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https://www.readbyqxmd.com/read/29159326/overexpression-of-id1-reverses-the-repression-of-human-dental-pulp-stem-cells-differentiation-induced-by-twist1-silencing
#1
Izabela Maciejewska, Monika Sakowicz-Burkiewicz, Marta Krzeminska, Tadeusz Pawelczyk
Multiple studies showed that the cessation of TWIST1 expression is the prerequisite for osteoblasts' maturation. However, recent reports revealed that the function of TWIST1 is different in the dental pulp stem cells (DPSCs), where a high level of TWIST1 expression promoted DPSCs' differentiation. The aim of the study was to investigate the impact of TWIST1 and ID1 on the differentiation process in the human DPSCs. METHODS: TWIST1 and ID1 expression in the DSPCs was modulated by lentivirus transduction...
November 20, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/29150644/therapeutic-effects-of-hepatocyte-growth-factor-overexpressing-dental-pulp-stem-cells-on-liver-cirrhosis-in-a-rat-model
#2
Xiao-Fang Cao, Shi-Zhu Jin, Liang Sun, Yuan-Bo Zhan, Feng Lin, Ying Li, Ying-Lian Zhou, Xiu-Mei Wang, Li Gao, Bin Zhang
Cirrhosis is the terminal stage of hepatic diseases and is prone to develop into hepatocyte carcinoma. Increasing evidence suggests that the transplantation of dental pulp stem cells (DPSCs) may promote recovery from cirrhosis, but the key regulatory mechanisms involved remain to be determined. In this study, we overexpressed human hepatocyte growth factor (hHGF) in primary rat DPSCs and evaluated the effects of HGF overexpression on the biological behaviors and therapeutic efficacy of grafted DPSCs in cirrhosis...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29149082/the-biological-properties-of-ogi-surfaces-positively-act-on-osteogenic-and-angiogenic-commitment-of-mesenchymal-stem-cells
#3
Paolo Ghensi, Eriberto Bressan, Chiara Gardin, Letizia Ferroni, Maria Costanza Soldini, Federico Mandelli, Claudio Soldini, Barbara Zavan
Osteogenesis process displays a fundamental role during dental implant osteointegration. In the present work, we studied the influence of Osteon Growth Induction (OGI) surface properties on the angiogenic and osteogenic behaviors of Mesenchymal Stem cells (MSC). MSC derived from dental pulp and HUVEC (Human Umbilical Vein Endothelial Cells) were grown in on OGI titanium surfaces, and cell proliferation and DNA synthesis were evaluated by MTT [3-(4,5-dimethylthiazol-2yl)-2,5-diphenyltetrazolium bromide] test and DNA quantification...
November 17, 2017: Materials
https://www.readbyqxmd.com/read/29143185/osteogenic-prospective-of-deriving-human-dental-stem-cells-in-collagen-matrix-boost
#4
Tong-Jing Fang, Ding-Han Wang, Chia-Yu Wang, Raju Poongodi, Nien-Hsien Liou, Jiang-Chuan Liu, Ming-Lun Hsu, Po-Da Hong, Shih-Fang Yang, Meng-Lun Liu
Stem cells derived from oral tissue represent a highly attractive alternative source for clinical bone regeneration because they can be collected by non-invasive or minimally invasive procedures. Herein, we describe the human dental stem cells (DSCs) deriving from buccal fat pads (BFP), dental pulp (DP) of impacted teeth, and periodontal ligaments (PDL) to obtain BFPSCs, DPSCs, and PDLSCs, respectively. Cells were purified with selected medium and expanded through passages in stem cell culture medium. Purified cells were characterized for stemness by their growth rate, immunostaining, and multilineage differentiation ability...
