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https://www.readbyqxmd.com/read/28445992/interaction-between-the-estrogen-receptor-and-fibroblast-growth-factor-receptor-pathways-in-non-small-cell-lung-cancer
#1
Jill M Siegfried, Mariya Farooqui, Natalie J Rothenberger, Sanja Dacic, Laura P Stabile
The estrogen receptor (ER) promotes non-small cell lung cancer (NSCLC) proliferation. Since fibroblast growth factors (FGFs) are known regulators of stem cell markers in ER positive breast cancer, we investigated whether a link between the ER, FGFs, and stem cell markers exists in NSCLC. In lung preneoplasias and adenomas of tobacco carcinogen exposed mice, the anti-estrogen fulvestrant and/or the aromatase inhibitor anastrozole blocked FGF2 and FGF9 secretion, and reduced expression of the stem cell markers SOX2 and nanog...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28433531/discovery-and-optimization-of-selective-fgfr4-inhibitors-via-scaffold-hopping
#2
Yikai Wang, Zhengxia Chen, Meibi Dai, Peipei Sun, Chunqiu Wang, Yang Gao, Haixia Zhao, Wenqin Zeng, Liang Shen, Weifeng Mao, Tian Wang, Guoping Hu, Jian Li, Shuhui Chen, Chaofeng Long, Xiaoxin Chen, Junhua Liu, Yang Zhang
Introduction of a Michael acceptor on a flexible scaffold derived from pan-FGFR inhibitors has successfully yielded a novel series of highly potent FGFR4 inhibitors with selectivity over FGFR1. Due to reduced lipophilicity and aromatic ring count, this series demonstrated improved solubility and permeability. However, plasma instability and fast metabolism limited its potential for in vivo studies. Efforts have been made to address these problems, which led to the discovery of compound (-)-11 with improved stability, CYP inhibition, and good activity/selectivity for further optimization...
April 5, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28427515/fgfr-a-promising-druggable-target-in-cancer-molecular-biology-and-new-drugs
#3
REVIEW
Rut Porta, Roberto Borea, Andreia Coelho, Shahanavaj Khan, António Araújo, Pablo Reclusa, Tindara Franchina, Nele Van Der Steen, Peter Van Dam, Jose Ferri, Rafael Sirera, Aung Naing, David Hong, Christian Rolfo
INTRODUCTION: The Fibroblast Growth Factor Receptor (FGFR) family consists of Tyrosine Kinase Receptors (TKR) involved in several biological functions. Recently, alterations of FGFR have been reported to be important for progression and development of several cancers. In this setting, different studies are trying to evaluate the efficacy of different therapies targeting FGFR. AREAS COVERED: This review summarizes the current status of treatments targeting FGFR, focusing on the trials that are evaluating the FGFR profile as inclusion criteria: Multi-Target, Pan-FGFR Inhibitors and anti-FGF (Fibroblast Growth Factor)/FGFR Monoclonal Antibodies...
May 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28416604/oncogenic-characterization-and-pharmacologic-sensitivity-of-activating-fibroblast-growth-factor-receptor-fgfr-genetic-alterations-to-the-selective-fgfr-inhibitor-erdafitinib
#4
Jayaprakash D Karkera, Gabriela Martinez Cardona, Katherine Bell, Dana Gaffney, Joseph C Portale, Ademi Santiago-Walker, Christopher Moy, Peter King, Michael Sharp, Rastilav Bahleda, Feng R Luo, John D Alvarez, Matthew V Lorenzi, Suso J Platero
Fibroblast growth factor receptor (FGFR) genetic alterations are frequently observed in cancer, suggesting that FGFR inhibition may be a promising therapy in patients harboring these lesions.  Identification of predictive and pharmacodynamic biomarkers to select and monitor patients most likely to respond to FGFR inhibition will be the key to clinical development of this class of agents.  Sensitivity to FGFR inhibition and correlation with FGFR pathway activation status were determined in molecularly annotated panels of cancer cell lines and xenograft models...
