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Salvato I, Ricciardi L, Nucera F, Nigro A, Dal Col J, Monaco F, Caramori G, Stellato C. RNA-Binding Proteins as a Molecular Link between COPD and Lung Cancer. COPD 2023; 20:18-30. [PMID: 36655862 DOI: 10.1080/15412555.2022.2107500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) represents an independent risk factor for lung cancer development. Accelerated cell senescence, induced by oxidative stress and inflammation, is a common pathogenic determinant of both COPD and lung cancer. The post transcriptional regulation of genes involved in these processes is finely regulated by RNA-binding proteins (RBPs), which regulate mRNA turnover, subcellular localization, splicing and translation. Multiple pro-inflammatory mediators (including cytokines, chemokines, proteins, growth factors and others), responsible of lung microenvironment alteration, are regulated by RBPs. Several mouse models have shown the implication of RBPs in multiple mechanisms that sustain chronic inflammation and neoplastic transformation. However, further studies are required to clarify the role of RBPs in the pathogenic mechanisms shared by lung cancer and COPD, in order to identify novel biomarkers and therapeutic targets. This review will therefore focus on the studies collectively indicating the role of RBPs in oxidative stress and chronic inflammation as common pathogenic mechanisms shared by lung cancer and COPD.
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Affiliation(s)
- Ilaria Salvato
- Pneumologia, Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (BIOMORF), Università degli Studi di Messina, Italy
| | - Luca Ricciardi
- Pneumologia, Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (BIOMORF), Università degli Studi di Messina, Italy
| | - Francesco Nucera
- Pneumologia, Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (BIOMORF), Università degli Studi di Messina, Italy
| | - Annunziata Nigro
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, Italy
| | - Jessica Dal Col
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, Italy
| | - Francesco Monaco
- Chirurgia Toracica, Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (BIOMORF), Università degli Studi di Messina, Italy
| | - Gaetano Caramori
- Pneumologia, Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (BIOMORF), Università degli Studi di Messina, Italy
| | - Cristiana Stellato
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, Italy
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Cheng WY, Shen CC, Liang YJ, Chiao MT, Yang YC, Hsieh WY, Lin CH, Chen JP. Polymorphism at codon 31 of CDKN1A (p21) as a predictive factor for bevacizumab therapy in glioblastoma multiforme. BMC Cancer 2023; 23:886. [PMID: 37730565 PMCID: PMC10510274 DOI: 10.1186/s12885-023-11400-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/13/2023] [Indexed: 09/22/2023] Open
Abstract
Glioblastoma (GBM), a prevalent and malignant brain tumor, poses a challenge in surgical resection due to its invasive nature within the brain parenchyma. CDKN1A (p21, Waf-1), a cyclin-dependent kinase inhibitor, plays a pivotal role in regulating cell growth arrest, terminal differentiation, and apoptosis. The existence of natural variants of CDKN1A has been associated with specific cancer types. In this retrospective study, our objective was to identify polymorphic variants of CDKN1A, specifically c.93C > A (codon 31 Ser31Arg), and investigate its potential impact within the scope of bevacizumab therapy for glioblastoma multiforme. This study involved a cohort of 139 unrelated adult Chinese GBM patients in Taiwan. Genomic DNA extracted from tumor samples was utilized for genotyping using the polymerase chain reaction (PCR) restriction fragment length polymorphism method (PCR-RFLP analysis). Through unconditional logistic regression analysis, odds ratios (ORs) with corresponding 95% confidence intervals (CIs) were calculated. Our findings unveiled that among these GBM patients, the distribution of codon 31 polymorphisms was as follows: 23.02% were Serine homozygotes (Ser/Ser), 27.34% were Arginine homozygotes (Arg/Arg), and 49.64% were Serine/Arginine heterozygotes (Ser/Arg). While CDKN1A c.93C > A polymorphisms did not exhibit a direct association with overall survival in GBM patients, noteworthy survival benefits emerged among individuals with Arg/Arg and Arg/Ser genotypes who received combined concurrent chemoradiotherapy (CCRT) and bevacizumab treatment compared to those who underwent CCRT alone. Our findings indicate a significant involvement of the CDKN1A c.93C > A polymorphism in the development and onset of GBM, offering potential implications for the early prognostication of bevacizumab therapy outcomes.
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Affiliation(s)
- Wen-Yu Cheng
- Department of Minimally Invasive Skull Base Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung city, Taiwan.
- Department of Physical Therapy, Hung Kuang University, Taichung city, Taiwan.
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung city, Taiwan.
