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Liu Y, Chen P, Zhou T, Zeng J, Liu Z, Wang R, Xu Y, Yin W, Rong M. Co-culture of STRO1 + human gingival mesenchymal stem cells and human umbilical vein endothelial cells in 3D spheroids: enhanced in vitro osteogenic and angiogenic capacities. Front Cell Dev Biol 2024; 12:1378035. [PMID: 38770153 PMCID: PMC11102987 DOI: 10.3389/fcell.2024.1378035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 04/22/2024] [Indexed: 05/22/2024] Open
Abstract
Stem cell spheroid is a promising graft substitute for bone tissue engineering. Spheroids obtained by 3D culture of STRO1+ Gingival Mesenchymal Stem Cells (sGMSCs) (sGMSC spheroids, GS) seldom express angiogenic factors, limiting their angiogenic differentiation in vivo. This study introduced a novel stem cell spheroid with osteogenic and angiogenic potential through 3D co-culture of sGMSCs and Human Umbilical Vein Endothelial Cells (HUVECs) (sGMSC/HUVEC spheroids, GHS). GHS with varying seeding ratios of sGMSCs to HUVECs (GHR) were developed. Cell fusion within the GHS system was observed via immunofluorescence. Calcein-AM/PI staining and chemiluminescence assay indicated cellular viability within the GHS. Furthermore, osteogenic and angiogenic markers, including ALP, OCN, RUNX2, CD31, and VEGFA, were quantified and compared with the control group comprising solely of sGMSCs (GS). Incorporating HUVECs into GHS extended cell viability and stability, initiated the expression of angiogenic factors CD31 and VEGFA, and upregulated the expression of osteogenic factors ALP, OCN, and RUNX2, especially when GHS with a GHR of 1:1. Taken together, GHS, derived from the 3D co-culture of sGMSCs and HUVECs, enhanced osteogenic and angiogenic capacities in vitro, extending the application of cell therapy in bone tissue engineering.
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Affiliation(s)
- Yushan Liu
- Department of Periodontology and Implantology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Pei Chen
- Department of Periodontology and Implantology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Tengfei Zhou
- Department of Periodontology and Implantology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Jincheng Zeng
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Key Laboratory of Medical Bioactive Molecular Developmental and Translational Research, Guangdong Medical University, Dongguan, China
| | - Ziyi Liu
- Department of Periodontology and Implantology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Ruijie Wang
- Department of Periodontology and Implantology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Yiwei Xu
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory, CAS Key Laboratory of Regenerative Biology, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Science, Guangzhou, China
| | - Wuwei Yin
- Department of Periodontology and Implantology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Mingdeng Rong
- Department of Periodontology and Implantology, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
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Wang J, Zhao Z, Yang K, Bai Y. Research progress in cell therapy for oral diseases: focus on cell sources and strategies to optimize cell function. Front Bioeng Biotechnol 2024; 12:1340728. [PMID: 38515628 PMCID: PMC10955105 DOI: 10.3389/fbioe.2024.1340728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 02/23/2024] [Indexed: 03/23/2024] Open
Abstract
In recent years, cell therapy has come to play an important therapeutic role in oral diseases. This paper reviews the active role of mesenchymal stem cells, immune cell sources, and other cells in oral disorders, and presents data supporting the role of cell therapy in oral disorders, including bone and tooth regeneration, oral mucosal disorders, oral soft tissue defects, salivary gland dysfunction, and orthodontic tooth movement. The paper will first review the progress of cell optimization strategies for oral diseases, including the use of hormones in combination with stem cells, gene-modified regulatory cells, epigenetic regulation of cells, drug regulation of cells, cell sheets/aggregates, cell-binding scaffold materials and hydrogels, nanotechnology, and 3D bioprinting of cells. In summary, we will focus on the therapeutic exploration of these different cell sources in oral diseases and the active application of the latest cell optimization strategies.
