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https://www.readbyqxmd.com/read/27922190/clc-3-promotes-osteogenic-differentiation-in-mc3t3-e1-cell-after-dynamic-compression
#1
Dawei Wang, Hao Wang, Feng Gao, Kun Wang, Fusheng Dong
ClC-3 chloride channel has been proved to have a relationship with the expression of osteogenic markers during osteogenesis, persistent static compression can upregulate the expression of ClC-3 and regulate osteodifferentiation in osteoblasts. However, there was no study about the relationship between the expression of ClC-3 and osteodifferentiation after dynamic compression. In this study, we applied dynamic compression on MC3T3-E1 cells to detect the expression of ClC-3, runt-related transcription factor 2 (Runx2), bone morphogenic protein-2 (BMP-2), osteopontin (OPN), nuclear-associated antigen Ki67 (Ki67) and proliferating cell nuclear antigen (PCNA) in biopress system, then we investigated the expression of these genes after dynamic compression with Chlorotoxin (specific ClC-3 chloride channel inhibitor) added...
December 6, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27922109/regulation-of-hepcidin-expression-by-inflammation-induced-activin-b
#2
Yohei Kanamori, Makoto Sugiyama, Osamu Hashimoto, Masaru Murakami, Tohru Matsui, Masayuki Funaba
Activin B is induced in response to inflammation in the liver and enhances hepcidin expression, but the source of activin B and the molecular mechanism underlying hepcidin induction are not clear yet. Lipopolysaccharide (LPS)-induced inflammation induced inhibin βB but not inhibin α or inhibin βA expression in the liver, implicating activin B induction. Immunoreactive inhibin βB was detected in endothelial cells and Kupffer cells in LPS-treated liver. Activin B, but not activin A or activin AB, directly increased hepcidin expression...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27920522/incorporation-of-heparin-binding-proteins-into-preformed-dextran-sulfate-chitosan-nanoparticles
#3
Paula Zaman, Julia Wang, Adam Blau, Weiping Wang, Tina Li, Daniel S Kohane, Joseph Loscalzo, Ying-Yi Zhang
Incorporation of proteins into dextran sulfate (DS)-chitosan (CS) nanoparticles (DSCS NPs) is commonly performed using entrapment procedures, in which protein molecules are mixed with DS and CS until particle formation occurs. As DS is an analog of heparin, the authors examined whether proteins could be directly incorporated into preformed DSCS NPs through a heparin binding domain-mediated interaction. The authors formulated negatively-charged DSCS NPs, and quantified the amount of charged DS in the outer shell of the particles...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27920253/bmp-induces-osteoblast-differentiation-through-both-smad4-and-mtorc1-signaling
#4
Courtney M Karner, Seung-Yon Lee, Fanxin Long
The bone morphogenetic protein (Bmp) family of secreted molecules has been extensively studied in the context of osteoblast differentiation. However, the intracellular signaling cascades mediating the osteoblastogenic function of Bmp have not been fully elucidated. By profiling mRNA expression in the bone marrow mesenchymal progenitor cell line ST2 cells, we discover that BMP2 induces not only genes commonly associated with ossification and mineralization, but also genes important for general protein synthesis...
December 5, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27920040/regulation-of-tgf-%C3%AE-family-signaling-by-inhibitory-smads
#5
Keiji Miyazawa, Kohei Miyazono
Inhibitory Smads (I-Smads) have conserved carboxy-terminal MH2 domains but highly divergent amino-terminal regions when compared with receptor-regulated Smads (R-Smads) and common-partner Smads (co-Smads). Smad6 preferentially inhibits Smad signaling initiated by the bone morphogenetic protein (BMP) type I receptors ALK-3 and ALK-6, whereas Smad7 inhibits both transforming growth factor β (TGF-β)- and BMP-induced Smad signaling. I-Smads also regulate some non-Smad signaling pathways. Here, we discuss the vertebrate I-Smads, their roles as inhibitors of Smad activation and regulators of receptor stability, as scaffolds for non-Smad signaling, and their possible roles in the nucleus...
