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Pavlakis E, Neumann M, Merle N, Wieboldt R, Wanzel M, Ponath V, Pogge von Strandmann E, Elmshäuser S, Stiewe T. Mutant p53-ENTPD5 control of the calnexin/calreticulin cycle: a druggable target for inhibiting integrin-α5-driven metastasis. J Exp Clin Cancer Res 2023; 42:203. [PMID: 37563605 PMCID: PMC10413714 DOI: 10.1186/s13046-023-02785-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 07/28/2023] [Indexed: 08/12/2023] Open
Abstract
BACKGROUND TP53, encoding the tumor suppressor p53, is frequently mutated in various cancers, producing mutant p53 proteins (mutp53) which can exhibit neomorphic, gain-of-function properties. The latter transform p53 into an oncoprotein that promotes metastatic tumor progression via downstream effectors such as ENTPD5, an endoplasmic reticulum UDPase involved in the calnexin/calreticulin cycle of N-glycoprotein biosynthesis. Elucidating the mechanisms underlying the pro-metastatic functions of the mutp53-ENTPD5 axis is crucial for developing targeted therapies for aggressive metastatic cancer. METHODS We analyzed pancreatic, lung, and breast adenocarcinoma cells with p53 missense mutations to study the impact of mutp53 and ENTPD5 on the N-glycoproteins integrin-α5 (ITGA5) and integrin-β1 (ITGB1), which heterodimerize to form the key fibronectin receptor. We assessed the role of the mutp53-ENTPD5 axis in integrin-dependent tumor-stroma interactions and tumor cell motility using adhesion, migration, and invasion assays, identifying and validating therapeutic intervention targets. We employed an orthotopic xenograft model of pancreatic ductal adenocarcinoma to examine in vivo targeting of mutp53-ENTPD5-mediated ITGA5 regulation for cancer therapy. RESULTS Mutp53 depletion diminished ITGA5 and ITGB1 expression and impaired tumor cell adhesion, migration, and invasion, rescued by ENTPD5. The mutp53-ENTPD5 axis maintained ITGA5 expression and function via the calnexin/calreticulin cycle. Targeting this axis using ITGA5-blocking antibodies, α-glucosidase inhibitors, or pharmacological degradation of mutp53 by HSP90 inhibitors, such as Ganetespib, effectively inhibited ITGA5-mediated cancer cell motility in vitro. In the orthotopic xenograft model, Ganetespib reduced ITGA5 expression and metastasis in an ENTPD5-dependent manner. CONCLUSIONS The mutp53-ENTPD5 axis fosters ITGA5 and ITGB1 expression and tumor cell motility through the calnexin/calreticulin cycle, contributing to cancer metastasis. ITGA5-blocking antibodies or α-glucosidase inhibitors target this axis and represent potential therapeutic options worth exploring in preclinical models. The pharmacologic degradation of mutp53 by HSP90 inhibitors effectively blocks ENTPD5-ITGA5-mediated cancer cell motility and metastasis in vivo, warranting further clinical evaluation in p53-mutant cancers. This research underscores the significance of understanding the complex interplay between mutp53, ENTPD5, and the calnexin/calreticulin cycle in integrin-mediated metastatic tumor progression, offering valuable insights for the development of potential therapeutic strategies.
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Affiliation(s)
- Evangelos Pavlakis
- Institute of Molecular Oncology, Philipps-University, 35043, Marburg, Germany
| | - Michelle Neumann
- Institute of Molecular Oncology, Philipps-University, 35043, Marburg, Germany
| | - Nastasja Merle
- Institute of Molecular Oncology, Philipps-University, 35043, Marburg, Germany
| | - Ronja Wieboldt
- Institute of Molecular Oncology, Philipps-University, 35043, Marburg, Germany
| | - Michael Wanzel
- Institute of Molecular Oncology, Philipps-University, 35043, Marburg, Germany
- Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Marburg, 35043, Germany
| | - Viviane Ponath
- Institute for Tumor Immunology, Philipps-University, 35043, Marburg, Germany
| | | | - Sabrina Elmshäuser
- Institute of Molecular Oncology, Philipps-University, 35043, Marburg, Germany
| | - Thorsten Stiewe
- Institute of Molecular Oncology, Philipps-University, 35043, Marburg, Germany.
- Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Marburg, 35043, Germany.
- Genomics Core Facility, Philipps-University, 35043, Marburg, Germany.
- Institute for Lung Health (ILH), Justus Liebig University, 35392, Giessen, Germany.
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Sasaki K, Takahashi S, Ouchi K, Otsuki Y, Wakayama S, Ishioka C. Different impacts of TP53 mutations on cell cycle-related gene expression among cancer types. Sci Rep 2023; 13:4868. [PMID: 36964217 PMCID: PMC10039000 DOI: 10.1038/s41598-023-32092-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/22/2023] [Indexed: 03/26/2023] Open
Abstract
Functional properties caused by TP53 mutations are involved in cancer development and progression. Although most of the mutations lose normal p53 functions, some of them, gain-of-function (GOF) mutations, exhibiting novel oncogenic functions. No reports have analyzed the impact of TP53 mutations on the gene expression profile of the p53 signaling pathway across cancer types. This study is a cross-cancer type analysis of the effects of TP53 mutations on gene expression. A hierarchical cluster analysis of the expression profile of the p53 signaling pathway classified 21 cancer types into two clusters (A1 and A2). Changes in the expression of cell cycle-related genes and MKI67 by TP53 mutations were greater in cluster A1 than in cluster A2. There was no distinct difference in the effects between GOF and non-GOF mutations on the gene expression profile of the p53 signaling pathway.