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Affiliation(s)
| | | | | | - Yuxing Bai
- Department of Orthodontics, School of Stomatology, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
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Nie M, Zhang P, Pathak JL, Wang X, Wu Y, Yang J, Shen Y. Photodynamic therapy in periodontitis: A narrative review. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2024; 40:e12946. [PMID: 38288767 DOI: 10.1111/phpp.12946] [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: 09/01/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 02/01/2024]
Abstract
BACKGROUND Periodontitis, a chronic infectious disease, is primarily caused by a dysbiotic microbiome, leading to the destruction of tooth-supporting tissues and tooth loss. Photodynamic therapy (PDT), which combines excitation light with photosensitizers (PS) and oxygen to produce antibacterial reactive oxygen species, is emerging as a promising adjuvant treatment for periodontitis. METHODS This review focuses on studies examining the antibacterial effects of PDT against periodontal pathogens. It also explores the impact of PDT on various aspects of periodontal health, including periodontal immune cells, human gingival fibroblasts, gingival collagen, inflammatory mediators, cytokines in the periodontium, vascular oxidative stress, vascular behavior, and alveolar bone health. Clinical trials assessing the types of PSs and light sources used in PDT, as well as its effects on clinical and immune factors in gingival sulcus fluid and the bacterial composition of dental plaque, are discussed. RESULTS The findings indicate that PDT is effective in reducing periodontal pathogens and improving markers of periodontal health. It has shown positive impacts on periodontal immune response, tissue integrity, and alveolar bone preservation. Clinical trials have demonstrated improvements in periodontal health and alterations in the microbial composition of dental plaque when PDT is used alongside conventional treatments. CONCLUSIONS PDT offers a promising adjunctive treatment for periodontitis, with benefits in bacterial reduction, tissue healing, and immune modulation. This article highlights the potential of PDT in periodontal therapy and emphasizes the need for further research to refine its clinical application and efficacy.
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Affiliation(s)
- Min Nie
- Department of Periodontics, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
- Department of Periodontics, State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Peipei Zhang
- Department of Oral Medicine, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
| | - Janak Lal Pathak
- Department of Periodontics, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaoyu Wang
- Department of Periodontics, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yafei Wu
- Department of Periodontics, State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jingmei Yang
- Department of Periodontics, State Key Laboratory of Oral Disease & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuqin Shen
- Department of Periodontics, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
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Fadl A, Leask A. Hiding in Plain Sight: Human Gingival Fibroblasts as an Essential, Yet Overlooked, Tool in Regenerative Medicine. Cells 2023; 12:2021. [PMID: 37626831 PMCID: PMC10453328 DOI: 10.3390/cells12162021] [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: 07/01/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
Adult human gingival fibroblasts (HGFs), the most abundant cells in the oral cavity, are essential for maintaining oral homeostasis. Compared with other tissues, adult oral mucosal wounds heal regeneratively, without scarring. Relative to fibroblasts from other locations, HGFs are relatively refractory to myofibroblast differentiation, immunomodulatory, highly regenerative, readily obtained via minimally invasive procedures, easily and rapidly expanded in vitro, and highly responsive to growth factors and cytokines. Consequently, HGFs might be a superior, yet perhaps underappreciated, source of adult mesenchymal progenitor cells to use in tissue engineering and regeneration applications, including the treatment of fibrotic auto-immune connective tissue diseases such as scleroderma. Herein, we highlight in vitro and translational studies that have investigated the regenerative and differentiation potential of HGFs, with the objective of outlining current limitations and inspiring future research that could facilitate translating the regenerative potential of HGFs into the clinic.
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Affiliation(s)
| | - Andrew Leask
- College of Dentistry, University of Saskatchewan, 105 Wiggins Road, Saskatoon, SK S7N 5A2, Canada;
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Chen Y, Liu Y, Li H, Huna R, Tan X, Li N, Zhang Y, Jiao X, Liu M. C5aR antagonist inhibits LPS-induced inflammation in human gingival fibroblasts via NF-κB and MAPK signaling pathways. J Appl Oral Sci 2023; 31:e20220404. [PMID: 36753088 DOI: 10.1590/1678-7757-2022-0404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/21/2022] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVE Abnormal complement activation is associated with periodontitis. W54011 is a novel non-peptide C5aR antagonist (C5aRA) that exhibits favorable anti-inflammatory effects in various inflammatory models. However, whether W54011 inhibits periodontitis has not yet been fully elucidated. To address this, we have investigated the probable anti-inflammatory mechanism of W54011 in LPS-treated inflammation in human gingival fibroblasts (HGFs). METHODOLOGY HGFs were isolated from healthy gingival tissue samples using the tissue block method and were identified with immunofluorescence staining. The CCK8 assay and reverse transcription-PCR (RT-PCR) were used to select the optimal induction conditions for Lipopolysaccharide (LPS) and C5aRA (according to supplementary data S1, S2 and S3). The levels of inflammatory cytokines, C5aR, and the activation of NF-κB/MAPK signaling pathways were determined by RT-quantitative PCR (RT-qPCR) and Western blotting. RESULTS Immunofluorescence results showed that vimentin and FSP-1 were positive in HGFs and Keratin was negative in HGFs. Immunofluorescence staining demonstrated that C5aRA inhibited LPS-stimulated nuclear translocation of p-p65. RT-qPCR and Western blotting showed that C5aRA reduced the expression of IL-1β, IL-6, TNF-α, C5aR, p-p65, p-IκBα, p-JNK, p-c-JUN, and TLR4 in LPS-induced HGFs. CONCLUSION These findings suggested that C5aRA attenuated the release of inflammatory cytokines in LPS-induced HGFs by blocking the activation of the NF-κB and MAPK signaling pathways.