December 5, 2016: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/27919666/calreticulin-is-a-secreted-bmp-antagonist-expressed-in-hensen-s-node-during-neural-induction
#6
Irene De Almeida, Nidia M M Oliveira, Rebecca A Randall, Caroline S Hill, John M McCoy, Claudio D Stern
Hensen's node is the "organizer" of the avian and mammalian early embryo. It has many functions, including neural induction and patterning of the ectoderm and mesoderm. Some of the signals responsible for these activities are known but these do not explain the full complexity of organizer activity. Here we undertake a functional screen to discover new secreted factors expressed by the node at this time of development. Using a Signal Sequence Trap in yeast, we identify several candidates. Here we focus on Calreticulin...
December 2, 2016: Developmental Biology
https://www.readbyqxmd.com/read/27919626/targeted-delivery-of-glucocorticoids-to-macrophages-in-a-mouse-model-of-multiple-sclerosis-using-inorganic-organic-hybrid-nanoparticles
#7
Elena Montes-Cobos, Sarah Ring, Henrike J Fischer, Joachim Heck, Judith Strauß, Markus Schwaninger, Sybille D Reichardt, Claus Feldmann, Fred Lühder, Holger M Reichardt
Glucocorticoids (GC) are widely used to treat acute relapses in multiple sclerosis (MS) patients, but their application is accompanied by side effects due to their broad spectrum of action. Here, we report on the therapeutic option to apply GC via inorganic-organic hybrid nanoparticles (IOH-NP) with the composition [ZrO](2+)[(BMP)0.9(FMN)0.1](2-) (designated BMP-NP with BMP: betamethasone phosphate; FMN: flavinmononucleotide). We found that these BMP-NP have an increased cell type-specificity compared to free GC while retaining full therapeutic efficacy in a mouse model of MS...
December 2, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27919545/the-effects-of-pre-aeration-and-inoculation-on-solid-state-anaerobic-digestion-of-rice-straw
#8
Ying Zhou, Chao Li, Ivo Achu Nges, Jing Liu
Pre-aeration was investigated for enhancing biodegradation of recalcitrant lignocellulosic structure of rice straw under various low temperatures regimes (25, 35 and 45°C) and aeration durations (0, 2, 4, 6 and 8days). It was demonstrated aerated rice straw for 2days at 35°C resulted in highest hydrolytic efficiency and biochemical methane potential (BMP) (355.3±18.7mlCH4/gVS). Furthermore, both methane yields and initiation speeds of the solid-state anaerobic digestion (SS-AD) were inversely proportional to substrate-to-inoculum ratios due to the accumulation of volatile fatty acids (VFAs) and poor mass transfer...
November 29, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27918081/st1926-attenuates-steroid-induced-osteoporosis-in-rats-by-inhibiting-inflammation-response
#9
Hong-Xing Zhao, Yuan-Xia Huang, Jin-Gang Tao
Steroid, also known as glucocorticoid, induced osteonecrosis of the femoral head in young adults, which has been a challenging disorder for the frequent incidence of collapse of femoral head, leading to dysfunction of hip joint and impairing life quality of human. Bioavailable and less toxic synthetic retinoids, such as the atypical adamantyl retinoid ST1926, have been developed and investigated in clinical trials for many diseases. Serum lipid-related indicators were assessed to elucidate the role of ST1926 in regulating lipid metabolism...
December 5, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27916889/hyaluronic-acid-gel-based-scaffolds-as-potential-carrier-for-growth-factors-an-in-vitro-bioassay-on-its-osteogenic-potential
#10
Masako Fujioka-Kobayashi, Benoit Schaller, Eizaburo Kobayashi, Maria Hernandez, Yufeng Zhang, Richard J Miron
Hyaluronic acid (HA) has been utilized for a variety of regenerative medical procedures due to its widespread presence in connective tissue and perceived biocompatibility. The aim of the present study was to investigate HA in combination with recombinant human bone morphogenetic protein 9 (rhBMP9), one of the most osteogenic growth factors of the BMP family. HA was first combined with rhBMP9 and assessed for the adsorption and release of rhBMP9 over 10 days by ELISA. Thereafter, ST2 pre-osteoblasts were investigated by comparing (1) control tissue culture plastic, (2) HA alone, and (3) HA with rhBMP9 (100 ng/mL)...
