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https://www.readbyqxmd.com/read/28629737/the-obligatory-role-of-activin-a-in-the-formation-of-heterotopic-bone-in-fibrodysplasia-ossificans-progressiva
#1
Dana M Alessi Wolken, Vincent Idone, Sarah J Hatsell, Paul B Yu, Aris N Economides
Fibrodysplasia Ossificans Progressiva (FOP) is a rare genetic disorder that presents at birth with only minor patterning defects, but manifests its debilitating pathology early in life with episodic, yet progressive and cumulative, heterotopic ossification (HO) of ligaments, tendons, and a subset of major skeletal muscles. The resulting HO lesions are endochondral in nature, and appear to be linked to inflammatory stimuli arising in association with known injuries, or from inflammation linked to normal tissue repair...
June 16, 2017: Bone
https://www.readbyqxmd.com/read/28627680/bmp%C3%A2-7-suppresses-excessive-scar-formation-by-activating-the-bmp%C3%A2-7-smad1-5-8-signaling-pathway
#2
Jingdong Guo, Quan Lin, Ying Shao, Li Rong, Duo Zhang
Scarring is the inevitable consequence of wound repair, which may cause significant physical and mental pain to patients when excessive. Bone morphogenetic protein‑7 (BMP‑7) has been proved to inhibit TGF‑β‑induced fibrosis in various tissues including dermal papilla cells. However, the effect of BMP‑7 on hypertrophic scarring, a common proliferative disorder of dermal fibroblasts, has not been determined. To overcome this problem, the present study established a mouse model of thermal injury to investigate the inhibitory effects of BMP‑7 on scar formation...
June 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28627438/genome-wide-identification-phylogeny-and-expression-of-bone-morphogenetic-protein-genes-in-tetraploidized-common-carp-cyprinus-carpio
#3
Lin Chen, Chuanju Dong, Shengnan Kong, Jiangfan Zhang, Xuejun Li, Peng Xu
Bone morphogenetic proteins (Bmps) are a group of signaling molecules known to play important roles during formation and maintenance of various organs, not only bone, but also muscle, blood and so on. Common carp (Cyprinus carpio) is one of the most intensively studied fish due to its economic and environmental importance. Besides, common carp had encountered an additional round of whole genome duplication (WGD) compared with many closely related diploid teleost, which make it one of the most important models for genome evolutionary studies in teleost...
June 13, 2017: Gene
https://www.readbyqxmd.com/read/28627372/regulatory-role-of-melatonin-and-bmp-4-in-prolactin-production-by-rat-pituitary-lactotrope-gh3-cells
#4
Kanako Ogura-Ochi, Satoshi Fujisawa, Nahoko Iwata, Motoshi Komatsubara, Yuki Nishiyama, Naoko Tsukamoto-Yamauchi, Kenichi Inagaki, Jun Wada, Fumio Otsuka
The effects of melatonin on prolactin production and its regulatory mechanism remain uncertain. We investigated the regulatory role of melatonin in prolactin production using rat pituitary lactotrope GH3 cells by focusing on the bone morphogenetic protein (BMP) system. Melatonin receptor activation, induced by melatonin and its receptor agonist ramelteon, significantly suppressed basal and forskolin-induced prolactin secretion and prolactin mRNA expression in GH3 cells. The melatonin MT2 receptor was predominantly expressed in GH3 cells, and the inhibitory effects of melatonin on prolactin production were reversed by treatment with the receptor antagonist luzindole, suggesting functional involvement of MT2 action in the suppression of prolactin release...
June 13, 2017: Peptides
https://www.readbyqxmd.com/read/28621426/foxd1-protein-interacts-with-wnt-and-bmp-signaling-to-differentially-pattern-mesoderm-and-neural-tissue
#5
Hanna Polevoy, Anastasia Malyarova, Yuri Fonar, Sara Elias, Dale Frank
The foxd1 gene (previously known as Brain Factor 2/BF2) is expressed during early Xenopus laevis development. At gastrula stages, foxd1 is expressed in dorsal mesoderm regions fated for muscle and notochord, while at neurula stages, foxd1 is expressed in the forebrain region. Previous studies in the neural plate showed that FoxD1 protein acts as transcriptional repressor downstream of BMP antagonism, neuralizing the embryo to control anterior neural cell fates. FoxD1 mesoderm function was not rigorously analyzed, but ectopic FoxD1 levels increased muscle marker expression in embryos...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28619819/yorkie-and-hedgehog-independently-restrict-bmp-production-in-escort-cells-to-permit-germline-differentiation-in-the-drosophila-ovary
#6
Jianhua Huang, Amy Reilein, Daniel Kalderon
Multiple signaling pathways guide the behavior and differentiation of both germline stem cells (GSCs) and somatic stem cells (FSCs) in the Drosophila germarium, necessitating careful control of signal generation, range and responses. Signal integration involves Escort Cells (ECs), which promote differentiation of the GSC derivatives they envelop, provide niche signals for FSCs and derive directly from FSCs in adults. Hedgehog (Hh) signaling induces the Hippo pathway effector Yorkie (Yki) to promote proliferation and maintenance of FSCs but Hh also signals to ECs, which are quiescent...
