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FGF Receptor

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https://www.readbyqxmd.com/read/29652619/circulating-cytokine-chemokine-concentrations-respond-to-ionizing-radiation-doses-but-not-radiation-dose-rates-granulocyte-colony-stimulating-factor-and-interleukin-18
#1
Juliann G Kiang, Joan T Smith, Sara R Hegge, Natalia I Ossetrova
Exposure to ionizing radiation is a crucial life-threatening factor in nuclear and radiological incidents. It is known that ionizing radiation affects cytokine/chemokine concentrations in the blood of B6D2F1 mice. It is not clear whether radiation dose rates would vary the physiological response. Therefore, in this study we utilized data from two experiments using B6D2F1 female mice exposed to six different dose rates ranging from low to high rates. In one experiment, mice received a total dose of 8 Gy (LD0/30 ) of 60 Co gamma radiation at four dose rates: 0...
April 13, 2018: Radiation Research
https://www.readbyqxmd.com/read/29630097/effect-of-fgf2-on-the-activity-of-sprys-dusp6-erk-signaling-pathway-in-endometrial-glandular-epithelial-cells-of-endometriosis
#2
X-Y Yu, X-T Wang, Y-L Chu, H-M Qu, J Liu, Y-H Zhang, M-J Li
OBJECTIVE: We aimed at exploring the positive feedback loop in eutopic and ectopic endometrial glandular epithelial cells (EuECs and EECs) in endometriosis. MATERIALS AND METHODS: Normal epithelial cells (NECs), EuECs and EECs were treated with fibroblast growth factor (FGF)2, FGF2 neutralizing antibody, mitogen-activated protein kinases (MAPKs) inhibitors U0126 and PD98059. FGF2 protein level was detected by enzyme-linked immunosorbent assay (ELISA). The expressions of FGF2, FGF receptor 1 (FGFR1), extracellular signal-regulated kinase (ERK)1/2/pERK1/2 and Sproutys (SPRYs) (Sprouty1, Sprouty2, Sprouty4) and dual specificity phosphatase 6 (DUSP6) were detected by Western blot...
March 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29595848/multivalent-conjugates-of-basic-fibroblast-growth-factor-enhance-in-vitro-proliferation-and-migration-of-endothelial-cells
#3
Aline Zbinden, Shane Browne, Eda I Altiok, Felicia L Svedlund, Wesley M Jackson, Kevin E Healy
Growth factors hold great promise for regenerative therapies. However, their clinical use has been halted by poor efficacy and rapid clearance from tissue, necessitating the delivery of extremely high doses to achieve clinical effectiveness which has raised safety concerns. Thus, strategies to either enhance growth factor activity at low doses or to increase their residence time within target tissues are necessary for clinical success. In this study, we generated multivalent conjugates (MVCs) of basic fibroblast growth factor (bFGF), a key growth factor involved in angiogenesis and wound healing, to hyaluronic acid (HyA) polymer chains...
March 29, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29581856/fibroblast-growth-factor-receptor-signaling-plays-a-key-role-in-transformation-induced-by-the-tmprss2-erg-fusion-gene-and-decreased-pten
#4
Longjiang Shao, Jianghua Wang, Omer Faruk Karatas, Shu Feng, Yiqun Zhang, Chad J Creighton, Michael Ittmann
Prostate cancer is the most common visceral malignancy and the second leading cause of cancer deaths in US men. Correlative studies in human prostate cancers reveal a frequent association of the TMPRSS2/ERG (TE) fusion gene with loss of PTEN and studies in mouse models reveal that ERG expression and PTEN loss synergistically promote prostate cancer progression. To determine the mechanism by which ERG overexpression and PTEN loss leads to transformation, we overexpressed the TE fusion gene and knocked down PTEN in an immortalized but non-transformed prostate epithelial cell line...