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung city, Taiwan.
| | - Chiung-Chyi Shen
- Department of Minimally Invasive Skull Base Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung city, Taiwan
- Department of Physical Therapy, Hung Kuang University, Taichung city, Taiwan
- Basic Medical Education, Central Taiwan University of Science and Technology, Taichung city, Taiwan
| | - Yea-Jiuen Liang
- Department of Minimally Invasive Skull Base Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung city, Taiwan
| | - Ming-Tsang Chiao
- Department of Minimally Invasive Skull Base Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung city, Taiwan
| | - Yi-Chin Yang
- Department of Minimally Invasive Skull Base Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung city, Taiwan
| | - Wan-Yu Hsieh
- Department of Minimally Invasive Skull Base Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung city, Taiwan
| | - Cheng-Hui Lin
- Department of Minimally Invasive Skull Base Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung city, Taiwan
| | - Jun-Peng Chen
- Biostatistics Task Force, Taichung Veterans General Hospital, Taichung city, Taiwan
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Marcianò G, Palleria C, Casarella A, Rania V, Basile E, Catarisano L, Vocca C, Bianco L, Pelaia C, Cione E, D’Agostino B, Citraro R, De Sarro G, Gallelli L. Effect of Statins on Lung Cancer Molecular Pathways: A Possible Therapeutic Role. Pharmaceuticals (Basel) 2022; 15:589. [PMID: 35631415 PMCID: PMC9144184 DOI: 10.3390/ph15050589] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/06/2022] [Accepted: 05/07/2022] [Indexed: 02/06/2023] Open
Abstract
Lung cancer is a common neoplasm, usually treated through chemotherapy, radiotherapy and/or surgery. Both clinical and experimental studies on cancer cells suggest that some drugs (e.g., statins) have the potential to improve the prognosis of cancer. In fact, statins blocking the enzyme "hydroxy-3-methylglutaryl-coenzyme A reductase" exert pleiotropic effects on different genes involved in the pathogenesis of lung cancer. In this narrative review, we presented the experimental and clinical studies that evaluated the effects of statins on lung cancer and described data on the effectiveness and safety of these compounds. We also evaluated gender differences in the treatment of lung cancer to understand the possibility of personalized therapy based on the modulation of the mevalonate pathway. In conclusion, according to the literature data, statins exert multiple effects on lung cancer cells, even if the evidence for their use in clinical practice is lacking.
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Affiliation(s)
- Gianmarco Marcianò
- Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy; (G.M.); (A.C.); (V.R.); (E.B.); (L.C.); (C.V.); (R.C.); (G.D.S.)
| | - Caterina Palleria
- Operative Unit of Clinical Pharmacology and Pharmacovigilanze, Mater Domini Hospital, 88100 Catanzaro, Italy; (C.P.); (L.B.); (C.P.)
| | - Alessandro Casarella
- Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy; (G.M.); (A.C.); (V.R.); (E.B.); (L.C.); (C.V.); (R.C.); (G.D.S.)
| | - Vincenzo Rania
- Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy; (G.M.); (A.C.); (V.R.); (E.B.); (L.C.); (C.V.); (R.C.); (G.D.S.)
| | - Emanuele Basile
- Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy; (G.M.); (A.C.); (V.R.); (E.B.); (L.C.); (C.V.); (R.C.); (G.D.S.)
| | - Luca Catarisano
- Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy; (G.M.); (A.C.); (V.R.); (E.B.); (L.C.); (C.V.); (R.C.); (G.D.S.)
| | - Cristina Vocca
- Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy; (G.M.); (A.C.); (V.R.); (E.B.); (L.C.); (C.V.); (R.C.); (G.D.S.)
| | - Luigi Bianco
- Operative Unit of Clinical Pharmacology and Pharmacovigilanze, Mater Domini Hospital, 88100 Catanzaro, Italy; (C.P.); (L.B.); (C.P.)
| | - Corrado Pelaia
- Operative Unit of Clinical Pharmacology and Pharmacovigilanze, Mater Domini Hospital, 88100 Catanzaro, Italy; (C.P.); (L.B.); (C.P.)
| | - Erika Cione
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Ed. Polifunzionale, Arcavacata di Rende, 87036 Rende, Italy;
| | - Bruno D’Agostino
- Department of Experimental Medicine L. Donatelli, Section of Pharmacology, School of Medicine, University of Campania Luigi Vanvitelli, 80100 Naples, Italy;
| | - Rita Citraro
- Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy; (G.M.); (A.C.); (V.R.); (E.B.); (L.C.); (C.V.); (R.C.); (G.D.S.)
- Operative Unit of Clinical Pharmacology and Pharmacovigilanze, Mater Domini Hospital, 88100 Catanzaro, Italy; (C.P.); (L.B.); (C.P.)
- Research Centre FAS@UMG, Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy
| | - Giovambattista De Sarro
- Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy; (G.M.); (A.C.); (V.R.); (E.B.); (L.C.); (C.V.); (R.C.); (G.D.S.)
- Operative Unit of Clinical Pharmacology and Pharmacovigilanze, Mater Domini Hospital, 88100 Catanzaro, Italy; (C.P.); (L.B.); (C.P.)
- Research Centre FAS@UMG, Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy
| | - Luca Gallelli
- Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy; (G.M.); (A.C.); (V.R.); (E.B.); (L.C.); (C.V.); (R.C.); (G.D.S.)
- Operative Unit of Clinical Pharmacology and Pharmacovigilanze, Mater Domini Hospital, 88100 Catanzaro, Italy; (C.P.); (L.B.); (C.P.)
