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Xiaodan Yu, Hiroko Kawakami, Naoyuki Tahara, Merissa Olmer, Shinichi Hayashi, Ryutaro Akiyama, Anindya Bagchi, Martin Lotz, Yasuhiko Kawakami
Increasing evidence supports the idea that bone morphogenetic proteins (BMPs) regulate cartilage maintenance in the adult skeleton. The aim of this study is to obtain insight into the regulation of BMP activities in the adult skeletal system. We analyzed expression of Noggin and Gremlin1, BMP antagonists that are known to regulate embryonic skeletal development, in the adult skeletal system by Noggin-LacZ and Gremlin1-LacZ knockin reporter mouse lines. Both reporters are expressed in the adult skeleton in a largely overlapping manner with some distinct patterns...
October 21, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Mohammad Samiei, Marziyeh Aghazadeh, Effat Alizadeh, Naser Aslaminabadi, Soodabeh Davaran, Sajjad Shirazi, Farhad Ashrafi, Roya Salehi
Purpose: Statin is an effective factor for promoting osteogenesis. The aim of the present study was to evaluate the effect of simvastatin (SIM) and/or HA addition on changes in osteogenesis levels by human DPSCs transferred onto three-dimensional (3D) nanofibrous Poly (ε-caprolactone) (PCL)/Poly lactic acide (PLLA) polymeric scaffolds. Methods: For this purpose, a 3D nanofibrous composite scaffold of PCL/PLLA/HA was prepared by electrospinning method. SIM was added to scaffolds during DPSCs culturing step...
September 2016: Advanced Pharmaceutical Bulletin
Kai Li, Jiangming Yu, Youtao Xie, Mingyu You, Liping Huang, Xuebin Zheng
Ideal coatings for orthopedic implants should be able to induce excellent osseointegration with host bone tissue, which requires good osteogenic responses and limited inflammatory reactions. Cerium oxide (CeO2) ceramics have anti-oxidative properties and can be used to decrease mediators of inflammation, making them attractive for biomedical application. In this study, two kinds of CeO2 incorporated calcium silicate coatings (CS-10Ce and CS-30Ce) were prepared via plasma spraying technique, and the effects of CeO2 addition on the responses of bone mesenchymal stem cells (BMSCs) and RAW264...
October 20, 2016: Biological Trace Element Research
Y Xiao, Y Y DU, C Gao, W Kong
OBJECTIVE: To study the change of microRNA during the early stage of high phosphorus induced vascular smooth muscle cell (VSMC) calcification and its related mechanism. METHODS: The in vitro calcification model was created through stimulating VSMC cell line A7r5 with high Pi (2.6 mmol/L) for 7 d. The calcification was validated through ocresolphthalein complexone colorimetry to detect the cellular calcium content, real-time PCR to measure the calcification-related gene expression and alizarin red staining to observe the formation of calcium nodules...
October 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
Flora Clément, Xinyi Xu, Caterina F Donini, Alice Clément, Soleilmane Omarjee, Emmanuel Delay, Isabelle Treilleux, Béatrice Fervers, Muriel Le Romancer, Pascale A Cohen, Véronique Maguer-Satta
Bone morphogenetic protein 2 (BMP2) and BMP4 are key regulators of the fate and differentiation of human mammary epithelial stem cells (SCs), as well as of their niches, and are involved in breast cancer development. We established that MCF10A immature mammary epithelial cells reliably reproduce the BMP response that we previously identified in human primary epithelial SCs. In this model, we observed that BMP2 promotes luminal progenitor commitment and expansion, whereas BMP4 prevents lineage differentiation...
October 14, 2016: Cell Death and Differentiation
Wang Yan, Zhao-Ying Chen, Jia-Qi Chen, Hui-Min Chen
BACKGROUND: Neural stem cells (NSCs) are pluripotent and self-renewing cells which could differentiate into diverse types of neural cells, such as dopaminergic (DA) neurons, the loss of which is the typical characteristic of Parkinson's disease (PD). This study aimed to examine the molecular mechanisms of BMP2-mediating NSCs differentiation into DA neurons. METHODS: Different concentrations of BMP2 were used to induce the differentiation of NSCs into DA neurons, which were characterized by the number and the neurite lengths of tyrosine hydroxylase (TH)+ and dopamine transporter (DAT)+ neurons by immunocytochemistry...
2016: American Journal of Translational Research
Sarah E Allison, Yongjuan Chen, Nenad Petrovic, Stefanie Zimmermann, Bjoern Moosmann, Mirko Jansch, Pei H Cui, Colin R Dunstan, Peter I Mackenzie, Michael Murray
Secondary metastases are the leading cause of mortality in patients with breast cancer. Cytochrome P450 (CYP) 2J2 (CYP2J2) is upregulated in many human tumors and generates epoxyeicosanoids from arachidonic acid that promote tumorigenesis and metastasis, but at present there is little information on the genes that mediate these actions. In this study MDA-MB-468 breast cancer cells were stably transfected with CYP2J2 (MDA-2J2 cells) and Affymetrix microarray profiling was undertaken. We identified 182 genes that were differentially expressed in MDA-2J2 cells relative to control (MDA-CTL) cells (log[fold of control]≥2)...
