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https://www.readbyqxmd.com/read/28100346/-impact-of-cd137-cd137l-signaling-mediated-exocytosis-of-autophagosome-within-vascular-smooth-muscle-cells-on-the-formation-of-atherosclerotic-calcification
#1
B Li, X Y Li, W Zhong, C Shao, Z Q Wang, W Yuan, J C Yan
Objective: To explore whether CD137-CD137L signaling mediated exocytosis of autophagosome within vascular smooth muscle cells (VSMCs) could influence the formation of atherosclerotic calcification. Methods: Fifteen 8-week-old male ApoE(-/-)(C57BL/6J-KO) mice fed with high fat diet for 5 weeks were randomly divided into three groups by using stochastic indicator method as follows: control group, n=5; agonist-CD137 group: agonist-CD137 antibody 200 μg/2 weeks for 4 weeks, ip, n=5; anti-CD137 group: 200 μg anti-CD137 antibody+ 200 μg agonist-CD137 antibody/2 weeks for 4 weeks, ip, n=5...
January 25, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28098877/differentiation-of-osteoblast%C3%A2-like-cells-and-ectopic-bone-formation-induced-by-bone-marrow-stem-cells-transfected-with-chitosan-nanoparticles-containing-plasmid%C3%A2-bmp2-sequences
#2
Zhang Qing Hong, Liu Meng Tao, Zhang Xiao Bin
The present study investigated the efficiency of the use of chitosan nanoparticles containing plasmid‑bone morphogenetic protein 2 (pBMP2) sequences (CNPBs) to induce the differentiation of bone marrow stem cells (BMSCs) into osteoblast‑like cells that may be able to promote ectopic bone formation. pBMP2s were constructed, and chitosan nanoparticles were incubated with 50, 100 or 200 µg/ml pBMP2. BMSCs were collected from the tibiae and femurs of 6‑week old rats, cultured and treated with the CNPBs or 200 µg/ml pBMP2 as a positive control...
January 17, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28087075/cellular-transcriptional-response-to-zirconia-based-implant-materials
#3
Brigitte Altmann, Kerstin Rabel, Ralf J Kohal, Susanne Proksch, Pascal Tomakidi, Erik Adolfsson, Falk Bernsmann, Paola Palmero, Tobias Fürderer, Thorsten Steinberg
OBJECTIVE: To adequately address clinically important issues such as osseointegration and soft tissue integration, we screened for the direct biological cell response by culturing human osteoblasts and gingival fibroblasts on novel zirconia-based dental implant biomaterials and subjecting them to transcriptional analysis. METHODS: Biomaterials used for osteoblasts involved micro-roughened surfaces made of a new type of ceria-stabilized zirconia composite with two different topographies, zirconium dioxide, and yttria-stabilized zirconia (control)...
January 10, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28081379/direct-gingival-fibroblast-osteoblast-transdifferentiation-via-epigenetics
#4
Y Cho, B Kim, H Bae, W Kim, J Baek, K Woo, G Lee, Y Seol, Y Lee, Y Ku, I Rhyu, H Ryoo
Alveolar bone resorption caused by trauma or periodontal diseases has represented a challenge for both dental clinicians and researchers. In this study, we evaluate the osteogenic potential of human gingival fibroblasts (HGFs) through a direct transdifferentiation from HGFs to functional osteoblasts via epigenetic modification and osteogenic signaling with bone morphogenetic protein 2 (BMP2) in vitro and in vivo. HGF treatment with 5-aza-2'-deoxycytidine (5-aza-dC) induced demethylation in the hypermethylated CpG islands of the osteogenic lineage marker genes RUNX2 and ALP, and subsequent BMP2 treatment successfully drove the fibroblasts to the osteoblasts' lineage...
January 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28063668/activation-of-cd137-signaling-accelerates-vascular-calcification-in-vivo-and-vitro
#5
Yao Chen, Abdul Basit Bangash, Juan Song, Wei Zhong, Cuiping Wang, Chen Shao, Zhongqun Wang, Jinchuan Yan
OBJECTIVES: Vascular calcification is a characteristic feature of atherosclerosis and is considered as an independent predictor of cardiovascular risk. CD137 signaling has previously shown to be involved in atherosclerosis. However, the possible role of CD137 signaling in regulation of vascular calcification has not been reported. In the present study, we investigated the effect of CD137 signaling on vascular calcification in ApoE(-/-) mice and in vascular smooth muscle cells (VSMCs) of mice...
