson
- Program in Cell and Developmental Dynamics, Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605
| | - Megan C King
- Department of Cell Biology, Yale School of Medicine, New Haven, CT 06520
| | - John F Marko
- Department of Molecular Biosciences and Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208
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Ye K, Cao L, Li S, Yu L, Ding J. Interplay of Matrix Stiffness and Cell-Cell Contact in Regulating Differentiation of Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21903-13. [PMID: 26600563 DOI: 10.1021/acsami.5b09746] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Stem cells are capable of sensing and responding to the mechanical properties of extracellular matrixes (ECMs). It is well-known that, while osteogenesis is promoted on the stiff matrixes, adipogenesis is enhanced on the soft ones. Herein, we report an "abnormal" tendency of matrix-stiffness-directed stem cell differentiation. Well-defined nanoarrays of cell-adhesive arginine-glycine-aspartate (RGD) peptides were modified onto the surfaces of persistently nonfouling poly(ethylene glycol) (PEG) hydrogels to achieve controlled specific cell adhesion and simultaneously eliminate nonspecific protein adsorption. Mesenchymal stem cells were cultivated on the RGD-nanopatterned PEG hydrogels with the same RGD nanospacing but different hydrogel stiffnesses and incubated in the induction medium to examine the effect of matrix stiffness on osteogenic and adipogenic differentiation extents. When stem cells were kept at a low density during the induction period, the differentiation tendency was consistent with the previous reports in the literature; however, both lineage commitments were favored on the stiff matrices at a high cell density. We interpreted such a complicated stiffness effect at a high cell density in two-dimensional culture as the interplay of matrix stiffness and cell-cell contact. As a result, this study strengthens the essence of the stiffness effect and highlights the combinatory effects of ECM cues and cell cues on stem cell differentiation.
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Affiliation(s)
- Kai Ye
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University , Shanghai 200433, China
| | - Luping Cao
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University , Shanghai 200433, China
| | - Shiyu Li
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University , Shanghai 200433, China
| | - Lin Yu
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University , Shanghai 200433, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University , Shanghai 200433, China
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Foolen J, Shiu JY, Mitsi M, Zhang Y, Chen CS, Vogel V. Full-Length Fibronectin Drives Fibroblast Accumulation at the Surface of Collagen Microtissues during Cell-Induced Tissue Morphogenesis. PLoS One 2016; 11:e0160369. [PMID: 27564551 PMCID: PMC5001707 DOI: 10.1371/journal.pone.0160369] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 07/18/2016] [Indexed: 12/03/2022] Open
Abstract
Generating and maintaining gradients of cell density and extracellular matrix (ECM) components is a prerequisite for the development of functionality of healthy tissue. Therefore, gaining insights into the drivers of spatial organization of cells and the role of ECM during tissue morphogenesis is vital. In a 3D model system of tissue morphogenesis, a fibronectin-FRET sensor recently revealed the existence of two separate fibronectin populations with different conformations in microtissues, i.e. 'compact and adsorbed to collagen' versus 'extended and fibrillar' fibronectin that does not colocalize with the collagen scaffold. Here we asked how the presence of fibronectin might drive this cell-induced tissue morphogenesis, more specifically the formation of gradients in cell density and ECM composition. Microtissues were engineered in a high-throughput model system containing rectangular microarrays of 12 posts, which constrained fibroblast-populated collagen gels, remodeled by the contractile cells into trampoline-shaped microtissues. Fibronectin's contribution during the tissue maturation process was assessed using fibronectin-knockout mouse embryonic fibroblasts (Fn-/- MEFs) and floxed equivalents (Fnf/f MEFs), in fibronectin-depleted growth medium with and without exogenously added plasma fibronectin (full-length, or various fragments). In the absence of full-length fibronectin, Fn-/- MEFs remained homogenously distributed throughout the cell-contracted collagen gels. In contrast, in the presence of full-length fibronectin, both cell types produced shell-like tissues with a predominantly cell-free compacted collagen core and a peripheral surface layer rich in cells. Single cell assays then revealed that Fn-/- MEFs applied lower total strain energy on nanopillar arrays coated with either fibronectin or vitronectin when compared to Fnf/f MEFs, but that the presence of exogenously added plasma fibronectin rescued their contractility. While collagen decoration of single fibronectin fibers enhanced the non-persistent migration of both Fnf/f and Fn-/- MEFs, the migration speed was increased for Fn-/- MEFs on plasma fibronectin fibers compared to Fnf/f MEFs. In contrast, the average speed was the same for all cells on collagen-coated Fn fibers. A Fn-FRET sensor revealed that fibronectin on average was more extended on the microtissue surface compared to fibronectin in the core. Gradients of collagen-to-fibronectin ratios and of the fraction of collagen-adsorbed to stretched fibrillar fibronectin conformations might thereby provide critical cell migration cues. This study highlights a dominant role for fibronectin in tissue morphogenesis and the development of tissue heterogeneities.
