1
|
Epicoco L, Pellegrino R, Madaghiele M, Friuli M, Giannotti L, Di Chiara Stanca B, Palermo A, Siculella L, Savkovic V, Demitri C, Nitti P. Recent Advances in Functionalized Electrospun Membranes for Periodontal Regeneration. Pharmaceutics 2023; 15:2725. [PMID: 38140066 PMCID: PMC10747510 DOI: 10.3390/pharmaceutics15122725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 11/26/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
Periodontitis is a global, multifaceted, chronic inflammatory disease caused by bacterial microorganisms and an exaggerated host immune response that not only leads to the destruction of the periodontal apparatus but may also aggravate or promote the development of other systemic diseases. The periodontium is composed of four different tissues (alveolar bone, cementum, gingiva, and periodontal ligament) and various non-surgical and surgical therapies have been used to restore its normal function. However, due to the etiology of the disease and the heterogeneous nature of the periodontium components, complete regeneration is still a challenge. In this context, guided tissue/bone regeneration strategies in the field of tissue engineering and regenerative medicine have gained more and more interest, having as a goal the complete restoration of the periodontium and its functions. In particular, the use of electrospun nanofibrous scaffolds has emerged as an effective strategy to achieve this goal due to their ability to mimic the extracellular matrix and simultaneously exert antimicrobial, anti-inflammatory and regenerative activities. This review provides an overview of periodontal regeneration using electrospun membranes, highlighting the use of these nanofibrous scaffolds as delivery systems for bioactive molecules and drugs and their functionalization to promote periodontal regeneration.
Collapse
Affiliation(s)
- Luana Epicoco
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (R.P.); (M.M.); (M.F.); (C.D.)
- Institute of Medical Physics and Biophysics, University of Leipzig, 04103 Leipzig, Germany
| | - Rebecca Pellegrino
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (R.P.); (M.M.); (M.F.); (C.D.)
| | - Marta Madaghiele
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (R.P.); (M.M.); (M.F.); (C.D.)
| | - Marco Friuli
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (R.P.); (M.M.); (M.F.); (C.D.)
| | - Laura Giannotti
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (L.G.); (B.D.C.S.); (L.S.)
| | - Benedetta Di Chiara Stanca
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (L.G.); (B.D.C.S.); (L.S.)
| | - Andrea Palermo
- Implant Dentistry College of Medicine and Dentistry, Birmingham B4 6BN, UK;
| | - Luisa Siculella
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (L.G.); (B.D.C.S.); (L.S.)
| | - Vuk Savkovic
- Clinic and Polyclinic for Oral and Maxillofacial Plastic Surgery, University Hospital Leipzig, 04103 Leipzig, Germany;
| | - Christian Demitri
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (R.P.); (M.M.); (M.F.); (C.D.)
| | - Paola Nitti
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (R.P.); (M.M.); (M.F.); (C.D.)
| |
Collapse
|
2
|
Martin V, Grenho L, Fernandes MH, Gomes PS. Repurposing sarecycline for osteoinductive therapies: an in vitro and ex vivo assessment. J Bone Miner Metab 2023:10.1007/s00774-023-01428-9. [PMID: 37036531 DOI: 10.1007/s00774-023-01428-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 09/06/2022] [Indexed: 04/11/2023]
Abstract
INTRODUCTION Tetracyclines (TCs) embrace a class of broad-spectrum antibiotics with unrelated effects at sub-antimicrobial levels, including an effective anti-inflammatory activity and stimulation of osteogenesis, allowing their repurposing for different clinical applications. Recently, sarecycline (SA)-a new-generation molecule with a narrower antimicrobial spectrum-was clinically approved due to its anti-inflammatory profile and reduced adverse effects verified with prolonged use. Notwithstanding, little is known about its osteogenic potential, previously verified for early generation TCs. MATERIALS AND METHODS Accordingly, the present study is focused on the assessment of the response of human bone marrow-derived mesenchymal stromal cells (hBMSCs) to a concentration range of SA, addressing the metabolic activity, morphology and osteoblastic differentiation capability, further detailing the modulation of Wnt, Hedgehog, and Notch signaling pathways. In addition, an ex vivo organotypic bone development system was established in the presence of SA and characterized by microtomographic and histochemical analysis. RESULTS hBMSCs cultured with SA presented a significantly increased metabolic activity compared to control, with an indistinguishable cell morphology. Moreover, RUNX2 expression was upregulated 2.5-fold, and ALP expression was increased around sevenfold in the presence of SA. Further, GLI2 expression was significantly upregulated, while HEY1 and HNF1A were downregulated, substantiating Hedgehog and Notch signaling pathways' modulation. The ex vivo model developed in the presence of SA presented a significantly enhanced collagen deposition, extended migration areas of osteogenesis, and an increased bone mineral content, substantiating an increased osteogenic development. CONCLUSION Summarizing, SA is a promising candidate for drug repurposing within therapies envisaging the enhancement of bone healing/regeneration.
