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Zhou F, Zhang Y, Xu X, Luo J, Yang F, Wang L, Xie S, Sun J, Yang X. Establishment and characterization of three stable Basal/HER2-positive breast cancer cell lines derived from Chinese breast carcinoma with identical missense mutations in the DNA-binding domain of TP53. Cancer Cell Int 2018; 18:118. [PMID: 30140169 PMCID: PMC6098622 DOI: 10.1186/s12935-018-0617-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 08/09/2018] [Indexed: 12/31/2022] Open
Abstract
Background Basal/human epidermal growth factor receptor (HER)2-positive (HER2+) breast cancer is resistant to monoclonal antibody (herceptin) treatment. There are currently only three basal/HER2+ breast cancer cell lines available, but they are not from Chinese populations. Methods Three immortalized cell lines (ZJU-0327, ZJU-0725, and ZJU-1127) were established from invasive ductal breast carcinoma tissue of two patients treated by surgical resection at our center. The cell lines were characterized in terms of histology, therapeutic response, and biomarker expression. Their tumorigenic potential was evaluated in an athymic nude (BALB/C nu) mouse xenograft model. Cell authentication testing by the techniques of short tandem repeat. Results ZJU-0327, ZJU-0725, and ZJU-1127 cell lines were maintained for more than 110 passages in vitro. The cells grew as monolayers; showed typical epithelial morphology and ultrastructure; were polyploid; had doubling times of 18, 57.5, and 18 h, respectively; had a near-tetraploid (ZJU-0327 and ZJU-1127) or aneuploid (ZJU-0725) karyotype with structural aberrations and tumor protein 53 mutation; insensitive to chemotherapeutic drugs and/or radiation; show high invasiveness and tumorigenicity in mice; and had no mycoplasma contamination. The cell lines were basal/HER2+, expressed cluster of differentiation, and were associated with poor prognosis. Cell authentication testing by the American Type Culture Collection confirmed the human origin of the cell lines, which did not match those in existing databases. Conclusions The three novel basal/HER2+ breast cancer cell lines recapitulating the malignant characteristics of the parent tumor's, and can be useful for clarifying the molecular pathogenesis of basal/HER2+ breast cancer.
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Affiliation(s)
- Fei Zhou
- 1Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Yanhua Zhang
- 2Department of Pathology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Xiufang Xu
- Department of Medical Imagine, Hangzhou Medical College, Hangzhou, Zhejiang China
| | - Jingfeng Luo
- 1Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Fang Yang
- 2Department of Pathology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Linbo Wang
- 4Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Shuduo Xie
- 4Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Jihong Sun
- 1Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Xiaoming Yang
- 1Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China.,5Image-Guided Bio-Molecular Intervention Research, Department of Radiology, University of Washington School of Medicine, Seattle, WA USA
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2
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Akhter N, Dar SA, Chattopadhyay S, Haque S, Anwer R, Wahid M, Jawed A, Lohani M, Mandal RK, Shukla NK, Abdul Y, Husain SA. Impact of p53 arg72pro SNP on Breast Cancer Risk in North Indian Population. Curr Genomics 2018; 19:395-410. [PMID: 30065615 PMCID: PMC6030857 DOI: 10.2174/1389202919666171205104137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 10/25/2017] [Accepted: 10/26/2017] [Indexed: 12/31/2022] Open
Abstract
Background: Genetic changes in p53 gene contribute to breast cancer susceptibility. Objective and Methods: A case-control study and a meta-analysis were performed to investigate the role of p53 codon72 SNP with breast cancer susceptibility in Indian women. Results: p53 heterozygous arginine variant was associated with decreased risk of breast cancer in total cohort. In meta-analysis, Allelic and GG vs. CC genetic comparison model were found to be associated with breast cancer risk. Moreover, recessive comparison model indicated a protective correlation with breast cancer occurrence. Conclusion: The findings of our case-control study and meta-analysis suggest a significant association between p53 Arg72Pro polymorphism and an increased risk of breast cancer in Indian population.
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Affiliation(s)
- Naseem Akhter
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Albaha University, Albaha, Saudi Arabia.,Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi-110025, India
| | - Sajad A Dar
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | - Shilpi Chattopadhyay
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi-110025, India
| | - Shafiul Haque
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi-110025, India.,Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | - Razique Anwer
- Department of Anatomy, College of Medicine, Al Imam Mohammad Ibn Saud Islamic University, Riyadh, Saudi Arabia
| | - Mohd Wahid
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi-110025, India.,Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | - Arshad Jawed
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | - Mohtashim Lohani
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia.,Department of Biosciences, Integral University, Lucknow - 226026, Uttar Pradesh, India
| | - Raju K Mandal
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan-45142, Saudi Arabia
| | | | | | - Syed Akhtar Husain
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), New Delhi-110025, India
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3
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Tian X, Dai S, Sun J, Jiang S, Jiang Y. The association between the TP53 Arg72Pro polymorphism and colorectal cancer: An updated meta-analysis based on 32 studies. Oncotarget 2018; 8:1156-1165. [PMID: 27901479 PMCID: PMC5352043 DOI: 10.18632/oncotarget.13589] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 11/08/2016] [Indexed: 02/07/2023] Open
Abstract
Several previous studies evaluated the association between the Arg72Pro (rs1042522) polymorphism in the TP53 tumor suppressor gene and colorectal cancer (CRC). However, the results are conflicting. This meta-analysis aimed to shed new light on the precise association between TP53 variants and CRC. We analyzed 32 published case-control studies involving 8,586 cases and 10,275 controls using crude odd ratios (ORs) with 95% confidence intervals (CIs). The meta-analysis was performed using a fixed-effect or random-effects model, as appropriate. We found that the TP53 Arg72Pro polymorphism was not significantly associated with CRC risk in the overall population. However, subgroup analysis based on ethnicity revealed an increased risk of CRC among Asians (CC vs. GC+GG: OR=1.22, 95% CI: 1.02-1.45), and similar results were found for rectal cancer (CC vs. GC+GG: OR=1.34, 95% CI: 1.120-1.62). These results suggest that the TP53 Arg72Pro polymorphism CC genotype may contribute to an increased risk of CRC, especially for rectal cancer and among Asians.