November 30, 2016: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/27913219/tbx2-regulates-anterior-neural-specification-by-repressing-fgf-signaling-pathway
#11
Gun-Sik Cho, Dong-Seok Park, Sun-Cheol Choi, Jin-Kwan Han
During early embryogenesis, FGF signals regulate the antero-posterior (AP) patterning of the neural plate by promoting posterior cell fates. In particular, BMP signal-mediated attenuation of FGF pathway plays a critical role in the determination of the anterior neural region. Here we show that Tbx2, a T-box transcriptional repressor regulates anterior neural specification by suppressing FGF8 signaling pathway in Xenopus embryo. Tbx2 is expressed in the anterior edge of the neural plate in early neurulae. Overexpression and knockdown of Tbx2 induce expansion and reduction in the expression of anterior neural markers, respectively...
November 30, 2016: Developmental Biology
https://www.readbyqxmd.com/read/27912989/assessment-of-methane-production-from-shredder-waste-in-landfills-the-influence-of-temperature-moisture-and-metals
#12
Ehsan Fathi Aghdam, Charlotte Scheutz, Peter Kjeldsen
In this study, methane (CH4) production rates from shredder waste (SW) were determined by incubation of waste samples over a period of 230days under different operating conditions, and first-order decay kinetic constants (k-values) were calculated. SW and sterilized SW were incubated under different temperatures (20-25°C, 37°C, and 55°C), moisture contents (35% and 75% w/w) and amounts of inoculum (5% and 30% of the samples wet weight). The biochemical methane potential (BMP) from different types of SW (fresh, old and sieved) was determined and compared...
November 29, 2016: Waste Management
https://www.readbyqxmd.com/read/27911728/modulation-of-bmp-signalling-by-integrins
#13
REVIEW
Hilary L Ashe
The bone morphogenetic protein (BMP) pathway is a major conserved signalling pathway with diverse roles in development and homeostasis. Given that cells exist in three-dimensional environments, one important area is to understand how the BMP pathway operates within such complex cellular environments. The extracellular matrix contains information regarding tissue architecture and its mechanical properties that is transmitted to the cell via integrin receptors. In this review, I describe various examples of modulation of the BMP pathway by integrins...
October 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27911727/role-of-the-bone-morphogenic-protein-pathway-in-developmental-haemopoiesis-and-leukaemogenesis
#14
REVIEW
Parto Toofan, Helen Wheadon
Myeloid leukaemias share the common characteristics of being stem cell-derived clonal diseases, characterised by excessive proliferation of one or more myeloid lineage. Chronic myeloid leukaemia (CML) arises from a genetic alteration in a normal haemopoietic stem cell (HSC) giving rise to a leukaemic stem cell (LSC) within the bone marrow (BM) 'niche'. CML is characterised by the presence of the oncogenic tyrosine kinase fusion protein breakpoint cluster region-abelson murine leukaemia viral oncogene homolog 1 (BCR-ABL), which is responsible for driving the disease through activation of downstream signal transduction pathways...
October 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27909729/self-renewal-molecular-mechanisms-of-colorectal-cancer-stem-cells
#15
Tianhui Pan, Jinghong Xu, Yongliang Zhu
Colorectal cancer stem cells (CCSCs) represent a small fraction of the colorectal cancer cell population that possess self-renewal and multi-lineage differentiation potential and drive tumorigenicity. Self-renewal is essential for the malignant biological behaviors of colorectal cancer stem cells. While the self-renewal molecular mechanisms of colorectal cancer stem cells are not yet fully understood, the aberrant activation of signaling pathways, such as Wnt, Notch, transforming growth factor-β (TGF-β)/bone morphogenetic protein (BMP) and Hedgehog-Gli (HH-GLI), specific roles mediated by cell surface markers and micro-environmental factors are involved in the regulation of self-renewal...
