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https://www.readbyqxmd.com/read/29148101/homeobox-protein-msx-1-inhibits-expression-of-bone-morphogenetic-protein-2-bone-morphogenetic-protein-4-and-lymphoid-enhancer-binding-factor-1-via-wnt-%C3%AE-catenin-signaling-to-prevent-differentiation-of-dental-mesenchymal-cells-during-the-late-bell-stage
#1
Xiao-Yu Feng, Xiao-Shan Wu, Jin-Song Wang, Chun-Mei Zhang, Song-Lin Wang
Homeobox protein MSX-1 (hereafter referred to as MSX-1) is essential for early tooth-germ development. Tooth-germ development is arrested at bud stage in Msx1 knockout mice, which prompted us to study the functions of MSX-1 beyond this stage. Here, we investigated the roles of MSX-1 during late bell stage. Mesenchymal cells of the mandibular first molar were isolated from mice at embryonic day (E)17.5 and cultured in vitro. We determined the expression levels of β-catenin, bone morphogenetic protein 2 (Bmp2), Bmp4, and lymphoid enhancer-binding factor 1 (Lef1) after knockdown or overexpression of Msx1...
November 17, 2017: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29138868/hdac-inhibitor-lmk%C3%A2-235-promotes-the-odontoblast-differentiation-of-dental-pulp-cells
#2
Zhao Liu, Ting Chen, Qianqian Han, Ming Chen, Jie You, Fuchun Fang, Ling Peng, Buling Wu
The role of dental pulp cells (DPCs) in hard dental tissue regeneration had received increasing attention because DPCs can differentiate into odontoblasts and other tissue‑specific cells. In recent years, epigenetic modifications had been identified to serve an important role in cell differentiation, and histone deacetylase (HDAC) inhibitors have been widely studied by many researchers. However, the effects of HDAC4 and HDAC5 on the differentiation of DPCs and the precise molecular mechanisms remain unclear...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29138798/hey1-functions-as-a-positive-regulator-of-odontogenic-differentiation-in-odontoblast%C3%A2-lineage-cells
#3
Xiao Yin, Zhaobin Zeng, Jinliang Xing, Ansheng Zhang, Wenkai Jiang, Wei Wang, Hantang Sun, Longxing Ni
Substantial evidence has indicated that Notch and bone morphogenetic protein (BMP) signaling may regulate odontoblastic differentiation. Hairy/enhancer‑of‑split related with YRPW motif 1 (Hey1), a downstream target gene of Notch and BMP signaling, is expressed in dental pulp tissues and has been demonstrated to be responsible for osteoblast mineralization. The aim of this study was to investigate the effects of Hey1 on odontoblast differentiation. The results of the study demonstrated that Hey1 expression in odontoblast‑lineage cells (OLCs) was upregulated by stimulation of osteoblastic/odontoblastic differentiation medium containing ascorbic acid, β‑glycerol phosphate and dexamethasone...
November 13, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29131087/deferoxamine-induced-migration-and-odontoblast-differentiation-via-ros-dependent-autophagy-in-dental-pulp-stem-cells
#4
Xuan Wang, Tian Tian Wu, Long Jiang, Du Rong, Ya Qin Zhu
BACKGROUND/AIMS: As a vital degradation and recycling system, autophagy plays an essential role in regulating the differentiation of stem cells. We previously showed that iron chelator deferoxamine (DFO) could promote the repair ability of dental pulp stem cells (DPSCs). Here, we investigated the effect of DFO in autophagy and the role of autophagy in regulating the migration and odontoblast differentiation of DPSCs. METHODS: Transmission electron microscopy, immunofluorescence staining and western blotting were performed to evaluate the autophagic activity of DPSCs...
November 1, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29127007/mir-3065-5p-regulates-mouse-odontoblastic-differentiation-partially-through-bone-morphogenetic-protein-receptor-type-ii
#5
Chujiao Li, Qian Zhang, Shuaitong Yu, Yuxiu Lin, Shuchen Li, Huan Liu, Zhi Chen
Illumination of the molecular mechanisms regulating odontoblastic differentiation of dental papilla cells is of great significance for proper dentinogenesis and dental pulp regeneration. In this study, we discovered that microRNA (miR)-3065-5p is up-regulated during odontoblastic differentiation. Overexpression of miR-3065-5p promoted odontoblastic differentiation in vitro. Dual luciferase report assay verified that miR-3065-5p could bind to the 3'UTR of bone morphogenetic protein receptor type II (BMPR2), which dramatically increased in the beginning of odontoblastic differentiation but decreased in the terminal differentiation stage...