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Affiliation(s)
- Xin Tian
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, 110001, PR China
| | - Shundong Dai
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001, PR China.,Institute of Pathology and Pathophysiology, Shenyang, 110001, PR China
| | - Jing Sun
- Department of Immunology and Biotherapy, Liaoning Cancer Hospital and Institute, Shenyang, 110042, PR China
| | - Shenyi Jiang
- Department of Rheumatology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, PR China
| | - Youhong Jiang
- Molecular Oncology Laboratory of Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, 110001, PR China
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4
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Katkoori VR, Manne U, Chaturvedi LS, Basson MD, Haan P, Coffey D, Bumpers HL. Functional consequence of the p53 codon 72 polymorphism in colorectal cancer. Oncotarget 2017; 8:76574-76586. [PMID: 29100333 PMCID: PMC5652727 DOI: 10.18632/oncotarget.20580] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 08/16/2017] [Indexed: 01/22/2023] Open
Abstract
Background The codon 72 polymorphism in p53 has been implicated in colorectal cancer (CRC) risk, prognosis and CRC health disparities. We examined the functional consequence of this polymorphism in CRC. Experimental Design Plasmids (pCMV6) that express different phenotypes of p53 [p53 wild type (wt) at codon 72 (R72wt), R72wt with mutation at codon 273 cysteine (R72273Cys), p53 mutation at codon 72 (P72wt) and P72wt with mutation at codon 273 (P72273Cys)] were constructed. The CRC cell line Caco2, which does not express p53 for in vitro studies, was used as host. CRC xenografts were established in severe combined immunodeficient (SCID) mice using established cell lines. CRC surgical specimens, corresponding normal colon, and tumor xenografts were sequenced for codon 72 polymorphism of p53. Proteins signaling mechanisms were evaluated to assess the functional consequence of P72 phenotype of p53. Results This study demonstrated a significantly increased survival of cells expressing P72wt, mutant phenotype, versus R72wt phenotype. WB analyses revealed that P72wt induced activation of p38 and RAF/MEK/ extracellular signal-regulated kinase (ERK) MAP kinases. Activation of CREB was found to be higher in tumors that exhibit P72 phenotype. Metastatic lesions of CRC expressed more phospho-CREB than non-metastatic lesions. The expression of P72wt promoted CRC metastasis. Conclusions P72 contributes to the aggressiveness of CRC. Because P72 is over-expressed in CRC, specifically in African-American patients, this suggests a role for P72 in cancer health disparities. This work was supported by NIH/NCI Workforce Diversity Grant R21-CA171251 & U54CA118948.
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Affiliation(s)
- Venkat R Katkoori
- Department of Surgery, Michigan State University, College of Human Medicine, Lansing, MI, USA
| | - Upender Manne
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lakshmi S Chaturvedi
- Department of Surgery, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, ND, USA
| | - Marc D Basson
- Department of Surgery, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, ND, USA
| | - Pam Haan
- Department of Surgery, Michigan State University, College of Human Medicine, Lansing, MI, USA
| | | | - Harvey L Bumpers
- Department of Surgery, Michigan State University, College of Human Medicine, Lansing, MI, USA
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5
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Manne U, Jadhav T, Putcha BDK, Samuel T, Soni S, Shanmugam C, Suswam EA. Molecular Biomarkers of Colorectal Cancer and Cancer Disparities: Current Status and Perspective. CURRENT COLORECTAL CANCER REPORTS 2016. [PMID: 28626361 DOI: 10.1007/s11888-016-0338-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
This review provides updates on the efforts for the development of prognostic and predictive markers in colorectal cancer based on the race/ethnicity of patients. Since the clinical consequences of genetic and molecular alterations differ with patient race and ethnicity, the usefulness of these molecular alterations as biomarkers needs to be evaluated in different racial/ethnic groups. To accomplish personalized patient care, a combined analysis of multiple molecular alterations in DNA, RNA, microRNAs (miRNAs), metabolites, and proteins in a single test is required to assess disease status in a precise way. Therefore, a special emphasis is placed on issues related to utility of recently identified genetic and molecular alterations in genes, miRNAs, and various "-omes" (e.g., proteomes, kinomes, metabolomes, exomes, methylomes) as candidate molecular markers to determine cancer progression (disease recurrence/relapse and metastasis) and to assess the efficacy of therapy in colorectal cancer in relation to patient race and ethnicity. This review will be useful for oncologists, pathologists, and basic and translational researchers.