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Affiliation(s)
- Yan Chen
- The First Affiliated Hospital of Harbin Medical University, Department of Oral Maxillofacial Surgery, Harbin, Heilongjiang, China.,The Fourth Affiliated Hospital of Heilongjiang University of Traditional Chinese Medicine, Department of Stomatology, Harbin, Heilongjiang, China
| | - Yang Liu
- Heilongjiang Provincial Hospital, Department of Stomatology, Harbin, Heilongjiang, China
| | - Hao Li
- The Fourth Affiliated Hospital of Heilongjiang University of Traditional Chinese Medicine, Department of Stomatology, Harbin, Heilongjiang, China
| | - Risu Huna
- The Second Affiliated Hospital of Harbin Medical University, Oral Implant Center, Harbin, Heilongjiang, China
| | - Xiaohan Tan
- The Second Affiliated Hospital of Harbin Medical University, Department of Prosthodontics, Harbin, Heilongjiang, China
| | - Ning Li
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, Heilongjiang, China
| | - Yiying Zhang
- The Second Affiliated Hospital of Harbin Medical University, Oral Implant Center, Harbin, Heilongjiang, China
| | - Xiaohui Jiao
- The First Affiliated Hospital of Harbin Medical University, Department of Oral Maxillofacial Surgery, Harbin, Heilongjiang, China
| | - Mingyue Liu
- The Second Affiliated Hospital of Harbin Medical University, Department of Prosthodontics, Harbin, Heilongjiang, China
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Aimaijiang M, Liu Y, Zhang Z, Qin Q, Liu M, Abulikemu P, Liu L, Zhou Y. LIPUS as a potential strategy for periodontitis treatment: A review of the mechanisms. Front Bioeng Biotechnol 2023; 11:1018012. [PMID: 36911184 PMCID: PMC9992218 DOI: 10.3389/fbioe.2023.1018012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 02/10/2023] [Indexed: 02/24/2023] Open
Abstract
Periodontitis is a chronic inflammatory condition triggered by oral bacteria. A sustained inflammatory state in periodontitis could eventually destroy the alveolar bone. The key objective of periodontal therapy is to terminate the inflammatory process and reconstruct the periodontal tissues. The traditional Guided tissue regeneration (GTR) procedure has unstable results due to multiple factors such as the inflammatory environment, the immune response caused by the implant, and the operator's technique. Low-intensity pulsed ultrasound (LIPUS), as acoustic energy, transmits the mechanical signals to the target tissue to provide non-invasive physical stimulation. LIPUS has positive effects in promoting bone regeneration, soft-tissue regeneration, inflammation inhibition, and neuromodulation. LIPUS can maintain and regenerate alveolar bone during an inflammatory state by suppressing the expression of inflammatory factors. LIPUS also affects the cellular behavior of periodontal ligament cells (PDLCs), thereby protecting the regenerative potential of bone tissue in an inflammatory state. However, the underlying mechanisms of the LIPUS therapy are still yet to be summarized. The goal of this review is to outline the potential cellular and molecular mechanisms of periodontitis-related LIPUS therapy, as well as to explain how LIPUS manages to transmit mechanical stimulation into the signaling pathway to achieve inflammatory control and periodontal bone regeneration.