November 15, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29139614/human-dental-stem-cell-derived-transgene-free-ipscs-generate-functional-neurons-via-embryoid-body-mediated-and-direct-induction-methods
#5
Ikbale El Ayachi, Jun Zhang, Xiao-Ying Zou, Zongdong Yu, Wei Wei, Kristen M S O'Connell, George T-J Huang
Induced pluripotent stem cells (iPSCs) give rise to neural stem/progenitor cells (NSCs), serving as a good source for neural regeneration. Here, we established transgene-free (TF) iPSCs from dental stem cells (DSCs) and determined their capacity to differentiate into functional neurons in vitro. Generated TF iPSCs from stem cells of apical papilla (SCAP) and dental pulp stem cells (DPSCs) underwent two methods -- embryoid body (EB)-mediated and direct induction, to guide TF-DSC iPSCs along with H9 or H9 Syn-GFP (human embryonic stem cells) into functional neurons in vitro...
November 15, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29131087/deferoxamine-induced-migration-and-odontoblast-differentiation-via-ros-dependent-autophagy-in-dental-pulp-stem-cells
#6
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/29130547/mir-140-5p-mediated-regulation-of-the-proliferation-and-differentiation-of-human-dental-pulp-stem-cells-occurs-through-the-lipopolysaccharide-toll-like-receptor-4-signaling-pathway
#7
De-Gang Sun, Bing-Chang Xin, Di Wu, Lei Zhou, Hong-Bin Wu, Wen Gong, Jian Lv
Human dental pulp stem cells (DPSCs) are oral mesenchymal stem cells with potential to differentiate into various cell types. Recent studies of DPSCs have focused on microRNAs (miRNAs), a class of small noncoding RNAs that play crucial roles in regulating DPSC phenotypes. In the current study, the expression of miR-140-5p was significantly decreased during lipopolysaccharide (LPS)-mediated differentiation of DPSCs in vitro. Overexpression of miR-140-5p enhanced proliferation of DPSCs and inhibited DPSC differentiation, whereas suppression of miR-140-5p produced the opposite effect...
December 2017: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29121452/3d-maskless-micropatterning-for-regeneration-of-highly-organized-tubular-tissues
#8
Chi Ma, Tiejun Qu, Bei Chang, Yan Jing, Jerry Q Feng, Xiaohua Liu
Micropatterning is a widely used powerful tool to create highly ordered microstructures on material surfaces. However, due to technical limitations, the integration of micropatterned microstructures into bioinspired 3D scaffolds to successfully regenerate well-organized functional tissues is not achieved. In this work, a unique maskless micropatterning technology is reported to create 3D nanofibrous matrices with highly organized tubular architecture for tissue regeneration. This micropatterning method is a laser-guided, noncontact, high-precision, flexible computer programming of machining process that can create highly ordered tubules with the density ranged from 1000 to 60 000 mm(-2) and the size varied from 300 nm to 30 µm in the bioinspired 3D matrix...
November 9, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29118330/molecular-spectrum-of-secretome-regulates-the-relative-hepatogenic-potential-of-mesenchymal-stem-cells-from-bone-marrow-and-dental-tissue
#9
Ajay Kumar, Vinod Kumar, Vidya Rattan, Vivekananda Jha, Arnab Pal, Shalmoli Bhattacharyya
Liver regeneration is a spontaneous process that occurs after liver injury, but acute liver failure is a complex and fatal disease which is difficult to treat. Cell-based therapies are promising alternative therapeutic approach for liver failure and different cell sources have been tested in this regard. We investigated the comparative hepatogenic potential of human bone marrow stem cells (BMSC) with stem cells derived from human dental pulp (DPSC), apical papilla (SCAP) and follicle (DFSC) during this study...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29117466/dental-properties-ultrastructure-and-pulp-cells-associated-with-a-novel-dspp-mutation
#10
Thantrira Porntaveetus, Thanaphum Osathanon, Nunthawan Nowwarote, Prasit Pavasant, Chalurmpon Srichomthong, Kanya Suphapeetiporn, Vorasuk Shotelersuk
OBJECTIVE: To investigate physical characteristics and behaviours of dental pulp cells of teeth isolated from a dentinogenesis imperfecta (DGI) patient with a novel DSPP mutation. SUBJECTS AND METHODS: Whole exome and Sanger sequencing were employed to identify mutations. Physical characteristics of the teeth were examined. Pulp cells' behaviors including cell proliferation, colony forming unit, osteogenic differentiation, pluripotent markers, and mesenchymal stem cell markers were investigated...
