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Preclinical Assessment of the Proliferation Capacity of Gingival and Periodontal Ligament Stem Cells from Diabetic Patients.

ABSTRACT: BACKGROUND:Stem cells have recently received great interest as potential therapeutics alternative for a variety of diseases. The oral and maxillofacial region, in particular, encompasses a variety of distinctive mesenchymal (MSC) populations and is characterized by a potent multilineage differentiation capacity. AIM:In this report, we aimed to investigate the effect of diabetes on the proliferation potential of stem cells isolated from controlled diabetic patients (type 2) and healthy individuals. SUBJECTS & METHODS:The proliferation rate of gingival and periodontal derived stem cells isolated from diabetic & healthy individuals were compared using MTT Assay. Expression levels of Survivin in isolated stem cells from all groups were measured by qRt - PCR. RESULTS:There was a significantly positive correlation between proliferation rate and expression of Survivin in all groups which sheds light on the importance of Survivin as a reliable indicator of proliferation. The expression of Survivin further confirmed the proliferation results from MTT Assay where the expression of stem cells from non - diabetic individuals was higher than diabetic patients. CONCLUSION:Taking together all the results, it could be concluded that PDLSC and GSC are promising candidates for autologous regenerative therapy due to their ease of accessibility in addition to their high proliferative rates.

SUBMITTER: Assem M

PROVIDER: S-EPMC5839427 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

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Preclinical Assessment of the Proliferation Capacity of Gingival and Periodontal Ligament Stem Cells from Diabetic Patients.

Assem Mostafa M Kamal Samia S Sabry Dina D Soliman Nadia N Aly Riham M RM

Open access Macedonian journal of medical sciences 20180201 2

<h4>Background</h4>Stem cells have recently received great interest as potential therapeutics alternative for a variety of diseases. The oral and maxillofacial region, in particular, encompasses a variety of distinctive mesenchymal (MSC) populations and is characterized by a potent multilineage differentiation capacity.<h4>Aim</h4>In this report, we aimed to investigate the effect of diabetes on the proliferation potential of stem cells isolated from controlled diabetic patients (type 2) and hea ...[more]

PMID: 29531583

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Project description:Tendon injuries are often associated with significant dysfunction and disability due to tendinous tissue's very limited self-repair capacity and propensity for scar formation. Dental-derived mesenchymal stem cells (MSCs) in combination with appropriate scaffold material present an alternative therapeutic option for tendon repair/regeneration that may be advantageous compared to other current treatment modalities. The MSC delivery vehicle is the principal determinant for successful implementation of MSC-mediated regenerative therapies. In the current study, a co-delivery system based on TGF-?3-loaded RGD-coupled alginate microspheres was developed for encapsulating periodontal ligament stem cells (PDLSCs) or gingival mesenchymal stem cells (GMSCs). The capacity of encapsulated dental MSCs to differentiate into tendon tissue was investigated in vitro and in vivo. Encapsulated dental-derived MSCs were transplanted subcutaneously into immunocompromised mice. Our results revealed that after 4 weeks of differentiation in vitro, PDLSCs and GMSCs as well as the positive control human bone marrow mesenchymal stem cells (hBMMSCs) exhibited high levels of mRNA expression for gene markers related to tendon regeneration (Scx, DCn, Tnmd, and Bgy) via qPCR measurement. In a corresponding in vivo animal model, ectopic neo-tendon regeneration was observed in subcutaneous transplanted MSC-alginate constructs, as confirmed by histological and immunohistochemical staining for protein markers specific for tendons. Interestingly, in our quantitative PCR and in vivo histomorphometric analyses, PDLSCs showed significantly greater capacity for tendon regeneration than GMSCs or hBMMSCs (P < 0.05). Altogether, these findings indicate that periodontal ligament and gingival tissues can be considered as suitable stem cell sources for tendon engineering. PDLSCs and GMSCs encapsulated in TGF-?3-loaded RGD-modified alginate microspheres are promising candidates for tendon regeneration.

Project description:Periodontitis is a common chronic inflammatory oral disease. The objective of periodontal treatment is to control infection whilst regenerating damaged periodontal tissue. The present study aimed to determine the potential effects of pterostilbene (PTE), a representative stilbene compound, on the proliferation and differentiation of human periodontal ligament stem cells (hPDLSCs). Different concentrations (1, 5, 10 and 20 µM) of PTE were applied to hPDLSCs, after which Cell Counting Kit-8 and western blotting assays were performed to examine the protein levels of Ki67, PCNA, p-IκBα, IκBα, Bcl-2, Bax, cleaved caspase3. The effect of PTE on the release of inflammatory factors, including IL-1β, IL-6 and IL-10 was assessed by RT-qPCR. The apoptosis of TNF-α-induced hPDLSCs was evaluated by TUNEL assay and western blotting. Additionally, the role of PTE in hPDLSC mineralization was evaluated using alizarin red staining. The expression levels of mineralization indices, including RUNX2 and ALP were subsequently determined using western blotting. Subsequently, the target of PTE was predicted using TargetNet database and AutoDock v4.2 software and verified using western blotting. The results of the present study revealed that PTE promoted the proliferation of hPDLSCs in a concentration-dependent manner. Furthermore, PTE treatment decreased the release of inflammatory factors and alleviated the apoptosis of TNF-α-induced hPDLSCs. PTE was also demonstrated to promote the formation of mineral nodules in TNF-α-induced hPDLSCs. The Targetnet database, along with molecular docking, indicated that histone deacetylases (HDACs) were the probable targets of PTE upstream of regulating periodontitis. The results of western blotting implied that TNF-α significantly increased expression levels of HDAC2, 4, 6 and 8, whilst PTE treatment markedly decreased HDAC4, 6 and 8 expression in a concentration-dependent manner compared with the TNF-α group, which further confirmed these conclusions. In summary, results of the present study revealed that PTE promoted TNF-α-induced hPDLSC proliferation and differentiation, whilst alleviating inflammation and apoptosis. PTE also inhibited the expression of HDACs, which may be involved in the mechanism of periodontitis.

Dataset Information

Preclinical Assessment of the Proliferation Capacity of Gingival and Periodontal Ligament Stem Cells from Diabetic Patients.

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Preclinical Assessment of the Proliferation Capacity of Gingival and Periodontal Ligament Stem Cells from Diabetic Patients.

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