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https://www.readbyqxmd.com/read/27842921/suppression-of-osteoblast-related-genes-during-osteogenic-differentiation-of-adipose-tissue-derived-stromal-cells
#1
Yahya Açil, Amir Alexander Ghoniem, Aydin Gülses, Tobias Kisch, Felix Stang, Jörg Wiltfang, Matthias Gierloff
Recent studies indicated a lower osteogenic differentiation potential of adipose tissue-derived stromal cells (ASCs) compared to bone marrow derived mesenchymal stromal cells. The aim of this study was to evaluate the effects of potent combinations of highly osteogenic bone morphogenetic proteins (BMPs) in order to enhance the osteogenic differentiation potential of ASCs. Human ASCs were cultured for 10 days in the presence of osteogenic medium consisting of dexamethasone, ß-glycerophosphate and ascorbat-2-phosphate (OM) supplemented with BMP-2, BMP-6, BMP-9+IGF-2 and BMP-2,-6,-9 (day 1+2: 50 ng/ml, days 3-6: 100 ng/ml, days 7-10: 200 ng/ml)...
October 18, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27826623/-corrigendum-adenovirus-mediated-overexpression-of-bmp-9-inhibits-human-osteosarcoma-cell-growth-and-migration-through-downregulation-of-the-pi3k-akt-pathway
#2
Bo Li, Yuehua Yang, Shengdan Jiang, Binbin Ni, Ke Chen, Leisheng Jiang
Following the publication of this article, an interested reader drew to our attention an anomaly associated with the presentation of the western blots in Fig. 4B and C. These contained the same GAPDH control data, even though Fig. 4B and C were intended to show the inhibition of osteosarcoma cell migration by a recombinant adenovirus (ad) expressing bone morphogenetic protein 9 (adBMP-9) in two different cell lines, MG-63 and HOS, respectively. After having re-examined our original data, we realize that the same GAPDH control bands were inadvertently selected for Fig...
November 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27748860/bone-morphogenetic-protein%C3%A2-9-promotes-the-differentiation-of-mouse-spleen-macrophages-into-osteoclasts-via-the-alk1-receptor-and-erk-1-2-pathways-in%C3%A2-vitro
#3
Hai Li, Dahang Zhao, Shengjing Wang, Jing Ding, Li Zhao
It has been confirmed that bone morphogenetic protein-9 (BMP-9) promotes the differentiation of osteoblasts. However, the ways in which BMP‑9 exerts its effects on the differentiation of osteoclasts and bone resorption remain to be elucidated. The present study was designed to investigate the roles and the molecular mechanism of BMP‑9 on the proliferation and differentiation of osteoclast precursors in vitro. Mouse spleen macrophages (RAW 264.7 cells) were cultured in the presence of receptor activator for nuclear factor‑κb ligand (RANKL) in vitro...
November 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27726024/osteogenic-potential-of-recombinant-human-bone-morphogenetic-protein-9-absorbable-collagen-sponge-rhbmp-9-acs-in-rat-critical-size-calvarial-defects
#4
Toshiaki Nakamura, Yoshinori Shirakata, Yukiya Shinohara, Richard J Miron, Kirara Furue, Kazuyuki Noguchi
OBJECTIVES: It has been reported that bone morphogenetic protein (BMP)-9 has potent osteoinductive properties among the BMP family by adenovirus-transfection experiments. We very recently reported that absorbable collagen sponge (ACS) as a carrier for recombinant human (rh) BMP-9, compared with chitosan sponge, was suitable for inducing bone healing/regeneration by BMP-9 in a rat calvarial defect model. The aim of this study was to evaluate different doses of rhBMP-9/ACS on new bone formation in rat critical size calvarial defects...
October 11, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27650540/bone-morphogenetic-protein-9-is-a-potent-growth-inhibitor-of-hepatocellular-carcinoma-and-reduces-the-liver-cancer-stem-cells-population
#5
Jae Woo Jung, So-Mi Yoon, Subin Kim, Yun-Hui Jeon, Byung-Hak Yoon, Su-Geun Yang, Min Kyoung Kim, Senyon Choe, Mario Meng-Chiang Kuo
The biological role of BMP-9 signaling in liver cancer remains dubious. To explore the potential use of BMP-9 signaling for anti-cancer therapy, we used recombinant human BMP-9, which we referred to as MB109, to study the effect on growth of fifteen hepatocellular carcinoma (HCC) cell lines. MB109 effectively inhibits the proliferation of nine HCC cells in vitro. The anti-proliferative effect was found to be induced by turning on p21 signaling, which caused survivin suppression and G0/G1 cell cycle arrest. ID3 was identified to be the mediator of the MB109-induced p21 expression...