- Research Centre FAS@UMG, Department of Health Science, School of Medicine, University of Catanzaro, 88100 Catanzaro, Italy
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Sarwar Z, Nabi N, Bhat SA, Gillani SQ, Reshi I, Un Nisa M, Adelmant G, Marto J, Andrabi S. Interaction of DBC1 with polyoma small T antigen promotes its degradation and negatively regulates tumorigenesis. J Biol Chem 2021; 298:101496. [PMID: 34921839 PMCID: PMC8784333 DOI: 10.1016/j.jbc.2021.101496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 11/09/2021] [Accepted: 12/10/2021] [Indexed: 12/05/2022] Open
Abstract
Deleted in Breast Cancer 1 (DBC1) is an important metabolic sensor. Previous studies have implicated DBC1 in various cellular functions, notably cell proliferation, apoptosis, histone modification, and adipogenesis. However, current reports about the role of DBC1 in tumorigenesis are controversial and designate DBC1 alternatively as a tumor suppressor or a tumor promoter. In the present study, we report that polyoma small T antigen (PyST) associates with DBC1 in mammalian cells, and this interaction leads to the posttranslational downregulation of DBC1 protein levels. When coexpressed, DBC1 overcomes PyST-induced mitotic arrest and promotes the exit of cells from mitosis. Using both transient and stable modes of PyST expression, we also show that cellular DBC1 is subjected to degradation by LKB1, a tumor suppressor and cellular energy sensor kinase, in an AMP kinase-independent manner. Moreover, LKB1 negatively regulates the phosphorylation as well as activity of the prosurvival kinase AKT1 through DBC1 and its downstream pseudokinase substrate, Tribbles 3 (TRB3). Using both transient transfection and stable cell line approaches as well as soft agar assay, we demonstrate that DBC1 has oncogenic potential. In conclusion, our study provides insight into a novel signaling axis that connects LKB1, DBC1, TRB3, and AKT1. We propose that the LKB1–DBC1–AKT1 signaling paradigm may have an important role in the regulation of cell cycle and apoptosis and consequently tumorigenesis.
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Affiliation(s)
- Zarka Sarwar
- Department of Biochemistry, University of Kashmir, Srinagar, India, 190006
| | - Nusrat Nabi
- Department of Biochemistry, University of Kashmir, Srinagar, India, 190006
| | - Sameer Ahmed Bhat
- Department of Biochemistry, University of Kashmir, Srinagar, India, 190006
| | | | - Irfana Reshi
- Department of Biochemistry, University of Kashmir, Srinagar, India, 190006
| | - Misbah Un Nisa
- Department of Biochemistry, University of Kashmir, Srinagar, India, 190006
| | - Guillaume Adelmant
- Blais Proteomics Centre, Dana Farber Cancer Institute, Harvard University, Boston, USA
| | - Jarrod Marto
- Blais Proteomics Centre, Dana Farber Cancer Institute, Harvard University, Boston, USA
| | - Shaida Andrabi
- Department of Biochemistry, University of Kashmir, Srinagar, India, 190006.
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5
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Hoxhaj I, Vukovic V, Boccia S, Pastorino R. Single nucleotide polymorphisms and the risk of developing a second primary cancer among head and neck cancer patients: a systematic literature review and meta-analysis. BMC Cancer 2021; 21:660. [PMID: 34078296 PMCID: PMC8173958 DOI: 10.1186/s12885-021-08335-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 05/10/2021] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Head and Neck Cancer (HNC) survivors are at increased risk of developing a second primary cancer (SPC). Along with the environmental risk factors, genetic factors have been associated with a potential increased susceptibility to SPC development. We aim to identify the Single Nucleotide Polymorphisms (SNPs) that contribute to SPC development among HNC survivors through a systematic review and meta-analysis. METHODS We searched PubMed, Scopus and ISI Web of Science for eligible studies published in English until January 31st, 2020. We included studies reporting primary data that evaluated the association between SNPs and SPC risk in HNC patients. Data were pooled in a random-effect meta-analyses, when at least two studies on the same SNP evaluated the same genotype model. Heterogeneity was assessed using the χ2-based Q-statistics and the I2 statistics. Quality of the included studies was assessed using the Q-Genie tool. RESULTS Twenty-one studies, of moderate to good quality, were included in the systematic review. Fifty-one genes were reported across the included studies to have significant associations with an increased SPC risk. Overall, 81 out of 122 investigated SNPs were significantly associated with the SPC risk. Seven studies were included in the meta-analysis, which showed five SNPs associated with an increased risk of SPC: p21C70T, CT + TT (HR = 1.76; 95% CI: 1.28-2.43); FASLG -844C > T, CT + TT (HR = 1.82; 95% CI: 1.35-2.46), P21 C98A, CA + AA (HR = 1.75; 95% CI: 1.28-2.38); FAS -670A > G (HR = 1.84; 95% CI: 1.28-2.66) and GST-M1, Null genotype (HR = 1.54; 95% CI: 1.13-2.10). CONCLUSIONS The identified SNPs in our systematic review and meta-analysis might serve as potential markers for identification of patients at high risk of developing SPC after primary HNC. PROSPERO REGISTRATION NUMBER CRD42019135612 .
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Affiliation(s)
- Ilda Hoxhaj
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy
- Department of Woman and Child Health and Public Health - Public Health Area, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Vladimir Vukovic
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy
- Center for Disease Control and Prevention, Institute of Public Health of Vojvodina, Novi Sad, Serbia
| | - Stefania Boccia
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy.
