1
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Pu X, Qi L, Yan JW, Ai Z, Wu P, Yang F, Fu Y, Li X, Zhang M, Sun B, Yue S, Chen J. Oncogenic activation revealed by FGFR2 genetic alterations in intrahepatic cholangiocarcinomas. Cell Biosci 2023; 13:208. [PMID: 37964396 PMCID: PMC10644541 DOI: 10.1186/s13578-023-01156-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 10/26/2023] [Indexed: 11/16/2023] Open
Abstract
BACKGROUND Except for gene fusions, FGFR2 genetic alterations in intrahepatic cholangiocarcinomas (ICCs) have received limited attention, leaving patients harboring activating FGFR2 gene mutations with inadequate access to targeted therapies. EXPERIMENTAL DESIGN We sought to survey FGFR2 genetic alterations in ICC and pan-cancers using fluorescence in situ hybridization and next-generation sequencing. We conducted an analysis of the clinical and pathological features of ICCs with different FGFR2 alterations, compared FGFR2 lesion spectrum through public databases and multicenter data, and performed cellular experiments to investigate the oncogenic potential of different FGFR2 mutants. RESULTS FGFR2 gene fusions were identified in 30 out of 474 ICC samples, while five FGFR2 genetic alterations aside from fusion were present in 290 ICCs. The tumors containing FGFR2 translocations exhibited unique features, which we designated as the "FGFR2 fusion subtypes of ICC". Molecular analysis revealed that FGFR2 fusions were not mutually exclusive with other oncogenic driver genes/mutations, whereas FGFR2 in-frame deletions and site mutations often co-occurred with TP53 mutations. Multicenter and pan-cancer studies demonstrated that FGFR2 in-frame deletions were more prevalent in ICCs (0.62%) than in other cancers, and were not limited to the extracellular domain. We selected representative FGFR2 genetic alterations, including in-frame deletions, point mutations, and frameshift mutations, to analyze their oncogenic activity and responsiveness to targeted drugs. Cellular experiments revealed that different FGFR2 genetic alterations promoted ICC tumor growth, invasion, and metastasis but responded differently to FGFR-selective small molecule kinase inhibitors (SMKIs). CONCLUSIONS FGFR2 oncogenic alterations have different clinicopathological features and respond differently to SMKIs.
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Affiliation(s)
- Xiaohong Pu
- Department of Pathology, Drum Tower Hospital, Affiliated Hospital of Medical School,Nanjing University, Nanjing, 210008, Jiangsu, China
| | - Liang Qi
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210008, Jiangsu, China
| | - Jia Wu Yan
- Department of Hepatobiliary Surgery, Drum Tower Hospital, Affiliated Hospital of Medical School,Nanjing University, Nanjing, 210008, Jiangsu, China
| | - Zihe Ai
- Department of Medical Genetics, Nanjing Medical University, Nanjing, 210008, Jiangsu, China
| | - Ping Wu
- Department of Medical Genetics, Nanjing Medical University, Nanjing, 210008, Jiangsu, China
| | - Fei Yang
- Department of Hepatobiliary Surgery, Drum Tower Hospital, Affiliated Hospital of Medical School,Nanjing University, Nanjing, 210008, Jiangsu, China
| | - Yao Fu
- Department of Pathology, Drum Tower Hospital, Affiliated Hospital of Medical School,Nanjing University, Nanjing, 210008, Jiangsu, China
| | - Xing Li
- Shanghai Origimed Limited Company, Shanghai, 20000, China
| | - Min Zhang
- Beijing Gene Plus Limited Company, Beijing, 10000, China
| | - Beicheng Sun
- Department of Hepatobiliary Surgery, Drum Tower Hospital, Affiliated Hospital of Medical School,Nanjing University, Nanjing, 210008, Jiangsu, China.
| | - Shen Yue
- Department of Medical Genetics, Nanjing Medical University, Nanjing, 210008, Jiangsu, China.
| | - Jun Chen
- Department of Pathology, Drum Tower Hospital, Affiliated Hospital of Medical School,Nanjing University, Nanjing, 210008, Jiangsu, China.
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2
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Lin CC, Wieteska L, Poncet-Montange G, Suen KM, Arold ST, Ahmed Z, Ladbury JE. The combined action of the intracellular regions regulates FGFR2 kinase activity. Commun Biol 2023; 6:728. [PMID: 37452126 PMCID: PMC10349056 DOI: 10.1038/s42003-023-05112-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 07/07/2023] [Indexed: 07/18/2023] Open
Abstract
Receptor tyrosine kinases (RTKs) are typically activated through a precise sequence of intracellular phosphorylation events starting with a tyrosine residue on the activation loop (A-loop) of the kinase domain (KD). From this point the mono-phosphorylated enzyme is active, but subject to stringent regulatory mechanisms which can vary dramatically across the different RTKs. In the absence of extracellular stimulation, fibroblast growth factor receptor 2 (FGFR2) exists in the mono-phosphorylated state in which catalytic activity is regulated to allow rapid response upon ligand binding, whilst restricting ligand-independent activation. Failure of this regulation is responsible for pathologic outcomes including cancer. Here we reveal the molecular mechanistic detail of KD control based on combinatorial interactions of the juxtamembrane (JM) and the C-terminal tail (CT) regions of the receptor. JM stabilizes the asymmetric dimeric KD required for substrate phosphorylation, whilst CT binding opposes dimerization, and down-regulates activity. Direct binding between JM and CT delays the recruitment of downstream effector proteins adding a further control step as the receptor proceeds to full activation. Our findings underscore the diversity in mechanisms of RTK oligomerisation and activation.
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Affiliation(s)
- Chi-Chuan Lin
- School of Molecular and Cellular Biology, and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Lukasz Wieteska
- School of Molecular and Cellular Biology, and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Guillaume Poncet-Montange
- Center for the Development of Therapeutics, Broad Institute of MIT & Harvard, Cambridge, MA, 02142, USA
| | - Kin Man Suen
- School of Molecular and Cellular Biology, and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Stefan T Arold
- King Abdullah University of Science and Technology, Computational Bioscience Research Center, Division of Biological and Environmental Sciences and Engineering, Thuwal, 23955-6900, Saudi Arabia
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090, Montpellier, France
| | - Zamal Ahmed
- Department of Molecular and Cellular Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - John E Ladbury
- School of Molecular and Cellular Biology, and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK.