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Affiliation(s)
- Maierhaba Aimaijiang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Yiping Liu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Zhiying Zhang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Qiuyue Qin
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Manxuan Liu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Palizi Abulikemu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Lijun Liu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Yanmin Zhou
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
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Qiu G, Huang M, Liu J, Ma T, Schneider A, Oates TW, Lynch CD, Weir MD, Zhang K, Zhao L, Xu HHK. Human periodontal ligament stem cell encapsulation in alginate-fibrin-platelet lysate microbeads for dental and craniofacial regeneration. J Dent 2022; 124:104219. [PMID: 35817226 DOI: 10.1016/j.jdent.2022.104219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 05/20/2022] [Accepted: 05/25/2022] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE Tissue engineering is promising for dental and craniofacial regeneration. The objectives of this study were to develop a novel xeno-free alginate-fibrin-platelet lysate hydrogel with human periodontal ligament stem cells (hPDLSCs) for dental regeneration, and to investigate the proliferation and osteogenic differentiation of hPDLSCs using hPL as a cell culture nutrient supplement. METHODS hPDLSCs were cultured with Dulbecco's modified eagle medium (DMEM), DMEM + 10% fetal bovine serum (FBS), and DMEM + hPL (1%, 2.5%, and 5%). hPDLSCs were encapsulated in alginate-fibrin microbeads (Alg+Fib), alginate-hPL microbeads (Alg+hPL), or alginate-fibrin-hPL microbeads (Alg+Fib+hPL). hPDLSCs encapsulated in alginate microbeads were induced with an osteogenic medium containing hPL or FBS. Quantitative real-time polymerase chain reaction (qRT-PCR), alkaline phosphatase (ALP) activity, ALP staining, and alizarin red (ARS) staining was investigated. RESULTS hPDLSCs were released faster from Alg+Fib+hPL than from Alg+hPL. At 14 days, ALP activity was 44.1 ± 7.61 mU/mg for Alg+Fib+hPL group, higher than 28.07 ± 5.15 mU/mg of Alg+Fib (p<0.05) and 0.95 ± 0.2 mU/mg of control (p<0.01). At 7 days, osteogenic genes (ALP, RUNX2, COL1, and OPN) in Alg+Fib+hPL and Alg+Fib were 3-10 folds those of control. At 21 days, the hPDLSC-synthesized bone mineral amount in Alg+Fib+hPL and Alg+Fib was 7.5 folds and 4.3 folds that of control group, respectively. CONCLUSIONS The 2.5% hPL was determined to be optimal for hPDLSCs. Adding hPL into alginate hydrogel improved the viability of the hPDLSCs encapsulated in the microbeads. The hPL-based medium enhanced the osteogenic differentiation of hPDLSCs in Alg+Fib+hPL construct, showing a promising xeno-free approach for delivering hPDLSCs to enhance dental, craniofacial and orthopedic regenerations.
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Affiliation(s)
- Gengtao Qiu
- Department of Trauma and Joint Surgery, Shunde Hospital, Southern Medical University, Foshan, Guangdong, China; Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD 21201, United States of America; Department of Orthopaedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Mingguang Huang
- Department of Trauma and Joint Surgery, Shunde Hospital, Southern Medical University, Foshan, Guangdong, China
| | - Jin Liu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD 21201, United States of America; Key Laboratory of Shannxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shannxi, China
| | - Tao Ma
- Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, United States of America
| | - Abraham Schneider
- Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, United States of America; Member, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, United States of America
| | - Thomas W Oates
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD 21201, United States of America
| | - Christopher D Lynch
- Restorative Dentistry, University Dental School and Hospital, University College Cork, Wilton, Cork, Ireland
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland Dental School, Baltimore, MD 21201, United States of America.
| | - Ke Zhang
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China.