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Affiliation(s)
- Upender Manne
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA.,Comprehensive Cancer Center, Wallace Tumor Institute, University of Alabama at Birmingham, Room # 420A, 1530 3rd Avenue South, Birmingham, AL 35294, USA
| | - Trafina Jadhav
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA.,Wallace Tumor Institute, University of Alabama at Birmingham, Room # 430A, 1530 3rd Avenue South, Birmingham, AL 35294, USA.,Present address: Division of Cardiovascular Medicine, Vanderbilt University, 1215 21st Avenue South, Medical Center East, Suite 5050, Nashville, TN 37232-8802, USA
| | - Balananda-Dhurjati Kumar Putcha
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA.,Wallace Tumor Institute, University of Alabama at Birmingham, Room # 430A, 1530 3rd Avenue South, Birmingham, AL 35294, USA.,Present address: 2502 East Woodlands, Saint Joseph, MO 64506, USA
| | - Temesgen Samuel
- Department of Pathobiology, College of Veterinary Medicine, Nursing and Allied Health, Tuskegee University, Tuskegee, AL 36088, USA
| | - Shivani Soni
- Department of Biological Sciences, Alabama State University, Room # 325, Life Science Building, 1627, Hall Street, Montgomery, AL 36104, USA
| | - Chandrakumar Shanmugam
- Wallace Tumor Institute, University of Alabama at Birmingham, Room # 430A, 1530 3rd Avenue South, Birmingham, AL 35294, USA.,Present address: Department of Pathology, ESIC Medical College and Hospital, Sanathnagar, Hyderabad, Telangana 500 038, India
| | - Esther A Suswam
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA.,Department of Pathology, Wallace Tumor Institute, University of Alabama at Birmingham, 1720 2nd Avenue South, # 410C, Birmingham, AL 35294-3300, USA
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6
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Pandrangi SL, Raju Bagadi SA, Sinha NK, Kumar M, Dada R, Lakhanpal M, Soni A, Malvia S, Simon S, Chintamani C, Mohil RS, Bhatnagar D, Saxena S. Establishment and characterization of two primary breast cancer cell lines from young Indian breast cancer patients: mutation analysis. Cancer Cell Int 2014; 14:14. [PMID: 24502646 PMCID: PMC4016554 DOI: 10.1186/1475-2867-14-14] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 02/01/2014] [Indexed: 12/11/2022] Open
Abstract
Two novel triple negative breast cancer cell lines, NIPBC-1 and NIPBC-2 were successfully established from primary tumors of two young breast cancer patients aged 39 and 38 years respectively, diagnosed as infiltrating duct carcinoma of breast. Characterization of these cell lines showed luminal origin with expression of epithelial specific antigen and cytokeratin 18 and presence of microfilaments and secretary vesicles, microvilli, tight junctions and desmosomes on ultra-structural analysis. Both the cell lines showed anchorage independent growth and invasion of matrigel coated membranes. Karyotype analysis showed aneuploidy, deletions and multiple rearrangements in chromosomes 7, 9, X and 11 and isochromosomes 17q in both the cell lines. P53 mutational analysis revealed no mutation in the coding region in both the cell lines; however NIPBC-2 cell line showed presence of heterozygous C/G polymorphism, g.417 C > G (NM_000546.5) resulting in Arg/Pro allele at codon 72 of exon 4. Screening for mutations in BRCA1&2 genes revealed presence of three heterozygous polymorphisms in exon 11 of BRCA1 and 2 polymorphisms in exons 11, and14 of BRCA2 gene in both the cell lines. Both the cell lines showed presence of CD 44+/24-breast cancer stem cells and capability of producing mammosphere on culture. The two triple negative breast cancer cell lines established from early onset breast tumors can serve as novel invitro models to study mechanisms underlying breast tumorigenesis in younger age group patients and also identification of new therapeutic modalities targeting cancer stem cells.
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Affiliation(s)
- Santhi Latha Pandrangi
- National Institute of Pathology (ICMR), Safdarjung Hospital Campus, New Delhi 110029, India
| | | | - Navin Kumar Sinha
- Rajiv Gandhi Cancer Institute and Research Centre, Rohini, New Delhi, India
| | - Manoj Kumar
- Lab for Molecular Reproduction and Genetics, Anatomy department, All India Institute of medical Sciences, New Delhi, India
| | - Rima Dada
- Lab for Molecular Reproduction and Genetics, Anatomy department, All India Institute of medical Sciences, New Delhi, India
| | - Meena Lakhanpal
- National Institute of Pathology (ICMR), Safdarjung Hospital Campus, New Delhi 110029, India
| | - Abha Soni
- National Institute of Pathology (ICMR), Safdarjung Hospital Campus, New Delhi 110029, India
| | - Shreshtha Malvia
- National Institute of Pathology (ICMR), Safdarjung Hospital Campus, New Delhi 110029, India
| | - Sheeba Simon
- National Institute of Pathology (ICMR), Safdarjung Hospital Campus, New Delhi 110029, India
| | | | | | - Dinesh Bhatnagar
- Department of Surgery, Safdarjung Hospital Campus, New Delhi 110029, India
| | - Sunita Saxena
- National Institute of Pathology (ICMR), Safdarjung Hospital Campus, New Delhi 110029, India
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7
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Pandith AA, Khan NP, Rashid N, Azad N, Zaroo I, Hafiz A, Siddiqi MA. Impact of codon 72 Arg > Pro single nucleotide polymorphism in TP53 gene in the risk of kangri cancer: a case control study in Kashmir. Tumour Biol 2012; 33:927-33. [PMID: 22249977 DOI: 10.1007/s13277-012-0318-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 01/03/2012] [Indexed: 11/30/2022] Open
Abstract
Kangri cancer found only in Kashmir (north India) is a unique thermally induced squamous cell carcinoma of the skin that develops because of chronic and persistent irritation due to the use of a kangri (a brazier) by the Kashmiri people to combat the chilling cold temperature during winter. Being unique to this region, the molecular etiology of the invasive kangri cancer is not known fully. The TP53 gene, codon 72 polymorphism (Arg72Pro), has been found to be associated with cancer susceptibility but has not been investigated in kangri cancer risk. A case control study was conducted to find the genotype distribution of TP53 Arg72Pro SNP and to elucidate the possible role of this SNP as risk factor in kangri cancer development. Using the polymerase chain reaction-restriction fragment length polymorphism approach, we tested the genotype distribution of 106 kangri cancer patients in comparison with 200 cancer-free controls from the same geographical region. A significant difference was observed between the control and kangri cancer patients with odds ratio = 2.02 and 95% confidence interval = 1.2-3.3 (p = 0.01). Interestingly, the proline form was abundantly observed in advanced-grade tumors (p < 0.05). We also found a significant association of the variant allele (GC + CC) with male subjects and patients >45 years of age (p < 0.05). Thus, it is evident from our study that Arg72Pro SNP is implicated in kangri cancer and that the rare, proline-related allele is connected with higher susceptibility to kangri cancer.
