1
|
Pan W, Cheng H, Zhang J, Yang Z, Lin M. The FGFR2 Variant rs13387042 is Associated With Breast Cancer Risk: A Meta-Analysis and Systematic Review. Clin Breast Cancer 2024:S1526-8209(24)00082-X. [PMID: 38641470 DOI: 10.1016/j.clbc.2024.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/10/2024] [Accepted: 03/11/2024] [Indexed: 04/21/2024]
Abstract
OBJECTIVE The association of FGFR2-rs13387042 polymorphism with breast cancer (BC) susceptibility in women remains inconclusive due to varying reports. In this study, we conducted a meta-analysis to explore the relationship between FGFR2-rs13387042 polymorphism and susceptibility to BC. METHODS Relevant literature were acquired through searches across multiple databases. Odds ratio (OR) values were pooled to assess the risk of BC for different alleles and genotypes. The heterogeneity among the included literature was evaluated. Sensitivity analysis was used to verify the stability of the results. Egger's linear regression test was used to assess the significance of publication bias of the included literature. RESULTS A total of 17 publications were included, encompassing 122,607 cases and 175,966 controls. There was significantly increased risk of BC for allele A compared with G (OR = 1.15, 95% CI = 1.14-1.67, P < .001), genotype AA compared with GG (OR = 1.34, 95% CI = 1.29-1.38, P < .001), and genotype GA compared with GG (OR = 1.19, 95% CI = 1.12-1.26, P < .001). Both Egger's test and funnel plot indicated the presence of publication bias. After adjusting potential publication bias by the trim-and-fill method, the comparison of allele A versus G (OR = 1.15, 95% CI = 1.13-1.17, P < .001), genotype AA versus GG (OR = 1.32, 95% CI = 1.28-1.37, P < .001), and genotype GA versus GG (OR = 1.15, 95% CI = 1.09-1.22, P < .001) remained statistically significant. In various subgroups, the allele A showed significantly higher risk of BC upon allele G in estrogen receptor (ER) positive BC, ER negative BC, progesterone receptor (PR) positive BC, PR negative BC, triple-negative BC, pathological grade I BC, grade II BC, and grade III breast cancer. The subsequent sensitivity analysis suggested the above findings stable and reliable. CONCLUSION In this study, we found that the allele A of the FGFR2-rs13387042 polymorphism is associated with increased risk of developing breast cancer. This study underscores its potential as a genetic marker for personalized risk assessment and targeted interventions.
Collapse
Affiliation(s)
- Weining Pan
- Life Sciences, Warwick University, Coventry, United Kingdom
| | - Hui Cheng
- Department of Pathology, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Juan Zhang
- Department of Thoracic Surgery, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Zijie Yang
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou, China; Department of Thoracic Surgery, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Mengbo Lin
- Department of Surgical Oncology, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China; Shengli Clinical Medical College, Fujian Medical University, Fuzhou, China.
| |
Collapse
|
2
|
Jiang H, Yan B, Meng Z, Zhang L, Lei H, Luo J. The MDM2 Single-Nucleotide Polymorphism T309G Is Associated With the Development of Epimacular Membranes. Front Cell Dev Biol 2022; 10:841660. [PMID: 35359434 PMCID: PMC8963840 DOI: 10.3389/fcell.2022.841660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/15/2022] [Indexed: 11/13/2022] Open
Abstract
Purpose: To investigate the role of the mouse double minute 2 (MDM2) gene single-nucleotide polymorphism (SNP) T309G in the development of epimacular membranes (EMMs) by analyzing the genotype distribution and consistency of the polymorphism in paired membrane-blood samples. Methods: This was a cross–sectional genetic association study of patients with proliferative vitreoretinopathy (PVR) or EMMs. PVR membranes (PVRMs), internal limiting membranes (ILMs) (PVR-ILMs) and blood samples (PVR-blood) from patients with PVR, and EMMs, EMM-ILMs and EMM-blood from patients with EMMs were collected. The genotype of all samples was determined by Sanger sequencing. Sex composition, mean age, the genotype distribution of MDM2 T309G, the allelic frequency of the MDM2 SNP309 G allele (% G) and the somatic mutation rate at the MDM2 T309G locus (% M) were analyzed and compared. The PVR and healthy Chinese donor groups were used as controls for different comparisons. Results: The EMM group of 62 patients was older than the PVR group of 61 patients by an average of 8.87 years (p < 0.0001), but the two groups were statistically similar in the sex composition (p = 0.1754). Importantly, G allele carriers were at a higher risk of developing EMMs than non-G allele carriers (p = 0.0479; OR = 2.047). Moreover, EMM-blood exhibited a significantly higher % G than blood samples from healthy Chinese donors (EMM-blood: 56.78%, donors: 45.61%; p = 0.0256; OR = 1.567). Regarding membrane-blood consistency, % M was significantly different between PVRMs and EMMs (PVRMs: 2.63%, EMMs: 21.57%; p = 0.0097; OR = 10.18) but not between different types of ILMs (PVR-ILMs: 18.18%, EMM-ILMs: 29.17%; p = 0.6855). Furthermore, EMMs (p = 0.0053; OR = 8.250) and EMM-ILMs (p = 0.0233; OR = 14.40) from patients with preoperative macular holes were more predisposed toward somatic mutations at the MDM2 T309G locus than those from patients without preoperative macular holes. Conclusions:MDM2 T309G is associated with the development of EMMs. Herein, the MDM2 SNP309 G allele is first reported as an associated factor of EMMs in a Chinese population. In addition, EMMs and ILMs are genetically unstable at the MDM2 T309G locus, especially when complicated with preoperative macular holes.