- Department of Woman and Child Health and Public Health - Public Health Area, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
| | - Roberta Pastorino
- Department of Woman and Child Health and Public Health - Public Health Area, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
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Lima G, Santos E, Angelo H, Oliveira M, Heráclio S, Leite F, de Melo C, Crovella S, Maia M, Souza P. Association between p21 Ser31Arg polymorphism and the development of cervical lesion in women infected with high risk HPV. Tumour Biol 2016; 37:10935-41. [PMID: 26886286 DOI: 10.1007/s13277-016-4979-0] [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: 11/25/2015] [Accepted: 02/04/2016] [Indexed: 12/17/2022] Open
Abstract
Infection by high-risk human papillomavirus (HR-HPV) and single nucleotide polymorphism (SNP) in genes involved in cell cycle control, as p21 and p27, are important factors in the development of different types of human cancers. This study aims at investigating whether both the p21 Ser31Arg and p27 V109G polymorphisms are associated with susceptibility to the development of cervical lesions in women HR-HPV positive. We analyzed 132 women HPV positive and with cervical lesions or CC and 154 healthy control (HPV negative and without cervical lesions). p21 Ser31Arg and p27 V109G polymorphisms were analyzed using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method and sequencing. The p21 31Arg allele was associated with susceptibility for the development of cervical lesions (P* = 0.0009), while p27 V109G polymorphism showed no significant differences for this association (P* = 0.89). However, the combined effect of the polymorphisms showed that the presence of the CC genotype (SNP p21 Ser31Arg) conferred protection for the development of cervical lesions (OR = 0.39). p21 Ser31Arg and p27 V109G polymorphisms were not associated with the grade of cervical lesions (CINI, CINII, and CINIII) or CC (P* > 0.05). The HR-HPV more frequent in this study were of 16 (57.6 %) and 18 (37.1 %) types; however, no association was observed when both polymorphisms and risk factors analyzed were compared (P* > 0.05). Our findings suggest a possible association between p21 Ser31tabArg polymorphism and susceptibility to the development of cervical lesions in women from Pernambuco. Brazil.
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Affiliation(s)
- Géssica Lima
- Post-Graduate Program in Cellular and Molecular Biology Applied, University of Pernambuco (UPE), Recife, PE, Brazil
| | - Erinaldo Santos
- Post-Graduate Program in Tropical Animal Science, Rural Federal University of Pernambuco (UFRPE), Recife, PE, Brazil
| | - Hildson Angelo
- Post-Graduate Program in Genetic, Federal University of Pernambuco (UFPE), Recife, PE, Brazil.,Federal Institute of Pernambuco - Campus Garanhuns (IFPE/Garanhuns), Garanhuns, PE, Brazil
| | - Micheline Oliveira
- Post-Graduate Program in Biological Science, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - Sandra Heráclio
- Departament of Lower Genital Tract Pathology, Women's Healthcare Center, Instituto de Medicina Integral Prof. Fernando Figueira (IMIP), Recife, PE, Brazil
| | - Fernanda Leite
- Department of Biology, Rural Federal University of Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, 52171-900, Recife, PE, Brazil
| | - Celso de Melo
- Departament of Physics, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - Sergio Crovella
- Post-Graduate Program in Genetic, Federal University of Pernambuco (UFPE), Recife, PE, Brazil.,Departament of Genetics, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | - Maria Maia
- Post-Graduate Program in Tropical Animal Science, Rural Federal University of Pernambuco (UFRPE), Recife, PE, Brazil.,Department of Biology, Rural Federal University of Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, 52171-900, Recife, PE, Brazil
| | - Paulo Souza
- Post-Graduate Program in Cellular and Molecular Biology Applied, University of Pernambuco (UPE), Recife, PE, Brazil. .,Post-Graduate Program in Tropical Animal Science, Rural Federal University of Pernambuco (UFRPE), Recife, PE, Brazil. .,Department of Biology, Rural Federal University of Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, 52171-900, Recife, PE, Brazil.
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Tian C, Chen Z, Ma X, Yang M, Wang Z, Dong Y, Yang T, Yang W. Comparison of Genetic Variants in Cancer-Related Genes between Chinese Hui and Han Populations. PLoS One 2015; 10:e0145170. [PMID: 26683024 PMCID: PMC4684198 DOI: 10.1371/journal.pone.0145170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 11/30/2015] [Indexed: 11/18/2022] Open
Abstract
Background The Chinese Hui population, as the second largest minority ethnic group in China, may have a different genetic background from Han people because of its unique demographic history. In this study, we aimed to identify genetic differences between Han and Hui Chinese from the Ningxia region of China by comparing eighteen single nucleotide polymorphisms in cancer-related genes. Methods DNA samples were collected from 99 Hui and 145 Han people from the Ningxia Hui Autonomous Region in China, and SNPs were detected using an improved multiplex ligase detection reaction method. Genotyping data from six 1000 Genomes Project population samples (99 Utah residents with northern and western European ancestry (CEU), 107 Toscani in Italy (TSI), 108 Yoruba in Ibadan (YRI), 61 of African ancestry in the southwestern US (ASW), 103 Han Chinese in Beijing (CHB), and 104 Japanese in Tokyo (JPT)) were also included in this study. Differences in the distribution of alleles among the populations were assessed using χ2 tests, and FST was used to measure the degree of population differentiation. Results We found that the genetic diversity of many SNPs in cancer-related genes in the Hui Chinese in Ningxia was different from that in the Han Chinese in Ningxia. For example, the allele frequencies of four SNPs (rs13361707, rs2274223, rs465498, and rs753955) showed different genetic distributions (p<0.05) between Chinese Ningxia Han and Chinese Ningxia Hui. Five SNPs (rs730506, rs13361707, rs2274223, rs465498 and rs753955) had different FST values (FST>0.000) between the Hui and Han populations. Conclusions These results suggest that some SNPs associated with cancer-related genes vary among different Chinese ethnic groups. We suggest that population differences should be carefully considered in evaluating cancer risk and prognosis as well as the efficacy of cancer therapy.