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Affiliation(s)
- Arshad A Pandith
- Department of Immunology and Molecular Medicine, Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Kashmir, India 190011
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8
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Lin HY, Huang CH, Yu TJ, Wu WJ, Yang MC, Lung FW. p53 codon 72 polymorphism as a progression index for bladder cancer. Oncol Rep 2011; 27:1193-9. [PMID: 22200788 PMCID: PMC3583606 DOI: 10.3892/or.2011.1610] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Accepted: 10/27/2011] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to calculate the positive predictive value (PPV) and negative predictive value (NPV) to determine whether p53 codon 72 can be used as a bladder cancer management index. Ninety-six patients diagnosed with bladed cancer and two control groups of 427 randomly sampled community participants and 142 non-cancerous individuals without a prior history of cancer were enrolled. After preliminary analysis, the convergent validity resulted in 96 patients from this study and 129 patients from our previous study. Results showed that these two groups were of the same population, and could be merged into one case group. Logistic regression showed that the Pro/Pro genotype was not statistically significantly associated with bladder cancer incidence using each sample set after adjustment by age and gender. Moreover, the Pro/Pro genotype was not associated with high-grade tumors (P=0.078), but was highly correlated to muscle-invasive tumors (P=0.002). Pro/Pro genotype carriers were estimated to have a 3.36-fold higher risk to develop invasive tumors compared to non-carriers. The NPV of the Pro/Pro genotype for invasive tumors was 88.00%, and the PPV was 31.91%. By Cox regression analysis, high-grade tumors were associated with recurrence (P=0.020, OR=1.83), whereas invasive tumors were associated with cancer-related death (P<0.001, OR=2.87). p53 codon 72 polymorphism is associated with bladder cancer progression rather than incidence and prognosis. The Pro/Pro genotype in p53 codon 72 polymorphism shows a high NPV for bladder cancer progression, thus, it can be used clinically as a progression index in bladder cancer management.
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Affiliation(s)
- Hung-Yu Lin
- Department of Urology, E-DA Hospital/I-SHOU University, Kaohsiung, Taiwan, ROC
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9
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Lin HY, Yang MC, Huang CH, Wu WJ, Yu TJ, Lung FW. Polymorphisms of TP53 are markers of bladder cancer vulnerability and prognosis. Urol Oncol 2011; 31:1231-41. [PMID: 22178231 DOI: 10.1016/j.urolonc.2011.11.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 11/09/2011] [Accepted: 11/15/2011] [Indexed: 12/19/2022]
Abstract
OBJECTIVES We have reported previously that the TP53 codon72 polymorphism (rs1042522) is associated with the incidence and invasiveness of bladder cancer in a Han Chinese population. Using an enlarged sample, we investigated the role of rs1042522 and of tagSNPs that were predicted to be in linkage disequilibrium with codon72 in relation to the incidence, invasiveness, and prognosis of bladder cancer. METHODS AND MATERIALS A sample of 201 patients and 311 controls without cancer were genotyped for 5 tagSNPs using tetra-primer ARMS and/or an allele-specific PCR technique. RESULTS The genotyped data were analyzed using Haploview 4.2, and a 10,000-permutation test showed that the rs9895829G allele (P = 0.003) and the rs1788227C allele (P = 0.027) were both associated with the incidence of bladder cancer. With respect to haplotype associations, after the data were adjusted for age, the haplotypes GTT (P = 0.001) and GGTC (P < 0.001) were correlated with a low incidence of bladder cancer. In contrast, none of the TP53 haplotypes were associated significantly with high tumor grade or muscle invasiveness. On the basis of Cox regression analysis, haplotype CGCC and invasiveness were associated with cancer-related death. Structural equation modeling showed that haplotypes GGCC and CGCC played opposing roles with respect to bladder cancer-related death; haplotype GGCC was a protective factor, whereas haplotype CGCC was a risk factor. CONCLUSIONS The TP53 codon72 polymorphism appears to play a crucial role in determining the association between TP53 haplotype and the incidence and prognosis of bladder cancer. Further functional assays to confirm whether these TP53 haplotypic variants interact with the proteins N-Myc and NDRG is necessary.
