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Borlak J, Ciribilli Y, Bisio A, Selvaraj S, Inga A, Oh JH, Spanel R. The Abl1 tyrosine kinase is a key player in doxorubicin-induced cardiomyopathy and its p53/p73 cell death mediated signaling differs in atrial and ventricular cardiomyocytes. J Transl Med 2024; 22:845. [PMID: 39285385 PMCID: PMC11403941 DOI: 10.1186/s12967-024-05623-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Accepted: 08/16/2024] [Indexed: 09/20/2024] Open
Abstract
BACKGROUND Doxorubicin is an important anticancer drug, however, elicits dose-dependently cardiomyopathy. Given its mode of action, i.e. topoisomerase inhibition and DNA damage, we investigated genetic events associated with cardiomyopathy and searched for mechanism-based possibilities to alleviate cardiotoxicity. We treated rats at clinically relevant doses of doxorubicin. Histopathology and transmission electron microscopy (TEM) defined cardiac lesions, and transcriptomics unveiled cardiomyopathy-associated gene regulations. Genomic-footprints revealed critical components of Abl1-p53-signaling, and EMSA-assays evidenced Abl1 DNA-binding activity. Gene reporter assays confirmed Abl1 activity on p53-targets while immunohistochemistry/immunofluorescence microscopy demonstrated Abl1, p53&p73 signaling. RESULTS Doxorubicin treatment caused dose-dependently toxic cardiomyopathy, and TEM evidenced damaged mitochondria and myofibrillar disarray. Surviving cardiomyocytes repressed Parkin-1 and Bnip3-mediated mitophagy, stimulated dynamin-1-like dependent mitochondrial fission and induced anti-apoptotic Bag1 signaling. Thus, we observed induced mitochondrial biogenesis. Transcriptomics discovered heterogeneity in cellular responses with minimal overlap between treatments, and the data are highly suggestive for distinct cardiomyocyte (sub)populations which differed in their resilience and reparative capacity. Genome-wide footprints revealed Abl1 and p53 enriched binding sites in doxorubicin-regulated genes, and we confirmed Abl1 DNA-binding activity in EMSA-assays. Extraordinarily, Abl1 signaling differed in the heart with highly significant regulations of Abl1, p53 and p73 in atrial cardiomyocytes. Conversely, in ventricular cardiomyocytes, Abl1 solely-modulated p53-signaling that was BAX transcription-independent. Gene reporter assays established Abl1 cofactor activity for the p53-reporter PG13-luc, and ectopic Abl1 expression stimulated p53-mediated apoptosis. CONCLUSIONS The tyrosine kinase Abl1 is of critical importance in doxorubicin induced cardiomyopathy, and we propose its inhibition as means to diminish risk of cardiotoxicity.
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Affiliation(s)
- Jürgen Borlak
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
| | - Yari Ciribilli
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Alessandra Bisio
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Saravanakumar Selvaraj
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Alberto Inga
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Jung-Hwa Oh
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Reinhard Spanel
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
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2
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K AR, Arumugam S, Muninathan N, Baskar K, S D, D DR. P53 Gene as a Promising Biomarker and Potential Target for the Early Diagnosis of Reproductive Cancers. Cureus 2024; 16:e60125. [PMID: 38864057 PMCID: PMC11165294 DOI: 10.7759/cureus.60125] [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: 04/04/2024] [Accepted: 05/10/2024] [Indexed: 06/13/2024] Open
Abstract
One of the crucial aspects of cancer research is diagnosis with specificity and accuracy. Early cancer detection mostly helps make appropriate decisions regarding treatment and metastasis. The well-studied transcription factor tumor suppressor protein p53 is essential for maintaining genetic integrity. p53 is a key tumor suppressor that recognizes the carcinogenic biological pathways and eradicates them by apoptosis. A wide range of carcinomas, especially gynecological such as ovarian, cervical, and endometrial cancers, frequently undergo TP53 gene mutations. This study evaluates the potential of the p53 gene as a biological marker for the diagnosis of reproductive system neoplasms. Immunohistochemistry of p53 is rapid, easy to accomplish, cost-effective, and preferred by pathologists as a surrogate for the analysis of TP53 mutation. Thus, this review lays a groundwork for future efforts to develop techniques using p53 for the early diagnosis of cancer.
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Affiliation(s)
- Aswathi R K
- Medical Biochemistry, Meenakshi Academy of Higher Education and Research, Chennai, IND
| | - Suresh Arumugam
- Central Research Laboratory, Meenakshi Medical College Hospital and Research Institute, Kanchipuram, IND
| | - Natrajan Muninathan
- Central Research Laboratory, Meenakshi Medical College Hospital and Research Institute, Kanchipuram, IND
| | - Kuppusamy Baskar
- Central Research Laboratory, Meenakshi Medical College Hospital and Research Institute, Kanchipuram, IND
| | - Deepthi S
- Research and Development, Meenakshi Academy of Higher Education and Research, Chennai, IND
| | - Dinesh Roy D
- Centre for Advanced Genetic Studies, Genetika, Thiruvananthapuram, IND
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3
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Tadijan A, Precazzini F, Hanžić N, Radić M, Gavioli N, Vlašić I, Ozretić P, Pinto L, Škreblin L, Barban G, Slade N, Ciribilli Y. Altered Expression of Shorter p53 Family Isoforms Can Impact Melanoma Aggressiveness. Cancers (Basel) 2021; 13:cancers13205231. [PMID: 34680379 PMCID: PMC8533715 DOI: 10.3390/cancers13205231] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 02/05/2023] Open
Abstract
Cutaneous melanoma is the most aggressive form of skin cancer. Despite the significant advances in the management of melanoma in recent decades, it still represents a challenge for clinicians. The TP53 gene, the guardian of the genome, which is altered in more than 50% of human cancers, is rarely mutated in melanoma. More recently, researchers started to appreciate the importance of shorter p53 isoforms as potential modifiers of the p53-dependent responses. We analyzed the expression of p53 and p73 isoforms both at the RNA and protein level in a panel of melanoma-derived cell lines with different TP53 and BRAF status, in normal conditions or upon treatment with common anti-cancer DNA damaging agents or targeted therapy. Using lentiviral vectors, we also generated stable clones of H1299 p53 null cells over-expressing the less characterized isoforms Δ160p53α, Δ160p53β, and Δ160p53γ. Further, we obtained two melanoma-derived cell lines resistant to BRAF inhibitor vemurafenib. We observed that melanoma cell lines expressed a wide array of p53 and p73 isoforms, with Δ160p53α as the most variable one. We demonstrated for the first time that Δ160p53α, and to a lesser extent Δ160p53β, can be recruited on chromatin, and that Δ160p53γ can localize in perinuclear foci; moreover, all Δ160p53 isoforms can stimulate proliferation and in vitro migration. Lastly, vemurafenib-resistant melanoma cells showed an altered expression of p53 and p73 isoforms, namely an increased expression of potentially pro-oncogenic Δ40p53β and a decrease in tumor-suppressive TAp73β. We therefore propose that p53 family isoforms can play a role in melanoma cells' aggressiveness.
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Affiliation(s)
- Ana Tadijan
- Laboratory for Protein Dynamics, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (A.T.); (N.H.); (M.R.); (I.V.); (L.Š.)
| | - Francesca Precazzini
- Laboratory of Molecular Cancer Genetics, Department of Cellular, Computational, and Integrative Biology (CIBIO), University of Trento, 38123 Povo, TN, Italy; (F.P.); (N.G.); (L.P.); (G.B.)
- Laboratory of RNA Biology and Biotechnology, Department of Cellular, Computational, and Integrative Biology (CIBIO), University of Trento, 38123 Povo, TN, Italy
| | - Nikolina Hanžić
- Laboratory for Protein Dynamics, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (A.T.); (N.H.); (M.R.); (I.V.); (L.Š.)
| | - Martina Radić
- Laboratory for Protein Dynamics, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (A.T.); (N.H.); (M.R.); (I.V.); (L.Š.)
| | - Nicolò Gavioli
- Laboratory of Molecular Cancer Genetics, Department of Cellular, Computational, and Integrative Biology (CIBIO), University of Trento, 38123 Povo, TN, Italy; (F.P.); (N.G.); (L.P.); (G.B.)
| | - Ignacija Vlašić
- Laboratory for Protein Dynamics, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (A.T.); (N.H.); (M.R.); (I.V.); (L.Š.)
| | - Petar Ozretić
- Laboratory for Hereditary Cancer, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia;
| | - Lia Pinto
- Laboratory of Molecular Cancer Genetics, Department of Cellular, Computational, and Integrative Biology (CIBIO), University of Trento, 38123 Povo, TN, Italy; (F.P.); (N.G.); (L.P.); (G.B.)
| | - Lidija Škreblin
- Laboratory for Protein Dynamics, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (A.T.); (N.H.); (M.R.); (I.V.); (L.Š.)
| | - Giulia Barban
- Laboratory of Molecular Cancer Genetics, Department of Cellular, Computational, and Integrative Biology (CIBIO), University of Trento, 38123 Povo, TN, Italy; (F.P.); (N.G.); (L.P.); (G.B.)
| | - Neda Slade
- Laboratory for Protein Dynamics, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (A.T.); (N.H.); (M.R.); (I.V.); (L.Š.)
- Correspondence: (N.S.); (Y.C.)
| | - Yari Ciribilli
- Laboratory of Molecular Cancer Genetics, Department of Cellular, Computational, and Integrative Biology (CIBIO), University of Trento, 38123 Povo, TN, Italy; (F.P.); (N.G.); (L.P.); (G.B.)
- Correspondence: (N.S.); (Y.C.)
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Moesslacher CS, Kohlmayr JM, Stelzl U. Exploring absent protein function in yeast: assaying post translational modification and human genetic variation. MICROBIAL CELL (GRAZ, AUSTRIA) 2021; 8:164-183. [PMID: 34395585 PMCID: PMC8329848 DOI: 10.15698/mic2021.08.756] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 06/13/2021] [Accepted: 06/18/2021] [Indexed: 01/08/2023]
Abstract
Yeast is a valuable eukaryotic model organism that has evolved many processes conserved up to humans, yet many protein functions, including certain DNA and protein modifications, are absent. It is this absence of protein function that is fundamental to approaches using yeast as an in vivo test system to investigate human proteins. Functionality of the heterologous expressed proteins is connected to a quantitative, selectable phenotype, enabling the systematic analyses of mechanisms and specificity of DNA modification, post-translational protein modifications as well as the impact of annotated cancer mutations and coding variation on protein activity and interaction. Through continuous improvements of yeast screening systems, this is increasingly carried out on a global scale using deep mutational scanning approaches. Here we discuss the applicability of yeast systems to investigate absent human protein function with a specific focus on the impact of protein variation on protein-protein interaction modulation.
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Affiliation(s)
- Christina S Moesslacher
- Institute of Pharmaceutical Sciences and BioTechMed-Graz, University of Graz, Graz, Austria
- Contributed equally to the writing of this review
| | - Johanna M Kohlmayr
- Institute of Pharmaceutical Sciences and BioTechMed-Graz, University of Graz, Graz, Austria
- Contributed equally to the writing of this review
| | - Ulrich Stelzl
- Institute of Pharmaceutical Sciences and BioTechMed-Graz, University of Graz, Graz, Austria
- Contributed equally to the writing of this review
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5
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Wang H, Chen L, Zhou T, Zhang Z, Zeng C. p53 Mutation at Serine 249 and Its Gain of Function Are Highly Related to Hepatocellular Carcinoma after Smoking Exposure. Public Health Genomics 2021; 24:171-181. [PMID: 34192689 DOI: 10.1159/000516598] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 04/16/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND It has been convincingly suggested that a close correlation exists between the incidence of hepatocellular carcinoma (HCC) and cigarette smoking. However, the underlying effect of smoking on HCC is not clear. METHODS A binary unconditional logistic regression was used for the data on a total of 300 cases and 612 controls. The approach of functional analysis of separated alleles in yeast and direct sequencing of TP53 mutations were applied to analyze the p53 status in the HCC group. The relationship between p53 mutation at serine 249 (p53-RS) and smoking was assessed. Quantitative reverse transcription PCR was employed for the evaluation to transcriptional activity of p53 and p53-RS. RESULTS Smoking was linked to the risk of HCC with an increased dose-response effect. Moreover, among subjects who did not drink, the risks of HCC were significantly increased for smokers between HCC and controls. Besides, there was an increase in the number of HCC in smokers compared to nonsmokers after exclusion of HBV and/or HCV infection. Also, a significant difference was observed in the incidence of p53-RS between smokers and nonsmokers the HCC group. Furthermore, the p53-RS transcriptional activity was significantly increased in tumor tissues. CONCLUSIONS It strongly demonstrated that tobacco smoking is positively and independently associated with HCC, which may be attributed to p53-RS and its gain of function.
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Affiliation(s)
- Huai Wang
- School of Public Health, Nanchang University, Nanchang, China.,Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, China
| | - Lu Chen
- Wuhan Taisheng Biological Technology Co., Ltd., Wuhan, China
| | - Tong Zhou
- School of Public Health, Nanchang University, Nanchang, China.,Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, China
| | - Zhongwei Zhang
- School of Public Health, Nanchang University, Nanchang, China.,Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, China
| | - Canwei Zeng
- Wuhan Taisheng Biological Technology Co., Ltd., Wuhan, China
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6
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Li P, Hao Z, Zeng F. Tumor suppressor stars in yeast G1/S transition. Curr Genet 2020; 67:207-212. [PMID: 33175222 DOI: 10.1007/s00294-020-01126-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 10/22/2020] [Accepted: 10/28/2020] [Indexed: 12/11/2022]
Abstract
Yeast is one of the best-understood biological systems for genetic research. Over the last 40 years, geneticists have striven to search for homologues of tumor suppressors in yeast to simplify cancer research. The star tumor suppressor p21, downstream target of p53, is one of the primary factors on the START point through negatively regulating CycD/E-CDK, the yeast counterpart Cln3-Cdk1. Not like yeast Whi5 that was identified as the analog of the retinoblastoma tumor suppressor protein (Rb) and hence promoted to uncover the mechanism of its cancer suppression, homologue of p21 had not been found in yeast. Our lab identified Cip1 in budding yeast as a novel negative regulator of G1-Cdk1 and proposed that Cip1 is an analog of human p21. Recently, we demonstrated a dual repressive function of Cip1 on START timing via the redundant Cln3 and Ccr4 pathways. This work in yeast may help clarify the complex regulation in human p53-p21 signaling cascade. In this review, we will discuss the yeast paralogs of star tumor suppressors in the control of G1/S transition and present the new findings in this field.
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Affiliation(s)
- Pan Li
- College of Life Sciences, Hebei Agricultural University, Baoding, 071001, Hebei, China
| | - Zhimin Hao
- College of Life Sciences, Hebei Agricultural University, Baoding, 071001, Hebei, China
| | - Fanli Zeng
- College of Life Sciences, Hebei Agricultural University, Baoding, 071001, Hebei, China.