March 6, 2018: Oncotarget
https://www.readbyqxmd.com/read/29562183/the-lis1-nde1-complex-is-essential-for-fgf-signaling-by-regulating-fgf-receptor-intracellular-trafficking
#5
Liansheng Liu, Jinqiu Lu, Xiaoling Li, Ailing Wu, Qingzhe Wu, Mujun Zhao, Nan Tang, Hai Song
Intracellular transport of membranous organelles and protein complexes to various destinations is fundamental to signaling transduction and cellular function. The cytoplasmic dynein motor and its regulatory proteins LIS1 and NDE1 are required for transporting a variety of cellular cargos along the microtubule network. In this study, we show that deletion of Lis1 in developing lung endoderm and limb mesenchymal cells causes agenesis of the lungs and limbs. In both mutants, there is increased cell death and decreased fibroblast growth factor (FGF) signaling activity...
March 20, 2018: Cell Reports
https://www.readbyqxmd.com/read/29558905/novel-biomarker-based-model-for-the-prediction-of-sorafenib-response-and-overall-survival-in-advanced-hepatocellular-carcinoma-a-prospective-cohort-study
#6
Hwi Young Kim, Dong Hyeon Lee, Jeong-Hoon Lee, Young Youn Cho, Eun Ju Cho, Su Jong Yu, Yoon Jun Kim, Jung-Hwan Yoon
BACKGROUND: Prediction of the outcome of sorafenib therapy using biomarkers is an unmet clinical need in patients with advanced hepatocellular carcinoma (HCC). The aim was to develop and validate a biomarker-based model for predicting sorafenib response and overall survival (OS). METHODS: This prospective cohort study included 124 consecutive HCC patients (44 with disease control, 80 with progression) with Child-Pugh class A liver function, who received sorafenib...
March 20, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29556563/effect-of-extension-of-the-heparin-binding-pocket-on-the-structure-stability-and-cell-proliferation-activity-of-the-human-acidic-fibroblast-growth-factor
#7
Julie Eberle Davis, Ravi Kumar Gundampati, Srinivas Jayanthi, Joshua Anderson, Abigail Pickhardt, Bhanu Prasanth Koppolu, David A Zaharoff, Thallapuranam Krishnaswamy Suresh Kumar
Acidic human fibroblast growth factor (hFGF1) plays a key role in cell growth and proliferation. Activation of the cell surface FGF receptor is believed to involve the glycosaminoglycan, heparin. However, the exact role of heparin is a subject of considerable debate. In this context, in this study, the correlation between heparin binding affinity and cell proliferation activity of hFGF1 is examined by extending the heparin binding pocket through selective engineering via charge reversal mutations (D82R, D84R and D82R/D84R)...
March 2018: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/29545872/high-calcium-diet-alleviates-5-6-nephrectomy-induced-bone-deteriorations-of-lumbar-vertebrae-in-mice
#8
Hai-Tao Hou, Ya-Nan Wang, Shi-Ze Shao, Song Fu, Xiang-Peng Huang, Xiao-Hui Wang
Dietary calcium (Ca) supplementation has beneficial effects on bone health. However, it is not clear whether a high calcium diet (HCD) following 5/6 nephrectomy (5/6 Nx) is beneficial to bone health. The aim of the present study was to examine the effects of an HCD on bone metabolism using a chronic kidney disease (CKD) mouse model. Male C57BL/6J mice were divided into three groups: Sham group, 5/6 Nx group and 5/6 Nx + HCD group. Mice were sacrificed 12 weeks post-surgery. Calcium (Ca) and creatinine (Cr) were measured using standard colorimetric methods and picric acid methods, respectively...
