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https://www.readbyqxmd.com/read/28527696/essential-roles-of-g9a-in-cell-proliferation-and-differentiation-during-tooth-development
#1
Taichi Kamiunten, Hisashi Ideno, Akemi Shimada, Yoshinori Arai, Tatsuo Terashima, Yasuhiro Tomooka, Yoshiki Nakamura, Kazuhisa Nakashima, Hiroshi Kimura, Yoichi Shinkai, Makoto Tachibana, Akira Nifuji
Teeth develop through interactions between epithelial and mesenchymal tissues mediated by a signaling network comprised of growth factors and transcription factors However, little is known about how epigenetic modifiers affect signaling pathways and thereby regulate tooth formation. We previously reported that the histone 3 lysine 9 (H3K9) methyltransferase (MTase) G9a is specifically enriched in the tooth mesenchyme during mouse development. In this study, we investigated the functions of G9a in tooth development using G9a conditional knockout (KO) mice...
May 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28513870/activation-of-the-nrf2-are-signaling-pathway-prevents-hyperphosphatemia-induced-vascular-calcification-by-inducing-autophagy-in-renal-vascular-smooth-muscle-cells
#2
Li Yao, Jian Wang, Bin-Yao Tian, Tian-Hua Xu, Zi-Tong Sheng
This study investigates the effect of nuclear factor erythroid 2-related factor 2-antioxidant response element (Nrf2-ARE) signaling pathway in vascular calcification (VC) via inducing Autophagy in renal vascular smooth muscle cells (VSMCs). VSMCs were assigned into six experimental groups: the normal control, high phosphorus, si-negative control (si-NC), Nrf2-siRNA, over-expressed Nrf2 and negative control (NC) groups. RT-PCR was applied to detect the mRNA expressions of the desired Nrf2-ARE signaling pathway-related genes (Nrf2, NQO-1, HO-1, γ-GCS)...
May 17, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28513838/the-emerging-role-of-npnt-in-tissue-injury-repair-and-bone-homeostasis
#3
REVIEW
Youqiang Sun, Vincent Kuek, Heng Qiu, Jennifer Tickner, Leilei Chen, Haibin Wang, Wei He, Jiake Xu
Nephronectin (NPNT), a highly conserved extracellular matrix protein, plays an important role in regulating cell adhesion, differentiation, spreading and survival. NPNT protein belongs to epidermal growth factor (EGF)-like superfamily and exhibits several common structural determinants; including EGF-like repeat domains, MAM domain (Meprin, A5 Protein, and Receptor Protein-Tyrosine Phosphatase µ), RGD motif (Arg-Gly-Asp) and a coiled-coil domain. It regulates integrins-mediated signaling pathways via the interaction of its RGD motif with integrin α8β1...
May 17, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28501726/osteogenic-differentiation-of-mesenchymal-stem-cells-is-impaired-by-bone-morphogenetic-protein-7
#4
Paweena Wongwitwichot, Jasadee Kaewsrichan
PURPOSE: Mesenchymal stem cells (MSCs) are multipotent adult stem cells and present in practically all tissues but originally identified within the bone marrow (BM). The differentiation potential of these cells is generally impaired when culturing in vitro for cell expansion. The aim of this study is to speedily increase the numbers of bone marrow derived mesenchymal stem cells (BM-MSCs) with substantially maintaining their differentiation potential in vitro and improving bone formation in vivo...
May 11, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28498443/silencing-of-both-atf4-and-perk-inhibits-cell-cycle-progression-and-promotes-the-apoptosis-of-differentiating-chondrocytes
#5
Zhimeng Wu, Meiling Li, Wei Zheng, Qin Hu, Zhi Cheng, Fengjin Guo
In the current study, we demonstrate that the silencing of protein kinase R (PKR)-like endoplasmic reticulum (ER) kinase (PERK) and activating transcription factor 6 (ATF4) (using small interfering RNA expression constructs) inhibits the chondrocyte cell cycle and proliferation in vitro and ex vivo. The silencing of PERK alone using siRNA against PERK (siPERK) led to arrest in the G1 phase, it decreased the number of cells in the S phase, and delayed progressoin to the G2‑M phase. Co-transfection with siRNA against ATF (siATF4) led to a more profound inhibitory effect on cell cycle progression...