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7
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Monti P, Menichini P, Speciale A, Cutrona G, Fais F, Taiana E, Neri A, Bomben R, Gentile M, Gattei V, Ferrarini M, Morabito F, Fronza G. Heterogeneity of TP53 Mutations and P53 Protein Residual Function in Cancer: Does It Matter? Front Oncol 2020; 10:593383. [PMID: 33194757 PMCID: PMC7655923 DOI: 10.3389/fonc.2020.593383] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 09/29/2020] [Indexed: 12/14/2022] Open
Abstract
The human TP53 locus, located on the short arm of chromosome 17, encodes a tumour suppressor protein which functions as a tetrameric transcription factor capable of regulating the expression of a plethora of target genes involved in cell cycle arrest, apoptosis, DNA repair, autophagy, and metabolism regulation. TP53 is the most commonly mutated gene in human cancer cells and TP53 germ-line mutations are responsible for the cancer-prone Li-Fraumeni syndrome. When mutated, the TP53 gene generally presents missense mutations, which can be distributed throughout the coding sequence, although they are found most frequently in the central DNA binding domain of the protein. TP53 mutations represent an important prognostic and predictive marker in cancer. The presence of a TP53 mutation does not necessarily imply a complete P53 inactivation; in fact, mutant P53 proteins are classified based on the effects on P53 protein function. Different models have been used to explore these never-ending facets of TP53 mutations, generating abundant experimental data on their functional impact. Here, we briefly review the studies analysing the consequences of TP53 mutations on P53 protein function and their possible implications for clinical outcome. The focus shall be on Chronic Lymphocytic Leukemia (CLL), which also has generated considerable discussion on the role of TP53 mutations for therapy decisions.
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Affiliation(s)
- Paola Monti
- Mutagenesis and Cancer Prevention Unit, Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS) Ospedale Policlinico San Martino, Genoa, Italy
| | - Paola Menichini
- Mutagenesis and Cancer Prevention Unit, Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS) Ospedale Policlinico San Martino, Genoa, Italy
| | - Andrea Speciale
- Mutagenesis and Cancer Prevention Unit, Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS) Ospedale Policlinico San Martino, Genoa, Italy
| | - Giovanna Cutrona
- Molecular Pathology Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Franco Fais
- Molecular Pathology Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy.,Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | - Elisa Taiana
- Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy.,Hematology, Fondazione Cà Granda IRCCS Policlinico, Milan, Italy
| | - Antonino Neri
- Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy.,Hematology, Fondazione Cà Granda IRCCS Policlinico, Milan, Italy
| | - Riccardo Bomben
- Clinical and Experimental Onco-Haematology Unit, Centro di Riferimento Oncologico, I.R.C.C.S., Aviano, Italy
| | - Massimo Gentile
- Hematology Unit, Azienda Ospedaliera (AO) di Cosenza, Cosenza, Italy
| | - Valter Gattei
- Clinical and Experimental Onco-Haematology Unit, Centro di Riferimento Oncologico, I.R.C.C.S., Aviano, Italy
| | - Manlio Ferrarini
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | - Fortunato Morabito
- Unità di Ricerca Biotecnologica, Azienda Sanitaria Provinciale di Cosenza, Aprigliano, Italy.,Department of Hematology and Bone Marrow Transplant Unit, Augusta Victoria Hospital, Jerusalem, Israel
| | - Gilberto Fronza
- Mutagenesis and Cancer Prevention Unit, Istituto di Ricerca e Cura a Carattere Scientifico (IRCCS) Ospedale Policlinico San Martino, Genoa, Italy
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8
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P63 modulates the expression of the WDFY2 gene which is implicated in cancer regulation and limb development. Biosci Rep 2020; 39:221381. [PMID: 31789342 PMCID: PMC6914664 DOI: 10.1042/bsr20192114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 11/15/2019] [Accepted: 11/29/2019] [Indexed: 12/31/2022] Open
Abstract
TP63 is a member of the TP53 gene family, sharing a common gene structure that produces two groups of mRNAs' encoding proteins with different N-terminal regions (ΔN and TA isoforms); both transcripts are also subjected to alternative splicing mechanisms at C-terminus, generating a variety of isoforms. p63 is a master regulator of epidermal development and homoeostasis as well as an important player in tumorigenesis and cancer progression with both oncogenic and tumour suppressive roles. A number of studies have aimed at the identification of p63 target genes, allowing the dissection of the molecular pathways orchestrated by the different isoforms. In the present study we investigated in more detail the p63 responsiveness of the WDFY2 (WD repeat and FYVE domain containing 2) gene, encoding for an endosomal protein identified as a binding partner of the PI-3K/AKT signalling pathway. We showed that overexpression of different p63 isoforms was able to induce WDFY2 expression in TP53-null cells. The p63-dependent transcriptional activation was associated with specific response elements (REs) that have been identified by a bioinformatics tool and validated by yeast- and mammal-based assays. Interestingly, to confirm that WDFY2 belongs to the p63 network of cancer regulation, we analysed the impact of WDFY2 alterations, by showing its frequent deletion in different types of tumours and suggesting its expression level as a prognostic biomarker. Lastly, we identified a chromosomal translocation involving the WDFY2 locus in a patient affected by a rare congenital limb anomaly, indicating WDFY2 as a possible susceptibility gene placed downstream p63 in the network of limb development.
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9
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Marçais A, Cook L, Witkover A, Asnafi V, Avettand-Fenoel V, Delarue R, Cheminant M, Sibon D, Frenzel L, de Thé H, Bangham CRM, Bazarbachi A, Hermine O, Suarez F. Arsenic trioxide (As 2O 3) as a maintenance therapy for adult T cell leukemia/lymphoma. Retrovirology 2020; 17:5. [PMID: 32199462 PMCID: PMC7085150 DOI: 10.1186/s12977-020-0513-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 03/03/2020] [Indexed: 01/28/2023] Open
Abstract
Background Adult T-cell leukemia-lymphoma (ATL) is an aggressive mature lymphoid proliferation associated with poor prognosis. Standard of care includes chemotherapy and/or the combination of zidovudine and interferon-alpha. However, most patients experience relapse less than 6 months after diagnosis. Allogeneic stem cell transplantation is the only curative treatment, but is only feasible in a minority of cases. We previously showed in a mouse model that Arsenic trioxide (As2O3) targets ATL leukemia initiating cells. Results As2O3 consolidation was given in 9 patients with ATL (lymphoma n = 4; acute n = 2; and indolent n = 3), who were in complete (n = 4) and partial (n = 3) remission, in stable (n = 1) and in progressive (n = 1) disease. Patients received up to 8 weeks of As2O3 at the dose of 0.15 mg/kg/day intravenously in combination with zidovudine and interferon-alpha. One patient in progression died rapidly. Of the remaining eight patients, three with indolent ATL subtype showed overall survivals of 48, 53 and 97 months, and duration of response to As2O3 of 22, 25 and 73 months. The other 5 patients with aggressive ATL subtype had median OS of 36 months and a median duration of response of 10 months. Side effects were mostly hematological and cutaneous (one grade 3) and reversible with dose reduction of AZT/IFN and/or As2O3 discontinuation. The virus integration analysis revealed the regression of the predominant malignant clone in one patient with a chronic subtype. Conclusion These results suggest that consolidation with As2O3 could be an option for patients with ATL in response after induction therapy and who are not eligible for allogeneic stem cell transplantation.
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Affiliation(s)
- Ambroise Marçais
- Service d'Hématologie Adultes, Institut Imagine, Hôpital Universitaire Necker Enfants Malades, APHP, Université de Paris, 149-161 rue de Sèvres, 75743, Paris Cedex 15, France.
| | - Lucy Cook
- Section of Virology, Wright-Fleming Institute, Imperial College, London, UK
| | - Aviva Witkover
- Section of Virology, Wright-Fleming Institute, Imperial College, London, UK
| | - Vahid Asnafi
- Laboratoire d'onco-hématologie, Institut Necker-Enfants Malades, INSERM U1151, Hôpital Universitaire Necker Enfants Malades, APHP, Université de Paris, Paris, France
| | - Véronique Avettand-Fenoel
- Laboratoire de Microbiologie, Hôpital Universitaire Necker Enfants Malades, APHP, Université de Paris, Paris, France
| | - Richard Delarue
- Service d'Hématologie Adultes, Institut Imagine, Hôpital Universitaire Necker Enfants Malades, APHP, Université de Paris, 149-161 rue de Sèvres, 75743, Paris Cedex 15, France
| | - Morgane Cheminant
- Service d'Hématologie Adultes, Institut Imagine, Hôpital Universitaire Necker Enfants Malades, APHP, Université de Paris, 149-161 rue de Sèvres, 75743, Paris Cedex 15, France
| | - David Sibon
- Service d'Hématologie Adultes, Institut Imagine, Hôpital Universitaire Necker Enfants Malades, APHP, Université de Paris, 149-161 rue de Sèvres, 75743, Paris Cedex 15, France
| | - Laurent Frenzel
- Service d'Hématologie Adultes, Institut Imagine, Hôpital Universitaire Necker Enfants Malades, APHP, Université de Paris, 149-161 rue de Sèvres, 75743, Paris Cedex 15, France
| | - Hugues de Thé
- Institut Universitaire d'Hématologie, Hôpital St. Louis, Paris, France
| | | | - Ali Bazarbachi
- Department of Internal Medicine, American University of Beirut, Beirut, Lebanon
| | - Olivier Hermine
- Service d'Hématologie Adultes, Institut Imagine, Hôpital Universitaire Necker Enfants Malades, APHP, Université de Paris, 149-161 rue de Sèvres, 75743, Paris Cedex 15, France.
| | - Felipe Suarez
- Service d'Hématologie Adultes, Institut Imagine, Hôpital Universitaire Necker Enfants Malades, APHP, Université de Paris, 149-161 rue de Sèvres, 75743, Paris Cedex 15, France.
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10
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Farooqi K, Ghazvini M, Pride LD, Mazzella L, White D, Pramanik A, Bargonetti J, Moore CW. A Protein in the Yeast Saccharomyces cerevisiae Presents DNA Binding Homology to the p53 Checkpoint Protein and Tumor Suppressor. Biomolecules 2020; 10:E417. [PMID: 32156076 PMCID: PMC7175211 DOI: 10.3390/biom10030417] [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: 01/31/2020] [Revised: 02/28/2020] [Accepted: 03/04/2020] [Indexed: 02/07/2023] Open
Abstract
Saccharomyces cerevisiae does not contain a p53 homolog. Utilizing this yeast as an in vivo test tube model, our aim was to investigate if a yeast protein would show p53 DNA binding homology. Electrophoretic mobility shift analyses revealed the formation of specific DNA-protein complexes consisting of S. cerevisiae nuclear protein(s) and oligonucleotides containing p53 DNA binding sites. A S. cerevisiae p53 binding site factor (Scp53BSF) bound to a p53 synthetic DNA-consensus sequence (SCS) and a p53 binding-site sequence from the MDM2 oncogene. The complexes were of comparable size. Like mammalian p53, the affinity of Scp53BSF for the SCS oligonucleotide was higher than for the MDM2 oligonucleotide. Binding of Scp53BSF to the SCS and MDM2 oligonucleotides was strongly competed by unlabeled oligonucleotides containing mammalian p53 sites, but very little by a mutated site oligonucleotide. Importantly, Scp53BSF-DNA binding activity was significantly induced in extracts from cells with DNA damage. This resulted in dose-dependent coordinated activation of transcription when using p53-binding site reporter constructs. An ancient p53-like DNA binding protein may have been found, and activation of DNA-associated factors to p53 response elements may have functions not yet determined.
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Affiliation(s)
- Kanwal Farooqi
- Department of Molecular, Cellular and Biomedical Studies, City University of New York School of Medicine and B.S.-M.D. Program, Harris Hall, 160 Convent Avenue, New York, NY 10031, USA; (K.F.); (M.G.); (L.D.P.); (L.M.); (A.P.)
| | - Marjan Ghazvini
- Department of Molecular, Cellular and Biomedical Studies, City University of New York School of Medicine and B.S.-M.D. Program, Harris Hall, 160 Convent Avenue, New York, NY 10031, USA; (K.F.); (M.G.); (L.D.P.); (L.M.); (A.P.)
| | - Leah D. Pride
- Department of Molecular, Cellular and Biomedical Studies, City University of New York School of Medicine and B.S.-M.D. Program, Harris Hall, 160 Convent Avenue, New York, NY 10031, USA; (K.F.); (M.G.); (L.D.P.); (L.M.); (A.P.)
- City University of New York Graduate Center, Programs in Biochemistry and Biology, 365 Fifth Ave, New York, NY 10016, USA; (D.W.); (J.B.)
| | - Louis Mazzella
- Department of Molecular, Cellular and Biomedical Studies, City University of New York School of Medicine and B.S.-M.D. Program, Harris Hall, 160 Convent Avenue, New York, NY 10031, USA; (K.F.); (M.G.); (L.D.P.); (L.M.); (A.P.)
| | - David White
- City University of New York Graduate Center, Programs in Biochemistry and Biology, 365 Fifth Ave, New York, NY 10016, USA; (D.W.); (J.B.)
- Department of Biology, Hunter College, City University of New York, 695 Park Avenue, New York, NY 10021, USA
| | - Ajay Pramanik
- Department of Molecular, Cellular and Biomedical Studies, City University of New York School of Medicine and B.S.-M.D. Program, Harris Hall, 160 Convent Avenue, New York, NY 10031, USA; (K.F.); (M.G.); (L.D.P.); (L.M.); (A.P.)
| | - Jill Bargonetti
- City University of New York Graduate Center, Programs in Biochemistry and Biology, 365 Fifth Ave, New York, NY 10016, USA; (D.W.); (J.B.)
- Department of Biology, Hunter College, City University of New York, 695 Park Avenue, New York, NY 10021, USA
| | - Carol Wood Moore
- Department of Molecular, Cellular and Biomedical Studies, City University of New York School of Medicine and B.S.-M.D. Program, Harris Hall, 160 Convent Avenue, New York, NY 10031, USA; (K.F.); (M.G.); (L.D.P.); (L.M.); (A.P.)
- City University of New York Graduate Center, Programs in Biochemistry and Biology, 365 Fifth Ave, New York, NY 10016, USA; (D.W.); (J.B.)
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11
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Shahbandi A, Nguyen HD, Jackson JG. TP53 Mutations and Outcomes in Breast Cancer: Reading beyond the Headlines. Trends Cancer 2020; 6:98-110. [PMID: 32061310 PMCID: PMC7931175 DOI: 10.1016/j.trecan.2020.01.007] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/11/2019] [Accepted: 01/06/2020] [Indexed: 12/15/2022]
Abstract
TP53 is the most frequently mutated gene in breast cancer, but its role in survival is confounded by different studies concluding that TP53 mutations are associated with negative, neutral, or positive outcomes. Closer examination showed that many studies were limited by factors such as imprecise methods to detect TP53 mutations and small cohorts that combined patients treated with drugs having very different mechanisms of action. When only studies of patients receiving the same treatment(s) were compared, they tended to agree. These analyses reveal a role for TP53 in response to different treatments as complex as its different biological activities. We discuss studies that have assessed the role of TP53 mutations in breast cancer treatment and limitations in interpreting reported results.