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Affiliation(s)
- Keiju Sasaki
- Department of Clinical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
- Department of Medical Oncology, Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Shin Takahashi
- Department of Clinical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
| | - Kota Ouchi
- Department of Clinical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
- Department of Medical Oncology, Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Yasufumi Otsuki
- Department of Clinical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
- Department of Medical Oncology, Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Shonosuke Wakayama
- Department of Clinical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
- Department of Medical Oncology, Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Chikashi Ishioka
- Department of Clinical Oncology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan.
- Department of Medical Oncology, Tohoku University Hospital, Sendai, Miyagi, Japan.
- Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan.
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Phosphorylation-mediated interaction between human E26 transcription factor 1 and specific protein 1 is required for tumor cell migration. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1441-1452. [PMID: 36305724 PMCID: PMC9828152 DOI: 10.3724/abbs.2022148] [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] [Indexed: 01/07/2023] Open
Abstract
Transcription factors, human E26 transcription factor 1 (Ets1) and specific protein 1 (Sp1), are known to induce gene expression in tumorigenicity. High Ets1 expression is often associated with colorectal tumorigenesis. In this study, we discover that metastasis and clone formation in SW480 cells mainly depend on the direct interaction between Ets1 and Sp1 instead of high Ets1 expression. The interaction domains are further addressed to be the segment at Sp1(626-708) and the segment at Ets1(244-331). In addition, the phosphorylation inhibition of Ets1 at Tyr283 by either downregulation of Src kinase or Src family inhibitor treatment decreases the interaction between Sp1 and Ets1 and suppresses SW480 migration. Either administration or overexpression of the peptides harboring the interaction segment strongly inhibits the colony formation and migration of SW480 cells. Our findings suggest that the interaction between Ets1 and Sp1 rather than Ets1 alone promotes transformation in SW480 cells and provide new insight into the Ets1 and Sp1 interaction as an antitumour target in SW480 cells.
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Contribution of p53 in sensitivity to EGFR tyrosine kinase inhibitors in non-small cell lung cancer. Sci Rep 2021; 11:19667. [PMID: 34608255 PMCID: PMC8490392 DOI: 10.1038/s41598-021-99267-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 09/13/2021] [Indexed: 11/08/2022] Open
Abstract
The emergence of resistance to epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) in non-small cell lung cancer (NSCLC) with activating EGFR mutations is a major hindrance to treatment. We investigated the effects of p53 in primary sensitivity and acquired resistance to EGFR-TKIs in NSCLC cells. Changes in sensitivity to EGFR-TKIs were determined using p53 overexpression or knockdown in cells with activating EGFR mutations. We investigated EMT-related molecules, morphologic changes, and AXL induction to elucidate mechanisms of acquired resistance to EGFR-TKIs according to p53 status. Changes in p53 status affected primary sensitivity as well as acquired resistance to EGFR-TKIs according to cell type. Firstly, p53 silencing did not affect primary and acquired resistance to EGFR-TKIs in PC-9 cells, but it led to primary resistance to EGFR-TKIs through AXL induction in HCC827 cells. Secondly, p53 silencing in H1975 cells enhanced the sensitivity to osimertinib through the emergence of mesenchymal-to-epithelial transition, and the emergence of acquired resistance to osimertinib in p53 knockout cells was much slower than in H1975 cells. Furthermore, two cell lines (H1975 and H1975/p53KO) demonstrated the different mechanisms of acquired resistance to osimertinib. Lastly, the introduction of mutant p53-R273H induced the epithelial-to-mesenchymal transition and exerted resistance to EGFR-TKIs in cells with activating EGFR mutations. These findings indicate that p53 mutations can be associated with primary or acquired resistance to EGFR-TKIs. Thus, the status or mutations of p53 may be considered as routes to improving the therapeutic effects of EGFR-TKIs in NSCLC.