September 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27647829/bone-morphogenetic-protein-9-enhances-lipopolysaccharide-induced-leukocyte-recruitment-to-the-vascular-endothelium
#6
Sarah L Appleby, Claudia-Gabriela Mitrofan, Alexi Crosby, Kim Hoenderdos, Katharine Lodge, Paul D Upton, Clara M Yates, Gerard B Nash, Edwin R Chilvers, Nicholas W Morrell
Bone morphogenetic protein (BMP)9 is a circulating growth factor that is part of the TGF-β superfamily and is an essential regulator of vascular endothelial homeostasis. Previous studies have suggested a role for BMP9 signaling in leukocyte recruitment to the endothelium, but the directionality of this effect and underlying mechanisms have not been elucidated. In this study, we report that BMP9 upregulates TLR4 expression in human endothelial cells and that BMP9 pretreatment synergistically increases human neutrophil recruitment to LPS-stimulated human endothelial monolayers in an in vitro flow adhesion assay...
October 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27528762/targeting-tumour-vasculature-by-inhibiting-activin-receptor-like-kinase-alk-1-function
#7
REVIEW
Amaya García de Vinuesa, Matteo Bocci, Kristian Pietras, Peter Ten Dijke
Angiogenesis is a hallmark of cancer and is now a validated therapeutic target in the clinical setting. Despite the initial success, anti-angiogenic compounds impinging on the vascular endothelial growth factor (VEGF) pathway display limited survival benefits in patients and resistance often develops due to activation of alternative pathways. Thus, finding and validating new targets is highly warranted. Activin receptor-like kinase (ALK)1 is a transforming growth factor beta (TGF-β) type I receptor predominantly expressed in actively proliferating endothelial cells (ECs)...
August 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27528761/regulation-of-the-alk1-ligands-bmp9-and-bmp10
#8
REVIEW
Wei Li, Richard M Salmon, He Jiang, Nicholas W Morrell
Bone morphogenetic protein (BMP)9 and BMP10 are high affinity ligands for activin receptor-like kinase 1 (ALK1), a type I BMP receptor mainly expressed on vascular endothelial cells (ECs). ALK1-mediated BMP9/BMP10 signalling pathways have emerged as essential in EC biology and in angiogenesis. Several genetic mutations in the genes encoding the ligands and receptors of this pathway have been reported in two cardiovascular diseases, pulmonary arterial hypertension (PAH) and hereditary haemorrhagic telangiectasia (HHT)...
August 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27477105/effects-of-bmp-9-and-bmp-2-on-the-pi3k-akt-pathway-in-mc3t3-e1-preosteoblasts
#9
Marc-Antoine Lauzon, Olivier Drevelle, Alex Daviau, Nathalie Faucheux
The bone morphogenetic proteins (BMPs), which are involved in bone formation and repair, play an important role in tissue engineering. For example, BMP-9 and BMP-2, which are members of different BMP subfamilies, are osteoinductive factors. However, several studies have recently shown that BMP-9 is more osteogenic than BMP-2. We have previously shown that fetal bovine serum (FBS) strongly enhances the osteoblast differentiation of murine preosteoblasts (MC3T3-E1) to BMP-9 but not to BMP-2. This effect is mimicked by IGF-2, which primarily activates the PI3K/Akt pathway, but how Akt phosphorylation sites are implicated in such differentiation is unclear...
September 2016: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27373274/structure-and-activation-of-pro-activin-a
#10
Xuelu Wang, Gerhard Fischer, Marko Hyvönen
Activins are growth factors with multiple roles in the development and homeostasis. Like all TGF-β family of growth factors, activins are synthesized as large precursors from which mature dimeric growth factors are released proteolytically. Here we have studied the activation of activin A and determined crystal structures of the unprocessed precursor and of the cleaved pro-mature complex. Replacing the natural furin cleavage site with a HRV 3C protease site, we show how the protein gains its bioactivity after proteolysis and is as active as the isolated mature domain...