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Affiliation(s)
- Ashkan Shahbandi
- Tulane School of Medicine, Department of Biochemistry and Molecular Biology, 1430 Tulane Avenue #8543, New Orleans, LA 70112, USA
| | - Hoang D Nguyen
- Tulane School of Medicine, Department of Biochemistry and Molecular Biology, 1430 Tulane Avenue #8543, New Orleans, LA 70112, USA
| | - James G Jackson
- Tulane School of Medicine, Department of Biochemistry and Molecular Biology, 1430 Tulane Avenue #8543, New Orleans, LA 70112, USA.
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12
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Hall C, Muller PA. The Diverse Functions of Mutant 53, Its Family Members and Isoforms in Cancer. Int J Mol Sci 2019; 20:ijms20246188. [PMID: 31817935 PMCID: PMC6941067 DOI: 10.3390/ijms20246188] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 11/29/2019] [Accepted: 12/05/2019] [Indexed: 02/08/2023] Open
Abstract
The p53 family of proteins has grown substantially over the last 40 years. It started with p53, then p63, p73, isoforms and mutants of these proteins. The function of p53 as a tumour suppressor has been thoroughly investigated, but the functions of all isoforms and mutants and the interplay between them are still poorly understood. Mutant p53 proteins lose p53 function, display dominant-negative (DN) activity and display gain-of-function (GOF) to varying degrees. GOF was originally attributed to mutant p53′s inhibitory function over the p53 family members p63 and p73. It has become apparent that this is not the only way in which mutant p53 operates as a large number of transcription factors that are not related to p53 are activated on mutant p53 binding. This raises the question to what extent mutant p53 binding to p63 and p73 plays a role in mutant p53 GOF. In this review, we discuss the literature around the interaction between mutant p53 and family members, including other binding partners, the functional consequences and potential therapeutics.
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13
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Garziera M, Cecchin E, Giorda G, Sorio R, Scalone S, De Mattia E, Roncato R, Gagno S, Poletto E, Romanato L, Ecca F, Canzonieri V, Toffoli G. Clonal Evolution of TP53 c.375+1G>A Mutation in Pre- and Post- Neo-Adjuvant Chemotherapy (NACT) Tumor Samples in High-Grade Serous Ovarian Cancer (HGSOC). Cells 2019; 8:cells8101186. [PMID: 31581548 PMCID: PMC6829309 DOI: 10.3390/cells8101186] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/22/2019] [Accepted: 09/30/2019] [Indexed: 12/25/2022] Open
Abstract
Carboplatin/paclitaxel is the reference regimen in the treatment of advanced high-grade serous ovarian cancer (HGSOC) in neo-adjuvant chemotherapy (NACT) before interval debulking surgery (IDS). To identify new genetic markers of platinum-resistance, next-generation sequencing (NGS) analysis of 26 cancer-genes was performed on paired matched pre- and post-NACT tumor and blood samples in a patient with stage IV HGSOC treated with NACT-IDS, showing platinum-refractory/resistance and poor prognosis. Only the TP53 c.375+1G>A somatic mutation was identified in both tumor samples. This variant, associated with aberrant splicing, was in trans configuration with the 72Arg allele of the known germline polymorphism TP53 c.215C>G (p. Pro72Arg). In the post-NACT tumor sample we observed the complete expansion of the TP53 c.375+1G>A driver mutant clone with somatic loss of the treatment-sensitive 72Arg allele. NGS results were confirmed with Sanger method and immunostaining for p53, BRCA1, p16, WT1, and Ki-67 markers were evaluated. This study showed that (i) the splice mutation in TP53 was present as an early driver mutation at diagnosis; (ii) the mutational profile was shared in pre- and post-NACT tumor samples; (iii) the complete expansion of a single dominant mutant clone through loss of heterozygosity (LOH) had occurred, suggesting a possible mechanism of platinum-resistance in HGSOC under the pressure of NACT.
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Affiliation(s)
- Marica Garziera
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Erika Cecchin
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Giorgio Giorda
- Gynecological Oncology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Roberto Sorio
- Medical Oncology Unit C, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Simona Scalone
- Medical Oncology Unit C, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Elena De Mattia
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Rossana Roncato
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Sara Gagno
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Elena Poletto
- Medical Oncology, "Santa Maria della Misericordia" University Hospital, ASUIUD, 33100 Udine, Italy.
| | - Loredana Romanato
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Fabrizio Ecca
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
| | - Vincenzo Canzonieri
- Pathology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy.
| | - Giuseppe Toffoli
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico (CRO), IRCCS, 33081 Aviano, Italy.
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14
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Knezović Florijan M, Ozretić P, Bujak M, Pezzè L, Ciribilli Y, Kaštelan Ž, Slade N, Hudolin T. The role of p53 isoforms' expression and p53 mutation status in renal cell cancer prognosis. Urol Oncol 2019; 37:578.e1-578.e10. [PMID: 30948335 DOI: 10.1016/j.urolonc.2019.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/13/2019] [Accepted: 03/10/2019] [Indexed: 02/08/2023]
Abstract
OBJECTIVES To analyze p53 mutations and gene expression of p53, ∆40p53, and ∆133p53 isoforms in renal cell cancer (RCC) tissues and normal adjacent tissue (NAT) and to associate them to clinical features and outcome. PATIENTS AND METHODS Forty-one randomly selected patients, with primary, previously untreated RCC, with complete clinicopathohistological data were analyzed. NAT samples were available for 37 cases. Expression of p53, ∆40p53 and ∆133p53 was determined using RT-qPCR. A functional yeast-based assay was performed to analyze p53 mutations. RESULTS More than half (56.1%) of patients harbored functional p53 mutations, and they were significantly younger than those with wild type (WT) p53 (P = 0.032). Expression of p53, ∆40p53, and ∆133p53 was upregulated in mutant (MT) p53 RCC compared to WT p53 RCC tissues. However, there was no difference in expression of these isoforms between MT p53 RCC tissues and NAT. Expression of ∆133p53 was significantly downregulated in WT p53 tissues compared to NAT (P = 0.006). Patients that harbored functional p53 mutation had better overall survival (hazard ratio 4.32, 95% confidence interval 1.46-18.82, P = 0.006). Multivariate analysis demonstrated that tumor stage and p53 mutation might be used as independent prognostic marker for overall survival in RCC patients. CONCLUSIONS Our findings support the specific events in the carcinogenesis of RCC. p53 isoforms can be differentially expressed depending on p53 mutational status.
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Affiliation(s)
| | - Petar Ozretić
- Division of Molecular Medicine, Ruđer Bošković Institute, Zagreb, Croatia
| | - Maro Bujak
- Division of Materials Chemistry, Ruđer Bošković Institute, Zagreb, Croatia
| | - Laura Pezzè
- Laboratory of Molecular Cancer Genetics, Centre for Integrative Biology (CIBIO), University of Trento, Povo (TN), Italy
| | - Yari Ciribilli
- Laboratory of Molecular Cancer Genetics, Centre for Integrative Biology (CIBIO), University of Trento, Povo (TN), Italy
| | - Željko Kaštelan
- Department of Urology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Neda Slade
- Division of Molecular Medicine, Ruđer Bošković Institute, Zagreb, Croatia.
| | - Tvrtko Hudolin
- Department of Urology, University Hospital Centre Zagreb, Zagreb, Croatia
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15
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Bonnefoi H, MacGrogan G, Poncet C, Iggo R, Pommeret F, Grellety T, Larsimont D, Bécette V, Kerdraon O, Bibeau F, Ghnassia JP, Picquenot JM, Thomas J, Tille JC, Slaets L, Bodmer A, Bergh J, Cameron D. Molecular apocrine tumours in EORTC 10994/BIG 1-00 phase III study: pathological response after neoadjuvant chemotherapy and clinical outcomes. Br J Cancer 2019; 120:913-921. [PMID: 30899086 PMCID: PMC6734658 DOI: 10.1038/s41416-019-0420-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 02/09/2019] [Accepted: 02/20/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND We explored, within the EORTC10994 study, the outcomes for patients with molecular apocrine (MA) breast cancer, and defined immunohistochemistry (IHC) as androgen-receptor (AR) positive, oestrogen (ER) and progesterone (PR) negative. We also assessed the concordance between IHC and gene expression arrays (GEA) in the identification of MA cancers. METHODS Centrally assessed biopsies for AR, ER, PR, HER2 and Ki67 by IHC were classified into six subtypes: MA, triple-negative (TN) basal-like, luminal A, luminal B HER2 negative, luminal B HER2 positive and "other". The two main objectives were the pCR rates and survival outcomes in the overall MA subtype (and further divided by HER2 status) and the remaining five subtypes. RESULTS IHC subtyping was obtained in 846 eligible patients. Ninety-three (11%) tumours were classified as the MA subtype. Both IHC and GEA data were available for 64 patients. In this subset, IHC concordance was 88.3% in identifying MA tumours compared with GEA. Within the MA subtype, pCR was observed in 33.3% of the patients (95% CI: 29.4-43.9) and the 5-year recurrence-free interval was 59.2% (95% CI: 48.2-68.6). Patients with MA and TN basal-like tumours have lower survival outcomes. CONCLUSIONS Irrespective of their HER2 status, the prognosis for MA tumours remains poor and adjuvant trials evaluating anti-androgens should be considered.
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Affiliation(s)
- Hervé Bonnefoi
- Department of Medical Oncology, Institut Bergonié Unicancer, University of Bordeaux, INSERM U1218, INSERM CIC1401, Bordeaux, France.
| | - Gaetan MacGrogan
- Department of BioPathology, Institut Bergonié Unicancer, INSERM U1218, Bordeaux, France
| | - Coralie Poncet
- European Organisation for Research and Treatment of Cancer EORTC) Headquarters, Brussels, Belgium
| | - Richard Iggo
- Institut Bergonié Unicancer, INSERM U1218, Bordeaux, France
| | - Fanny Pommeret
- Department of Medical Oncology, Institut Bergonié Unicancer, University of Bordeaux, INSERM U1218, INSERM CIC1401, Bordeaux, France
| | - Thomas Grellety
- Department of Medical Oncology, Institut Bergonié Unicancer, University of Bordeaux, INSERM U1218, INSERM CIC1401, Bordeaux, France
| | - Denis Larsimont
- Department of Pathology, Institut Jules Bordet, Brussels, Belgium
| | - Véronique Bécette
- Department of Pathology, Institut Curie-Hôpital René Huguenin, Saint-Cloud, France
| | - Olivier Kerdraon
- Department of Pathology, Centre René Gauducheau, Institut de Cancérologie de l'Ouest, Nantes, France
| | - Frédéric Bibeau
- Department of Pathology, Institut de Cancérologie de Montpellier (ICM), Montpellier, France
| | | | | | - Jeremy Thomas
- Department of Pathology, Edinburgh Cancer Centre, University of Edinburgh, Edinburgh, United Kingdom
| | - Jean-Christophe Tille
- Department of Pathologie, Hôpitaux Universitaires de Genève (HUG), Geneva, Switzerland
| | - Leen Slaets
- European Organisation for Research and Treatment of Cancer EORTC) Headquarters, Brussels, Belgium
| | - Alexandre Bodmer
- Swiss Group for Clinical Cancer Research (SAKK), Bern, Switzerland
- Department of Oncology, Hôpitaux Universitaires de Genève (HUG), Geneva, Switzerland
| | - Jonas Bergh
- Swedish Breast Cancer Group (SweBCG), Stockholm, Sweden
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
| | - David Cameron
- Anglo-Celtic Cooperative Oncology Group (ACCOG), Edinburgh, United Kingdom
- Department of Medical Oncology, Edinburgh Cancer Centre, University of Edinburgh, Edinburgh, United Kingdom
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16
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Pavlova S, Smardova J, Tom N, Trbusek M. Detection and Functional Analysis of TP53 Mutations in CLL. Methods Mol Biol 2019; 1881:63-81. [PMID: 30350198 DOI: 10.1007/978-1-4939-8876-1_6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Chronic lymphocytic leukemia (CLL) represents a prototype disease in which TP53 gene defects lead to inferior prognosis. Here, we present two distinct methodologies which can be used to identify TP53 mutations in CLL patients; both protocols are primarily intended for research purposes. The functional analysis of separated alleles in yeast (FASAY) can be flexibly adapted to a variable number of samples and provides an immediate functional readout of identified mutations. Amplicon-based next-generation sequencing then allows for a high throughput and accurately detects subclonal TP53 variants (sensitivity <1% of mutated cells).
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MESH Headings
- Alleles
- DNA Mutational Analysis/instrumentation
- DNA Mutational Analysis/methods
- Genes, Reporter/genetics
- High-Throughput Nucleotide Sequencing/instrumentation
- High-Throughput Nucleotide Sequencing/methods
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Mutation
- Neoplastic Cells, Circulating/pathology
- Saccharomyces cerevisiae/genetics
- Transfection/instrumentation
- Transfection/methods
- Tumor Suppressor Protein p53/genetics
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Affiliation(s)
- Sarka Pavlova
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czech Republic
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Jana Smardova
- Department of Pathology, University Hospital Brno, Brno, Czech Republic
| | - Nikola Tom
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Martin Trbusek
- Department of Internal Medicine, Hematology and Oncology, University Hospital Brno, Brno, Czech Republic.
- Faculty of Medicine, Masaryk University, Brno, Czech Republic.
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17
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Marengo B, Monti P, Miele M, Menichini P, Ottaggio L, Foggetti G, Pulliero A, Izzotti A, Speciale A, Garbarino O, Traverso N, Fronza G, Domenicotti C. Etoposide-resistance in a neuroblastoma model cell line is associated with 13q14.3 mono-allelic deletion and miRNA-15a/16-1 down-regulation. Sci Rep 2018; 8:13762. [PMID: 30213983 PMCID: PMC6137223 DOI: 10.1038/s41598-018-32195-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 07/17/2018] [Indexed: 01/07/2023] Open
Abstract
Drug resistance is the major obstacle in successfully treating high-risk neuroblastoma. The aim of this study was to investigate the basis of etoposide-resistance in neuroblastoma. To this end, a MYCN-amplified neuroblastoma cell line (HTLA-230) was treated with increasing etoposide concentrations and an etoposide-resistant cell line (HTLA-ER) was obtained. HTLA-ER cells, following etoposide exposure, evaded apoptosis by altering Bax/Bcl2 ratio. While both cell populations shared a homozygous TP53 mutation encoding a partially-functioning protein, a mono-allelic deletion of 13q14.3 locus, where the P53 inducible miRNAs 15a/16-1 are located, and the consequent miRNA down-regulation were detected only in HTLA-ER cells. This event correlated with BMI-1 oncoprotein up-regulation which caused a decrease in p16 tumor suppressor content and a metabolic adaptation of HTLA-ER cells. These results, taken collectively, highlight the role of miRNAs 15a/16-1 as markers of chemoresistance.