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Iommelli F, De Rosa V, Terlizzi C, Fonti R, Camerlingo R, Stoppelli MP, Stewart CA, Byers LA, Piwnica-Worms D, Del Vecchio S. A Reversible Shift of Driver Dependence from EGFR to Notch1 in Non-Small Cell Lung Cancer as a Cause of Resistance to Tyrosine Kinase Inhibitors. Cancers (Basel) 2021; 13:cancers13092022. [PMID: 33922104 PMCID: PMC8122511 DOI: 10.3390/cancers13092022] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 04/19/2021] [Indexed: 11/16/2022] Open
Abstract
Notch1 plays a key role in epithelial-mesenchymal transition (EMT) and in the maintenance of cancer stem cells. In the present study we tested whether high levels of activated Notch1 in oncogene-driven NSCLC can induce a reversible shift of driver dependence from EGFR to Notch1, and thus causing resistance to EGFR inhibitors. Adherent cells (parental) and tumor spheres (TS) from NSCLC H1975 cells and patient-derived CD133-positive cells were tested for EGFR and Notch1 signaling cascade. The Notch1-dependent modulation of EGFR, NCID, Hes1, p53, and Sp1 were then analyzed in parental cells by binding assays with a Notch1 agonist, DLL4. TS were more resistant than parental cells to EGFR inhibitors. A strong upregulation of Notch1 and a concomitant downregulation of EGFR were observed in TS compared to parental cells. Parental cell exposure to DLL4 showed a dose-dependent decrease of EGFR and a simultaneous increase of NCID, Hes1, p53, and Sp1, along with the dislocation of Sp1 from the EGFR promoter. Furthermore, an enhanced interaction between p53 and Sp1 was observed in TS. In NSCLC cells, high levels of active Notch1 can promote a reversible shift of driver dependence from EGFR to Notch1, leading to resistance to EGFR inhibitors.
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Affiliation(s)
- Francesca Iommelli
- Institute of Biostructures and Bioimaging, National Research Council, 80145 Naples, Italy; (F.I.); (V.D.R.); (R.F.)
| | - Viviana De Rosa
- Institute of Biostructures and Bioimaging, National Research Council, 80145 Naples, Italy; (F.I.); (V.D.R.); (R.F.)
| | - Cristina Terlizzi
- Department of Advanced Biomedical Sciences, University “Federico II”, 80131 Naples, Italy;
| | - Rosa Fonti
- Institute of Biostructures and Bioimaging, National Research Council, 80145 Naples, Italy; (F.I.); (V.D.R.); (R.F.)
| | - Rosa Camerlingo
- Department of Cell Biology and Biotherapy, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, 80131 Naples, Italy;
| | - Maria Patrizia Stoppelli
- Institute of Genetics and Biophysics, “Adriano Buzzati Traverso” National Research Council, 80131 Naples, Italy;
| | - C. Allison Stewart
- Department of Thoracic Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (C.A.S.); (L.A.B.)
| | - Lauren Averett Byers
- Department of Thoracic Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (C.A.S.); (L.A.B.)
| | - David Piwnica-Worms
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Silvana Del Vecchio
- Department of Advanced Biomedical Sciences, University “Federico II”, 80131 Naples, Italy;
- Correspondence: ; Tel.: +39-081-7463307; Fax: +39-081-5457081
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Ferrara MG, Martini M, D'Argento E, Forcella C, Vita E, Di Noia V, Sperduti I, Bilotta M, Ribelli M, Damiano P, Cannella A, Stefani A, Pilotto S, Carbone C, Piro G, Milella M, Tortora G, Bria E. PTEN Loss as a Predictor of Tumor Heterogeneity and Poor Prognosis in Patients With EGFR-mutant Advanced Non-small-cell Lung Cancer Receiving Tyrosine Kinase Inhibitors. Clin Lung Cancer 2021; 22:351-360. [PMID: 33558194 DOI: 10.1016/j.cllc.2020.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 10/17/2020] [Accepted: 12/12/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND Rapid disease progression of patients with advanced epidermal growth factor receptor (EGFR)-mutant non-small-cell lung cancer (NSCLC) has been recently associated with tumor heterogeneity, which may be mirrored by coexisting concomitant alterations. The aim of this analysis was to investigate the correlation between loss of function of PTEN and the efficacy of tyrosine kinase inhibitors in this population. MATERIALS AND METHODS Archival tumor blocks from patients with EGFR-mutant NSCLC who were administered upfront tyrosine kinase inhibitors were retrospectively collected. The status of 4 genes (PTEN, TP53, c-MET, IGFR) was evaluated by immunohistochemistry, and it was correlated with overall response rate, overall survival (OS), and progression-free survival (PFS). RESULTS Fifty-one patients were included. In multivariate analysis, PTEN loss (hazard ratio [HR], 3.46; 95% confidence interval [CI], 1.56-7.66; P = .002), IGFR overexpression (HR, 2.22; 95% CI, 1.03-4.77; P = .04), liver metastases (HR, 3.55; 95% CI, 1.46-8.65; P = .005), and Eastern Cooperative Oncology Group performance status (ECOG PS) ≥ 1 (HR, 2.57; 95% CI, 1.04-6.34; P = .04) were significantly associated with shorter PFS. Patients with PTEN loss had a median PFS of 6 months (2-year PFS, 11.6%), whereas patients without PTEN loss had a median PFS of 18 months (2-year PFS, 43.6%) (log-rank P < .005). In the multivariate analysis, PTEN loss (HR, 5.92; 95% CI, 2.37-14.81; P < .005), liver metastases (HR, 2.63; 95% CI, 1.06-6.51; P = .037), and ECOG PS ≥ 1 (HR, 2.80; 95% CI, 1.15-6.81; P = .024) were significantly associated with shorter OS. Patients with PTEN loss had a median OS of 6 months (2-year OS, 12.2%), whereas in patients without PTEN loss, OS was not reached (2-year OS, 63.9%) (log-rank P < .0005). CONCLUSIONS A low-cost and reproducible immunohistochemistry assay for PTEN loss analysis represents a potential tool for identifying tumor heterogeneity in patients with advanced EGFR-mutant NSCLC.
