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Bone morphogenic protein

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https://www.readbyqxmd.com/read/28925352/bmps-direct-sensory-interneuron-identity-in-the-developing-spinal-cord-using-signal-specific-not-morphogenic-activities
#1
Madeline G Andrews, Lorenzo M Del Castillo, Eliana Ochoa-Bolton, Ken Yamauchi, Jan Smogorzewski, Samantha J Butler
The Bone Morphogenetic Protein (BMP) family reiteratively signals to direct disparate cellular fates throughout embryogenesis. In the developing dorsal spinal cord, multiple BMPs are required to specify sensory interneurons (INs). Previous studies suggested that the BMPs act as concentration-dependent morphogens to direct IN identity, analogous to the manner in which sonic hedgehog patterns the ventral spinal cord. However, it remains unresolved how multiple BMPs would cooperate to establish a unified morphogen gradient...
September 19, 2017: ELife
https://www.readbyqxmd.com/read/28921810/bones-morphogenic-protein-4-and-retinoic-acid-combined-treatment-comparative-analysis-for-in-vitro-differentiation-potential-of-murine-mesenchymal-stem-cells-derived-from-bone-marrow-and-adipose-tissue-into-germ-cells
#2
Maryam H Shirzeily, Neda Khanlarkhani, Fardin Amidi, Farshad H Shirzeily, Fereydoon S Aval, Aligholi Sobhani
Nowadays, infertility is no longer considered as an unsolvable disorder due to progresses in germ cells derived from stem lineage with diverse origins. Technical and ethical challenges push researchers to investigate various tissue sources to approach more efficient gametes. The purpose of the current study is to investigate the efficacy of a combined medium, retinoic acid (RA) together with Bone Morphogenic Protein-4 (BMP4), on differentiation of Bone Marrow Mesenchymal Stem Cells (BMMSCs) and adipose-derived mesenchymal stem cells (ADMSCs) into germ cells...
September 18, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28911317/generation-of-ips-derived-model-cells-for-analyses-of-hair-shaft-differentiation
#3
Takumi Kido, Tomoatsu Horigome, Minori Uda, Naoki Adachi, Yohei Hirai
Biological evaluation of hair growth/differentiation activity in vitro has been a formidable challenge, primarily due to the lack of relevant model cell systems. To solve this problem, we generated a stable model cell line in which successive differentiation via epidermal progenitors to hair components is easily inducible and traceable. Mouse induced pluripotent stem (iPS) cell-derived cells were selected to stably express a tetracycline (Tet)-inducible bone morphogenic protein-4 (BMP4) expression cassette and a luciferase reporter driven by a hair-specific keratin 31 gene (krt31) promoter (Tet-BMP4-KRT31-Luc iPS)...
September 1, 2017: BioTechniques
https://www.readbyqxmd.com/read/28893872/targeting-bone-morphogenic-protein-receptor-2-bmpr2-signalling-to-treat-pulmonary-arterial-hypertension
#4
EDITORIAL
Lewis J Rubin
No abstract text is available yet for this article.
September 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28871656/fabrication-of-a-biomimetic-zeinpda-nanofibrous-scaffold-impregnated-with-bmp-2-peptide-conjugated-tio2-nanoparticle-for-bone-tissue-engineering
#5
Babitha Sekar, Meenakshi Annamalai, Michal Marcin Dykas, Surajit Saha, Kingshuk Poddar, Jayarama Reddy Venugopal, Seeram Ramakrishna, Thirumalai Venkatesan, Purna Sai Korrapati
A biomimetic Zein polydopamine (PDA) based nanofiber scaffold was fabricated to deliver bone morphogenic protein-2 (BMP-2) peptide conjugated titanium dioxide (TiO2 ) nanoparticles in a sustained manner for investigating its osteogenic differentiation potential. To prolong its retention time at the target site, BMP-2 peptide has been conjugated to TiO2 nanoparticles owing to its high surface to volume ratio. The effect of biochemical cues from BMP-2 peptide and nano topographical stimulation of electrospun Zein PDA nanofibers were examined for its enhanced osteogenic expression of human fetal osteoblast (hFOB) cells...
