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Park WJ, Han SH, Lee HJ, Kim JH, Song HJ, Park JB. The Influence of Tacrolimus on Cellular Morphology, Cellular Viability, Osteogenic Differentiation, and mRNA Expression within Stem Cell Spheroids. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:702. [PMID: 38792884 PMCID: PMC11123479 DOI: 10.3390/medicina60050702] [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: 03/18/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 05/26/2024]
Abstract
Background and Objectives: Tacrolimus is a macrolide lactone compound derived from the bacterium Streptomyces tsukubensis, widely known as an immunosuppressant. In basic research, the effects of tacrolimus on osteogenic differentiation have been tested using mesenchymal stem cells. In this study, tacrolimus's effects on the cellular survival and osteogenic differentiation of stem cell spheroids were investigated. Materials and Methods: Concave microwells were used to form stem cell spheroids in the presence of tacrolimus at final concentrations of 0 μg/mL, 0.1 μg/mL, 1 μg/mL, 10 μg/mL, and 100 μg/mL. A microscope was used to test cellular vitality qualitatively, and an assay kit based on water-soluble tetrazolium salt was used to measure cellular viability quantitatively. Alkaline phosphatase activity and an anthraquinone dye test for measuring calcium deposits were used to assess osteogenic differentiation. To assess the expression of osteogenic differentiation, a quantitative polymerase chain reaction, Western blot, and RNA sequencing were performed. Results: Spheroids across all concentrations maintained a relatively uniform and spherical shape. Cell viability assay indicated that tacrolimus, up to a concentration of 100 μg/mL, did not significantly impair cell viability within spheroids cultured in osteogenic media. The increase in calcium deposition, particularly at lower concentrations of tacrolimus, points toward an enhancement in osteogenic differentiation. There was an increase in COL1A1 expression across all tacrolimus concentrations, as evidenced by the elevated mean and median values, which may indicate enhanced osteogenic activity. Conclusions: This study showed that tacrolimus does not significantly impact the viability of stem cell spheroids in osteogenic media, even at high concentrations. It also suggests that tacrolimus may enhance osteogenic differentiation, as indicated by increased calcium deposition and COL1A1 expression. These findings advance our understanding of tacrolimus's potential roles in tissue repair, regeneration, and stem cell-based therapeutic applications.
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Affiliation(s)
- Won-Jong Park
- Department of Oral and Maxillofacial Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea;
| | - Sung-Hoon Han
- Department of Orthodontics, Seoul Saint Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea;
| | - Hyun-Jin Lee
- Department of Periodontics, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (H.-J.L.); (J.-H.K.)
| | - Ju-Hwan Kim
- Department of Periodontics, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (H.-J.L.); (J.-H.K.)
| | - Hye-Jung Song
- Graduate School of Clinical Dental Science, The Catholic University of Korea, Seoul 06591, Republic of Korea;
| | - Jun-Beom Park
- Department of Periodontics, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (H.-J.L.); (J.-H.K.)
- Dental Implantology, Graduate School of Clinical Dental Science, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Department of Medicine, Graduate School, The Catholic University of Korea, Seoul 06591, Republic of Korea
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2
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Ozden Akkaya O, Dikmen T, Nawaz S, Kibria AG, Altunbaş K, Yağci A, Erdoğan M, Yaprakci MV. Comparison of proliferation and osteogenic differentiation potential of bovine adipose tissue and bone marrow derived stem cells. Biotech Histochem 2023; 98:267-279. [PMID: 36815431 DOI: 10.1080/10520295.2023.2177347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
Bone marrow derived stem cells (BMSC) are the most utilized cell type in the field of bone regeneration. Although BMSC are both safe and efficacious, the search for alternative sources for stem cells continues. We investigated bovine BMSC and adipose tissue derived mesenchymal stem cells (ATSC) using immunofluorescence and PCR. We further compared the osteogenic differentiation potentials of both sources of stem cells. We assessed alkaline phosphatase (ALP) enzyme levels and calcium deposition in differentiating cells at days 7, 14 and 21 to compare the osteogenic differentiation capability of both cell types. We found that ATSC expressed significantly higher ALP levels compared to BMSC throughout osteogenic differentiation. Calcium deposition was greater in ATSC than BMSC at days 7 and 14. By the end of day 21, BMSC produced greater calcium deposition. We found that ATSC undergo osteogenic differentiation more rapidly than BMSC, but BMSC provide greater mineralization over longer periods.
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Affiliation(s)
- Ozlem Ozden Akkaya
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Türkiye
| | - Tayfun Dikmen
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Türkiye
| | - Shah Nawaz
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Türkiye.,Department of Anatomy, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
| | - Asm Golam Kibria
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Türkiye.,Department of Anatomy and Histology, Chattogram University of Veterinary and Animal Sciences, Chattogram, Bangladesh
| | - Korhan Altunbaş
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Türkiye
| | - Artay Yağci
- Department of Histology and Embryology, Milas Veterinary Faculty, Mugla Sıtkı Kocman University, Mugla, Türkiye
| | - Metin Erdoğan
- Department of Veterinary Biology and Genetics, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Türkiye
| | - Mustafa Volkan Yaprakci
- Department of Surgery, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Türkiye
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3
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Chu CF, Mao SH, Shyu VBH, Chen CH, Chen CT. Allogeneic Bone-Marrow Mesenchymal Stem Cell with Moldable Cryogel for Craniofacial Bone Regeneration. J Pers Med 2021; 11:jpm11121326. [PMID: 34945798 PMCID: PMC8704672 DOI: 10.3390/jpm11121326] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 11/20/2022] Open
Abstract
Allogeneic bone-marrow mesenchymal stem cells (BMSCs) can promote bone regeneration and substitute for autologous BMSCs if autologous sources are unavailable, but the efficacy of bone regeneration by allogeneic BMSCs is still inconsistent. A Lewis rat cranium defect model was used to investigate the efficacy of bone regeneration between autologous and allogeneic BMSCs in gelatin-nanohydroxyapatite cryogel scaffolds. BMSCs from Wistar rats served as the allogeneic cell lineage. The full-thickness cranium defects were treated by either blank control, cryogel only, allogeneic BMSC-seeded cryogel, or autologous BMSC-seeded cryogel (n = 5). Bone regeneration was monitored by micro-computed tomography and examined histologically at week 12. In addition, we assessed the immune responses in vitro by mixed lymphocyte reaction (MLR) assay and CD4+ immunochemistry staining ex vivo. The MLR showed that allogeneic BSMCs elicited a weak immune response on day 14 that progressively attenuated by day 28. In vivo, the bone regeneration in allogeneic BMSCs was inferior at week 4, but progressively matched the autologous BMSCs by week 12. Our results suggest that allogeneic BMSCs can serve as an alternative source for bone regeneration.