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Affiliation(s)
- Miriam Grazia Ferrara
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Maurizio Martini
- Istituto di Anatomia Patologica, Università Cattolica Del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
| | - Ettore D'Argento
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Chiara Forcella
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
| | - Emanuele Vita
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Vincenzo Di Noia
- Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy; Oncologia Medica, Humanitas Gavazzeni, Bergamo, Italy
| | - Isabella Sperduti
- Biostatistics, Regina Elena National Cancer Institute IRCCS, Rome, Italy
| | - Mirna Bilotta
- Istituto di Anatomia Patologica, Università Cattolica Del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
| | - Marta Ribelli
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Paola Damiano
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Antonella Cannella
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Alessio Stefani
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Sara Pilotto
- U.O.C. Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Carmine Carbone
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Geny Piro
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Michele Milella
- U.O.C. Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Giampaolo Tortora
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Emilio Bria
- Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy; Medical Oncology, Università Cattolica del Sacro Cuore, Roma, Italy.
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The oncogenicity of tumor-derived mutant p53 is enhanced by the recruitment of PLK3. Nat Commun 2021; 12:704. [PMID: 33514736 PMCID: PMC7846773 DOI: 10.1038/s41467-021-20928-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 12/21/2020] [Indexed: 01/10/2023] Open
Abstract
p53 mutations with single amino acid changes in cancer often lead to dominant oncogenic changes. Here, we have developed a mouse model of gain-of-function (GOF) p53-driven lung cancer utilizing conditionally active LSL p53-R172H and LSL K-Ras-G12D knock-in alleles that can be activated by Cre in lung club cells. Mutation of the p53 transactivation domain (TAD) (p53-L25Q/W26S/R172H) eliminating significant transactivation activity resulted in loss of tumorigenicity, demonstrating that transactivation mediated by or dependent on TAD is required for oncogenicity by GOF p53. GOF p53 TAD mutations significantly reduce phosphorylation of nearby p53 serine 20 (S20), which is a target for PLK3 phosphorylation. Knocking out PLK3 attenuated S20 phosphorylation along with transactivation and oncogenicity by GOF p53, indicating that GOF p53 exploits PLK3 to trigger its transactivation capability and exert oncogenic functions. Our data show a mechanistic involvement of PLK3 in mutant p53 pathway of oncogenesis. The mechanisms of how gain-of-function (GOF) mutant p53 drives carcinogenesis are unclear. Here, the authors show that a GOF mutant p53 requires its transactivation capability to induce mouse lung tumors and this is dependent on PLK3 phosphorylation of GOF mutant p53.
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Oduah EI, Grossman SR. Harnessing the vulnerabilities of p53 mutants in lung cancer - Focusing on the proteasome: a new trick for an old foe? Cancer Biol Ther 2020; 21:293-302. [PMID: 32041464 PMCID: PMC7515531 DOI: 10.1080/15384047.2019.1702403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 11/02/2019] [Accepted: 12/01/2019] [Indexed: 12/25/2022] Open
Abstract
Gain-of-function (GOF) p53 mutations occur commonly in human cancer and lead to both loss of p53 tumor suppressor function and acquisition of aggressive cancer phenotypes. The oncogenicity of GOF mutant p53 is highly related to its abnormal protein stability relative to wild type p53, and overall stoichiometric excess. We provide an overview of the mechanisms of dysfunction and abnormal stability of GOF p53 specifically in lung cancer, the leading cause of cancer-related mortality, where, depending on histologic subtype, 33-90% of tumors exhibit GOF p53 mutations. As a distinguishing feature and oncogenic mechanism in lung and many other cancers, GOF p53 represents an appealing and cancer-specific therapeutic target. We review preclinical evidence demonstrating paradoxical depletion of GOF p53 by proteasome inhibitors, as well as preclinical and clinical studies of proteasome inhibition in lung cancer. Finally, we provide a rationale for a reexamination of proteasome inhibition in lung cancer, focusing on tumors expressing GOF p53 alleles.
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Affiliation(s)
- Eziafa I. Oduah
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Steven R. Grossman
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA
- VCU Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA
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Pavlakis E, Stiewe T. p53's Extended Reach: The Mutant p53 Secretome. Biomolecules 2020; 10:biom10020307. [PMID: 32075247 PMCID: PMC7072272 DOI: 10.3390/biom10020307] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 02/10/2020] [Accepted: 02/12/2020] [Indexed: 02/08/2023] Open
Abstract
p53 suppresses tumorigenesis by activating a plethora of effector pathways. While most of these operate primarily inside of cells to limit proliferation and survival of incipient cancer cells, many extend to the extracellular space. In particular, p53 controls expression and secretion of numerous extracellular factors that are either soluble or contained within extracellular vesicles such as exosomes. As part of the cellular secretome, they execute key roles in cell-cell communication and extracellular matrix remodeling. Mutations in the p53-encoding TP53 gene are the most frequent genetic alterations in cancer cells, and therefore, have profound impact on the composition of the tumor cell secretome. In this review, we discuss how the loss or dominant-negative inhibition of wild-type p53 in concert with a gain of neomorphic properties observed for many mutant p53 proteins, shapes a tumor cell secretome that creates a supportive microenvironment at the primary tumor site and primes niches in distant organs for future metastatic colonization.