May 10, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28496199/upregulation-and-biological-function-of-transmembrane-protein-119-in-osteosarcoma
#6
Zhen-Huan Jiang, Jun Peng, Hui-Lin Yang, Xing-Li Fu, Jin-Zhi Wang, Lei Liu, Jian-Nong Jiang, Yong-Fei Tan, Zhi-Jun Ge
Osteosarcoma is suggested to be caused by genetic and molecular alterations that disrupt osteoblast differentiation. Recent studies have reported that transmembrane protein 119 (TMEM119) contributes to osteoblast differentiation and bone development. However, the level of TMEM119 expression and its roles in osteosarcoma have not yet been elucidated. In the present study, TMEM119 mRNA and protein expression was found to be up-regulated in osteosarcoma compared with normal bone cyst tissues. The level of TMEM119 protein expression was strongly associated with tumor size, clinical stage, distant metastasis and overall survival time...
May 12, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28494020/pannexin-3-regulates-proliferation-and-differentiation-of-odontoblasts-via-its-hemichannel-activities
#7
Tsutomu Iwamoto, Takashi Nakamura, Masaki Ishikawa, Keigo Yoshizaki, Asuna Sugimoto, Hiroko Ida-Yonemochi, Hayato Ohshima, Masahiro Saito, Yoshihiko Yamada, Satoshi Fukumoto
Highly coordinated regulation of cell proliferation and differentiation contributes to the formation of functionally shaped and sized teeth; however, the mechanism underlying the switch from cell cycle exit to cell differentiation during odontogenesis is poorly understood. Recently, we identified pannexin 3 (Panx3) as a member of the pannexin gap junction protein family from tooth germs. The expression of Panx3 was predominately localized in preodontoblasts that arise from dental papilla cells and can differentiate into dentin-secreting odontoblasts...
2017: PloS One
https://www.readbyqxmd.com/read/28490276/endometrial-stromal-and-epithelial-cells-exhibit-unique-aberrant-molecular-defects-in-patients-with-endometriosis
#8
Philip C Logan, Pamela Yango, Nam D Tran
CONTEXT: Endometriosis is a chronic inflammatory disease that causes pain and infertility in women of reproductive age. OBJECTIVE: To investigate the pathologic pathways in endometrial stromal and epithelial cells that contribute to the manifestation of endometriosis. DESIGN: In vitro cellular and molecular analyses of isolated eutopic endometrial stromal and epithelial cells. METHODS: Eutopic stromal and epithelial cells from endometriotic and normal patients were isolated by fluorescence-activated cell sorting for paired sibling RNA sequencing and microRNA microarray...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28489849/utilizing-bmp-2-muteins-for-treatment-of-multiple-myeloma
#9
Axel Seher, Charlotte Lagler, Thorsten Stühmer, Urs Dietmar Achim Müller-Richter, Alexander Christian Kübler, Walter Sebald, Thomas Dieter Müller, Joachim Nickel
Multiple myeloma (MM) represents a haematological cancer characterized by the pathological hyper proliferation of antibody-producing B-lymphocytes. Patients typically suffer from kidney malfunction and skeletal disorders. In the context of MM, the transforming growth factor β (TGFβ) member Activin A was recently identified as a promoter of both accompanying symptoms. Because studies have shown that bone morphogenetic protein (BMP)-2-mediated activities are counteracted by Activin A, we analysed whether BMP2, which also binds to the Activin A receptors ActRII and ActRIIB but activates the alternative SMAD-1/5/8 pathway, can be used to antagonize Activin A activities, such as in the context of MM...
2017: PloS One
https://www.readbyqxmd.com/read/28473977/mir-155-inhibits-mouse-osteoblast-differentiation-by-suppressing-smad5-expression
#10
Yue Gu, Lianjun Ma, Lei Song, Xiaoping Li, Dong Chen, Xiaoxue Bai
Osteogenesis from preosteoblasts is important for bone tissue engineering. MicroRNAs are a class of endogenous small RNA molecules that potentially modulate osteogenesis. In this study, we found that miR-155 expression was downregulated in a time-dependent manner in cells of the preosteoblast cell line MC3T3-E1 after osteogenic induction using bone morphogenetic protein 2 (BMP2). Transfection with miR-155 decreased alkaline phosphatase (ALP) activity, ALP expression, and the staining intensity of Alizarin Red in MC3T3-E1 cells treated with BMP2, whereas treatment with miR-155 inhibitor promoted BMP2-induced osteoblast differentiation...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28472283/oxldl-derived-lysophosphatidic-acid-promotes-the-progression-of-aortic-valve-stenosis-through-a-lpar1-rhoa-nf-%C3%AE%C2%BAb-pathway
#11
Mohamed Jalloul Nsaibia, Marie-Chloé Boulanger, Rihab Bouchareb, Ghada Mkannez, Khai Le Quang, Fayez Hadji, Deborah Argaud, Abdellaziz Dahou, Yohan Bossé, Marlys L Koschinsky, Philippe Pibarot, Benoit J Arsenault, André Marette, Patrick Mathieu
AIMS: Oxidatively modified lipoproteins may promote the development/progression of calcific aortic valve stenosis (CAVS). Oxidative transformation of low-density lipoprotein (OxLDL) generates lysophosphatidic acid (LPA), a lipid mediator that accumulates in mineralized aortic valves. LPA activates at least 6 different G protein-coupled receptors, which may play a role in the pathophysiology of CAVS. We hypothesized that LPA derived from OxLDL may promote a NF-κB signature that drives osteogenesis in the aortic valve...