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Affiliation(s)
- Cheng-Feng Chu
- Department of Plastic and Reconstructive Surgery, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan; (C.-F.C.); (V.B.-H.S.); (C.-H.C.)
| | - Shih-Hsuan Mao
- Department of Plastic and Reconstructive Surgery, College of Medicine, Chang Gung University, Linkou Chang Gung Memorial Hospital, Craniofacial Research Center, Taoyuan 333, Taiwan;
| | - Victor Bong-Hang Shyu
- Department of Plastic and Reconstructive Surgery, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan; (C.-F.C.); (V.B.-H.S.); (C.-H.C.)
| | - Chih-Hao Chen
- Department of Plastic and Reconstructive Surgery, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan; (C.-F.C.); (V.B.-H.S.); (C.-H.C.)
| | - Chien-Tzung Chen
- Department of Plastic and Reconstructive Surgery, College of Medicine, Chang Gung University, Linkou Chang Gung Memorial Hospital, Craniofacial Research Center, Taoyuan 333, Taiwan;
- Correspondence: ; Fax: +886-3328-7200
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4
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He L, Xiao J, Song L, Zhou R, Rong Z, He W, Dai F. HVEM Promotes the Osteogenesis of allo-MSCs by Inhibiting the Secretion of IL-17 and IFN-γ in Vγ4T Cells. Front Immunol 2021; 12:689269. [PMID: 34248977 PMCID: PMC8261146 DOI: 10.3389/fimmu.2021.689269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/02/2021] [Indexed: 12/29/2022] Open
Abstract
Bone defects are a common orthopaedic concern, and an increasing number of tissue-engineered bones (TEBs) are used to repair bone defects. Allogeneic mesenchymal stem cells (allo-MSCs) are used as seed cells in many approaches to develop TEB constructs, but the immune response caused by allogeneic transplantation may lead to transplant failure. V gamma 4 T (Vγ4T) cells play an important role in mediating the immune response in the early stage after transplantation; therefore, we wanted to verify whether suppressing Vγ4T cells by herpesvirus entry mediator (HVEM)/B and T lymphocyte attenuator (BTLA) signalling can promote MSCs osteogenesis in the transplanted area. In vitro experiments showed that the osteogenic differentiation of MSCs and Vγ4T cells was weakened after co-culture, and an increase in interleukin-17 (IL-17) and interferon-γ (IFN-γ) levels was detected in the culture supernatant. HVEM-transfected MSCs (MSCs-HVEM) still exhibited osteogenic differentiation activity after co-culture with Vγ4T cells, and the levels of IL-17 and IFN-γ in the co-culture supernatant were significantly reduced. In vivo experiments revealed that inflammation in the transplanted area was reduced and osteogenic repair was enhanced after Vγ4T cells were removed. MSCs-HVEM can also consistently contribute to reduced inflammation in the transplanted area and enhanced bone repair in wild-type (WT) mice. Therefore, our experiments verified that HVEM can promote the osteogenesis of allo-MSCs by inhibiting IL-17 and IFN-γ secretion from Vγ4T cells.