| | - Liang Zhao
- Department of Trauma and Joint Surgery, Shunde Hospital, Southern Medical University, Foshan, Guangdong, China; Department of Orthopaedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
| | - Hockin H K Xu
- Department of Trauma and Joint Surgery, Shunde Hospital, Southern Medical University, Foshan, Guangdong, China; Member, Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, United States of America; Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, United States of America
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Álvarez-Vásquez JL, Castañeda-Alvarado CP. Dental pulp fibroblast: A star Cell. J Endod 2022; 48:1005-1019. [DOI: 10.1016/j.joen.2022.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 12/16/2022]
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Seo YH, Hwang SH, Kim YN, Kim HJ, Bae EB, Huh JB. Bone Reconstruction Using Two-Layer Porcine-Derived Bone Scaffold Composed of Cortical and Cancellous Bones in a Rabbit Calvarial Defect Model. Int J Mol Sci 2022; 23:ijms23052647. [PMID: 35269791 PMCID: PMC8910567 DOI: 10.3390/ijms23052647] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/12/2022] [Accepted: 02/21/2022] [Indexed: 12/04/2022] Open
Abstract
In this study, we aimed to investigate the bone regeneration efficiency of two-layer porcine-derived bone scaffolds composed of cancellous and cortical bones in a rabbit calvarial defect model. Four circular calvaria defects were formed on cranium of rabbit and were filled with block bone scaffolds of each group: cortical bone block (Cortical group), cancellous bone block (Cancellous group), and two-layer bone block (2layer group). After 8 weeks, new bones were primarily observed in cancellous parts of the Cancellous and 2layer groups, while the Cortical group exhibited few new bones. In the results of new bone volume and area analyses, the Cancellous group showed the highest value, followed by the 2layer group, and were significantly higher than the Cortical group. Within the limitations of this study, the cancellous and two-layer porcine-derived bone scaffolds showed satisfactory bone regeneration efficiency; further studies on regulating the ratio of cortical and cancellous bones in two-layer bones are needed.
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Affiliation(s)
- Yong-Ho Seo
- Department of Prosthodontics, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan 50612, Korea; (Y.-H.S.); (S.-H.H.)
| | - Su-Hyun Hwang
- Department of Prosthodontics, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan 50612, Korea; (Y.-H.S.); (S.-H.H.)
| | - Yu-Na Kim
- Department of Oral Physiology, Periodontal Diseases Signaling Network Research Center, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan 50612, Korea; (Y.-N.K.); (H.-J.K.)
| | - Hyung-Joon Kim
- Department of Oral Physiology, Periodontal Diseases Signaling Network Research Center, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan 50612, Korea; (Y.-N.K.); (H.-J.K.)
| | - Eun-Bin Bae
- Department of Prosthodontics, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan 50612, Korea; (Y.-H.S.); (S.-H.H.)
- Section of Restorative Dentistry, University of California, Los Angeles, CA 90095, USA
- Correspondence: (E.-B.B.); (J.-B.H.); Tel.: +82-10-2355-6550 (E.-B.B.); +82-10-8007-9099 (J.-B.H.); Fax: +82-55-360-5134 (J.-B.H.)
| | - Jung-Bo Huh
- Department of Prosthodontics, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan 50612, Korea; (Y.-H.S.); (S.-H.H.)
- Correspondence: (E.-B.B.); (J.-B.H.); Tel.: +82-10-2355-6550 (E.-B.B.); +82-10-8007-9099 (J.-B.H.); Fax: +82-55-360-5134 (J.-B.H.)
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Hypoxia, a dynamic tool to amplify the gingival mesenchymal stem cells potential for neurotrophic factor secretion. Saudi J Biol Sci 2022; 29:3568-3576. [PMID: 35844419 PMCID: PMC9280216 DOI: 10.1016/j.sjbs.2022.02.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/05/2022] [Accepted: 02/23/2022] [Indexed: 12/27/2022] Open
Abstract
Gingival mesenchymal stem cells (GMSCs) have significant regenerative potential. Their potential applications range from the treatment of inflammatory diseases, wound healing, and oral disorders. Preconditioning these stem cells can optimize their biological properties. Hypoxia preconditioning of MSCs improves stem cell properties like proliferation, survival, and differentiation potential. This research explored the possible impact of hypoxia on the pluripotent stem cell properties that GMSCs possess. We evaluated the morphology, stemness, neurotrophic factors, and stemness-related genes. We compared the protein levels of secreted neurotrophic factors between normoxic and hypoxic GMSC-conditioned media (GMSC-CM). Results revealed that hypoxic cultured GMSC’s had augmented expression of neurotrophic factors BDNF, GDNF, VEGF, and IGF1 and stemness-related gene NANOG. Hypoxic GMSCs showed decreased expression of the OCT4 gene. In hypoxic GMSC-CM, the neurotrophic factors secretions were significantly higher than normoxic GMSC-CM. Our data demonstrate that culturing of GMSCs in hypoxia enhances the secretion of neurotrophic factors that can lead to neuronal lineage differentiation.
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