Collapse
Affiliation(s)
- Victor Martin
- LAQV/REQUIMTE, U. Porto, 4160-007, Porto, Portugal
- BoneLab - Laboratory for Bone Metabolism and Regeneration - Faculty of Dental Medicine, U. Porto, Rua Dr. Manuel Pereira da Silva, 4200-393, Porto, Portugal
| | - Liliana Grenho
- LAQV/REQUIMTE, U. Porto, 4160-007, Porto, Portugal
- BoneLab - Laboratory for Bone Metabolism and Regeneration - Faculty of Dental Medicine, U. Porto, Rua Dr. Manuel Pereira da Silva, 4200-393, Porto, Portugal
| | - Maria H Fernandes
- LAQV/REQUIMTE, U. Porto, 4160-007, Porto, Portugal
- BoneLab - Laboratory for Bone Metabolism and Regeneration - Faculty of Dental Medicine, U. Porto, Rua Dr. Manuel Pereira da Silva, 4200-393, Porto, Portugal
| | - Pedro S Gomes
- LAQV/REQUIMTE, U. Porto, 4160-007, Porto, Portugal.
- BoneLab - Laboratory for Bone Metabolism and Regeneration - Faculty of Dental Medicine, U. Porto, Rua Dr. Manuel Pereira da Silva, 4200-393, Porto, Portugal.
| |
Collapse
|
3
|
Toledano M, Vallecillo C, Gutierrez-Corrales A, Torres-Lagares D, Toledano-Osorio M, Serrera-Figallo MA. Histomorphometric Analysis of Differential Regional Bone Regeneration Induced by Distinct Doped Membranes. Polymers (Basel) 2022; 14:polym14102078. [PMID: 35631960 PMCID: PMC9147672 DOI: 10.3390/polym14102078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/13/2022] [Accepted: 05/17/2022] [Indexed: 11/20/2022] Open
Abstract
Our objective is to evaluate the regional regenerative potential of calvarial bone in critical-sized defects in a rabbit model using novel nanostructured silica-loaded membranes doped with zinc or doxycycline. Nanostructured membranes of (MMA)1-co-(HEMA)1/(MA)3-co-(HEA)2 loaded with 5 wt% of SiO2 nanoparticles (HOOC-Si-Membranes) were doped with zinc (Zn-HOOC-Si-Membrane) or doxycycline (Dox-HOOC-Si-Membrane). Critical bone defects were created on six New-Zealand-breed rabbit skulls and covered with the membranes. A sham defect without a membrane was used as the control. After six weeks, a histological analysis (toluidine blue technique) was employed to determine the area percentages of newly formed bone, osteoid bone, and soft tissue. The measurements were performed by dividing the total defect area into top (close to the membrane) and bottom (close to the dura mater) regions, or peripheral (adjacent to the old bone) and central (the sum of the remaining zones) regions. The peripheral regions of the defects showed higher osteogenic capacity than the central areas when the membranes were present. The proportion of new bone adjacent to the dura was similar to that adjacent to the membrane only when the HOOC-Si-Membranes and Zn-HOOC-Si-Membranes were used, indicating a direct osteoinductive effect of the membranes.
Collapse
Affiliation(s)
- Manuel Toledano
- Faculty of Dentistry, Colegio Máximo de Cartuja s/n, University of Granada, 18071 Granada, Spain; (M.T.); (C.V.)
| | - Cristina Vallecillo
- Faculty of Dentistry, Colegio Máximo de Cartuja s/n, University of Granada, 18071 Granada, Spain; (M.T.); (C.V.)
| | - Aida Gutierrez-Corrales
- Faculty of Dentistry, Oral Surgery Section, University of Sevilla, Avicena s/n, 41009 Sevilla, Spain; (A.G.-C.); (D.T.-L.); (M.-A.S.-F.)
| | - Daniel Torres-Lagares
- Faculty of Dentistry, Oral Surgery Section, University of Sevilla, Avicena s/n, 41009 Sevilla, Spain; (A.G.-C.); (D.T.-L.); (M.-A.S.-F.)
| | - Manuel Toledano-Osorio
- Faculty of Dentistry, Colegio Máximo de Cartuja s/n, University of Granada, 18071 Granada, Spain; (M.T.); (C.V.)
- Correspondence: ; Tel.: +34-958-243-789
| | - María-Angeles Serrera-Figallo
- Faculty of Dentistry, Oral Surgery Section, University of Sevilla, Avicena s/n, 41009 Sevilla, Spain; (A.G.-C.); (D.T.-L.); (M.-A.S.-F.)
| |
Collapse
|
4
|
Gao H, Ge K, Xu Y, Wang Y, Lu M, Wei Y, Zhu Q, Han X, Huang Q, Cao Z. Controlled release of minocycline in hydroxyapatite/chitosan composite for periodontal bone defect repair. Dent Mater J 2022; 41:346-352. [PMID: 35321974 DOI: 10.4012/dmj.2021-217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim was to obtain bone repair materials with sustained release of minocycline and evaluate the effect in periodontal bone defect repair. Two complex material, hydroxyapatite/chitosan (HA/CS) and minocycline-hydroxyapatite/chitosan (Mino-HA/CS), were prepared by the co-precipitation method. The physical and chemical property, cytotoxicity, release of minocycline and the bacteriostasis examination of the materials were evaluated, they were applied to the rabbit model of mandible bone defect to evaluate their effects on the regeneration of periodontal bone defect. After minocycline was added to HA/CS, the setting time of the material was prolonged, the compressive strength was reduced and the pore size and porosity were increased significantly. The pH value did not change obviously and stayed in the neutral range. Mino-HA/CS could promote the growth of osteoblasts effectively compared with control medium. In vivo, Mino-HA/CS material showed better effect of promoting periodontal bone formation.
