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https://www.readbyqxmd.com/read/29666124/generation-of-a-double-binary-transgenic-zebrafish-model-to-study-myeloid-gene-regulation-in-response-to-oncogene-activation-in-melanocytes
#1
Amy Kenyon, Daria Gavriouchkina, Jernej Zorman, Vanessa Chong-Morrison, Giorgio Napolitani, Vincenzo Cerundolo, Tatjana Sauka-Spengler
A complex network of inflammatory genes is closely linked to somatic cell transformation and malignant disease. Immune cells and their associated molecules are responsible for detecting and eliminating cancer cells as they establish themselves as the precursors of a tumour. By the time a patient has a detectable solid tumour, cancer cells have escaped the initial immune response mechanisms. Here, we describe the development of a double binary zebrafish model that enables regulatory programming of the myeloid cells as they respond to oncogene-activated melanocytes to be explored, focussing on the initial phase when cells become the precursors of cancer...
April 6, 2018: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/29594234/strong-radioprotective-fgf1-signaling-down-regulates-proliferative-and-metastatic-capabilities-of-the-angiosarcoma-cell-line-isos-1-through-the-dual-inhibition-of-egfr-and-vegfr-pathways
#2
Taichi Miura, Mayumi Fujita, Mitsuko Kawano, Kaori Imadome, Takeshi Yasuda, Shoko Nishihara, Toru Imamura, Mikio Masuzawa, Takashi Imai, Fumiaki Nakayama
Background and purpose: Angiosarcoma is associated with a poor prognosis and is treated with radiotherapy. Although FGF1 is a potential radioprotector, the influence of FGF1 on the malignancy of angiosarcoma remains unknown. Materials and methods: Highly stable FGF1 mutants, which exhibit stronger mitogenic activity than wild-type FGF1, were examined as strong radioprotectors and signaling agonists to clarify the effects of FGF1 on the murine angiosarcoma cell line ISOS-1...
December 2017: Clinical and Translational Radiation Oncology
https://www.readbyqxmd.com/read/29559295/oligodendrocyte-progenitor-cells-and-macrophages-microglia-produce-glioma-stem-cell-niches-at-the-tumor-border
#3
Takuichiro Hide, Yoshihiro Komohara, Yuko Miyasato, Hideo Nakamura, Keishi Makino, Motohiro Takeya, Jun-Ichi Kuratsu, Akitake Mukasa, Shigetoshi Yano
Glioblastoma (GBM) usually develops in adult brain white matter. Even after complete resection, GBM recurs around the tumor removal cavity, where GBM cells acquire chemo-radioresistance. Characterization of the tumor border microenvironment is critical for improving prognosis in patients with GBM. Here, we compared microRNA (miRNA) expression in samples from the tumor, tumor border, and periphery by miRNA microarray. The top three of miRNAs showing higher expression in the tumor border were related to oligodendrocyte differentiation, and pathologically oligodendrocyte lineage cells were increased in the border, where macrophages and microglia also colocalized...
March 1, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29514106/phosphaturic-mesenchymal-tumor-without-osteomalacia-additional-confirmation-of-the-non-phosphaturic-variant-with-emphasis-on-the-roles-of-fgf23-chromogenic-in-situ-hybridization-and-fn1-fgfr1-fluorescence-in-situ-hybridization
#4
Kimberley N Sent-Doux, Craig Mackinnon, Jen-Chieh Lee, Andrew L Folpe, Omar Habeeb
Phosphaturic Mesenchymal Tumor (PMT) is a rare, histologically distinctive neoplasm, which classically presents with phosphaturia and tumor-induced osteomalacia (TIO) (i.e., oncogenic osteomalacia). Both the phosphaturia and TIO are due to paraneoplastic production of FGF23 (a phosphatonin) by the neoplastic cells, which are genetically characterized by rearrangements of FN1 (most often with FGFR1 - and less frequently with FGF1). However, rare cases of PMT present without phosphaturia and TIO (i.e., the "non-phosphaturic" variant) - and are therefore much more challenging to diagnose...
March 4, 2018: Human Pathology
https://www.readbyqxmd.com/read/29514045/integrated-data-analysis-identifies-potential-inducers-and-pathways-during-the-endothelial-differentiation-of-bone-marrow-stromal-cells-by-dna-methyltransferase-inhibitor-5-aza-2-deoxycytidine
#5
Rui Xu, Wenbin Chen, Zhifen Zhang, Yang Qiu, Yong Wang, Bingchang Zhang, Wei Lu
Bone-Marrow Stromal Cells (BMSCs)-derived vascular endothelial cells (VECs) is regarded as an important therapeutic strategy for spinal cord injury, disc degeneration, cerebral ischemic disease and diabetes. The change in DNA methylation level is essential for stem cell differentiation. However, the DNA methylation related mechanisms underlying the endothelial differentiation of BMSCs are not well understood. In this study, DNA methyltransferase inhibitor, 5-aza-2'-deoxycytidine (5-aza-dC) significantly elevated the endothelial markers expression (CD31/PECAM1, CD105/ENG, eNOS and VE-cadherin), as well as promoted the capacity of angiogenesis on Matrigel...