Collapse
Affiliation(s)
- Heng Jiang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Bin Yan
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Zhishang Meng
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Lusi Zhang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hetian Lei
- Shenzhen Eye Institute, Shenzhen Eye Hospital, Jinan University, Shenzhen, China
- *Correspondence: Hetian Lei, , Jing Luo,
| | - Jing Luo
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Hetian Lei, , Jing Luo,
| |
Collapse
|
3
|
The roles of mouse double minute 2 (MDM2) oncoprotein in ocular diseases: A review. Exp Eye Res 2022; 217:108910. [PMID: 34998788 DOI: 10.1016/j.exer.2021.108910] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 12/03/2021] [Accepted: 12/21/2021] [Indexed: 12/19/2022]
Abstract
Mouse double minute 2 (MDM2), an E3 ubiquitin ligase and the primary negative regulator of the tumor suppressor p53, cooperates with its structural homolog MDM4/MDMX to control intracellular p53 level. In turn, overexpression of p53 upregulates and forms an autoregulatory feedback loop with MDM2. The MDM2-p53 axis plays a pivotal role in modulating cell cycle control and apoptosis. MDM2 itself is regulated by the PI3K-AKT and RB-E2F-ARF pathways. While amplification of the MDM2 gene or overexpression of MDM2 (due to MDM2 SNP T309G, for instance) is associated with various malignancies, numerous studies have shown that MDM2/p53 alterations may also play a part in the pathogenetic process of certain ocular disorders (Fig. 1). These include cancers (retinoblastoma, uveal melanoma), fibrocellular proliferative diseases (proliferative vitreoretinopathy, pterygium), neovascular diseases, degenerative diseases (cataract, primary open-angle glaucoma, age-related macular degeneration) and infectious/inflammatory diseases (trachoma, uveitis). In addition, MDM2 is implicated in retinogenesis and regeneration after optic nerve injury. Anti-MDM2 therapy has shown potential as a novel approach to treating these diseases. Despite major safety concerns, there are high expectations for the clinical value of reformative MDM2 inhibitors. This review summarizes important findings about the role of MDM2 in ocular pathologies and provides an overview of recent advances in treating these diseases with anti-MDM2 therapies.
Collapse
|
4
|
Bartpho TS, Wattanawongdon W, Tongtawee T. The mouse double minute 2 polymorphism is associated with both decreased p53 expression and poor clinicopathological outcomes of gastric cancer. J Cancer Res Ther 2021; 17:1438-1445. [PMID: 34916375 DOI: 10.4103/jcrt.jcrt_89_19] [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: 11/04/2022]
Abstract
This study aimed to determine the mouse double minute 2 (MDM2) SNP309 polymorphism and to evaluate MDM2 and p53 expression and the association of MDM2 positivity in gastric cancer and clinicopathological outcomes. A total of 400 patients with chronic gastritis, precancerous lesions, and gastric cancer were used to identify the MDM2 SNP309 polymorphism by using the Taq Man SNP Genotyping assay. Immunohistochemistry was performed to evaluate MDM2 and p53 expression. The associations of polymorphisms, protein expression, clinicopathological outcomes, and gastric cancer risk were calculated by multivariate Cox proportional hazards regression model analysis and expressed by odds ratios (ORs) and 95% confidence intervals (CIs). The MDM2 SNP309 G/G homozygous polymorphism was significantly associated with expressed MDM2 in gastric cancer (OR = 1.57, 95% CI = 1.39-2.03, P = 0.039). Moreover, in gastric cancer, p53 was significantly decreased compared to MDM2 (P = 0.007). However, MDM2 and p53 expression were not significantly different among genotypes, and the G/G genotype can result in the altered protein expression of p53 in gastric cancer. Clinicopathological outcome was significantly associated with MDM2 expression, including tumor location in the upper gastric region (OR = 1.48, 95% CI = 1.25-3.54, P = 0.037), undifferentiated type (OR = 2.47, 95% CI = 1.38-4.14, P = 0.016), presence of lymphatic invasion (OR = 1.96, 95% CI = 1.22-3.19, P = 0.014), and unresectable tumor (OR = 3.39, 95% CI = 1.61-4.94, P = 0.017). Our study indicated associations of the MDM2 SNP309 G/G homozygous polymorphism, MDM2 and p53 expression. Therefore, G/G-associated MDM2 revealed that P53 expression was decreased in gastric cancer and poor clinicopathological outcomes. Understanding the genetic polymorphisms and expression of MDM2 may help explain gastric cancer risk.
