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Sequeira DB, Diogo P, Gomes BPFA, Peça J, Santos JMM. Scaffolds for Dentin-Pulp Complex Regeneration. MEDICINA (KAUNAS, LITHUANIA) 2023; 60:7. [PMID: 38276040 PMCID: PMC10821321 DOI: 10.3390/medicina60010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/24/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024]
Abstract
Background and Objectives: Regenerative dentistry aims to regenerate the pulp-dentin complex and restore those of its functions that have become compromised by pulp injury and/or inflammation. Scaffold-based techniques are a regeneration strategy that replicate a biological environment by utilizing a suitable scaffold, which is considered crucial for the successful regeneration of dental pulp. The aim of the present review is to address the main characteristics of the different scaffolds, as well as their application in dentin-pulp complex regeneration. Materials and Methods: A narrative review was conducted by two independent reviewers to answer the research question: What type of scaffolds can be used in dentin-pulp complex regeneration? An electronic search of PubMed, EMBASE and Cochrane library databases was undertaken. Keywords including "pulp-dentin regeneration scaffold" and "pulp-dentin complex regeneration" were used. To locate additional reports, reference mining of the identified papers was undertaken. Results: A wide variety of biomaterials is already available for tissue engineering and can be broadly categorized into two groups: (i) natural, and (ii) synthetic, scaffolds. Natural scaffolds often contain bioactive molecules, growth factors, and signaling cues that can positively influence cell behavior. These signaling molecules can promote specific cellular responses, such as cell proliferation and differentiation, crucial for effective tissue regeneration. Synthetic scaffolds offer flexibility in design and can be tailored to meet specific requirements, such as size, shape, and mechanical properties. Moreover, they can be functionalized with bioactive molecules, growth factors, or signaling cues to enhance their biological properties and the manufacturing process can be standardized, ensuring consistent quality for widespread clinical use. Conclusions: There is still a lack of evidence to determine the optimal scaffold composition that meets the specific requirements and complexities needed for effectively promoting dental pulp tissue engineering and achieving successful clinical outcomes.
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Affiliation(s)
- Diana B. Sequeira
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal (P.D.)
- Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal;
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
| | - Patrícia Diogo
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal (P.D.)
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
| | - Brenda P. F. A. Gomes
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas—UNICAMP, Piracicaba 13083-970, Brazil;
| | - João Peça
- Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal;
- Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, 3000-456 Coimbra, Portugal
| | - João Miguel Marques Santos
- Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal (P.D.)
- Center for Innovation and Research in Oral Sciences (CIROS), Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR) and Center of Investigation on Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
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2
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Cui Y, Liu W, Zhao S, Zhao Y, Dai J. Advances in Microgravity Directed Tissue Engineering. Adv Healthc Mater 2023; 12:e2202768. [PMID: 36893386 DOI: 10.1002/adhm.202202768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/28/2023] [Indexed: 03/11/2023]
Abstract
Tissue engineering aims to generate functional biological substitutes to repair, sustain, improve, or replace tissue function affected by disease. With the rapid development of space science, the application of simulated microgravity has become an active topic in the field of tissue engineering. There is a growing body of evidence demonstrating that microgravity offers excellent advantages for tissue engineering by modulating cellular morphology, metabolism, secretion, proliferation, and stem cell differentiation. To date, there have been many achievements in constructing bioartificial spheroids, organoids, or tissue analogs with or without scaffolds in vitro under simulated microgravity conditions. Herein, the current status, recent advances, challenges, and prospects of microgravity related to tissue engineering are reviewed. Current simulated-microgravity devices and cutting-edge advances of microgravity for biomaterials-dependent or biomaterials-independent tissue engineering to offer a reference for guiding further exploration of simulated microgravity strategies to produce engineered tissues are summarized and discussed.
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Affiliation(s)
- Yi Cui
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, 100081, China
| | - Weiyuan Liu
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
| | - Shuaijing Zhao
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
| | - Yannan Zhao
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
| | - Jianwu Dai
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100080, China
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3
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Hu N, Li W, Jiang W, Wen J, Gu S. Creating a Microenvironment to Give Wings to Dental Pulp Regeneration-Bioactive Scaffolds. Pharmaceutics 2023; 15:pharmaceutics15010158. [PMID: 36678787 PMCID: PMC9861529 DOI: 10.3390/pharmaceutics15010158] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/13/2022] [Accepted: 12/23/2022] [Indexed: 01/05/2023] Open
Abstract
Dental pulp and periapical diseases make patients suffer from acute pain and economic loss. Although root canal therapies, as demonstrated through evidence-based medicine, can relieve symptoms and are commonly employed by dentists, it is still difficult to fully restore a dental pulp's nutrition, sensory, and immune-regulation functions. In recent years, researchers have made significant progress in tissue engineering to regenerate dental pulp in a desired microenvironment. With breakthroughs in regenerative medicine and material science, bioactive scaffolds play a pivotal role in creating a suitable microenvironment for cell survival, proliferation, and differentiation, following dental restoration and regeneration. This article focuses on current challenges and novel perspectives about bioactive scaffolds in creating a microenvironment to promote dental pulp regeneration. We hope our readers will gain a deeper understanding and new inspiration of dental pulp regeneration through our summary.
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Affiliation(s)
- Nan Hu
- Department of Endodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Weiping Li
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
- Department of Oral and Maxillofacial Head & Neck Oncology, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Wentao Jiang
- Department of Endodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Jin Wen
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
- Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai 200125, China
- Correspondence: (J.W.); (S.G.)
| | - Shensheng Gu
- Department of Endodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
- Correspondence: (J.W.); (S.G.)