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Affiliation(s)
- Hung-Yu Lin
- Department of Urology, E-DA Hospital/I-SHOU University, Kaohsiung, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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10
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Huang CY, Su CT, Chu JS, Huang SP, Pu YS, Yang HY, Chung CJ, Wu CC, Hsueh YM. The polymorphisms of P53 codon 72 and MDM2 SNP309 and renal cell carcinoma risk in a low arsenic exposure area. Toxicol Appl Pharmacol 2011; 257:349-55. [DOI: 10.1016/j.taap.2011.09.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 09/02/2011] [Accepted: 09/20/2011] [Indexed: 12/19/2022]
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Lin HY, Huang CH, Yu TJ, Wu WJ, Yang MC, Lung FW. p53 codon 72 polymorphism was associated with vulnerability, progression, but not prognosis of bladder cancer in a Taiwanese population: an implication of structural equation modeling to manage the risks of bladder cancer. Urol Int 2011; 86:355-60. [PMID: 21346315 DOI: 10.1159/000323599] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Accepted: 11/25/2010] [Indexed: 11/19/2022]
Abstract
INTRODUCTION p53 codon 72 polymorphism has been reported to be associated with bladder cancer incidence, progression and prognosis, but the association is still under debate. A tentative model was constructed to evaluate the association between p53 codon 72 polymorphism and bladder cancer. SUBJECTS AND METHODS In this study, a total of 554 participants were enrolled. The genotyping was carried out using PCR-RFLP and DNA direct sequencing. RESULTS The genotype distribution of p53 codon 72 polymorphism was significantly different between bladder cancer patients and controls (p = 0.039). In logistic regression, diagnostic age and genotype Pro/Pro were the risk factors for developing an invasive tumor. A 4.526-fold risk was estimated for the patients with Pro/Pro genotype as opposed to non-Pro/Pro genotype to develop invasive tumors. However, the extent of p53 codon 72 polymorphism did not predict bladder cancer prognosis. CONCLUSIONS A conceptual mode was constructed; in addition, the moderating and mediating analysis was also carried out in a structural equation model to resolve possible confounding effects. Taken together, p53 codon 72 polymorphism may be associated with bladder cancer incidence and progression, but not prognosis. Further study is needed to evaluate the usefulness of the constructed model in risk assessment.
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Affiliation(s)
- Hung-Yu Lin
- Department of Urology, E-DA Hospital/I-SHOU University, Kaohsiung Medical University, Kaohsiung, Taiwan
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12
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Wang JJ, Zheng Y, Sun L, Wang L, Yu PB, Dong JH, Zhang L, Xu J, Shi W, Ren YC. TP53 codon 72 polymorphism and colorectal cancer susceptibility: a meta-analysis. Mol Biol Rep 2010; 38:4847-53. [PMID: 21140221 DOI: 10.1007/s11033-010-0619-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Accepted: 11/26/2010] [Indexed: 02/07/2023]
Abstract
Colorectal cancer constitutes a significant proportion of the global burden of cancer morbidity and mortality. A number of studies have been conducted to explore whether TP53 codon 72 polymorphism is associated with colorectal cancer susceptibility. However, controversial results were obtained. In order to derive a more precise estimation of the relationship, we systematically searched Medline, Google scholar, and Ovid database for studies reported before May 2010. A total of 3603 colorectal cancer cases and 5524 controls were included. TP53 codon 72 polymorphism was not associated with colorectal cancer risk in all genetic models (for dominant model: OR = 0.99, 95% CI: 0.86-1.15; for recessive model: OR = 1.00, 95% CI: 0.81-1.23; for Arg/Pro vs. Arg/Arg: OR = 1.00, 95% CI: 0.87-1.15; for Pro/Pro vs. Arg/Arg: OR = 0.97, 95% CI: 0.76-1.25). In the subgroup analyses by ethnic groups and sources of controls, no significant associations were found in all models. Taken together, this meta-analysis suggested that the biologically usefulness of TP53 codon 72 polymorphism as a selection marker in colorectal cancer susceptibility may be very limited.
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Affiliation(s)
- Jing-Jun Wang
- Department of Center for Disease Control and Prevention of Shaanxi Province, 3 Jiandong Road, 710043 Xi'an, Shaanxi, People's Republic of China
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Pandith AA, Shah ZA, Khan NP, Rasool R, Afroze D, Yousuf A, Wani S, Siddiqi M. Role of TP53 Arg72Pro polymorphism in urinary bladder cancer predisposition and predictive impact of proline related genotype in advanced tumors in an ethnic Kashmiri population. ACTA ACUST UNITED AC 2010; 203:263-8. [DOI: 10.1016/j.cancergencyto.2010.08.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2010] [Revised: 07/07/2010] [Accepted: 08/08/2010] [Indexed: 11/26/2022]
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Sameer AS, Shah ZA, Syeed N, Banday MZ, Bashir SM, Bhat BA, Siddiqi MA. TP53 Pro47Ser and Arg72Pro polymorphisms and colorectal cancer predisposition in an ethnic Kashmiri population. GENETICS AND MOLECULAR RESEARCH 2010; 9:651-60. [PMID: 20449797 DOI: 10.4238/vol9-2gmr751] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two TP53 gene polymorphisms at codon 47 (TP53 Pro47Ser) and at codon 72 (TP53 Arg72Pro) have been associated with susceptibility to various cancers. We carried out a case-control study and examined the genotype distribution of TP53 Pro47Ser and Arg72Pro single nucleotide polymorphisms (SNPs), using a PCR-RFLP approach, to determine if these two SNPs are risk factors for colorectal cancer (CRC) development and to look for a possible correlation of these two SNPs with clinicopathological variables of CRC. We investigated the genotype distribution of these SNPs in 86 CRC cases in comparison with 160 healthy subjects in an ethnic Kashmiri population. TP53 Arg72Pro SNP genotype frequencies differed significantly (P = 0.000001) between the groups; the frequency of the Pro/Pro mutant was almost 20% in the general population. We also found significant association of the Pro/Pro mutant with tumor location, nodal status/higher tumor grade and bleeding per rectum/constipation. We conclude that Arg72Pro SNP is associated with susceptibility to developing CRC in this ethnic Kashmiri population.