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Affiliation(s)
- Lei He
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing, China
| | - Jun Xiao
- Special Service Recuperation Center of Rocket Army, Guangzhou, China
| | - Lei Song
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing, China
| | - Rui Zhou
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing, China
| | - Zhigang Rong
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing, China
| | - Weifeng He
- State Key Laboratory of Trauma, Institute of Burn Research, Southwest Hospital, Army Medical University, Chongqing, China
| | - Fei Dai
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing, China
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5
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Liu C, Sun J. Impact of Marine-Based Biomaterials on the Immunoregulatory Properties of Bone Marrow-Derived Mesenchymal Stem Cells: Potential Use of Fish Collagen in Bone Tissue Engineering. ACS OMEGA 2020; 5:28360-28368. [PMID: 33163819 PMCID: PMC7643310 DOI: 10.1021/acsomega.0c04360] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 10/06/2020] [Indexed: 06/11/2023]
Abstract
A key issue in the field of tissue engineering and stem cell therapy is immunological rejection after the implantation of allogeneic bone marrow-derived mesenchymal stem cells (BMSCs). In addition, maintaining the immunoregulatory function of BMSCs is critical to achieving tissue repair. In recent years, scientists have become interested in fish collagen because of its unique osteoinductive activity. However, it is still unclear whether osteogenically differentiated BMSCs induced by fish collagen maintain their immunoregulatory functions. To address this question, BMSCs were isolated from 8-week-old male BALB/c mice, and a noncontact coculture model was established consisting of macrophages and BMSCs treated with hydrolyzed fish collagen (HFC). Cell proliferation of the macrophages was determined by MTT. The gene and protein expression levels of the M1 and M2 macrophage markers were measured by real-time PCR and enzyme-linked immunosorbent assay (ELISA). To study the role of TNF-α-induced gene/protein 6 (TSG-6), TSG-6 was targeted by short interfering RNA (siRNA) in BMSCs, then the osteogenic differentiation ability of the BMSCs was examined by western blotting. The mRNA expression levels of interleukin-10 (IL-10), CCL22 (a macrophage-derived chemokine), tumor necrosis factor α (TNF-α), and interleukin-12 (IL-12), and the protein expression levels of arginase-1 (Arg-1) and inducible nitric oxide synthase (iNOS) of macrophages cocultured with TSG-6-siRNA-BMSCs+HFC were detected by real-time PCR and western blotting, respectively. The results showed that the osteogenically differentiated BMSCs induced by HFC did not affect the proliferation of macrophages. Osteogenically differentiated BMSCs induced by HFC promoted the expression of M2 macrophage markers IL-10 and CCL22, while HFC inhibited the expression of M1 macrophage markers, including TNF-α and IL-12. The TSG-6 knockdown led to a decrease in the production of TSG-6 without impairing the expression of bone sialoprotein (BSP), osteocalcin (OCN), and Runt-related transcription factor 2 (RUNX2) by BMSCs. TSG-6 silencing significantly counteracted the effect of HFC, and the expression of IL-10, CCL22, and Arg-1 were all decreased in the macrophages cocultured with TSG-6-siRNA-BMSCs+HFC, while that of TNF-α, IL-12, and iNOS were increased relative to the BMSCs+HFC group. The data demonstrated that osteogenically differentiated BMSCs induced by fish collagen retained their immunomodulatory functions. This study provides an additional scientific basis for future applications of fish collagen as an osteogenic component in the fields of tissue engineering and stem cell therapy.
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6
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Chang SH, Kim HJ, Park CG. Allogeneic ADSCs Induce the Production of Alloreactive Memory-CD8 T Cells through HLA-ABC Antigens. Cells 2020; 9:cells9051246. [PMID: 32443511 PMCID: PMC7290988 DOI: 10.3390/cells9051246] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/13/2020] [Accepted: 05/16/2020] [Indexed: 12/11/2022] Open
Abstract
We investigated the immunogenicity of allogeneic human adipose-derived mesenchymal stem cells (ADSCs) through the production of alloreactive-CD8 T and -memory CD8 T cells, based on their human leukocyte antigen (HLA) expression. In surface antigen analysis, ADSCs do not express co-stimulatory molecules, but expresses HLA-ABC, which is further increased by exposure to the pro-inflammatory cytokines as well as IFN-γ alone. For immunogenicity analysis, allogeneic ADSCs cultured in xenofree medium (XF-ADSCs) were incubated with the recipient immune cells for allogeneic-antigen stimulation. As a result, XF-ADSCs induced IFN-γ and IL-17A release by alloreactive-CD8 T cells and the production of alloreactive-CD8 T cell through a direct pathway, although they have immunomodulatory activity. In the analysis of alloreactive memory CD8 T cells, XF-ADSCs also significantly induced the production of CFSE-low-CD8 TEM and -CD8 TCM cells. However, HLA-blocking antibodies significantly inhibited the production of CFSE-low memory-CD8 T cells, indicating that HLAs are the main antigens responsible for the development of allogeneic ADSCs' immunogenicity. These results suggested that HLA surface antigens expressed in allogeneic MSCs should be solved in order to address concerns related to the immunogenicity problem.
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Affiliation(s)
- Sung-Ho Chang
- Departments of Oral Microbiology and Immunology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul 03080, Korea;
| | - Hyun Je Kim
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Korea;
- Department of Dermatology, Samsung Medical Center, Seoul 06351, Korea
| | - Chung-Gyu Park
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Korea;
- Institute of Endemic Diseases, Medical Research center, Seoul National University College of Medicine, Seoul 03080, Korea
- Cancer Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
- Correspondence: ; Tel.: +82-2-740-8308
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7
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Allogeneic ADSCs induce CD8 T cell-mediated cytotoxicity and faster cell death after exposure to xenogeneic serum or proinflammatory cytokines. Exp Mol Med 2019; 51:1-10. [PMID: 30858365 PMCID: PMC6412000 DOI: 10.1038/s12276-019-0231-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 09/02/2018] [Accepted: 10/29/2018] [Indexed: 12/28/2022] Open
Abstract
This study examined the induction of recipient T-cell cytotoxicity after exposure to allogeneic adipose-derived mesenchymal stem cells (ADSCs). ADSCs pre-exposed to xenogeneic serum significantly induced cytotoxicity through CD8 T-cell granzyme B secretion after allogeneic antigen stimulation, and this effect was increased with prolonged reaction time. ADSCs pretreated with proinflammatory cytokines also induced cytotoxicity through granzyme B secretion and significantly increased human leukocyte antigen (HLA)-ABC expression. T-cell cytotoxicity towards ADSCs grown in xeno-free medium (XF-ADSCs) was lower than that towards ADSCs exposed to xenogeneic serum or proinflammatory cytokines, but XF-ADSCs still induced cytotoxicity. We further investigated the causes of T-cell cytotoxicity towards XF-ADSCs. XF-ADSC death was effectively inhibited by HLA-blocking antibodies, suggesting that ADSC HLAs are a major cause of alloreactive T-cell generation. These results indicated that culturing of allogeneic ADSCs with recipient serum may alleviate alloreactive CD8 T-cell cytotoxicity. Ultimately, development of therapeutic agents using autologous ADSCs would be a suitable way to avoid immunogenicity and CD8 T cell-mediated cytotoxicity, but more attention should be paid to the potential immunogenicity of allogeneic ADSCs, which could perhaps be mitigated through the use of immunosuppressants. The conditions under which donor stem cells are cultured can limit attack by the recipient’s immune system after transplantation. Adult stem cells taken from donors who are genetically similar to recipients show promise as therapeutic agents for various conditions, from cardiac to immunity-related diseases. However, patients’ immune systems will often attack and destroy the transplanted cells. Chung-Gyu Park and Sung-Ho Chang at Seoul National University, South Korea, explored methods of growing stem cells so that they are less likely to be destroyed by the patient’s T-cells. The team found that human T-cells will attack stem cells grown in media containing bovine serum or those pre-treated with pro-inflammatory proteins. T-cell activity was weaker against stem cells grown in media with autologous serum.