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Azaryan E, Hanafi-Bojd MY, Alemzadeh E, Emadian Razavi F, Naseri M. Effect of PCL/nHAEA nanocomposite to osteo/odontogenic differentiation of dental pulp stem cells. BMC Oral Health 2022; 22:505. [DOI: 10.1186/s12903-022-02527-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/21/2022] [Indexed: 11/17/2022] Open
Abstract
Abstract
Purpose
The green synthesis of nanoparticles has recently opened up a new route in material production. The aim of this study was to evaluate the effect of nanohydroxyapatite (nHA) synthesized from Elaeagnus angustifolia (EA) extract in polycaprolactone (PCL) nanofibers (PCL/nHAEA) to odontogenic differentiation of dental pulp stem cells (DPSCs) and their potential applications for dentin tissue engineering.
Methods
Green synthesis of nHA via EA extract (nHAEA) was done by the sol–gel technique. Then electrospun nanocomposites containing of PCL blended with nHA (P/nHA) and nHAEA (P/nHAEA) were fabricated, and the characterization was evaluated via X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and the contact angle. The morphology of nanofibers and the cell adhesion capacity of DPSCs on nanofibers were evaluated using SEM. Cytocompatibility was assessed by MTT. Osteo/odontogenic differentiation ability of the nanocomposites were assessed using alkaline phosphatase (ALP) activity, alizarin red S (ARS) staining, and quantitative real-time polymerase chain reaction (qPCR) technique.
Results
Viability and adhesion capacity of DPSCs were higher on P/nHAEA nanofibers than PCL and P/nHA nanofibers. ARS assay, ALP activity, and qPCR analysis findings confirmed that the nHAEA blended nanofibrous scaffolds substantially increased osteo/odontogenic differentiation of DPSCs.
Conclusion
PCL/nHAEA nanocomposites had a noticeable effect on the odontogenic differentiation of DPSCs and may help to improve cell-based dentin regeneration therapies in the future.
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Long R, Shi L, He P, Tian J, Wang S, Zheng J. 3D cell culture based on artificial cells and hydrogel under microgravity for bottom-up microtissue constructs. Front Bioeng Biotechnol 2022; 10:1056652. [DOI: 10.3389/fbioe.2022.1056652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 10/31/2022] [Indexed: 11/16/2022] Open
Abstract
The use of hydrogel as a filling medium to recombine dispersed microencapsulated cells to form an embedded gel-cell microcapsule complex is a new idea based on bottom-up tissue construction, which is benefit for cell distribution and of great significance for tissue construction research in vitro. In this experiment, sodium alginate and chitosan were used as the main materials, rat normal liver cell BRL-3A was used as the model cell to prepare “artificial cells”. Silkworm pupa was used as raw material to extract silk fibroin solution, which was prepared by ultrasound to be the silk fibroin gel; silk fibroin hydrogel-microencapsulated hepatocyte embedded complex was then prepared by using silk fibroin gel as filling medium; the complex was cultured under three modes (static, shaking, and 3D microgravity), and the tissue forming ability of rat hepatocytes was investigated. The results showed that the microgravity culture condition can enhance the cell proliferation and promote the formation of cell colonies in the microcapsules; silk fibroin can form an embedded gel-cell microcapsule complex with microencapsulated cells, which provided mechanical support for the structure of the composite. We hope that this bottom-up construction system will have potential applications in the fields of cell culture and tissue construction.
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Mochi F, Scatena E, Rodriguez D, Ginebra MP, Del Gaudio C. Scaffold-based bone tissue engineering in microgravity: potential, concerns and implications. NPJ Microgravity 2022; 8:45. [PMID: 36309540 PMCID: PMC9617896 DOI: 10.1038/s41526-022-00236-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 10/12/2022] [Indexed: 11/09/2022] Open
Abstract
One of humanity's greatest challenges is space exploration, which requires an in-depth analysis of the data continuously collected as a necessary input to fill technological gaps and move forward in several research sectors. Focusing on space crew healthcare, a critical issue to be addressed is tissue regeneration in extreme conditions. In general, it represents one of the hottest and most compelling goals of the scientific community and the development of suitable therapeutic strategies for the space environment is an urgent need for the safe planning of future long-term manned space missions. Osteopenia is a commonly diagnosed disease in astronauts due to the physiological adaptation to altered gravity conditions. In order to find specific solutions to bone damage in a reduced gravity environment, bone tissue engineering is gaining a growing interest. With the aim to critically investigate this topic, the here presented review reports and discusses bone tissue engineering scenarios in microgravity, from scaffolding to bioreactors. The literature analysis allowed to underline several key points, such as the need for (i) biomimetic composite scaffolds to better mimic the natural microarchitecture of bone tissue, (ii) uniform simulated microgravity levels for standardized experimental protocols to expose biological materials to the same testing conditions, and (iii) improved access to real microgravity for scientific research projects, supported by the so-called democratization of space.