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Affiliation(s)
- A S Sameer
- Department of Immunology and Molecular Medicine Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Kashmir, India
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Systematic review and meta-analysis of the association between P53 codon 72 polymorphism and colorectal cancer. Eur J Surg Oncol 2010; 36:431-8. [PMID: 20363586 DOI: 10.1016/j.ejso.2010.03.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Revised: 01/20/2010] [Accepted: 03/22/2010] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND A number of studies has evaluated the association between P53 codon 72 polymorphism and colorectal cancer. However, results were inconsistent. To clarify the role of this polymorphism in colorectal cancer, we conducted a meta-analysis on this topic. METHODS Two authors independently searched the PubMed and EMBASE database from 1966 to January 2010 for studies regarding the association of P53 codon 72 polymorphism with colorectal cancer. Summary odds ratios with their corresponding 95% confidence intervals were calculated by using random-effects model. RESULTS The combined results showed that P53 codon 72 variant genotypes were not associated with colorectal cancer risk when compared to Arg/Arg genotype (Pro/Pro: OR = 1.02, 95% CI = 0.80-1.29; Arg/Pro: OR = 1.00, 95% CI = 0.86-1.16; Pro allele: OR = 1.00, 95% CI = 0.86-1.17). When stratifying for study population, design and cancer location, no statistically significant results were observed either. CONCLUSION Our data indicate that the P53 codon 72 polymorphism may be not associated with colorectal cancer risk.
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Manne U, Shanmugam C, Katkoori VR, Bumpers HL, Grizzle WE. Development and progression of colorectal neoplasia. Cancer Biomark 2010; 9:235-65. [PMID: 22112479 PMCID: PMC3445039 DOI: 10.3233/cbm-2011-0160] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A variety of genetic and molecular alterations underlie the development and progression of colorectal neoplasia (CRN). Most of these cancers arise sporadically due to multiple somatic mutations and genetic instability. Genetic instability includes chromosomal instability (CIN) and microsatellite instability (MSI), which is observed in most hereditary non-polyposis colon cancers (HNPCCs) and accounts for a small proportion of sporadic CRN. Although many biomarkers have been used in the diagnosis and prediction of the clinical outcomes of CRNs, no single marker has established value. New markers and genes associated with the development and progression of CRNs are being discovered at an accelerated rate. CRN is a heterogeneous disease, especially with respect to the anatomic location of the tumor, race/ethnicity differences, and genetic and dietary interactions that influence its development and progression and act as confounders. Hence, efforts related to biomarker discovery should focus on identification of individual differences based on tumor stage, tumor anatomic location, and race/ethnicity; on the discovery of molecules (genes, mRNA transcripts, and proteins) relevant to these differences; and on development of therapeutic approaches to target these molecules in developing personalized medicine. Such strategies have the potential of reducing the personal and socio-economic burden of CRNs. Here, we systematically review molecular and other pathologic features as they relate to the development, early detection, diagnosis, prognosis, progression, and prevention of CRNs, especially colorectal cancers (CRCs).
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Affiliation(s)
- Upender Manne
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA.
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Lung FW, Shu BC, Kao WT, Chen CN, Ku YC, Tzeng DS. Association of DRD4 uVNTR and TP53 codon 72 polymorphisms with schizophrenia: a case-control study. BMC MEDICAL GENETICS 2009; 10:147. [PMID: 20040103 PMCID: PMC2808306 DOI: 10.1186/1471-2350-10-147] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Accepted: 12/29/2009] [Indexed: 02/02/2023]
Abstract
Background The tumour supressor gene TP53 is thought to be involved in neural apoptosis. The polymorphism at codon 72 in TP53 and the long form variants of the upstream variable number of tandem repeats (uVNTR) polymorphism in the dopamine D4 receptor (DRD4) gene are reported to confer susceptibility to schizophrenia. Methods We recruited 934 patients with schizophrenia and 433 healthy individuals, and genotyped the locus of the TP53 codon 72 and DRD4 uVNTR polymorphisms by combining the polymerase chain reaction-restriction fragment length polymorphism method (PCR-RFLP) with direct sequencing. Results No significant differences were found in the frequency of the genotype of the TP53 codon72 polymorphism between patients with schizophrenia and their controls. However, the long form alleles (≥ 5 repeats) of the DRD4 uVNTR polymorphism were more frequent in patients with schizophrenia than in controls (p = 0.001). Hence, this class of alleles might be a risk factor for enhanced vulnerability to schizophrenia (odds ratio = 3.189, 95% confidence interval = 1.535-6.622). In the logistic regression analysis, the long form variants of the DRD4 polymorphism did predict schizophrenia after the contributions of the age and gender of the subjects were included (p = 0.036, OR = 2.319), but the CC and GG genotypes of the codon 72 polymorphism of TP53 did not. Conclusions The long form variants of the uVNTR polymorphism in DRD4 were associated with schizophrenia, in a manner that was independent of the TP53 codon 72 polymorphism. In addition, given that the genetic effect of the TP53 codon 72 polymorphism on the risk of developing schizophrenia was very small, this polymorphism is unlikely to be associated with schizophrenia. The roles that other single nucleotide polymorphisms (SNPs) in the TP53 gene or in other apoptosis-related genes play in the synaptic dysfunction involved in the pathogenesis of schizophrenia should be investigated.
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Affiliation(s)
- For-Wey Lung
- Department of Psychiatry, Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan.