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Affiliation(s)
- Barbara Marengo
- Department of Experimental Medicine, General Pathology Section, University of Genova, Genova, Italy
| | - Paola Monti
- UOC Mutagenesis and Oncologic Prevention, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Mariangela Miele
- UOC Mutagenesis and Oncologic Prevention, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Paola Menichini
- UOC Mutagenesis and Oncologic Prevention, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Laura Ottaggio
- UOC Mutagenesis and Oncologic Prevention, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Giorgia Foggetti
- UOC Mutagenesis and Oncologic Prevention, IRCCS Ospedale Policlinico San Martino, Genova, Italy.,Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut, USA
| | | | - Alberto Izzotti
- UOC Mutagenesis and Oncologic Prevention, IRCCS Ospedale Policlinico San Martino, Genova, Italy.,Department of Health Sciences, University of Genova, Genova, Italy
| | - Andrea Speciale
- Department of Experimental Medicine, General Pathology Section, University of Genova, Genova, Italy
| | - Ombretta Garbarino
- Department of Experimental Medicine, General Pathology Section, University of Genova, Genova, Italy
| | - Nicola Traverso
- Department of Experimental Medicine, General Pathology Section, University of Genova, Genova, Italy
| | - Gilberto Fronza
- UOC Mutagenesis and Oncologic Prevention, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Cinzia Domenicotti
- Department of Experimental Medicine, General Pathology Section, University of Genova, Genova, Italy.
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18
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Independent Mechanisms Lead to Genomic Instability in Hodgkin Lymphoma: Microsatellite or Chromosomal Instability †. Cancers (Basel) 2018; 10:cancers10070233. [PMID: 30011886 PMCID: PMC6071189 DOI: 10.3390/cancers10070233] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 06/29/2018] [Accepted: 07/03/2018] [Indexed: 12/19/2022] Open
Abstract
Background: Microsatellite and chromosomal instability have been investigated in Hodgkin lymphoma (HL). Materials and Methods: We studied seven HL cell lines (five Nodular Sclerosis (NS) and two Mixed Cellularity (MC)) and patient peripheral blood lymphocytes (100 NS-HL and 23 MC-HL). Microsatellite instability (MSI) was assessed by PCR. Chromosomal instability and telomere dysfunction were investigated by FISH. DNA repair mechanisms were studied by transcriptomic and molecular approaches. Results: In the cell lines, we observed high MSI in L428 (4/5), KMH2, and HDLM2 (3/5), low MSI in L540, L591, and SUP-HD1, and none in L1236. NS-HL cell lines showed telomere shortening, associated with alterations of nuclear shape. Small cells were characterized by telomere loss and deletion, leading to chromosomal fusion, large nucleoplasmic bridges, and breakage/fusion/bridge (B/F/B) cycles, leading to chromosomal instability. The MC-HL cell lines showed substantial heterogeneity of telomere length. Intrachromosmal double strand breaks induced dicentric chromosome formation, high levels of micronucleus formation, and small nucleoplasmic bridges. B/F/B cycles induced complex chromosomal rearrangements. We observed a similar pattern in circulating lymphocytes of NS-HL and MC-HL patients. Transcriptome analysis confirmed the differences in the DNA repair pathways between the NS and MC cell lines. In addition, the NS-HL cell lines were radiosensitive and the MC-cell lines resistant to apoptosis after radiation exposure. Conclusions: In mononuclear NS-HL cells, loss of telomere integrity may present the first step in the ongoing process of chromosomal instability. Here, we identified, MSI as an additional mechanism for genomic instability in HL.
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19
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de Cremoux P, Biard L, Poirot B, Bertheau P, Teixeira L, Lehmann-Che J, Bouhidel FA, Merlet P, Espié M, Resche-Rigon M, Sotiriou C, Groheux D. 18FDG-PET/CT and molecular markers to predict response to neoadjuvant chemotherapy and outcome in HER2-negative advanced luminal breast cancers patients. Oncotarget 2018; 9:16343-16353. [PMID: 29662649 PMCID: PMC5893244 DOI: 10.18632/oncotarget.24674] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 02/26/2018] [Indexed: 11/25/2022] Open
Abstract
Background The efficacy of neoadjuvant chemotherapy regimens in advanced luminal breast cancer patients is difficult to predict. Intrinsic properties of breast tumors, including altered gene expression profile and dynamic evaluation of metabolic properties of tumor cells using positron emission tomography/computed tomography (PET/CT) of tumor cells, have been identified to guide patient's prognosis. The aim of this study is to determine if both analyses may improve the prediction of response to neoadjuvant chemotherapy in ER-positive / HER2-negative breast cancers (BCs) patients. Methods We used metabolic PET parameters, at diagnosis and after two cycles of chemotherapy and proliferation gene expression profile on biopsy at diagnosis, in particular, the genomic grade index (GGI) analyzed by reverse transcription and quantitative polymerase chain reaction (RT-qPCR). The pathological response was the surrogate endpoint. Results The change of FDG uptake between baseline PET and interim PET after 2 cycles of neoadjuvant chemotherapy (ΔSUVmax) was highly associated with pCR (p=0.008). We also observed an ability of P53 mutated status (p=0.042), in addition to histological grade (p=0. 0004), and PR expression (p=0.01) to predict pCR in ER-positive BCs, whereas no proliferation marker predicted pCR (P=0.39 for GGI). Finally, only ΔSUVmax was significantly associated with event free survival (p=0.047). Conclusions Our results confirm the predictive and prognostic value of tumor ΔSUVmax in ER-positive /HER2-negative advanced BCs patients. These findings can be helpful to select high-risk patients within trials investigating novel treatment strategies.
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Affiliation(s)
- Patricia de Cremoux
- Molecular Oncology Unit, Saint-Louis Hospital, Paris, France.,University Paris-Diderot, Sorbonne Paris Cité, INSERM/CNRS UMR944/7212, Paris, France
| | - Lucie Biard
- Department of Biostatistics, Saint-Louis Hospital, Paris, France.,University Paris-Diderot, Sorbonne Paris Cité, INSERM UMR 1153 ECSTRA team, Paris, France
| | - Brigitte Poirot
- Molecular Oncology Unit, Saint-Louis Hospital, Paris, France
| | - Philippe Bertheau
- Department of Pathology, Saint-Louis Hospital, Paris, France.,University Paris-Diderot, Sorbonne Paris Cité, INSERM UMR-S-1165, Paris, France
| | - Luis Teixeira
- University Paris-Diderot, Sorbonne Paris Cité, INSERM/CNRS UMR944/7212, Paris, France.,Breast Diseases Unit, Saint-Louis Hospital, Paris, France
| | - Jacqueline Lehmann-Che
- Molecular Oncology Unit, Saint-Louis Hospital, Paris, France.,University Paris-Diderot, Sorbonne Paris Cité, INSERM/CNRS UMR944/7212, Paris, France
| | | | - Pascal Merlet
- Department of Nuclear Medicine, Saint-Louis Hospital, Paris, France
| | - Marc Espié
- University Paris-Diderot, Sorbonne Paris Cité, INSERM/CNRS UMR944/7212, Paris, France.,Breast Diseases Unit, Saint-Louis Hospital, Paris, France
| | - Matthieu Resche-Rigon
- Department of Biostatistics, Saint-Louis Hospital, Paris, France.,University Paris-Diderot, Sorbonne Paris Cité, INSERM UMR 1153 ECSTRA team, Paris, France
| | - Christos Sotiriou
- Breast Cancer Translational Research Laboratory, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium
| | - David Groheux
- University Paris-Diderot, Sorbonne Paris Cité, INSERM/CNRS UMR944/7212, Paris, France.,Department of Nuclear Medicine, Saint-Louis Hospital, Paris, France
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20
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Billant O, Léon A, Le Guellec S, Friocourt G, Blondel M, Voisset C. The dominant-negative interplay between p53, p63 and p73: A family affair. Oncotarget 2018; 7:69549-69564. [PMID: 27589690 PMCID: PMC5342497 DOI: 10.18632/oncotarget.11774] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Accepted: 07/10/2016] [Indexed: 12/15/2022] Open
Abstract
The tumor suppression activity of p53 is frequently impaired in cancers even when a wild-type copy of the gene is still present, suggesting that a dominant-negative effect is exerted by some of p53 mutants and isoforms. p63 and p73, which are related to p53, have also been reported to be subjected to a similar loss of function, suggesting that a dominant-negative interplay might happen between p53, p63 and p73. However, to which extent p53 hotspot mutants and isoforms of p53, p63 and p73 are able to interfere with the tumor suppressive activity of their siblings as well as the underlying mechanisms remain undeciphered. Using yeast, we showed that a dominant-negative effect is widely spread within the p53/p63/p73 family as all p53 loss-of-function hotspot mutants and several of the isoforms of p53 and p73 tested exhibit a dominant-negative potential. In addition, we found that this dominant-negative effect over p53 wild-type is based on tetramer poisoning through the formation of inactive hetero-tetramers and does not rely on a prion-like mechanism contrary to what has been previously suggested. We also showed that mutant p53-R175H gains the ability to inhibit p63 and p73 activity by a mechanism that is only partially based on tetramerization.
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Affiliation(s)
- Olivier Billant
- Inserm UMR 1078, Université de Bretagne Occidentale, Faculté de Médecine et des Sciences de la Santé, Etablissement Français du Sang (EFS) Bretagne, CHRU Brest, Hôpital Morvan, Laboratoire de Génétique Moléculaire, Brest, France
| | - Alice Léon
- Inserm UMR 1078, Université de Bretagne Occidentale, Faculté de Médecine et des Sciences de la Santé, Etablissement Français du Sang (EFS) Bretagne, CHRU Brest, Hôpital Morvan, Laboratoire de Génétique Moléculaire, Brest, France
| | - Solenn Le Guellec
- Inserm UMR 1078, Université de Bretagne Occidentale, Faculté de Médecine et des Sciences de la Santé, Etablissement Français du Sang (EFS) Bretagne, CHRU Brest, Hôpital Morvan, Laboratoire de Génétique Moléculaire, Brest, France
| | - Gaëlle Friocourt
- Inserm UMR 1078, Université de Bretagne Occidentale, Faculté de Médecine et des Sciences de la Santé, Etablissement Français du Sang (EFS) Bretagne, CHRU Brest, Hôpital Morvan, Laboratoire de Génétique Moléculaire, Brest, France
| | - Marc Blondel
- Inserm UMR 1078, Université de Bretagne Occidentale, Faculté de Médecine et des Sciences de la Santé, Etablissement Français du Sang (EFS) Bretagne, CHRU Brest, Hôpital Morvan, Laboratoire de Génétique Moléculaire, Brest, France
| | - Cécile Voisset
- Inserm UMR 1078, Université de Bretagne Occidentale, Faculté de Médecine et des Sciences de la Santé, Etablissement Français du Sang (EFS) Bretagne, CHRU Brest, Hôpital Morvan, Laboratoire de Génétique Moléculaire, Brest, France
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21
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Zerdoumi Y, Lanos R, Raad S, Flaman JM, Bougeard G, Frebourg T, Tournier I. Germline TP53 mutations result into a constitutive defect of p53 DNA binding and transcriptional response to DNA damage. Hum Mol Genet 2018; 26:2591-2602. [PMID: 28369373 PMCID: PMC5886078 DOI: 10.1093/hmg/ddx106] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 03/13/2017] [Indexed: 01/13/2023] Open
Abstract
Li-Fraumeni Syndrome (LFS) results from heterozygous germline mutations of TP53, encoding a key transcriptional factor activated in response to DNA damage. We have recently shown, from a large LFS series, that dominant-negative missense mutations are the most clinically severe and, thanks to a new p53 functional assay in lymphocytes, that they alter the p53 transcriptional response to DNA damage more drastically than null mutations. In this study, we first confirmed this observation by performing the p53 functional assay in lymphocytes from 56 TP53 mutation carriers harbouring 35 distinct alterations. Then, to compare the impact of the different types of germline TP53 mutations on DNA binding, we performed chromatin immunoprecipitation-sequencing (ChIP-Seq) in lymphocytes exposed to doxorubicin. ChIP-Seq performed in wild-type TP53 control lymphocytes accurately mapped 1287 p53-binding sites. New p53-binding sites were validated using a functional assay in yeast. ChIP-Seq analysis of LFS lymphocytes carrying TP53 null mutations (p.P152Rfs*18 or complete deletion) or the low penetrant ‘Brazilian’ p.R337H mutation revealed a moderate decrease of p53-binding sites (949, 580 and 620, respectively) and of ChIP-Seq peak depths. In contrast, analysis of LFS lymphocytes with TP53 dominant-negative missense mutations p.R273H or p.R248W revealed only 310 and 143 p53-binding sites, respectively, and the depths of the corresponding peaks were drastically reduced. Altogether, our results show that TP53 mutation carriers exhibit a constitutive defect of the transcriptional response to DNA damage and that the clinical severity of TP53 dominant-negative missense mutations is explained by a massive and global alteration of p53 DNA binding.
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Affiliation(s)
- Yasmine Zerdoumi
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F 76000, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Raphaël Lanos
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F 76000, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Sabine Raad
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F 76000, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Jean-Michel Flaman
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F 76000, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Gaëlle Bougeard
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F 76000, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Thierry Frebourg
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F 76000, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Isabelle Tournier
- Normandie University, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics, F 76000, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
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22
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Zlamalikova L, Moulis M, Ravcukova B, Liskova K, Malcikova J, Salek D, Jarkovsky J, Svitakova M, Hrabalkova R, Smarda J, Smardova J. Complex analysis of the TP53 tumor suppressor in mantle cell and diffuse large B-cell lymphomas. Oncol Rep 2017; 38:2535-2542. [PMID: 28791403 DOI: 10.3892/or.2017.5891] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Accepted: 07/14/2017] [Indexed: 11/05/2022] Open
Abstract
Mutations and deletions of the tumor suppressor TP53 gene are the most frequent genetic alterations detected in human tumors, though they are rather less frequent in lymphomas. However, acquisition of the TP53 mutation was demonstrated to be one of the characteristic markers in mantle cell lymphoma (MCL) and diffuse large B-cell lymphoma (DLBCL) and prognostic value of the TP53 status has been recognized for these diseases. We present the complex analysis of the TP53 aberrations in 57 cases of MCL and 131 cases of DLBCL. The TP53 status was determined by functional analyses in yeast (FASAY) followed by cDNA and gDNA sequencing. The level of the p53 protein was assessed by immunoblotting and loss of the TP53-specific locus 17p13.3 was detected by FISH. Altogether, we detected 13 TP53 mutations among MCL cases (22.8%) and 29 TP53 mutations in 26 from 131 DLBCL cases (19.8%). The ratio of missense TP53 mutations was 76.9% in MCL and 82.8% in DLBCL. The frequency of TP53 locus deletion was rather low in both diseases, reaching 9.3% in MCL and 15.3% in DLBCL. The presence of TP53 mutation was associated with shorter overall survival (OS) and progression-free survival (PFS) in MCL. Among DLBCL cases, the TP53 mutations shortened both OS and PFS of patients treated with R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone) and decreased both OS and PFS of patients with secondary DLBCL disease.