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Affiliation(s)
- Chaoyong Tian
- Cancer Research Institute of the General Hospital, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Ningxia Reproduction and Heredity, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Zhiqiang Chen
- Radiology Department of General Hospital, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Xixian Ma
- Chinese Academy of Sciences (CAS) Key Laboratory of Computational Biology, Max Planck Independent Research Group on Population Genomics, CAS-MPG Partner Institute for Computational Biology (PICB), Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Ming Yang
- Beijing Laboratory of Biomedical Materials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Zhizhong Wang
- Department of Epidemiology, School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Ying Dong
- Cancer Research Institute of the General Hospital, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Ting Yang
- Department of Epidemiology, School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Wenjun Yang
- Cancer Research Institute of the General Hospital, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Ningxia Reproduction and Heredity, Ningxia Medical University, Yinchuan, Ningxia, China
- Department of Epidemiology, School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- * E-mail:
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Souto-García A, Fernández-Somoano A, Pascual T, Álvarez-Avellón SM, Tardón A. Association of p21 Ser31Arg and p53 Arg72Pro polymorphisms with lung cancer risk in CAPUA study. LUNG CANCER-TARGETS AND THERAPY 2012; 3:69-78. [PMID: 28210126 DOI: 10.2147/lctt.s35287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND The aim of this study was to investigate how Ser31Arg polymorphisms in p21 may modify lung cancer susceptibility. Because p21 is the major downstream mediator of p53, we analyzed the combined effect of two polymorphisms, p21 Ser31Arg and TP53 Arg72Pro, to elucidate whether polymorphic variants determine the risk of lung cancer. METHODS This was designed as a hospital-based case-control study, and included 675 cases and 675 control subjects matched by ethnicity, gender, and age. Genotypes were determined by polymerase chain reaction restriction fragment length polymorphism, and multivariate unconditional logistic regression was performed to analyze the results. RESULTS Subjects who carried the p21 Ser31Arg allele had a higher risk of lung cancer (adjusted odds ratio [OR] 1.38; 95% confidence interval [CI] 0.99-2.03). This risk was increased in men aged younger than 55 years (adjusted OR 2.35; 95% CI 1.00-5.51). Smokers had an increased risk of lung cancer (adjusted OR 2.23; 95% CI 1.24-4.02). Men younger than 55 years carrying risk alleles for both genes (p21 Ser31Arg and TP53 Arg72Pro) had an increased risk (adjusted OR 5.78; 95% CI 1.38-24.19), as did smokers with both risk alleles (adjusted OR 4.52; 95% CI 1.52-13.50). CONCLUSION The presence of both variant alleles increased the risk of developing lung cancer in men, particularly in smokers younger than 55 years.
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Affiliation(s)
- Ana Souto-García
- Molecular Epidemiolgy of Cancer Unit, University Institute of Oncology, University of Oviedo, Oviedo, Asturias, Spain; Consortium for Research in Epidemiology and Public Health (CIBERESP), Spain
| | - Ana Fernández-Somoano
- Molecular Epidemiolgy of Cancer Unit, University Institute of Oncology, University of Oviedo, Oviedo, Asturias, Spain; Consortium for Research in Epidemiology and Public Health (CIBERESP), Spain
| | - Teresa Pascual
- Pneumology Department, Cabueñes Hospital, Gijón, Asturias, Spain
| | - Sara M Álvarez-Avellón
- Molecular Epidemiolgy of Cancer Unit, University Institute of Oncology, University of Oviedo, Oviedo, Asturias, Spain; Consortium for Research in Epidemiology and Public Health (CIBERESP), Spain
| | - Adonina Tardón
- Molecular Epidemiolgy of Cancer Unit, University Institute of Oncology, University of Oviedo, Oviedo, Asturias, Spain; Consortium for Research in Epidemiology and Public Health (CIBERESP), Spain
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Ma H, Zhou Z, Wei S, Wei Q. Association between p21 Ser31Arg polymorphism and cancer risk: a meta-analysis. CHINESE JOURNAL OF CANCER 2012; 30:254-63. [PMID: 21439247 PMCID: PMC4013352 DOI: 10.5732/cjc.010.10587] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
P21 (CDKN1A), a key cell cycle regulatory protein that governs cell cycle progression from G1 to S phase, can regulate cell proliferation, growth arrest, and apoptosis. The Ser31Arg polymorphism is located in the highly conserved region of p21 and may encode functionally distinct proteins. Although many epidemiological studies have been conducted to evaluate the association between the p21 Ser31Arg polymorphism and cancer risk, the findings remain conflicting. This meta-analysis with 33 077 cases and 45 013 controls from 44 published case-control studies showed that the variant homozygous 31Arg/Arg genotype was associated with an increased risk of numerous types of cancers in a random-effect model (homozygote comparison: OR = 1.17, 95% CI = 0.99 to 1.37, P = 0.0002 for the heterogeneity test; recessive model comparison: OR = 1.16, 95% CI = 1.01 to 1.33, P = 0.0001 for the heterogeneity test). Stratified analysis revealed that increased cancer risk associated with the 31Arg/Arg genotype remained significant in subgroups of colorectal cancer, estrogen-related cancer, Caucasians, population-based studies, studies with matching information or a larger sample size. Heterogeneity analysis showed that tumor type contributed to substantial between-study heterogeneity (recessive model comparison: Χ(2) = 21.83, df = 7, P = 0.003). The results from this large-sample sized meta-analysis suggest that the p21 31Arg/Arg genotype may serve as a potential marker for increased cancer risk.