April 17, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28406928/fibroblast-growth-factor-23-promotes-terminal-differentiation-of-atdc5-cells
#5
Mathilde Guibert, Adeline Gasser, Hervé Kempf, Arnaud Bianchi
OBJECTIVES: Fibroblast Growth Factor 23 (FGF23) is well documented as a crucial player in the systemic regulation of phosphate homeostasis. Moreover, loss-of-function experiments have revealed that FGF23 also has a phosphate-independent and local impact on skeletogenesis. Here, we used ATDC5 cell line to investigate the expression of FGF23 and the role it may play locally during the differentiation of these cells. METHODS: ATDC5 cells were differentiated in the presence of insulin, and treated with recombinant FGF23 (rFGF23), inorganic phosphate (Pi) and/or PD173074, an inhibitor of FGF receptors (FGFRs)...
2017: PloS One
https://www.readbyqxmd.com/read/28388262/investigational-drugs-targeting-fibroblast-growth-factor-receptor-in-the-treatment-of-non-small-cell-lung-cancer
#6
Erika Rijavec, Carlo Genova, Giulia Barletta, Federica Biello, Giovanni Rossi, Marco Tagliamento, Maria Giovanna Dal Bello, Simona Coco, Irene Vanni, Simona Boccardo, Angela Alama, Francesco Grossi
Fibroblast growth factor receptor (FGFR) due to its central role in regulating cell survival, is a promising target for cancer therapeutics. Dysregulation of the FGFR pathway has been observed in several malignancies, including non-small cell lung cancer (NSCLC) particularly in patients with squamous histology. Areas covered: The aim of this article is to review the most relevant findings of clinical trials investigating drugs targeting FGFR pathway: such as FGFR tyrosine kinase inhibitors (TKIs), FGFR monoclonal antibodies and FGF ligand traps in NSCLC patients...
May 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/28382169/integration-of-receptor-tyrosine-kinases-determines-sensitivity-to-pi3k%C3%AE-selective-inhibitors-in-breast-cancer
#7
Yi-Chao Xu, Xiang Wang, Yi Chen, Si-Meng Chen, Xin-Ying Yang, Yi-Ming Sun, Mei-Yu Geng, Jian Ding, Ling-Hua Meng
PI3Kα-selective inhibitor BYL719 is currently in phase II/III clinical trial for the treatment of breast cancer, but highly variable response has been observed among patients. We sought to discover predictive biomarker for the efficacy of BYL719 by dissecting the proliferative signaling pathway mediated by PI3K in breast cancer. BYL719 concurrently inhibited the phosphorylation of AKT and ERK in PIK3CA-mutated human breast cancer cells. PI3K-regulated ERK phosphorylation was independent of canonical PDK1/AKT/mTOR pathway, while it was associated with RAF/MEK...
2017: Theranostics
https://www.readbyqxmd.com/read/28381415/her2-overexpressing-breast-cancers-amplify-fgfr-signaling-upon-acquisition-of-resistance-to-dual-therapeutic-blockade-of-her2
#8
Ariella B Hanker, Joan G Garrett, Monica Valeria Estrada, Preston D Moore, Paula G Ericsson, James P Koch, Emma Langley, Sharat Singh, Phillip S Kim, Garrett M Frampton, Eric M Sanford, Philip Owns, Jennifer Becker, M Reid Groseclose, Stephen Castellino, Heikki Joensuu, Jens Huober, Jan C Brase, Majjaj Samira, Sylvain Brohée, David Venet, David Brown, José Baselga, Martine Piccart, Christos Sotiriou, Carlos L Arteaga
Dual blockade of HER2 with trastuzumab and lapatinib or pertuzumab has been shown to be superior to single-agent trastuzumab. However, a significant fraction of HER2-overexpressing (HER2+) breast cancers escape from these drug combinations. In this study, we sought to discover the mechanisms of acquired resistance to the combination of lapatinib + trastuzumab.<br /><br />Experimental Design: HER2+ BT474 xenografts were treated with lapatinib + trastuzumab long-term until resistance developed. Potential mechanisms of acquired resistance were evaluated in lapatinib + trastuzumab-resistant (LTR) tumors by targeted capture next-generation sequencing...