Collapse
Affiliation(s)
- Haochen Gao
- Department of Stomatology, Changzheng Hospital, Naval Medical University.,Department of Stomatology, Changhai Hospital, Naval Medical University
| | - Kuikui Ge
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University
| | - Yuqiang Xu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University
| | - Yihan Wang
- Shanghai High-Tech United Bio-Technological R&D Co., Ltd
| | - Min Lu
- Shanghai High-Tech United Bio-Technological R&D Co., Ltd
| | - Yibo Wei
- Department of Stomatology, Changhai Hospital, Naval Medical University
| | - Qiang Zhu
- Department of Stomatology, Changhai Hospital, Naval Medical University
| | - Xu Han
- Department of Stomatology, Changhai Hospital, Naval Medical University
| | - Qingshan Huang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University.,Shanghai High-Tech United Bio-Technological R&D Co., Ltd
| | - Zhizhong Cao
- Department of Stomatology, Changhai Hospital, Naval Medical University
| |
Collapse
|
5
|
Carvalho ÉBS, Veronesi GF, Manfredi GGP, Damante CA, Sant'Ana ACP, Greghi SLA, Zangrando MSR, Consolaro A, Rezende MLR. Bone demineralization improves onlay graft consolidation: A histological study in rat calvaria. J Periodontol 2020; 92:1-10. [PMID: 32997353 DOI: 10.1002/jper.20-0390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/28/2020] [Accepted: 08/31/2020] [Indexed: 11/08/2022]
Abstract
BACKGROUND Previous data suggest that bone demineralization may promote bone graft consolidation as well as proliferation and differentiation of pre-osteoblasts, but the biological mechanisms involved in this process need to be clarified. This study investigated the effects of bone demineralization with citric acid (CA) and tetracycline (TCN) on the repair of onlay bone grafts. METHODS Onlay bone grafts were performed on the calvaria of 126 Wistar rats. The contacting surfaces between bone graft and receptor bone bed were demineralized for 15, 30, and 60 seconds with TCN (50 mg/mL), or 10% CA, (pH 1), constituting the following test groups (n = 18): TCN15, TCN30, TCN60, CA15, CA30, and CA60. Control grafts (C) were performed without demineralization (n = 18). After 7, 30, and 60 days, biopsies were obtained for quantitative and qualitative histological analysis (a = 6). RESULTS Demineralization accelerated the bone repair early from 7 days of healing. Higher percentage area of newly formed bone was observed in CA15 and TCN60 groups when compared to C in all evaluation periods (P = 0.02). At 30 days, C specimens had lower percentage of consolidated surfaces than TCN60, TCN30 and CA15 (P = 0.0015). At 60 days, CA15, CA60, and TCN60 presented bone surfaces almost completely filled by newly formed bone, against about 75% in C specimens (P = 0.0015). CONCLUSIONS Both CA and TCN were effective in accelerating osteogenesis at the interface between bone grafts and receptor bone beds, especially when applied for 15 seconds and 60 seconds, respectively.
Collapse
Affiliation(s)
- Érika B S Carvalho
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Giovana F Veronesi
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Gustavo G P Manfredi
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Carla A Damante
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Adriana C P Sant'Ana
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Sebastião L A Greghi
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Mariana S R Zangrando
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Alberto Consolaro
- Department of Stomatology, Division of Pathology, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Maria L R Rezende
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| |
Collapse
|
6
|
Rojas-Paulús JE, Manfredi GGP, Salmeron S, Consolaro A, Sant'Ana ACP, Zangrando MSR, Damante CA, Greghi SLA, Rezende MLR. Citric acid, but not tetracycline, improves the microscopic pattern of healing of particulate autogenous bone grafts in critical-size defects. J Periodontol 2020; 92:678-688. [PMID: 32902871 DOI: 10.1002/jper.20-0363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/24/2020] [Accepted: 08/14/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND Bone demineralization has shown to be advantageous in autogenous onlay bone grafts and in pre-osteoblasts cultures, but such procedure has never been evaluated in particulate bone grafts. This study aimed to investigate the role of two demineralizing agents in the repair of the 8-mm critical-size defects in rats' calvaria. METHODS Eighty adult male Wistar rats were randomly assigned to one of eight groups as follows: particulate autogenous bone demineralized with citric acid for 15 seconds (CA15), 30 seconds (CA30), or 60 seconds (CA60); particulate autogenous bone demineralized with tetracycline hydrochloride for 15 seconds (TCN15), 30 seconds (TCN30), or 60 seconds (TCN60); blood clot (NC), and non-demineralized autogenous bone (PC). The calvariae were harvested at 30 and 60 postoperative days (n = 5) for blinded histological and histometric analysis of the percentage area of newly formed bone within the defects. RESULTS In the NC and TCN groups, bone formation was limited to the margins of the defects at 30 postoperative days, whereas complete closure was present in all the specimens from CA15 group. Both at 30 and 60 postoperative days, histomorphometry showed significant higher area of newly formed bone in specimens demineralized with CA than in those demineralized with TCN or non-demineralized (P < 0.05). TCN appeared to impair bone neoformation, as its use produced similar or inferior results compared to blood clot. CONCLUSIONS Demineralization of particulate bone grafts with CA during 15s enhanced the regeneration of critical-size defects and may be a promising adjuvant in regenerative procedures. TCN seems to be improper for this purpose.