November 30, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27909654/bone-substitutes-and-expanders-in-spine-surgery-a-review-of-their-fusion-efficacies
#16
Abhijeet Kadam, Paul W Millhouse, Christopher K Kepler, Kris E Radcliff, Michael G Fehlings, Michael E Janssen, Rick C Sasso, James J Benedict, Alexander R Vaccaro
STUDY DESIGN: A narrative review of literature. OBJECTIVE: This manuscript intends to provide a review of clinically relevant bone substitutes and bone expanders for spinal surgery in terms of efficacy and associated clinical outcomes, as reported in contemporary spine literature. SUMMARY OF BACKGROUND DATA: Ever since the introduction of allograft as a substitute for autologous bone in spinal surgery, a sea of literature has surfaced, evaluating both established and newly emerging fusion alternatives...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909410/mechanosensitive-molecular-networks-involved-in-transducing-resistance-exercise-signals-into-muscle-protein-accretion
#17
REVIEW
Emil Rindom, Kristian Vissing
Loss of skeletal muscle myofibrillar protein with disease and/or inactivity can severely deteriorate muscle strength and function. Strategies to counteract wasting of muscle myofibrillar protein are therefore desirable and invite for considerations on the potential superiority of specific modes of resistance exercise and/or the adequacy of low load resistance exercise regimens as well as underlying mechanisms. In this regard, delineation of the potentially mechanosensitive molecular mechanisms underlying muscle protein synthesis (MPS), may contribute to an understanding on how differentiated resistance exercise can transduce a mechanical signal into stimulation of muscle accretion...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27908598/cell-compaction-influences-the-regenerative-potential-of-passaged-bovine-articular-chondrocytes-in-an-ex%C3%A2-vivo-cartilage-defect-model
#18
Michael Schmutzer
The loss and degradation of articular cartilage tissue matrix play central roles in the process of osteoarthritis (OA). New models for evaluating cartilage repair/regeneration are thus of great value for transferring various culture systems into clinically relevant situations. The repair process can be better monitored in ex vivo systems than in in vitro cell cultures. I have therefore established an ex vivo defect model prepared from bovine femoral condyles for evaluating cartilage repair by the implantation of cells cultured in various ways, e...
November 28, 2016: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/27907131/itraq-based-quantitative-proteomic-comparison-of-early-and-late-passage-human-dermal-papilla-cell-secretome-in-relation-to-inducing-hair-follicle-regeneration
#19
Huan Zhang, Ning-Xia Zhu, Keng Huang, Bo-Zhi Cai, Yang Zeng, Yan-Ming Xu, Yang Liu, Yan-Ping Yuan, Chang-Min Lin
Alopecia is an exceedingly prevalent problem that lacks effective therapy. Recently, research has focused on early-passage dermal papilla cells (DPCs), which have hair inducing activity both in vivo and in vitro. Our previous study indicated that factors secreted from early-passage DPCs contribute to hair follicle (HF) regeneration. To identify which factors are responsible for HF regeneration and why late-passage DPCs lose this potential, we collected 48-h-culture medium (CM) from both of passage 3 and 9 DPCs, and subcutaneously injected the DPC-CM into NU/NU mice...
2016: PloS One
https://www.readbyqxmd.com/read/27906446/study-on-adhesion-proliferation-and-differentiation-of-osteoblasts-promoted-by-new-absorbable-bioactive-glass-injection-in-vitro
#20
A Axrap, J Wang, Y Liu, M Wang, A Yusuf
OBJECTIVE: The objective of this study was to evaluate adhesion, proliferation and differentiation of osteoblasts grown on absorbable bioactive glass-calcium phosphate cement injection (BG-CPC) materials in vitro. MATERIALS AND METHODS: BG-CPC composite biomaterial samples were prepared in vitro, for culture with MC3T3-E1 rat osteoblasts. Cells were divided into CPC, BG and BG-CPC treated groups. After cultivation for 3d, cells were stained with rhodamine-phalloidin and 4',6-diamidino-2-phenylindole (DAPI) and observed by fluorescence microscopy for osteoblast morphology on the surface of biomaterials...
November 2016: European Review for Medical and Pharmacological Sciences
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