Collapse
Affiliation(s)
- Theeraya Simawaranon Bartpho
- Translational Medicine Program, School of Surgery, Institute of Medicine, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Wareeporn Wattanawongdon
- Translational Medicine Program, School of Surgery, Institute of Medicine, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Taweesak Tongtawee
- Translational Medicine Program, School of Surgery, Institute of Medicine, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| |
Collapse
|
5
|
Timóteo M, Tavares A, Cruz S, Campos C, Medeiros R, Sousa H. Association of Murine Double Minute 2 polymorphisms with gastric cancer: A systematic review with meta-analysis. Biomed Rep 2021; 15:69. [PMID: 34257965 DOI: 10.3892/br.2021.1445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/20/2021] [Indexed: 01/09/2023] Open
Abstract
Gastric cancer (GC) is the 5th most common type of cancer, with the 3rd highest mortality rate worldwide in both sexes. Murine double minute 2 (MDM2) protein is the major negative regulator of p53, and genetic polymorphisms in this gene have shown to be associated with several types of cancer. In the present study, a literature search was performed using PubMed and Scopus with the following key word combinations 'gastric cancer AND polymorphism AND MDM2'. Studies were carefully revised according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines to identify eligible studies that matched the inclusion criteria. Statistical analysis was performed to assess the association between the different genetic polymorphisms and GC risk, by calculating the odds ratios (OR) and the confidence intervals (CI), with a 5% level of significance. A total of 11 manuscripts studied MDM2 polymorphisms in GC: rs937283 (n=1), rs3730485 (n=1) and rs2279744 (n=9). Both the rs937283 and rs3730485 reports showed an association with GC; however, there was only one study on each of these polymorphisms in the literature. A meta-analysis was performed for the rs2279744 polymorphism, of which studies showed a positive association between the G allele and risk of GC, either in the dominant model (OR=1.46; 95% CI 1.21-1.75; P<0.001) or recessive model (OR 1.65; 95% CI 1.45-1.87; P<0.001). In conclusion, genetic polymorphisms in MDM2 seemed to be associated with an increased risk of GC development, nevertheless, the number of studies were relatively low and the studied populations were primarily Chinese. The present meta-analysis emphasizes the need for additional studies in other populations to corroborate the association of these polymorphisms with GC.
Collapse
Affiliation(s)
- Mafalda Timóteo
- Molecular Oncology and Viral Pathology Group (CI-IPOP), Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal
| | - Ana Tavares
- Molecular Oncology and Viral Pathology Group (CI-IPOP), Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal.,Pathology Department, Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal
| | - Sara Cruz
- Molecular Oncology and Viral Pathology Group (CI-IPOP), Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal
| | - Carla Campos
- Molecular Oncology and Viral Pathology Group (CI-IPOP), Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal.,Microbiology Service, Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal
| | - Rui Medeiros
- Molecular Oncology and Viral Pathology Group (CI-IPOP), Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal.,Virology Service, Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal.,Research Department, Portuguese League Against Cancer (Liga Portuguesa Contra o Cancro-Núcleo Regional do Norte), 4200-172 Porto, Portugal
| | - Hugo Sousa
- Molecular Oncology and Viral Pathology Group (CI-IPOP), Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal.,Virology Service, Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal
| |
Collapse
|
6
|
Isoforms of the p53 Family and Gastric Cancer: A Ménage à Trois for an Unfinished Affair. Cancers (Basel) 2021; 13:cancers13040916. [PMID: 33671606 PMCID: PMC7926742 DOI: 10.3390/cancers13040916] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/06/2021] [Accepted: 02/17/2021] [Indexed: 12/17/2022] Open
Abstract
Simple Summary The p53 family is a complex family of transcription factors with different cellular functions that are involved in several physiological processes. A massive amount of data has been accumulated on their critical role in the tumorigenesis and the aggressiveness of cancers of different origins. If common features are observed, there are numerous specificities that may reflect particularities of the tissues from which the cancers originated. In this regard, gastric cancer tumorigenesis is rather remarkable, as it is induced by bacterial and viral infections, various chemical carcinogens, and familial genetic alterations, which provide an example of the variety of molecular mechanisms responsible for cell transformation and how they impact the p53 family. This review summarizes the knowledge gathered from over 40 years of research on the role of the p53 family in gastric cancer, which still displays one of the most elevated mortality rates amongst all types of cancers. Abstract Gastric cancer is one of the most aggressive cancers, with a