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3
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Arai H, Minami Y, Chi S, Utsu Y, Masuda S, Aotsuka N. Molecular-Targeted Therapy for Tumor-Agnostic Mutations in Acute Myeloid Leukemia. Biomedicines 2022; 10:3008. [PMID: 36551764 PMCID: PMC9775249 DOI: 10.3390/biomedicines10123008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 11/24/2022] Open
Abstract
Comprehensive genomic profiling examinations (CGPs) have recently been developed, and a variety of tumor-agnostic mutations have been detected, leading to the development of new molecular-targetable therapies across solid tumors. In addition, the elucidation of hereditary tumors, such as breast and ovarian cancer, has pioneered a new age marked by the development of new treatments and lifetime management strategies required for patients with potential or presented hereditary cancers. In acute myeloid leukemia (AML), however, few tumor-agnostic or hereditary mutations have been the focus of investigation, with associated molecular-targeted therapies remaining poorly developed. We focused on representative tumor-agnostic mutations such as the TP53, KIT, KRAS, BRCA1, ATM, JAK2, NTRK3, FGFR3 and EGFR genes, referring to a CGP study conducted in Japan, and we considered the possibility of developing molecular-targeted therapies for AML with tumor-agnostic mutations. We summarized the frequency, the prognosis, the structure and the function of these mutations as well as the current treatment strategies in solid tumors, revealed the genetical relationships between solid tumors and AML and developed tumor-agnostic molecular-targeted therapies and lifetime management strategies in AML.
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Affiliation(s)
- Hironori Arai
- Department of Hematology and Oncology, Japanese Red Cross Narita Hospital, Iidacho 286-0041, Japan
- Department of Hematology, National Cancer Center Hospital East, Kashiwa 277-8577, Japan
| | - Yosuke Minami
- Department of Hematology, National Cancer Center Hospital East, Kashiwa 277-8577, Japan
| | - SungGi Chi
- Department of Hematology, National Cancer Center Hospital East, Kashiwa 277-8577, Japan
| | - Yoshikazu Utsu
- Department of Hematology and Oncology, Japanese Red Cross Narita Hospital, Iidacho 286-0041, Japan
| | - Shinichi Masuda
- Department of Hematology and Oncology, Japanese Red Cross Narita Hospital, Iidacho 286-0041, Japan
| | - Nobuyuki Aotsuka
- Department of Hematology and Oncology, Japanese Red Cross Narita Hospital, Iidacho 286-0041, Japan
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4
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Zingg D, Bhin J, Yemelyanenko J, Kas SM, Rolfs F, Lutz C, Lee JK, Klarenbeek S, Silverman IM, Annunziato S, Chan CS, Piersma SR, Eijkman T, Badoux M, Gogola E, Siteur B, Sprengers J, de Klein B, de Goeij-de Haas RR, Riedlinger GM, Ke H, Madison R, Drenth AP, van der Burg E, Schut E, Henneman L, van Miltenburg MH, Proost N, Zhen H, Wientjens E, de Bruijn R, de Ruiter JR, Boon U, de Korte-Grimmerink R, van Gerwen B, Féliz L, Abou-Alfa GK, Ross JS, van de Ven M, Rottenberg S, Cuppen E, Chessex AV, Ali SM, Burn TC, Jimenez CR, Ganesan S, Wessels LFA, Jonkers J. Truncated FGFR2 is a clinically actionable oncogene in multiple cancers. Nature 2022; 608:609-617. [PMID: 35948633 PMCID: PMC9436779 DOI: 10.1038/s41586-022-05066-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 07/03/2022] [Indexed: 12/13/2022]
Abstract
Somatic hotspot mutations and structural amplifications and fusions that affect fibroblast growth factor receptor 2 (encoded by FGFR2) occur in multiple types of cancer1. However, clinical responses to FGFR inhibitors have remained variable1–9, emphasizing the need to better understand which FGFR2 alterations are oncogenic and therapeutically targetable. Here we apply transposon-based screening10,11 and tumour modelling in mice12,13, and find that the truncation of exon 18 (E18) of Fgfr2 is a potent driver mutation. Human oncogenomic datasets revealed a diverse set of FGFR2 alterations, including rearrangements, E1–E17 partial amplifications, and E18 nonsense and frameshift mutations, each causing the transcription of E18-truncated FGFR2 (FGFR2ΔE18). Functional in vitro and in vivo examination of a compendium of FGFR2ΔE18 and full-length variants pinpointed FGFR2-E18 truncation as single-driver alteration in cancer. By contrast, the oncogenic competence of FGFR2 full-length amplifications depended on a distinct landscape of cooperating driver genes. This suggests that genomic alterations that generate stable FGFR2ΔE18 variants are actionable therapeutic targets, which we confirmed in preclinical mouse and human tumour models, and in a clinical trial. We propose that cancers containing any FGFR2 variant with a truncated E18 should be considered for FGFR-targeted therapies. Truncation of exon 18 of FGFR2 (FGFR2ΔE18) is a potent driver mutation in mice and humans, and FGFR-targeted therapy should be considered for patients with cancer expressing stable FGFR2ΔE18 variants.
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Affiliation(s)
- Daniel Zingg
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Jinhyuk Bhin
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands.,Division of Molecular Carcinogenesis, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Julia Yemelyanenko
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Sjors M Kas
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Frank Rolfs
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands.,OncoProteomics Laboratory, Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Catrin Lutz
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | | | - Sjoerd Klarenbeek
- Experimental Animal Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | | | - Stefano Annunziato
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Chang S Chan
- Department of Medicine, Division of Medical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA.,Department of Medicine and Pharmacology, Rutgers University, Piscataway, NJ, USA
| | - Sander R Piersma
- OncoProteomics Laboratory, Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Timo Eijkman
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Madelon Badoux
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Ewa Gogola
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Bjørn Siteur
- Mouse Clinic for Cancer and Aging, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Justin Sprengers
- Mouse Clinic for Cancer and Aging, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Bim de Klein
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Richard R de Goeij-de Haas
- OncoProteomics Laboratory, Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Gregory M Riedlinger
- Department of Medicine and Pharmacology, Rutgers University, Piscataway, NJ, USA.,Department of Pathology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Hua Ke
- Department of Medicine, Division of Medical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA.,Department of Medicine and Pharmacology, Rutgers University, Piscataway, NJ, USA
| | | | - Anne Paulien Drenth
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Eline van der Burg
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Eva Schut
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Linda Henneman
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands.,Mouse Clinic for Cancer and Aging, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Martine H van Miltenburg
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Natalie Proost
- Mouse Clinic for Cancer and Aging, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | | | - Ellen Wientjens
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | - Roebi de Bruijn
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands.,Division of Molecular Carcinogenesis, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Julian R de Ruiter
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands.,Division of Molecular Carcinogenesis, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Ute Boon
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Oncode Institute, Utrecht, The Netherlands
| | | | - Bastiaan van Gerwen
- Mouse Clinic for Cancer and Aging, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Luis Féliz
- Incyte Biosciences International, Morges, Switzerland
| | - Ghassan K Abou-Alfa
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Department of Medicine, Weill Medical College at Cornell University, New York, NY, USA
| | - Jeffrey S Ross
- Foundation Medicine, Cambridge, MA, USA.,Upstate University Hospital, Upstate Medical University, Syracuse, NY, USA
| | - Marieke van de Ven
- Mouse Clinic for Cancer and Aging, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Sven Rottenberg
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands.,Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.,Bern Center for Precision Medicine, University of Bern, Bern, Switzerland
| | - Edwin Cuppen
- Oncode Institute, Utrecht, The Netherlands.,Hartwig Medical Foundation, Amsterdam, The Netherlands.,Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | | | | | - Connie R Jimenez
- OncoProteomics Laboratory, Department of Medical Oncology, Cancer Center Amsterdam, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Shridar Ganesan
- Department of Medicine, Division of Medical Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA. .,Department of Medicine and Pharmacology, Rutgers University, Piscataway, NJ, USA.
| | - Lodewyk F A Wessels
- Oncode Institute, Utrecht, The Netherlands. .,Division of Molecular Carcinogenesis, Netherlands Cancer Institute, Amsterdam, The Netherlands.
| | - Jos Jonkers
- Division of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, The Netherlands. .,Oncode Institute, Utrecht, The Netherlands.