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Affiliation(s)
- Federico Mochi
- E. Amaldi Foundation, Via del Politecnico snc, 00133, Rome, Italy
| | - Elisa Scatena
- E. Amaldi Foundation, Via del Politecnico snc, 00133, Rome, Italy
| | - Daniel Rodriguez
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 10, 08019, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Av. Eduard Maristany 10, 08019, Barcelona, Spain
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 10, 08019, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Av. Eduard Maristany 10, 08019, Barcelona, Spain.,Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, 08028, Barcelona, Spain
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7
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Guo Y, Xue Y, Wang P, Cui Z, Cao J, Liu S, Yu Q, Zeng Q, Zhu D, Xie M, Zhang J, Li Z, Liu H, Zhong J, Chen J. Muse cell spheroids have therapeutic effect on corneal scarring wound in mice and tree shrews. Sci Transl Med 2021; 12:12/562/eaaw1120. [PMID: 32967971 DOI: 10.1126/scitranslmed.aaw1120] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/02/2019] [Accepted: 06/23/2020] [Indexed: 12/16/2022]
Abstract
Stem cell therapy holds promises for treating corneal scarring. Here, we use multilineage-differentiating stress-enduring (Muse) cells to study their differentiation and therapeutic potential for treating corneal injury. Muse cells were isolated from lipoaspirate, which presented biphenotype properties of both pluripotent stem cells and some mesenchymal stem cells. Muse cells expanded by about 100-fold from the initial seeding cell number to Muse spheroids with the maintenance of the Muse cell phenotype and high cell viability at 33 days by static spheroid culture. We revealed that Muse spheroids were activated by the dynamic rotary cell culture system (RCCS), as characterized by increased stemness, improved activity, and enhanced adherence. Gene and protein expression of the pluripotent markers OCT3/4, SOX2, and NANOG and of the proliferation marker KI67 in Muse spheroids cultured under RCCS were higher than those in the static group. These activated Muse spheroids enabled ready differentiation into corneal stromal cells (CSCs) expressing characteristic marker genes and proteins. Furthermore, implantation of Muse cells-differentiated CSCs (Muse-CSCs) laden assembled with two orthogonally stacked stretched compressed collagen (cell-SCC) in mouse and tree shrew wounded corneas prevented the formation of corneal scarring, increased corneal re-epithelialization and nerve regrowth, and reduced the severity of corneal inflammation and neovascularization. cell-SCC retained the capacity to suppress corneal scarring after long-distance cryopreserved transport. Thus, Muse cell therapy is a promising avenue for developing therapeutics for treating corneal scarring.
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Affiliation(s)
- Yonglong Guo
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China.,Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China.,Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China
| | - Yunxia Xue
- Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China
| | - Peiyuan Wang
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Zekai Cui
- Aier Eye Institute, 18th floor, the New century building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Jixing Cao
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Shiwei Liu
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Quan Yu
- Centric Laboratory, Medical College, Jinan University, Guangzhou, China
| | - Qiaolang Zeng
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Deliang Zhu
- Key Laboratory of Optoelectronic Information and Sensing Technologies, Guangdong Higher Educational Institutes, Jinan University, Guangzhou 510632, China
| | - Mengyuan Xie
- Key Laboratory of Optoelectronic Information and Sensing Technologies, Guangdong Higher Educational Institutes, Jinan University, Guangzhou 510632, China
| | - Jun Zhang
- Key Laboratory of Optoelectronic Information and Sensing Technologies, Guangdong Higher Educational Institutes, Jinan University, Guangzhou 510632, China
| | - Zhijie Li
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China.,Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China.,Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China
| | - Hongwei Liu
- Department of Plastic Surgery, First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Jingxiang Zhong
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Jiansu Chen
- Ophthalmology Department, First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China. .,Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China.,Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China.,Aier Eye Institute, 18th floor, the New century building, #198 Furong Middle Road, Changsha, Hunan 410015, China
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8
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Zhivodernikov I, Ratushnyy A, Buravkova L. Simulated Microgravity Remodels Extracellular Matrix of Osteocommitted Mesenchymal Stromal Cells. Int J Mol Sci 2021; 22:ijms22115428. [PMID: 34063955 PMCID: PMC8196606 DOI: 10.3390/ijms22115428] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/17/2021] [Accepted: 05/17/2021] [Indexed: 01/08/2023] Open
Abstract
The extracellular matrix (ECM) is the principal structure of bone tissue. Long-term spaceflights lead to osteopenia, which may be a result of the changes in composition as well as remodeling of the ECM by osteogenic cells. To elucidate the cellular effects of microgravity, human mesenchymal stromal cells (MSCs) and their osteocommitted progeny were exposed to simulated microgravity (SMG) for 10 days using random positioning machine (RPM). After RPM exposure, an imbalance of MSC collagen/non-collagen ratio at the expense of a decreased level of collagenous proteins was detected. At the same time, the secretion of proteases (cathepsin A, cathepsin D, MMP3) was increased. No significant effects of SMG on the expression of stromal markers and cell adhesion molecules on the MSC surface were noted. Upregulation of COL11A1, CTNND1, TIMP3, and TNC and downregulation of HAS1, ITGA3, ITGB1, LAMA3, MMP1, and MMP11 were detected in RPM exposed MSCs. ECM-associated transcriptomic changes were more pronounced in osteocommitted progeny. Thus, 10 days of SMG provokes a decrease in the collagenous components of ECM, probably due to the decrease in collagen synthesis and activation of proteases. The presented data demonstrate that ECM-associated molecules of both native and osteocommitted MSCs may be involved in bone matrix reorganization during spaceflight.
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Zhang W, Shen J, Zhang S, Liu X, Pan S, Li Y, Zhang L, He L, Niu Y. Silencing integrin α6 enhances the pluripotency-differentiation transition in human dental pulp stem cells. Oral Dis 2021; 28:711-722. [PMID: 33404136 DOI: 10.1111/odi.13771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 12/21/2020] [Accepted: 12/28/2020] [Indexed: 01/09/2023]
Abstract
OBJECTIVES Although integrins have been shown to be associated with proliferation and differentiation in some stem cells, the regulatory effect of integrin α6 (ITGα6) on the human dental pulp stem cells (hDPSCs) has not been reported. Here, we detected the roles of ITGα6 in hDPSCs. MATERIALS AND METHODS Attached to Cytodex 3 microcarriers, hDPSCs grown under stimulated microgravity (SMG) or conventional culture conditions were measured the proliferation and different gene expression. Further, ITGα6 was silenced in hDPSCs, and its effect on proliferation, differentiation, and cytoskeletal organization was analyzed. RESULTS SMG conditions increased the number of Ki67-positive hDPSCs and progression into S phase of cell cycle. WB analysis showed the expression of ITGα6 was upregulated in hDPSCs under SMG conditions. Knockdown of ITGα6 decreased the expression of stemness markers, CD105 and STRO-1 in hDPSCs, but promoted the osteogenic and odontogenic differentiation by increased ALP expression and Alizarin Red nodules. Moreover, RNA-seq demonstrated that RHO/ROCK signaling pathway upregulated silencing ITGα6-hDPSCs. Treatment with Y-27632 inhibited the effect of ITGα6 depletion on hDPSCs stemness, rearranged the cytoskeleton, promoted the pluripotency, proliferation ability, and inhibited the differentiation. CONCLUSION ITGα6 promotes hDPSCs stemness via inhibiting RHO/ROCK and restoring cytoskeleton.