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Affiliation(s)
| | - Mojmir Moulis
- Department of Pathology, University Hospital, Brno, Czech Republic
| | - Barbora Ravcukova
- Molecular Genetics Laboratory, Centre for Cardiovascular Surgery and Transplantation, Brno, Czech Republic
| | | | - Jitka Malcikova
- Central European Institute of Technology (CEITEC), Masaryk University, Brno, Czech Republic
| | - David Salek
- Department of Internal Medicine - Hematology and Oncology, University Hospital, Brno, Czech Republic
| | - Jiri Jarkovsky
- Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Miluse Svitakova
- Department of Pathology, University Hospital, Brno, Czech Republic
| | | | - Jan Smarda
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jana Smardova
- Department of Pathology, University Hospital, Brno, Czech Republic
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23
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Pal K, Bystry V, Reigl T, Demko M, Krejci A, Touloumenidou T, Stalika E, Tichy B, Ghia P, Stamatopoulos K, Pospisilova S, Malcikova J, Darzentas N. GLASS: assisted and standardized assessment of gene variations from Sanger sequence trace data. Bioinformatics 2017; 33:3802-3804. [DOI: 10.1093/bioinformatics/btx423] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 07/12/2017] [Indexed: 11/14/2022] Open
Affiliation(s)
- Karol Pal
- CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Vojtech Bystry
- CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Tomas Reigl
- CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Martin Demko
- CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Adam Krejci
- CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Tasoula Touloumenidou
- Hematology Department and HCT Unit, G. Papanicolaou Hospital, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Evangelia Stalika
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Boris Tichy
- CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Paolo Ghia
- Division of Molecular Oncology, Department of Onco-Hematology, IRCCS San Raffaele Scientific Institute, Università Vita-Salute San Raffaele, Milan, Italy
| | - Kostas Stamatopoulos
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Sarka Pospisilova
- CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- Department of Internal Medicine--Hematology and Oncology, University Hospital Brno, Brno, Czech Republic
| | - Jitka Malcikova
- CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- Department of Internal Medicine--Hematology and Oncology, University Hospital Brno, Brno, Czech Republic
| | - Nikos Darzentas
- CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
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24
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Abstract
Since its discovery in 1979, p53 has been on the forefront of cancer research. It is considered a master gene of cancer suppression and is found mutated in around 50% of all human tumors. In addition, the progressive identification of p53-related transcription factors p63 and p73 as well as their multiple isoforms have added further layers of complexity to an already dense network. Among the numerous models used to unravel the p53 family mysteries, S. cerevisiae has been particularly useful. This seemingly naive model allows the expression of a functional human p53 and thus the assessment of p53 intrinsic transcriptional activity. The aim of this article is to review the various contributions that the budding yeast has made to the understanding of p53, p63 and p73 biology and to envision new possible directions for yeast-based assays in the field of cancer as well as other p53-family-related diseases.
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25
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Wang R, Sumarpo A, Saiki Y, Chen N, Sunamura M, Horii A. ABCB1 Is Upregulated in Acquisition of Taxane Resistance: Lessons from Esophageal Squamous Cell Carcinoma Cell Lines. TOHOKU J EXP MED 2017; 240:295-301. [PMID: 27941276 DOI: 10.1620/tjem.240.295] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Esophageal cancer is one of the common malignancies worldwide, particularly in eastern African and Asian countries including Japan. Taxane (paclitaxel or docetaxel) is one of the effective chemotherapeutic reagents for patients with esophageal cancer, but acquisition of chemoresistance frequently occurs; this is one of the most frequent causes for therapeutic failure. In this study, we established three taxane resistant esophageal squamous cell carcinoma cell lines and explored possible mechanisms for the acquisition of chemoresistance. Microarray analyses indicated that the ABCB1 (ATP binding cassette subfamily B member 1) gene was significantly upregulated in taxane resistant esophageal cancer cell lines. Moreover, we found that siRNA mediated ABCB1 knockdown successfully restored drug sensitivity in both paclitaxel and docetaxel resistant esophageal cancer cell lines. In conclusion, we propose that ABCB1 might play a pivotal role in acquisition of taxane resistance and could be a promising target for treatment of patients with esophageal cancer after acquisition of taxane resistance.
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Affiliation(s)
- Ruobing Wang
- Department of Molecular Pathology, Tohoku University School of Medicine
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26
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Hekmat‐Scafe DS, Brownell SE, Seawell PC, Malladi S, Imam JFC, Singla V, Bradon N, Cyert MS, Stearns T. Using yeast to determine the functional consequences of mutations in the human p53 tumor suppressor gene: An introductory course-based undergraduate research experience in molecular and cell biology. BIOCHEMISTRY AND MOLECULAR BIOLOGY EDUCATION : A BIMONTHLY PUBLICATION OF THE INTERNATIONAL UNION OF BIOCHEMISTRY AND MOLECULAR BIOLOGY 2017; 45:161-178. [PMID: 27873457 PMCID: PMC5516179 DOI: 10.1002/bmb.21024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 07/17/2016] [Accepted: 08/24/2016] [Indexed: 05/22/2023]
Abstract
The opportunity to engage in scientific research is an important, but often neglected, component of undergraduate training in biology. We describe the curriculum for an innovative, course-based undergraduate research experience (CURE) appropriate for a large, introductory cell and molecular biology laboratory class that leverages students' high level of interest in cancer. The course is highly collaborative and emphasizes the analysis and interpretation of original scientific data. During the course, students work in teams to characterize a collection of mutations in the human p53 tumor suppressor gene via expression and analysis in yeast. Initially, student pairs use both qualitative and quantitative assays to assess the ability of their p53 mutant to activate expression of reporter genes, and they localize their mutation within the p53 structure. Through facilitated discussion, students suggest possible molecular explanations for the transactivation defects displayed by their p53 mutants and propose experiments to test these hypotheses that they execute during the second part of the course. They use a western blot to determine whether mutant p53 levels are reduced, a DNA-binding assay to test whether recognition of any of three p53 target sequences is compromised, and fluorescence microscopy to assay nuclear localization. Students studying the same p53 mutant periodically convene to discuss and interpret their combined data. The course culminates in a poster session during which students present their findings to peers, instructors, and the greater biosciences community. Based on our experience, we provide recommendations for the development of similar large introductory lab courses. © 2016 by The International Union of Biochemistry and Molecular Biology, 45(2):161-178, 2017.
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Affiliation(s)
| | - Sara E. Brownell
- Department of BiologyStanford UniversityStanfordCalifornia94305
- Present address:
School of Life Sciences, Arizona State UniversityTempeAZ85287
| | | | | | | | - Veena Singla
- Department of BiologyStanford UniversityStanfordCalifornia94305
- Present address:
Health and Environment Program, Natural Resources Defense CouncilSan FranciscoCA94104
| | - Nicole Bradon
- Department of BiologyStanford UniversityStanfordCalifornia94305
| | - Martha S. Cyert
- Department of BiologyStanford UniversityStanfordCalifornia94305
| | - Tim Stearns
- Department of BiologyStanford UniversityStanfordCalifornia94305
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27
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Nasr R, Marçais A, Hermine O, Bazarbachi A. Overview of Targeted Therapies for Adult T-Cell Leukemia/Lymphoma. Methods Mol Biol 2017; 1582:197-216. [PMID: 28357672 DOI: 10.1007/978-1-4939-6872-5_15] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Adult T-Cell Leukemia/lymphoma (ATL) is the first human malignancy associated with a chronic infection by a retrovirus, the human T-cell lymphotropic virus type I (HTLV-I). ATL occurs, after a long latency period, only in about 5% of 10-20 millions infected individuals. ATL has a dismal prognosis with a median survival of less than 1 year, mainly due to its resistance to chemotherapy and to a profound immunosuppression. The viral oncoprotein, Tax, plays a major role in ATL oncogenic transformation by interfering with cell proliferation, cell cycle, apoptosis, and DNA repair. The diversity in ATL clinical features and prognosis led to Shimoyama classification of ATL into four clinical subtypes (acute, lymphoma, chronic, and smoldering) requiring different therapeutic strategies. Clinical trials, mainly conducted in Japan, demonstrated that combination of chemotherapy could induce acceptable response rate in the lymphoma subtype but not in acute ATL. However, long-term prognosis remains poor for both subtypes, due to a high relapse rate. Similarly, whether managed by a watchful waiting or treated with chemotherapy, the indolent forms (smoldering and chronic) have a poor long-term outcome. An international meta-analysis showed improved survival in the leukemic subtypes of ATL (chronic, smoldering as well as a subset of the acute subtype) with the use of two antiviral agents, zidovudine and interferon-alpha, and accordingly, this combination should be considered the standard first-line treatment in this context. ATL patients with lymphoma subtype benefit from induction chemotherapy, given simultaneously or sequentially with an antiviral combination of zidovudine and interferon-alpha. Allogeneic hematopoietic stem cells transplantation remains a promising and potentially curative approach but is limited to a small number of patients. Novel drugs such as arsenic trioxide in combination with interferon-alpha or monoclonal antibodies such as anti-CXCR4 have shown promising results and warrant further investigation.
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Affiliation(s)
- Rihab Nasr
- Faculty of Medicine, Department of Anatomy, Cell Biology and Physiology, Americain University of Beirut, 113-6044, Beirut, Lebanon
| | - Ambroise Marçais
- Department of Hematology, Necker Hospital, University of Paris Descartes, 149, rue de Sèvres, Paris, France
| | - Olivier Hermine
- Department of Hematology, Necker Hospital, University of Paris Descartes, 149, rue de Sèvres, Paris, France
| | - Ali Bazarbachi
- Faculty of Medicine, Department of Anatomy, Cell Biology and Physiology, Americain University of Beirut, 113-6044, Beirut, Lebanon. .,Faculty of Medicine, Department of Internal Medicine, American University of Beirut, 113-6044, Beirut, Lebanon.
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28
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Touati N, Tryfonidis K, Caramia F, Bonnefoi H, Cameron D, Slaets L, Parker BS, Loi S. Correlation between severe infection and breast cancer metastases in the EORTC 10994/BIG 1-00 trial: Investigating innate immunity as a tumour suppressor in breast cancer. Eur J Cancer 2016; 72:95-102. [PMID: 28027521 DOI: 10.1016/j.ejca.2016.11.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/14/2016] [Accepted: 11/15/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Breast cancer cells which express an innate immune signature regulated by interferon regulatory factor 7 (IRF7) have reduced metastatic potential. Infections can induce interferon signalling and may activate an anti-tumour immune response. We investigated whether 'severe infection' can be a clinical surrogate of this phenomenon and/or the presence of high levels of the IRF7 signature at diagnosis before neo-adjuvant chemotherapy (NACT) is associated with a reduced distant relapse risk, specifically in bones. METHODS Clinical data of the European Organisation for Research and Treatment of Cancer 10994/BIG 1-00 phase III trial which randomised 1856 patients treated with NACT between 2001 and 2006, were used. Severe infection was febrile neutropenia or any other grade III-IV infective adverse event during NACT. The IRF7 signature was calculated from gene expression data available for 160 patients on a pre-NACT biopsy. Cox models for distant relapse-free interval (DRFI) investigated the effect of the severe infection and IRF7. Fine and Gray models studied the occurrence of bone metastases as first distant relapse. RESULTS Median follow-up was 4.8 years. No association between severe infection and DFRI was observed in the entire population (n = 1615 eligible patients) hazard ratio [(HR] = 0.99, 90% CI, confidence interval [CI] = 0.81-1.20). For IRF7 (N = 160), a trend towards an association with DRFI was observed (HR = 0.89 for a 50 unit increase, 90% CI = 0.78-1.02, p = 0.081). Higher levels of the IRF7 signature were significantly associated with a decreased bone metastases risk: (HR = 0.76 for a 50 unit increase, 95% CI, 0.62-0.94, p = 0.012). CONCLUSIONS In this study it was shown that severe infection during NACT was not associated with decreased DRFI while high expression of the IRF7 gene signature was significantly associated with reduced bone relapse. This result may be useful for future adjuvant bisphosphonate/denosumab use.
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Affiliation(s)
- Nathan Touati
- EORTC, Statistics Department, Avenue Emmanuel Mounier 83b11, 1200 Brussels, Belgium.
| | | | - Franco Caramia
- Peter MacCallum Cancer Centre, University of Melbourne, Melbourne, Victoria, Australia.
| | - Hervé Bonnefoi
- Department of Medical Oncology, Institut Bergonié Unicancer, INSERM CIC1401, Bordeaux, France.
| | - David Cameron
- Western General Hospital, Edinburgh Cancer Centre, Crewe Road South, GB Edinburgh EH4 2XU, UK.
| | - Leen Slaets
- EORTC, Statistics Department, Avenue Emmanuel Mounier 83b11, 1200 Brussels, Belgium.
| | - Belinda S Parker
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Australia.
| | - Sherene Loi
- Peter MacCallum Cancer Centre, University of Melbourne, Melbourne, Victoria, Australia.
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29
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Sharma V, Monti P, Fronza G, Inga A. Human transcription factors in yeast: the fruitful examples of P53 and NF-кB. FEMS Yeast Res 2016; 16:fow083. [PMID: 27683095 DOI: 10.1093/femsyr/fow083] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2016] [Indexed: 12/31/2022] Open
Abstract
The observation that human transcription factors (TFs) can function when expressed in yeast cells has stimulated the development of various functional assays to investigate (i) the role of binding site sequences (herein referred to as response elements, REs) in transactivation specificity, (ii) the impact of polymorphic nucleotide variants on transactivation potential, (iii) the functional consequences of mutations in TFs and (iv) the impact of cofactors or small molecules. These approaches have found applications in basic as well as applied research, including the identification and the characterisation of mutant TF alleles from clinical samples. The ease of genome editing of yeast cells and the availability of regulated systems for ectopic protein expression enabled the development of quantitative reporter systems, integrated at a chosen chromosomal locus in isogenic yeast strains that differ only at the level of a specific RE targeted by a TF or for the expression of distinct TF alleles. In many cases, these assays were proven predictive of results in higher eukaryotes. The potential to work in small volume formats and the availability of yeast strains with modified chemical uptake have enhanced the scalability of these approaches. Next to well-established one-, two-, three-hybrid assays, the functional assays with non-chimeric human TFs enrich the palette of opportunities for functional characterisation. We review ∼25 years of research on human sequence-specific TFs expressed in yeast, with an emphasis on the P53 and NF-кB family of proteins, highlighting outcomes, advantages, challenges and limitations of these heterologous assays.