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5
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Silverman IM, Li M, Murugesan K, Krook MA, Javle MM, Kelley RK, Borad MJ, Roychowdhury S, Meng W, Yilmazel B, Milbury C, Shewale S, Feliz L, Burn TC, Albacker LA. Validation and Characterization of FGFR2 Rearrangements in Cholangiocarcinoma with Comprehensive Genomic Profiling. J Mol Diagn 2022; 24:351-364. [PMID: 35176488 DOI: 10.1016/j.jmoldx.2021.12.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 10/26/2021] [Accepted: 12/01/2021] [Indexed: 12/12/2022] Open
Abstract
Cholangiocarcinoma (CCA) is a heterogeneous biliary tract cancer with a poor prognosis. Approximately 30% to 50% of patients harbor actionable alterations, including FGFR2 rearrangements. Pemigatinib, a potent, selective fibroblast growth factor receptor (FGFR) FGFR1-3 inhibitor, is approved for previously treated, unresectable, locally advanced or metastatic CCA harboring FGFR2 fusions/rearrangements, as detected by a US Food and Drug Administration-approved test. The next-generation sequencing (NGS)-based FoundationOneCDx (F1CDx) was US Food and Drug Administration approved for detecting FGFR2 fusions or rearrangements. The precision and reproducibility of F1CDx in detecting FGFR2 rearrangements in CCA were examined. Analytical concordance between F1CDx and an externally validated RNA-based NGS (evNGS) test was performed. Identification of FGFR2 rearrangements in the screening population from the pivotal FIGHT-202 study (NCT02924376) was compared with F1CDx. The reproducibility and repeatability of F1CDx were 90% to 100%. Adjusted positive, negative, and overall percentage agreements were 87.1%, 99.6%, and 98.3%, respectively, between F1CDx and evNGS. Compared with evNGS, F1CDx had a positive predictive value of 96.2% and a negative predictive value of 98.5%. The positive percentage agreement, negative percentage agreement, overall percentage agreement, positive predictive value, and negative predictive value were 100% for F1CDx versus the FIbroblast Growth factor receptor inhibitor in oncology and Hematology Trial-202 (FIGHT-202) clinical trial assay. Of 6802 CCA samples interrogated, 9.2% had FGFR2 rearrangements. Cell lines expressing diverse FGFR2 fusions were sensitive to pemigatinib. F1CDx demonstrated sensitivity, reproducibility, and high concordance with clinical utility in identifying patients with FGFR2 rearrangements who may benefit from pemigatinib treatment.
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Affiliation(s)
- Ian M Silverman
- Translational Sciences, Incyte Research Institute, Wilmington, Delaware
| | - Meijuan Li
- Research and Development, Foundation Medicine, Cambridge, Massachusetts
| | | | - Melanie A Krook
- The Ohio State University Comprehensive Cancer Center, Columbus, Ohio
| | - Milind M Javle
- University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Robin K Kelley
- University of California San Francisco, Helen Diller Family Comprehensive Cancer Center, San Francisco, California
| | | | | | - Wei Meng
- Research and Development, Foundation Medicine, Cambridge, Massachusetts
| | - Bahar Yilmazel
- Research and Development, Foundation Medicine, Cambridge, Massachusetts
| | - Coren Milbury
- Research and Development, Foundation Medicine, Cambridge, Massachusetts
| | - Shantanu Shewale
- Research and Development, Foundation Medicine, Cambridge, Massachusetts
| | - Luis Feliz
- Clinical Development, Incyte Biosciences International Sàrl, Morges, Switzerland
| | - Timothy C Burn
- Translational Sciences, Incyte Research Institute, Wilmington, Delaware.
| | - Lee A Albacker
- Research and Development, Foundation Medicine, Cambridge, Massachusetts.
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6
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Silverman IM, Hollebecque A, Friboulet L, Owens S, Newton RC, Zhen H, Féliz L, Zecchetto C, Melisi D, Burn TC. Clinicogenomic Analysis of FGFR2-Rearranged Cholangiocarcinoma Identifies Correlates of Response and Mechanisms of Resistance to Pemigatinib. Cancer Discov 2020; 11:326-339. [PMID: 33218975 DOI: 10.1158/2159-8290.cd-20-0766] [Citation(s) in RCA: 161] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/16/2020] [Accepted: 10/27/2020] [Indexed: 11/16/2022]
Abstract
Pemigatinib, a selective FGFR1-3 inhibitor, has demonstrated antitumor activity in FIGHT-202, a phase II study in patients with cholangiocarcinoma harboring FGFR2 fusions/rearrangements, and has gained regulatory approval in the United States. Eligibility for FIGHT-202 was assessed using genomic profiling; here, these data were utilized to characterize the genomic landscape of cholangiocarcinoma and to uncover unique molecular features of patients harboring FGFR2 rearrangements. The results highlight the high percentage of patients with cholangiocarcinoma harboring potentially actionable genomic alterations and the diversity in gene partners that rearrange with FGFR2. Clinicogenomic analysis of pemigatinib-treated patients identified mechanisms of primary and acquired resistance. Genomic subsets of patients with other potentially actionable FGF/FGFR alterations were also identified. Our study provides a framework for molecularly guided clinical trials and underscores the importance of genomic profiling to enable a deeper understanding of the molecular basis for response and nonresponse to targeted therapy. SIGNIFICANCE: We utilized genomic profiling data from FIGHT-202 to gain insights into the genomic landscape of cholangiocarcinoma, to understand the molecular diversity of patients with FGFR2 fusions or rearrangements, and to interrogate the clinicogenomics of patients treated with pemigatinib. Our study highlights the utility of genomic profiling in clinical trials.This article is highlighted in the In This Issue feature, p. 211.