March 4, 2018: Gene
https://www.readbyqxmd.com/read/29512938/fgf1-improves-functional-recovery-through-inducing-prdx1-to-regulate-autophagy-and-anti-ros-after-spinal-cord-injury
#6
Jiawei Li, Qingqing Wang, Hanxiao Cai, Zili He, Haoli Wang, Jian Chen, Zengming Zheng, Jiayu Yin, Zhiyong Liao, Huazi Xu, Jian Xiao, Fanghua Gong
Fibroblast growth factor 1 (FGF1) is thought to exert protective and regenerative effects on neurons following spinal cord injury (SCI), although the mechanism of these effects is not well understood. The use of FGF1 as a therapeutic agent is limited by its lack of physicochemical stability and its limited capacity to cross the blood-spinal cord barrier. Here, we demonstrated that overexpression of FGF1 in spinal cord following SCI significantly reduced tissue loss, protected neurons in the ventricornu, ameliorated pathological morphology of the lesion, dramatically improved tissue recovery via neuroprotection, and promoted axonal regeneration and remyelination both in vivo and in vivo...
March 7, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29490650/long-non-coding-rna-gas5-regulates-proliferation-and-apoptosis-in-hcs-2-8-cells-and-growth-plate-chondrocytes-by-controlling-fgf1-expression-via-mir-21-regulation
#7
Xiong Liu, Yuqi She, Hongrong Wu, Da Zhong, Jian Zhang
BACKGROUND: LncRNA Gas5 is known to be a key control element during growth, differentiation and development in mammalian species. However, the role and function of Gas5 in growth plate chondrocytes has not been determined. METHODS: The overexpression and knockdown models of Gas5 and miR-21 in cells and animals were constructed. Cell survival was determined by MTT assay and flow cytometry. Animal biochemical indices were measured by enzyme-linked immunosorbent assay, hematoxylin/eosin staining, immunohistochemistry or in situ hybridisation...
February 28, 2018: Journal of Biomedical Science
https://www.readbyqxmd.com/read/29477835/epigenetic-regulation-of-fgf1-transcription-by-crtc1-and-memory-enhancement
#8
REVIEW
Shusaku Uchida, Gleb P Shumyatsky
Recent evidence demonstrates that epigenetic regulation of gene transcription is critically involved in learning and memory. Here, we discuss the role of histone acetylation and DNA methylation, which are two best understood epigenetic processes in memory processes. More specifically, we focus on learning-strength-dependent changes in chromatin on the fibroblast growth factor 1 (Fgf1) gene and on the molecular events that modulate regulation of Fgf1 transcription, required for memory enhancement, with the specific focus on CREB-regulated transcription coactivator 1 (CRTC1)...
February 22, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29467390/fgf1-induces-resistance-to-chemotherapy-in-ovarian-granulosa-tumor-cells-through-regulation-of-p53-mitochondrial-localization
#9
Sevasti Manousakidi, Arnaud Guillaume, Caroline Pirou, Sylvina Bouleau, Bernard Mignotte, Flore Renaud, Nathalie Le Floch
Ovarian cancer remains associated with a high mortality rate and relapse is too frequently seen after chemotherapeutic treatment of granulosa cell tumors (GCTs) or epithelial ovarian cancers (EOCs). It is thus of major importance to progress in the knowledge of the molecular mechanisms underlying chemoresistance of ovarian tumors. Overexpression of Fibroblast Growth Factor 1 (FGF1) is observed in various cancers, correlates with poor survival and could be responsible for resistance to platinum-based chemotherapy of serous ovarian cancers...
February 21, 2018: Oncogenesis
https://www.readbyqxmd.com/read/29446010/phosphaturic-mesenchymal-tumors-what-an-endocrinologist-should-know
#10
REVIEW
J M Boland, P J Tebben, A L Folpe
Tumor-induced osteomalacia (TIO), also known as "oncogenic osteomalacia", is a rare cause of osteomalacia. TIO often has an insidious onset characterized clinically by progressive muscle weakness and bone pain with fractures. The hallmark biochemical finding is a persistent low serum phosphorus concentration due to renal phosphate wasting. The vast majority of cases of TIO result from production of the phosphaturic hormone fibroblast growth factor 23 (FGF23) by a histologically distinctive mesenchymal tumor, termed "phosphaturic mesenchymal tumor" (PMT)...