Collapse
Affiliation(s)
- Jefrey E Rojas-Paulús
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Gustavo G P Manfredi
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Samira Salmeron
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Alberto Consolaro
- Department of Stomatology, Division of Pathology, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Adriana C P Sant'Ana
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Mariana S R Zangrando
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Carla A Damante
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Sebastião L A Greghi
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Maria L R Rezende
- Department of Prosthodontics and Periodontics, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| |
Collapse
|
7
|
State of the Art on Biomaterials for Soft Tissue Augmentation in the Oral Cavity. Part II: Synthetic Polymers-Based Biomaterials. Polymers (Basel) 2020; 12:polym12081845. [PMID: 32824577 PMCID: PMC7465038 DOI: 10.3390/polym12081845] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/13/2020] [Accepted: 08/15/2020] [Indexed: 01/10/2023] Open
Abstract
Most of the polymers used as biomaterials for scaffolds are naturally occurring, synthetic biodegradable, and synthetic non-biodegradable polymers. Since synthetic polymers can be adapted for obtaining singular desired characteristics by applying various fabrication techniques, their use has increased in the biomedical field, in dentistry in particular. The manufacturing methods of these new structures include many processes, such as electrospinning, 3D printing, or the use of computer-aided design/computer-aided manufacturing (CAD/CAM). Synthetic polymers show several drawbacks that can limit their use in clinical applications, such as the lack of cellular recognition, biodegradability, and biocompatibility. Moreover, concerning biodegradable polymers, the time for matrix resorption is not predictable, and non-resorbable matrices are preferred for soft tissue augmentation in the oral cavity. This review aimed to determine a new biomaterial to offset the present shortcomings in the oral environment. Researchers have recently proposed a novel non-resorbable composite membrane manufactured via electrospinning that has allowed obtaining remarkable in vivo outcomes concerning angiogenesis and immunomodulation throughout the polarization of macrophages. A prototype of the protocol for in vitro and in vivo experimentation with hydrogels is explained in order to encourage innovation into the development of promising biomaterials for soft tissue augmentation in the near future.
Collapse
|
8
|
Toledano M, Toledano-Osorio M, Osorio R, Carrasco-Carmona Á, Gutiérrez-Pérez JL, Gutiérrez-Corrales A, Serrera-Figallo MA, Lynch CD, Torres-Lagares D. Doxycycline and Zinc Loaded Silica-Nanofibrous Polymers as Biomaterials for Bone Regeneration. Polymers (Basel) 2020; 12:polym12051201. [PMID: 32466191 PMCID: PMC7285172 DOI: 10.3390/polym12051201] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/12/2020] [Accepted: 05/22/2020] [Indexed: 12/13/2022] Open
Abstract
The main target of bone tissue engineering is to design biomaterials that support bone regeneration and vascularization. Nanostructured membranes of (MMA)1-co-(HEMA)1/(MA)3-co-(HEA)2 loaded with 5% wt of SiO2-nanoparticles (HOOC-Si-Membrane) were doped with zinc (Zn-HOOC-Si-Membrane) or doxycycline (Dox-HOOC-Si-Membrane). Critical bone defects were effectuated on six New Zealand-bred rabbit skulls and covered with the membranes. After six weeks, the bone architecture was evaluated with micro computed tomography. Three histological analyses were utilized to analyse bone regeneration, including von Kossa silver nitrate, toluidine blue and fluorescence. All membrane-treated defects exhibited higher number of osteocytes and bone perimeter than the control group without the membrane. Zn-HOOC-Si-Membranes induced higher new bone and osteoid area than those treated with HOOC-Si-Membranes, and control group, respectively. Zn-HOOC-Si-Membranes and Dox-HOOC-Si-Membranes attained the lowest ratio M1 macrophages/M2 macrophages. Dox-HOOC-Si-Membranes caused the lowest number of osteoclasts, and bone density. At the trabecular new bone, Zn-HOOC-Si-Membranes produced the highest angiogenesis, bone thickness, connectivity, junctions and branches. Zn-HOOC-Si-Membranes enhanced biological activity, attained a balanced remodeling, and achieved the greatest regenerative efficiency after osteogenesis and angiogenesis assessments. The bone-integrated Zn-HOOC-Si-Membranes can be considered as bioactive modulators provoking a M2 macrophages (pro-healing cells) increase, being a potential biomaterial for promoting bone repair.
Collapse
Affiliation(s)
- Manuel Toledano
- Dental Materials Section, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.T.); (M.T.-O.); (Á.C.-C.)
| | - Manuel Toledano-Osorio
- Dental Materials Section, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.T.); (M.T.-O.); (Á.C.-C.)
| | - Raquel Osorio
- Dental Materials Section, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.T.); (M.T.-O.); (Á.C.-C.)