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Affiliation(s)
- Hongxia Ma
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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Association between variations in cell cycle genes and idiopathic pulmonary fibrosis. PLoS One 2012; 7:e30442. [PMID: 22291954 PMCID: PMC3264581 DOI: 10.1371/journal.pone.0030442] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Accepted: 12/21/2011] [Indexed: 11/19/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a devastating and progressive lung disease. Its aetiology is thought to involve damage to the epithelium and abnormal repair. Alveolar epithelial cells near areas of remodelling show an increased expression of proapoptotic molecules. Therefore, we investigated the role of genes involved in cell cycle control in IPF. Genotypes for five single nucleotide polymorphisms (SNPs) in the tumour protein 53 (TP53) gene and four SNPs in cyclin-dependent kinase inhibitor 1A (CDKN1A), the gene encoding p21, were determined in 77 IPF patients and 353 controls. In peripheral blood mononuclear cells (PBMC) from 16 healthy controls mRNA expression of TP53 and CDKN1A was determined. Rs12951053 and rs12602273, in TP53, were significantly associated with survival in IPF patients. Carriers of a minor allele had a 4-year survival of 22% versus 57% in the non-carrier group (p = 0.006). Rs2395655 and rs733590, in CDKN1A, were associated with an increased risk of developing IPF. In addition, the rs2395655 G allele correlated with progression of the disease as it increased the risk of a rapid decline in lung function. Functional experiments showed that rs733590 correlated significantly with CDKN1A mRNA expression levels in healthy controls. This is the first study to show that genetic variations in the cell cycle genes encoding p53 and p21 are associated with IPF disease development and progression. These findings support the idea that cell cycle control plays a role in the pathology of IPF. Variations in TP53 and CDKN1A can impair the response to cell damage and increase the loss of alveolar epithelial cells.
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Association study of selected genetic polymorphisms and occurrence of venous thromboembolism in patients with multiple myeloma who were treated with thalidomide. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2011; 11:414-20. [PMID: 21859556 DOI: 10.1016/j.clml.2011.03.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 03/04/2011] [Accepted: 03/07/2011] [Indexed: 11/23/2022]
Abstract
INTRODUCTION/BACKGROUND Venous thromboembolism (VTE), with the subsequent risk of pulmonary embolism, is a common adverse effect of thalidomide treatment in patients with multiple myeloma (MM). In our retrospective study, we analyzed candidate single-nucleotide polymorphisms (SNP), CINP (rs7011), CETP (rs289747), ALDH1A1 (rs610529), CDKN1A (rs3829963), GAN (rs2608555), vascular endothelial growth factor (rs699947), and ALDH1A1 (rs168351), previously identified in a large association study based on the hypothesis-driven candidate gene approach nominated by the International Myeloma Foundation "Bank On A Cure" (3404 SNPs). In that study, the researchers built a classification tree that enables prediction of individual risk of VTE in patients with MM. PATIENTS AND METHODS Genotypes of these SNPs were determined in an independent cohort of 111 patients with MM through TaqMan real-time polymerase chain reaction (PCR) allelic discrimination and were used for prediction of individual VTE risk. RESULTS The results of this study did not confirm the ability of this classification tree to predict VTE risk in patients with MM from the Czech Republic; of these patients, 21 (19%) developed high-grade VTE. However, in patients with VTE, we found higher frequency of the AC genotype in the CDKN1A gene (42.9% vs. 16.7%; odds ratio 3.64) in comparison with the CC genotype (P = .015). SNPs of other genes as well as age and sex of the patients had no statistically significant influence on the risk of VTE. CONCLUSION Further studies are needed to confirm the initial analysis that provided predictive information of genetic variations in patients with myeloma that may influence risk of VTE.