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Affiliation(s)
| | | | | | | | | | | | - Luis Féliz
- Incyte Biosciences International Sàrl, Morges, Switzerland
| | - Camilla Zecchetto
- Digestive Molecular Clinical Oncology Research Unit, Section of Medical Oncology, Università degli Studi di Verona, Verona, Italy
| | - Davide Melisi
- Digestive Molecular Clinical Oncology Research Unit, Section of Medical Oncology, Università degli Studi di Verona, Verona, Italy
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7
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Oberlick EM, Rees MG, Seashore-Ludlow B, Vazquez F, Nelson GM, Dharia NV, Weir BA, Tsherniak A, Ghandi M, Krill-Burger JM, Meyers RM, Wang X, Montgomery P, Root DE, Bieber JM, Radko S, Cheah JH, Hon CSY, Shamji AF, Clemons PA, Park PJ, Dyer MA, Golub TR, Stegmaier K, Hahn WC, Stewart EA, Schreiber SL, Roberts CWM. Small-Molecule and CRISPR Screening Converge to Reveal Receptor Tyrosine Kinase Dependencies in Pediatric Rhabdoid Tumors. Cell Rep 2020; 28:2331-2344.e8. [PMID: 31461650 DOI: 10.1016/j.celrep.2019.07.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 04/19/2019] [Accepted: 07/08/2019] [Indexed: 02/09/2023] Open
Abstract
Cancer is often seen as a disease of mutations and chromosomal abnormalities. However, some cancers, including pediatric rhabdoid tumors (RTs), lack recurrent alterations targetable by current drugs and need alternative, informed therapeutic options. To nominate potential targets, we performed a high-throughput small-molecule screen complemented by a genome-scale CRISPR-Cas9 gene-knockout screen in a large number of RT and control cell lines. These approaches converged to reveal several receptor tyrosine kinases (RTKs) as therapeutic targets, with RTK inhibition effective in suppressing RT cell growth in vitro and against a xenograft model in vivo. RT cell lines highly express and activate (phosphorylate) different RTKs, creating dependency without mutation or amplification. Downstream of RTK signaling, we identified PTPN11, encoding the pro-growth signaling protein SHP2, as a shared dependency across all RT cell lines. This study demonstrates that large-scale perturbational screening can uncover vulnerabilities in cancers with "quiet" genomes.
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Affiliation(s)
- Elaine M Oberlick
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Biological and Biomedical Sciences Program, Harvard Medical School, Boston, MA 02115, USA; Broad Institute, Cambridge, MA 02142, USA
| | | | - Brinton Seashore-Ludlow
- Broad Institute, Cambridge, MA 02142, USA; Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institute, 171 77 Stockholm, Sweden
| | | | - Geoffrey M Nelson
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA 02115, USA
| | - Neekesh V Dharia
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Broad Institute, Cambridge, MA 02142, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02215, USA; Boston Children's Hospital, Boston, MA 02115, USA
| | | | | | | | | | | | - Xiaofeng Wang
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | | | | | | | - Sandi Radko
- Comprehensive Cancer Center and Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | | | | | | | | | - Peter J Park
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA 02115, USA; Harvard Ludwig Center, Harvard Medical School, Boston, MA 02115, USA
| | - Michael A Dyer
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Todd R Golub
- Broad Institute, Cambridge, MA 02142, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02215, USA; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Kimberly Stegmaier
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Broad Institute, Cambridge, MA 02142, USA; Boston Children's Hospital, Boston, MA 02115, USA
| | - William C Hahn
- Broad Institute, Cambridge, MA 02142, USA; Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Elizabeth A Stewart
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Stuart L Schreiber
- Broad Institute, Cambridge, MA 02142, USA; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Charles W M Roberts
- Comprehensive Cancer Center and Department of Oncology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
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8
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Winterhoff B, Konecny GE. Targeting fibroblast growth factor pathways in endometrial cancer. Curr Probl Cancer 2017; 41:37-47. [DOI: 10.1016/j.currproblcancer.2016.11.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Borad MJ, Champion MD, Egan JB, Liang WS, Fonseca R, Bryce AH, McCullough AE, Barrett MT, Hunt K, Patel MD, Young SW, Collins JM, Silva AC, Condjella RM, Block M, McWilliams RR, Lazaridis KN, Klee EW, Bible KC, Harris P, Oliver GR, Bhavsar JD, Nair AA, Middha S, Asmann Y, Kocher JP, Schahl K, Kipp BR, Barr Fritcher EG, Baker A, Aldrich J, Kurdoglu A, Izatt T, Christoforides A, Cherni I, Nasser S, Reiman R, Phillips L, McDonald J, Adkins J, Mastrian SD, Placek P, Watanabe AT, LoBello J, Han H, Von Hoff D, Craig DW, Stewart AK, Carpten JD. Integrated genomic characterization reveals novel, therapeutically relevant drug targets in FGFR and EGFR pathways in sporadic intrahepatic cholangiocarcinoma. PLoS Genet 2014; 10:e1004135. [PMID: 24550739 PMCID: PMC3923676 DOI: 10.1371/journal.pgen.1004135] [Citation(s) in RCA: 261] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 12/06/2013] [Indexed: 12/18/2022] Open
Abstract
Advanced cholangiocarcinoma continues to harbor a difficult prognosis and therapeutic options have been limited. During the course of a clinical trial of whole genomic sequencing seeking druggable targets, we examined six patients with advanced cholangiocarcinoma. Integrated genome-wide and whole transcriptome sequence analyses were performed on tumors from six patients with advanced, sporadic intrahepatic cholangiocarcinoma (SIC) to identify potential therapeutically actionable events. Among the somatic events captured in our analysis, we uncovered two novel therapeutically relevant genomic contexts that when acted upon, resulted in preliminary evidence of anti-tumor activity. Genome-wide structural analysis of sequence data revealed recurrent translocation events involving the FGFR2 locus in three of six assessed patients. These observations and supporting evidence triggered the use of FGFR inhibitors in these patients. In one example, preliminary anti-tumor activity of pazopanib (in vitro FGFR2 IC50≈350 nM) was noted in a patient with an FGFR2-TACC3 fusion. After progression on pazopanib, the same patient also had stable disease on ponatinib, a pan-FGFR inhibitor (in vitro, FGFR2 IC50≈8 nM). In an independent non-FGFR2 translocation patient, exome and transcriptome analysis revealed an allele specific somatic nonsense mutation (E384X) in ERRFI1, a direct negative regulator of EGFR activation. Rapid and robust disease regression was noted in this ERRFI1 inactivated tumor when treated with erlotinib, an EGFR kinase inhibitor. FGFR2 fusions and ERRFI mutations may represent novel targets in sporadic intrahepatic cholangiocarcinoma and trials should be characterized in larger cohorts of patients with these aberrations. Cholangiocarcinoma is a cancer that affects the bile ducts. Unfortunately, many patients diagnosed with cholangiocarcinoma have disease that cannot be treated with surgery or has spread to other parts of the body, thus severely limiting treatment options. New advances in drug treatment have enabled treatment of these cancers with “targeted therapy” that exploits an error in the normal functioning of a tumor cell, compared to other cells in the body, thus allowing only tumor cells to be killed by the drug. We sought to identify changes in the genetic material of cholangiocarcinoma patient tumors in order to identify potential errors in cellular functioning by utilizing cutting edge genetic sequencing technology. We identified three patient tumors possessing an FGFR2 gene that was aberrantly fused to another gene. Two of these patients were able to receive targeted therapy for FGFR2 with resulting tumor shrinkage. A fourth tumor contained an error in a gene that controls a very important cellular mechanism in cancer, termed epidermal growth factor pathway (EGFR). This patient received therapy targeting this mechanism and also demonstrated response to treatment. Thus, we have been able to utilize cutting edge technology with targeted drug treatment to personalize medical treatment for cancer in cholangiocarcinoma patients.