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Affiliation(s)
- Jasper Foolen
- Laboratory of Applied Mechanobiology, Department of Health Sciences and Technology, ETH Zurich, Vladimir-Prelog-Weg 4, Zurich, Switzerland
| | - Jau-Ye Shiu
- Laboratory of Applied Mechanobiology, Department of Health Sciences and Technology, ETH Zurich, Vladimir-Prelog-Weg 4, Zurich, Switzerland
| | - Maria Mitsi
- Laboratory of Applied Mechanobiology, Department of Health Sciences and Technology, ETH Zurich, Vladimir-Prelog-Weg 4, Zurich, Switzerland
| | - Yang Zhang
- Laboratory of Applied Mechanobiology, Department of Health Sciences and Technology, ETH Zurich, Vladimir-Prelog-Weg 4, Zurich, Switzerland
| | - Christopher S. Chen
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts, United States of America
| | - Viola Vogel
- Laboratory of Applied Mechanobiology, Department of Health Sciences and Technology, ETH Zurich, Vladimir-Prelog-Weg 4, Zurich, Switzerland
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48
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Regmi S, Jeong JH. Superiority of three-dimensional stem cell clusters over monolayer culture: An archetype to biological application. Macromol Res 2016. [DOI: 10.1007/s13233-016-4107-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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49
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Xin T, Greco V, Myung P. Hardwiring Stem Cell Communication through Tissue Structure. Cell 2016; 164:1212-1225. [PMID: 26967287 DOI: 10.1016/j.cell.2016.02.041] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Indexed: 12/24/2022]
Abstract
Adult stem cells across diverse organs self-renew and differentiate to maintain tissue homeostasis. How stem cells receive input to preserve tissue structure and function largely relies on their communication with surrounding cellular and non-cellular elements. As such, how tissues are organized and patterned not only reflects organ function, but also inherently hardwires networks of communication between stem cells and their environment to direct tissue homeostasis and injury repair. This review highlights how different methods of stem cell communication reflect the unique organization and function of diverse tissues.
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Affiliation(s)
- Tianchi Xin
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Valentina Greco
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA; Department of Dermatology, Yale Cancer Center, Yale School of Medicine, New Haven, Connecticut 06510, USA; Department of Cell Biology, Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut 06510, USA; Yale Cancer Center, Yale School of Medicine, New Haven, Connecticut 06510, USA.
| | - Peggy Myung
- Department of Dermatology, Yale Cancer Center, Yale School of Medicine, New Haven, Connecticut 06510, USA; Yale Cancer Center, Yale School of Medicine, New Haven, Connecticut 06510, USA.
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50
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Steed E, Faggianelli N, Roth S, Ramspacher C, Concordet JP, Vermot J. klf2a couples mechanotransduction and zebrafish valve morphogenesis through fibronectin synthesis. Nat Commun 2016; 7:11646. [PMID: 27221222 PMCID: PMC4894956 DOI: 10.1038/ncomms11646] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 04/15/2016] [Indexed: 12/23/2022] Open
Abstract
The heartbeat and blood flow signal to endocardial cell progenitors through mechanosensitive proteins that modulate the genetic program controlling heart valve morphogenesis. To date, the mechanism by which mechanical forces coordinate tissue morphogenesis is poorly understood. Here we use high-resolution imaging to uncover the coordinated cell behaviours leading to heart valve formation. We find that heart valves originate from progenitors located in the ventricle and atrium that generate the valve leaflets through a coordinated set of endocardial tissue movements. Gene profiling analyses and live imaging reveal that this reorganization is dependent on extracellular matrix proteins, in particular on the expression of fibronectin1b. We show that blood flow and klf2a, a major endocardial flow-responsive gene, control these cell behaviours and fibronectin1b synthesis. Our results uncover a unique multicellular layering process leading to leaflet formation and demonstrate that endocardial mechanotransduction and valve morphogenesis are coupled via cellular rearrangements mediated by fibronectin synthesis.
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Affiliation(s)
- Emily Steed
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67404, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch 67404, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67404, France
- Université de Strasbourg, Illkirch 67404, France
| | - Nathalie Faggianelli
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67404, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch 67404, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67404, France
- Université de Strasbourg, Illkirch 67404, France
| | - Stéphane Roth
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67404, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch 67404, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67404, France
- Université de Strasbourg, Illkirch 67404, France
| | - Caroline Ramspacher
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67404, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch 67404, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67404, France
- Université de Strasbourg, Illkirch 67404, France
| | - Jean-Paul Concordet
- Muséum National d'Histoire Naturelle, 75231 Paris Cedex 05, France
- CNRS UMR 7196, 75231 Paris Cedex 05, France
- INSERM U1154, 75231 Paris Cedex 05, France
| | - Julien Vermot
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch 67404, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch 67404, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch 67404, France
- Université de Strasbourg, Illkirch 67404, France
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