- Correspondence: ; Tel.: +34-958243789
| | - Álvaro Carrasco-Carmona
- Dental Materials Section, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.T.); (M.T.-O.); (Á.C.-C.)
| | - José-Luis Gutiérrez-Pérez
- Oral Surgery Section, Faculty of Dentistry, University of Sevilla, Avicena s/n, 41009 Sevilla, Spain; (J.-L.G.-P.); (A.G.-C.); (M.-A.S.-F.); (D.T.-L.)
| | - Aida Gutiérrez-Corrales
- Oral Surgery Section, Faculty of Dentistry, University of Sevilla, Avicena s/n, 41009 Sevilla, Spain; (J.-L.G.-P.); (A.G.-C.); (M.-A.S.-F.); (D.T.-L.)
| | - María-Angeles Serrera-Figallo
- Oral Surgery Section, Faculty of Dentistry, University of Sevilla, Avicena s/n, 41009 Sevilla, Spain; (J.-L.G.-P.); (A.G.-C.); (M.-A.S.-F.); (D.T.-L.)
| | - Christopher D. Lynch
- University Dental School & Hospital/University College Cork, Wilton, T12 E8YV Cork, Ireland;
| | - Daniel Torres-Lagares
- Oral Surgery Section, Faculty of Dentistry, University of Sevilla, Avicena s/n, 41009 Sevilla, Spain; (J.-L.G.-P.); (A.G.-C.); (M.-A.S.-F.); (D.T.-L.)
| |
Collapse
|
9
|
Isik G, Hasirci N, Tezcaner A, Kiziltay A. Multifunctional periodontal membrane for treatment and regeneration purposes. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520911659] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Periodontitis is a chronic inflammatory disease that causes gum tissue degeneration and alveolar bone and tooth loss. The aim of this study is to develop a multifunctional matrix for the treatment of periodontitis and enhancement of regeneration of the periodontal tissue. The matrix was prepared from vitamin E containing hydrogel made of alginate and gelatin, and doxycycline HCl containing methoxy poly(ethylene glycol)-block-polycaprolactone micelles. Methoxy poly(ethylene glycol)-block-polycaprolactone was synthesized with ring-opening polymerization technique and characterized by proton nuclear magnetic resonance (1H NMR), Fourier-transform infrared spectroscopy, differential scanning calorimetry, and gel permeation chromatography. Micelles were characterized by measuring zeta potential, hydrodynamic diameter, drug encapsulation efficiency, drug loading capacity, and in vitro drug-release kinetics. Micelles were obtained with an average size of 164 nm and drug loading amount of 5.8%. The activity of doxycycline HCl–loaded micelles and vitamin E containing hydrogels was determined against Escherichia coli ( E. coli) and Staphylococcus aureus ( S. aureus) with disk diffusion method. Bio-efficacy of micelle-loaded alginate–gelatin hydrogels were tested in vitro using L929 fibroblasts and dental pulp stem cells. Doxycycline HCl–loaded micelles and vitamin E containing hydrogels showed a sustained release and exhibited inhibition zone against E. coli and S. aureus. Hydrogels with vitamin E and doxycycline HCl–loaded micelles promoted osteogenic differentiation of dental pulp stem cells. Results suggest that alginate–gelatin hydrogels containing doxycycline HCl–loaded micelles and vitamin E can be good candidates for the treatment of periodontitis and tissue regeneration.
Collapse
Affiliation(s)
- Gulhan Isik
- Graduate Department of Biotechnology, Middle East Technical University (METU), Ankara, Turkey
- BIOMATEN-Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey
| | - Nesrin Hasirci
- Graduate Department of Biotechnology, Middle East Technical University (METU), Ankara, Turkey
- BIOMATEN-Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey
- Department of Chemistry, Middle East Technical University (METU), Ankara, Turkey
- Near East University, Tissue Engineering and Biomaterial Research Center, Nicosia, TRNC, Mersin 10, Turkey
| | - Aysen Tezcaner
- Graduate Department of Biotechnology, Middle East Technical University (METU), Ankara, Turkey
- BIOMATEN-Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey
- Department of Engineering Sciences, Middle East Technical University (METU), Ankara, Turkey
| | - Aysel Kiziltay
- BIOMATEN-Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University (METU), Ankara, Turkey
- Central Laboratory, Middle East Technical University (METU), Ankara, Turkey
| |
Collapse
|
10
|
Tóth F, Gáll JM, Tőzsér J, Hegedűs C. Effect of inducible bone morphogenetic protein 2 expression on the osteogenic differentiation of dental pulp stem cells in vitro. Bone 2020; 132:115214. [PMID: 31884130 DOI: 10.1016/j.bone.2019.115214] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 12/17/2019] [Accepted: 12/23/2019] [Indexed: 01/09/2023]
Abstract
Bone morphogenetic protein 2 (BMP-2) is a member of the transforming growth factor-β superfamily, it is known to be a factor involved in skeletal development and capable of inducing in vitro osteogenic differentiation of mesenchymal stem cells (MSCs). Dental pulp stem cells (DPSCs) isolated from extracted third molar teeth are an ideal resource for bone tissue engineering and regeneration applications, due to their convenient isolation, safe cryopreservation, and easy maintenance in cell cultures. The aims of this study were to deliver BMP-2 under control of the tetracycline-inducible (tet-on) promoter into dental pulp stem cells and to examine whether these BMP-2 expressing cell lines are capable of promoting osteogenic differentiation in vitro. BMP-2 gene was cloned into the lentiviral transfer plasmid pTet-IRES-EGFP and used to establish the DPSC-BMP-2 cell line. DPSC, DPSC-GFP (mock) and DPSC-BMP-2 cell lines were cultured in growth medium or osteogenic medium in the presence or absence of 100 ng/ml doxycycline. To assess differentiation, alkaline phosphatase activity, calcium accumulation and gene transcription levels of different genes involved in osteogenic differentiation (BMP-2, Runx2, alkaline phosphatase, and noggin) were measured. Doxycycline-induced BMP-2 expression induced the differentiation of DPSCs into the preosteoblastic stage but could not favor the further maturation into osteoblasts and osteocytes. We found that while Runx2 gene transcription was continuously upregulated in doxycycline-treated DPSC-BMP-2 cells, the alkaline phosphatase activity and the accumulation of minerals were reduced. As a result of the increased BMP-2 expression, the transcription level of the BMP antagonist noggin was also upregulated, and probably caused the observed effects regarding alkaline phosphatase (ALP) activity and mineral deposition. Our study shows that this system is effective in controlling transgene expression in DPSC cell line. Exploration of all known factors affecting osteogenic differentiation and their interactions is of major importance for the field of regenerative medicine. As the metabolic reaction to the upregulated transgene transcription appears to be cell line-specific, a wrongly selected target gene and/or regulation system could have adverse effects on differentiation.