February 14, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29371290/the-phosphatase-ptprg-controls-fgfr1-activity-and-influences-sensitivity-to-fgfr-kinase-inhibitors
#11
Michal Kostas, Ellen Margrethe Haugsten, Yan Zhen, Vigdis Sorensen, Patrycja Szybowska, Elisa Fiorito, Susanne Lorenz, Gustavo Antonio de Souza, Antoni Wiedlocha, Jørgen Wesche
Recently, FGFR1 was found to be overexpressed in osteosarcoma and represents an important target for precision medicine. However, because targeted cancer therapy based on FGFR inhibitors has so far been less efficient than expected, a detailed understanding of the target is important. We have here applied proximity-dependent biotin labeling combined with label-free quantitative mass spectrometry to identify determinants of FGFR1 activity in an osteosarcoma cell line. Many known FGFR interactors were identified (e...
January 25, 2018: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29304116/the-sorafenib-anti-relapse-effect-after-allohsct-is-associated-with-heightened-alloreactivity-and-accumulation-of-cd8-pd-1-cd279-lymphocytes-in-marrow
#12
Andrzej Lange, Emilia Jaskula, Janusz Lange, Grzegorz Dworacki, Dorota Nowak, Aleksandra Simiczyjew, Monika Mordak-Domagala, Mariola Sedzimirska
We studied three FLT3 ITD acute myeloid leukemia (AML) patients who relapsed after allogeneic haematopoietic stem cell transplantation (alloHSCT) and received multikinase inhibitor (MKI) sorafenib as part of salvage therapy. MKI was given to block the effect of FLT3 ITD mutation which powers proliferation of blast cells. However, the known facts that sorafenib is more effective in patents post alloHSCT suggested that this MKI can augment the immune system surveillance on leukaemia. In the present study, we investigated in depth the effect of sorafenib on the alloreactivity seen post-transplant including that on leukaemia...
2018: PloS One
https://www.readbyqxmd.com/read/29281903/assessment-of-fgfr1-over-expression-and-over-activity-in-lung-cancer-cells-a-toolkit-for-anti-fgfr1-drug-screening
#13
Penghui Hu, Hongjie Chen, Eileen M McGowan, Nina Ren, Meng Xu, Yiguang Lin
Lung cancer, caused mainly by smoking, is one of the most prevalent diseases in China, resulting in high mortality rates. The increasing incidence of chronic disease due to lung cancer places a huge burden on the welfare and cost to the Chinese society. Amplification of the fibroblast growth factor receptor 1 (FGFR1) is associated with high incidence and mortality in lung cancer patients. FGFR1 signaling is implicated in oncogenic traits such as proliferation, cell survival, angiogenesis, and migration. Targeting FGFR1 and its ligand basic FGF (bFGF) is a key step forward in developing new therapies for this crippling disease...
February 2018: Human Gene Therapy Methods
https://www.readbyqxmd.com/read/29235576/the-unfolded-protein-response-impacts-melanoma-progression-by-enhancing-fgf-expression-and-can-be-antagonized-by-a-chemical-chaperone
#14
Karin Eigner, Yüksel Filik, Florian Mark, Birgit Schütz, Günter Klambauer, Richard Moriggl, Markus Hengstschläger, Herbert Stangl, Mario Mikula, Clemens Röhrl
The mechanisms hallmarking melanoma progression are insufficiently understood. Here we studied the impact of the unfolded protein response (UPR) - a signalling cascade playing ambiguous roles in carcinogenesis - in melanoma malignancy. We identified isogenic patient-derived melanoma cell lines harboring BRAFV600E -mutations as a model system to study the role of intrinsic UPR in melanoma progression. We show that the activity of the three effector pathways of the UPR (ATF6, PERK and IRE1) was increased in metastatic compared to non-metastatic cells...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133075/spinal-cord-self-repair-during-tail-regeneration-in-polypedates-maculatus-and-putative-role-of-fgf1-as-a-neurotrophic-factor
#15
Jutshina Hota, Sushri Sangita Pati, Pravati Kumari Mahapatra
Spinal cord injury could be fatal in man and often results in irreversible medical conditions affecting mobility. However, anuran amphibians win over such pathological condition by the virtue of regeneration abilities. The tail of anuran tadpoles therefore allures researchers to study spinal cord injury and self- repair process. In the present study, we inflicted injury to the spinal cord by means of surgical transection of the tail and investigated the self-repair activity in the tadpoles of the Indian tree frog Polypedates maculatus...