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Affiliation(s)
- Vasundhara Sharma
- Centre for Integrative Biology, CIBIO, University of Trento, via Sommarive 9, 38123, Trento, Italy
| | - Paola Monti
- U.O.C. Mutagenesi, IRCCS AOU San Martino-IST, Largo R. Benzi, 10, 16132, Genova, Italy
| | - Gilberto Fronza
- U.O.C. Mutagenesi, IRCCS AOU San Martino-IST, Largo R. Benzi, 10, 16132, Genova, Italy
| | - Alberto Inga
- Centre for Integrative Biology, CIBIO, University of Trento, via Sommarive 9, 38123, Trento, Italy
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Volejnikova J, Bajciova V, Sulovska L, Geierova M, Buriankova E, Jarosova M, Hajduch M, Sterba J, Mihal V. Bone marrow metastasis of malignant melanoma in childhood arising within a congenital melanocytic nevus. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2016; 160:456-60. [PMID: 27049531 DOI: 10.5507/bp.2016.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 03/23/2016] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Malignant melanoma in childhood is infrequent and can arise within congenital melanocytic nevi. Spread of malignant melanoma to the bone marrow, especially in children, is extremely rare. METHODS AND RESULTS Reported is a case of a 5-year-old boy with a congenital large melanocytic nevus of the head and neck who presented with a short history of low back and leg pain, fever and cervical lymphadenopathy. Despite regular follow-up by a dermatologist and plastic surgeon and repeatedly negative histology of previous partial excisions, diffuse bone marrow infiltration with malignant melanoma was diagnosed. The primary site was identified in the post-excision area. The disease progressed rapidly on ipilimumab immunotherapy and led to death at four months from the diagnosis. CONCLUSION Surveillance is indispensable in children with a predisposition to melanoma and nonspecific symptoms such as bone pain, gait impairment or cytopenia, should always be taken into account.
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Affiliation(s)
- Jana Volejnikova
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University Olomouc and University Hospital Olomouc, Czech Republic.,Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
| | - Viera Bajciova
- Department of Pediatric Oncology, Masaryk University, Brno and University Hospital Brno, Czech Republic
| | - Lucie Sulovska
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University Olomouc and University Hospital Olomouc, Czech Republic
| | - Marie Geierova
- Department of Clinical and Molecular Pathology, Faculty of Medicine and Dentistry, Palacky University Olomouc and University Hospital Olomouc, Czech Republic
| | - Eva Buriankova
- Department of Nuclear Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc and University Hospital Olomouc, Czech Republic
| | - Marie Jarosova
- Department of Hemato-Oncology, Faculty of Medicine and Dentistry, Palacky University Olomouc and University Hospital Olomouc, Czech Republic
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
| | - Jaroslav Sterba
- Department of Pediatric Oncology, Masaryk University, Brno and University Hospital Brno, Czech Republic
| | - Vladimir Mihal
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University Olomouc and University Hospital Olomouc, Czech Republic.,Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
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31
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Smardova J, Liskova K, Ravcukova B, Malcikova J, Hausnerova J, Svitakova M, Hrabalkova R, Zlamalikova L, Stano-Kozubik K, Blahakova I, Speldova J, Jarkovsky J, Smarda J. Complex analysis of the p53 tumor suppressor in lung carcinoma. Oncol Rep 2015; 35:1859-67. [PMID: 26718964 DOI: 10.3892/or.2015.4533] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 11/10/2015] [Indexed: 11/05/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths worldwide. The p53 tumor suppressor is a transcription factor controlling expression of its target genes in response to various stress stimuli. Mutations of the TP53 gene occur very frequently in lung carcinomas and they play an important role in both oncogenic transformation of lung epithelial cells and lung carcinoma progression. We determined the TP53 status in 42 samples of squamous cell lung carcinoma (SQCC) and 56 samples of lung adenocarcinoma (AC) by the functional analysis FASAY and its variant called split assay. Altogether, we detected 64 TP53 mutations in 63 patients and analyzed them by cDNA and gDNA sequencing. The TP53 mutations were found in 76.2% (32/42) of SQCC cases, and 55.4% (31/56) of ACs. Immunoblotting revealed the p53 protein accumulation in 18 samples (42.9%) among SQCC cases and 19 samples (33.9%) among AC cases. Using fluorescence in situ hybridization we detected loss of the TP53-specific 17p13.3 locus in 23 from 41 analyzed SQCC samples (56.1%) and in 20 from 54 analyzed AC samples (37.0%). We did not find any statistically significant differences in overall and disease-free survival in relation to TP53 status.
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Affiliation(s)
- Jana Smardova
- Department of Pathology, University Hospital, Brno, Czech Republic
| | | | - Barbora Ravcukova
- Molecular Genetics Laboratory, Centre for Cardiovascular Surgery and Transplantation, Brno, Czech Republic
| | - Jitka Malcikova
- Central European Institute of Technology (CEITEC), Masaryk University, Brno, Czech Republic
| | - Jitka Hausnerova
- Department of Pathology, University Hospital, Brno, Czech Republic
| | - Miluse Svitakova
- Department of Pathology, University Hospital, Brno, Czech Republic
| | | | | | - Katerina Stano-Kozubik
- Central European Institute of Technology (CEITEC), Masaryk University, Brno, Czech Republic
| | - Ivona Blahakova
- Central European Institute of Technology (CEITEC), Masaryk University, Brno, Czech Republic
| | - Jana Speldova
- Department of Respiratory Diseases and TB, University Hospital, Brno, Czech Republic
| | - Jiri Jarkovsky
- Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Jan Smarda
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
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Ablain J, Poirot B, Esnault C, Lehmann-Che J, de Thé H. p53 as an Effector or Inhibitor of Therapy Response. Cold Spring Harb Perspect Med 2015; 6:a026260. [PMID: 26637438 DOI: 10.1101/cshperspect.a026260] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Although integrity of the p53 signaling pathway in a given tumor was expected to be a critical determinant of response to therapies, most clinical studies failed to link p53 status and treatment outcome. Here, we present two opposite situations: one in which p53 is an essential effector of cure by targeted leukemia therapies and another one in advanced breast cancers in which p53 inactivation is required for the clinical efficacy of dose-dense chemotherapy. If p53 promotes or blocks therapy response, therapies must be tailored on its status in individual tumors.
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Affiliation(s)
- Julien Ablain
- Université Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Hôpital St. Louis, 75475 Paris, France INSERM UMR 944, Equipe Labellisée par la Ligue Nationale contre le Cancer, Hôpital St. Louis, 75475 Paris, France CNRS UMR 7212, Hôpital St. Louis, 75475 Paris, France
| | - Brigitte Poirot
- Université Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Hôpital St. Louis, 75475 Paris, France INSERM UMR 944, Equipe Labellisée par la Ligue Nationale contre le Cancer, Hôpital St. Louis, 75475 Paris, France CNRS UMR 7212, Hôpital St. Louis, 75475 Paris, France Assistance Publique des Hôpitaux de Paris, Oncologie Moléculaire, Hôpital St. Louis, 75475 Paris, France
| | - Cécile Esnault
- Université Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Hôpital St. Louis, 75475 Paris, France INSERM UMR 944, Equipe Labellisée par la Ligue Nationale contre le Cancer, Hôpital St. Louis, 75475 Paris, France CNRS UMR 7212, Hôpital St. Louis, 75475 Paris, France
| | - Jacqueline Lehmann-Che
- Université Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Hôpital St. Louis, 75475 Paris, France INSERM UMR 944, Equipe Labellisée par la Ligue Nationale contre le Cancer, Hôpital St. Louis, 75475 Paris, France CNRS UMR 7212, Hôpital St. Louis, 75475 Paris, France Assistance Publique des Hôpitaux de Paris, Oncologie Moléculaire, Hôpital St. Louis, 75475 Paris, France
| | - Hugues de Thé
- Université Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Hôpital St. Louis, 75475 Paris, France INSERM UMR 944, Equipe Labellisée par la Ligue Nationale contre le Cancer, Hôpital St. Louis, 75475 Paris, France CNRS UMR 7212, Hôpital St. Louis, 75475 Paris, France Assistance Publique des Hôpitaux de Paris, Oncologie Moléculaire, Hôpital St. Louis, 75475 Paris, France Collège de France, 75005 Paris, France
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Overexpression of yeast thioredoxin TRX2 reduces p53-mediated cell death in yeast. Appl Microbiol Biotechnol 2015; 99:8619-28. [DOI: 10.1007/s00253-015-6886-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 07/22/2015] [Accepted: 07/25/2015] [Indexed: 01/08/2023]
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Weisberg E, Halilovic E, Cooke VG, Nonami A, Ren T, Sanda T, Simkin I, Yuan J, Antonakos B, Barys L, Ito M, Stone R, Galinsky I, Cowens K, Nelson E, Sattler M, Jeay S, Wuerthner JU, McDonough SM, Wiesmann M, Griffin JD. Inhibition of Wild-Type p53-Expressing AML by the Novel Small Molecule HDM2 Inhibitor CGM097. Mol Cancer Ther 2015. [PMID: 26206331 DOI: 10.1158/1535-7163.mct-15-0429] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The tumor suppressor p53 is a key regulator of apoptosis and functions upstream in the apoptotic cascade by both indirectly and directly regulating Bcl-2 family proteins. In cells expressing wild-type (WT) p53, the HDM2 protein binds to p53 and blocks its activity. Inhibition of HDM2:p53 interaction activates p53 and causes apoptosis or cell-cycle arrest. Here, we investigated the ability of the novel HDM2 inhibitor CGM097 to potently and selectively kill WT p53-expressing AML cells. The antileukemic effects of CGM097 were studied using cell-based proliferation assays (human AML cell lines, primary AML patient cells, and normal bone marrow samples), apoptosis, and cell-cycle assays, ELISA, immunoblotting, and an AML patient-derived in vivo mouse model. CGM097 potently and selectively inhibited the proliferation of human AML cell lines and the majority of primary AML cells expressing WT p53, but not mutant p53, in a target-specific manner. Several patient samples that harbored mutant p53 were comparatively unresponsive to CGM097. Synergy was observed when CGM097 was combined with FLT3 inhibition against oncogenic FLT3-expressing cells cultured both in the absence as well as the presence of cytoprotective stromal-secreted cytokines, as well as when combined with MEK inhibition in cells with activated MAPK signaling. Finally, CGM097 was effective in reducing leukemia burden in vivo. These data suggest that CGM097 is a promising treatment for AML characterized as harboring WT p53 as a single agent, as well as in combination with other therapies targeting oncogene-activated pathways that drive AML.
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Affiliation(s)
- Ellen Weisberg
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts.
| | - Ensar Halilovic
- Novartis Institutes of Biomedical Research, Cambridge, Massachusetts
| | - Vesselina G Cooke
- Novartis Institutes of Biomedical Research, Cambridge, Massachusetts
| | - Atsushi Nonami
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Tao Ren
- National Screening Laboratory for the Regional Centers of Excellence in Biodefense and Emerging Infectious Diseases Research, Harvard Medical School, Boston, Massachusetts
| | - Takaomi Sanda
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Irene Simkin
- Molecular Genetics Core, Boston University School of Medicine, Boston, Massachusetts
| | - Jing Yuan
- Novartis Institutes of Biomedical Research, Cambridge, Massachusetts
| | - Brandon Antonakos
- Novartis Institutes of Biomedical Research, Cambridge, Massachusetts
| | - Louise Barys
- Novartis Institutes of Biomedical Research, Basel, Switzerland
| | - Moriko Ito
- Novartis Institutes of Biomedical Research, Basel, Switzerland
| | - Richard Stone
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Ilene Galinsky
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Kristen Cowens
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Erik Nelson
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Martin Sattler
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Sebastien Jeay
- Novartis Institutes of Biomedical Research, Basel, Switzerland
| | | | - Sean M McDonough
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Marion Wiesmann
- Novartis Institutes of Biomedical Research, Basel, Switzerland
| | - James D Griffin
- Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts.
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Bally C, Renneville A, Preudhomme C, Legrand M, Adès L, de Thé H, Fenaux P, Lehmann-Che J. Comparison of TP53 mutations screening by functional assay of separated allele in yeast and next-generation sequencing in myelodysplastic syndromes. Leuk Res 2015; 39:S0145-2126(15)30344-1. [PMID: 26271412 DOI: 10.1016/j.leukres.2015.07.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 06/03/2015] [Accepted: 07/02/2015] [Indexed: 11/15/2022]
Abstract
TP53 mutations are major prognostic factors in many hematological malignancies including acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS). Next-generation sequencing (NGS) has improved the detection of such mutations by identifying small mutated clones but functional method like FASAY (functional assay of separated allele in yeast) may prove interesting. We compared the detection of TP53 mutations by FASAY and NGS in 91 patients with AML or MDS. By FASAY, 91% of assays were evaluable and 47 patients (57%) had a functional and 36 (43%) a non-functional p53 protein. FASAY could not conclude in 8 cases (9%), mainly because of poor RNA quality. No TP53 mutation was found using NGS in 50 cases (55%), and at least one mutation was detected in 41 cases (45%). The p53 status was concordant between FASAY and NGS in 95% (79/83) of cases. The four discordances included mutations detected by FASAY only in two cases, and by NGS only in two cases. Mutations not detected by NGS consisted of insertions in intronic regions, which were not analyzed by this assay. Mutations not detected by FASAY were mutations for which the percentage of mutated allele was less than 10%, including one mutation reported as non-deleterious in the IARC database. Overall, our data suggest that FASAY is an effective and reliable method to detect TP53 mutations in AML and MDS, which allows the assessment of the protein functionality, contrary to a sequencing approach.
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Affiliation(s)
- Cécile Bally
- Hematology Clinical Unit, Hospital Saint Louis, AP-HP, Paris, France
| | | | | | - M Legrand
- Molecular Oncology Unit, Department of Biochemistry, Hospital Saint Louis, AP-HP, Paris, France
| | - Lionel Adès
- Hematology Clinical Unit, Hospital Saint Louis, AP-HP, Paris, France
| | - Hugues de Thé
- Molecular Oncology Unit, Department of Biochemistry, Hospital Saint Louis, AP-HP, Paris, France; Univ Paris Diderot, Sorbonne Paris Cité, CNRS UMR7212/INSERM U944, Paris, France
| | - Pierre Fenaux
- Hematology Clinical Unit, Hospital Saint Louis, AP-HP, Paris, France
| | - Jacqueline Lehmann-Che
- Molecular Oncology Unit, Department of Biochemistry, Hospital Saint Louis, AP-HP, Paris, France; Univ Paris Diderot, Sorbonne Paris Cité, CNRS UMR7212/INSERM U944, Paris, France.