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Affiliation(s)
- Mitesh J. Borad
- Division of Hematology/Oncology Mayo Clinic, Scottsdale, Arizona, United States of America
- Mayo Clinic Cancer Center, Scottsdale, Arizona, United States of America
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- * E-mail: (MJB); (JDC)
| | - Mia D. Champion
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Jan B. Egan
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Winnie S. Liang
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Rafael Fonseca
- Division of Hematology/Oncology Mayo Clinic, Scottsdale, Arizona, United States of America
- Mayo Clinic Cancer Center, Scottsdale, Arizona, United States of America
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Alan H. Bryce
- Division of Hematology/Oncology Mayo Clinic, Scottsdale, Arizona, United States of America
- Mayo Clinic Cancer Center, Scottsdale, Arizona, United States of America
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Ann E. McCullough
- Department of Pathology, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Michael T. Barrett
- Mayo Clinic Cancer Center, Scottsdale, Arizona, United States of America
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Katherine Hunt
- Division of Hematology/Oncology Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Maitray D. Patel
- Department of Radiology, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Scott W. Young
- Department of Radiology, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Joseph M. Collins
- Department of Radiology, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Alvin C. Silva
- Department of Radiology, Mayo Clinic, Scottsdale, Arizona, United States of America
| | | | - Matthew Block
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Mayo Clinic Cancer Center, Rochester, Minnesota, United States of America
| | - Robert R. McWilliams
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Mayo Clinic Cancer Center, Rochester, Minnesota, United States of America
| | | | - Eric W. Klee
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Keith C. Bible
- Mayo Clinic Cancer Center, Rochester, Minnesota, United States of America
| | - Pamela Harris
- Investigational Drug Branch, National Cancer Institute, Rockville, Maryland, United States of America
| | - Gavin R. Oliver
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Jaysheel D. Bhavsar
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Asha A. Nair
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Sumit Middha
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Yan Asmann
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Jean-Pierre Kocher
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, Arizona, United States of America
| | - Kimberly Schahl
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Benjamin R. Kipp
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Emily G. Barr Fritcher
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Angela Baker
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Jessica Aldrich
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Ahmet Kurdoglu
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Tyler Izatt
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Alexis Christoforides
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Irene Cherni
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Sara Nasser
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Rebecca Reiman
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Lori Phillips
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Jackie McDonald
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Jonathan Adkins
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Stephen D. Mastrian
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Pamela Placek
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Aprill T. Watanabe
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Janine LoBello
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Haiyong Han
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - Daniel Von Hoff
- Mayo Clinic Cancer Center, Scottsdale, Arizona, United States of America
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - David W. Craig
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
| | - A. Keith Stewart
- Division of Hematology/Oncology Mayo Clinic, Scottsdale, Arizona, United States of America
- Mayo Clinic Cancer Center, Scottsdale, Arizona, United States of America
- Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - John D. Carpten
- Translational Genomics Research Institute, Phoenix, Arizona, United States of America
- * E-mail: (MJB); (JDC)
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10
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Abstract
The fibroblast growth factor receptors (FGFRs) regulate important biological processes including cell proliferation and differentiation during development and tissue repair. Over the past decades, numerous pathological conditions and developmental syndromes have emerged as a consequence of deregulation in the FGFRs signaling network. This review aims to provide an overview of FGFR family, their complex signaling pathways in tumorigenesis, and the current development and application of therapeutics targeting the FGFRs signaling for treatment of refractory human cancers.
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Affiliation(s)
- Kai Hung Tiong
- School of Postgraduate Studies and Research, International Medical University, Bukit Jalil, 57000 Kuala Lumpur, Malaysia
| | - Li Yen Mah
- School of Pharmacy, International Medical University, Bukit Jalil, 57000 Kuala Lumpur, Malaysia
- Center for Cancer and Stem Cell Research, International Medical University, 126 Jalan 19/155B, Bukit Jalil, 57000 Kuala Lumpur, Malaysia
| | - Chee-Onn Leong
- School of Pharmacy, International Medical University, Bukit Jalil, 57000 Kuala Lumpur, Malaysia
- Center for Cancer and Stem Cell Research, International Medical University, 126 Jalan 19/155B, Bukit Jalil, 57000 Kuala Lumpur, Malaysia
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11
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Greulich H, Pollock PM. Targeting mutant fibroblast growth factor receptors in cancer. Trends Mol Med 2011; 17:283-92. [PMID: 21367659 DOI: 10.1016/j.molmed.2011.01.012] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Revised: 01/19/2011] [Accepted: 01/24/2011] [Indexed: 12/12/2022]
Abstract
Fibroblast growth factor receptors (FGFRs) play diverse roles in the control of cell proliferation, cell differentiation, angiogenesis and development. Activating the mutations of FGFRs in the germline has long been known to cause a variety of skeletal developmental disorders, but it is only recently that a similar spectrum of somatic FGFR mutations has been associated with human cancers. Many of these somatic mutations are gain-of-function and oncogenic and create dependencies in tumor cell lines harboring such mutations. A combination of knockdown studies and pharmaceutical inhibition in preclinical models has further substantiated genomically altered FGFR as a therapeutic target in cancer, and the oncology community is responding with clinical trials evaluating multikinase inhibitors with anti-FGFR activity and a new generation of specific pan-FGFR inhibitors.
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12
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De-regulated FGF receptors as therapeutic targets in cancer. Pharmacol Ther 2010; 125:105-17. [DOI: 10.1016/j.pharmthera.2009.10.001] [Citation(s) in RCA: 134] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Accepted: 10/06/2009] [Indexed: 12/23/2022]
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13
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Cha JY, Lambert QT, Reuther GW, Der CJ. Involvement of Fibroblast Growth Factor Receptor 2 Isoform Switching in Mammary Oncogenesis. Mol Cancer Res 2008; 6:435-45. [DOI: 10.1158/1541-7786.mcr-07-0187] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Bernard-Pierrot I, Ricol D, Cassidy A, Graham A, Elvin P, Caillault A, Lair S, Broët P, Thiery JP, Radvanyi F. Inhibition of human bladder tumour cell growth by fibroblast growth factor receptor 2b is independent of its kinase activity. Involvement of the carboxy-terminal region of the receptor. Oncogene 2005; 23:9201-11. [PMID: 15516981 DOI: 10.1038/sj.onc.1208150] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The b isoform of fibroblast growth factor receptor 2, FGFR2b/FGFR2-IIIb/Ksam-IIC1/KGFR, a tyrosine kinase receptor, is expressed in a wide variety of epithelia and is downregulated in several human carcinomas including prostate, salivary and urothelial cell carcinomas. FGFR2b has been shown to inhibit growth in tumour cell lines derived from these carcinomas. Here, we investigated the molecular mechanisms underlying the inhibition of human urothelial carcinoma cell growth following FGFR2b expression. Using a nylon DNA array, we analysed the gene expression profile of the T24 bladder tumour cell line, transfected or not with a construct encoding FGFR2b. The expression of FGFR2b in T24 cells decreased insulin-like growth factor (IGF)-II mRNA levels. This decrease was correlated with a decrease in IGF-II secretion and may have been responsible for the observed inhibition of cell growth because the addition of exogenous IGF-II restored growth rates to normal levels. Using SU5402, an inhibitor of FGFR tyrosine kinase activity, and a kinase dead mutant of the receptor, FGFR2b Y659F/Y660F, we also demonstrated that the growth inhibition and decrease in IGF-II secretion induced by FGFR2b did not require tyrosine kinase activity. Finally, we demonstrated the involvement of the distal carboxy-terminal domain of the receptor in decreasing IGF-II expression and inhibiting T24 cell growth, as Ksam-IIC3, a variant of FGFR2b carrying a short carboxy-terminus, neither downregulated IGF-II nor inhibited cell proliferation. Our data suggest that FGFR2b inhibits the growth of bladder carcinoma cells by reducing IGF-II levels via its carboxy-terminal domain, independent of its tyrosine kinase activity.