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Liu F, Li B, Wei Y, Chen X, Ma Y, Yan L, Wen T. P21 codon 31 polymorphism associated with cancer among white people: evidence from a meta-analysis involving 78 074 subjects. Mutagenesis 2011; 26:513-21. [DOI: 10.1093/mutage/ger010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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[Research progress of lung cancer on single nuleotide polymorphism]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2011; 14:156-64. [PMID: 21342648 PMCID: PMC5999771 DOI: 10.3779/j.issn.1009-3419.2011.02.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jiang P, Liu J, Li W, Zeng X, Tang J. Role of p53 and p21 polymorphisms in the risk of cervical cancer among Chinese women. Acta Biochim Biophys Sin (Shanghai) 2010; 42:671-6. [PMID: 20732856 DOI: 10.1093/abbs/gmq069] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The objective of this study was to identify whether polymorphic variants of p53 at codon 72 and p21 at codon 31 were associated with increased risk for cervical cancer, either independently or jointly, among Chinese women from southern Han. We genotyped p53 codon 72 and p21 codon 31 polymorphisms of peripheral blood DNA from 104 cervical cancer patients and 160 controls. Genotyping was confirmed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and direct DNA sequencing. We observed an increased risk of cervical cancer associated with the p53 Arg/Arg (OR, 2.25; 95% CI, 1.11-4.54) or p21 Ser/Ser (OR, 2.09; 95% CI, 1.04-4.19) genotype, compared with the p53 Pro/Pro or p21 Arg/Arg genotype, respectively. In additional, interaction between these p53 and p21 polymorphisms increased the risk of cervical cancer in a multiplicative manner, with the OR being 3.96 (95% CI, 1.51-10.41) for subjects carrying both p53 Arg/Arg and p21 Ser/Ser genotypes. These findings suggest that there is a significant association between the genetic polymorphism of p53, p21, and the risk of cervical cancer among Chinese southern women, and there is a possible gene-gene interaction in the incidence of cervical cancer.
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Affiliation(s)
- Pei Jiang
- Central South University, Changsha, China
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Liu B, Zhang Y, Jin M, Ni Q, Liang X, Ma X, Yao K, Li Q, Chen K. Association of selected polymorphisms of CCND1, p21, and caspase8 with colorectal cancer risk. Mol Carcinog 2010; 49:75-84. [PMID: 19795398 DOI: 10.1002/mc.20579] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
It has been well elucidated that the signal transduction of cell-cycle control pathway and apoptosis pathway plays an important role in the normal growth and differentiation of organisms. To test the hypothesis that mutants of key genes involved in cell-cycle regulation and apoptosis might contribute to the increased risk of colorectal cancer (CRC), a population-based case-control study was carried out in Jiashan County, Zhejiang Province. The study population was composed of 373 CRC cases and 838 controls. Five genetic variants including CCND1 G870A, p21 codon31 C/A, p21 3'UTR C/T, caspase8 IVS12-19G/A, and caspase8 6n del/ins were genotyped. The associations of the polymorphisms with CRC were estimated by logistical regression model after adjustment for the important covariates. The interactive effect among the five selected genetic polymorphisms on CRC was explored by multifactor dimensionality reduction (MDR) software. The significant association between five single-nucleotide polymorphisms (SNPs) and CRC risk was not observed, respectively. However, caspase8 del/del showed a marginally significant association with the increased risk of rectum cancer [adjusted odds ratio (OR) (95% confidence interval, CI) = 1.92 (0.97-3.79); P = 0.06]. Furthermore, the MDR analysis indicated that the best interactive model for CRC included three factors-CCND1 G870A, caspase8 IVS12-19G/A, and caspase8 6 n del/ins-with 53.44% testing balanced accuracy and 10/10 cross-validation consistency, but the model was no longer significant after the 1000 times permutation test (P = 0.25). Our findings suggest that the selected polymorphisms of p21, CCND1, and caspase8 may not contribute to the risk of colorectal cancer.
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Affiliation(s)
- Bing Liu
- Department of Epidemiology and Health Statistics, Zhejiang University, Hangzhou, China
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Yang W, Qi Q, Zhang H, Xu W, Chen Z, Wang L, Wang Y, Dong X, Jiao H, Huo Z. p21 Waf1/Cip1 Polymorphisms and Risk of Esophageal Cancer. Ann Surg Oncol 2010; 17:1453-8. [DOI: 10.1245/s10434-009-0882-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2009] [Indexed: 11/18/2022]
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Lei D, Sturgis EM, Liu Z, Zafereo ME, Wei Q, Li G. Genetic polymorphisms of p21 and risk of second primary malignancy in patients with index squamous cell carcinoma of the head and neck. Carcinogenesis 2009; 31:222-7. [PMID: 19955391 DOI: 10.1093/carcin/bgp279] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
p21 plays an important role in modulating cell cycle control, inducing apoptosis, and inhibiting cell growth, subsequently affecting cancer risk. We investigated the association between two putatively functional single-nucleotide polymorphisms (SNPs) of p21 (p21 C98A and p21 C70T) among 1282 patients diagnosed with incident squamous cell carcinoma of the head and neck (SCCHN) and risk of second primary malignancy (SPM) in an ongoing molecular epidemiology study. We used Log-rank test and Cox proportional hazard models to assess the association of these two SNPs with SPM-free survival and SPM risk. We found that patients with either p21 variant genotypes of the two polymorphisms had a significantly reduced SPM-free survival compared with patients with either p21 wild-type homozygous genotypes (Log-rank test, P = 0.0016). Compared with patients having the p21 98 CC and p21 70 CC genotypes, the patients having p21 98 CA/AA and p21 70 CT/TT variant genotypes had a significantly greater risk of developing SPM, respectively, [hazard ratio (HR) = 1.80, 95% CI = 1.14-2.82 for p21 C98A and HR = 1.82, 95% confidence interval (CI) = 1.16-2.85 for p21 C70T]. Moreover, after combining the variant genotypes of two SNPs, patients with variant genotypes had a significantly moderately increased risk for SPM compared with patients with no variant genotypes (HR = 2.00, 95% CI = 1.26-3.00), and the risk was particularly pronounced in several subgroups. Our results support an increased risk of SPM after index SCCHN with both p21 polymorphisms individually and in combination.