December 30, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28061514/a-genome-wide-association-study-of-vertical-cup-disc-ratio-in-a-latino-population
#6
Drew R Nannini, Mina Torres, Yii-Der I Chen, Kent D Taylor, Jerome I Rotter, Rohit Varma, Xiaoyi Gao
Purpose: Vertical cup-disc ratio (VCDR) is used as a clinical assessment measure to identify and monitor glaucomatous damage to the optic nerve. Previous genetic studies conducted in European and Asian populations have identified many loci associated with VCDR. The genetic factors in other ethnic populations, such as Latino, influencing VCDR remain to be determined. Here, we describe the first genome-wide association study (GWAS) on VCDR in Latino individuals. Methods: We conducted this GWAS on VCDR using 4537 Latino individuals who were genotyped by using either the Illumina OmniExpress BeadChip (∼730K markers) or the Illumina Hispanic/SOL BeadChip (∼2...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28059449/irx3-and-bmp2-regulate-mouse-mesenchymal-cell-chondrogenic-differentiation-in-both-a-sox9-dependent-and-independent-manner
#7
Yoshihiro Tamamura, Kenichi Katsube, Hisashi Mera, Maki Itokazu, Shigeyuki Wakitani
Sox9, a master regulator of cartilage development, controls the cell fate decision to differentiate from mesenchymal to chondrogenic cells. In addition, Sox9 regulates the proliferation and differentiation of chondrocytes, as well as the production of cartilage-specific proteoglycans. The existence of Sox9-independent mechanisms in cartilage development remains to be determined. Here, we attempted to identify genes involved in such putative mechanisms via microarray analysis using a mouse chondrogenic cell line, N1511...
January 6, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28043741/exposure-to-benzo-a-pyrene-impairs-decidualization-and-decidual-angiogenesis-in-mice-during-early-pregnancy
#8
Xueyan Li, Cha Shen, Xueqing Liu, Junlin He, Yubin Ding, Rufei Gao, Xinyi Mu, Yanqing Geng, Yingxiong Wang, Xuemei Chen
Benzo[a]pyrene (BaP) is a ubiquitous environmental persistent organic pollutant and a well-known endocrine disruptor. BaP exposure could alter the steroid balance in females. Endometrium decidualization and decidual angiogenesis are critical events for embryo implantation and pregnancy maintenance during early pregnancy and are modulated by steroids. However, the effect of BaP on decidualization is not clear. This study aimed to explore the effects of BaP on decidualization and decidual angiogenesis in pregnant mice...
December 30, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/28040510/du-huo-ji-sheng-tang-and-its-active-component-ligusticum-chuanxiong-promote-osteogenic-differentiation-and-decrease-the-aging-process-of-human-mesenchymal-stem-cells
#9
Jir-You Wang, Che-Sheng Wen, Shih-Chieh Hung, Pei-Wen Chen, Jen-Hwey Chiu
ETHNOPHARMACOLOGICAL RELEVANCE: Postmenopausal osteoporosis is the most common bone disease worldwide. Information concerning the effects of herbal medicines on mesenchymal cell osteogenesis and senescence remains lacking. AIM OF THIS STUDY: This study was designed to investigate the effects of Du-Huo-Ji-Sheng-Tang (DHJST), a Chinese herbal medicine and its active component Ligusticum chuanxiong on osteogenic differentiation and the aging process of human mesenchymal cells (hMSCs)...
December 28, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28025991/early-cellular-responses-of-bmscs-genetically-modified-with-bfgf-bmp2-co-cultured-with-ligament-fibroblasts-in-a-three-dimensional-model-in%C3%A2-vitro
#10
Bin Li, Ramesh Kumar Jha, Yong-Jian Qi, Qu-Bo Ni, Hui Wang, Biao Chen, Liao-Bin Chen
Currently, a number of strategies including the implantation of bone marrow-derived mesenchymal stem cells (BMSCs) and growth factors have been developed to regenerate the tendon-to-bone interface after performing anterior cruciate ligament reconstruction. However, the mechanisms behind the interactions of the implanted BMSCs and tendon cells remain to be elucidated. The aim of this study was to evaluate the early cellular responses of BMSCs genetically modified with basic growth factor growth factor (bFGF)/bone morphogenic protein 2 (BMP2) and ligament fibroblasts in a three-dimensional co-culture model...