2016: Nature Communications
https://www.readbyqxmd.com/read/27284602/-recombinant-adenovirus-mediated-bone-morphogenetic-protein-9-and-erythropoietin-genes-co-transfection-in-promoting-osteogenic-differentiation-of-adipose-derived-stem-cells-in-vitro
#11
Guangde Zhang, Chengshuai Su, Xia Jin, Shimao Yang, Dianji Fang, Yanwei Guo
OBJECTIVE: To investigate the effect of recombinant adenovirus-mediated bone morphogenetic protein 9 (BMP-9) and erythropoietin (EPO) genes co-transfection on osteogenic differentiation of adipose-derived stem cells (ADSCs) in vitro. METHODS: The inguinal adipose tissue was harvested from 4-month-old New Zealand rabbits, ADSCs were isolated with enzyme digestion and adherence method, and multipotent differentiation capacity was identified. The 3rd generation ADSCs were divided into 5 groups: normal cells (group A), empty plasmid control group (group B), BMP-9 or EPO recombinant adenovirus transfected cells (groups C and D), BMP-9 and EPO recombinant adenovirus co-transfected cells (group E)...
March 2016: Chinese Journal of Reparative and Reconstructive Surgery
https://www.readbyqxmd.com/read/27281870/-effect-of-hey1-expression-on-osteogenic-differentiation-and-proliferation-of-c3h10t1-2-cells-induced-by-bone-morphogenetic-protein-9
#12
Miao Wang, Nan Wang, Zhengxue Quan, Xiaoji Luo
OBJECTIVE: To investigate the effect of Notch signaling pathway important target Hey1 expression on the differentiation and proliferation of C3H10T1/2 cells induced by bone morphogenetic protein 9 (BMP-9). METHODS: Hey1 lentivirus and Hey1 short hairpin RNA lentivirus were constructed and used to infect C3H10T1/2 cells to change the expression level of Hey1 in C3H10T1/2 cells. C3H10T1/2 cells infected with LV-Blank (empty plasmid) as control. The Hey1 expression levels of different groups were detected by fluorescence microscope, real-time fluorescence quantitative PCR, and Western blot...
March 2016: Chinese Journal of Reparative and Reconstructive Surgery
https://www.readbyqxmd.com/read/27275929/nanoparticulate-mineralized-collagen-scaffolds-and-bmp-9-induce-a-long-term-bone-cartilage-construct-in-human-mesenchymal-stem-cells
#13
Xiaoyan Ren, Daniel W Weisgerber, David Bischoff, Michael S Lewis, Russell R Reid, Tong-Chuan He, Dean T Yamaguchi, Timothy A Miller, Brendan A C Harley, Justine C Lee
Engineering the osteochondral junction requires fabrication of a microenvironment that supports both osteogenesis and chondrogenesis. Multiphasic scaffold strategies utilizing a combination of soluble factors and extracellular matrix components are ideally suited for such applications. In this work, the contribution of an osteogenic nanoparticulate mineralized glycosaminoglycan scaffold (MC-GAG) and a dually chondrogenic and osteogenic growth factor, BMP-9, in the differentiation of primary human mesenchymal stem cells (hMSCs) is evaluated...
July 2016: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/27252002/bone-healing-capabilities-of-recombinant-human-bone-morphogenetic-protein-9-rhbmp-9-with-a-chitosan-or-collagen-carrier-in-rat-calvarial-defects
#14
Yukiya Shinohara, Toshiaki Nakamura, Yoshinori Shirakata, Kazuyuki Noguchi
The aim of this study was to examine the effects of recombinant human BMP-9 (rhBMP-9) with chitosan sponge (ChiS) or absorbable collagen sponge (ACS) on bone formation in rat calvarial defects. The defects were treated by one of the following implantations: ChiS, rhBMP-9/ChiS, ACS, rhBMP-9/ACS and no implantation. The animals were euthanized at 8 weeks for histological evaluation. The percentage of defect closure (DC) in the rhBMP-9/ACS group was significantly greater than that in the ACS group. The rhBMP-9/ACS group demonstrated the highest level of DC among all the groups...
2016: Dental Materials Journal
https://www.readbyqxmd.com/read/27248821/inhibition-of-alk1-signaling-with-dalantercept-combined-with-vegfr-tki-leads-to-tumor-stasis-in-renal-cell-carcinoma
#15
Xiaoen Wang, Nicolas Solban, Prateek Khanna, Marcella Callea, Jiaxi Song, David C Alsop, R Scott Pearsall, Michael B Atkins, James W Mier, Sabina Signoretti, Marat Alimzhanov, Ravi Kumar, Manoj K Bhasin, Rupal S Bhatt
Treatment of metastatic renal cell carcinoma (mRCC) with agents that block signaling through vascular endothelial growth factor receptor 2 (VEGFR2) induces disease regression or stabilization in some patients; however, these responses tend to be short-lived. Therefore, development of combination therapies that can extend the efficacy of VEGFR antagonists in mRCC remains a priority.We studied murine xenograft models of RCC that become refractory to treatment with the VEGFR tyrosine kinase inhibitor (TKI) sunitinib...