October 5, 2016: International Journal of Biochemistry & Cell Biology
Paola Ciceri, Francesca Elli, Paola Braidotti, Monica Falleni, Delfina Tosi, Gaetano Bulfamante, Geoffrey A Block, Mario Cozzolino
BACKGROUND AND AIMS: High phosphate-induced vascular calcification (VC) and iron deficiency-induced anemia are two major contributors of cardiovascular morbidity and mortality in patients affected by chronic kidney disease (CKD). Since phosphate (Pi) control and iron replacement are common therapies in CKD, the aim of our study was to investigate the effect of iron on high Pi-induced VC in rat vascular smooth muscle cells (VSMCs). METHODS: We treated VSMCs with 5 mM Pi and iron citrate (Fe(3+)) to evaluate Ca deposition by Alizarin Red destaining, DNA fragmentation by ELISA, gene expression by RT-PCR and protein expression by Western blot...
September 30, 2016: Atherosclerosis
Laura Hildebrand, Katja Stange, Alexandra Deichsel, Manfred Gossen, Petra Seemann
Patients with Fibrodysplasia Ossificans Progressiva (FOP) suffer from ectopic bone formation, which progresses during life and results in dramatic movement restrictions. Cause of the disease are point mutations in the Activin A receptor type 1 (ACVR1), with p.R206H being most common. In this study we compared the signalling responses of ACVR1(WT) and ACVR1(R206H) to different ligands. ACVR1(WT), but not ACVR1(R206H) inhibited BMP signalling of BMP2 or BMP4 in a ligand binding domain independent manner. Likewise, the basal BMP signalling activity of the receptor BMPR1A or BMPR1B was inhibited by ACVR1(WT), but enhanced by ACVR1(R206H)...
October 4, 2016: Cellular Signalling
Radhakrishnan Vishnubalaji, Shijun Yue, Musaad Alfayez, Moustapha Kassem, Fei-Fei Liu, Abdullah Aldahmash, Nehad M Alajez
BACKGROUND: Molecular profiling of colorectal cancer (CRC) based on global gene expression has revealed multiple dysregulated signalling pathways associated with drug resistance and poor prognosis. However, the role of BMP2 signaling in CRC is not fully characterised. METHODS: Bioinformatics data analysis were conducted on the GSE21510 dataset. Leniviral technology was utilized to stably express BMP2 in the HCT116 CRC model. Gene expression profiling was conducted using Agilent microarray platform while data normalization and bioinformatics were conducted using GeneSpring software...
2016: Cancer Cell International
Chao Qian, Chenyuan Zhu, Weiqiang Yu, Xinquan Jiang, Fuqiang Zhang, Jian Sun
Type 2 diabetes mellitus impairs osteogenesis in bone marrow stromal cells (BMSCs). Bone morphogenetic protein 2 (BMP2) has been extensively applied for bone defect restoration and has been shown to activate the Wnt signaling pathway. The objective of this study was to investigate the effects of BMP2 on the cell proliferation and osteogenesis of type 2 diabetic BMSCs in rats and explore whether BMP2 induced osteogenesis via the stimulation of Wnt signaling pathway. The cell experiments were divided into DM (diabetic BMSCs), BMP25 (induced with 25ng/ml BMP2), BMP100 (induced with 100ng/ml BMP2) and BMP25 +XAV groups...
October 1, 2016: International Journal of Biochemistry & Cell Biology
O G Davies, L M Grover, M P Lewis, Y Liu
Heterotopic ossification (HO) is a debilitating condition defined by the rapid formation of bone in soft tissues. What makes HO fascinating is firstly the rate at which bone is deposited, and secondly the fact that this bone is structurally and compositionally similar to that of a healthy adult. If the mechanisms governing HO are understood, they have the potential to be exploited for the development of potent osteoinductive therapies. With this aim, we utilised a tissue engineered skeletal muscle model to better understand the role of inflammation on this debilitating phenomenon...
October 3, 2016: Journal of Tissue Engineering and Regenerative Medicine
Chanyuan Jin, Ping Zhang, Min Zhang, Xiao Zhang, Longwei Lv, Hao Liu, Yunsong Liu, Yongsheng Zhou
An imbalance in osteogenesis and adipogenesis is a crucial pathological factor in the development of osteoporosis. Many attempts have been made to develop drugs to prevent and treat this disease. In the present study, we investigated the phenomenon whereby downregulation of SLC7A11 significantly enhanced the osteogenic differentiation of mesenchymal stem cells (MSCs) in vitro, and promoted the bone formation in vivo. Sulfasalazine (SAS), an inhibitor of SLC7A11, increased the osteogenic potential effectively...