median survival of 12 months. This illustrates its complexity and the lack of therapeutic options, such as personalized therapy, because predictive markers do not exist. Thus, gastric cancer remains mostly treated with cytotoxic chemotherapies. In addition, less than 20% of patients respond to immunotherapy. TP53 mutations are particularly frequent in gastric cancer (±50% and up to 70% in metastatic) and are considered an early event in the tumorigenic process. Alterations in the expression of other members of the p53 family, i.e., p63 and p73, have also been described. In this context, the role of the members of the p53 family and their isoforms have been investigated over the years, resulting in conflicting data. For instance, whether mutations of TP53 or the dysregulation of its homologs may represent biomarkers for aggressivity or response to therapy still remains a matter of debate. This uncertainty illustrates the lack of information on the molecular pathways involving the p53 family in gastric cancer. In this review, we summarize and discuss the most relevant molecular and clinical data on the role of the p53 family in gastric cancer and enumerate potential therapeutic innovative strategies.
Collapse
|
7
|
Wang H, Lu Y, Wang M, Wu Y, Wang X, Li Y. Roles of E3 ubiquitin ligases in gastric cancer carcinogenesis and their effects on cisplatin resistance. J Mol Med (Berl) 2021; 99:193-212. [PMID: 33392633 DOI: 10.1007/s00109-020-02015-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 11/15/2020] [Accepted: 11/20/2020] [Indexed: 12/28/2022]
Abstract
Although gastric cancer (GC) is one of the most common cancers with high incidence and mortality rates, its pathogenesis is still not elucidated. GC carcinogenesis is complicated and involved in the activation of oncoproteins and inactivation of tumor suppressors. The ubiquitin-proteasome system (UPS) is crucial for protein degradation and regulation of physiological and pathological processes. E3 ubiquitin ligases are pivotal enzymes in UPS, containing various subfamily proteins. Previous studies report that some E3 ligases, including SKP2, CUL1, and MDM2, act as oncoproteins in GC carcinogenesis. On the other hand, FBXW7, FBXL5, FBXO31, RNF43, and RNF180 exert as tumor suppressors in GC carcinogenesis. Moreover, E3 ligases modulate cell growth, cell apoptosis, and cell cycle; thus, it is complicated to confer cisplatin resistance/sensitivity in GC cells. The intrinsic and acquired cisplatin resistance limits its clinical application against GC. In this review, we explore oncogenic and tumor suppressive roles of E3 ligases in GC carcinogenesis and focus on the effects of E3 ligases on cisplatin resistance in GC cells, which will provide novel therapeutic targets for GC therapy, especially for cisplatin-resistant patients.
Collapse
Affiliation(s)
- Huizhen Wang
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Yida Lu
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Mingliang Wang
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Youliang Wu
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Xiaodong Wang
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Yongxiang Li
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China.
| |
Collapse
|
8
|
Borbora D, Dutta HK, Devi KR, Mahanta J, Medhi P, Narain K. Long telomeres cooperate with p53, MDM2, and p21 polymorphisms to raise pediatric solid tumor risk. Pediatr Int 2019; 61:759-767. [PMID: 31211452 DOI: 10.1111/ped.13915] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 06/05/2019] [Accepted: 06/14/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND While leukocyte telomere length has been linked with altered risk in adult cancer, limited information is available on its association with risk in pediatric solid tumors. We investigated the association of telomeric alterations with risk of pediatric solid tumors. We also investigated whether altered telomeres cooperated with the TP53 rs1042522, MDM2 rs2279744 and CDKN1A (p21cip1 ) rs1059234 single-nucleotide polymorphisms to modify cancer risk. METHODS A total of 101 tumor patients and 202 controls were recruited for this age- and gender-matched case-control study. Relative telomere length (RTL) was determined in peripheral blood leukocytes using quantitative real-time polymerase chain reaction (PCR), and the polymorphisms were genotyped using PCR-restriction fragment length polymorphism. RESULTS Using median RTL in the healthy controls as a cut-off, children with longer telomeres were at an increased risk of developing a solid tumor (OR, 2.70; P < 0.01). When participants were categorized according to control RTL quartiles, a significant dose-response relationship was observed (χ2 = 10.95; P < 0.001). The risk for tumors increased nearly threefold (P = 0.001) for the triple interaction RTL × TP53 rs1042522 × p21cip1 rs1059234 compared with the maximum effect of any single factor, although the interaction effect was less than additive. The MDM2 rs2279744 GG genotype reduced pediatric solid tumor risk significantly (OR, 0.51). CONCLUSION Combined analysis of telomeres and genetic polymorphisms in the TP53 pathway can provide important clues to understanding pediatric solid tumor etiology.