Collapse
Affiliation(s)
- Ferenc Tóth
- Department of Biomaterials and Prosthetic Dentistry, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary.
| | - József M Gáll
- Department of Applied Mathematics and Probability Theory, Faculty of Informatics, University of Debrecen, Debrecen, Hungary.
| | - József Tőzsér
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
| | - Csaba Hegedűs
- Department of Biomaterials and Prosthetic Dentistry, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary.
| |
Collapse
|
11
|
Manfredi GGDP, Tokuhara CK, Salmeron S, Carvalho ÉBS, Liboa‐Filho PN, Damante CA, Sant'Ana ACP, Zangrando MSR, Greghi SLA, Rezende MLR. Bone demineralization promotes superior spread of preosteoblast in culture. Microsc Res Tech 2019; 82:1004-1011. [DOI: 10.1002/jemt.23247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 01/23/2019] [Accepted: 02/12/2019] [Indexed: 11/08/2022]
Affiliation(s)
| | - Cíntia Kazuko Tokuhara
- Department of Biological Sciences, Bauru School of DentistryUniversity of São Paulo Bauru São Paulo Brazil
| | - Samira Salmeron
- Department of Prosthodontics and Periodontics, Piracicaba Dental SchoolUniversity of Campinas Piracicaba São Paulo Brazil
| | - Érika Beatriz Spada Carvalho
- Department of Prosthodontics and Periodontics, Bauru School of DentistryUniversity of São Paulo Bauru São Paulo Brazil
| | | | - Carla Andreotti Damante
- Department of Prosthodontics and Periodontics, Bauru School of DentistryUniversity of São Paulo Bauru São Paulo Brazil
| | | | | | - Sebastião Luis Aguiar Greghi
- Department of Prosthodontics and Periodontics, Bauru School of DentistryUniversity of São Paulo Bauru São Paulo Brazil
| | - Maria Lúcia Rubo Rezende
- Department of Prosthodontics and Periodontics, Bauru School of DentistryUniversity of São Paulo Bauru São Paulo Brazil
| |
Collapse
|
12
|
ÜN E, ÖZEÇ İ, TAŞDEMİR U, KIRTAY M, ESEN HH, AVUNDUK MC. EFFECT OF LOCAL RIFAMYCIN APPLICATION ON EXPRESSION OF BMP-2 AND BONE REGENERATION. CUMHURIYET DENTAL JOURNAL 2017. [DOI: 10.7126/cumudj.345934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
13
|
Lu H, Liu Y, Guo J, Wu H, Wang J, Wu G. Biomaterials with Antibacterial and Osteoinductive Properties to Repair Infected Bone Defects. Int J Mol Sci 2016; 17:334. [PMID: 26950123 PMCID: PMC4813196 DOI: 10.3390/ijms17030334] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 02/23/2016] [Accepted: 02/29/2016] [Indexed: 12/16/2022] Open
Abstract
The repair of infected bone defects is still challenging in the fields of orthopedics, oral implantology and maxillofacial surgery. In these cases, the self-healing capacity of bone tissue can be significantly compromised by the large size of bone defects and the potential/active bacterial activity. Infected bone defects are conventionally treated by a systemic/local administration of antibiotics to control infection and a subsequent implantation of bone grafts, such as autografts and allografts. However, these treatment options are time-consuming and usually yield less optimal efficacy. To approach these problems, novel biomaterials with both antibacterial and osteoinductive properties have been developed. The antibacterial property can be conferred by antibiotics and other novel antibacterial biomaterials, such as silver nanoparticles. Bone morphogenetic proteins are used to functionalize the biomaterials with a potent osteoinductive property. By manipulating the carrying modes and release kinetics, these biomaterials are optimized to maximize their antibacterial and osteoinductive functions with minimized cytotoxicity. The findings, in the past decade, have shown a very promising application potential of the novel biomaterials with the dual functions in treating infected bone defects. In this review, we will summarize the current knowledge of novel biomaterials with both antibacterial and osteoinductive properties.
Collapse
Affiliation(s)
- Haiping Lu
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Yi Liu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute, Amsterdam 1081LA, The Netherlands.
| | - Jing Guo
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Huiling Wu
- The First Affiliated Hospital, Medical School, Zhejiang University, Hangzhou 310003, China.
| | - Jingxiao Wang
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325000, China.