April 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29542081/reporter-analyses-reveal-redundant-enhancers-that-confer-robustness-on-cis-regulatory-mechanisms
#9
Shigeki Fujiwara, Cristian Cañestro
Reporter analyses of Hox1 and Brachyury (Bra) genes have revealed examples of redundant enhancers that provide regulatory robustness. Retinoic acid (RA) activates through an RA-response element the transcription of Hox1 in the nerve cord of the ascidian Ciona intestinalis. We also found a weak RA-independent neural enhancer within the second intron of Hox1. The Hox1 gene in the larvacean Oikopleura dioica is also expressed in the nerve cord. The O. dioica genome, however, does not contain the RA receptor-encoding gene, and the expression of Hox1 has become independent of RA...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29540697/kaempferol-targeting-on-the-fibroblast-growth-factor-receptor-3-ribosomal-s6-kinase-2-signaling-axis-prevents-the-development-of-rheumatoid-arthritis
#10
Cheol-Jung Lee, Su-Jin Moon, Jeong-Hee Jeong, Sangbae Lee, Mee-Hyun Lee, Sun-Mi Yoo, Hye Suk Lee, Han Chang Kang, Joo Young Lee, Weon Sun Lee, Hee-Jin Lee, Eun-Kyung Kim, Joo-Yeon Jhun, Mi-La Cho, Jun-Ki Min, Yong-Yeon Cho
Rheumatoid arthritis (RA) is a systemic inflammatory disease that mainly affects the synovial joints. Although involvement of the fibroblast growth factor (FGF) signaling pathway has been suggested as an important modulator in RA development, no clear evidence has been provided. In this study, we found that synovial fluid basic FGF (bFGF) concentration was significantly higher in RA than in osteoarthritis (OA) patients. bFGF stimulates proliferation and migration of human fibroblast-like synoviocytes (FLSs) by activation of the bFGF-FGF receptor 3 (FGFR3)-ribosomal S6 kinase 2 (RSK2) signaling axis...
March 14, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29540614/obesity-promotes-resistance-to-anti-vegf-therapy-in-breast-cancer-by-up-regulating-il-6-and-potentially-fgf-2
#11
Joao Incio, Jennifer A Ligibel, Daniel T McManus, Priya Suboj, Keehoon Jung, Kosuke Kawaguchi, Matthias Pinter, Suboj Babykutty, Shan M Chin, Trupti D Vardam, Yuhui Huang, Nuh N Rahbari, Sylvie Roberge, Dannie Wang, Igor L Gomes-Santos, Stefan B Puchner, Christopher L Schlett, Udo Hoffmman, Marek Ancukiewicz, Sara M Tolaney, Ian E Krop, Dan G Duda, Yves Boucher, Dai Fukumura, Rakesh K Jain
Anti-vascular endothelial growth factor (VEGF) therapy has failed to improve survival in patients with breast cancer (BC). Potential mechanisms of resistance to anti-VEGF therapy include the up-regulation of alternative angiogenic and proinflammatory factors. Obesity is associated with hypoxic adipose tissues, including those in the breast, resulting in increased production of some of the aforementioned factors. Hence, we hypothesized that obesity could contribute to anti-VEGF therapy's lack of efficacy. We found that BC patients with obesity harbored increased systemic concentrations of interleukin-6 (IL-6) and/or fibroblast growth factor 2 (FGF-2), and their tumor vasculature was less sensitive to anti-VEGF treatment...
March 14, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29540482/pharmacologically-targeting-the-myristoylation-of-the-scaffold-protein-frs2%C3%AE-inhibits-fgf-fgfr-mediated-oncogenic-signaling-and-tumor-progression
#12
Qianjin Li, Omar Awad Alsaidan, Yongjie Ma, Sungjin Kim, Junchen Liu, Thomas Albers, Kebin Liu, Zanna Beharry, Shaying Zhao, Fen Wang, Iryna Lebedyeva, Houjian Cai
Fibroblast growth factor (FGF)/FGF receptor (FGFR) signaling facilitates tumor initiation and progression. Although currently approved inhibitors of FGFR kinase have shown therapeutic benefit in clinical trials, over-expression or mutations of FGFRs eventually confer drug resistance and thereby abrogate the desired activity of kinase inhibitors in many cancer types. In this study, we report that loss of myristoylation of fibroblast growth factor receptor substrate 2 (FRS2α), a scaffold protein essential for FGFR signaling, inhibits FGF/FGFR-mediated oncogenic signaling and FGF10-induced tumorigenesis...