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10
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Mizuguchi A, Yamashita S, Yokogami K, Morishita K, Takeshima H. Ecotropic viral integration site 1 regulates EGFR transcription in glioblastoma cells. J Neurooncol 2019; 145:223-231. [PMID: 31617054 PMCID: PMC6856030 DOI: 10.1007/s11060-019-03310-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 10/03/2019] [Indexed: 12/14/2022]
Abstract
Purpose Ecotropic viral integration site-1 (EVI1) is a transcription factor that contributes to the unfavorable prognosis of leukemia, some epithelial cancers, and glial tumors. However, the biological function of EVI1 in glioblastoma multiforme (GBM) remains unclear. Based on microarray experiments, EVI1 has been reported to regulate epidermal growth factor receptor (EGFR) transcription. Signal transduction via EGFR plays an essential role in glioblastoma. Therefore, we performed this study to clarify the importance of EVI1 in GBM by focusing on the regulatory mechanism between EVI1 and EGFR transcription. Methods We performed immunohistochemical staining and analyzed the EVI1-expression in glioma tissue. To determine the relationship between EVI1 and EGFR, we induced siRNA-mediated knockdown of EVI1 in GBM cell lines. To investigate the region that was essential for the EVI1 regulation of EGFR expression, we conducted promoter reporter assays. We performed WST-8 assay to investigate whether EVI1 affected on the proliferation of GBM cells or not. Results It was observed that 22% of GBM tissues had over 33% of tumor cells expressing EVI1, whereas no lower-grade glioma tissue had over 33% by immunohistochemistry. In A172 and YKG1 cells, the expression levels of EGFR and EVI1 correlated. Analysis of the EGFR promoter region revealed that the EGFR promoter (from − 377 to − 266 bp) was essential for the EVI regulation of EGFR expression. We showed that EVI1 influenced the proliferation of A172 and YKG1 cells. Conclusion This is the first study reporting the regulation of EGFR transcription by EVI1 in GBM cells. Electronic supplementary material The online version of this article (10.1007/s11060-019-03310-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Asako Mizuguchi
- Department of Neurosurgery, Faculty of Medicine, University of Miyazaki, 5200, Kiyotake-cho, Kihara, Miyazaki-shi, Miyazaki, 889-1601, Japan.
| | - Shinji Yamashita
- Department of Neurosurgery, Faculty of Medicine, University of Miyazaki, 5200, Kiyotake-cho, Kihara, Miyazaki-shi, Miyazaki, 889-1601, Japan
| | - Kiyotaka Yokogami
- Department of Neurosurgery, Faculty of Medicine, University of Miyazaki, 5200, Kiyotake-cho, Kihara, Miyazaki-shi, Miyazaki, 889-1601, Japan
| | - Kazuhiro Morishita
- Department of Tumor and Cellular Biochemistry, Faculty of Medicine, University of Miyazaki, 5200, Kiyotake-cho, Kihara, Miyazaki-shi, Miyazaki, 889-1601, Japan
| | - Hideo Takeshima
- Department of Neurosurgery, Faculty of Medicine, University of Miyazaki, 5200, Kiyotake-cho, Kihara, Miyazaki-shi, Miyazaki, 889-1601, Japan
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Pfister NT, Prives C. Chromatin dysregulation by mutant p53. Oncotarget 2018; 7:29875-6. [PMID: 27127877 PMCID: PMC5058647 DOI: 10.18632/oncotarget.7922] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 03/04/2016] [Indexed: 11/25/2022] Open
Affiliation(s)
- Neil T Pfister
- Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Carol Prives
- Department of Biological Sciences, Columbia University, New York, NY, USA
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Stiewe T, Haran TE. How mutations shape p53 interactions with the genome to promote tumorigenesis and drug resistance. Drug Resist Updat 2018; 38:27-43. [PMID: 29857816 DOI: 10.1016/j.drup.2018.05.001] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/27/2018] [Accepted: 05/03/2018] [Indexed: 12/31/2022]
Abstract
The tumor suppressive transcription factor p53 regulates a wide array of cellular processes that confer upon cells an essential protection against cancer development. Wild-type p53 regulates gene expression by directly binding to DNA in a sequence-specific manner. p53 missense mutations are the most common mutations in malignant cells and can be regarded as synonymous with anticancer drug resistance and poor prognosis. The current review provides an overview of how the extraordinary variety of more than 2000 different mutant p53 proteins, known as the p53 mutome, affect the interaction of p53 with DNA. We discuss how the classification of p53 mutations to loss of function (LOF), gain of function (GOF), and dominant-negative (DN) inhibition of a remaining wild-type allele, hides a complex p53 mutation spectrum that depends on the distinctive nature of each mutant protein, requiring different therapeutic strategies for each mutant p53 protein. We propose to regard the different mutant p53 categories as continuous variables, that may not be independent of each other. In particular, we suggest here to consider GOF mutations as a special subset of LOF mutations, especially when mutant p53 binds to DNA through cooperation with other transcription factors, and we present a model for GOF mechanism that consolidates many observations on the GOF phenomenon. We review how novel mutant p53 targeting approaches aim to restore a wild-type-like DNA interaction and to overcome resistance to cancer therapy.