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8
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Longoni A, Knežević L, Schepers K, Weinans H, Rosenberg AJWP, Gawlitta D. The impact of immune response on endochondral bone regeneration. NPJ Regen Med 2018; 3:22. [PMID: 30510772 PMCID: PMC6265275 DOI: 10.1038/s41536-018-0060-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 10/26/2018] [Indexed: 12/29/2022] Open
Abstract
Tissue engineered cartilage substitutes, which induce the process of endochondral ossification, represent a regenerative strategy for bone defect healing. Such constructs typically consist of multipotent mesenchymal stromal cells (MSCs) forming a cartilage template in vitro, which can be implanted to stimulate bone formation in vivo. The use of MSCs of allogeneic origin could potentially improve the clinical utility of the tissue engineered cartilage constructs in three ways. First, ready-to-use construct availability can speed up the treatment process. Second, MSCs derived and expanded from a single donor could be applied to treat several patients and thus the costs of the medical interventions would decrease. Finally, it would allow more control over the quality of the MSC chondrogenic differentiation. However, even though the envisaged clinical use of allogeneic cell sources for bone regeneration is advantageous, their immunogenicity poses a significant obstacle to their clinical application. The aim of this review is to increase the awareness of the role played by immune cells during endochondral ossification, and in particular during regenerative strategies when the immune response is altered by the presence of implanted biomaterials and/or cells. More specifically, we focus on how this balance between immune response and bone regeneration is affected by the implantation of a cartilaginous tissue engineered construct of allogeneic origin.
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Affiliation(s)
- A Longoni
- 1Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht University, Utrecht, G05.222, PO Box 85500, 3508 GA The Netherlands.,Regenerative Medicine Center Utrecht, 3584 CT Utrecht, The Netherlands
| | - L Knežević
- 1Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht University, Utrecht, G05.222, PO Box 85500, 3508 GA The Netherlands.,3Faculty of Health Sciences, University of Bristol, Biomedical Sciences Building, Bristol, BS8 1TD UK
| | - K Schepers
- 4Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, 2300RC Leiden, The Netherlands
| | - H Weinans
- 5Department of Orthopaedics, University Medical Center Utrecht, Utrecht University, 3508 GA Utrecht, The Netherlands.,6Department of Rheumatology, University Medical Center Utrecht, Utrecht University, 3584CX Utrecht, The Netherlands.,7Department of Biomechanical Engineering, Delft University of Technology, 2628CD Delft, The Netherlands
| | - A J W P Rosenberg
- 1Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht University, Utrecht, G05.222, PO Box 85500, 3508 GA The Netherlands
| | - D Gawlitta
- 1Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht University, Utrecht, G05.222, PO Box 85500, 3508 GA The Netherlands.,Regenerative Medicine Center Utrecht, 3584 CT Utrecht, The Netherlands
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9
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Autologous Mesenchymal Stroma Cells Are Superior to Allogeneic Ones in Bone Defect Regeneration. Int J Mol Sci 2018; 19:ijms19092526. [PMID: 30149650 PMCID: PMC6163925 DOI: 10.3390/ijms19092526] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/10/2018] [Accepted: 08/22/2018] [Indexed: 12/19/2022] Open
Abstract
The application of autologous mesenchymal stem cells (MSC) for the treatment of bone defects requires two invasive procedures and several weeks of ex vivo cell expansion. To overcome these limitations, the administration of allogeneic MSC may be attractive, because they are anticipated to be immunoprivileged. Because preclinical studies using various animal models are conflicting with respect to the efficacy of allogeneic MSC, we investigated whether autologous and allogeneic human MSC (hMSC) are equally effective in regenerating bone in a humanized mouse model resembling the human immune system. Applying autologous and allogeneic hMSC in critically sized femoral defects, we found that allogeneic hMSC elicited a mild immune response early after implantation, whereas early angiogenic processes were similar in both treatments. At later healing time points, the transplantation of allogeneic hMSC resulted in less bone formation than autologous hMSC, associated with a reduced expression of the osteogenic factor Runx2 and impaired angiogenesis. We found by species-specific staining for collagen-type-1α2 that MSCs of either source did not synthesize new bone matrix, indicating an indirect contribution of transplanted hMSC to bone regeneration. In conclusion, our data suggest that the application of autologous hMSC is superior to that of allogeneic cells for bone defect treatment.
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10
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Shi R, Huang Y, Ma C, Wu C, Tian W. Current advances for bone regeneration based on tissue engineering strategies. Front Med 2018; 13:160-188. [PMID: 30047029 DOI: 10.1007/s11684-018-0629-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 12/14/2017] [Indexed: 01/07/2023]
Abstract
Bone tissue engineering (BTE) is a rapidly developing strategy for repairing critical-sized bone defects to address the unmet need for bone augmentation and skeletal repair. Effective therapies for bone regeneration primarily require the coordinated combination of innovative scaffolds, seed cells, and biological factors. However, current techniques in bone tissue engineering have not yet reached valid translation into clinical applications because of several limitations, such as weaker osteogenic differentiation, inadequate vascularization of scaffolds, and inefficient growth factor delivery. Therefore, further standardized protocols and innovative measures are required to overcome these shortcomings and facilitate the clinical application of these techniques to enhance bone regeneration. Given the deficiency of comprehensive studies in the development in BTE, our review systematically introduces the new types of biomimetic and bifunctional scaffolds. We describe the cell sources, biology of seed cells, growth factors, vascular development, and the interactions of relevant molecules. Furthermore, we discuss the challenges and perspectives that may propel the direction of future clinical delivery in bone regeneration.
