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https://www.readbyqxmd.com/read/29451369/discovery-of-rogaratinib-bay-1163877-a-pan-fgfr-inhibitor
#1
Marie-Pierre Collin, Mario Lobell, Walter Hübsch, Dirk Brohm, Hartmut Schirok, Rolf Jautelat, Klemens Lustig, Ulf Bömer, Verena Vöhringer, Mélanie Héroult, Sylvia Grünewald, Holger Hess-Stumpp
Rogaratinib (BAY 1163877) is a highly potent and selective small-molecule pan-fibroblast growth factor receptor (FGFR) inhibitor (FGFR1-4) for oral application currently being investigated in phase 1 clinical trials for the treatment of cancer. In this publication, we report its discovery by de novo structure-based design and medicinal chemistry optimization together with its pharmacokinetic profile.
February 16, 2018: ChemMedChem
https://www.readbyqxmd.com/read/29449529/gambogenic-acid-inhibits-fibroblast-growth-factor-receptor-signaling-pathway-in-erlotinib-resistant-non-small-cell-lung-cancer-and-suppresses-patient-derived-xenograft-growth
#2
Linfeng Xu, Xiaoxiao Meng, Naihan Xu, Wenwei Fu, Hongsheng Tan, Li Zhang, Qianjun Zhou, Jianan Qian, Shiwei Tu, Xueting Li, Yuanzhi Lao, Hongxi Xu
Erlotinib resistance causes a high degree of lethality in non-small-cell lung cancer (NSCLC) patients. The high expression and activation of several receptor tyrosine kinases, such as JAK/STAT3, c-Met, and EGFR, play important roles in drug resistance. The development of tyrosine kinase inhibitors is urgently required in the clinic. Our previous study found that Gambogenic acid (GNA), a small molecule derived from the traditional Chinese medicine herb gamboge, induced cell death in several NSCLC cell lines through JAK/STAT3 inhibition...
February 15, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29408314/fibroblast-growth-factor-receptor-inhibition-induces-loss-of-matrix-mcl1-and-necrosis-in-cholangiocarcinoma
#3
Ayano Kabashima, Petra Hirsova, Steven F Bronk, Matthew C Hernandez, Mark J Truty, Sumera Rizvi, Scott H Kaufmann, Gregory J Gores
BACKGROUND & AIMS: Myeloid cell leukemia1 (MCL1), a prosurvival member of the BCL2 protein family, plays a pivotal role in human cholangiocarcinoma (CCA) cell survival. We have previously reported that fibroblast growth factor receptor (FGFR) signaling mediates MCL1-dependent survival of CCA cells in vitro and in vivo. However, the mode and mechanisms of cell death in this model were not delineated. METHODS: Human CCA cell lines were treated with the pan-FGFR inhibitor LY2874455 and the mode of cell death examined by several complementary assays...
February 2, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29388014/the-landscape-of-genetic-alterations-in-ameloblastomas-relates-to-clinical-features
#4
Sibel Elif Gültekin, Reem Aziz, Carina Heydt, Burcu Sengüven, Joachim Zöller, Ali Farid Safi, Matthias Kreppel, Reinhard Buettner
Ameloblastoma is a mostly benign, but locally invasive odontogenic tumor eliciting frequent relapses and significant morbidity. Recently, mutually exclusive mutations in BRAF and SMO were identified causing constitutive activation of MAPK and hedgehog signaling pathways. To explore further such clinically relevant genotype-phenotype correlations, we here comprehensively analyzed a large series of ameloblastomas (98 paraffin block of 76 patients) with respect to genomic alterations, clinical presentation, and histological features collected from the archives of three different pathology centers in France, Germany, and Turkey...
February 1, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29371290/the-phosphatase-ptprg-controls-fgfr1-activity-and-influences-sensitivity-to-fgfr-kinase-inhibitors
#5
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/29368062/a-comprehensive-evaluation-of-clinicopathologic-characteristics-molecular-features-and-prognosis-in-lung-adenocarcinoma-with-solid-component
#6
Jing Li, Wenjie You, Difan Zheng, Bei Yan, Xiao Ma, Yunjian Pan, Yang Zhang, Yuan Li, Xuxia Shen, Xinghua Cheng, Yihua Sun, Haiquan Chen
PURPOSE: We have reported that solid predominant lung adenocarcinoma according to the IASLC/ATS/ERS classification was associated with poor prognosis. However, the correlation of solid component with clinicopathological, molecular features, and prognosis in all lung adenocarcinoma patients remains unexplored. METHODS: Surgically resected lung adenocarcinomas were divided into three groups, solid predominant (solid component accounting for at least 50%), solid minor (solid component accounting for 5-45%) and solid negative...