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15
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Niu XL, Peters KG, Kontos CD. Deletion of the carboxyl terminus of Tie2 enhances kinase activity, signaling, and function. Evidence for an autoinhibitory mechanism. J Biol Chem 2002; 277:31768-73. [PMID: 12082108 DOI: 10.1074/jbc.m203995200] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Tie2 is an endothelial receptor tyrosine kinase that is required for both embryonic vascular development and tumor angiogenesis. There is considerable interest in understanding the mechanisms of Tie2 activation for therapeutic purposes. The recent solution of the Tie2 crystal structure suggests that Tie2 activity is autoinhibited by its carboxyl terminus. Here we investigated the role of the C tail in Tie2 activation, signaling, and function both in vitro and in vivo by deleting the C terminus of Tie2 (Delta CT). Compared to wild type Tie2, in vitro autophosphorylation and kinase activity were significantly enhanced by the Delta CT mutation. In NIH 3T3 cells expressing chimeric Tie2 receptors, both basal and ligand-induced tyrosine phosphorylation were markedly enhanced compared to wild type in several independent clones of Tie2-Delta CT. Moreover, the Delta CT mutation enhanced basal and ligand-dependent activation of Akt and extracellular signal-regulated kinase. Enhanced Akt activation correlated with significant inhibition of staurosporine-induced apoptosis. These findings demonstrate that the Tie2 C tail performs a novel negative regulatory role in Tie2 signaling and function, and they provide important insights into the mechanisms by which the Tie2 kinase is activated.
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Affiliation(s)
- Xi-Lin Niu
- Department of Medicine, Division of Cardiology, Duke University Medical Center, Durham, North Carolina 27710, USA
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16
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Gómez A, Wellbrock C, Gutbrod H, Dimitrijevic N, Schartl M. Ligand-independent dimerization and activation of the oncogenic Xmrk receptor by two mutations in the extracellular domain. J Biol Chem 2001; 276:3333-40. [PMID: 11038352 DOI: 10.1074/jbc.m006574200] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Overexpression of the oncogenic receptor tyrosine kinase ONC-Xmrk is the first step in the development of hereditary malignant melanoma in the fish Xiphophorus. However, overexpression of its proto-oncogene counterpart (INV-Xmrk) is not sufficient for the oncogenic function of the receptor. Compared with INV-Xmrk, the ONC-Xmrk receptor displays 14 amino acid changes, suggesting the presence of activating mutations. To identify such activating mutations, a series of chimeric and mutant receptors were studied. None of the mutations present in the intracellular domain was found to be involved in receptor activation. In the extracellular domain, we found two mutations responsible for activation of the receptor. One is the substitution of a conserved cysteine (C578S) involved in intramolecular disulfide bonding. The other is a glycine to arginine exchange (G359R) in subdomain III. Either mutation leads to constitutive dimer formation and thereby to activation of the ONC-Xmrk receptor. Besides, the presence of these mutations slows down the processing of the Xmrk receptor in the endoplasmic reticulum, which is apparent as an incomplete glycosylation.
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Affiliation(s)
- A Gómez
- Physiological Chemistry I, Biocenter (Theodor Boveri Institute), University of Würzburg, Am Hubland, 97074 Würzburg, Germany
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17
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Tannheimer SL, Rehemtulla A, Ethier SP. Characterization of fibroblast growth factor receptor 2 overexpression in the human breast cancer cell line SUM-52PE. Breast Cancer Res 2000; 2:311-20. [PMID: 11056689 PMCID: PMC13919 DOI: 10.1186/bcr73] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/1999] [Revised: 04/03/2000] [Accepted: 04/17/2000] [Indexed: 11/10/2022] Open
Abstract
The fibroblast growth factor receptor (FGFR)2 gene has been shown to be amplified in 5-10% of breast cancer patients. A breast cancer cell line developed in our laboratory, SUM-52PE, was shown to have a 12-fold amplification of the FGFR2 gene, and FGFR2 message was found to be overexpressed 40-fold in SUM-52PE cells as compared with normal human mammary epithelial (HME) cells. Both human breast cancer (HBC) cell lines and HME cells expressed two FGFR2 isoforms, whereas SUM-52PE cells overexpressed those two isoforms, as well as several unique FGFR2 polypeptides. SUM-52PE cells expressed exclusively FGFR2-IIIb isoforms, which are high-affinity receptors for fibroblast growth factor (FGF)-1 and FGF-7. Differences were identified in the expression of the extracellular Ig-like domains, acid box and carboxyl termini, and several variants not previously reported were isolated from these cells.