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Affiliation(s)
- Rui Shi
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Yuelong Huang
- Department of Spine Surgery of Beijing Jishuitan Hospital, The Fourth Clinical Medical College of Peking University, Beijing, 100035, China
| | - Chi Ma
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Chengai Wu
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Wei Tian
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing, 100035, China. .,Department of Spine Surgery of Beijing Jishuitan Hospital, The Fourth Clinical Medical College of Peking University, Beijing, 100035, China.
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11
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Rong Z, Zhang F, Wang Z, He W, Dong S, Xu J, Dai F. Improved Osteogenesis by HVEM-Expressing Allogenic Bone Marrow-Derived Mesenchymal Stem Cells in an Immune Activation Condition and Mouse Femoral Defect Model. Tissue Eng Part A 2018; 24:1167-1178. [PMID: 29376477 DOI: 10.1089/ten.tea.2017.0354] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Use of allogeneic mesenchymal stem cells (allo-MSCs) in bone tissue engineering strategies can overcome the limitations associated with autologous MSCs, but unfortunately, the immunogenicity of allo-MSCs leads to a high rate of rejection, unless immunosuppressive agents are used. B and T lymphocyte attenuator (BTLA) is a newly discovered immunoglobulin superfamily inhibitory receptor, and Herpesvirus-entry mediator (HVEM), a member of the tumor necrosis factor receptor family, is the only ligand of BTLA. Both BTLA and HVEM are widely expressed in B and T lymphocytes and other immune cells and play significant roles in the negative regulation of an immunoreaction. Therefore, we hypothesized that MSCs could be modified to maintain their bone differentiation ability through negative regulation of the immune response, and to test this hypothesis, we generated HVEM-expressing MSCs and tested their potential for osteogenic differentiation and bone repair in a simulated immune activation condition in vitro and in a mice femoral defect model. We found that osteogenic differentiation of allo-MSCs was decreased significantly in the activated immune microenvironment and that HVEM expression by allo-MSCs inhibited the immune response, resulting in improved osteogenic differentiation in vitro and new bone formation by allo-MSCs in a mouse femoral defect model. Our results also preliminarily suggested that the mechanism by which HVEM-expressing allo-MSCs overcome inflammation and enhance osteogenesis may be related to inhibition of interleukin-17. Overall, the data obtained in the present study provide support for the further development of HVEM-modified allo-MSCs as potentially ideal seed cells for bone tissue engineering applications.
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Affiliation(s)
- Zhigang Rong
- 1 National & Regional United Engineering Laboratory, Department of Orthopaedics, Southwest Hospital, Army Medical University , Chongqing, China
| | - Fei Zhang
- 2 Department of Orthopaedics, General hospital of Xin Jiang military region , Xinjiang, China
| | - Zhengdong Wang
- 1 National & Regional United Engineering Laboratory, Department of Orthopaedics, Southwest Hospital, Army Medical University , Chongqing, China
| | - Weifeng He
- 3 State Key Laboratory of Trauma, Institute of Burn Research, Southwest Hospital, Army Medical University , Chongqing, China
| | - Shiwu Dong
- 1 National & Regional United Engineering Laboratory, Department of Orthopaedics, Southwest Hospital, Army Medical University , Chongqing, China .,4 Department of Biomedical Materials Science, School of Biomedical Engineering, Army Medical University , Chongqing, China
| | - Jianzhong Xu
- 1 National & Regional United Engineering Laboratory, Department of Orthopaedics, Southwest Hospital, Army Medical University , Chongqing, China
| | - Fei Dai
- 1 National & Regional United Engineering Laboratory, Department of Orthopaedics, Southwest Hospital, Army Medical University , Chongqing, China
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12
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Abstract
"Although there is ample evidence that beneficial results can be obtained from the use of mesenchymal stem cells, several questions regarding their use remain to be answered. For many of these questions, preclinical models will be helpful, but the task of evaluating and implementing these findings for orthopaedic patients falls onto the shoulders of clinical researchers. Evaluation of these questions is a daunting, but such a challenge fits the concept of personalized medicine in today's medicine."
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13
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Thorpe AA, Freeman C, Farthing P, Callaghan J, Hatton PV, Brook IM, Sammon C, Le Maitre CL. In vivo safety and efficacy testing of a thermally triggered injectable hydrogel scaffold for bone regeneration and augmentation in a rat model. Oncotarget 2018; 9:18277-18295. [PMID: 29719605 PMCID: PMC5915072 DOI: 10.18632/oncotarget.24813] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 02/27/2018] [Indexed: 12/29/2022] Open
Abstract
Bone loss resulting from degenerative diseases and trauma is a significant clinical burden which is likely to grow exponentially with the aging population. In a number of conditions where pre-formed materials are clinically inappropriate an injectable bone forming hydrogel could be beneficial. The development of an injectable hydrogel to stimulate bone repair and regeneration would have broad clinical impact and economic benefit in a variety of orthopedic clinical applications. We have previously reported the development of a Laponite® crosslinked pNIPAM-co-DMAc (L-pNIPAM-co-DMAc) hydrogel delivery system, loaded with hydroxyapatite nanoparticles (HAPna), which was capable of inducing osteogenic differentiation of mesenchymal stem cells (MSCs) without the need for additional growth factors in vitro. However to enable progression towards clinical acceptability, biocompatibility and efficacy of the L-pNIPAM-co-DMAc hydrogel to induce bone repair in vivo must be determined. Biocompatibility was evaluated by subcutaneous implantation for 6 weeks in rats, and efficacy to augment bone repair was evaluated within a rat femur defect model for 4 weeks. No inflammatory reactions, organ toxicity or systemic toxicity were observed. In young male rats where hydrogel was injected, defect healing was less effective than sham operated controls when rat MSCs were incorporated. Enhanced bone healing was observed however, in aged exbreeder female rats where acellular hydrogel was injected, with increased deposition of collagen type I and Runx2. Integration of the hydrogel with surrounding bone was observed without the need for delivered MSCs; native cell infiltration was also seen and bone formation was observed within all hydrogel systems investigated. This hydrogel can be delivered directly into the target site, is biocompatible, promotes increased bone formation and facilitates migration of cells to promote integration with surrounding bone, for safe and efficacious bone repair.