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Katkoori VR, Jia X, Shanmugam C, Wan W, Meleth S, Bumpers H, Grizzle WE, Manne U. Prognostic significance of p53 codon 72 polymorphism differs with race in colorectal adenocarcinoma. Clin Cancer Res 2009; 15:2406-16. [PMID: 19339276 DOI: 10.1158/1078-0432.ccr-08-1719] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE Several studies have examined the prognostic value of the codon 72 polymorphism of the p53 gene in colorectal adenocarcinoma, but none have addressed patient race/ethnicity. Therefore, this study assessed the prognostic value of this polymorphism in African American and Caucasian colorectal adenocarcinoma patients separately. EXPERIMENTAL DESIGN Colorectal adenocarcinomas from 137 African Americans and 236 non-Hispanic Caucasians were assessed for p53 mutations and genotyped for the codon 72 polymorphism. The phenotypes were correlated with p53 mutational status, clinicopathologic features, and patient survival using the chi(2) test and Kaplan-Meier and Cox regression models. RESULTS The incidence of p53 mutations was similar in African American and Caucasian patients (50% versus 54%, respectively); however, the homozygous Pro72 allele frequency was higher in African Americans (17%) as compared with Caucasians (7%). In contrast, the homozygous Arg72 allele frequency was higher in Caucasians (36%) than in African Americans (19%). In African Americans but not Caucasians, the Pro/Pro phenotype significantly correlated with a higher incidence of missense p53 mutations and with nodal metastasis. African Americans, but not Caucasians, with the Pro/Pro phenotype had significantly higher mortality (log-rank P = 0.005 versus. P = 0.886) and risk of death due to colorectal adenocarcinoma (hazard ratio, 2.15; 95% confidence interval, 1.02-4.53 versus hazard ratio, 1.60; 95% confidence interval, 0.69-3.18) than those with the phenotype Arg/Arg or Arg/Pro. CONCLUSIONS The higher frequency of the Pro/Pro phenotype of p53 in African American patients with colorectal adenocarcinoma is associated with an increased incidence of p53 mutations, with advanced tumor stage, and with short survival.
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Affiliation(s)
- Venkat R Katkoori
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama 35294-7331, USA
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Sousa H, Santos AM, Catarino R, Pinto D, Vasconcelos A, Lopes C, Breda E, Medeiros R. Linkage of TP53 codon 72 pro/pro genotype as predictive factor for nasopharyngeal carcinoma development. Eur J Cancer Prev 2007; 15:362-6. [PMID: 16835507 DOI: 10.1097/00008469-200608000-00010] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Genetic predisposition has been suggested as a cofactor for cancer aetiology and a polymorphism in TP53 codon 72 has been associated as a susceptibility factor for several cancers. Nasopharyngeal carcinoma is a rare neoplasia in western civilizations and genetic predisposition might play an important role in its development. We evaluated the linkage of the polymorphic variants (Arg/Pro) on TP53 codon 72 with nasopharyngeal cancer development in a case-control study with 392 individuals from a northern Portuguese population, including 107 patients with nasopharyngeal carcinoma and 285 healthy controls. This study revealed a three-fold risk for carriers of Pro/Pro genotype either against carriers of Arg/Arg (OR=2.62; 95% CI=1.10-6.30; P=0.016) or total Arg carriers (OR=2.67; 95% CI=1.21-5.90; P=0.012). Moreover, step-wise logistic regression analysis identified Pro/Pro genotype (OR=3.1; 95% CI=1.3-7.3; P=0.009), age >49 at diagnosis (OR=2.5; 95% CI=1.6-4.0; P<0.001) and male gender (OR=2.7; 95% CI=1.6-4.4; P<0.001) as predictive factors for the development of nasopharyngeal carcinoma. These results confirm the data from Asiatic populations suggesting that Pro/Pro genotype represents a stable risk factor for nasopharyngeal carcinoma development in Portugal and that TP53 codon 72 polymorphism can contribute as a genetic susceptibility marker, providing additional information to improve the knowledge about nasopharyngeal carcinoma aetiology.
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Affiliation(s)
- Hugo Sousa
- Molecular Oncology Unit, Portuguese Institute of Oncology - Oporto, Porto, Portugal
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Koushik A, Tranah GJ, Ma J, Stampfer MJ, Sesso HD, Fuchs CS, Giovannucci EL, Hunter DJ. p53 Arg72Pro polymorphism and risk of colorectal adenoma and cancer. Int J Cancer 2006; 119:1863-8. [PMID: 16721787 DOI: 10.1002/ijc.22057] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A single nucleotide polymorphism (SNP) at codon 72 of the p53 gene (Arg72Pro) alters the p53 protein structure and affects its activity. We investigated this SNP in relation to colorectal adenoma and cancer among men and women from case-control studies nested within the Nurses' Health Study, the Health Professionals Follow-up Study and the Physicians' Health Study. Among 856 colorectal adenoma cases and 1,184 controls, we observed a modest association with p53 Arg72Pro genotype (multivariate odds ratio (OR) = 1.25, 95% confidence interval (CI) = 1.04-1.50 for Arg/Pro and Pro/Pro vs. Arg/Arg). This association did not vary by colorectal site or by sex. Among 442 colorectal cancer cases and 904 controls, we observed no significant overall association between p53 Arg72Pro genotype and colorectal cancer (multivariate OR = 1.14, 95% CI = 0.90-1.45). However, when colorectal site and sex was accounted for, the Pro carrier genotypes compared to Arg/Arg were associated with an increased risk of proximal colon cancers in women (multivariate OR = 2.59, 95% CI = 1.49-4.52) though not with distal colon or rectal cancers, while among men the same genotypes were associated with an increased risk of distal colon cancers (multivariate OR = 2.09, 95% CI = 1.28-3.40) but not proximal colon or rectal cancers. Our results suggest that Arg72Pro may play a role in the early stages of colorectal neoplasia and possibly in progression to invasive disease, depending on site and sex.
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Affiliation(s)
- Anita Koushik
- Department of Nutrition, Harvard School of Public Health, Boston, MA 02115, USA.
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Pérez LO, Abba MC, Dulout FN, Golijow CD. Evaluation of p53 codon 72 polymorphism in adenocarcinomas of the colon and rectum in La Plata, Argentina. World J Gastroenterol 2006; 12:1426-9. [PMID: 16552814 PMCID: PMC4124323 DOI: 10.3748/wjg.v12.i9.1426] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the potential association between p53 codon 72 polymorphism and sporadic colorectal adenocarcinoma development, and human papillomavirus (HPV) infection.