November 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29124786/schwann-cell-precursors-in-health-and-disease
#6
REVIEW
Jorge B Aquino, Romina Sierra
Schwann cell precursors (SCPs) are frequently regarded as neural crest-derived cells (NCDCs) found in contact with axons during nerve formation. Nevertheless, cells with SCPs properties can be found up to the adulthood. They are well characterized with regard to both gene expression profile and cellular behavior -for instance, proliferation, migratory capabilities and survival requirements-. They differ in origin regarding their anatomic location: even though most of them are derived from migratory NCCs, there is also contribution of the boundary cap neural crest cells (bNCCs) to the skin and other tissues...
November 10, 2017: Glia
https://www.readbyqxmd.com/read/29079395/effect-of-low-intensity-pulsed-ultrasound-on-the-expression-of-calcium-ion-transport-related-proteins-during-tertiary-dentin-formation
#7
Jing Zuo, Jiaxiu Zhen, Fei Wang, Yueheng Li, Zhi Zhou
Low-intensity pulsed ultrasound (LIPUS) is known for its positive effect on bone healing and reparative regeneration. This study investigated whether LIPUS affects reparative progression of the tooth and the expression of calcium ion transport-related proteins in odontoblasts and dental pulp cells using a rat dentin-pulp complex injury model. Forty male adult Sprague-Dawley rats underwent cavity preparation in the right maxillary first molar: 20 received LIPUS irradiation on the cavity-prepared tooth; 20 received LIPUS irradiation on the left maxillary first molar...
October 24, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29079048/cytokine-expression-of-stem-cells-originating-from-the-apical-complex-and-coronal-pulp-of-immature-teeth
#8
Ki Hoon Joo, Je Seon Song, Seunghye Kim, Hyo-Seol Lee, Mijeong Jeon, Seong-Oh Kim, Jae-Ho Lee
INTRODUCTION: The aim of this study was to measure and compare the expression levels of cytokines from developing apical complex cells (DACCs) and dental pulp stem cells (DPSCs) of the immature tooth. METHODS: DPSC-conditioned medium (CM) and DACCs-CM were obtained from human young teeth, and 174 cytokines secreted from each CM were identified and compared. A cytokine membrane array and enzyme-linked immunosorbent assay were used to measure and compare the expression levels of the cytokines...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29073561/evidence-for-programmed-odontoblast-process-retraction-after-dentine-exposure-in-the-rat-incisor
#9
A Mahdee, J Eastham, J M Whitworth, J I Gillespie
OBJECTIVE: To re-examine the morphology and potential functions of odontoblasts in intact rat incisors and after cavity preparation into dentine. DESIGN: Intact incisors were fixed, decalcified, snap frozen and sectioned (10μm), before staining with rhodamine phalloidin or antibodies for cyto-skeletal proteins: vimentin and actin, ion transporter: NaK-ATPase, and dendritic cell marker: OX6. Samples with cavity were processed similarly and stained for actin and vimentin before comparing the lengths of odontoblast processes (OP) at baseline, 3h and 24h (n=5 for each group)...
October 10, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29069152/in-vitro-and-in-vivo-evaluations-of-glass-ionomer-cement-containing-chlorhexidine-for-atraumatic-restorative-treatment
#10
Cristiane Duque, Kelly Limi Aida, Jesse Augusto Pereira, Gláucia Schuindt Teixeira, Angela Scarparo Caldo-Teixeira, Luciana Rodrigues Perrone, Karina Sampaio Caiaffa, Thais de Cássia Negrini, Aline Rogéria Freire de Castilho, Carlos Alberto de Souza Costa
OBJECTIVES: Addition of chlorhexidine has enhanced the antimicrobial effect of glass ionomer cement (GIC) indicated to Atraumatic Restorative Treatment (ART); however, the impact of this mixture on the properties of these materials and on the longevity of restorations must be investigated. The aim of this study was to evaluate the effects of incorporating chlorhexidine (CHX) in the in vitro biological and chemical-mechanical properties of GIC and in vivo clinical/ microbiological follow-up of the ART with GIC containing or not CHX...