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Kreuzinger C, Gamperl M, Wolf A, Heinze G, Geroldinger A, Lambrechts D, Boeckx B, Smeets D, Horvat R, Aust S, Hamilton G, Zeillinger R, Cacsire Castillo-Tong D. Molecular characterization of 7 new established cell lines from high grade serous ovarian cancer. Cancer Lett 2015; 362:218-28. [DOI: 10.1016/j.canlet.2015.03.040] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 03/23/2015] [Accepted: 03/31/2015] [Indexed: 12/27/2022]
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Tebaldi T, Zaccara S, Alessandrini F, Bisio A, Ciribilli Y, Inga A. Whole-genome cartography of p53 response elements ranked on transactivation potential. BMC Genomics 2015; 16:464. [PMID: 26081755 PMCID: PMC4470028 DOI: 10.1186/s12864-015-1643-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 05/20/2015] [Indexed: 11/18/2022] Open
Abstract
Background Many recent studies using ChIP-seq approaches cross-referenced to trascriptome data and also to potentially unbiased in vitro DNA binding selection experiments are detailing with increasing precision the p53-directed gene regulatory network that, nevertheless, is still expanding. However, most experiments have been conducted in established cell lines subjected to specific p53-inducing stimuli, both factors potentially biasing the results. Results We developed p53retriever, a pattern search algorithm that maps p53 response elements (REs) and ranks them according to predicted transactivation potentials in five classes. Besides canonical, full site REs, we developed specific pattern searches for non-canonical half sites and 3/4 sites and show that they can mediate p53-dependent responsiveness of associated coding sequences. Using ENCODE data, we also mapped p53 REs in about 44,000 distant enhancers and identified a 16-fold enrichment for high activity REs within those sites in the comparison with genomic regions near transcriptional start sites (TSS). Predictions from our pattern search were cross-referenced to ChIP-seq, ChIP-exo, expression, and various literature data sources. Based on the mapping of predicted functional REs near TSS, we examined expression changes of thirteen genes as a function of different p53-inducing conditions, providing further evidence for PDE2A, GAS6, E2F7, APOBEC3H, KCTD1, TRIM32, DICER, HRAS, KITLG and TGFA p53-dependent regulation, while MAP2K3, DNAJA1 and potentially YAP1 were identified as new direct p53 target genes. Conclusions We provide a comprehensive annotation of canonical and non-canonical p53 REs in the human genome, ranked on predicted transactivation potential. We also establish or corroborate direct p53 transcriptional control of thirteen genes. The entire list of identified and functionally classified p53 REs near all UCSC-annotated genes and within ENCODE mapped enhancer elements is provided. Our approach is distinct from, and complementary to, existing methods designed to identify p53 response elements. p53retriever is available as an R package at: http://tomateba.github.io/p53retriever. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1643-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Toma Tebaldi
- Centre for Integrative Biology (CIBIO), University of Trento, via delle Regole 101, 38123, Mattarello, TN, Italy.
| | - Sara Zaccara
- Centre for Integrative Biology (CIBIO), University of Trento, via delle Regole 101, 38123, Mattarello, TN, Italy.
| | - Federica Alessandrini
- Centre for Integrative Biology (CIBIO), University of Trento, via delle Regole 101, 38123, Mattarello, TN, Italy.
| | - Alessandra Bisio
- Centre for Integrative Biology (CIBIO), University of Trento, via delle Regole 101, 38123, Mattarello, TN, Italy.
| | - Yari Ciribilli
- Centre for Integrative Biology (CIBIO), University of Trento, via delle Regole 101, 38123, Mattarello, TN, Italy.
| | - Alberto Inga
- Centre for Integrative Biology (CIBIO), University of Trento, via delle Regole 101, 38123, Mattarello, TN, Italy.
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Chirica M, Le Bourhis L, Lehmann-Che J, Chardiny V, Bouhidel F, Foulboeuf L, Gornet JM, Lourenco N, Dulphy N, Toubert A, Allez M. Phenotypic analysis of T cells infiltrating colon cancers: Correlations with oncogenetic status. Oncoimmunology 2015; 4:e1016698. [PMID: 26405567 DOI: 10.1080/2162402x.2015.1016698] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 02/02/2015] [Accepted: 02/03/2015] [Indexed: 02/09/2023] Open
Abstract
Colorectal cancers (CRC) develop in the face of an important immune system associated with the intestinal mucosal tissue. The immune response against the tumor has been proposed to affect the prognosis of patients undergoing treatment for CRC. In this study T cells infiltrating the tumor were compared with T cells populating the unaffected neighboring mucosal tissue and cells from the peripheral blood. We observed that T cells from the tumor harbor an activated phenotype, with engagement of the NKG2D pathway in CD8 T cells. We show that mucosal and tumor-infiltrating T cells are enriched in NKG2D CD4 T cells, which exhibit cytotoxic functions. Finally, T cell populations in the tumor were modified according to its oncogenetic status, with higher percentages of CD8 T cells isolated from patients with microsatellite instable tumor status.
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Affiliation(s)
- Mircea Chirica
- INSERM U1160; Institut Universitaire d'Hématologie; Hôpital Saint-Louis ; Paris, France ; Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France ; Surgery Department; Hôopital Saint-Louis; AP-HP ; Paris, France
| | - Lionel Le Bourhis
- INSERM U1160; Institut Universitaire d'Hématologie; Hôpital Saint-Louis ; Paris, France ; Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France
| | - Jacqueline Lehmann-Che
- Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France ; Department of Biochemistry; Molecular Oncology Unit; Hôpital Saint-Louis; AP-HP ; Paris, France ; CNRS UMR7212/INSERMU944; Hôpital Saint-Louis ; Paris, France
| | - Victor Chardiny
- INSERM U1160; Institut Universitaire d'Hématologie; Hôpital Saint-Louis ; Paris, France ; Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France
| | - Fatiha Bouhidel
- Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France ; Department of Pathology; Hôpital Saint-Louis; AP-HP ; Paris, France
| | - Laure Foulboeuf
- INSERM U1160; Institut Universitaire d'Hématologie; Hôpital Saint-Louis ; Paris, France ; Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France
| | - Jean Marc Gornet
- Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France ; Gastroenterology Department; Hôpital Saint-Louis, AP-HP Paris, France
| | - Nelson Lourenco
- Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France ; Gastroenterology Department; Hôpital Saint-Louis, AP-HP Paris, France
| | - Nicolas Dulphy
- INSERM U1160; Institut Universitaire d'Hématologie; Hôpital Saint-Louis ; Paris, France ; Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France
| | - Antoine Toubert
- INSERM U1160; Institut Universitaire d'Hématologie; Hôpital Saint-Louis ; Paris, France ; Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France
| | - Matthieu Allez
- INSERM U1160; Institut Universitaire d'Hématologie; Hôpital Saint-Louis ; Paris, France ; Univ Paris Diderot; Sorbonne Paris Cité ; Paris, France ; Gastroenterology Department; Hôpital Saint-Louis, AP-HP Paris, France
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Lion M, Raimondi I, Donati S, Jousson O, Ciribilli Y, Inga A. Evolution of p53 transactivation specificity through the lens of a yeast-based functional assay. PLoS One 2015; 10:e0116177. [PMID: 25668429 PMCID: PMC4323202 DOI: 10.1371/journal.pone.0116177] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 10/16/2014] [Indexed: 11/18/2022] Open
Abstract
Co-evolution of transcription factors (TFs) with their respective cis-regulatory network enhances functional diversity in the course of evolution. We present a new approach to investigate transactivation capacity of sequence-specific TFs in evolutionary studies. Saccharomyces cerevisiae was used as an in vivo test tube and p53 proteins derived from human and five commonly used animal models were chosen as proof of concept. p53 is a highly conserved master regulator of environmental stress responses. Previous reports indicated conserved p53 DNA binding specificity in vitro, even for evolutionary distant species. We used isogenic yeast strains where p53-dependent transactivation was measured towards chromosomally integrated p53 response elements (REs). Ten REs were chosen to sample a wide range of DNA binding affinity and transactivation capacity for human p53 and proteins were expressed at two levels using an inducible expression system. We showed that the assay is amenable to study thermo-sensitivity of frog p53, and that chimeric constructs containing an ectopic transactivation domain could be rapidly developed to enhance the activity of proteins, such as fruit fly p53, that are poorly effective in engaging the yeast transcriptional machinery. Changes in the profile of relative transactivation towards the ten REs were measured for each p53 protein and compared to the profile obtained with human p53. These results, which are largely independent from relative p53 protein levels, revealed widespread evolutionary divergence of p53 transactivation specificity, even between human and mouse p53. Fruit fly and human p53 exhibited the largest discrimination among REs while zebrafish p53 was the least selective.
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Affiliation(s)
- Mattia Lion
- Laboratory of Transcriptional Networks, Centre for Integrative Biology (CIBIO), University of Trento, Mattarello, Trento, Italy
| | - Ivan Raimondi
- Laboratory of Transcriptional Networks, Centre for Integrative Biology (CIBIO), University of Trento, Mattarello, Trento, Italy
| | - Stefano Donati
- Laboratory of Transcriptional Networks, Centre for Integrative Biology (CIBIO), University of Trento, Mattarello, Trento, Italy
| | - Olivier Jousson
- Laboratory of Microbial Genomics, Centre for Integrative Biology (CIBIO), University of Trento, Mattarello, Trento, Italy
| | - Yari Ciribilli
- Laboratory of Transcriptional Networks, Centre for Integrative Biology (CIBIO), University of Trento, Mattarello, Trento, Italy
| | - Alberto Inga
- Laboratory of Transcriptional Networks, Centre for Integrative Biology (CIBIO), University of Trento, Mattarello, Trento, Italy
- * E-mail:
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Functional TP53 mutations have no impact on response to cytotoxic agents in metastatic colon cancer. Bull Cancer 2015; 102:117-25. [PMID: 25609485 DOI: 10.1016/j.bulcan.2014.12.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 03/24/2014] [Indexed: 01/28/2023]
Abstract
BACKGROUND Survival of metastatic colon cancer (mCC) patients has considerably improved with optimization of new drugs regimen. Inactivation of TP53 pathway by TP53 mutations is observed in nearly half of colorectal tumors. The impact of such mutations has been poorly studied in the metastatic setting. METHODS The files of 254 mCC treated in a single institution at Saint-Louis hospital between January 1999 and April 2011 were retrospectively reviewed. Tissue samples for analysis of TP53 mutations were available for 68 patients, performed using FASAY. The prognostic value of TP53 status was evaluated by comparing progression free survival (PFS) and overall survival (OS) in the group of TP53-mutated and wild type patients. RESULTS PFS was 6.9 months and OS 21.7 months in the whole population. There was no statistical difference in TP53-mutated and wild type groups in term of PFS (HR=1.04; IC 95%=0.6-1.79) and OS (HR=0.99; IC 95%=0.53-1.55) whatever the chemotherapy regimen (oxaliplatin- or irinotecan-based). Only BRAF V600 mutation was demonstrated to be a poor prognostic factor for PFS and OS, and CEA level for OS. CONCLUSIONS Routine determination of TP53 mutations, even with a highly sensitive method, cannot be recommended to predict chemotherapy response in mCC.
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Fei F, Messina C, Slaets L, Chakiba C, Cameron D, Bogaerts J, Bonnefoi H. Tumour size is the only predictive factor of distant recurrence after pathological complete response to neoadjuvant chemotherapy in patients with large operable or locally advanced breast cancers: a sub-study of EORTC 10994/BIG 1-00 phase III trial. Eur J Cancer 2015; 51:301-9. [PMID: 25578377 DOI: 10.1016/j.ejca.2014.11.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 11/17/2014] [Accepted: 11/25/2014] [Indexed: 12/19/2022]
Abstract
PURPOSE Although achieving a pathological complete response (pCR) after neoadjuvant chemotherapy (NACT) in breast cancer predicts a better outcome, some patients still relapse. The objectives of this study were to describe the types of events in this group of patients and to identify predictive factors for relapse. METHODS Patients with large operable or locally advanced breast cancers (T4d tumours were excluded) were randomised to receive either six cycles of anthracycline-based chemotherapy or three cycles of docetaxel followed by three cycles of eprirubicin/docetaxel. pCR was defined as no evidence of residual invasive cancer (or very few scattered tumour cells) in the primary tumour and axillary lymph nodes at surgery. Two Cox regression analyses were performed to identify predictive factors of relapse: one for recurrence-free interval (RFI) and one for distant recurrence-free interval (DRFI). RESULTS Out of 283 eligible patients who achieved a pCR, 40 (14.1%) and 28 (9.9%) presented an event of interest for the RFI and DRFI analyses, respectively. Five-year RFI, DRFI and overall survival (OS) were 85.3% (95% confidence interval (CI), 80.1-89.3), 89.6% (95% CI, 85.0-92.9) and 91.9% (95% CI, 87.2-94.9), respectively. No predictors for RFI after pCR were identified. For DRFI, tumour size was the only predictor: Hazard ratio (HR) T3 versus T1-2=3.62 (95% CI, 1.66-7.89); HR T4 versus T1-2: HR, 2.80 (95% CI, 0.62-12.64) p=0.0048. CONCLUSION In this study, clinical tumour size emerged as the only predictor for DRFI after pCR, with T3 and T4 tumours having an increased risk for distant recurrence compared to T1-2 tumours.
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Affiliation(s)
- F Fei
- EORTC, Medical Department, Avenue Emmanuel Mounier 83b11, 1200 Brussels, Belgium
| | - C Messina
- EORTC, Medical Department, Avenue Emmanuel Mounier 83b11, 1200 Brussels, Belgium
| | - L Slaets
- EORTC, Statistics Department, Avenue Emmanuel Mounier 83b11, 1200 Brussels, Belgium
| | - C Chakiba
- Department of Medical Oncology, Institut Bergonié Comprehensive Cancer Centre, 229 cours de l'Argonne, 33076 Bordeaux, France
| | - D Cameron
- Western General Hospital, Edinburgh Cancer Centre, Crewe Road South, GB Edinburgh EH4 2XU, United Kingdom
| | - J Bogaerts
- EORTC, Statistics Department, Avenue Emmanuel Mounier 83b11, 1200 Brussels, Belgium
| | - H Bonnefoi
- Department of Medical Oncology, Institut Bergonié Comprehensive Cancer Centre, Univ. Bordeaux, INSERM U916, 229 cours de l'Argonne, 33076 Bordeaux, France
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Bisson A, Le Corre S, Joly-Helas G, Chambon P, Demoulins L, Jean L, Adriouch S, Drouot L, Giverne C, Roussel F, Jacquot S, Doucet C, Michot F, Lamacz M, Frébourg T, Flaman JM, Boyer O. Chromosomal Instability but Lack of Transformation in Human Myoblast Preparations. Cell Transplant 2014; 23:1475-87. [DOI: 10.3727/096368913x670192] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Genetic alterations have recently been described as emerging during the culture of embryonic stem cells or induced pluripotent stem cells, raising concerns about their safety in future clinical use. Myoblasts are adult stem cells with important therapeutic potential that have been used in clinical trials for almost 20 years, but their genome integrity has not yet been established. Here we produced 10 human myoblast preparations and investigated their genomic stability. At the third passage, half of the preparations had a normal karyotype and half showed one to four alterations/30 metaphases. Chromosome 2 trisomy was found in 1–2/30 meta-phases and/or 2/100 nuclei by FISH in 3/10 samples, and there was no other recurrent anomaly. When prolonging cultures, these erratic abnormalities were never associated with a growth advantage. Cellular senescence was manifested in all samples by growth arrest before passage 15. Expression of TERT was always negative. Molecular analysis of individual p53 transcripts did not reveal tumorigenic mutations. CGH array (10 samples) and exome sequencing (one sample) failed to detect copy number variations or accumulation of mutations, respectively. Myoblasts did not grow either in soft agar or in vivo after injection in immunodeficient mice. Hence, occasional genomic abnormalities may occur during myoblast culture but are not associated with risk of transformation.