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute, Amsterdam 1081LA, The Netherlands.
| |
Collapse
|
14
|
Pasupuleti MK, Molahally SS, Salwaji S. Ethical guidelines, animal profile, various animal models used in periodontal research with alternatives and future perspectives. J Indian Soc Periodontol 2016; 20:360-368. [PMID: 28298815 PMCID: PMC5341308 DOI: 10.4103/0972-124x.186931] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Laboratory animal models serve as a facilitator to investigate the etiopathogenesis of periodontal disease, are used to know the efficacy of reconstructive and regenerative procedures, and are also helpful in evaluation of newer therapeutic techniques including laser and implant therapies prior to application in the human beings. The aim of this review is to know the different animal models used in various specialties of dental research and to know the ethical guidelines prior to the usage of experimental models with main emphasis on how to refine, replace, and reduce the number of animal models usage in the laboratory. An online search for experimental animal models used in dental research was performed using MEDLINE/PubMed database. Publications from 2009 to May 2013 in the specialty of periodontics were included in writing this review. A total of 652 references were published in PubMed/MEDLINE databases based on the search terms used. Out of 245 studies, 241 were related to the periodontal research published in English from 2009 to 2013. Relevant papers were chosen according to the inclusion and exclusion criteria. After extensive electronic and hand search on animal models, it has been observed that various animal models were used in dental research. Search on animal models used for dental research purpose revealed that various animals such as rats, mice, guinea pigs, rabbit, beagle dogs, goats, and nonhuman primates were extensively used. However, with the new advancement of ex vivo animal models, it has become easy to investigate disease pathogenesis and to test the efficacy of newer therapeutic modalities with the reduced usage of animal models. This review summarized the large amount of literature on animal models used in periodontal research with main emphasis on ethical guidelines and on reducing the animal model usage in future perspective.
Collapse
Affiliation(s)
- Mohan Kumar Pasupuleti
- Department of Periodontics, St. Joseph Dental College, Duggirala, Eluru, West Godavari, Andhra Pradesh, India
| | | | - Supraja Salwaji
- Department of Oral and Maxillofacial Pathology, St. Joseph Dental College, Duggirala, Eluru, West Godavari, Andhra Pradesh, India
| |
Collapse
|
15
|
Silva AC, Oliveira MR, Amaral LFA, Ferreira S, Garcia IR, Mariano RC. Effect of Doxycycline in Gel Form on Bone Regeneration: Histomorphometric and Tomographic Study in Rat Calvaria. J Periodontol 2016; 87:74-82. [DOI: 10.1902/jop.2015.150343] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
16
|
Hecht E, Freise C, Websky KV, Nasser H, Kretzschmar N, Stawowy P, Hocher B, Querfeld U. The matrix metalloproteinases 2 and 9 initiate uraemic vascular calcifications. Nephrol Dial Transplant 2015; 31:789-97. [PMID: 26333546 DOI: 10.1093/ndt/gfv321] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 07/30/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The matrix metalloproteinases (MMP) MMP-2 and MMP-9 are physiological regulators of vascular remodelling. Their dysregulation could contribute to vascular calcification. We examined the role of the MMP-2 and MMP-9 in uraemic vascular calcification in vivo and in vitro. METHODS The impact of pharmacological MMP inhibition on the development of media calcifications was explored in an aggressive animal model of uraemic calcification. In addition, the selective effects of addition and inhibition, respectively, of MMP-2 and MMP-9 on calcium-/phosphate-induced calcifications were studied in a murine cell line of vascular smooth muscle cells (VSMCs). RESULTS High-dose calcitriol treatment of uraemic rats given a high phosphate diet induced massive calcifications, apoptosis and increased gene expressions of MMP-2, MMP-9 and of osteogenic transcription factors and proteins in aortic VSMC. The MMP inhibitor doxycycline prevented the VSMC transdifferentiation to osteoblastic cells, suppressed transcription of mediators of matrix remodelling and almost completely blocked aortic calcifications while further increasing apoptosis. Similarly, specific inhibitors of either MMP-2 or -9, or of both gelatinases (Ro28-2653) and a selective knockdown of MMP-2/-9 mRNA expression blocked calcification of murine VSMC induced by calcification medium (CM). In contrast to MMP inhibition, recombinant MMP-2 or MMP-9 enhanced CM-induced calcifications and the secretion of gelatinases. CONCLUSIONS These data indicate that both gelatinases provide essential signals for phenotypic VSMC conversion, matrix remodelling and the initiation of vascular calcification. Their inhibition seems a promising strategy in the prevention of vascular calcifications.