Collapse
Affiliation(s)
- Debasish Borbora
- Regional Medical Research Centre, NE Region (ICMR), Dibrugarh, Assam, India.,Centre for Biotechnology and Bioinformatics, Dibrugarh University, Dibrugarh, Assam, India.,Department of Biotechnology, Gauhati University, Guwahati, Assam, India
| | - Hemonta K Dutta
- Department of Pediatric surgery, Assam Medical College and Hospital, Dibrugarh, Assam, India
| | - Kangjam Rekha Devi
- Regional Medical Research Centre, NE Region (ICMR), Dibrugarh, Assam, India
| | - Jagadish Mahanta
- Regional Medical Research Centre, NE Region (ICMR), Dibrugarh, Assam, India
| | - Pronita Medhi
- Department of Pathology, Assam Medical College and Hospital, Dibrugarh, Assam, India
| | - Kanwar Narain
- Regional Medical Research Centre, NE Region (ICMR), Dibrugarh, Assam, India
| |
Collapse
|
9
|
Song J, Ma SJ, Luo JH, Liu H, Li L, Zhang ZG, Chen LS, Zhou RX. Downregulation of AKT and MDM2, Melatonin Induces Apoptosis in AGS and MGC803 Cells. Anat Rec (Hoboken) 2019; 302:1544-1551. [PMID: 30809951 DOI: 10.1002/ar.24101] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 10/19/2018] [Accepted: 10/26/2018] [Indexed: 01/04/2023]
Abstract
Melatonin, a neurohormone secreted by the pineal gland, has a variety of biological functions, such as circadian rhythms regulation, anti-oxidative activity, immunomodulatory effects, and anittumor, etc. At present, its antitumor effect has attracted people's attention due to its extensive tissue distribution, good tissue compatibility, and low toxic and side effects. In the gastrointestinal tract, there is high level of melatonin and many studies showed melatonin has effects of anti-gastric cancer. In this experiment, human gastric cancer cell lines AGS and MGC803 were used to investigate the intracellular molecular mechanism of melatonin against gastric cancer. After AGS and MGC803 have been treated with melatonin, the changes of cell morphology and cellular structure were observed under electron microscope. Flow cytometer and apoptosis detection kits were used to analyze the effect of apoptosis on AGS and MGC803. The alterations of apoptosis-related proteins Caspase 9, Caspase 3, and upstream regulators AKT, MDM2 including expression, phosphorylation, and activation were detected to analyze the intracellular molecular mechanism of melatonin inhibiting gastric cancer. In AGS and MGC803 cells with melatonin exposure, cleaved Caspase 9 was upregulated and Caspase 3 was activated; moreover, MDM2 and AKT expression and phosphorylation were downregulated. Melatonin promoted apoptosis of AGS and MGC803 cells by the downregulation of AKT and MDM2. Anat Rec, 302:1544-1551, 2019. © 2019 American Association for Anatomy.