September 4, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28864168/liuweiwuling-tablets-attenuate-bdl-induced-hepatic-fibrosis-via-modulation-of-tgf-%C3%AE-smad-and-nf-%C3%AE%C2%BAb-signaling-pathways
#6
Huimin Liu, Fang Dong, Guangquan Li, Ming Niu, Congen Zhang, Yanzhong Han, Lanzhi He, Ping Yin, Bin Wang, Xiuxiu Sang, Ruishen Li, Jiabo Wang, Zhaofang Bai, Xiaohe Xiao
ETHNOPHARMACOLOGICAL RELEVANCE: Liuweiwuling (LWWL) tablets contain a six-herb Chinese formula and are commonly prescribed to facilitate nourishment of the liver and kidneys, clear away toxic materials and activate blood circulation. Administration of LWWL is well known for its protective effects on the liver and its capacity to confer long-term stability in patients exhibiting reduced transaminase levels. Clinical studies have reported that LWWL can also be used for the treatment of liver fibrosis with associated treatment regimens resulting in a concomitant reduction in transforming growth factor β1 (TGF-β1) levels in the serum of patients with hepatic fibrosis...
August 31, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28852936/down-regulation-of-pax2-promotes-in-vitro-differentiation-of-podocytes-from-human-cd34-cells
#7
Manne Mudhu Sunitha, Lokanathan Srikanth, Pasupuleti Santhosh Kumar, Chodimella Chandrasekhar, Potukuchi Venkata Gurunadha Krishna Sarma
Podocytes are major kidney cells that help in glomerular filtration and any damage or loss is a major event in the progression of kidney diseases. Understanding podocytes development will help in designing therapeutic strategies against these renal diseases. Therefore, in vitro generation of podocytes from adult hematopoietic CD34(+) stem cells is explored in the present study. Apheretically, isolated human HSCs from peripheral blood showed the presence of CD34 surface glycoprotein through immunocytochemistry (ICC) and flowcytometry...
August 29, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28852327/dynamic-fixation-of-humeral-shaft-fractures-using-active-locking-plates-a-prospective-observational-study
#8
Steven M Madey, Stanley Tsai, Daniel C Fitzpatrick, Kathleen Earley, Michael Lutsch, Michael Bottlang
BACKGROUND: Rigid locked plating constructs can suppress fracture healing by inhibiting interfragmentary motion required to stimulate natural bone healing by callus formation. Dynamic fixation with active locking plates reduces construct stiffness, enables controlled interfragmentary motion, and has been shown to induce faster and stronger bone healing in vivo compared to rigid locking plates. This prospective observational study represents the first clinical use of active locking plates...
2017: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/28844842/cerebral-vein-malformations-result-from-loss-of-twist1-expression-and-bmp-signaling-from-skull-progenitor-cells-and-dura
#9
Max A Tischfield, Caroline D Robson, Nicole M Gilette, Shek Man Chim, Folasade A Sofela, Michelle M DeLisle, Alon Gelber, Brenda J Barry, Sarah MacKinnon, Linda R Dagi, Jeremy Nathans, Elizabeth C Engle
Dural cerebral veins (CV) are required for cerebrospinal fluid reabsorption and brain homeostasis, but mechanisms that regulate their growth and remodeling are unknown. We report molecular and cellular processes that regulate dural CV development in mammals and describe venous malformations in humans with craniosynostosis and TWIST1 mutations that are recapitulated in mouse models. Surprisingly, Twist1 is dispensable in endothelial cells but required for specification of osteoprogenitor cells that differentiate into preosteoblasts that produce bone morphogenetic proteins (BMPs)...
September 11, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28837672/cardiac-transcriptome-profiling-of-diabetic-akita-mice-using-microarray-and-next-generation-sequencing
#10
Varun Kesherwani, Hamid R Shahshahan, Paras K Mishra
Although diabetes mellitus (DM) causes cardiomyopathy and exacerbates heart failure, the underlying molecular mechanisms for diabetic cardiomyopathy/heart failure are poorly understood. Insulin2 mutant (Ins2+/-) Akita is a mouse model of T1DM, which manifests cardiac dysfunction. However, molecular changes at cardiac transcriptome level that lead to cardiomyopathy remain unclear. To understand the molecular changes in the heart of diabetic Akita mice, we profiled cardiac transcriptome of Ins2+/- Akita and Ins2+/+ control mice using next generation sequencing (NGS) and microarray, and determined the implications of differentially expressed genes on various heart failure signaling pathways using Ingenuity pathway (IPA) analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28826472/systems-biology-derived-source-sink-mechanism-of-bmp-gradient-formation
#11
Joseph Zinski, Ye Bu, Xu Wang, Wei Dou, David Umulis, Mary C Mullins
A morphogen gradient of Bone Morphogenetic Protein (BMP) signaling patterns the dorsoventral embryonic axis of vertebrates and invertebrates. The prevailing view in vertebrates for BMP gradient formation is through a counter-gradient of BMP antagonists, often along with ligand shuttling to generate peak signaling levels. To delineate the mechanism in zebrafish, we precisely quantified the BMP activity gradient in wild-type and mutant embryos and combined these data with a mathematical model-based computational screen to test hypotheses for gradient formation...