April 5, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28379477/strong-fgfr3-staining-is-a-marker-for-fgfr3-fusions-in-diffuse-gliomas
#9
Kirsi J Granberg, Matti Annala, Birgitta Lehtinen, Juha Kesseli, Joonas Haapasalo, Pekka Ruusuvuori, Olli Yli-Harja, Tapio Visakorpi, Hannu Haapasalo, Matti Nykter, Wei Zhang
Background.: Inhibitors of fibroblast growth factor receptors (FGFRs) have recently arisen as a promising treatment option for patients with FGFR alterations. Gene fusions involving FGFR3 and transforming acidic coiled-coil protein 3 (TACC3) have been detected in diffuse gliomas and other malignancies, and fusion-positive cases have responded well to FGFR inhibition. As high FGFR3 expression has been detected in fusion-positive tumors, we sought to determine the clinical significance of FGFR3 protein expression level as well as its potential for indicating FGFR3 fusions...
April 1, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28379191/discovery-and-biological-evaluation-of-a-series-of-pyrrolo-2-3-b-pyrazines-as-novel-fgfr-inhibitors
#10
Yan Zhang, Hongchun Liu, Zhen Zhang, Ruifeng Wang, Tongchao Liu, Chaoyun Wang, Yuchi Ma, Jing Ai, Dongmei Zhao, Jingkang Shen, Bing Xiong
Abnormality of fibroblast growth factor receptor (FGFR)-mediated signaling pathways were frequently found in various human malignancies, making FGFRs hot targets for cancer treatment. To address the consistent need for a new chemotype of FGFR inhibitors, here, we started with a hit structure identified from our internal hepatocyte growth factor receptor (also called c-Met) inhibitor project, and conducted a chemical optimization. After exploring three parts of the hit compound, we finally discovered a new series of pyrrolo[2,3-b]pyrazine FGFR inhibitors, which contain a novel scaffold and unique molecular shape...
April 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28377480/a-phase-ii-study-of-dovitinib-in-patients-with-recurrent-or-metastatic-adenoid-cystic-carcinoma
#11
Patrick M Dillon, Gina R Petroni, Bethany J Horton, Christopher A Moskaluk, Paula M Fracasso, Michael G Douvas, Nikole Varhegyi, Snjezana Zaja-Milatovic, Christopher Y Thomas
Purpose: Genetic and preclinical studies have implicated fibroblast growth factor receptor (FGFR) signaling in the pathogenesis of adenoid cystic carcinoma (ACC). Dovitinib, a suppressor FGFR activity, may be active in ACC. <p>Methods: In a two-stage phase II study, 35 patients with progressive ACC were treated with dovitinib 500mg orally for 5 of 7 days continuously.  The primary endpoints were objective response rate (ORR) and change in tumor growth rate (TGR). Progression-free survival (PFS), overall survival (OS), metabolic response, biomarker and QOL were secondary endpoints...
April 4, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28368392/met-amplification-and-epithelial-to-mesenchymal-transition-exist-as-parallel-resistance-mechanisms-in-erlotinib-resistant-egfr-mutated-nsclc-hcc827-cells
#12
K R Jakobsen, C Demuth, A T Madsen, D Hussmann, J Vad-Nielsen, A L Nielsen, B S Sorensen
Although many epidermal growth factor receptor (EGFR)-mutated lung cancer patients initially benefit from the EGFR-inhibitor erlotinib, all acquire resistance. So far, several mechanisms implicated in resistance have been identified, but the existence of multiple resistance mechanisms in parallel have only been sparsely investigated. In this study, we investigated parallel resistance mechanisms acquired by HCC827, an EGFR-mutated adenocarcinoma cell line dependent on EGFR activity and sensitive to erlotinib...