March 2018: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/29128220/identification-of-potential-embryokines-in-the-bovine-reproductive-tract
#16
P Tríbulo, L G B Siqueira, L J Oliveira, T Scheffler, P J Hansen
Knowledge of the molecules used by the maternal reproductive tract to regulate development of the preimplantation embryo is largely incomplete. The goal of the present experiment was to identify candidates for this function. The approach was to assess expression patterns in the endometrium and oviduct of 93 genes encoding for hormones, growth factors, chemokines, cytokines, and WNT-related molecules. Results show that all of the genes were expressed in the reproductive tract. Expression in oviduct was affected by day of the estrous cycle for 21 genes with 11 genes having highest expression at estrus (CCL21, CTGF, CXCL10, CXCL16, DKK3, FGF10, IL18, IL33, IL34, PGF, and SFRP2), 1 gene at d 3 (WNT4), 8 at d 5 (BMP7, HGF, IL6, SFRP1, TGFB1, WIF1, WNT2, and WNT5A), and 1 at d 7 (IK)...
January 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29117903/histopathological-and-immunohistochemical-analysis-of-the-use-of-collagen-dressing-as-a-reinforcement-of-esophagic-anastomosis-in-a-rat-experimental-model
#17
Rocio Garcia-Perez, Vicente Munitiz, Carlos Manuel Martinez-Caceres, David Ruiz de Angulo, Angeles Ortiz, Luisa F Martinez de Haro, Diana Navas, Pascual Parrilla
INTRODUCTION: One of the most severe complications after esophaguectomy is anastomotic dehiscence. The use of collagen sponges could be an effective way to resolve this complication. Our objective was to perform an experimental model of esophageal anastomosis in rats to study these mechanisms. METHODS: A total of 50 Sprague-Dawley rats were used divided into 2 groups, Tachosil® group (n=25) and control group (n=25). After the section of the abdominal esophagus a single-layer esophago-gastric anastomosis was performed reinforced with 1cm of Tachosil® wrapping the anastomosis in group 1...
December 2017: Cirugía Española
https://www.readbyqxmd.com/read/29091276/simple-and-efficient-purification-of-recombinant-proteins-using-the-heparin-binding-affinity-tag
#18
Srinivas Jayanthi, Ravi Kumar Gundampati, Thallapuranam Krishnaswamy Suresh Kumar
Heparin, a member of the glycosaminoglycan family, is known to interact with more than 400 different types of proteins. For the past few decades, significant progress has been made to understand the molecular details involved in heparin-protein interactions. Based on the structural knowledge available from the FGF1-heparin interaction studies, we have designed a novel heparin-binding peptide (HBP) affinity tag that can be used for the simple, efficient, and cost-effective purification of recombinant proteins of interest...
November 1, 2017: Current Protocols in Protein Science
https://www.readbyqxmd.com/read/29048426/fgf1-protects-neuroblastoma-sh-sy5y-cells-from-p53-dependent-apoptosis-through-an-intracrine-pathway-regulated-by-fgf1-phosphorylation
#19
Caroline Pirou, Fatemeh Montazer-Torbati, Nadège Jah, Elisabeth Delmas, Christelle Lasbleiz, Bernard Mignotte, Flore Renaud
Neuroblastoma, a sympathetic nervous system tumor, accounts for 15% of cancer deaths in children. In contrast to most human tumors, p53 is rarely mutated in human primary neuroblastoma, suggesting impaired p53 activation in neuroblastoma. Various studies have shown correlations between fgf1 expression levels and both prognosis severity and tumor chemoresistance. As we previously showed that fibroblast growth factor 1 (FGF1) inhibited p53-dependent apoptosis in neuron-like PC12 cells, we initiated the study of the interaction between the FGF1 and p53 pathways in neuroblastoma...
August 31, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29017078/fgf1-and-igf1-conditioned-3d-culture-system-promoted-the-amplification-and-cancer-stemness-of-lung-cancer-cells
#20
Pengpeng Liu, Rui Zhang, Wenwen Yu, Yingnan Ye, Yanan Cheng, Lei Han, Li Dong, Yongzi Chen, Xiyin Wei, Jinpu Yu
Lung cancer stem cells (LCSCs) are considered as the cellular origins of metastasis and relapse of lung cancer. However, routine two-dimensional culture system (2D-culture) hardly mimics the growth and functions of LCSCs in vivo and therefore significantly decreases the stemness activity of LCSCs. In this study, we constructed a special BME-based three-dimensional culture system (3D-culture) to amplify LCSCs in human lung adenocarcinoma cell line A549 cells and found 3D-culture promoted the enrichment and amplification of LCSCs in A549 cells displaying higher proliferation potential and invasion activity, but lower apoptosis...
September 28, 2017: Biomaterials
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