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Affiliation(s)
- Weiwei Zhang
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Endodontics, School of Stomatology, Harbin Medical University, Harbin, China
| | - Jingling Shen
- Institute of Life Science, Wenzhou University, Wenzhou, China
| | - Shuang Zhang
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Endodontics, School of Stomatology, Harbin Medical University, Harbin, China
| | - Xu Liu
- Department of Stomatology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shuang Pan
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Endodontics, School of Stomatology, Harbin Medical University, Harbin, China
| | - Yanping Li
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Endodontics, School of Stomatology, Harbin Medical University, Harbin, China
| | - Lin Zhang
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Endodontics, School of Stomatology, Harbin Medical University, Harbin, China
| | - Lina He
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Endodontics, School of Stomatology, Harbin Medical University, Harbin, China
| | - Yumei Niu
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Endodontics, School of Stomatology, Harbin Medical University, Harbin, China
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10
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Avitabile E, Fusco L, Minardi S, Orecchioni M, Zavan B, Yilmazer A, Rauner M, Pippia P, Tasciotti E, Delogu LG. Bioinspired Scaffold Action Under the Extreme Physiological Conditions of Simulated Space Flights: Osteogenesis Enhancing Under Microgravity. Front Bioeng Biotechnol 2020; 8:722. [PMID: 32733868 PMCID: PMC7362936 DOI: 10.3389/fbioe.2020.00722] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 06/08/2020] [Indexed: 12/24/2022] Open
Abstract
Prolonged exposure to microgravity (MG) during long-duration space flights is known to induce severe dysregulation of osteoblast functions connected to a significant bone loss, similar to the condition induced by osteoporosis. Hence, we here present MG as a promising model to challenge the effectiveness of new scaffolds designed for bone regeneration in counteracting bone loss. To this end, we carried out an integrative study aimed to evaluate, in the extreme condition of Random Positioning Machine-simulated MG, the osteoinductive potential of nanocrystalline magnesium-doped hydroxyapatite/type I collagen composite scaffold (MHA/Coll), that we previously demonstrated to be an excellent tool for bone tissue engineering. Initially, to test the osteoinductive properties of our bioinspired-scaffold, MHA/Coll structure was fully characterized under MG condition and compared to its static counterpart. Human bone marrow-derived mesenchymal stem cells were used to investigate the scaffold biocompatibility and ability to promote osteogenic differentiation after long-duration exposure to MG (up to 21 days). The results demonstrate that the nanostructure of MHA/Coll scaffold can alleviate MG-induced osteoblast dysfunction, promoting cell differentiation along the osteogenic lineage, with a consequent reduction in the expression of the surface markers CD29, CD44, and CD90. Moreover, these findings were corroborated by the ability of MHA/Coll to induce the expression of genes linked to osteogenesis, including alkaline phosphatase and osteocalcin. This study confirmed MHA/Coll capabilities in promoting osteogenesis even in extreme long-term condition of MG, suggesting MG as an effective challenging model to apply in future studies to validate the ability of advanced scaffolds to counteract bone loss, facilitating their application in translational Regenerative Medicine and Tissue Engineering.
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Affiliation(s)
| | - Laura Fusco
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste, Italy.,Fondazione Istituto di Ricerca pediatrica Cittá della Speranza, Padua, Italy.,Cancer Research Department, Sidra Medicine, Doha, Qatar
| | - Silvia Minardi
- Center for Musculoskeletal Regeneration, Houston Methodist Research Institute, Houston, TX, United States
| | - Marco Orecchioni
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Barbara Zavan
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy.,Maria Cecilia Hospital, GVM Care & Research, Ravenna, Italy
| | - Acelya Yilmazer
- Department of Biomedical Engineering, Ankara University, Ankara, Turkey.,Stem Cell Institute, Ankara University, Ankara, Turkey
| | - Martina Rauner
- Department of Medicine III, Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Proto Pippia
- Department of Physiological, Biochemical and Cellular Science, University of Sassari, Sassari, Italy
| | - Ennio Tasciotti
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX, United States
| | - Lucia Gemma Delogu
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy.,Fondazione Istituto di Ricerca pediatrica Cittá della Speranza, Padua, Italy.,Department of Biomedical Science, University of Padua, Padua, Italy
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Chen Z, Yang X, Bi G, Liang J, Hu Z, Zhao M, Li M, Lu T, Zheng Y, Sui Q, Yang Y, Zhan C, Jiang W, Wang Q, Tan L. Ligand-receptor interaction atlas within and between tumor cells and T cells in lung adenocarcinoma. Int J Biol Sci 2020; 16:2205-2219. [PMID: 32549766 PMCID: PMC7294944 DOI: 10.7150/ijbs.42080] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 05/02/2020] [Indexed: 12/31/2022] Open
Abstract
Purpose: Lung adenocarcinoma (LUAD) is the leading cause of cancer-related deaths worldwide. Although tumor cell-T cell interactions are known to play a fundamental role in promoting tumor progression, these interactions have not been explored in LUAD. Methods: The 10x genomics single-cell RNA sequencing (scRNA-seq) and gene expression data of LUAD patients were obtained from ArrayExpress, TCGA, and GEO databases. scRNA-seq data were analyzed and infiltrating tumor cells, epithelial cells, and T cells were identified in the tumor microenvironment. Differentially expressed ligand-receptor pairs were identified in tumor cells/normal epithelial cells and tumor T cells/non-tumor T cells based on corresponding scRNA-seq and gene expression data, respectively. These important interactions inside/across cancer cells and T cells in LUAD were systematically analyzed. Furthermore, a valid prognostic machine-learning model based on ligand-receptor interactions was built to predict the prognosis of LUAD patients. Flow cytometry and qRT-PCR were performed to validate the significantly differently expressed ligand-receptor pairs. Results: Overall, 39,692 cells in scRNA-seq data were included in our study after quality filtering. A total of 65 ligand-receptor pairs (17 upregulated and 48 downregulated), including LAMB1-ITGB1, CD70-CD27, and HLA-B-LILRB2, and 96 ligand-receptor pairs (41 upregulated and 55 downregulated), including CCL5-CCR5, SELPLG-ITGB2, and CXCL13-CXCR5, were identified in LUAD cancer cells and T cells, respectively. To explore the crosstalk between cancer cells and T cells, 114 ligand-receptor pairs, including 11 ligand-receptor pair genes that could significantly affect survival outcomes, were identified in our research. A machine-learning model was established to accurately predict the prognosis of LUAD patients and ITGB4, CXCR5, and MET were found to play an important role in prognosis in our model. Flow cytometry and qRT-PCR analyses indicated the reliability of our study. Conclusion: Our study revealed functionally significant interactions within and between cancer cells and T cells. We believe these observations will improve our understanding of potential mechanisms of tumor microenvironment contributions to cancer progression and help identify potential targets for immunotherapy in the future.