April 3, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28350116/selective-fgfr-inhibitor-bgj398-inhibits-phosphorylation-of-akt-and-stat3-and-induces-cytotoxicity-in-sphere-cultured-ovarian-cancer-cells
#13
Hwa Jun Cha, Jung Hye Choi, In Chul Park, Chun Ho Kim, Sung Kwan An, Tae Jin Kim, Jae Ho Lee
Epithelial ovarian cancer is the most aggressive and lethal among the gynecological malignancies, which is often found disseminated to peritoneal cavity at the time of diagnosis. There is accumulating evidence on the existence of genetic alteration and amplification of fibroblast growth factor receptor (FGFR) in various cancers. Also the aberrated FGFR/FGF signaling has been implicated in cancer development and tumor microenvironment. However, the antitumor activity of BGJ398, a selective inhibitor of FGFR 1/2/3 against ovarian cancer still remains unknown...
March 15, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28342996/induction-of-neuroendocrine-differentiation-in-prostate-cancer-cells-by-dovitinib-tki-258-and-its-therapeutic-implications
#14
Shalini S Yadav, Jinyi Li, Jennifer A Stockert, Bryan Herzog, James O'Connor, Luis Garzon-Manco, Ramon Parsons, Ashutosh K Tewari, Kamlesh K Yadav
Prostate cancer (PCa) remains the second-leading cause of cancer-related deaths in American men with an estimated mortality of more than 26,000 in 2016 alone. Aggressive and metastatic tumors are treated with androgen deprivation therapies (ADT); however, the tumors acquire resistance and develop into lethal castration resistant prostate cancer (CRPC). With the advent of better therapeutics, the incidences of a more aggressive neuroendocrine prostate cancer (NEPC) variant continue to emerge. Although de novo occurrences of NEPC are rare, more than 25% of the therapy-resistant patients on highly potent new-generation anti-androgen therapies end up with NEPC...
March 24, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28341788/discovery-and-pharmacological-characterization-of-jnj-42756493-erdafitinib-a-functionally-selective-small-molecule-fgfr-family-inhibitor
#15
Timothy P S Perera, Eleonora Jovcheva, Laurence Mevellec, Jorge Vialard, Desiree De Lange, Tinne Verhulst, Caroline Paulussen, Kelly Van De Ven, Peter King, Eddy Freyne, David C Rees, Matthew Squires, Gordon Saxty, Martin Page, Ron Gilissen, Christopher W Murray, George Ward, Neil T Thompson, David R Newell, Na Cheng, Liang Xie, Jennifer Yang, Suso J Platero, Jayaprakash D Karkera, Christopher Moy, Patrick Angibaud, Sylvie Laquerre, Matthew V Lorenzi
Fibroblast growth factor (FGF) signaling plays critical roles in key biological processes ranging from embryogenesis to wound healing and has strong links to several hallmarks of cancer. Genetic alterations in FGF receptor (FGFR) family members are associated with increased tumor growth, metastasis, angiogenesis and decreased survival. JNJ-42756493, erdafitinib, is an orally active small molecule with potent tyrosine kinase inhibitory activity against all four FGFR family members and selectivity versus other highly related kinases...
March 24, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28340475/irinotecan-upregulates-fibroblast-growth-factor-receptor-3-expression-in-colorectal-cancer-cells-which-mitigates-irinotecan-induced-apoptosis
#16
Zeynep N Erdem, Stefanie Schwarz, Daniel Drev, Christine Heinzle, Andrea Reti, Petra Heffeter, Xenia Hudec, Klaus Holzmann, Bettina Grasl-Kraupp, Walter Berger, Michael Grusch, Brigitte Marian
BACKGROUND: Irinotecan (IRI) is an integral part of colorectal cancer (CRC) therapy, but response rates are unsatisfactory and resistance mechanisms are still insufficiently understood. As fibroblast growth factor receptor 3 (FGFR3) mediates essential survival signals in CRC, it is a candidate gene for causing intrinsic resistance to IRI. METHODS: We have used cell line models overexpressing FGFR3 to study the receptor's impact on IRI response. For pathway blockade, a dominant-negative receptor mutant and a small molecule kinase inhibitor were employed...
