Comparison of osteo/odontogenic differentiation of human adult dental pulp stem cells and stem cells from apical papilla in the presence of platelet lysate

Abuarqoub, Duaa; Awidi, Abdalla; Abuharfeil, Nizar Mohammad

doi:10.1016/j.archoralbio.2015.07.007

Cited by 39 publications

(46 citation statements)

References 43 publications

(57 reference statements)

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“…Additional experiments were performed to determine if immortalized DPSC could differentiate into both osteocytes and adipocytes as previously reported [18, 19]. In a supplemental publication we demonstrate that DPSC can efficiently differentiate into osteocytes, but that osteogenesis is ~60% less efficient using immortalized DPSC [20].…”

Section: Resultsmentioning

confidence: 98%

Characterization of neurons from immortalized dental pulp stem cells for the study of neurogenetic disorders

et al. 2015

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A major challenge to the study and treatment of neurogenetic syndromes is accessing live neurons for study from affected individuals. Although several sources of stem cells are currently available, acquiring these involve invasive procedures, may be difficult or expensive to generate and are limited in number. Dental pulp stem cells (DPSC) are multipotent stem cells that reside deep the pulp of shed teeth. To investigate the characteristics of DPSC that make them a valuable resource for translational research, we performed a set of viability, senescence, immortalization and gene expression studies on control DPSC and derived neurons. We investigated the basic transport conditions and maximum passage number for primary DPSC. We immortalized control DPSC using human telomerase reverse transcriptase (hTERT) and evaluated neuronal differentiation potential and global gene expression changes by RNA-seq. We show that neurons from immortalized DPSC share morphological and electrophysiological properties with non-immortalized DPSC. We also show that differentiation of DPSC into neurons significantly alters gene expression for 1305 transcripts. Here we show that these changes in gene expression are concurrent with changes in protein levels of the transcriptional repressor REST/NSRF, which is known to be involved in neuronal differentiation. Immortalization significantly altered the expression of 183 genes after neuronal differentiation, 94 of which also changed during differentiation. Our studies indicate that viable DPSC can be obtained from teeth stored for ≥72hrs, these can then be immortalized and still produce functional neurons for in vitro studies, but that constitutive hTERT immortalization is not be the best approach for long term use of patient derived DPSC for the study of disease.

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Section: Resultsmentioning

confidence: 98%

Characterization of neurons from immortalized dental pulp stem cells for the study of neurogenetic disorders

et al. 2015

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“…Contrary, the nutritional media used in previous studies was α -MEM (21, 22). This type of media should be supplemented with serum to be suitable for a wide range of mammalian cells.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of Human Platelet Rich Fibrin Exudate vs Fetal Bovine Serum on Proliferation and Differentiation of Dental Pulp Stem Cells

Saeed

Elrahman

Helal

et al. 2017

IJSC

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Background and ObjectivesThe imperative role of dental pulp stem cells (DPSCs) in regenerative therapy demands an in-vitro expansion which must deal with the safety and ethical problems associated with fetal bovine serum (FBS). The primary aim of this study was to compare the effects of human platelet rich fibrin (hPRF) exudate Vs FBS on proliferation and osteodifferentiation of human dental pulp stem cells (hDPSCs). The secondary one was to determine the optimum concentration of hPRF exudate inducing hDPSCs proliferation and osteodifferentiation.MethodsThe direct method was used to prepare hPRF exudate. hDPSCs were isolated from impacted mandibular third molars of twelve donors by the outgrowth method. For cell viability and proliferation rate testing, 96 well plates were used and the assay was done in duplicate and the trial repeated four times under the same conditions. Six wells were used to contain 10% FBS, serum free media, 1%, 5%, 10% and 20% concentrations of hPRF exudates, respectively. The proliferation assay was carried out by MTS tetrazolium cell proliferation assay kit and Elisa reader. The study design for osteodifferentiation protocol was exactly as the proliferation one and instead the assay was carried out by alizarin red with Elisa reader.ResultsCompared to 10% FBS, 10% hPRF exudate was the optimum concentration for hDPSCs proliferation, while 1% hPRF exudate was the optimum concentration for osteodifferentiation of hDPSCs.ConclusionsAvoiding the risk of zoonosis which may be occurred with FBS, it is recommended to use 10% hPRF exudate for proliferation and 1% for osteodifferentiation.

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“…Also CFU-potential, the immunophenotype, and trilineage differentiation according to MSC requisites were comparable [ 10 ]. 5% PL was defined as the concentration for increased cellular proliferation and for good mineralisation in vitro for DPSCs [ 10 – 12 ]. In addition, the same concentration was used to seed DPSCs on biomaterials, showing positive effects on regeneration in vivo [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Highly EfficientIn VitroReparative Behaviour of Dental Pulp Stem Cells Cultured with Standardised Platelet Lysate Supplementation

Marrazzo

Paduano

Palmieri

et al. 2016

Stem Cells International

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Dental pulp is an accessible source of multipotent mesenchymal stromal cells (MSCs). The perspective role of dental pulp stem cells (DPSCs) in regenerative medicine demands an in vitro expansion and in vivo delivery which must deal with the safety issues about animal serum, usually required in cell culture practice. Human platelet lysate (PL) contains autologous growth factors and has been considered as valuable alternative to fetal bovine serum (FBS) in cell cultures. The optimum concentration to be added of such supplement is highly dependent on its preparation whose variability limits comparability of results. By in vitro experiments, we aimed to evaluate a standardised formulation of pooled PL. A low selected concentration of PL (1%) was able to support the growth and maintain the viability of the DPSCs. The use of PL in cell cultures did not impair cell surface signature typically expressed by MSCs and even upregulated the transcription of Sox2. Interestingly, DPSCs cultured in presence of PL exhibited a higher healing rate after injury and are less susceptible to toxicity mediated by exogenous H2O2 than those cultured with FBS. Moreover, PL addition was shown as a suitable option for protocols promoting osteogenic and chondrogenic differentiation of DPSCs. Taken together, our results indicated that PL is a valid substitute of FBS to culture and differentiate DPSCs for clinical-grade use.

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Comparison of osteo/odontogenic differentiation of human adult dental pulp stem cells and stem cells from apical papilla in the presence of platelet lysate

Cited by 39 publications

References 43 publications

Characterization of neurons from immortalized dental pulp stem cells for the study of neurogenetic disorders

Characterization of neurons from immortalized dental pulp stem cells for the study of neurogenetic disorders

Efficacy of Human Platelet Rich Fibrin Exudate vs Fetal Bovine Serum on Proliferation and Differentiation of Dental Pulp Stem Cells

Highly EfficientIn VitroReparative Behaviour of Dental Pulp Stem Cells Cultured with Standardised Platelet Lysate Supplementation

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