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Affiliation(s)
- Zhencong Chen
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Xiaodong Yang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Guoshu Bi
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Jiaqi Liang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Zhengyang Hu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Mengnan Zhao
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Ming Li
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Tao Lu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Yuansheng Zheng
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Qihai Sui
- Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yong Yang
- Department of Thoracic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215001, China
| | - Cheng Zhan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Wei Jiang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Qun Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
| | - Lijie Tan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Shanghai, 200032, China
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Stem Cell Culture Under Simulated Microgravity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1298:105-132. [PMID: 32424490 DOI: 10.1007/5584_2020_539] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Challenging environment of space causes several pivotal alterations in living systems, especially due to microgravity. The possibility of simulating microgravity by ground-based systems provides research opportunities that may lead to the understanding of in vitro biological effects of microgravity by eliminating the challenges inherent to spaceflight experiments. Stem cells are one of the most prominent cell types, due to their self-renewal and differentiation capabilities. Research on stem cells under simulated microgravity has generated many important findings, enlightening the impact of microgravity on molecular and cellular processes of stem cells with varying potencies. Simulation techniques including clinostat, random positioning machine, rotating wall vessel and magnetic levitation-based systems have improved our knowledge on the effects of microgravity on morphology, migration, proliferation and differentiation of stem cells. Clarification of the mechanisms underlying such changes offers exciting potential for various applications such as identification of putative therapeutic targets to modulate stem cell function and stem cell based regenerative medicine.
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Tuguzbaeva G, Yue E, Chen X, He L, Li X, Ju J, Qin Y, Pavlov V, Lu Y, Jia W, Bai Y, Niu Y, Yang B. PEP06 polypeptide 30 is a novel cluster-dissociating agent inhibiting α v integrin/FAK/Src signaling in oral squamous cell carcinoma cells. Acta Pharm Sin B 2019; 9:1163-1173. [PMID: 31867162 PMCID: PMC6900557 DOI: 10.1016/j.apsb.2019.10.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/09/2019] [Accepted: 10/11/2019] [Indexed: 12/30/2022] Open
Abstract
Collectively migrating tumor cells have been recently implicated in enhanced metastasis of epithelial malignancies. In oral squamous cell carcinoma (OSCC), αv integrin is a crucial mediator of multicellular clustering and collective movement in vitro; however, its contribution to metastatic spread remains to be addressed. According to the emerging therapeutic concept, dissociation of tumor clusters into single cells could significantly suppress metastasis-seeding ability of carcinomas. This study aimed to investigate the anti-OSCC potential of novel endostatin-derived polypeptide PEP06 as a cluster-dissociating therapeutic agent in vitro. Firstly, we found marked enrichment of αv integrin in collectively invading multicellular clusters in human OSCCs. Our study revealed that metastatic progression of OSCC was associated with augmented immunostaining of αv integrin in cancerous lesions. Following PEP06 treatment, cell clustering on fibronectin, migration, multicellular aggregation, anchorage-independent survival and colony formation of OSCC were significantly inhibited. Moreover, PEP06 suppressed αv integrin/FAK/Src signaling in OSCC cells. PEP06-induced loss of active Src and E-cadherin from cell–cell contacts contributed to diminished collective migration of OSCC in vitro. Overall, these results suggest that PEP06 polypeptide 30 inhibiting αv integrin/FAK/Src signaling and disrupting E-cadherin-based intercellular junctions possesses anti-metastatic potential in OSCC by acting as a cluster-dissociating therapeutic agent.