August 9, 2017: ELife
https://www.readbyqxmd.com/read/28815333/comparison-of-different-culture-conditions-for-smooth-muscle-cell-differentiation-of-human-umbilical-cord-vein-cd146-perivascular-cells
#12
Beyza Gökçinar-Yagci, Betül Çelebi-Saltik
Pericytes are CD146+ perivascular cells (PCs) that have multipotential differentiation capacity as mesenchymal stem cells. Beside their crucial roles in vascular development and blood flow regulation, they have ability to differentiate into vascular cell types in vivo. These properties make pericytes preferred cells in the field of vascular tissue engineering. Culture medium for in vitro differentiation of pericytes to vascular smooth muscle cells (SMCs) has not been defined yet. The aim of this study is to try different culture media for SMC differentiation of CD146+ PCs...
August 16, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28806146/three-dimensional-bioprinting-of-polycaprolactone-reinforced-gene-activated-bioinks-for-bone-tissue-engineering
#13
Gráinne M Cunniffe, Tomas Gonzalez-Fernandez, Andrew Daly, Binulal N Sathy, Oju Jeon, Eben Alsberg, Daniel J Kelly
Regeneration of complex bone defects remains a significant clinical challenge. Multi-tool biofabrication has permitted the combination of various biomaterials to create multifaceted composites with tailorable mechanical properties and spatially controlled biological function. In this study we sought to use bioprinting to engineer nonviral gene activated constructs reinforced by polymeric micro-filaments. A gene activated bioink was developed using RGD-γ-irradiated alginate and nano-hydroxyapatite (nHA) complexed to plasmid DNA (pDNA)...
August 14, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28780023/shared-acvr1-mutations-in-fop-and-dipg-opportunities-and-challenges-in-extending-biological-and-clinical-implications-across-rare-diseases
#14
Harry J Han, Payal Jain, Adam C Resnick
Gain-of-function mutations in the Type I Bone Morphogenic Protein (BMP) receptor ACVR1 have been identified in two diseases: Fibrodysplasia Ossificans Progressiva (FOP), a rare autosomal dominant disorder characterized by genetically driven heterotopic ossification, and in 20-25% of Diffuse Intrinsic Pontine Gliomas (DIPGs), a pediatric brain tumor with no effective therapies and dismal median survival. While the ACVR1 mutation is causal for FOP, its role in DIPG tumor biology remains under active investigation...
August 2, 2017: Bone
https://www.readbyqxmd.com/read/28777920/complications-associated-with-the-use-of-recombinant-human-bone-morphogenic-protein-2-in-ridge-augmentation-a-case-report
#15
Panagiotis Dragonas, Charles Palin, Saba Khan, Praveen Gajendrareddy, Whitney Weiner
This case report aims to describe in detail a complication associated with resorption of regenerated bone following implant placement and ridge augmentation using rhBMP-2 in combination with allograft and xenograft. Bilateral maxillary sinus and ridge augmentation procedures were completed using rhBMP-2 combined with allograft and xenograft. Five months later, significant bone augmentation was achieved which allowed for the placement of 4 implants. Upon stage 2 surgery, significant dehiscence was noted in all implants...