METHODS: One-hundred and nine controls and 53 patients with colon cancer from the city of La Plata, Argentina were analyzed. p53 codon 72 genotypes and HPV infection were identified using allele-specific polymerase chain reaction and nested polymerase chain reaction, respectively.
RESULTS: The differences in the distribution of p53 codon 72 polymorphism between the cases and controls were statistically significant. The arginine allele had a prevalence of 0.65 in controls and 0.77 in cases. The corresponding odds ratio for the homozygous arginine genotype was 2.08 (95% CI, 1.06-4.05; P<0.05). Lack of association was found between p53 polymorphism and HPV infection in the set of adenocarcinomas.
CONCLUSION: The findings of the present study indicate that p53 codon 72 arginine homozygous genotype may represent a genetic predisposing factor for colon cancer development. However, further studies are needed in order to elucidate the role of p53 codon 72 polymorphism in colorectal cancer.
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Affiliation(s)
- Luis Orlando Pérez
- Centro de Investigaciones en Genética Básica y Aplicada, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, Calle 60 y 118 S/N, B 1900 AVW, La Plata, Argentina.
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Sotamaa K, Liyanarachchi S, Mecklin JP, Järvinen H, Aaltonen LA, Peltomäki P, de la Chapelle A. p53 codon 72 and MDM2 SNP309 polymorphisms and age of colorectal cancer onset in Lynch syndrome. Clin Cancer Res 2006; 11:6840-4. [PMID: 16203772 DOI: 10.1158/1078-0432.ccr-05-1139] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE The Arg/Pro polymorphism in codon 72 of p53 was recently associated with age of onset of colorectal cancer in Lynch syndrome. A novel polymorphism in the promoter region of MDM2 was associated with age of cancer onset in Li-Fraumeni syndrome. We studied the influence of both polymorphisms on age of onset in Lynch syndrome and of the p53 polymorphism also in sporadic colorectal cancer. EXPERIMENTAL DESIGN We genotyped p53 codon 72 in 193 individuals with Lynch syndrome mutations, 93 patients with sporadic microsatellite unstable colorectal cancer, and 93 patients with sporadic microsatellite stable colorectal cancer from Finland and 323 Finnish controls. We genotyped 30 colorectal cancer patients with Lynch syndrome mutations from Ohio and 118 U.S. controls. We genotyped SNP309 of MDM2 in the Lynch syndrome groups. We used chi2 test, Kaplan-Meier statistics, and Cox regression model to analyze the data. RESULTS Allele frequencies of both polymorphisms were similar in subjects and controls from both populations and showed Hardy-Weinberg equilibrium. Neither polymorphism was associated with age of colorectal cancer onset in any of the subject groups. CONCLUSIONS This study failed to show any role of the p53 polymorphism on age of colorectal cancer onset in Lynch syndrome and sporadic colorectal cancer. The polymorphism in the MDM2 promoter had no affect on age of onset in Lynch syndrome. Accurate information about age of onset is important in clinical practice, especially in high-risk conditions. As association studies are vulnerable to biologically insignificant variation, both positive and negative findings need to be reported to enable unbiased assessment of the significance of putative risk variants.
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Affiliation(s)
- Kaisa Sotamaa
- Human Cancer Genetics Program, Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio 43210, USA
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Lin HY, Huang CH, Wu WJ, Chou YH, Fan PL, Lung FW. Mutation of the p53 tumor suppressor gene in transitional cell carcinoma of the urinary tract in Taiwan. Kaohsiung J Med Sci 2005; 21:57-64. [PMID: 15825690 DOI: 10.1016/s1607-551x(09)70278-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Early detection of a mutated p53 gene is thought to provide useful information in a wide range of human tumors. The aim of this study was to identify the role of the p53 gene in transitional cell carcinoma of the urinary tract. From March 1992 to July 2003, 75 patients (54 men and 21 women) with a mean age of 66.85 years and pathologically diagnosed transitional cell carcinoma were enrolled in this study. Fifty-eight patients had bladder cancer, eight had ureteral cancer, and nine had renal-pelvic cancer. Rapid screening for mutation of the p53 gene was performed using polymerase chain reaction (PCR), single-strand conformation polymorphism (SSCP), and sequencing analysis. Primer sets were designed to amplify fragments within exons 4, 5, 6, 7, and 8 of the p53 gene. Pathology classified 37 tumors as low grade and 38 as high grade. Tumor stage was pT1 or less in 29 patients and at least pT2 in 46 patients. Of the 75 patients in this study, 47 (62.7%) had a p53 mutation. Of the patients with a p53 mutation, 33 (70.2%) had invasive tumors. Invasive tumors were associated with p53 mutation (p < 0.05). Noted in 20 patients (26.7%), exon 4 was the most common site of the mutation. Of the patients with exon 4 mutations, 15 (75%) had invasive tumors and nine (45%) had high-grade tumors. Additionally, among the 20 patients with a common polymorphism at codon 72, 16 (80%) had invasive tumors and 14 (70%) had high-grade tumors. In this study, 62.7% of patients with transitional cell carcinoma had a p53 mutation, suggesting that the p53 gene mutation may be used as a marker of transitional cell carcinoma. Invasive tumors are more likely to have a p53 gene mutation. A simple analysis of the p53 gene using PCR/SSCP is suitable for screening for p53 abnormalities in transitional cell carcinoma. The relationship between cancer risk and the codon 72 polymorphism of exon 4 needs further investigation.
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Affiliation(s)
- Hung-Yu Lin
- Department of Urology, E-Da Hospital, Kaohsiung, Taiwan
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