November 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28024612/fabrication-of-a-three-dimensional-%C3%AE-tricalcium-phosphate-gelatin-containing-chitosan-based-nanoparticles-for-sustained-release-of-bone-morphogenetic-protein-2-implication-for-bone-tissue-engineering
#11
Farshid Bastami, Zahrasadat Paknejad, Maissa Jafari, Majid Salehi, Maryam Rezai Rad, Arash Khojasteh
Fabrication of an ideal scaffold having proper composition, physical structure and able to have sustained release of growth factors still is challenging for bone tissue engineering. Current study aimed to design an appropriate three-dimensional (3-D) scaffold with suitable physical characteristics, including proper compressive strength, degradation rate, porosity, and able to sustained release of bone morphogenetic protein-2 (BMP2), for bone tissue engineering. A highly porous 3-D β-tricalcium phosphate (β-TCP) scaffolds, inside of which two perpendicular canals were created, was fabricated using foam-casting technique...
March 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28019696/crmp4-inhibits-bone-formation-by-negatively-regulating-bmp-and-rhoa-signaling
#12
Basem M Abdallah, Florence Figeac, Kenneth H Larsen, Nicholas Ditzel, Pankaj Keshari, Adiba Isa, Abbas Jafari, Thomas L Andersen, Jean-Marie Delaisse, Yoshio Goshima, Toshio Ohshima, Moustapha Kassem
We identified the neuro-protein CRMP4 (collapsing response mediator protein-4) as a non-canonical osteogenic factor that regulating the differentiation of mouse bone marrow skeletal stem cells (bone marrow stromal stem cells, mBMSCs) into osteoblastic cells. CRMP4 is the only member of the CRMP 1-5 family to be expressed by mBMSCs and in osteoprogenitors of both adult mouse and human bones. In vitro gain and loss function of CRMP4 in murine stromal cells revealed its inhibitory effect on osteoblast differentiation...
December 26, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28012106/osteogenic-potential-of-the-transcription-factor-c-myb
#13
V Oralova, E Matalova, M Killinger, L Knopfova, J Smarda, M Buchtova
The transcription factor c-MYB is a well-known marker of undifferentiated cells such as haematopoietic cell precursors, but recently it has also been observed in differentiated cells that produce hard tissues. Our previous findings showed the presence of c-MYB in intramembranous bones and its involvement in the chondrogenic steps of endochondral ossification, where the up-regulation of early chondrogenic markers after c-myb overexpression was observed. Since we previously detected c-MYB in osteoblasts, we aimed to analyse the localisation of c-MYB during later stages of endochondral bone formation and address its function during bone matrix production...
December 24, 2016: Calcified Tissue International
https://www.readbyqxmd.com/read/28004813/electrical-stimulation-drives-chondrogenesis-of-mesenchymal-stem-cells-in-the-absence-of-exogenous-growth-factors
#14
Hyuck Joon Kwon, Gyu Seok Lee, Honggu Chun
Electrical stimulation (ES) is known to guide the development and regeneration of many tissues. However, although preclinical and clinical studies have demonstrated superior effects of ES on cartilage repair, the effects of ES on chondrogenesis remain elusive. Since mesenchyme stem cells (MSCs) have high therapeutic potential for cartilage regeneration, we investigated the actions of ES during chondrogenesis of MSCs. Herein, we demonstrate for the first time that ES enhances expression levels of chondrogenic markers, such as type II collagen, aggrecan, and Sox9, and decreases type I collagen levels, thereby inducing differentiation of MSCs into hyaline chondrogenic cells without the addition of exogenous growth factors...
December 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/28004120/genetic-differences-in-osteogenic-differentiation-potency-in-the-thoracic-ossification-of-the-ligamentum-flavum-under-cyclic-mechanical-stress
#15
Shanglong Ning, Zhongqiang Chen, Dongwei Fan, Chuiguo Sun, Chi Zhang, Yan Zeng, Weishi Li, Xiaofei Hou, Xiaochen Qu, Yunlong Ma, Huilei Yu
Mechanical stress and genetic factors play important roles in the occurrence of thoracic ossification of ligament flavum (TOLF), which can occur at one, two, or multiple levels of the spine. It is unclear whether single- and multiple-level TOLF differ in terms of osteogenic differentiation potency and osteogenesis-related gene expression under cyclic mechanical stress. This was addressed in the present study using patients with non‑TOLF and single‑ and multiple‑level TOLF (n=8 per group). Primary ligament cells were cultured and osteogenesis was induced by application of cyclic mechanical stress...