January 24, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29361614/-systemic-treatment-of-malignant-pleural-mesothelioma
#7
Takashi Nakano
Malignant pleural mesothelioma(MPM)is a highly aggressive tumor with a poor prognosis and an increasing incidence worldwide. The only standard first-line chemotherapy for patients with unresectable MPM is cisplatin(CDDP)plus peme- trexed(PEM)(CDDP/PEM), with a median overall survival of about 12months and a median progression-free survival(PFS) of less than 6 months. There are no treatments with proven benefit on survival for relapsed MPM patients. Therefore, novel therapeutic strategies are urgently required...
December 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29359239/the-orally-available-multikinase-inhibitor-regorafenib-bay-73-4506-in-multiple-myeloma
#8
Iris Breitkreutz, Klaus Podar, Vianihuini Figueroa-Vazquez, Scott Wilhelm, Patrick J Hayden, Kenneth C Anderson, Marc S Raab
A promising approach to the treatment of multiple myeloma (MM) involves agents that target not only the myeloma cells directly, but also the tumor microenvironment which promotes tumor cell growth, angiogenesis, and MM bone disease. Here we investigate the orally available multikinase inhibitor, regorafenib (BAY 73-4506), for its therapeutic efficacy in MM. Regorafenib is a potent inhibitor of angiogenic (VEGFR 1-3, PDGFR-b) as well as oncogenic (c-KIT, RET, FGFR, Raf) kinases. We show that regorafenib induces apoptosis in all MM cell lines at below clinically achievable concentrations...
January 23, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29358619/novel-therapeutic-strategy-for-cervical-cancer-harboring-fgfr3-tacc3-fusions
#9
Ryo Tamura, Kosuke Yoshihara, Tetsuya Saito, Ryosuke Ishimura, Juan Emmanuel Martínez-Ledesma, Hu Xin, Tatsuya Ishiguro, Yutaro Mori, Kaoru Yamawaki, Kazuaki Suda, Seiya Sato, Hiroaki Itamochi, Teiichi Motoyama, Yoichi Aoki, Shujiro Okuda, Cristine R Casingal, Hirofumi Nakaoka, Ituro Inoue, Roel G W Verhaak, Masaaki Komatsu, Takayuki Enomoto
We previously found that therapeutic targetable fusions are detected across various cancers. To identify therapeutic targetable fusion in uterine cervical cancer, for which no effective gene targeted therapy has yet been clinically applied, we analyzed RNA sequencing data from 306 cervical cancer samples. We detected 445 high confidence fusion transcripts and identified four samples that harbored FGFR3-TACC3 fusion as an attractive therapeutic target. The frequency of FGFR3-TACC3-fusion-positive cervical cancer is also 1...
January 23, 2018: Oncogenesis
https://www.readbyqxmd.com/read/29354493/different-stages-in-drug-development-for-muscle-invasive-bladder-cancer
#10
REVIEW
Gallus Beatus Ineichen, Raphael Röthlisberger, Kevin Fabian Johner, Roland Seiler
Muscle-invasive bladder cancer (MIBC) is a highly aggressive disease. Despite optimal therapy, half of the patients will succumb to disease. This prognosis could not be improved over the last three decades. Therefore, MIBC is left behind from other cancers such as prostate, where novel treatment options were discovered and improve patient outcomes. While being aware of the recent emerging evidence of checkpoint inhibition in MIBC, we aim to describe different stages of drug development in MIBC by using three specific targets...
December 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/29348459/distinct-dependencies-on-receptor-tyrosine-kinases-in-the-regulation-of-mapk-signaling-between-braf-v600e-and-non-v600e-mutant-lung-cancers
#11
Hiroshi Kotani, Yuta Adachi, Hidenori Kitai, Shuta Tomida, Hideaki Bando, Anthony C Faber, Takayuki Yoshino, Dominic C Voon, Seiji Yano, Hiromichi Ebi
BRAF is one of the most frequently mutated genes across a number of different cancers, with the best-characterized mutation being V600E. Despite the successes of treating BRAF mutant V600E lung cancer with BRAF pathway inhibitors, treatment strategies targeting tumors with non-V600E mutations are yet to be established. We studied cellular signaling differences between lung cancers with different BRAF mutations and determined their sensitivities to BRAF pathway inhibitors. Here, we observed that MEK inhibition induced feedback activation of the receptor tyrosine kinase (RTK) EGFR, and in some cases the RTK FGFR, resulting in transient suppression of ERK phosphorylation in BRAF non-V600E, but not BRAF V600E, mutant cells...