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MESH Headings
- Alternative Splicing
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Cell Line
- Cloning, Molecular
- Exons/genetics
- Female
- Fibroblast Growth Factor 1
- Fibroblast Growth Factor 2/metabolism
- Fibroblast Growth Factor 7
- Fibroblast Growth Factors/metabolism
- Gene Amplification
- Gene Expression Regulation, Neoplastic
- Humans
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Protein Isoforms/biosynthesis
- Protein Isoforms/genetics
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Neoplasm/genetics
- RNA, Neoplasm/metabolism
- Receptor Protein-Tyrosine Kinases/biosynthesis
- Receptor Protein-Tyrosine Kinases/genetics
- Receptor, Fibroblast Growth Factor, Type 2
- Receptors, Fibroblast Growth Factor/biosynthesis
- Receptors, Fibroblast Growth Factor/genetics
- Recombinant Fusion Proteins/biosynthesis
- Reverse Transcriptase Polymerase Chain Reaction
- Substrate Specificity
- Transfection
- Tumor Cells, Cultured/metabolism
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Affiliation(s)
- S L Tannheimer
- Department of Radiation Oncology, University of Michigan Comprehensive Cancer Center, Ann Arbor, Michigan, USA
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18
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Ueda T, Sasaki H, Aoyagi K, Narikiyo M, Tsubosa Y, Kuwahara Y, Sakamoto H, Mafune K, Yoshida T, Makuuchi M, Terada M. Novel exons located more than 200 kb downstream of the previously described 3' exon of the K-sam gene for generating activated forms of KGF receptor. Biochem Biophys Res Commun 1999; 265:739-45. [PMID: 10600490 DOI: 10.1006/bbrc.1999.1735] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The K-sam gene was first identified as an amplified gene in the poorly differentiated types, especially in the scirrhous type, of gastric cancers. We have recently found and reported that the carboxyl-terminal exons of K-sam are frequently deleted in the scirrhous type of gastric cancer. The deletion generates preferential expression of at least six novel K-sam-II mRNAs: K-sam-IIH1, -IIH2 and -IIH3/O4, and K-sam-IIO1, -IIO2, and -IIO3, which encode novel proteins lacking the transformation-inhibitory sequence or activated K-sam proteins. In this study, we investigated expression of the previously described K-sam-IIC1 and -IIC3 mRNAs and the novel six K-sam-II mRNAs in 14 gastric cancer cell lines, 7 breast cancer cell lines, and 20 human normal tissues. All the six novel K-sam-II mRNAs were expressed preferentially in the cell lines derived from the scirrhous type of gastric cancers but not in the 7 breast cancer cell lines and the 20 human normal tissues. We further determined the positional relationship of four exons of H1, O1, O2, and O3 out of the six exons of H1, H2, H3/O4, O1, O2, and O3, and found that these four novel K-sam exons were located more than 200 kb downstream of the previously described carboxyl-terminal exon of the K-sam gene. Expression of K-sam-IIH1, -IIO1, and -IIO2 mRNAs encoding activated K-sam products in the scirrhous type of gastric cancer cell lines HSC39, OCUM2M, HSC59, and HSC60 was not due to the deletion of the C1 exon of K-sam.
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MESH Headings
- Amino Acid Sequence
- Base Sequence
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Chromosome Mapping
- DNA Primers/genetics
- Exons
- Female
- Gene Expression
- Humans
- Molecular Sequence Data
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Neoplasm/genetics
- RNA, Neoplasm/metabolism
- Receptor Protein-Tyrosine Kinases/genetics
- Receptor, Fibroblast Growth Factor, Type 2
- Receptors, Fibroblast Growth Factor/genetics
- Receptors, Growth Factor/biosynthesis
- Receptors, Growth Factor/genetics
- Stomach Neoplasms/genetics
- Stomach Neoplasms/metabolism
- Tumor Cells, Cultured
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Affiliation(s)
- T Ueda
- Genetics Division, National Cancer Center Research Institute, 1-1, Tsukiji 5-chome, Chuo-ku, Tokyo, 104-0045, Japan
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19
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Lorenzi MV, Castagnino P, Aaronson DC, Lieb DC, Lee CC, Keck CL, Popescu NC, Miki T. Human FRAG1 encodes a novel membrane-spanning protein that localizes to chromosome 11p15.5, a region of frequent loss of heterozygosity in cancer. Genomics 1999; 62:59-66. [PMID: 10585768 DOI: 10.1006/geno.1999.5980] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have previously identified a chromosomal rearrangement between fibroblast growth factor receptor 2 (FGFR2) and a novel gene, FRAG1, in a rodent model of osteosarcoma. To assess the potential role of FRAG1 in disease further, we have isolated cDNA and genomic clones of human FRAG1. Sequence analysis of the cDNA revealed the presence of an insertion not contained in the original FRAG1 sequence. This insertion in human FRAG1 encoded a region highly homologous to and immediately following the first 55 amino acids of the protein, indicating the presence of a repetitive domain within FRAG1, designated the FRAG1 homology (FH) domain. Analysis of FRAG1 gene structure revealed that the FH domains were encoded by tandem duplicated exons. Database searches identified several transmembrane proteins displaying homology to the FH domain of FRAG1. In addition, hydropathy analysis predicted FRAG1 to encode an integral membrane protein with multiple membrane-spanning segments. FRAG1 mRNA was ubiquitously expressed in human adult tissues and several tumor cell lines at varying levels of abundance. Human FRAG1 was mapped by fluorescence in situ hybridization and radiation hybrid analysis to chromosome 11 at band p15.5, a region implicated in Beckwith-Wiedemann syndrome and a region of frequent loss of heterozygosity in multiple tumor types. These results suggest that FRAG1 may be a useful candidate gene for genetic disorders associated with alterations at 11p15.5.
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Affiliation(s)
- M V Lorenzi
- National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
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20
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Sakaguchi K, Lorenzi MV, Bottaro DP, Miki T. The acidic domain and first immunoglobulin-like loop of fibroblast growth factor receptor 2 modulate downstream signaling through glycosaminoglycan modification. Mol Cell Biol 1999; 19:6754-64. [PMID: 10490614 PMCID: PMC84670 DOI: 10.1128/mcb.19.10.6754] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Fibroblast growth factor receptors (FGFRs) are membrane-spanning tyrosine kinases that have been implicated in a variety of biological processes including mitogenesis, cell migration, development, and differentiation. We identified a unique isoform of FGFR2 expressed as a diffuse band with an unusually large molecular mass. This receptor is modified by glycosaminoglycan at a Ser residue located immediately N terminal to the acidic box, a stretch of acidic amino acids. The acidic box and the glycosaminoglycan modification site are encoded by an alternative exon of the FGFR2 gene. The acidic box appears to play an important role in glycosaminoglycan modification, and the presence of this domain is required for modification by heparan sulfate glycosaminoglycan. Moreover, the presence of the first immunoglobulin-like domain encoded by another alternative exon abrogated the modification. The high-affinity receptor with heparan sulfate modification enhanced receptor autophosphorylation, substrate phosphorylation, and ternary complex factor-independent gene expression. It also sustained mitogen-activated protein kinase activity and increased eventual DNA synthesis, a long-term response to fibroblast growth factor stimulation, at physiological ligand concentrations. We propose a novel regulation mechanism of FGFR2 signal transduction through glycosaminoglycan modification.