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Affiliation(s)
- Dapeng Lei
- Department of Head and Neck Surgery, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
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Imboden M, Schwartz J, Schindler C, Curjuric I, Berger W, Liu SL, Russi EW, Ackermann-Liebrich U, Rochat T, Probst-Hensch NM. Decreased PM10 exposure attenuates age-related lung function decline: genetic variants in p53, p21, and CCND1 modify this effect. ENVIRONMENTAL HEALTH PERSPECTIVES 2009; 117:1420-7. [PMID: 19750108 PMCID: PMC2737020 DOI: 10.1289/ehp.0800430] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2008] [Accepted: 05/26/2009] [Indexed: 05/05/2023]
Abstract
BACKGROUND Decreasing exposure to airborne particulates was previously associated with reduced age-related decline in lung function. However, whether the benefit from improved air quality depends on genetic background is not known. Recent evidence points to the involvement of the genes p53 and p21 and of the cell cycle control gene cyclin D1 (CCND1) in the response of bronchial cells to air pollution. OBJECTIVE We determined in 4,326 participants of the Swiss Cohort Study on Air Pollution and Lung and Heart Diseases in Adults (SAPALDIA) whether four single-nucleotide polymorphisms in three genes [CCND1 (rs9344 [P242P], rs667515), p53 (rs1042522 [R72P]), and p21 (rs1801270 [S31R])] modified the previously observed attenuation of the decline in the forced expiratory flow between 25% and 75% of the forced vital capacity (FEF(25-75)) associated with improved air quality. METHODS Subjects of the prospective population-based SAPALDIA cohort were assessed in 1991 and 2002 by spirometry, questionnaires, and biological sample collection for genotyping. We assigned spatially resolved concentrations of particulate matter with aerodynamic diameter < or = 10 microm (PM(10)) to each participant's residential history 12 months before the baseline and follow-up assessments. RESULTS The effect of diminishing PM(10) exposure on FEF(25-75) decline appeared to be modified by p53 R72P, CCND1 P242P, and CCND1 rs667515. For example, a 10-microg/m(3) decline in average PM(10) exposure over an 11-year period attenuated the average annual decline in FEF(25-75) by 21.33 mL/year (95% confidence interval, 10.57-32.08) among participants homozygous for the CCND1 (P242P) GG genotype, by 13.72 mL/year (5.38-22.06) among GA genotypes, and by 6.00 mL/year (-4.54 to 16.54) among AA genotypes. CONCLUSIONS Our results suggest that cell cycle control genes may modify the degree to which improved air quality may benefit respiratory function in adults.
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Affiliation(s)
- Medea Imboden
- Department of Chronic Disease Epidemiology, Institute of Social and Preventive Medicine and
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Joel Schwartz
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachussetts, USA
| | - Christian Schindler
- Institute of Social and Preventive Medicine, University of Basel, Basel, Switzerland
| | - Ivan Curjuric
- Department of Chronic Disease Epidemiology, Institute of Social and Preventive Medicine and
- Institute of Social and Preventive Medicine, University of Basel, Basel, Switzerland
| | - Wolfgang Berger
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Sally L.J. Liu
- Institute of Social and Preventive Medicine, University of Basel, Basel, Switzerland
| | - Erich W. Russi
- Department of Pneumology, University Hospital Zurich, Zurich, Switzerland
| | | | - Thierry Rochat
- Division of Pulmonary Medicine, University Hospitals Geneva, Geneva, Switzerland
| | - Nicole M. Probst-Hensch
- Department of Chronic Disease Epidemiology, Institute of Social and Preventive Medicine and
- Address correspondence to N.M. Probst-Hensch, Department of Chronic Disease Epidemiology, Institute of Social and Preventive Medicine, Sumatrastrasse 30, CH-8006 Zurich, Switzerland. Telephone: 41-44-634-53-73. Fax: 41-44-634-40-09. E-mail:
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Abstract
The normal functioning of p53 is a potent barrier to cancer. Tumour-associated mutations in TP53, typically single nucleotide substitutions in the coding sequence, are a hallmark of most human cancers and cause dramatic defects in p53 function. By contrast, only a small fraction, if any, of the >200 naturally occurring sequence variations (single nucleotide polymorphisms, SNPs) of TP53 in human populations are expected to cause measurable perturbation of p53 function. Polymorphisms in the TP53 locus that might have cancer-related phenotypical manifestations are the subject of this Review. Polymorphic variants of other genes in the p53 pathway, such as MDM2, which might have biological consequences either individually or in combination with p53 variants are also discussed.
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Affiliation(s)
- Catherine Whibley
- Leeds Institute of Genetics, Health and Therapeutics, LIGHT Laboratories, University of Leeds, Leeds, LS2 9JT, UK
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