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Affiliation(s)
- Abbey A Thorpe
- Biomolecular Sciences Research Centre, Sheffield Hallam University, S1 1WB, UK
| | | | - Paula Farthing
- School of Clinical Dentistry, University of Sheffield, S10 2TA, UK
| | - Jill Callaghan
- School of Clinical Dentistry, University of Sheffield, S10 2TA, UK
| | - Paul V Hatton
- School of Clinical Dentistry, University of Sheffield, S10 2TA, UK
| | - Ian M Brook
- School of Clinical Dentistry, University of Sheffield, S10 2TA, UK
| | - Chris Sammon
- Materials and Engineering Research Institute, Sheffield Hallam University, S1 1WB, UK
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14
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Atesok K, Fu FH, Sekiya I, Stolzing A, Ochi M, Rodeo SA. Stem cells in degenerative orthopaedic pathologies: effects of aging on therapeutic potential. Knee Surg Sports Traumatol Arthrosc 2017; 25:626-636. [PMID: 26298714 DOI: 10.1007/s00167-015-3763-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Accepted: 08/13/2015] [Indexed: 02/06/2023]
Abstract
PURPOSE The purpose of this study was to summarize the current evidence on the use of stem cells in the elderly population with degenerative orthopaedic pathologies and to highlight the pathophysiologic mechanisms behind today's therapeutic challenges in stem cell-based regeneration of destructed tissues in the elderly patients with osteoarthritis (OA), degenerative disc disease (DDD), and tendinopathies. METHODS Clinical and basic science studies that report the use of stem cells in the elderly patients with OA, DDD, and tendinopathies were identified using a PubMed search. The studies published in English have been assessed, and the best and most recent evidence was included in the current study. RESULTS Evidence suggests that, although short-term results regarding the effects of stem cell therapy in degenerative orthopaedic pathologies can be promising, stem cell therapies do not appear to reverse age-related tissue degeneration. Causes of suboptimal outcomes can be attributed to the decrease in the therapeutic potential of aged stem cell populations and the regenerative capacity of these cells, which might be negatively influenced in an aged microenvironment within the degenerated tissues of elderly patients with OA, DDD, and tendinopathies. CONCLUSIONS Clinical protocols guiding the use of stem cells in the elderly patient population are still under development, and high-level randomized controlled trials with long-term outcomes are lacking. Understanding the consequences of age-related changes in stem cell function and responsiveness of the in vivo microenvironment to stem cells is critical when designing cell-based therapies for elderly patients with degenerative orthopaedic pathologies.
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Affiliation(s)
- Kivanc Atesok
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 3471 Fifth Avenue, Suite 1011, Pittsburgh, PA, 15213, USA.
| | - Freddie H Fu
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 3471 Fifth Avenue, Suite 1011, Pittsburgh, PA, 15213, USA
| | - Ichiro Sekiya
- Department of Cartilage Regeneration, Tokyo Medical and Dental University, Tokyo, Japan
| | - Alexandra Stolzing
- Center for Biological Engineering, Wolfson School, Loughborough University, Loughborough, UK.,Translational Center for Regenerative Medicine (TRM), University Leipzig, Leipzig, Germany
| | - Mitsuo Ochi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Scott A Rodeo
- Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, NY, USA
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15
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Weigand A, Beier JP, Schmid R, Knorr T, Kilian D, Götzl R, Gerber T, Horch RE, Boos AM. Bone Tissue Engineering Under Xenogeneic-Free Conditions in a Large Animal Model as a Basis for Early Clinical Applicability. Tissue Eng Part A 2017; 23:208-222. [PMID: 27998239 DOI: 10.1089/ten.tea.2016.0176] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
For decades, researchers have been developing a range of promising strategies in bone tissue engineering with the aim of producing a significant clinical benefit over existing therapies. However, a major problem concerns the traditional use of xenogeneic substances for the expansion of cells, which complicates direct clinical transfer. The study's aim was to establish a totally autologous sheep model as a basis for further preclinical studies and future clinical application. Ovine mesenchymal stromal cells (MSC) were cultivated in different concentrations (0%, 2%, 5%, 10%, and 25%) of either autologous serum (AS) or fetal calf serum (FCS). With an increase of serum concentration, enhanced metabolic activity and proliferation could be observed. There were minor differences between MSC cultivated in AS or FCS, comparing gene and protein expression of osteogenic and stem cell markers, morphology, and osteogenic differentiation. MSC implanted subcutaneously in the sheep model, together with a nanostructured bone substitute, either in stable block or moldable putty form, induced similar vascularization and remodeling of the bone substitute irrespective of cultivation of MSC in AS or FCS and osteogenic differentiation. The bone substitute in block form together with MSC proved particularly advantageous in the induction of ectopic bone formation compared to the cell-free control and putty form. It could be demonstrated that AS is suitable for replacement of FCS for cultivation of ovine MSC for bone tissue engineering purposes. Substantial progress has been made in the development of a strictly xenogeneic-free preclinical animal model to bring future clinical application of bone tissue engineering strategies within reach.