August 4, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28774557/fibroblast-growth-factor-21-plays-an-inhibitory-role-in-vascular-calcification-in%C3%A2-vitro-through-opg-rankl-system
#16
Fangying Cao, Xiaoxiao Liu, Xiangrong Cao, Shaoping Wang, Kun Fu, Yejing Zhao, Fang Shen, Jinghua Liu
Vascular calcification is prevalent and associated with adverse outcome without available therapy. The benefits of fibroblast growth factor (FGF)-21 on metabolism and atherosclerosis make it a promising therapeutic agent for vascular calcification. We investigated the effects of FGF21 on vascular smooth muscle cell (VSMC) calcification by culturing rat VSMCs in a calcifying medium for 9days. FGF21 markedly attenuated mineral deposition and apoptosis at the indicated time points. In the presence of FGF21, the expression levels of osteoblastic protein including bone morphogenic protein-2, alkaline phosphatase(ALP), runt-related transcription factor(RUNX)-2 and nuclear factor-kappa B ligand (RANKL) were down-regulated, whereas the expression of osteoprotegerin (OPG) increased...
September 23, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28771710/brain-endothelial-cells-induce-astrocytic-expression-of-the-glutamate-transporter-glt-1-by-a-notch-dependent-mechanism
#17
Meredith L Lee, Zila Martinez-Lozada, Elizabeth N Krizman, Michael B Robinson
Neuron-secreted factors induce astrocytic expression of the glutamate transporter, GLT-1 (EAAT2). In addition to their elaborate anatomic relationships with neurons, astrocytes also have processes that extend to and envelop the vasculature. Although previous studies have demonstrated that brain endothelia contribute to astrocyte differentiation and maturation, the effects of brain endothelia on astrocytic expression of GLT-1 have not been examined. In the present study, we tested the hypothesis that endothelia induce expression of GLT-1 by co-culturing astrocytes from mice that utilize non-coding elements of the GLT-1 gene to control expression reporter proteins with the mouse endothelial cell line, bEND...
August 3, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28768485/a-systematic-review-of-genetic-mutations-in-pulmonary-arterial-hypertension
#18
REVIEW
Gerardo Garcia-Rivas, Carlos Jerjes-Sánchez, David Rodriguez, José Garcia-Pelaez, Victor Trevino
BACKGROUND: Pulmonary arterial hypertension (PAH) is a group of vascular diseases that produce right ventricular dysfunction, heart failure syndrome, and death. Although the majority of patients appear idiopathic, accumulated research work combined with current sequencing technology show that many gene variants could be an important component of the disease. However, current guidelines, clinical practices, and available gene panels focus the diagnosis of PAH on a relatively low number of genes and variants associated with the bone morphogenic proteins and transforming Growth Factor-β pathways, such as the BMPR2, ACVRL1, CAV1, ENG, and SMAD9...
August 2, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28760079/preparation-of-cell-aggregates-incorporating-gelatin-hydrogel-microspheres-containing-bone-morphogenic-protein-2-with-different-degradabilities
#19
Shuhei Tajima, Yasuhiko Tabata
The objective of this study is to evaluate the survival and functions of cells in cell aggregates incorporating gelatin hydrogel microspheres (GM) containing bone morphogenic protein-2 (BMP2). Gelatin was dehydrothermally crosslinked in a water-in-oil emulsion state at 140 °C for various time periods to prepare GM with different degradabilities. BMP2 was dropped onto the GM freeze dried, followed by leaving at 25 °C to obtain GM containing BMP2 (GM-BMP2). MC3T3-E1 cells were cultured with GM-BMP2 and GM in round U-bottom wells of 96-multiwell microplates which had been coated with poly (vinyl alcohol) (PVA), to allow to form cell aggregates containing GM-BMP2 and GM, respectively...
July 31, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28751413/long-term-outcomes-of-dasatinib-induced-pulmonary-arterial-hypertension-a-population-based-study
#20
Jason Weatherald, Marie-Camille Chaumais, Laurent Savale, Xavier Jaïs, Andrei Seferian, Matthieu Canuet, Hélène Bouvaist, Pascal Magro, Anne Bergeron, Christophe Guignabert, Olivier Sitbon, Gérald Simonneau, Marc Humbert, David Montani
This study aimed to describe the long-term outcomes of pulmonary arterial hypertension (PAH) induced by dasatinib.21 incident, right heart catheterisation-confirmed cases of dasatinib-induced PAH were identified from the French Pulmonary Hypertension Registry. Clinical and haemodynamic variables were compared from baseline to last follow-up (median (range) 24 (1-81) months).Median age was 52 years and 15 patients were female (71%). 19 patients received dasatinib for chronic myelogenous leukaemia for a median (range) duration of 42 (8-74) months before PAH diagnosis...
July 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
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