title: Isolation and in vitro characterisation of dental pulp stem cells from natal teeth.
abstract: Dental pulp stem cells were primarily derived from the pulp tissues of exfoliated deciduous teeth, primary incisors and permanent third molar teeth. The aim of this study was to isolate and extensively characterise SCs derived from human natal dental pulp (hNDP). For characterisation, proliferation capacity, phenotypic properties, ultrastructural and differentiation characteristics and gene expression profiles were utilised. A comparison was done between the properties of NDP-SCs and the properties of mesenchymal stem cells (MSCs) from bone marrow (BM) of the human. Stem cells isolated from hNDP and hBM were analysed by flow cytometry, reverse transcriptase-PCR, Real Time-PCR, and immunocytochemistry. Both cell lines were directionally differentiated towards adipogenic, osteogenic chondrogenic, myogenic and neurogenic lineages. hNDP-SCs and hBM-MSCs expressed CD13, CD44, CD90, CD146 and CD166, but not CD3, CD8, CD11b, CD14, CD15, CD19, CD33, CD34, CD45, CD117, and HLA-DR. Ultrastructural characteristics of hNDP-SCs showed more developed and metabolically active cells. hNDP-SCs and hBM-MSCs expressed some adipogenic (leptin, adipophilin and PPARgamma), myogenic (desmin, myogenin, myosinIIa, and alpha-SMA), neurogenic (gamma-enolase, MAP2a,b, c-fos, nestin, NF-H, NF-L, GFAP and betaIII tubulin), osteogenic (osteonectin, osteocalcin, osteopontin, Runx-2, and type I collagen) and chondrogenic (type II collagen, SOX9) markers without any stimulation towards differentiation under basal conditions. Embryonic stem cell markers Oct4, Rex-1, FoxD-3, Sox2, and Nanog were also identified. The differentiation potential of hNDP-SCs and hBM-MSCs to adipogenic, osteogenic, chondrogenic, myogenic and neurogenic was shown. This report described the first successful isolation and characterisation of hNDP-SCs.
authors.affiliation: Stem Cell and Gene Therapy Research and Applied Center, Kocaeli University, Kocaeli, Turkey. ekaraoz@hotmail.com
authors.forename: Erdal
authors.initials: E
authors.lastname: Karaöz
authors.forename: Burcu Nur
authors.initials: BN
authors.lastname: Doğan
authors.forename: Ayça
authors.initials: A
authors.lastname: Aksoy
authors.forename: Gülçin
authors.initials: G
authors.lastname: Gacar
authors.forename: Serap
authors.initials: S
authors.lastname: Akyüz
authors.forename: Selda
authors.initials: S
authors.lastname: Ayhan
authors.forename: Zehra Seda
authors.initials: ZS
authors.lastname: Genç
authors.forename: Sinan
authors.initials: S
authors.lastname: Yürüker
authors.forename: Gökhan
authors.initials: G
authors.lastname: Duruksu
authors.forename: Pinar Cetinalp
authors.initials: PC
authors.lastname: Demircan
authors.forename: Ayla Eker
authors.initials: AE
authors.lastname: Sariboyaci
mesh_terms: D002454:Cell Differentiation; D049109:Cell Proliferation; D002470:Cell Survival; D002478:Cells, Cultured; D003782:Dental Pulp / Q000166:cytology* / Q000648:ultrastructure; D005434:Flow Cytometry; D006801:Humans; D007150:Immunohistochemistry; D008854:Microscopy, Electron; D009306:Natal Teeth / Q000166:cytology* / Q000648:ultrastructure; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013234:Stem Cells / Q000166:cytology* / Q000648:ultrastructure