January 19, 2018: Oncogene
https://www.readbyqxmd.com/read/29334610/phase-ii-study-of-dovitinib-in-patients-with-castration-resistant-prostate-cancer-kcsg-gu11-05
#12
Yoon Ji Choi, Hye Sook Kim, Se Hoon Park, Bong-Seog Kim, Kyoung Ha Kim, Hyo Jin Lee, Hong Suk Song, Dong-Yeop Shin, Ha Young Lee, Hoon-Gu Kim, Kyung Hee Lee, Jae Lyun Lee, Kyong Hwa Park
Purpose: Fibroblast growth factor (FGF) signals are important in carcinogenesis and progression of prostate cancer. Dovitinib is an oral, pan-class inhibitor of vascular endothelial growth factor receptor (VEGFR), platelet-derived growth factor receptor, and fibroblast growth factor receptor (FGFR). We evaluated the efficacy and toxicity of dovitinib in men with metastatic castration resistant prostate cancer (mCRPC). Materials and Methods: This study was a single-arm, phase II, open-label, multicenter trial of dovitinib 500mg/day (5-days-on/2-days-off schedule)...
January 2, 2018: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/29331886/anti-cancer-effects-of-hnha-and-lenvatinib-by-the-suppression-of-emt-mediated-drug-resistance-in-cancer-stem-cells
#13
Yong Sang Lee, Seok-Mo Kim, Bup-Woo Kim, Ho Jin Chang, Soo Young Kim, Cheong Soo Park, Ki Cheong Park, Hang-Seok Chang
Anaplastic thyroid cancer (ATC) constitutes less than 2% of total thyroid cancers but accounts for 20-40% of thyroid cancer-related deaths. Cancer stem cell drug resistance represents a primary factor hindering treatment. This study aimed to develop targeted agents against thyroid malignancy, focusing on individual and synergistic effects of HNHA (histone deacetylase), lenvatinib (FGFR), and sorafenib (tyrosine kinase) inhibitors. Patients with biochemically and histologically proven papillary thyroid cancer (PTC) and ATC were included...
January 11, 2018: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/29323298/a-metabolic-function-of-fgfr3-tacc3-gene-fusions-in-cancer
#14
Véronique Frattini, Stefano M Pagnotta, Tala, Jerry J Fan, Marco V Russo, Sang Bae Lee, Luciano Garofano, Jing Zhang, Peiguo Shi, Genevieve Lewis, Heloise Sanson, Vanessa Frederick, Angelica M Castano, Luigi Cerulo, Delphine C M Rolland, Raghvendra Mall, Karima Mokhtari, Kojo S J Elenitoba-Johnson, Marc Sanson, Xi Huang, Michele Ceccarelli, Anna Lasorella, Antonio Iavarone
Chromosomal translocations that generate in-frame oncogenic gene fusions are notable examples of the success of targeted cancer therapies. We have previously described gene fusions of FGFR3-TACC3 (F3-T3) in 3% of human glioblastoma cases. Subsequent studies have reported similar frequencies of F3-T3 in many other cancers, indicating that F3-T3 is a commonly occuring fusion across all tumour types. F3-T3 fusions are potent oncogenes that confer sensitivity to FGFR inhibitors, but the downstream oncogenic signalling pathways remain unknown...
January 11, 2018: Nature
https://www.readbyqxmd.com/read/29317150/design-synthesis-and-evaluate-of-novel-dual-fgfr1-and-hdac-inhibitors-bearing-an-indazole-scaffold
#15
Jian Liu, Chengbo Qian, Yehua Zhu, Jianguo Cai, Yufang He, Jie Li, Tianlin Wang, Haohao Zhu, Zhi Li, Wei Li, Lihong Hu
Both histone deacetylase (HDAC) and fibroblast growth factor receptor (FGFR) are important targets for cancer therapy. Although combining dual HDAC pharmacophore with tyrosine kinase inhibitors (TKIs) had achieved a successful progress, dual HDAC/FGFR1 inhibitors haven't been reported yet. Herein, we designed a series of hybrids bearing 1H-indazol-3-amine and benzohydroxamic acids scaffold with scaffold hopping and molecular hybridization strategies. Among them, compound 7j showed the most potent inhibitory activity against HDAC6 with IC50 of 34 nM and exhibited the great inhibitory activities against a human breast cancer cell line MCF-7 with IC50 of 9 μM in vitro...