May 4, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28470822/pericyte-derived-bone-morphogenetic-protein-4-underlies-white-matter-damage-after-chronic-hypoperfusion
#12
Maiko T Uemura, Masafumi Ihara, Takakuni Maki, Takayuki Nakagomi, Seiji Kaji, Kengo Uemura, Tomohiro Matsuyama, Raj N Kalaria, Ayae Kinoshita, Ryosuke Takahashi
Subcortical small vessel disease (SVD) is characterized by white matter damage resulting from arteriolosclerosis and chronic hypoperfusion. Transforming growth factor beta 1 (TGFB1) is dysregulated in the hereditary SVD, CARASIL (cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy). However, very little is known about the role of the largest group in the TGFB superfamily - the bone morphogenetic proteins (BMPs) - in SVD pathogenesis. The aim of this study was to characterize signaling abnormalities of BMPs in sporadic SVD...
May 4, 2017: Brain Pathology
https://www.readbyqxmd.com/read/28469774/effects-of-altered-cxcl12-cxcr4-axis-on-bmp2-smad-runx2-osterix-axis-and-osteogenic-gene-expressions-during-osteogenic-differentiation-of-mscs
#13
Zhanghua Li, Wei Wang, Haijia Xu, Yu Ning, Weijun Fang, Wen Liao, Ji Zou, Yi Yang, Ningsheng Shao
This study investigated the effects of altered CXCL12/CXCR4 axis on the bone morphogenetic protein 2 (BMP-2)/Smad/runt-related transcription factor 2 (Runx2)/Osterix (Osx) signal axis and osteogenic gene expression during osteogenic differentiation of mesenchymal stem cells (MSCs), to gain understanding of the link between migration and osteogenic differentiation signal axis and MSCs osteogenic differentiation mechanisms. The pHBAd-MCMV- CXCL12-GFP vector (Ad-CXCL12) was constructed and quantitative polymerase chain reaction (qPCR)/western blotting used to determine CXCL12 expression in Ad-CXCL12-transfected MSCs...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28467929/ppar%C3%AE-links-bmp2-and-tgf%C3%AE-1-pathways-in-vascular-smooth-muscle-cells-regulating-cell-proliferation-and-glucose-metabolism
#14
Laurent Calvier, Philippe Chouvarine, Ekaterina Legchenko, Nadine Hoffmann, Jonas Geldner, Paul Borchert, Danny Jonigk, Miklos M Mozes, Georg Hansmann
BMP2 and TGFβ1 are functional antagonists of pathological remodeling in the arteries, heart, and lung; however, the mechanisms in VSMCs, and their disturbance in pulmonary arterial hypertension (PAH), are unclear. We found a pro-proliferative TGFβ1-Stat3-FoxO1 axis in VSMCs, and PPARγ as inhibitory regulator of TGFβ1-Stat3-FoxO1 and TGFβ1-Smad3/4, by physically interacting with Stat3 and Smad3. TGFβ1 induces fibrosis-related genes and miR-130a/301b, suppressing PPARγ. Conversely, PPARγ inhibits TGFβ1-induced mitochondrial activation and VSMC proliferation, and regulates two glucose metabolism-related enzymes, platelet isoform of phosphofructokinase (PFKP, a PPARγ target, via miR-331-5p) and protein phosphatase 1 regulatory subunit 3G (PPP1R3G, a Smad3 target)...
May 2, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28467498/spatial-regulation-of-bone-morphogenetic-proteins-bmps-in-postnatal-articular-and-growth-plate-cartilage
#15
Presley Garrison, Shanna Yue, Jeffrey Hanson, Jeffrey Baron, Julian C Lui
Articular and growth plate cartilage both arise from condensations of mesenchymal cells, but ultimately develop important histological and functional differences. Each is composed of three layers-the superficial, mid and deep zones of articular cartilage and the resting, proliferative and hypertrophic zones of growth plate cartilage. The bone morphogenetic protein (BMP) system plays an important role in cartilage development. A gradient in expression of BMP-related genes has been observed across growth plate cartilage, likely playing a role in zonal differentiation...