July 5, 2016: Oncotarget
https://www.readbyqxmd.com/read/27085971/bmp-9-enhances-fibroblast-growth-factor-21-expression-and-suppresses-obesity
#16
Sooho Kim, Senyon Choe, Dong Kun Lee
Although BMP-9 has been reported to induce browning of white adipose tissues (WATs) and suppress high fat diet-induced obesity, detailed molecular mechanism needs to be further elucidated. We report here that administration of MB109, a recombinant derivative of human BMP-9, into obese mice enhanced gene expression of fibroblast growth factor 21 (FGF21), a metabolic regulator, and alleviates a spectrum of pathological symptoms due to high fat diet-induced obesity. In addition, periodical injection of MB109 (500μg/kg/week) reduced an amount of lipid droplets in the liver, serum levels of alanine aminotransferase (ALT), and total cholesterol...
July 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27056281/bmp-9-dependent-pathways-required-for-the-chondrogenic-differentiation-of-pluripotent-stem-cells
#17
Alan Cheng, Amber Renee Gustafson, Christine Elizabeth Schaner Tooley, Mei Zhang
Current cartilage repair therapies focus on the delivery of chondrocytes differentiated from mesenchymal stem cells, and thus understanding the factors that promote chondrogenesis may lead to improved therapies. Several bone morphogenetic proteins (BMPs) have been implicated in chondrogenic differentiation and/or chondrocyte function. Although the signaling pathways downstream of BMPs have been studied in other systems, their role in chondrogenesis is less well characterized. Here, we investigated the effects of BMP-9 in chondroprogenitor cells...
December 2016: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/26975812/expression-of-tgf%C3%AE-family-signalling-components-in-ageing-cartilage-age-related-loss-of-tgf%C3%AE-and-bmp-receptors
#18
A van Caam, W Madej, E Thijssen, A Garcia de Vinuesa, W van den Berg, M-J Goumans, P Ten Dijke, E Blaney Davidson, P M van der Kraan
OBJECTIVE: Ageing is the main risk factor for osteoarthritis (OA). We investigated if expression of transforming growth factor β (TGFβ)-family components, a family which is crucial for the maintenance of healthy articular cartilage, is altered during ageing in cartilage. Moreover, we investigated the functional significance of selected age-related changes. DESIGN: Age-related changes in expression of TGFβ-family members were analysed by quantitative PCR in healthy articular cartilage obtained from 42 cows (age: ¾-10 years)...
July 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/26961869/transforming-growth-factor-%C3%AE-family-ligands-can-function-as-antagonists-by-competing-for-type-ii-receptor-binding
#19
Senem Aykul, Erik Martinez-Hackert
Transforming growth factor-β (TGF-β) family ligands are pleiotropic cytokines. Their physiological activities are not determined by a simple coupling of stimulus and response, but depend critically on context, i.e. the interplay of receptors, ligands, and regulators that form the TGF-β signal transduction system of a cell or tissue. How these different components combine to regulate signaling activities remains poorly understood. Here, we describe a ligand-mediated mechanism of signaling regulation. Based on the observation that the type II TGF-β family receptors ActRIIA, ActRIIB, and BMPRII interact with a large group of overlapping ligands at overlapping epitopes, we hypothesized high affinity ligands compete with low affinity ligands for receptor binding and signaling...
May 13, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/26879145/recombinant-human-bone-morphogenetic-protein-9-potently-induces-osteogenic-differentiation-of-human-periodontal-ligament-fibroblasts
#20
Sawako Fuchigami, Toshiaki Nakamura, Kirara Furue, Kotaro Sena, Yukiya Shinohara, Kazuyuki Noguchi
To accomplish effective periodontal regeneration for periodontal defects, several regenerative methods using growth and differentiation factors, including bone morphogenetic proteins (BMPs), have been developed. Bone morphogenetic protein-9 exhibits the most potent osteogenic activity of this growth factor family. However, it is unclear whether exogenous BMP-9 can induce osteogenic differentiation in human periodontal ligament (PDL) fibroblasts. Here, we examined the effects of recombinant human (rh) BMP-9 on osteoblastic differentiation in human PDL fibroblasts in vitro, compared with rhBMP-2...
April 2016: European Journal of Oral Sciences
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