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Affiliation(s)
- Thorsten Stiewe
- Institute of Molecular Oncology, Philipps-University, 35037 Marburg, Germany.
| | - Tali E Haran
- Department of Biology, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel.
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13
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Wu F, Shi X, Zhang R, Tian Y, Wang X, Wei C, Li D, Li X, Kong X, Liu Y, Guo W, Guo Y, Zhou H. Regulation of proliferation and cell cycle by protein regulator of cytokinesis 1 in oral squamous cell carcinoma. Cell Death Dis 2018; 9:564. [PMID: 29752448 PMCID: PMC5948203 DOI: 10.1038/s41419-018-0618-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 04/24/2018] [Indexed: 02/05/2023]
Abstract
Protein regulator of cytokinesis 1 (PRC1), a microtubule-associated protein, has emerged as a critical regulator of proliferation and apoptosis, acting predominantly in numerous tumors. However, its function in oral squamous cell carcinoma (OSCC) is still unknown. To establish the roles of PRC1 in OSCC, 95 oral clinical samples (54 OSCC, 24 oral leukoplakia [OLK], and 17 normal oral mucosa) and seven oral cell lines (6 OSCC and 1 normal oral cell lines) were analyzed using a series of molecular and genomic assays both in vivo and in vitro were conducted in this study. Herein, we provide evidence demonstrating that expression of PRC1 closely correlates with the degree of epithelial dysplasia in OLK (n = 24) (p < 0.001), and the poor differentiation, large tumor volume, lymph node metastasis, and high-clinical stage in OSCC (n = 54) (p < 0.05), illustrating that PRC1 has a promotive influence on tumor progression in OSCC. Simultaneously, we observed that PRC1 knockdown in OSCC cell lines caused G2/M phase arrest (p < 0.05), inhibited cell proliferation in vitro (p < 0.05) and tumor growth in vivo (p < 0.001). Furthermore, the effects of PRC1 on the regulation of proliferation and cell cycle transition in OSCC samples were mediated by p53. The p53/PRC1/EGFR signaling pathway was found to be implicated in the tumor progression of OSCC. Based on our data, we demonstrate that PRC1 is a key factor in regulating proliferation and the cell cycle, pointing to the potential benefits of PRC1-targeted therapies for OSCC.
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Affiliation(s)
- Fanglong Wu
- State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Xueke Shi
- State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Rui Zhang
- Department of Preventive Dentistry, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Yuan Tian
- State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Xiangjian Wang
- State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Changlei Wei
- State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Duo Li
- State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Xiaoyu Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Xiangli Kong
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Yurong Liu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China
| | - Weihua Guo
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China.
| | - Yiqing Guo
- State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China. .,Department of Stomatology, The Affiliated Hospital of Qingdao University, 266003, Qingdao, Shandong, China.
| | - Hongmei Zhou
- State Key Laboratory of Oral Diseases, Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University, 610041, Chengdu, Sichuan, China.
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14
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Pathak S, Singh SRK, Katiyar V, Mcdunn S. Epidermal Growth Factor Receptor-mutated Lung Cancer as the Initial Manifestation of Germline TP53 Mutation Associated Cancer. Cureus 2018; 10:e2395. [PMID: 29854570 PMCID: PMC5976273 DOI: 10.7759/cureus.2395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Epidermal growth factor receptor (EGFR) mutation-driven lung cancer is a rare occurrence in patients with Li-Fraumeni syndrome (LFS) characterized by germline mutations in the tumor protein 53 (TP53) gene. Here we describe a case of primary EGFR mutation-driven lung adenocarcinoma in a young woman with LFS. There is only one other reported case with such presentation. We review the interactions between the TP53 gene and EGFR pathways facilitating lung carcinogenesis. We also review other cases with similar presentations described in the literature and the response to tyrosine kinase inhibitors (TKI) in this rare patient population.