March 21, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28327938/targeting-the-fibroblast-growth-factor-receptor-2-in-gastric-cancer-promise-or-pitfall
#17
C Hierro, M Alsina, M Sánchez, V Serra, J Rodon, J Tabernero
Gastric cancer is the third leading cause of death from cancer worldwide. Systemic chemotherapy remains the mainstay therapeutic option for this poor prognosis cancer. Trastuzumab, the epidermal growth factor receptor 2 (ERBB2 or HER2)-antibody, is the only biological agent approved for the molecularly-selected population of HER2-positive gastric cancer patients. Over the last decade, several groups have been working for deepening into the molecular characterization of gastric cancer, shedding some light into the heterogeneity of this tumour...
March 7, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28314589/fgfr2-mutations-are-associated-with-poor-outcomes-in-endometrioid-endometrial-cancer-an-nrg-oncology-gynecologic-oncology-group-study
#18
Yvette W Jeske, Shamshad Ali, Sara A Byron, Feng Gao, Robert S Mannel, Rahel G Ghebre, Paul A DiSilvestro, Shashikant B Lele, Michael L Pearl, Amy P Schmidt, Heather A Lankes, Nilsa C Ramirez, Golnar Rasty, Matthew Powell, Paul J Goodfellow, Pamela M Pollock
PURPOSE: Activating FGFR2 mutations have been identified in ~10% of endometrioid endometrial cancers (ECs). We have previously reported that mutations in FGFR2 are associated with shorter disease free survival (DFS) in stage I/II EC patients. Here we sought to validate the prognostic importance of FGFR2 mutations in a large, multi-institutional patient cohort. METHODS: Tumors were collected as part of the GOG 210 clinical trial "Molecular Staging of Endometrial Cancer" where samples underwent rigorous pathological review and had more than three years of detailed clinical follow-up...
March 14, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28264865/gatekeeper-mutations-and-intratumoral-heterogeneity-in-fgfr2-translocated-cholangiocarcinoma
#19
Elizabeth C Smyth, Irina S Babina, Nicholas C Turner
FGFR2 genetic translocations are frequent in cholangiocarcinoma, yet despite initial sensitivity to FGFR inhibitors in clinic, patients quickly become resistant to targeted therapies. The work published by Goyal and colleagues demonstrates that acquisition of gatekeeper mutations in FGFR2 and intratumoral heterogeneity drive resistance in patients with FGFR2-translocated intrahepatic cholangiocarcinoma, which will have important implications for management of the disease in clinic. Cancer Discov; 7(3); 248-9...
March 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28263980/an-fgfr-inhibitor-converts-the-tumor-promoting-effect-of-tgf-%C3%AE-by-the-induction-of-fibroblast-associated-genes-of-hepatoma-cells
#20
H-R Zhang, X-D Wang, X Yang, D Chen, J Hao, R Cao, X-Z Wu
Tumors consistently mimic wound-generating chronic inflammation; however, why they do not heal like wounds with fibrotic scars remains unknown. The components of the tumor microenvironment, such as transforming growth factor β (TGF-β) and fibroblast growth factors (FGFs), may account for this phenomenon. Tumor formation involves continuous activation of the FGF pathway, whereas the repair of tissue injury is a self-limiting process accompanied with controlled activation of the FGF pathway. In the tumor microenvironment TGF-β increases the secretion of FGFs, further promoting the malignant biological properties of tumors...
March 6, 2017: Oncogene
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