March 14, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29526646/inactivation-of-fgfr2-gene-in-mouse-secondary-palate-mesenchymal-cells-leads-to-cleft-palate
#13
Jiu-Zhen Jin, Zhenmin Lei, Zi-Jian Lan, Partha Mukhopadhyay, Jixiang Ding
Numerous studies have been conducted to understand the molecular mechanisms controlling mammalian secondary palate development such as growth, reorientation and fusion. However, little is known about the signaling factors regulating palate initiation. Mouse fibroblast growth factor (FGF) receptor 2 gene (Fgfr2) is expressed on E11.5 in the palate outgrowth within the maxillary process, in a region that is responsible for palate cell specification and shelf initiation. Fgfr2 continues to express in palate on E12...
March 8, 2018: Reproductive Toxicology
https://www.readbyqxmd.com/read/29524581/de-novo-assembly-gene-annotation-and-marker-development-using-illumina-paired-end-transcriptome-sequencing-in-the-crassadoma-gigantea
#14
Shanmao Cao, Lijie Zhu, Hongtao Nie, Minghao Yin, Gang Liu, Xiwu Yan
Crassadoma gigantea is an important commercial marine bivalve species in Baja California and Mexico. In this study, we have applied RNA-Seq technology to profile the transcriptome of the C. gigantea for the first time. A total of 80,832,518 raw reads were produced from a Illumina HiSeq4000 platform, and 77,306,198 (95.64%) clean reads were generated after trimming the adaptor sequences. The transcriptome assembled into 158,855 transcripts with an N50 size of 1995 bp and an average size of 1008 bp. A number of DNA repair related genes, such as MSH3, EGF, TGF, IGF, FGF, encoding different groups of growth factors were found in the transcriptome data of C...
March 7, 2018: Gene
https://www.readbyqxmd.com/read/29519242/fgf-signaling-controls-shh-dependent-oligodendroglial-fate-specification-in-the-ventral-spinal-cord
#15
Marie-Amélie Farreny, Eric Agius, Sophie Bel-Vialar, Nathalie Escalas, Nagham Khouri-Farah, Chadi Soukkarieh, Cathy Danesin, Fabienne Pituello, Philippe Cochard, Cathy Soula
BACKGROUND: Most oligodendrocytes of the spinal cord originate from ventral progenitor cells of the pMN domain, characterized by expression of the transcription factor Olig2. A minority of oligodendrocytes is also recognized to emerge from dorsal progenitors during fetal development. The prevailing view is that generation of ventral oligodendrocytes depends on Sonic hedgehog (Shh) while dorsal oligodendrocytes develop under the influence of Fibroblast Growth Factors (FGFs). RESULTS: Using the well-established model of the chicken embryo, we show that ventral spinal progenitor cells activate FGF signaling at the onset of oligodendrocyte precursor cell (OPC) generation...
March 8, 2018: Neural Development
https://www.readbyqxmd.com/read/29518087/fibroblast-growth-factor-23-is-upregulated-in-the-kidney-in-a-chronic-kidney-disease-rat-model
#16
Hidekazu Sugiura, Ai Matsushita, Mayuko Futaya, Atsuko Teraoka, Ken-Ichi Akiyama, Noriyoshi Usui, Nobuo Nagano, Kosaku Nitta, Ken Tsuchiya
The hormone fibroblast growth factor 23 (FGF23) is secreted from bone and is involved in phosphorus (P) metabolism. FGF23 mainly binds the FGF receptor, which interacts with αKlotho in the kidney or parathyroid and regulates Na-dependent phosphate co-transporter type IIa (NaPi-IIa) and type IIc (NaPi-IIc) expression, 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) activity, and parathyroid hormone (PTH) secretion. In this study, we utilized hemi-nephrectomized rats fed a high-P diet (HP Nx), rats subjected to a partial nephrectomy (PN) and rats with doxorubicin-induced renal failure (DXR) as chronic kidney disease (CKD) animal models and analyzed the P metabolism and FGF23 expression in the kidneys in each CKD model...