December 29, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29312610/inhibitor-repurposing-reveals-alk-ltk-fgfr-ret-and-trk-kinases-as-the-targets-of-azd1480
#16
Iva Gudernova, Lukas Balek, Miroslav Varecha, Jana Fialova Kucerova, Michaela Kunova Bosakova, Bohumil Fafilek, Veronika Palusova, Stjepan Uldrijan, Lukas Trantirek, Pavel Krejci
Many tyrosine kinase inhibitors (TKIs) have failed to reach human use due to insufficient activity in clinical trials. However, the failed TKIs may still benefit patients if their other kinase targets are identified by providing treatment focused on syndromes driven by these kinases. Here, we searched for novel targets of AZD1480, an inhibitor of JAK2 kinase that recently failed phase two cancer clinical trials due to a lack of activity. Twenty seven human receptor tyrosine kinases (RTKs) and 153 of their disease-associated mutants were in-cell profiled for activity in the presence of AZD1480 using a newly developed RTK plasmid library...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29282682/targeted-therapies-against-growth-factor-signaling-in-breast-cancer
#17
Juan Du, Yu Yu, Jun Zhan, Hongquan Zhang
Breast cancer is the most prevalent female malignancy throughout the world. Conventional treatment strategies for breast cancer consist of chemotherapy, radiation, surgery, chemoradiation, hormone therapy, and targeted therapies. Among them, targeted therapies show advantages to reduce cost and toxicity for being possible for individualized treatments based on the intrinsic subtypes of breast cancer. With deeper understanding of key signaling pathways concerning tumor growth and survival, growth factor-controlled signaling pathways are frequently dysregulated in the development and progression of breast cancer...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29259745/identification-of-an-indazole-based-pharmacophore-for-the-inhibition-of-fgfr-kinases-using-fragment-led-de-novo-design
#18
Lewis D Turner, Abbey J Summers, Laura O Johnson, Margaret A Knowles, Colin W G Fishwick
Structure-based drug design (SBDD) has become a powerful tool utilized by medicinal chemists to rationally guide the drug discovery process. Herein, we describe the use of SPROUT, a de novo-based program, to identify an indazole-based pharmacophore for the inhibition of fibroblast growth factor receptor (FGFR) kinases, which are validated targets for cancer therapy. Hit identification using SPROUT yielded 6-phenylindole as a small fragment predicted to bind to FGFR1. With the aid of docking models, several modifications to the indole were made to optimize the fragment to an indazole-containing pharmacophore, leading to a library of compounds containing 23 derivatives...
December 14, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29251665/molecular-pathology-of-lung-cancer-current-status-and-perspectives
#19
Felicitas Oberndorfer, Leonhard Müllauer
PURPOSE OF REVIEW: In this article, we summarize the current knowledge on molecular alterations in lung cancer that are targets for therapy, and provide an outlook on the future development of molecular pathology in precision oncology. RECENT FINDINGS: Lung cancer has become a paradigm for the success of molecular targeted therapies in solid tumors. Tyrosine kinase inhibitors are effective treatment options in adenocarcinoma patients with an EGFR, ALK, ROS1 or B-Raf Proto-Oncogene, Serine/Threonine kinase mutation...
March 2018: Current Opinion in Oncology
https://www.readbyqxmd.com/read/29247039/h3b-6527-is-a-potent-and-selective-inhibitor-of-fgfr4-in-fgf19-driven-hepatocellular-carcinoma
#20
Jaya Julie Joshi, Heather Coffey, Erik Corcoran, Jennifer Tsai, Chia-Ling Huang, Kana Ichikawa, Sudeep Prajapati, Ming-Hong Hao, Suzanna Bailey, Jeremy Wu, Victoria Rimkunas, Craig Karr, Vanitha Subramanian, Pavan Kumar, Crystal MacKenzie, Raelene Hurley, Takashi Satoh, Kun Yu, Eunice Park, Nathalie Rioux, Amy Kim, Weidong G Lai, Lihua Yu, Ping Zhu, Silvia Buonamici, Nicholas Larsen, Peter Fekkes, John Wang, Markus Warmuth, Dominic J Reynolds, Peter G Smith, Anand Selvaraj
Activation of the fibroblast growth factor receptor FGFR4 by FGF19 drives hepatocellular carcinoma (HCC), a disease with few, if any, effective treatment options. While a number of pan-FGFR inhibitors are being clinically evaluated, their application to FGF19-driven HCC may be limited by dose-limiting toxicities mediated by FGFR1-3 receptors. To evade the potential limitations of pan-FGFR inhibitors, we generated H3B-6527, a highly selective covalent FGFR4 inhibitor, through structure-guided drug design. Studies in a panel of 40 HCC cell lines and 30 HCC PDX models showed that FGF19 expression is a predictive biomarker for H3B-6527 response...
December 15, 2017: Cancer Research
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