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Affiliation(s)
- Surabhi Pathak
- Department of Hematology-Oncology, John H Stroger Jr. Hospital of Cook County, Chicago, USA
| | - Sunny R K Singh
- Department of Internal Medicine, John H Stroger Jr. Hospital of Cook County, Chicago, USA
| | - Vatsala Katiyar
- Department of Internal Medicine, John H Stroger Jr. Hospital of Cook County, Chicago, USA
| | - Susan Mcdunn
- Department of Hematology-Oncology, John H Stroger Jr. Hospital of Cook County, Chicago, USA
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15
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Vaughan CA, Singh S, Grossman SR, Windle B, Deb SP, Deb S. Gain-of-function p53 activates multiple signaling pathways to induce oncogenicity in lung cancer cells. Mol Oncol 2017; 11:696-711. [PMID: 28423230 PMCID: PMC5467493 DOI: 10.1002/1878-0261.12068] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 03/20/2017] [Accepted: 04/06/2017] [Indexed: 01/26/2023] Open
Abstract
Gain-of-function (GOF) mutants of p53 upregulate genes implicated in cell proliferation and oncogenesis. Here, we report that GOF p53 induces tumorigenicity through simultaneous activation of key oncogenic pathways including those controlling putative tumor-initiating cell functions. We determined that in cells expressing p53-R273H, GOF p53 simultaneously upregulates genes from multiple signaling pathways by recognizing promoters containing distinct transcription factor (TF) binding sites. Our analytical data support a model in which GOF p53 complexes with two TFs on the promoter-a mediator protein, Med17, and a histone acetyl transferase, activating histone acetylation-and enhances gene expression to signal cell proliferation and oncogenesis. Thus, therapeutic inhibition of one GOF p53-induced pathway would be insufficient to prevent tumor growth as the oncoprotein activates a multitude of parallel pathways. This discovery suggests enormous selection advantage for cancer cells with GOF p53 to induce oncogenic growth, highlighting the problems of cancer therapy.
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Affiliation(s)
- Catherine A Vaughan
- Department of Biochemistry & Molecular Biology, Virginia Commonwealth University, Richmond, VA, USA
| | - Shilpa Singh
- Integrated Life Sciences Program, Virginia Commonwealth University, Richmond, VA, USA
| | - Steven R Grossman
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA.,Department of Internal Medicine, Division of Hematology, Oncology and Palliative Care, Richmond, VA, USA
| | - Brad Windle
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA.,Philips Institute, Virginia Commonwealth University, Richmond, VA, USA
| | - Swati Palit Deb
- Department of Biochemistry & Molecular Biology, Virginia Commonwealth University, Richmond, VA, USA.,Integrated Life Sciences Program, Virginia Commonwealth University, Richmond, VA, USA.,Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA
| | - Sumitra Deb
- Department of Biochemistry & Molecular Biology, Virginia Commonwealth University, Richmond, VA, USA.,Integrated Life Sciences Program, Virginia Commonwealth University, Richmond, VA, USA.,Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA
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16
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Vogiatzi F, Brandt DT, Schneikert J, Fuchs J, Grikscheit K, Wanzel M, Pavlakis E, Charles JP, Timofeev O, Nist A, Mernberger M, Kantelhardt EJ, Siebolts U, Bartel F, Jacob R, Rath A, Moll R, Grosse R, Stiewe T. Mutant p53 promotes tumor progression and metastasis by the endoplasmic reticulum UDPase ENTPD5. Proc Natl Acad Sci U S A 2016; 113:E8433-E8442. [PMID: 27956623 PMCID: PMC5206569 DOI: 10.1073/pnas.1612711114] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Mutations in the p53 tumor suppressor gene are the most frequent genetic alteration in cancer and are often associated with progression from benign to invasive stages with metastatic potential. Mutations inactivate tumor suppression by p53, and some endow the protein with novel gain of function (GOF) properties that actively promote tumor progression and metastasis. By comparative gene expression profiling of p53-mutated and p53-depleted cancer cells, we identified ectonucleoside triphosphate diphosphohydrolase 5 (ENTPD5) as a mutant p53 target gene, which functions as a uridine 5'-diphosphatase (UDPase) in the endoplasmic reticulum (ER) to promote the folding of N-glycosylated membrane proteins. A comprehensive pan-cancer analysis revealed a highly significant correlation between p53 GOF mutations and ENTPD5 expression. Mechanistically, mutp53 is recruited by Sp1 to the ENTPD5 core promoter to induce its expression. We show ENTPD5 to be a mediator of mutant p53 GOF activity in clonogenic growth, architectural tissue remodeling, migration, invasion, and lung colonization in an experimental metastasis mouse model. Our study reveals folding of N-glycosylated membrane proteins in the ER as a mechanism underlying the metastatic progression of tumors with mutp53 that could provide new possibilities for cancer treatment.