Collapse
Affiliation(s)
- Eva Hecht
- Center for Cardiovascular Research, Charité-University Medicine, Campus Mitte, Berlin, Germany Department of Pediatric Nephrology, Charité-University Medicine, Campus Virchow Clinic, Berlin, Germany
| | - Christian Freise
- Center for Cardiovascular Research, Charité-University Medicine, Campus Mitte, Berlin, Germany Department of Pediatric Nephrology, Charité-University Medicine, Campus Virchow Clinic, Berlin, Germany
| | - Karoline V Websky
- Institute of Nutritional Science, University of Potsdam, Potsdam-Rehbrücke, Germany
| | - Hamoud Nasser
- Center for Cardiovascular Research, Charité-University Medicine, Campus Mitte, Berlin, Germany Department of Pediatric Nephrology, Charité-University Medicine, Campus Virchow Clinic, Berlin, Germany
| | - Nadja Kretzschmar
- Center for Cardiovascular Research, Charité-University Medicine, Campus Mitte, Berlin, Germany Department of Pediatric Nephrology, Charité-University Medicine, Campus Virchow Clinic, Berlin, Germany
| | - Philipp Stawowy
- Center for Cardiovascular Research, Charité-University Medicine, Campus Mitte, Berlin, Germany Department of Medicine and Cardiology, German Heart Institute, Berlin, Germany
| | - Berthold Hocher
- Institute of Nutritional Science, University of Potsdam, Potsdam-Rehbrücke, Germany
| | - Uwe Querfeld
- Center for Cardiovascular Research, Charité-University Medicine, Campus Mitte, Berlin, Germany Department of Pediatric Nephrology, Charité-University Medicine, Campus Virchow Clinic, Berlin, Germany
| |
Collapse
|
17
|
Aryal R, Chen XP, Fang C, Hu YC. Bone morphogenetic protein-2 and vascular endothelial growth factor in bone tissue regeneration: new insight and perspectives. Orthop Surg 2015; 6:171-8. [PMID: 25179350 DOI: 10.1111/os.12112] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 05/18/2014] [Indexed: 12/20/2022] Open
Abstract
The study of bone tissue regeneration in orthopaedic diseases has stimulated great interest among bone tissue engineering specialists and orthopaedic surgeons. Combinations of biomaterials, growth factors and stem cells for repairing bone have been much studied and researched, yet remain a challenge for both scientists and clinicians pursuing regenerative medicine. The purpose of this review was to elucidate the role of sequential release of bone morphogenetic protein-2 and vascular endothelial growth factor in producing better outcomes in the field of bone tissue regeneration.
Collapse
|
18
|
TLR signaling that induces weak inflammatory response and SHIP1 enhances osteogenic functions. Bone Res 2014; 2:14031. [PMID: 26273527 PMCID: PMC4472124 DOI: 10.1038/boneres.2014.31] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 08/12/2014] [Accepted: 09/03/2014] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptor (TLR)-mediated inflammatory response could negatively affect bone metabolism. In this study, we determined how osteogenesis is regulated during inflammatory responses that are downstream of TLR signaling. Human primary osteoblasts were cultured in collagen gels. Pam3CSK4 (P3C) and Escherichia coli lipopolysaccharide (EcLPS) were used as TLR2 and TLR4 ligand respectively. Porphyromonas gingivalis LPS having TLR2 activity with either TLR4 agonism (Pg1690) or TLR4 antagonism (Pg1449) and mutant E. coli LPS (LPxE/LPxF/WSK) were used. IL-1β, SH2-containing inositol phosphatase-1 (SHIP1) that has regulatory roles in osteogenesis, alkaline phosphatase and mineralization were analyzed. 3α-Aminocholestane (3AC) was used to inhibit SHIP1. Our results suggest that osteoblasts stimulated by P3C, poorly induced IL-1β but strongly upregulated SHIP1 and enhanced osteogenic mediators. On the contrary, EcLPS significantly induced IL-1β and osteogenic mediators were not induced. While Pg1690 downmodulated osteogenic mediators, Pg1449 enhanced osteogenic responses, suggesting that TLR4 signaling annuls osteogenesis even with TLR2 activity. Interestingly, mutant E. coli LPS that induces weak inflammation upregulated osteogenesis, but SHIP1 was not induced. Moreover, inhibiting SHIP1 significantly upregulated TLR2-mediated inflammatory response and downmodulated osteogenesis. In conclusion, these results suggest that induction of weak inflammatory response through TLR2 (with SHIP1 activity) and mutant TLR4 ligands could enhance osteogenesis.
Collapse
|
19
|
Wilson CG, Martín-Saavedra FM, Vilaboa N, Franceschi RT. Advanced BMP gene therapies for temporal and spatial control of bone regeneration. J Dent Res 2013; 92:409-17. [PMID: 23539558 DOI: 10.1177/0022034513483771] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Spatial and temporal patterns of bone morphogenetic protein (BMP) signaling are crucial to the assembly of appropriately positioned and shaped bones of the face and head. This review advances the hypothesis that reconstitution of such patterns with cutting-edge gene therapies will transform the clinical management of craniofacial bone defects attributed to trauma, disease, or surgical resection. Gradients in BMP signaling within developing limbs and orofacial primordia regulate proliferation and differentiation of mesenchymal progenitors. Similarly, vascular and mesenchymal cells express BMPs in various places and at various times during normal fracture healing. In non-healing fractures of long bones, BMP signaling is severely attenuated. Devices that release recombinant BMPs promote healing of bone in spinal fusions and, in some cases, of open fractures, but cannot control the timing and localization of BMP release. Gene therapies with regulated expression systems may provide substantial improvements in efficacy and safety compared with protein-based therapies. Synthetic gene switches, activated by pharmacologics or light or hyperthermic stimuli, provide several avenues for the non-invasive regulation of the expression of BMP transgenes in both time and space. Through new gene therapy platforms such as these, active control over BMP signaling can be achieved to accelerate bone regeneration.
Collapse
Affiliation(s)
- C G Wilson
- Center for Craniofacial Regeneration, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | | | | | | |
Collapse
|