June 15, 2017: Development
https://www.readbyqxmd.com/read/28611293/identification-of-molecular-biomarkers-for-pancreatic-cancer-with-mrmr-shortest-path-method
#7
Shuhua Shen, Tuantuan Gui, Chengcheng Ma
The high mortality rate of pancreatic cancer makes it one of the most studied diseases among all cancer types. Many researches have been conducted to understand the mechanism underlying its emergence and pathogenesis of this disease. Here, by using minimum-redundancy-maximum-relevance (mRMR) method, we studied a set of transcriptome data of pancreatic cancer. As we gradually added features to achieve the most accurate classification results of Jackknife, a gene set of 9 genes was identified. They were NHS, SCML2, LAMC2, S100P, COL17A1, AMIGO2, PTPRR, KPNA7 and KCNN4...
May 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28611046/autocrine-bmp-4-signaling-is-a-therapeutic-target-in-colorectal-cancer
#8
Yuichiro Yokoyama, Toshiaki Watanabe, Yusuke Tamura, Yoshinobu Hashizume, Kohei Miyazono, Shogo Ehata
Poor prognoses for colorectal cancer (CRC) patients with metastatic lesions have driven demand for the development of novel targeted therapies. Here we demonstrate that expression of bone morphogenetic protein 4 (BMP-4) is universally upregulated in human CRC cells and tissues, resulting in activated BMP signaling. Inhibition of endogenous BMP signaling by the BMP type I receptor inhibitor LDN-193189 elevated expression of the phosphatase DUSP5 in CRC cells, inducing apoptosis via dephosphorylation of Erk MAPK...
June 13, 2017: Cancer Research
https://www.readbyqxmd.com/read/28608614/solanum-muricatum-promotes-osteogenic-differentiation-of-rat-bone-marrow-stromal-cells
#9
Nan Wang, Feng Wang, Youshui Gao, Zubin Zhou, Wei Liu, Chenhao Pan, Peipei Yin, Mingjie Tang, Xiaowei Yu
Solanum muricatum (SM), also known as pepino, is known for its antioxidative and anti-inflammatory effects. The aim of this study was to evaluate the effects of SM extract in promoting osteogenic differentiation and regulating the Wnt and bone morphogenetic protein (BMP) signaling pathways. Ingredients of pepino were extracted and identified. SM extracts were used to treat rat bone marrow stromal cells (BMSCs), followed by evaluating alkaline phosphatase activities and mineralization levels. The mRNA levels of osteogenic biomarkers, including OPN and Collagen I, were also evaluated with real-time polymerase chain reaction...
June 13, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28607813/differential-involvement-of-wnt-signaling-in-bmp-regulation-of-cancellous-versus-periosteal-bone-growth
#10
Guangxu He, Yu Shi, Joohyun Lim, Teresita Bellido, Jiangdong Ni, Fanxin Long
Bone morphogenetic proteins (Bmp) are well-known to induce bone formation following chondrogenesis, but the direct role of Bmp signaling in the osteoblast lineage is not completely understood. We have recently shown that deletion of the receptor Bmpr1a in the osteoblast lineage with Dmp1-Cre reduces osteoblast activity in general but stimulates proliferation of preosteoblasts specifically in the cancellous bone region, resulting in diminished periosteal bone growth juxtaposed with excessive cancellous bone formation...