2017: PloS One
https://www.readbyqxmd.com/read/28463604/nell-1-hmgb1-and-ccn2-enhance-migration-and-vasculogenesis-but-not-osteogenic-differentiation-compared-to-bmp2
#16
Shorouk Fahmy-Garcia, Marjolein van Driel, Janneke Witte-Buoma, Heike Walles, Johannes Ptm van Leeuwen, Gerjo van Osch, Eric Farrell
Currently, autografts still represent the gold standard treatment for the repair of large bone defects. However, these are associated with donor site morbidity, increased pain, cost and recovery time. The ideal therapy would use biomaterials combined with bone growth factors to induce and instruct bone defect repair without the need to harvest patient tissue. In this line, BMPs have been the most extensively used agents for clinical bone repair, but at supraphysiological doses that are not without risk. Because of the need to eliminate the risks of BMP2 use in vivo, we assessed the ability of three putative osteogenic factors, Nell-1, HMGB1 and CCN2, to enhance the essential processes for bone defect repair in vitro and compared them to BMP2...
May 2, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28459464/bone-morphogenetic-protein-signaling-mediated-by-alk-2-and-dlx2-regulates-apoptosis-in-glioma-initiating-cells
#17
E Raja, A Komuro, R Tanabe, S Sakai, Y Ino, N Saito, T Todo, M Morikawa, H Aburatani, D Koinuma, C Iwata, K Miyazono
Bone morphogenetic protein (BMP) signaling exerts antitumor activities in glioblastoma; however, its precise mechanisms remain to be elucidated. Here, we demonstrated that the BMP type I receptor ALK-2 (encoded by the ACVR1 gene) has crucial roles in apoptosis induction of patient-derived glioma-initiating cells (GICs), TGS-01 and TGS-04. We also characterized a BMP target gene, Distal-less homeobox 2 (DLX2), and found that DLX2 promoted apoptosis and neural differentiation of GICs. The tumor-suppressive effects of ALK-2 and DLX2 were further confirmed in a mouse orthotopic transplantation model...
May 1, 2017: Oncogene
https://www.readbyqxmd.com/read/28457943/actin-cytoskeleton-mediates-bmp2-smad-signaling-via-calponin-1-in-preosteoblast-under-simulated-microgravity
#18
Hongjie Xu, Feng Wu, Hongyu Zhang, Chao Yang, Kai Li, Hailong Wang, Honghui Yang, Yue Liu, Bai Ding, Yingjun Tan, Ming Yuan, Yinghui Li, Zhongquan Dai
Microgravity influences the activity of osteoblast, induces actin microfilament disruption and leads to bone loss during spaceflight. Mechanical stress such as gravity, regulates cell function, response and differentiation through dynamic cytoskeleton changes, but the mechanotransduction mechanism remains to be fully elucidated. Previous, we demonstrated actin microfilament mediated osteoblast Cbfa1 responsiveness to BMP2 under simulated microgravity (SMG). Here, we explored a potential molecular and its detailed mechanism of actin cytoskeleton functioning on BMP2-Smad signaling in MC3T3-E1 under SMG...
April 27, 2017: Biochimie
https://www.readbyqxmd.com/read/28456913/the-effect-and-osteoblast-signaling-response-of-trace-silicon-doping-hydroxyapatite
#19
Tian Sun, Ming Wang, Yiran Shao, Liping Wang, Yingchun Zhu
It is commonly accepted that silicon-doped hydroxyapatite (HAp) can achieve good repair effects for both spinal fusion and bone defect filling. However, the underlying mechanism by which silicon aids such beneficial effects is still not fully understood. Herein, we report on silicon-doped hydroxyapatites with excellent biocompatibility to osteoblast cells and suggest the signaling pathway involved. Non-doped HAp and trace Si-doped HAp (Si/HAp) with Si concentration close to and higher than natural bones were synthesized (i...
April 29, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28455969/bmp2-promotes-proliferation-and-invasion-of-nasopharyngeal-carcinoma-cells-via-mtorc1-pathway
#20
Meng-He Wang, Xiao-Min Zhou, Mei-Yin Zhang, Lu Shi, Ruo-Wen Xiao, Li-Si Zeng, Xian-Zi Yang, X F Steven Zheng, Hui-Yun Wang, Shi-Juan Mai
Bone morphogenetic protein-2 (BMP2) is a secreted protein that highly expressed in a variety of cancers and contributes to cell proliferation, migration, invasiveness, mobility, metastasis and EMT. However, its clinical significance and biological function in nasopharyngeal carcinoma (NPC) remain unknown up to now. Up-regulation of BMP2 was first observed in NPC cell lines by a genome-wide transcriptome analysis in our previous study. In this study, BMP2 mRNA was detected by qRT-PCR and data showed that it was upregulated in NPC compared with non-cancerous nasopharynx samples...
April 2017: Aging
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