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Affiliation(s)
- Aurélie Bisson
- Inserm, U905, Rouen, France
- Normandy University, IRIB, Rouen, France
- Celogos, Paris, France
| | - Stéphanie Le Corre
- Inserm, U905, Rouen, France
- Rouen University Hospital, Laboratory of Biotherapy, Rouen, France
| | | | - Pascal Chambon
- Rouen University Hospital, Department of Cytogenetics, Rouen, France
- Inserm, U1079, Rouen, France
| | | | - Laetitia Jean
- Inserm, U905, Rouen, France
- Normandy University, IRIB, Rouen, France
| | - Sahil Adriouch
- Inserm, U905, Rouen, France
- Normandy University, IRIB, Rouen, France
| | - Laurent Drouot
- Inserm, U905, Rouen, France
- Normandy University, IRIB, Rouen, France
| | - Camille Giverne
- Rouen University Hospital, Laboratory of Biotherapy, Rouen, France
| | - Francis Roussel
- Rouen University Hospital, Department of Pathology, Rouen, France
| | - Serge Jacquot
- Inserm, U905, Rouen, France
- Normandy University, IRIB, Rouen, France
- Rouen University Hospital, Laboratory of Biotherapy, Rouen, France
| | | | - Francis Michot
- Normandy University, IRIB, Rouen, France
- Inserm, U1073, Rouen, France
- Rouen University Hospital, Department of Digestive Surgery, Rouen, France
| | - Marek Lamacz
- Inserm, U905, Rouen, France
- Normandy University, IRIB, Rouen, France
| | - Thierry Frébourg
- Normandy University, IRIB, Rouen, France
- Inserm, U1079, Rouen, France
- Rouen University Hospital, Department of Genetics, Rouen, France
| | - Jean-Michel Flaman
- Normandy University, IRIB, Rouen, France
- Inserm, U1079, Rouen, France
- Rouen University Hospital, Department of Genetics, Rouen, France
| | - Olivier Boyer
- Inserm, U905, Rouen, France
- Normandy University, IRIB, Rouen, France
- Rouen University Hospital, Laboratory of Biotherapy, Rouen, France
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Dohan A, Lousquy R, Eveno C, Goere D, Broqueres-You D, Kaci R, Lehmann-Che J, Launay JM, Soyer P, Bonnin P, Pocard M. Orthotopic Animal Model of Pseudomyxoma Peritonei. THE AMERICAN JOURNAL OF PATHOLOGY 2014; 184:1920-9. [DOI: 10.1016/j.ajpath.2014.03.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 02/28/2014] [Accepted: 03/06/2014] [Indexed: 01/19/2023]
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Prognostic value of TP53 gene mutations in myelodysplastic syndromes and acute myeloid leukemia treated with azacitidine. Leuk Res 2014; 38:751-5. [DOI: 10.1016/j.leukres.2014.03.012] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 03/13/2014] [Accepted: 03/15/2014] [Indexed: 02/07/2023]
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Abdul Rahman A, A Jamal AR, Harun R, Mohd Mokhtar N, Wan Ngah WZ. Gamma-tocotrienol and hydroxy-chavicol synergistically inhibits growth and induces apoptosis of human glioma cells. Altern Ther Health Med 2014; 14:213. [PMID: 24980711 PMCID: PMC4087240 DOI: 10.1186/1472-6882-14-213] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 06/20/2014] [Indexed: 11/22/2022]
Abstract
Background Gamma-tocotrienol (GTT), an isomer of vitamin E and hydroxy-chavicol (HC), a major bioactive compound in Piper betle, has been reported to possess anti-carcinogenic properties by modulating different cellular signaling events. One possible strategy to overcome multi-drug resistance and high toxic doses of treatment is by applying combinational therapy especially using natural bioactives in cancer treatment. Methods In this study, we investigated the interaction of GTT and HC and its mode of cell death on glioma cell lines. GTT or HC alone and in combination were tested for cytotoxicity on glioma cell lines 1321N1 (Grade II), SW1783 (Grade III) and LN18 (Grade IV) by [3-(4,5-dimethylthiazol-2- yl)-5-(3-carboxymethoxy-phenyl)-2-(4-sulfophenyl)- 2H- tetrazolium, inner salt] MTS assay. The interactions of each combination were evaluated by using the combination index (CI) obtained from an isobologram. Results Individually, GTT or HC displayed mild growth inhibitory effects against glioma cancer cell lines at concentration values ranging from 42–100 μg/ml and 75–119 μg/ml respectively. However, the combination of sub-lethal doses of GTT + HC dramatically enhanced the inhibition of glioma cancer cell proliferation and exhibited a strong synergistic effect on 1321N1 with CI of 0.55, and CI = 0.54 for SW1783. While in LN18 cells, moderate synergistic interaction of GTT + HC was observed with CI value of 0.73. Exposure of grade II, III and IV cells to combined treatments for 24 hours led to increased apoptosis as determined by annexin-V FITC/PI staining and caspase-3 apoptosis assay, showing caspase-3 activation of 27%, 7.1% and 79% respectively. Conclusion In conclusion, combined treatments with sub-effective doses of GTT and HC resulted in synergistic inhibition of cell proliferation through the induction of apoptosis of human glioma cells in vitro.
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Le Morvan V, Litière S, Laroche-Clary A, Ait-Ouferoukh S, Bellott R, Messina C, Cameron D, Bonnefoi H, Robert J. Identification of SNPs associated with response of breast cancer patients to neoadjuvant chemotherapy in the EORTC-10994 randomized phase III trial. THE PHARMACOGENOMICS JOURNAL 2014; 15:63-8. [PMID: 24958282 DOI: 10.1038/tpj.2014.24] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 04/14/2014] [Accepted: 04/22/2014] [Indexed: 11/09/2022]
Abstract
Using cell line panels we identified associations between single-nucleotide polymorphisms (SNPs) and chemosensitivity. To validate these findings in clinics, we genotyped a subset of patients included in a neoadjuvant breast cancer trial to explore the relationship between genotypes and clinical outcome according to treatment received and p53 status. We genotyped 384 selected SNPs in the germline DNA extracted from formalin-fixed paraffin-embedded non-invaded lymph nodes of 243 patients. The polymorphisms of five selected genes were first studied, and then all 384 SNPs were considered. Correction for multiple testing was applied. CYP1B1 polymorphism was significantly associated with pathological complete response (pCR) in patients who had received DNA-damaging agents. MDM2, MDM4 and TP53BP1 polymorphisms were significantly associated with pCR in patients harboring a p53-positive tumor. In the complete SNP panel, there was a significant association between overall survival (OS) and a SNP of ADH1C, R272Q (P=0.0023). By multivariate analysis, only ADH1C genotype and p53 status were significantly associated with OS.
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Affiliation(s)
- V Le Morvan
- INSERM U916, Institut Bergonié, Université Bordeaux Segalen, Bordeaux, France
| | - S Litière
- European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium
| | - A Laroche-Clary
- INSERM U916, Institut Bergonié, Université Bordeaux Segalen, Bordeaux, France
| | - S Ait-Ouferoukh
- INSERM U916, Institut Bergonié, Université Bordeaux Segalen, Bordeaux, France
| | - R Bellott
- INSERM U916, Institut Bergonié, Université Bordeaux Segalen, Bordeaux, France
| | - C Messina
- European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium
| | | | - H Bonnefoi
- INSERM U916, Institut Bergonié, Université Bordeaux Segalen, Bordeaux, France
| | - J Robert
- INSERM U916, Institut Bergonié, Université Bordeaux Segalen, Bordeaux, France
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Iggo R, Rudewicz J, Monceau E, Sevenet N, Bergh J, Sjoblom T, Bonnefoi H. Validation of a yeast functional assay for p53 mutations using clonal sequencing. J Pathol 2014; 231:441-8. [PMID: 23897043 DOI: 10.1002/path.4243] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 07/05/2013] [Accepted: 07/24/2013] [Indexed: 11/12/2022]
Abstract
We have previously tested biopsies from 1469 breast tumours with a p53 functional assay in the context of a prospective clinical trial (EORTC 10994/BIG 1-00). The goal of the trial was to determine whether p53 status could be used to select patients who would benefit from inclusion of taxanes in anthracycline-based chemotherapy. The results of the trial were negative. To test whether this was because the functional assay misclassified the tumours, we have reanalysed two groups of biopsies by Sanger sequencing and Roche 454 next generation sequencing (NGS). Comparison of yeast data with pooled cDNA sequencing data in an initial cohort of 69 biopsies showed that conventional sequencing is insensitive when the mutant p53 content is low. A second cohort of 48 biopsies was used to compare directly the yeast assay with Sanger and NGS technology. The mutant sequence was difficult to detect in sequence chromatograms of pooled cDNA, whereas NGS unequivocally identified mutations in every case classified as mutant by the functional assay. The NGS data showed that small deletions, probably caused by PCR splicing, account for most of the unexplained background in the yeast assay. We conclude that mutation detection techniques that test multiple clones, such as the p53 functional assay and NGS, are more reliable than Sanger sequencing of pooled DNA; that the high p53 mutation rate (44%) seen with the yeast assay in the EORTC 10994/BIG 1-00 trial reflects this high sensitivity; and that NGS with Roche 454 technology could be used to identify the p53 mutations in the remaining tumours previously tested in yeast in the EORTC10994/BIG 1-00 trial.
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Affiliation(s)
- Richard Iggo
- INSERM U916, Institut Bergonié Comprehensive Cancer Centre, Univ. Bordeaux, F-33000, Bordeaux, France
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Malcikova J, Pavlova S, Kozubik KS, Pospisilova S. TP53 Mutation Analysis in Clinical Practice: Lessons From Chronic Lymphocytic Leukemia. Hum Mutat 2014; 35:663-71. [DOI: 10.1002/humu.22508] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 01/03/2014] [Indexed: 01/22/2023]
Affiliation(s)
- Jitka Malcikova
- Central European Institute of Technology; Center of Molecular Medicine, and Faculty of Medicine; Department of Internal Medicine - Hematology and Oncology; Masaryk University; Brno Czech Republic
| | - Sarka Pavlova
- Central European Institute of Technology; Center of Molecular Medicine, and Faculty of Medicine; Department of Internal Medicine - Hematology and Oncology; Masaryk University; Brno Czech Republic
| | - Katerina Stano Kozubik
- Central European Institute of Technology; Center of Molecular Medicine, and Faculty of Medicine; Department of Internal Medicine - Hematology and Oncology; Masaryk University; Brno Czech Republic
| | - Sarka Pospisilova
- Central European Institute of Technology; Center of Molecular Medicine, and Faculty of Medicine; Department of Internal Medicine - Hematology and Oncology; Masaryk University; Brno Czech Republic
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Candidate luminal B breast cancer genes identified by genome, gene expression and DNA methylation profiling. PLoS One 2014; 9:e81843. [PMID: 24416132 PMCID: PMC3886975 DOI: 10.1371/journal.pone.0081843] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 10/17/2013] [Indexed: 01/19/2023] Open
Abstract
Breast cancers (BCs) of the luminal B subtype are estrogen receptor-positive (ER+), highly proliferative, resistant to standard therapies and have a poor prognosis. To better understand this subtype we compared DNA copy number aberrations (CNAs), DNA promoter methylation, gene expression profiles, and somatic mutations in nine selected genes, in 32 luminal B tumors with those observed in 156 BCs of the other molecular subtypes. Frequent CNAs included 8p11-p12 and 11q13.1-q13.2 amplifications, 7q11.22-q34, 8q21.12-q24.23, 12p12.3-p13.1, 12q13.11-q24.11, 14q21.1-q23.1, 17q11.1-q25.1, 20q11.23-q13.33 gains and 6q14.1-q24.2, 9p21.3-p24,3, 9q21.2, 18p11.31-p11.32 losses. A total of 237 and 101 luminal B-specific candidate oncogenes and tumor suppressor genes (TSGs) presented a deregulated expression in relation with their CNAs, including 11 genes previously reported associated with endocrine resistance. Interestingly, 88% of the potential TSGs are located within chromosome arm 6q, and seven candidate oncogenes are potential therapeutic targets. A total of 100 candidate oncogenes were validated in a public series of 5,765 BCs and the overexpression of 67 of these was associated with poor survival in luminal tumors. Twenty-four genes presented a deregulated expression in relation with a high DNA methylation level. FOXO3, PIK3CA and TP53 were the most frequent mutated genes among the nine tested. In a meta-analysis of next-generation sequencing data in 875 BCs, KCNB2 mutations were associated with luminal B cases while candidate TSGs MDN1 (6q15) and UTRN (6q24), were mutated in this subtype. In conclusion, we have reported luminal B candidate genes that may play a role in the development and/or hormone resistance of this aggressive subtype.
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Comparison of the biological effects of MMS and Me-lex, a minor groove methylating agent: clarifying the role of N3-methyladenine. Mutat Res 2013; 759:45-51. [PMID: 24211855 DOI: 10.1016/j.mrfmmm.2013.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 10/16/2013] [Accepted: 10/29/2013] [Indexed: 02/06/2023]
Abstract
N3-methyladenine (3-mA), generated by the reaction of methylating agents with DNA, is considered a highly toxic but weakly mutagenic lesion. However, due to its intrinsic instability, some of the biological effects of the adduct can result from the formation of the corresponding depurination product [an apurinic (AP)-site]. Previously, we exploited Me-lex, i.e. {1-methyl-4-[1-methyl-4-(3-methoxysulfonylpropanamido)pyrrole-2-carboxamido]-pyrrole-2 carboxamido}propane, a minor groove equilibrium binder with selectivity for A/T rich sequences that efficiently reacts with DNA to afford 3-mA as the dominant product, to probe the biology of this lesion. Using human p53 cDNA as a target in a yeast system, a weak increase in mutagenicity was observed in the absence of Mag1 (3-methyladenine-DNA glycosylase 1, mag1), the enzyme devoted to remove 3-mA from DNA. Moreover, a significant increase in mutagenicity occurred in the absence of the enzymes involved in the repair of AP-sites (AP endonucleases 1 and 2, apn1apn2). Since methyl methanesulfonate (MMS) has been extensively used to explore the biological effects of 3-mA, even though it produces 3-mA in low relative yield, we compared the toxicity and mutagenicity induced by MMS and Me-lex in yeast. A mutagenesis reporter plasmid was damaged in vitro by MMS and then transformed into wild-type and Translesion Synthesis (TLS) Polζ (REV3) and Polη (RAD30) deficient strains. Furthermore, a mag1rad30 double mutant strain was constructed and transformed with the DNA plasmid damaged in vitro by Me-lex. The results confirm the important role of Polζ in the mutagenic bypass of MMS and Me-lex induced lesions, with Polη contributing only towards the bypass of Me-lex induced lesions, mainly in an error-free way. Previous and present results point towards the involvement of AP-sites, derived from the depurination of 3-mA, in the observed toxicity and mutagenicity.
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