2017: Bone Research
https://www.readbyqxmd.com/read/28607482/principles-of-early-human-development-and-germ-cell-program-from-conserved-model-systems
#11
Toshihiro Kobayashi, Haixin Zhang, Walfred W C Tang, Naoko Irie, Sarah Withey, Doris Klisch, Anastasiya Sybirna, Sabine Dietmann, David A Contreras, Robert Webb, Cinzia Allegrucci, Ramiro Alberio, M Azim Surani
Human primordial germ cells (hPGCs), the precursors of sperm and eggs, originate during weeks 2-3 of early post-implantation development. Using in vitro models of hPGC induction, recent studies have suggested that there are marked mechanistic differences in the specification of human and mouse PGCs. This may be due in part to the divergence in their pluripotency networks and early post-implantation development. As early human embryos are not accessible for direct study, we considered alternatives including porcine embryos that, as in humans, develop as bilaminar embryonic discs...
June 15, 2017: Nature
https://www.readbyqxmd.com/read/28607086/specific-targeting-of-tgf-%C3%AE-family-ligands-demonstrates-distinct-roles-in-the-regulation-of-muscle-mass-in-health-and-disease
#12
Justin L Chen, Kelly L Walton, Adam Hagg, Timothy D Colgan, Katharine Johnson, Hongwei Qian, Paul Gregorevic, Craig A Harrison
The transforming growth factor-β (TGF-β) network of ligands and intracellular signaling proteins is a subject of intense interest within the field of skeletal muscle biology. To define the relative contribution of endogenous TGF-β proteins to the negative regulation of muscle mass via their activation of the Smad2/3 signaling axis, we used local injection of adeno-associated viral vectors (AAVs) encoding ligand-specific antagonists into the tibialis anterior (TA) muscles of C57BL/6 mice. Eight weeks after AAV injection, inhibition of activin A and activin B signaling produced moderate (∼20%), but significant, increases in TA mass, indicating that endogenous activins repress muscle growth...
June 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28603898/getting-to-the-root-of-scales-feather-and-hair-as-deep-as-odontodes
#13
Danielle Dhouailly, Pascal Godefroit, Thomas Martin, Stefan Nonchev, Flavien Caraguel, Olav Oftedal
While every jawed vertebrate, or its recent ancestor, possesses teeth, skin appendages are characteristic of the living clades: skin denticles (odontodes) in chondrichthyians, dermal scales in teleosts, ducted multicellular glands in amphibians, epidermal scales in squamates, feathers in birds, and hair-gland complexes in mammals, all of them showing a dense periodic patterning. While the odontode origin of teleost scales is generally accepted, the origin of both feather and hair is still debated. They appear long before mammals and birds, at least in Jurassic in mammaliaforms and in ornithodires (pterosaurs and dinosaurs), and are contemporary to scales of early squamates...
June 11, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28602823/structural-basis-for-specific-interaction-of-tgf%C3%AE-signaling-regulators-sara-endofin-with-hd-ptp
#14
Deepankar Gahloth, Colin Levy, Louise Walker, Lydia Wunderley, A Paul Mould, Sandra Taylor, Philip Woodman, Lydia Tabernero
SARA and endofin are endosomal adaptor proteins that drive Smad phosphorylation by ligand-activated transforming growth factor β/bone morphogenetic protein (TGFβ/BMP) receptors. We show in this study that SARA and endofin also recruit the tumor supressor HD-PTP, a master regulator of endosomal sorting and ESCRT-dependent receptor downregulation. High-affinity interactions occur between the SARA/endofin N termini, and the conserved hydrophobic region in the HD-PTP Bro1 domain that binds CHMP4/ESCRT-III. CHMP4 engagement is a universal feature of Bro1 proteins, but SARA/endofin binding is specific to HD-PTP...
May 30, 2017: Structure
https://www.readbyqxmd.com/read/28600394/tgf-%C3%AE-family-signaling-in-early-vertebrate-development
#15
Joseph Zinski, Benjamin Tajer, Mary C Mullins
TGF-β family ligands function in inducing and patterning many tissues of the early vertebrate embryonic body plan. Nodal signaling is essential for the specification of mesendodermal tissues and the concurrent cellular movements of gastrulation. Bone morphogenetic protein (BMP) signaling patterns tissues along the dorsal-ventral axis and simultaneously directs the cell movements of convergence and extension. After gastrulation, a second wave of Nodal signaling breaks the symmetry between the left and right sides of the embryo...