Collapse
Affiliation(s)
- Jun Song
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, 350122, People's Republic of China
| | - Sai-Jun Ma
- Clinical Laboratory, Second Inpatient Department, Fuzhou General Hospital, Fuzhou, Fujian, 350108, People's Republic of China
| | - Jian-Hua Luo
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, 350122, People's Republic of China
| | - Hui Liu
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, 350122, People's Republic of China
| | - Li Li
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, 350122, People's Republic of China
| | - Zhi-Guang Zhang
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, 350122, People's Republic of China
| | - Lu-Shan Chen
- Pathology, The Affiliated Union Hospital of Fujian Medical University, Fuzhou, Fujian, 350001, People's Republic of China
| | - Rui-Xiang Zhou
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, 350122, People's Republic of China
| |
Collapse
|
10
|
Maruei-Milan R, Heidari Z, Salimi S. Role of MDM2 309T>G (rs2279744) and I/D (rs3730485) polymorphisms and haplotypes in risk of papillary thyroid carcinoma, tumor stage, tumor size, and early onset of tumor: A case control study. J Cell Physiol 2018; 234:12934-12940. [PMID: 30548972 DOI: 10.1002/jcp.27960] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 11/19/2018] [Indexed: 01/09/2023]
Abstract
Murine double minute clone 2 (MDM2) protein plays an important role in the regulation of p53 tumor suppressor. Genetic polymorphisms of the MDM2 gene are the candidate variants in susceptibility to various cancers. In the present study, we aimed to investigate the possible effects of MDM2 309T>G (rs2279744) and I/D (rs3730485) polymorphisms on papillary thyroid carcinoma (PTC) susceptibility and clinical or pathological features of the disease. A case control study was carried out involving in a total of 131 patients with PTC and 144 healthy controls. Both cases and controls were genotyped for MDM2 309T>G and I/D polymorphisms. There was no significant difference regarding MDM2 309T>G and I/D genotypes between patients with PTC and controls in neither dominant nor recessive and allelic models. The frequency of G-D haplotype was higher in patients with PTC and this haplotype was associated with a 1.7-fold increased risk of PTC. The MDM2 309T>G polymorphism was associated with a higher risk of III-IV stages in patients with PTC. The MDM2 ID genotype was significantly higher in patients with PTC less than 40 years and associated with larger tumor size (≥1 cm). In conclusion, the G-D haplotype but not MDM2 309T>G and I/D polymorphisms were associated with higher risk of PTC. MDM2 309T>G polymorphism was associated with a higher incidence of III-IV stages, however, I/D polymorphism was associated with larger tumor size and a lower age of disease occurrence.
Collapse
Affiliation(s)
- Rostam Maruei-Milan
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Zahra Heidari
- Department of Endocrinology, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Saeedeh Salimi
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran.,Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| |
Collapse
|
11
|
Zhao Y, Wei L, Shao M, Huang X, Chang J, Zheng J, Chu J, Cui Q, Peng L, Luo Y, Tan W, Tan W, Lin D, Wu C. BRCA1-Associated Protein Increases Invasiveness of Esophageal Squamous Cell Carcinoma. Gastroenterology 2017; 153:1304-1319.e5. [PMID: 28780075 DOI: 10.1053/j.gastro.2017.07.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 01/01/2023]
Abstract
BACKGROUND & AIMS We performed a screen for genes whose expression correlates with invasiveness of esophageal squamous cell carcinoma (ESCC) cells. We studied the effects of overexpression and knockdown of these genes in cell lines and expression levels in patient samples. METHODS We selected genes for analysis from 11 loci associated with risk of ESCC. We analyzed the effects of knocking down expression of 47 of these genes using RNA interference on-chip analysis in ESCC cells and HeLa cells. Cells with gene overexpression and knockdown were analyzed in migration and invasion assays or injected into nude mice and metastasis of xenograft tumors was quantified. We collected ESCC and non-tumor esophageal tissues from 94 individuals who underwent surgery in China from 2010 and 2014; clinical information was collected and survival time was measured from the date of diagnosis to the date of last follow-up or death. Levels of messenger RNAs (mRNAs) were quantified by RNA sequencing, and levels of proteins were determined from immunoblot analyses. Patient survival was compared with mRNA levels using Kaplan-Meier methods and hazard ratios were calculated by Cox models. RESULTS We identified 8 genes whose disruption increased migration and 10 genes whose disruption reduced migration. Knockdown of BRCA1-associated protein gene (BRAP) significantly reduced migration of KYSE30, KYSE150, and HeLa cells. In patient tumors, 90% of ESCCs examined had higher levels of BRAP protein than paired non-tumor tissues, and 63.8% had gains in BRAP DNA copy number. Levels of BRAP mRNA in ESCC tissues correlated with patient survival time, and high expression increased risk of death 2.4-fold compared with low expression. ESCCs that had metastasized to lymph node had significantly higher levels of BRAP mRNA than tumors without metastases. Knockdown of BRAP in ESCC and HeLa cell lines significantly reduced migration and invasiveness; these cell lines formed less metastases in mice than control cells. Nuclear translocation of the nuclear factor-κB (NF-κB) P65 subunit and phosphorylation of inhibitor of NF-κB kinase subunit β (IKBKB or IKKβ) increased in cells that overexpressed BRAP and decreased in cells with BRAP knockdown. In immunoprecipitation assays, BRAP interacted directly with IKKβ. Expression of matrix metalloproteinase 9 and vascular epithelial growth factor C, which are regulated by NF-κB, was significantly reduced in cells with knockdown of BRAP and significantly increased in cells that overexpressed BRAP. CONCLUSIONS Expression of BRAP is increased in ESCC samples compared with non-tumor esophageal tissues; increased expression correlates with reduced patient survival time and promotes metastasis of xenograft tumors in mice. BRAP overexpression leads to increased activity of NF-κB and expression of matrix metalloproteinase 9 and vascular epithelial growth factor C.