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14
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Sun X, Meng L, Qiao W, Yang R, Gao Q, Peng Y, Bian Z. Vascular endothelial growth factor A/Vascular endothelial growth factor receptor 2 axis promotes human dental pulp stem cell migration via the FAK/PI3K/Akt and p38 MAPK signalling pathways. Int Endod J 2019; 52:1691-1703. [PMID: 31267530 DOI: 10.1111/iej.13179] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 06/27/2019] [Indexed: 01/04/2023]
Abstract
AIM To investigate the effects of vascular endothelial growth factor A (VEGFA) and the underlying molecular mechanisms on the migration of human dental pulp stem cells (hDPSCs). METHODOLOGY The expression of VEGFA in inflammatory pulp tissue and lipopolysaccharide (LPS)-stimulated dental pulp cells was examined by immunofluorescence staining and qRT-PCR. The migration of hDPSCs was detected using transwell migration and wound healing assays. The activation of FAK, PI3K, Akt and p38 signalling was evaluated by Western blot analysis. Silence RNA (siRNA) technology was utilized to knockdown the expression of VEGFR1 (Flt-1) and VEGFR2 (Flk-1/KDR). PF573228 (inhibitor of FAK), LY294002 (inhibitor of PI3K), SB203580 (inhibitor of p38) and SU5416 (inhibitor of VEGFR2) were employed to investigate the effect of VEGFA on the migratory mechanism of hDPSCs. Data were analysed statistically using the Student's t-test or one-way ANOVA. RESULTS The expression levels of VEGFA in inflammatory pulp tissue in vivo and LPS-stimulated dental pulp cells in vitro were significantly greater than those in the control groups (P < 0.05). Vascular endothelial growth factor A promoted the migration of hDPSCs in a concentration-dependent manner. Several signalling pathways, including FAK, PI3K, Akt and p38, were activated by VEGFA in a dose- and time-dependent manner in hDPSCs. The VEGFA-induced migration of hDPSCs was significantly inhibited with drug inhibitors such as PF573228, LY294002, SB203580 or SU5416 (P < 0.05). These signalling pathways activated by VEGFA stimulation were significantly suppressed by pre-treatment with inhibitor of VEGFR2 (SU5416) or transfection with siRNA of VRGFR2 (P < 0.05) but not VEGFR1 siRNA. CONCLUSIONS Vascular endothelial growth factor A/VEGFR2 axis promoted the migration of hDPSCs via the FAK/PI3K/Akt and p38 MAPK signalling pathways. These findings reveal a novel molecular mechanism for cell migration of hDPSCs, which may contribute to the remodelling of pulp tissue and dentine.
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Affiliation(s)
- X Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - L Meng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - W Qiao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - R Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Q Gao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Y Peng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Z Bian
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
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Jung C, Kim S, Sun T, Cho YB, Song M. Pulp-dentin regeneration: current approaches and challenges. J Tissue Eng 2019; 10:2041731418819263. [PMID: 30728935 PMCID: PMC6351713 DOI: 10.1177/2041731418819263] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 11/21/2018] [Indexed: 01/03/2023] Open
Abstract
Regenerative endodontic procedures for immature permanent teeth with apical periodontitis confer biological advantages such as tooth homeostasis, enhanced immune defense system, and a functional pulp-dentin complex, in addition to clinical advantages such as the facilitation of root development. Currently, this procedure is recognized as a paradigm shift from restoration using materials to regenerate pulp-dentin tissues. Many studies have been conducted with regard to stem/progenitor cells, scaffolds, and biomolecules, associated with pulp tissue engineering. However, preclinical and clinical studies have evidently revealed several drawbacks in the current clinical approach to revascularization that may lead to unfavorable outcomes. Therefore, our review examines the challenges encountered under clinical conditions and summarizes current research findings in an attempt to provide direction for transition from basic research to clinical practice.
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Affiliation(s)
- Chanyong Jung
- Department of Dentistry, Aerospace Medical Center, Cheongju, Korea.,Department of Conservative Dentistry, College of Dentistry, Dankook University, Cheonan, Korea
| | - Sangwan Kim
- Department of Conservative Dentistry, College of Dentistry, Dankook University, Cheonan, Korea
| | - Taeuk Sun
- Department of Conservative Dentistry, College of Dentistry, Dankook University, Cheonan, Korea
| | - Yong-Bum Cho
- Department of Conservative Dentistry, College of Dentistry, Dankook University, Cheonan, Korea
| | - Minju Song
- Department of Conservative Dentistry, College of Dentistry, Dankook University, Cheonan, Korea
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16
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Kopp S, Krüger M, Feldmann S, Oltmann H, Schütte A, Schmitz B, Bauer J, Schulz H, Saar K, Huebner N, Wehland M, Nassef MZ, Melnik D, Meltendorf S, Infanger M, Grimm D. Thyroid cancer cells in space during the TEXUS-53 sounding rocket mission - The THYROID Project. Sci Rep 2018; 8:10355. [PMID: 29985426 PMCID: PMC6037793 DOI: 10.1038/s41598-018-28695-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 06/28/2018] [Indexed: 12/11/2022] Open
Abstract
Human follicular thyroid cancer cells (FTC-133) were sent to space via a sounding rocket during the TEXUS-53 mission to determine the impact of short-term microgravity on these cells. To enable cell culture and fixation in real microgravity, an automated experiment container (EC) was constructed. In order to ensure safe cell culture, cell-chambers consisting of polycarbonate (PC) material were used. They were highly biocompatible as proved by measuring cell survival using Annexin V flow cytometry. In the follow-up experiment, FTC-133 cells were sent to space via a sounding rocket and were fixed before and after the microgravity (µg) phase with RNAlater. In addition, cells were tested for reactions on hypergravity (hyper-g) as much as 18 g to determine whether worst case acceleration during launch can have an influence on the cells. We investigated genes belonging to biological processes such as cytoskeleton, cell adhesion, tumor growth, angiogenesis and apoptosis. Pathway analyses revealed central functions of VEGFA and EGF. EGF upregulates aspartate beta-hydroxylase (ASPH) which is influencing CASP3. Hyper-g induced a significant up-regulation of TUBB1, VIM, RDX, CAV1, VEGFA and BCL2. FTC-133 cells grown in an automated EC exposed to µg revealed moderate gene expression changes indicating their survival in orbit.