June 9, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28599080/bmp-signaling-governs-biliary-driven-liver-regeneration-in-zebrafish-via-tbx2b-and-id2a
#16
Tae-Young Choi, Mehwish Khaliq, Shinya Tsurusaki, Nikolay Ninov, Didier Y R Stainier, Minoru Tanaka, Donghun Shin
Upon mild liver injury, new hepatocytes originate from pre-existing hepatocytes. However, if hepatocyte proliferation is impaired, a manifestation of severe liver injury, biliary epithelial cells (BECs) contribute to new hepatocytes through BEC dedifferentiation into liver progenitor cells (LPCs), also termed oval cells or hepatoblast-like cells (HB-LCs), and subsequent differentiation into hepatocytes. Despite the identification of several factors regulating BEC dedifferentiation and activation, little is known about factors involved in the regulation of LPC differentiation into hepatocytes during liver regeneration...
June 9, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28598558/conserved-signaling-mechanisms-in-drosophila-heart-development
#17
REVIEW
Shaad M Ahmad
Signal transduction through multiple distinct pathways regulates and orchestrates the numerous biological processes comprising heart development. This review outlines the roles of the FGFR, EGFR, Wnt, BMP, Notch, Hedgehog, Slit/Robo and other signaling pathways during four sequential phases of Drosophila cardiogenesis-mesoderm migration, cardiac mesoderm establishment, differentiation of the cardiac mesoderm into distinct cardiac cell types, and morphogenesis of the heart and its lumen based on the proper positioning and cell shape changes of these differentiated cardiac cells-and illustrates how these same cardiogenic roles are conserved in vertebrates...
June 9, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28598258/the-epidemiology-of-supernumerary-teeth-and-the-associated-molecular-mechanism
#18
Xi Lu, Fang Yu, Junjun Liu, Wenping Cai, Yumei Zhao, Shouliang Zhao, Shangfeng Liu
Supernumerary teeth are common clinical dental anomalies. Although various studies have provided abundant information regarding genes and signalling pathways involved in tooth morphogenesis, which include Wnt, FGF, BMP, and Shh, the molecular mechanism of tooth formation, especially for supernumerary teeth, is still unclear. In the population, some cases of supernumerary teeth are sporadic, while others are syndrome-related with familial hereditary. The prompt and accurate diagnosis of syndrome related supernumerary teeth is quite important for some distinctive disorders...
June 9, 2017: Organogenesis
https://www.readbyqxmd.com/read/28589900/mir-26a-contributes-to-the-pdgf-bb-induced-phenotypic-switch-of-vascular-smooth-muscle-cells-by-suppressing-smad1
#19
Xiaoyan Yang, Mei Dong, Hao Wen, Xiaoling Liu, Meng Zhang, Lianyue Ma, Cheng Zhang, Xiaorong Luan, Huixia Lu, Yun Zhang
The phenotypic switch of vascular smooth muscle cells (VSMCs) is a key event in the pathogenesis of various vascular diseases, such as atherosclerosis and post-angioplasty restenosis. Small non-coding microRNAs (miRNAs) have emerged as critical modulators of VSMC function. In the present study, miR-26a was significantly increased in cultured VSMCs stimulated by platelet-derived growth factor-BB (PDGF-BB) and in arteries with neointimal lesion formation. Moreover, we demonstrated that miR-26a regulates the expression of VSMC differentiation marker genes such as α-smooth muscle actin (α-SMA), calponin and smooth muscle myosin heavy chain (SM-MHC) in PDGF-BB-treated VSMCs...
May 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28588028/the-lysine-methyltransferase-smyd2-methylates-the-kinase-domain-of-type-ii-receptor-bmpr2-and-stimulates-bone-morphogenetic-protein-signaling
#20
Shuman Gao, Zhiqiang Wang, Wencai Wang, Xueli Hu, Peilin Chen, Jiwen Li, Xin Hua Feng, Jiemin Wong, James X Du
Lysine methylation of chromosomal and nuclear proteins is a well-known mechanism of epigenetic regulation, but relatively little is known about the role of this protein modification in signal transduction. Using an RNAi-based functional screening of the SMYD family of lysine methyltransferases (KMTs), we identified SMYD2 as a KMT essential for robust bone morphogenic protein (BMP)- but not TGFβ-induced target gene expression in HaCaT keratinocyte cells. A role for SMYD2 in BMP-induced gene expression was confirmed by shRNA knockdown and CRISPR/Cas9-mediated knockout of SMYD2...
June 6, 2017: Journal of Biological Chemistry
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