January 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28002911/extracorporeal-shock-waves-induce-osteogenic-differentiation-of-human-bone-marrow-stromal-cells
#16
A Notarnicola, G Vicenti, G Maccagnano, F Silvestis, P Cafforio, B Moretti
The effects of treatment with shock waves (SW) on osteoblastic cells have already been described. Furthermore, the effects of treatment with SW are also determined by the contextual stimulation of other cell lines, in particular of mesenchymal cells. This is the first experimental study of stimulation of a human mesenchymal stem cell line, taken from bone marrow, using SW (electromagnetic device), with two energy levels. The results showed a significant increase in expression of the main osteoblastic differentiation genes: BMP2, alkaline phosphatase, osteocalcin, COL1A1, RUNX2...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/27987051/expression-patterns-indicate-that-bmp2-4-and-chordin-not-bmp5-8-and-gremlin-mediate-dorsal-ventral-patterning-in-the-mollusk-crassostrea-gigas
#17
Sujian Tan, Pin Huan, Baozhong Liu
Though several bilaterian animals use a conserved BMP2/4-Chordin antagonism to pattern the dorsal-ventral (DV) axis, the only lophotrochozoan species in which early DV patterning has been studied to date, the leech Helobdella robusta, appears to employ BMP5-8 and Gremlin. These findings call into question the conservation of a common DV patterning mechanism among bilaterian animals. To explore whether the unusual DV patterning mechanism in H. robusta is also used in other lophotrochozoan species, we investigated the expression of orthologous genes in the early embryo of a bivalve mollusk, Crassostrea gigas...
December 16, 2016: Development Genes and Evolution
https://www.readbyqxmd.com/read/27986931/bone-morphogenetic-protein-2-regulates-cell-cell-communication-by-down-regulating-connexin43-expression-in-luteinized-human-granulosa-cells
#18
Yan-Ting Wu, Hsun-Ming Chang, He-Feng Huang, Jian-Zhong Sheng, Peter C K Leung
STUDY QUESTION: Does bone morphogenetic protein 2 (BMP2) regulate connexin43 (Cx43) and modulate cell-cell communication in luteinized human granulosa cells? SUMMARY ANSWER: BMP2 decreases gap junction intercellular communication (GJIC) of luteinized human granulosa cells by down-regulating Cx43 expression through an activin receptor-like kinase (ALK)2/ALK3-mediated Sma- and Mad-related protein (SMAD)-dependent signaling pathway. WHAT IS KNOWN ALREADY: BMP2 and its putative receptors are highly expressed in the human corpus luteum and are involved in the process of luteolysis...
December 16, 2016: Molecular Human Reproduction
https://www.readbyqxmd.com/read/27983534/osteoblastic-differentiation-and-cell-calcification-of-adamantinomatous-craniopharyngioma-induced-by-bone-morphogenetic-protein-2
#19
Xiaorong Yan, Dezhi Kang, Jun Pan, Changzhen Jiang, Yuanxiang Lin, Songtao Qi
BACKGROUND: The calcification of adamantinomatous craniopharyngioma (ACP) often creates difficulties for surgical therapy. Nevertheless, the mechanism of ACP calcification is unclear. Our previous studies demonstrated that osteoblastic factors might play important roles in ACP calcification. OBJECTIVE: We examined the effects of recombinant human Bmp2 on ACP cell differentiation by testing osteoblastic proteins and calcium deposition. METHODS: The expression of osteoblastic factors including osteopontin (OPN), Runx2, and osterix in Bmp2-treated ACP cells was examined by western blot and/or real time PCR...
December 9, 2016: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/27967655/encapsulation-of-adenovirus-bmp2-transduced-cells-with-pegda-hydrogels-allows-bone-formation-in-the-presence-of-immune-response
#20
Pedro Alvarez Urena, Eleanor Davis, Corinne Sonnet, Gabrielle Henslee, Zbigniew Gugala, Edward V Strecker, Laura J Linscheid, Maude L Cuchiara, Jennifer L West, Alan R Davis, Elizabeth Olmsted-Davis
Gene therapy approaches have been difficult to implement due to pre-existing immunity against the virus used for delivery. To circumvent this problem, a cell-based approach was developed that avoided the use of free virus within the animal. However, even cells transduced in vitro with E1-E3-deleted adenovirus encoding bone morphogenetic protein 2 (AdBMP2) resulted in production of virus neutralizing antibodies in mice. Further, when mice received an intramuscular injection of nonencoding adenovirus (AdEmpty)-transduced cells, AdBMP2-transduced cells were unable to launch bone formation when an intramuscular injection of these BMP2-producing cells was delivered one week later...
December 14, 2016: Tissue Engineering. Part A
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