November 8, 2017: Oral Diseases
https://www.readbyqxmd.com/read/29104466/the-crosstalk-between-hdpscs-and-hucmscs-on-proliferation-and-osteogenic-genes-expression-in-coculture-system
#11
Linglu Jia, Weiting Gu, Yunpeng Zhang, Yawen Ji, Jin Liang, Yong Wen, Xin Xu
Objectives: The present study established a non-contact coculture system in vitro, aiming to investigate the crosstalk between human dental pulp stem cells (hDPSCs) and human umbilical cord mesenchymal stem cells (hUCMSCs) on proliferation activity and osteogenic genes expression through paracrine. Materials and methods: The stemness of hDPSCs and hUCMSCs were identified by flow cytometric analysis and multipotential differentiation assays. With the help of transwell inserts, the non-contact coculture system in vitro was established between hDPSCs and hUCMSCs...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29096714/isolation-and-prolonged-expansion-of-oral-mesenchymal-stem-cells-under-clinical-grade-gmp-compliant-conditions-differentially-affects-stemness-properties
#12
Athina Bakopoulou, Danae Apatzidou, Eleni Aggelidou, Evangelia Gousopoulou, Gabriele Leyhausen, Joachim Volk, Aristeidis Kritis, Petros Koidis, Werner Geurtsen
BACKGROUND: Development of clinical-grade cell preparations is central to meeting the regulatory requirements for cellular therapies under good manufacturing practice-compliant (cGMP) conditions. Since addition of animal serum in culture media may compromise safe and efficient expansion of mesenchymal stem cells (MSCs) for clinical use, this study aimed to investigate the potential of two serum/xeno-free, cGMP culture systems to maintain long-term "stemness" of oral MSCs (dental pulp stem cells (DPSCs) and alveolar bone marrow MSCs (aBMMSCs)), compared to conventional serum-based expansion...
November 2, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29092089/notch-wnt-cross-signalling-regulates-stemness-of-dental-pulp-stem-cells-through-expression-of-neural-crest-and-core-pluripotency-factors
#13
V Uribe-Etxebarria, J Luzuriaga, P García-Gallastegui, A Agliano, F Unda, G Ibarretxe
Dental pulp stem cells (DPSCs) from adult teeth express neural crest (NC) markers together with core transcriptional factors associated with stem cell pluripotency, such as Oct4a, Sox2, c-Myc, Rex1, Stella/Dppa3, Ssea1/Fut4, Lin28 and Nanog. The possibility to boost the natural stemness features of DPSCs by mild methods, that do not involve gene and/or chromatin modification or gene transfection, is highly desirable for cell therapy. Canonical Wnt and Notch are two highly conserved developmental signalling pathways that are involved in NC emergence and stem cell self-renewal...
November 1, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/29080346/vegf-bmp-2-loaded-three-dimensional-model-for-enhanced-angiogenic-and-odontogenic-potential-of-dental-pulp-stem-cells
#14
H Aksel, Ş Öztürk, A Serper, K Ulubayram
AIM: To investigate the proliferation and differentiation potential of human dental pulp stem cells (DPSCs) in a three-dimensional culture model (TDM) by incorporation of VEGF and BMP-2. METHODOLOGY: TDM was established using fibrin gel (fg) as a soft tissue matrix and demineralized dentine disc (dd) as a hard tissue matrix. DPSCs and vascular endothelial growth factor (VEGF) were encapsulated in fibrin gel (fg-VEGF) and then inserted into bone morphogenetic protein (BMP-2) coated demineralized dentine discs (dd-BMP-2)...