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Affiliation(s)
- Fotini Vogiatzi
- Institute of Molecular Oncology, Philipps-University, 35043 Marburg, Germany
| | | | - Jean Schneikert
- Institute of Molecular Oncology, Philipps-University, 35043 Marburg, Germany
| | - Jeannette Fuchs
- Institute of Molecular Oncology, Philipps-University, 35043 Marburg, Germany
| | | | - Michael Wanzel
- Institute of Molecular Oncology, Philipps-University, 35043 Marburg, Germany
| | - Evangelos Pavlakis
- Institute of Molecular Oncology, Philipps-University, 35043 Marburg, Germany
| | - Joël P Charles
- Institute of Molecular Oncology, Philipps-University, 35043 Marburg, Germany
| | - Oleg Timofeev
- Institute of Molecular Oncology, Philipps-University, 35043 Marburg, Germany
| | - Andrea Nist
- Genomics Core Facility, Philipps-University, 35043 Marburg, Germany
| | - Marco Mernberger
- Institute of Molecular Oncology, Philipps-University, 35043 Marburg, Germany
- Genomics Core Facility, Philipps-University, 35043 Marburg, Germany
| | - Eva J Kantelhardt
- Clinic of Gynecology, Faculty of Medicine, Martin-Luther-University Halle Wittenberg, 06097 Halle/Saale, Germany
| | - Udo Siebolts
- Institute of Pathology, Faculty of Medicine, Martin-Luther-University Halle-Wittenberg, 06112 Halle/Saale, Germany
| | - Frank Bartel
- Institute of Pathology, Faculty of Medicine, Martin-Luther-University Halle-Wittenberg, 06112 Halle/Saale, Germany
| | - Ralf Jacob
- Department of Cell Biology and Cell Pathology, Philipps-University, 35037 Marburg, Germany
| | - Ariane Rath
- Institute of Pathology, Philipps-University, 35043 Marburg, Germany
| | - Roland Moll
- Institute of Pathology, Philipps-University, 35043 Marburg, Germany
| | - Robert Grosse
- Institute of Pharmacology, Philipps-University, 35032 Marburg, Germany
| | - Thorsten Stiewe
- Institute of Molecular Oncology, Philipps-University, 35043 Marburg, Germany;
- Genomics Core Facility, Philipps-University, 35043 Marburg, Germany
- German Center for Lung Research (DZL), Universities of Giessen and Marburg Lung Center, 35392 Giessen, Germany
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17
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Canale M, Petracci E, Delmonte A, Chiadini E, Dazzi C, Papi M, Capelli L, Casanova C, De Luigi N, Mariotti M, Gamboni A, Chiari R, Bennati C, Calistri D, Ludovini V, Crinò L, Amadori D, Ulivi P. Impact of TP53 Mutations on Outcome in EGFR-Mutated Patients Treated with First-Line Tyrosine Kinase Inhibitors. Clin Cancer Res 2016; 23:2195-2202. [PMID: 27780855 DOI: 10.1158/1078-0432.ccr-16-0966] [Citation(s) in RCA: 198] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 09/30/2016] [Accepted: 10/17/2016] [Indexed: 11/16/2022]
Abstract
Purpose: To analyze the impact of TP53 mutations on response to first-line tyrosine kinase inhibitors (TKI) in patients with EGFR-mutated non-small cell lung cancer (NSCLC).Experimental Design: 136 EGFR-mutated NSCLC patients receiving first-line TKIs were analyzed. TP53 mutations were evaluated in 123 patients in relation to disease control rate (DCR), objective response rate (ORR), progression-free survival (PFS), and overall survival (OS).Results:TP53 mutations were observed in 37 (30.1%), 10 (27.0%), 6 (16.2%), 9 (24.3%), and 12 (32.4%) patients in exons 5, 6, 7, and 8, respectively. DCR was 70% in TP53-mutated patients compared with 88% in TP53-wild type (wt) patients [relative risk, RR, of disease progression: 3.17 (95% CI, 1.21-8.48), P = 0.019]. In particular, a 42% DCR was observed in patients with TP53 exon 8 mutation versus 87% in exon 8 wt patients [RR of disease progression 9.6 (2.71-36.63), P < 0.001]. Shorter median PFS and OS were observed in patients with TP53 exon 8 mutations compared with others (4.2 vs. 12.5, P = 0.058, and 16.2 vs. 32.3, P = 0.114, respectively); these differences became significant in the subgroup with EGFR exon 19 deletion (4.2 vs. 16.8, P < 0.001, and 7.6 vs. not reached, P = 0.006, respectively), HR 6.99 (95% CI, 2.34-20.87, P < 0.001) and HR 4.75 (95% CI, 1.38-16.29, P = 0.013), respectively.Conclusions:TP53 mutations, especially exon 8 mutations, reduce responsiveness to TKIs and worsen prognosis in EGFR-mutated NSCLC patients, mainly those carrying exon 19 deletions. Clin Cancer Res; 23(9); 2195-202. ©2016 AACR.
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Affiliation(s)
- Matteo Canale
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Elisabetta Petracci
- Unit of Biostatistics and Clinical Trials, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Angelo Delmonte
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Elisa Chiadini
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Claudio Dazzi
- Medical Oncology Unit, S.Maria delle Croci Hospital, Ravenna, Italy
| | | | - Laura Capelli
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Claudia Casanova
- Medical Oncology Unit, S.Maria delle Croci Hospital, Ravenna, Italy
| | - Nicoletta De Luigi
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Marita Mariotti
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | | | - Rita Chiari
- Division of Medical Oncology, Santa Maria della Misericordia Hospital, Perugia, Italy
| | - Chiara Bennati
- Division of Medical Oncology, Santa Maria della Misericordia Hospital, Perugia, Italy
| | - Daniele Calistri
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Vienna Ludovini
- Division of Medical Oncology, Santa Maria della Misericordia Hospital, Perugia, Italy
| | - Lucio Crinò
- Division of Medical Oncology, Santa Maria della Misericordia Hospital, Perugia, Italy
| | - Dino Amadori
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Paola Ulivi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy.
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