September 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29064632/the-effects-of-platelet-derived-growth-factor-bb-on-human-dental-pulp-stem-cells-mediated-dentin-pulp-complex-regeneration
#11
Maolin Zhang, Fei Jiang, Xiaochen Zhang, Shaoyi Wang, Yuqin Jin, Wenjie Zhang, Xinquan Jiang
Dentin-pulp complex regeneration is a promising alternative treatment for the irreversible pulpitis caused by tooth trauma or dental caries. This process mainly relies on the recruitment of endogenous or the transplanted dental pulp stem cells (DPSCs) to guide dentin-pulp tissue formation. Platelet-derived growth factor (PDGF), a well-known potent mitogenic, angiogenic, and chemoattractive agent, has been widely used in tissue regeneration. However, the mechanisms underlying the therapeutic effects of PDGF on dentin-pulp complex regeneration are still unclear...
October 24, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29062364/alcohol-inhibits-odontogenic-differentiation-of-human-dental-pulp-cells-by-activating-mtor-signaling
#12
Wei Qin, Qi-Ting Huang, Michael D Weir, Zhi Song, Ashraf F Fouad, Zheng-Mei Lin, Liang Zhao, Hockin H K Xu
Long-term heavy alcohol consumption could result in a range of health, social, and behavioral problems. People who abuse alcohol are at high risks of seriously having osteopenia, periodontal disease, and compromised oral health. However, the role of ethanol (EtOH) in the biological functions of human dental pulp cells (DPCs) is unknown. Whether EtOH affects the odontoblastic differentiation of DPCs through the mechanistic target of rapamycin (mTOR) remains unexplored. The objective of this study was to investigate the effects of EtOH on DPC differentiation and mineralization...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29042940/expression-and-localization-of-special-at-rich-sequence-binding-protein-2-in-murine-molar-development-and-the-pulp-dentin-complex-of-human-healthy-teeth-and-teeth-with-pulpitis
#13
Lina He, Huimei Liu, Lei Shi, Shuang Pan, Xu Yang, Lin Zhang, Yumei Niu
Special AT-rich sequence binding protein 2 (SATB2) is a member of the special family of AT-rich binding transcription factors and has a critical role in osteoblast differentiation and craniofacial patterning. However, the expression and distribution of SATB2 in tooth development is largely unknown. The aim of the present study was to detect the expression and distribution of SATB2 during murine molar development and, in human healthy teeth and teeth with pulpitis using immunohistochemistry. Molars were obtained from Kunming mice at embryonic day (E) 13...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29039570/effect-of-sox2-on-odontoblast-differentiation-of-dental-pulp-stem-cells
#14
Yali Yang, Yifan Zhao, Xiaobo Liu, Yaoyu Chen, Pengfei Liu, Lei Zhao
The present study aimed to investigate the effect of SOX2 on odontoblast differentiation of dental pulp stem cells (DPSCs), and to examine the potential application of DPSCs on dental restoration. SRY‑box 2 (SOX2) overexpression in human DPSCs (DPSCs‑SOX2) was established by retroviral infection. The empty vector‑infected DPSCs were regarded as a control group (DPSCs‑vector group). Odontoblast differentiation culture medium was used to induce the differentiation of DPSCs. The degree of odontoblast differentiation of DPSCs was analyzed by flow cytometry...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29035686/the-human-odontoblast-cell-layer-and-dental-pulp-proteomes-and-n-terminomes
#15
S R Abbey, U Eckhard, N Solis, G Marino, I Matthew, C M Overall
The proteome and N-terminome of the human odontoblast cell layer were identified for the first time by shotgun proteomic and terminal amine isotopic labeling of substrates (TAILS) N-terminomic analyses, respectively, and compared with that of human dental pulp stroma from 26 third molar teeth. After reverse-phase liquid chromatography-tandem mass spectrometry, >170,000 spectra from the shotgun and TAILS analyses were matched by 4 search engines to 4,888 and 12,063 peptides in the odontoblast cell layer and pulp stroma, respectively...