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Affiliation(s)
- Annika Weigand
- 1 Laboratory for Tissue Engineering and Regenerative Medicine, Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Erlangen, Germany
| | - Justus P Beier
- 1 Laboratory for Tissue Engineering and Regenerative Medicine, Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Erlangen, Germany
| | - Rafael Schmid
- 1 Laboratory for Tissue Engineering and Regenerative Medicine, Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Erlangen, Germany
| | - Tobias Knorr
- 1 Laboratory for Tissue Engineering and Regenerative Medicine, Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Erlangen, Germany
| | - David Kilian
- 1 Laboratory for Tissue Engineering and Regenerative Medicine, Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Erlangen, Germany
| | - Rebekka Götzl
- 1 Laboratory for Tissue Engineering and Regenerative Medicine, Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Erlangen, Germany
| | - Thomas Gerber
- 2 Institute of Physics, University of Rostock , Rostock, Germany
| | - Raymund E Horch
- 1 Laboratory for Tissue Engineering and Regenerative Medicine, Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Erlangen, Germany
| | - Anja M Boos
- 1 Laboratory for Tissue Engineering and Regenerative Medicine, Department of Plastic and Hand Surgery, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU) , Erlangen, Germany
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16
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Naranjo JD, Scarritt ME, Huleihel L, Ravindra A, Torres CM, Badylak SF. Regenerative Medicine: lessons from Mother Nature. Regen Med 2016; 11:767-775. [PMID: 27885899 DOI: 10.2217/rme-2016-0111] [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] [Indexed: 12/12/2022] Open
Abstract
Regenerative medicine strategies for the restoration of functional tissue have evolved from the concept of ex vivo creation of engineered tissue toward the broader concept of in vivo induction of functional tissue reconstruction. Multidisciplinary approaches are being investigated to achieve this goal using evolutionarily conserved principles of stem cell biology, developmental biology and immunology, current methods of engineering and medicine. This evolution from ex vivo tissue engineering to the manipulation of fundamental in vivo tenets of development and regeneration has the potential to capitalize upon the incredibly complex and only partially understood ability of cells to adapt, proliferate, self-organize and differentiate into functional tissue.
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Affiliation(s)
- Juan Diego Naranjo
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA.,Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Michelle E Scarritt
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA.,Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Luai Huleihel
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA.,Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Anjani Ravindra
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA.,Division of Pediatric Pulmonary Medicine, Allergy & Immunology, Children's Hospital of UPMC, Pittsburgh, PA 15224, USA
| | - Crisanto M Torres
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA.,Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Stephen F Badylak
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA.,Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, USA
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17
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The challenges and promises of allogeneic mesenchymal stem cells for use as a cell-based therapy. Stem Cell Res Ther 2015; 6:234. [PMID: 26620426 PMCID: PMC4665863 DOI: 10.1186/s13287-015-0240-9] [Citation(s) in RCA: 195] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are ideal for cell-based therapy in various inflammatory diseases because of their immunosuppressive and tissue repair properties. Moreover, their immunosuppressive properties and low immunogenicity contribute to a reduced or weakened immune response elicited by the implantation of allogeneic MSCs compared with other cell types. Therefore, implantation of allogeneic MSCs may be a promising cell-based therapy. In this review, we first summarize the unique advantages of allogeneic MSCs for therapeutic applications. Second, we critically analyze the factors influencing their therapeutic effects, including administration routes, detection time-points, disease models, differentiation of MSCs in vivo, and timing and dosage of MSC administration. Finally, current approaches to allogeneic MSC application are discussed. In conclusion, allogeneic MSCs are a promising option because of their low immunogenicity and immunosuppressive and tissue repair capabilities. Further investigations are needed to enhance the consistency and efficacy of MSCs when used as a cell-based therapy in inflammatory diseases as well as for tissue repair.
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18
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Wu J, Wang Q, Fu X, Wu X, Gu C, Bi J, Xie F, Kang N, Liu X, Yan L, Cao Y, Xiao R. Influence of Immunogenicity of Allogeneic Bone Marrow Mesenchymal Stem Cells on Bone Tissue Engineering. Cell Transplant 2015; 25:229-42. [PMID: 25853798 DOI: 10.3727/096368915x687967] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Allogeneic bone marrow mesenchymal stem cell (allo-BMSC)-based tissue-engineered bone (TEB) has great potential for bone defect repair. However, the immunogenicities and biological roles of allo-BMSCs are still controversial. In this study, we established an animal model of critical-sized mandibular defect in beagle dogs and compared the repairing effects of allo-BMSC-based TEB with autogenic BMSC (auto-BMSC)-based TEB without the administration of immunosuppressants. During the first 2 weeks postimplantation, a transient immune response in the allo-BMSC group was detected with an increase in proinflammation cytokines TNF-α, IFN-γ, and IL-2, a declination of anti-inflammation cytokine IL-10, and an increase in percentages of CD4(+) and CD8(+) T-cell subsets in peripheral blood. Nevertheless, there was no significant difference in bone union achievement, bone mineral density, and biomechanical properties between the two groups at 12 and 24 weeks postimplantation. Further subcutaneous implantation of allo-BMSCs/scaffold also exhibited the similar transient immune responses in the first 2 weeks postimplantation but followed by a decreased bone formation at 4 and 8 weeks postimplantation. These findings indicate that allo-BMSCs can induce a transient immunoreaction, which may temporally delay the osteogenesis of allo-BMSC/scaffold complex in early stage of in vivo implantation, whereas the long-term engineered bone formation was not affected.