Collapse
Affiliation(s)
- Yanjie Zhao
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lixuan Wei
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Mingming Shao
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xudong Huang
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiang Chang
- Key Laboratory for Environment and Health, Ministry of Education, School of Public Health, Huazhong University of Science and Technology, Wuhan, China
| | - Jian Zheng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China
| | - Jiahui Chu
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qionghua Cui
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Linna Peng
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yingying Luo
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wenle Tan
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wen Tan
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dongxin Lin
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China; Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China.
| | - Chen Wu
- Department of Etiology and Carcinogenesis, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| |
Collapse
|
12
|
Tas A, Atabey M, Caglayan G, Bostanci ME, Sahin Bolukbasi S, Topcu O, Silig Y. Investigation of the association between the MDM2 T309G polymorphism and gastric cancer. Biomed Rep 2017; 7:469-473. [PMID: 29181159 DOI: 10.3892/br.2017.978] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 08/25/2017] [Indexed: 01/10/2023] Open
Abstract
Murine double minute clone 2 oncoprotein (MDM2) is a key component in the regulation of the tumour suppressor p53. The association between the MDM2 polymorphism and gastric cancer (GC) has been investigated in Turkish population. In the present case-control study, the aim was to investigate the association between genetic polymorphisms of the MDM2 gene (a major regulator of p53 function) and primary GC risk in a Turkish population. The polymorphism, T309G (rs2279744) in the MDM2 gene was determined in patients with GC (n=65) and in healthy control subjects (n=67) using the polymerase chain reaction-restriction fragment length polymorphism method. The findings were evaluated using logistic regression and χ2 tests. No statistically significant differences were observed between the control subjects and patients with GC regarding smoking status. A comparison between GC cases and control subjects indicated a statistically significant difference for family history of cancer [odds ratio (OR)=0.17; 95% confidence interval (CI), 0.05-0.56; χ2=0.19; P=0.01]. A significant difference was identified in the GG genotype distribution between GC patients and control subjects (OR=4.58; 95% CI, 1.18-17.79; P=0.022). Thus, the results of the present study indicate that the MDM2 gene T309G intron (GG) genotype may be an important risk factor for GC development in the Turkish population.
Collapse
Affiliation(s)
- Ayca Tas
- Department of Nutrition and Diet, Cumhuriyet University, Faculty of Health Sciences, 58140 Sivas, Turkey
| | - Mustafa Atabey
- Department of General Surgery, Cumhuriyet University, Faculty of Medicine, 58140 Sivas, Turkey
| | - Gulcin Caglayan
- Department of Biochemistry, Cumhuriyet University, Faculty of Medicine, 58140 Sivas, Turkey
| | | | - Serap Sahin Bolukbasi
- Department of Biochemistry, Cumhuriyet University, Faculty of Pharmaceutics, 58140 Sivas, Turkey
| | - Omer Topcu
- Department of General Surgery, Cumhuriyet University, Faculty of Medicine, 58140 Sivas, Turkey
| | - Yavuz Silig
- Department of Biochemistry, Cumhuriyet University, Faculty of Medicine, 58140 Sivas, Turkey
| |
Collapse
|
13
|
Duan X, Li J. Association between MDM2 SNP309, p53 Arg72Pro, and hepatocellular carcinoma risk: A MOOSE-compliant meta-analysis. Medicine (Baltimore) 2017; 96:e7856. [PMID: 28885338 PMCID: PMC6392589 DOI: 10.1097/md.0000000000007856] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Epidemiological studies have determined the associations between polymorphisms on the promoter of MDM2 (SNP309) and the codon 72 on exon 4 of p53 (p53 Arg72Pro) and the risk of hepatocellular carcinoma (HCC); however, the results were not always consistent. The aim of the present meta-analysis was to evaluate the overall associations between these 2 variants and HCC risk.The MEDLINE, Web of science, EMBASE, Cochrane Library, and CNKI databases were searched for eligibility studies and the data were synthesized under the fixed- or random-effects model. Heterogeneity among the studies was evaluated with the Cochrane test Q and I statistic.For MDM2 SNP309, the pooled odds ratio (OR) from 15 independent studies with a total of 4038 cases and 5491 controls suggested a significant association for the variant with HCC risk [allele model, G vs T: pooled OR = 1.48, 95% confidence interval (95% CI) = 1.26-1.73; pooled OR = 1.53, 95% CI = 1.26-1.81, for G/T vs T/T; pooled OR = 2.04, 95% CI = 1.54-2.71 for G/G vs T/T]. For p53 Arg72Pro, a total of 21 studies with 7285 cases and 9710 controls suggested that the variant was also associated with HCC risk under common genetic model (allele Pro vs Arg, pooled OR = 1.13, 95% CI = 1.02-1.25; Pro/Pro vs Arg/Arg, pooled OR = 1.32, 95% CI =1.06-1.64). No publication bias was found for all the meta-analysis as suggested by the Begg funnel plot and Egger tests.These results suggested that variants MDM2 SNP309 and p53 Arg72Pro are susceptibility factors for HCC; however, more studies are warranted to validate the results.