October 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29033090/the-antimicrobial-peptide-ll-37-as-a-possible-adjunct-for-the-proliferation-and-differentiation-of-dental-pulp-stem-cells
#16
Noala Vicensoto Moreira Milhan, Patricia Pimentel de Barros, Elis Andrade de Lima Zutin, Felipe Eduardo de Oliveira, Carlos Henrique Ribeiro Camargo, Samira Esteves Afonso Camargo
INTRODUCTION: This study evaluated the biocompatibility of 5 and 10 μg/mL LL-37 in vitro and its effect on the differentiation of human dental pulp stem cells (DPSCs) into odontoblast-like cells. METHODS: Cell viability, genotoxicity, nitric oxide production, cell cycle, dentine sialophosphoprotein (DSPP) production, and DSPP gene expression. RESULTS: Concentrations of 5 and 10 μg/mL of LL-37 were not cytotoxic and generally increased cell viability, especially on the third day (P < ...
October 12, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29031686/oestrogen-receptor-%C3%AE-er%C3%AE-regulates-osteogenic-differentiation-of-human-dental-pulp-cells
#17
Aishah Alhodhodi, Hanaa Alkharobi, Matthew Humphries, Hasanain Alkhafaji, Reem El-Gendy, Georg Feichtinger, Valerie Speirs, James Beattie
Estradiol (E2) has many important actions in the tissues of the oral cavity. Disruption of E2 metabolism or alterations in systemic E2 concentrations have been associated with compromised periodontal health. In many instances such changes occur secondarily to the well characterised effects of E2 on bone physiology -especially maintenance of bone mineral density (BMD). Despite these important epidemiological findings, little is known about the mechanism of action of E2 in oral tissues or the expression and function of oestrogen receptor (ER) isoforms in these tissues...
November 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29017759/differential-cytotoxic-effects-on-odontoblastic-cells-induced-by-self-adhesive-resin-cements-as-a-function-of-the-activation-protocol
#18
Paulo Henrique Perlatti D'Alpino, Gioconda Emanuella Diniz de Dantas Moura, Silvana Coelho de Arruda Barbosa, Lygia de Azevedo Marques, Marcos Nogueira Eberlin, Fábio Dupart Nascimento, Ivarne Luis Dos Santos Tersariol
OBJECTIVES: To evaluate the cytotoxic effects of exposing odontoblast cells to a variety of commercial self-adhesive cements polymerized using different activation modes. METHODS: Five cements: MaxCem Elite (MAX), Bifix SE (BSE), G-Cem LinkAce (GCE), Clearfil SA Luting (CAS), and RelyX U200 (U200) were mixed, dispensed into molds, and distributed in groups, according to polymerization protocols: immediate photoactivation; delayed photoactivation (10min self-curing plus light-activation); and chemical activation (no light exposure)...
October 7, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28986711/blockade-of-lgr4-inhibits-proliferation-and-odonto-osteogenic-differentiation-of-stem-cells-from-apical-papillae
#19
Meng Zhou, Shuyu Guo, Lichan Yuan, Yuxin Zhang, Mengnan Zhang, Huimin Chen, Mengting Lu, Jianrong Yang, Junqing Ma
During tooth root development, stem cells from apical papillae (SCAPs) are indispensable, and their abilities of proliferation, migration and odontoblast differentiation are linked to root formation. Leucine-rich repeat-containing GPCR 4 (LGR4) modulates the biological processes of proliferation and differentiation in multiple stem cells. In this study, we showed that LGR4 is expressed in all odontoblast cell lineage cells and Hertwig's epithelial root sheath (HERS) during the mouse root formation in vivo. In vitro we determined that LGR4 is involved in the Wnt/β-catenin signaling pathway regulating proliferation and odonto/osteogenic differentiation of SCAPs...
December 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28972819/schwann-cell-phenotype-changes-in-aging-human-dental-pulp
#20
E Couve, M Lovera, K Suzuki, O Schmachtenberg
Schwann cells are glial cells that support axonal development, maintenance, defense, and regeneration in the peripheral nervous system. There is limited knowledge regarding the organization, plasticity, and aging of Schwann cells within the dental pulp in adult permanent teeth. The present study sought to relate changes in the pattern of Schwann cell phenotypes between young and old adult teeth with neuronal, immune, and vascular components of the dental pulp. Schwann cells are shown to form a prominent glial network at the dentin-pulp interface, consisting of nonmyelinating and myelinating phenotypes, forming a multicellular neuroimmune interface in association with nerve fibers and dendritic cells...
October 1, 2017: Journal of Dental Research
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