October 3, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
Xiao-Yang Ji, Jian-Xun Wang, Bin Liu, Zhu-Qing Zheng, Shao-Yin Fu, Getinet Mekuriaw Tarekegn, Xue Bai, Yong-Sheng Bai, Heng Li, Wen-Guang Zhang
BACKGROUND: The fleece of cashmere goats contains two distinct populations of fibers, a short and fine non-medullated insulating cashmere fiber and a long and coarse medullated guard hair. The former is produced by secondary follicles (SFs) and the later by primary follicles (PFs). Evidence suggests that the induction of PFs and SFs may require different signaling pathways. The regulation of BMP2/4 signaling by noggin and Edar signaling via Downless genes are essential for the induction of SFs and PFs, respectively...
2016: PloS One
S Shanmugaapriya, A van Caam, L de Kroon, Elly L Vitters, B Walgreen, H van Beuningen, E Blaney Davidson, Peter M van der Kraan
OBJECTIVE: RNA-binding protein with multiple splicing (RBPMS) has been shown to physically interact with Smads and enhance transforming growth factor-β (TGF-β)-mediated Smad2/3 transcriptional activity in mammalian cells. Objective of this study was to examine whether expression of RBPMS is regulated by interleukin-1β (IL)-1β and TGF-β superfamily growth factors and whether expression of RBPMS is altered during aging and experimental osteoarthritis. METHODS: Expression of RBPMS protein was investigated in chondrocyte cell lines of murine (H4) and human (G6) origin using Western blot analysis...
October 2016: Cartilage
Qingqing Wu, Bo Yang, Cong Cao, Mengkai Guang, Ping Gong
Aging is associated with peripheral nerve degradation and bone destruction. The aim of the study is to elucidate the influence of sensory denervation on bone metabolism in different age groups by establishing a modified unilateral inferior alveolar nerve transection (IANT) model. The rats, divided into young, middle-aged and aged group, were sacrificed at 1, 2, 4 and 8 weeks after right IANT. The histological changes of mandibles were analyzed by fluorescent double labeling, micro-CT, HE, TRAP and anti-CGRP immunohistochemical staining...
September 29, 2016: Journal of Molecular Histology
Fu Xiong, Zhisong Ji, Yanhui Liu, Yu Zhang, Lingling Hu, Qi Yang, Qinwei Qiu, Lingfeng Zhao, Dong Chen, Zhihui Tian, Xuan Shang, Leitao Zhang, Xiaofeng Wei, Cuixian Liu, Qiuxia Yu, Meichao Zhang, Jing Cheng, Jun Xiong, Dongri Li, Xiuhua Wu, Huijun Yuan, Wenqing Zhang, Xiangmin Xu
Dentin dysplasia type I (DDI) is an autosomal-dominant genetic disorder resulting from dentin defects. The molecular basis of DDI remains unclear. DDI exhibits unique characteristics with phenotypes featuring obliteration of pulp chambers and diminutive root, thus providing a useful model for understanding the genetics of tooth formation. Using a large Chinese family with 14 DDI patients, we mapped the gene locus responsible for DDI to 3p26.1-3p24.3 and further identified a missense mutation, c.353C>A (p...
September 29, 2016: Human Mutation
Michael H Heggeness, Nora Strong, Paul H Wooley, Shang-You Yang
BACKGROUND: The clinical use of recombinant human bone morphogenic protein 2 (rhBMP-2, Infuse) has been associated with nerve-related complications including new-onset sciatica, and retrograde ejaculation. PURPOSE: To better understand the interaction of rhBMP-2 and peripheral nerves with the intent of making procedures safer. STUDY DESIGN/SETTING: Using a mouse model to examine the direct effect of diluted rhBMP-2 (Infuse) on murine sciatic nerves...
September 21, 2016: Spine Journal: Official Journal of the North American Spine Society
Nilüfer Çakır-Özkan, Sinan Eğri, Esengül Bekar, B Zuhal Altunkaynak, Yonca Betil Kabak, Elfide Gizem Kıvrak
PURPOSE: Promising developments have materialized in reconstructive surgical procedures with the applications of tissue engineering. In our study, we used tissue scaffolds fabricated from polylactic acid-polyethylene glycol (PLLA-PEG) copolymers to ensure different release rates of selective growth factors recombinant human bone morphogenetic protein 2 [rhBMP-2] and vascular endothelial growth factor (rhVEGF165) in the repair of mandibular bone defects. MATERIALS AND METHODS: In our experimental study, 54 New Zealand rabbits were used...
August 27, 2016: Journal of Oral and Maxillofacial Surgery
Wencai Shi, Heyang Wang, Xuan Zheng, Xin Jiang, Zheng Xu, Hui Shen, Min Li
Hepcidin synthesis is reported to be inadequate according to the body iron store in patients with non-alcoholic fatty liver disease (NAFLD) undergoing hepatic iron overload (HIO). However, the underlying mechanisms remain unclear. We hypothesize that hepatocyte nuclear factor-4α (HNF-4α) may negatively regulate hepcidin expression and contribute to hepcidin deficiency in NAFLD patients. The effect of HNF-4α on hepcidin expression was observed by transfecting specific HNF-4α small interfering RNA (siRNA) or plasmids into HepG2 cells...
September 23, 2016: Biological Trace Element Research
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