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Affiliation(s)
- Sascha Kopp
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, D-39120, Magdeburg, Germany
| | - Marcus Krüger
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, D-39120, Magdeburg, Germany
| | - Stefan Feldmann
- Airbus Defence and Space GmbH, Airbus-Allee 1, D-28199, Bremen, Germany
| | - Hergen Oltmann
- Airbus Defence and Space GmbH, Airbus-Allee 1, D-28199, Bremen, Germany
| | - Andreas Schütte
- Airbus Defence and Space GmbH, Airbus-Allee 1, D-28199, Bremen, Germany
| | - Burkhard Schmitz
- Airbus Defence and Space GmbH, Airbus-Allee 1, D-28199, Bremen, Germany
| | - Johann Bauer
- Max-Planck Institute of Biochemistry, D-82152, Martinsried, Germany
| | - Herbert Schulz
- Cologne Center for Genomics, University of Cologne, D-50931, Cologne, Germany
| | - Kathrin Saar
- Max-Delbrück-Center for Molecular Medicine, D-13092, Berlin-Buch, Germany
| | - Norbert Huebner
- Max-Delbrück-Center for Molecular Medicine, D-13092, Berlin-Buch, Germany
| | - Markus Wehland
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, D-39120, Magdeburg, Germany
| | - Mohamed Zakaria Nassef
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, D-39120, Magdeburg, Germany
| | - Daniela Melnik
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, D-39120, Magdeburg, Germany
| | - Stefan Meltendorf
- Experimental Pediatrics and Neonatology, University Hospital, Otto-von-Guericke University Magdeburg, Leipziger Str. 44, D-39120, Magdeburg, Germany
| | - Manfred Infanger
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, D-39120, Magdeburg, Germany
| | - Daniela Grimm
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, D-39120, Magdeburg, Germany. .,Department of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, DK-8000, Aarhus C, Denmark. .,Gravitational Biology and Translational Regenerative Medicine, Faculty of Medicine and Mechanical Engineering, Otto-von-Guericke-University Magdeburg, D-39120, Magdeburg, Germany.
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17
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Itoh Y, Sasaki JI, Hashimoto M, Katata C, Hayashi M, Imazato S. Pulp Regeneration by 3-dimensional Dental Pulp Stem Cell Constructs. J Dent Res 2018; 97:1137-1143. [PMID: 29702010 DOI: 10.1177/0022034518772260] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Dental pulp regeneration therapy for the pulpless tooth has attracted recent attention, and clinical trial studies are underway with the tissue engineering approach. However, there remain many concerns, including the extended period for regenerating the dental pulp. In addition, the use of scaffolds increases the risk of inflammation and infection. To establish a basic technology for novel dental pulp regenerative therapy that allows transplant of pulp-like tissue, we attempted to fabricate scaffold-free 3-dimensional (3D) cell constructs composed of dental pulp stem cells (DPSCs). Furthermore, we assessed viability of these 3D DPSC constructs for dental pulp regeneration through in vitro and in vivo studies. For the in vitro study, we obtained 3D DPSC constructs by shaping sheet-like aggregates of DPSCs with a thermoresponsive hydrogel. DPSCs within constructs remained viable even after prolonged culture; furthermore, 3D DPSC constructs possessed a self-organization ability necessary to serve as a transplant tissue. For the in vivo study, we filled the human tooth root canal with DPSC constructs and implanted it subcutaneously into immunodeficient mice. We found that pulp-like tissues with rich blood vessels were formed within the human root canal 6 wk after implantation. Histologic analyses revealed that transplanted DPSCs differentiated into odontoblast-like mineralizing cells at sites in contact with dentin; furthermore, human CD31-positive endothelial cells were found at the center of regenerated tissue. Thus, the self-organizing ability of 3D DPSC constructs was active within the pulpless root canal in vivo. In addition, blood vessel-rich pulp-like tissues can be formed with DPSCs without requiring scaffolds or growth factors. The technology established in this study allows us to prepare DPSC constructs with variable sizes and shapes; therefore, transplantation of DPSC constructs shows promise for regeneration of pulpal tissue in the pulpless tooth.
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Affiliation(s)
- Y Itoh
- 1 Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Osaka, Japan.,2 Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - J I Sasaki
- 1 Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - M Hashimoto
- 3 Institute of Dental Research, Osaka Dental University, Osaka, Japan
| | - C Katata
- 1 Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Osaka, Japan.,2 Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - M Hayashi
- 2 Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - S Imazato
- 1 Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Osaka, Japan
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18
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Macdonald AA. Aberrant growth of maxillary canine teeth in male babirusa (genus Babyrousa ). C R Biol 2018; 341:245-255. [DOI: 10.1016/j.crvi.2018.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/16/2018] [Accepted: 04/20/2018] [Indexed: 11/28/2022]
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19
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Shi L, Fu S, Fahim S, Pan S, Lina H, Mu X, Niu Y. TNF-alpha stimulation increases dental pulp stem cell migration in vitro through integrin alpha-6 subunit upregulation. Arch Oral Biol 2016; 75:48-54. [PMID: 28043012 DOI: 10.1016/j.archoralbio.2016.12.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 09/19/2016] [Accepted: 12/14/2016] [Indexed: 01/09/2023]
Abstract
OBJECTIVE The dissemination of stem cells into tissues requiring inflammatory and reparative response is fundamentally dependent upon their chemotactic migration. Expression of TNF-α is up regulated in inflamed pulps. Dental pulp cells are also known to express integrin α6 subunit. Expression of integrin subunit α6 has been linked to the acquisition of migratory potential in a wide variety of cell types in both pathological and physiological capacities. Therefore, in this study we examined the effects of a pleiotropic cytokine TNF-α on the migration of hDPSCs and investigated its relationship with expression of integrin α6 in hDPSCs during chemotactic migration. DESIGN hDPSC cultures were established. Protein expression profile of α6 integrin subunit was determined. Effect of exogenous TNF-α (50ng/mL) on hDPSCs' migration potential was evaluated by transwell inserts and in vitro scratch assay. Upregulation/downregulation of TNF-α mediated migration was assayed in presence/absence of integrin α6 respectively. To suppress integrin α6 expression, cells were transfected with integrin α6 siRNA and then cell migration and cytoskeletal changes were evaluated. RESULTS Our results showed significant increase of hDPSCs' migration after stimulation with TNF-α. By knockdown of integrin α6, which is upregulated by TNF-α, we observed a decrease in the TNF-α directed chemotaxis of hDPSCs. CONCLUSION In this study, we show that activation of integrin α6 brought about by TNF-α led to an increase in migratory activity in DPSCs in vitro thus describing a novel association between a cytokine TNF-α and α6 chain of an adhesion receptor integrin in regulating migration of hDPSCs.