October 28, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/29079052/biocompatibility-of-new-pulp-capping-materials-neomta-plus-mta-repair-hp-and-biodentine-on-human-dental-pulp-stem-cells
#15
Christopher J Tomás-Catalá, Mar Collado-González, David García-Bernal, Ricardo E Oñate-Sánchez, Leopoldo Forner, Carmen Llena, Adrián Lozano, José M Moraleda, Francisco J Rodríguez-Lozano
INTRODUCTION: The aim of the present study was to evaluate the in vitro cytotoxicity of MTA Repair HP, NeoMTA Plus, and Biodentine, new bioactive materials used for dental pulp capping, on human dental pulp stem cells (hDPSCs). METHODS: Biological testing was carried out in vitro on hDPSCs. Cell viability and cell migration assays were performed using eluates of each capping material. To evaluate cell morphology and cell attachment to the different materials, hDPSCs were directly seeded onto the material surfaces and analyzed by scanning electron microscopy...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079051/minced-pulp-as-source-of-pulpal-mesenchymal-stem-cells-with-odontogenic-differentiation-capacity
#16
Zhnagrui Liang, Satoshi Kawano, Wei Chen, Moein S Sadrkhani, Chaehwan Lee, Euiseong Kim, Alireza Moshaverinia, Reuben H Kim, Mo Kang
INTRODUCTION: Pulp tissue regeneration is becoming a reality after discovery of mesenchymal stem cells (MSCs) residing in the pulp tissues through various clinical innovations, although MSC transplantation into the pulp space has met with challenges of in vitro cell expansion and cultures. As a way to circumvent the regulatory and technical complexities of in vitro MSC culture, we investigated the use of minced pulp tissues as a source of pulpal MSCs for tissue regeneration. METHODS: We characterized the phenotype of cells explanted from minced pulp (MP), namely MP-derived MSCs (MP-MSCs), compared with dental pulp stem cells (DPSCs) established from pulp tissues by enzyme digestion...
October 24, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29079048/cytokine-expression-of-stem-cells-originating-from-the-apical-complex-and-coronal-pulp-of-immature-teeth
#17
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/29069149/effects-of-syzygium-aromaticum-cinnamomum-zeylanicum-and-salvia-triloba-extracts-on-proliferation-and-differentiation-of-dental-pulp-stem-cells
#18
Ayşegül Mendi, Beyza Gökçınar Yağci, Mustafa Kiziloğlu, Nurdan Saraç, Derviş Yilmaz, Aysel Uğur, Duygu Uçkan
INTRODUCTION: Hypersensitivity, local irritative and cytotoxic effects are known for the chemical components of Syzygium aromaticum and Cinnamomum zeylanicum contained in dental materials. However, there is no intimate data in dentistry using the whole extracts of these plants and introducing new ones. Salvia triloba is a well-known anti-inflammatory plant that correspondingly could be used in several dental traumas. OBJECTIVES: We aimed to show and compare the effect of S...
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
#19
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/29061356/clindamycin-modified-triple-antibiotic-nanofibers-a-stain-free-antimicrobial-intracanal-drug-delivery-system
#20
Ashley Karczewski, Sabrina A Feitosa, Ethan I Hamer, Divya Pankajakshan, Richard L Gregory, Kenneth J Spolnik, Marco C Bottino
INTRODUCTION: A biocompatible strategy to promote bacterial eradication within the root canal system after pulpal necrosis of immature permanent teeth is critical to the success of regenerative endodontic procedures. This study sought to synthesize clindamycin-modified triple antibiotic (metronidazole, ciprofloxacin, and clindamycin [CLIN]) polymer (polydioxanone [PDS]) nanofibers and determine in vitro their antimicrobial properties, cell compatibility, and dentin discoloration. METHODS: CLIN-only and triple antibiotic CLIN-modified (CLIN-m, minocycline-free) nanofibers were processed via electrospinning...
October 20, 2017: Journal of Endodontics
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