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Affiliation(s)
- JingGuo Wu
- Research Center of Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P. R. China
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19
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Chai YC, Geris L, Bolander J, Pyka G, Van Bael S, Luyten FP, Schrooten J. In vivo ectopic bone formation by devitalized mineralized stem cell carriers produced under mineralizing culture condition. Biores Open Access 2014; 3:265-77. [PMID: 25469312 PMCID: PMC4245878 DOI: 10.1089/biores.2014.0050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Functionalization of tissue engineering scaffolds with in vitro–generated bone-like extracellular matrix (ECM) represents an effective biomimetic approach to promote osteogenic differentiation of stem cells in vitro. However, the bone-forming capacity of these constructs (seeded with or without cells) is so far not apparent. In this study, we aimed at developing a mineralizing culture condition to biofunctionalize three-dimensional (3D) porous scaffolds with highly mineralized ECM in order to produce devitalized, osteoinductive mineralized carriers for human periosteal-derived progenitors (hPDCs). For this, three medium formulations [i.e., growth medium only (BM1), with ascorbic acid (BM2), and with ascorbic acid and dexamethasone (BM3)] supplemented with calcium (Ca2+) and phosphate (PO43−) ions simultaneously as mineralizing source were investigated. The results showed that, besides the significant impacts on enhancing cell proliferation (the highest in BM3 condition), the formulated mineralizing media differentially regulated the osteochondro-related gene markers in a medium-dependent manner (e.g., significant upregulation of BMP2, bone sialoprotein, osteocalcin, and Wnt5a in BM2 condition). This has resulted in distinguished cell populations that were identifiable by specific gene signatures as demonstrated by the principle component analysis. Through devitalization, mineralized carriers with apatite crystal structures unique to each medium condition (by X-ray diffraction and SEM analysis) were obtained. Quantitatively, BM3 condition produced carriers with the highest mineral and collagen contents as well as human-specific VEGF proteins, followed by BM2 and BM1 conditions. Encouragingly, all mineralized carriers (after reseeded with hPDCs) induced bone formation after 8 weeks of subcutaneous implantation in nude mice models, with BM2-carriers inducing the highest bone volume, and the lowest in the BM3 condition (as quantitated by nano-computed tomography [nano-CT]). Histological analysis revealed different bone formation patterns, either bone ossicles containing bone marrow surrounding the scaffold struts (in BM2) or bone apposition directly on the struts' surface (in BM1 and BM3). In conclusion, we have presented experimental data on the feasibility to produce devitalized osteoinductive mineralized carriers by functionalizing 3D porous scaffolds with an in vitro cell-made mineralized matrix under the mineralizing culture conditions.
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Affiliation(s)
- Yoke Chin Chai
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center , KU Leuven, Leuven, Belgium . ; Department of Biomedical Engineering, Faculty of Engineering, University of Malaya , Kuala Lumpur, Malaysia . ; Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium
| | - Liesbet Geris
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium . ; Biomechanics Research Unit, University of Liege , Liege, Belgium
| | - Johanna Bolander
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center , KU Leuven, Leuven, Belgium . ; Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium
| | - Grzegorz Pyka
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium . ; Department of Materials Engineering, KU Leuven , Heverlee, Belgium
| | - Simon Van Bael
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium . ; Division of Production Engineering, Machine Design and Automation, Department of Mechanical Engineering, KU Leuven , Heverlee, Belgium
| | - Frank P Luyten
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center , KU Leuven, Leuven, Belgium . ; Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium
| | - Jan Schrooten
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium . ; Department of Materials Engineering, KU Leuven , Heverlee, Belgium
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20
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Lohan P, Coleman CM, Murphy JM, Griffin MD, Ritter T, Ryan AE. Changes in immunological profile of allogeneic mesenchymal stem cells after differentiation: should we be concerned? Stem Cell Res Ther 2014; 5:99. [PMID: 25158057 PMCID: PMC4282147 DOI: 10.1186/scrt488] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are an adult stromal cell population possessing potent differentiation capacity and a potential for use across major histocompatibility complex barriers. Although allogeneic MSCs have potent immunosuppressive properties, evidence also suggests that they elicit a weak allogeneic immune response. However, the effect of induced differentiation on the immunosuppressive ability and immunogenicity of allogeneic MSCs is a potential obstacle when applying MSCs in tissue replacement therapies. These concerns will be explored in this review, with particular emphasis on changes in the cell surface expression of immunogenic markers, changes in the secretion of immunosuppressive molecules and in vivo functional benefits of the cell therapy. We review the literature from a translational point of view, focusing on pre-clinical studies that have utilised and analysed the effects of allogeneic immune responses on the ability of allogeneic MSCs to regenerate damaged tissue in models of bone, heart and cartilage defects.
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21
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Abstract
Two opposing descriptions of so-called mesenchymal stem cells (MSCs) exist at this time. One sees MSCs as the postnatal, self-renewing, and multipotent stem cells for the skeleton. This cell coincides with a specific type of bone marrow perivascular cell. In skeletal physiology, this skeletal stem cell is pivotal to the growth and lifelong turnover of bone and to its native regeneration capacity. In hematopoietic physiology, its role as a key player in maintaining hematopoietic stem cells in their niche and in regulating the hematopoietic microenvironment is emerging. In the alternative description, MSCs are ubiquitous in connective tissues and are defined by in vitro characteristics and by their use in therapy, which rests on their ability to modulate the function of host tissues rather than on stem cell properties. Here, I discuss how the two views developed, conceptually and experimentally, and attempt to clarify the confusion arising from their collision.
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Affiliation(s)
- Paolo Bianco
- Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy;
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