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Affiliation(s)
- Lei Shi
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China; Oral Biomedical Research Institute of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Shanqi Fu
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Sidra Fahim
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Shuang Pan
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China; Oral Biomedical Research Institute of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - He Lina
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Xiaodan Mu
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
| | - Yumei Niu
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China; Oral Biomedical Research Institute of Harbin Medical University, 143 Yiman Street, Nangang District, Harbin, 150001, China.
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20
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Li Y, He L, Pan S, Zhang L, Zhang W, Yi H, Niu Y. Three-dimensional simulated microgravity culture improves the proliferation and odontogenic differentiation of dental pulp stem cell in PLGA scaffolds implanted in mice. Mol Med Rep 2016; 15:873-878. [PMID: 28000851 DOI: 10.3892/mmr.2016.6042] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 11/17/2016] [Indexed: 11/06/2022] Open
Abstract
Tooth regeneration through stem cell-based therapy is a promising treatment for tooth decay and loss. Human dental pulp stem cells (hDPSCs) have been widely identified as the stem cells with the most potential for tooth tissue regeneration. However, the culture of hDPSCs in vitro for tissue engineering is challenging, as cells may proliferate slowly or/and differentiate poorly in vivo. Dynamic three‑dimensional (3D) simulated microgravity (SMG) created using the rotary cell culture system is considered to an effective tool, which contributes to several cell functions. Thus, the present study aimed to investigate the effect of dynamic 3D SMG culture on the proliferation and odontogenic differentiation abilities of hDPSCs in poly (lactic‑co‑glycolic acid) (PLGA) scaffolds in nude mice. The hDPSCs on PLGA scaffolds were maintained separately in the 3D SMG culture system and static 3D cultures with osteogenic medium for 7 days in vitro. Subsequently, the cell‑PLGA complexes were implanted subcutaneously on the backs of nude mice for 4 weeks. The results of histological and immunohistochemical examinations of Ki‑67, type I collagen, dentin sialoprotein and DMP‑1 indicated that the proliferation and odontogenic differentiation abilities of the hDPSCs prepared in the 3D SMG culture system were higher, compared with those prepared in the static culture system. These findings suggested that dynamic 3D SMG culture likely contributes to tissue engineering by improving the proliferation and odontogenic differentiation abilities of hDPSCs in vivo.
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Affiliation(s)
- Yanping Li
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Lina He
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Shuang Pan
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Lin Zhang
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Weiwei Zhang
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Hong Yi
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Yumei Niu
- Department of Endodontics, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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21
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Salerno-Goncalves R, Fasano A, Sztein MB. Development of a Multicellular Three-dimensional Organotypic Model of the Human Intestinal Mucosa Grown Under Microgravity. J Vis Exp 2016. [PMID: 27500889 DOI: 10.3791/54148] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Because cells growing in a three-dimensional (3-D) environment have the potential to bridge many gaps of cell cultivation in 2-D environments (e.g., flasks or dishes). In fact, it is widely recognized that cells grown in flasks or dishes tend to de-differentiate and lose specialized features of the tissues from which they were derived. Currently, there are mainly two types of 3-D culture systems where the cells are seeded into scaffolds mimicking the native extracellular matrix (ECM): (a) static models and (b) models using bioreactors. The first breakthrough was the static 3-D models. 3-D models using bioreactors such as the rotating-wall-vessel (RWV) bioreactors are a more recent development. The original concept of the RWV bioreactors was developed at NASA's Johnson Space Center in the early 1990s and is believed to overcome the limitations of static models such as the development of hypoxic, necrotic cores. The RWV bioreactors might circumvent this problem by providing fluid dynamics that allow the efficient diffusion of nutrients and oxygen. These bioreactors consist of a rotator base that serves to support and rotate two different formats of culture vessels that differ by their aeration source type: (1) Slow Turning Lateral Vessels (STLVs) with a co-axial oxygenator in the center, or (2) High Aspect Ratio Vessels (HARVs) with oxygenation via a flat, silicone rubber gas transfer membrane. These vessels allow efficient gas transfer while avoiding bubble formation and consequent turbulence. These conditions result in laminar flow and minimal shear force that models reduced gravity (microgravity) inside the culture vessel. Here we describe the development of a multicellular 3-D organotypic model of the human intestinal mucosa composed of an intestinal epithelial cell line and primary human lymphocytes, endothelial cells and fibroblasts cultured under microgravity provided by the RWV bioreactor.
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Affiliation(s)
| | - Alessio Fasano
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children
| | - Marcelo B Sztein
- Center for Vaccine Development, Department of Pediatrics, University of Maryland School of Medicine
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Bauer J, Bussen M, Wise P, Wehland M, Schneider S, Grimm D. Searching the literature for proteins facilitates the identification of biological processes, if advanced methods of analysis are linked: a case study on microgravity-caused changes in cells. Expert Rev Proteomics 2016; 13:697-705. [DOI: 10.1080/14789450.2016.1197775] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Johann Bauer
- Informationsvermittlung, Max-Planck Institute for Biochemistry, Martinsried, Germany
| | - Markus Bussen
- Lifescience, Elsevier Information System GmbH, Frankfurt am Main, Germany
| | - Petra Wise
- Hematology/Oncology, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA, USA
| | - Markus Wehland
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Sabine Schneider
- Informationsvermittlung, Max-Planck Institute for Biochemistry, Martinsried, Germany
| | - Daniela Grimm
- Clinic for Plastic, Aesthetic and Hand Surgery, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
- Institute of Biomedicine, Pharmacology, Aarhus University, Aarhus, Denmark
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