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Affiliation(s)
- K Sakaguchi
- Laboratory of Cellular and Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
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21
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Sakaguchi K, Lorenzi MV, Matsushita H, Miki T. Identification of a novel activated form of the keratinocyte growth factor receptor by expression cloning from parathyroid adenoma tissue. Oncogene 1999; 18:5497-505. [PMID: 10523826 DOI: 10.1038/sj.onc.1202947] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Parathyroid adenomas are benign tumors in the parathyroid glands, whose pathogenesis is largely unknown. We utilized an expression cDNA cloning strategy to identify oncogenes activated in parathyroid adenomas. An expression cDNA library was prepared directly from a clinical sample of parathyroid adenoma tissue, transfected into NIH3T3 cells, and foci of morphologically transformed cells were isolated. Following plasmid rescue, we identified cDNAs for the keratinocyte growth factor receptor at a high frequency. Interestingly, approximately half of the clones encoded a variant receptor containing an altered C-terminus. Analysis of the transforming activity of the variant receptor revealed that the altered C-terminus up-regulated the transforming activity in a ligand-independent manner. The higher transforming activity was not accompanied by increase of dimerization or overall autophosphorylation of the receptor. However, tyrosine phosphorylation of downstream receptor substrates, including Shc isoforms and possibly FRS2, are increased in the transfectants expressing the parathyroid tumor-derived receptor. Genomic analysis showed that a previously unidentified exon was used to form the novel isoform. This alternative splicing appears to occur preferentially in parathyroid adenomas.
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MESH Headings
- 3T3 Cells
- Adenoma/genetics
- Amino Acid Sequence
- Animals
- Base Sequence
- Cell Transformation, Neoplastic/genetics
- Cloning, Molecular
- DNA, Complementary/genetics
- Dimerization
- Enzyme Activation
- Gene Library
- Humans
- Hyperparathyroidism/etiology
- Hyperparathyroidism, Secondary/etiology
- Hyperplasia
- Kidney Failure, Chronic/complications
- Mice
- Molecular Sequence Data
- Neoplasm Proteins/chemistry
- Neoplasm Proteins/genetics
- Neoplasm Proteins/metabolism
- Oncogenes
- Parathyroid Glands/pathology
- Parathyroid Neoplasms/genetics
- Phosphorylation
- Protein Isoforms/genetics
- Protein Isoforms/metabolism
- Protein Processing, Post-Translational
- RNA Splicing
- Receptor Protein-Tyrosine Kinases/chemistry
- Receptor Protein-Tyrosine Kinases/genetics
- Receptor Protein-Tyrosine Kinases/metabolism
- Receptor, Fibroblast Growth Factor, Type 2
- Receptors, Fibroblast Growth Factor
- Receptors, Growth Factor/chemistry
- Receptors, Growth Factor/genetics
- Receptors, Growth Factor/metabolism
- Sequence Alignment
- Sequence Homology, Amino Acid
- Transfection
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Affiliation(s)
- K Sakaguchi
- Laboratory of Cellular and Molecular Biology, National Cancer Institute, Building 37 Room 1E24, Bethesda, Maryland, MD 20892-4255, USA
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Lorenzi MV, Castagnino P, Chen Q, Hori Y, Miki T. Distinct expression patterns and transforming properties of multiple isoforms of Ost, an exchange factor for RhoA and Cdc42. Oncogene 1999; 18:4742-55. [PMID: 10467422 DOI: 10.1038/sj.onc.1202851] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A search for transforming genes expressed in brain led to the identification of a novel isoform of Ost, an exchange factor for RhoA and Cdc42. In addition to the Dbl-homology (DH) and pleckstrin-homology (PH) domains identified in the original Ost, this isoform contained a SH3 domain and a novel HIV-Tat related (TR) domain. The presence or absence of these domains in Ost defined multiple isoforms of the protein. RT - PCR and in situ hybridization analysis revealed that these isoforms were generated by tissue-specific and developmentally restricted alternative splicing events. Whereas deletion of the N-terminus activated the transforming properties of Ost, the presence of the SH3 domain reduced the transforming activity of the protein. This inhibition was relieved by the presence of a TR domain, which contained a potential SH3 ligand sequence. The transforming activity of all Ost isoforms was inhibited by dominant negative forms of the Rho family proteins. Expression of Ost isoforms potently induced the formation of actin stress fibers and filopodia as well as JNK activity and AP1- and SRF-regulated transcriptional pathways. Ost transfectants also displayed elevated levels of cyclins A and D1, suggesting that the de-regulation of these cyclins is linked to Ost-mediated transformation.
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Affiliation(s)
- M V Lorenzi
- Laboratory of Cellular and Molecular Biology, National Cancer Institute, Building 37 Room 1E24, 37 Convent Dr. MSC 4255, Bethesda, Maryland 20892, USA
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23
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The Role of Fibroblast Growth Factors in Breast Cancer Pathogenesis and Progression. Breast Cancer 1999. [DOI: 10.1007/978-1-59259-456-6_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Zalecki P, Radzikowski C, Olsnes S, Wiedłocha A. Modulation by interleukin-2 of cellular response to fibroblast growth factor-1 in F69-3 fibrosarcoma cells. Exp Cell Res 1998; 244:61-70. [PMID: 9770349 DOI: 10.1006/excr.1998.4187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
FGF-1 stimulated DNA synthesis and induced expression of IL-2 receptors in the murine fibrosarcoma cell line, F69-3. Concomitant treatment with IL-2 abolished the stimulation of DNA synthesis, but not binding of FGF-1 to the FGF-receptors or subsequent endocytosis of the bound growth factor. Also, it did not inhibit activation of the FGF-receptor tyrosine kinase or stimulation of the downstream effector, MAP kinase. Treatment with IL-2 prevented transport of FGF-1 to the nuclear fraction in a time- and dose-dependent manner that parallelled the inhibition of FGF-1 stimulated DNA synthesis. The data support our earlier finding that transport of FGF-1 to the nucleus is an important event in the mechanism of stimulation of DNA synthesis induced by the growth factor, and they demonstrate that treatment with a cytokine can modulate the cellular response to FGF-1.
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Affiliation(s)
- P Zalecki
- Institute for Cancer Research, The Norwegian Radium Hospital, Montebello, 0310 Oslo, Norway
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25
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Szebenyi G, Fallon JF. Fibroblast growth factors as multifunctional signaling factors. INTERNATIONAL REVIEW OF CYTOLOGY 1998; 185:45-106. [PMID: 9750265 DOI: 10.1016/s0074-7696(08)60149-7] [Citation(s) in RCA: 356] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The fibroblast growth factor (FGF) family consists of at least 15 structurally related polypeptide growth factors. Their expression is controlled at the levels of transcription, mRNA stability, and translation. The bioavailability of FGFs is further modulated by posttranslational processing and regulated protein trafficking. FGFs bind to receptor tyrosine kinases (FGFRs), heparan sulfate proteoglycans (HSPG), and a cysteine-rich FGF receptor (CFR). FGFRs are required for most biological activities of FGFs. HSPGs alter FGF-FGFR interactions and CFR participates in FGF intracellular transport. FGF signaling pathways are intricate and are intertwined with insulin-like growth factor, transforming growth factor-beta, bone morphogenetic protein, and vertebrate homologs of Drosophila wingless activated pathways. FGFs are major regulators of embryonic development: They influence the formation of the primary body axis, neural axis, limbs, and other structures. The activities of FGFs depend on their coordination of fundamental cellular functions, such as survival, replication, differentiation, adhesion, and motility, through effects on gene expression and the cytoskeleton.
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Affiliation(s)
- G Szebenyi
- Anatomy Department, University of Wisconsin, Madison 53706, USA
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