2018: PloS One
https://www.readbyqxmd.com/read/29514104/large-scale-phosphoproteomics-reveals-shp-2-phosphatase-dependent-regulators-of-pdgf-receptor-signaling
#17
Tanveer S Batth, Moreno Papetti, Anamarija Pfeiffer, Maxim A X Tollenaere, Chiara Francavilla, Jesper V Olsen
Despite its low cellular abundance, phosphotyrosine (pTyr) regulates numerous cell signaling pathways in health and disease. We applied comprehensive phosphoproteomics to unravel differential regulators of receptor tyrosine kinase (RTK)-initiated signaling networks upon activation by Pdgf-ββ, Fgf-2, or Igf-1 and identified more than 40,000 phosphorylation sites, including many phosphotyrosine sites without additional enrichment. The analysis revealed RTK-specific regulation of hundreds of pTyr sites on key signaling molecules...
March 6, 2018: Cell Reports
https://www.readbyqxmd.com/read/29502359/fgf23-neutralizing-antibody-partially-improves-bone-mineralization-defect-of-hmwfgf2-isoforms-transgenic-female-mice
#18
Liping Xiao, Collin Homer-Bouthiette, Marja M Hurley
Mice overexpressing high molecular weight FGF2 isoforms (HMWTg) in osteoblast lineage phenocopy human X-linked hypophosphatemic rickets (XLH) and Hyp murine model of XLH demonstrating increased FGF23/FGF receptor signaling and hypophosphatemic rickets/osteomalacia. Since HMWFGF2 was up-regulated in bones of Hyp mice and abnormal FGF23 signaling is important in XLH, HMWTg mice were used to examine the effect of the FGF23 neutralizing antibody (FGF23Ab). Eight-week-old female Vector control mice and HMWTg mice were treated with FGF23Ab or control IgG...
March 4, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29501879/negative-regulation-of-lens-fiber-cell-differentiation-by-rtk-antagonists-spry-and-spred
#19
Guannan Zhao, Charles G Bailey, Yue Feng, John Rasko, Frank J Lovicu
Sprouty (Spry) and Spred proteins have been identified as closely related negative regulators of the receptor tyrosine kinase (RTK)-mediated MAPK pathway, inhibiting cellular proliferation, migration and differentiation in many systems. As the different members of this antagonist family are strongly expressed in the lens epithelium in overlapping patterns, in this study we used lens epithelial explants to examine the impact of these different antagonists on the morphologic and molecular changes associated with fibroblast growth factor (FGF)-induced lens fiber differentiation...
March 1, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29496444/adrenergic-receptor-mediated-activation-of-fgf-21-adiponectin-axis-exerts-atheroprotective-effects-in-brown-adipose-tissue-transplanted-apoe-mice
#20
Masakazu Kikai, Hiroyuki Yamada, Noriyuki Wakana, Kensuke Terada, Keita Yamamoto, Naotoshi Wada, Shinichiro Motoyama, Makoto Saburi, Takeshi Sugimoto, Daisuke Irie, Taku Kato, Hiroyuki Kawahito, Takehiro Ogata, Satoaki Matoba
Brown adipose tissue (BAT) has been found as an endocrine organ that maintains metabolic homeostasis; however, the effects on atherosclerosis remain undefined. Here, we investigated the effect of experimental BAT transplantation on atherosclerosis. Interscapular BAT was dissected from wild-type mice and transplanted into the visceral cavity of 12-week-old apoE-/- mice. Oil-red O staining of whole aortas after 3 months of a high-cholesterol diet showed a significant decrease in atherosclerotic lesion area in BAT-transplanted mice by 32% compared with the sham control mice...
February 26, 2018: Biochemical and Biophysical Research Communications
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