Collapse
Affiliation(s)
- Xiaohua Duan
- School of Life Science and Technology, ShanghaiTech University
| | - Jingquan Li
- School of Public Health, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
14
|
Salimi S, Rezaei M, Mohammadpour-Gharehbagh A, Sajadian M, Sandoughi M. The ID genotype of MDM2 40 bp insertion/deletion polymorphism was associated with lower risk of SLE. Postgrad Med J 2017; 93:758-761. [DOI: 10.1136/postgradmedj-2017-134851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 05/05/2017] [Accepted: 05/21/2017] [Indexed: 01/30/2023]
|
15
|
Liu J, Zhou N, Fu R, Cao D, Si Y, Li A, Zhao H, Zhang Q, Yu H. The polymorphism of chicken-type lysozyme gene in Japanese flounder (Paralichthys olivaceus) and its association with resistance/susceptibility to Listonella anguillarum. FISH & SHELLFISH IMMUNOLOGY 2017; 66:43-49. [PMID: 28476668 DOI: 10.1016/j.fsi.2017.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 04/27/2017] [Accepted: 05/01/2017] [Indexed: 06/07/2023]
Abstract
Lysozyme is a crucially spread hydrolase in organisms that can defend against bacterial infection in innate immunity. In this study, we successfully sequenced the coding region of chicken-type lysozyme gene (PoLysC) in Paralichthys olivaceus and identified nine single nucleotide polymorphisms (SNPs). We then amplified the 2500 bp promoter region of lysozyme and identified the eight sites of polymorphisms. All SNPs were genotyped between susceptible and resistance groups after Listonella anguillarum challenge. One of these SNP sites in the codon of PoLysC was genotyped and determined to be a significant marker by analyzing its distribution in the susceptible and resistant groups. As a nonsynonymous mutation, the frequency of 140G/C genotype in the resistant group was higher (67.74%) than that in the susceptible group (32.26%). The linkage between SNP140 and polymorphisms in the promoter region was also studied. Results revealed that the frequency of haplotype CC-536/CC-1200/GG140 in the resistance group was significantly higher than that in the susceptible group. The quantitative expression of lysozyme gene in the resistant group was also higher than that in the susceptible group. This finding indicated that the linkage between polymorphism -536 and -1200 sites in promoter and SNP140 in codon sequence was associated with the resistance of P. olivaceus to L. anguillarum. All these results suggest that the mutations in promoter and coding region were related to changes in PoLysC for resisting L. anguillarum. The haplotype CC-536/CC-1200/GG140 was a potential marker and can thus be applied to selective breeding for the disease resistance of P. olivaceus.
Collapse
Affiliation(s)
- Jinxiang Liu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Nayu Zhou
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Ruixue Fu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Dandan Cao
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Yu Si
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Aoyun Li
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Haitao Zhao
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China
| | - Quanqi Zhang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, 266237, Qingdao, Shandong, China
| | - Haiyang Yu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, 266003, Qingdao, Shandong, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, 266237, Qingdao, Shandong, China.
| |
Collapse
|
16
|
Salimi S, Mohammadpour-Gharehbagh A, Rezaei M, Sajadian M, Teimoori B, Yazdi A, Mokhtari M, Yaghmaei M. The MDM2 promoter T309G polymorphism was associated with preeclampsia susceptibility. J Assist Reprod Genet 2017; 34:951-956. [PMID: 28508227 DOI: 10.1007/s10815-017-0941-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 04/30/2017] [Indexed: 12/14/2022] Open
Abstract
PURPOSE Preeclampsia (PE) is a hypertensive disorder of pregnancy in which abnormal proliferation and apoptosis of placenta trophoblast has a pivotal role in its pathophysiology. The aim of the current study was to examine the association between Mouse Double Minute 2 (MDM2) T309G and 40 bp insertion/deletion (I/D) polymorphisms and PE risk. METHODS A case-control study was conducted on 208 PE women and 164 healthy pregnant women matching age, sex, and ethnicity. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and PCR methods were used for genotyping. RESULTS The MDM2 309GG genotype was associated with PE, and this genotype was found to be a risk factor for PE. There was no association between the MDM2 I/D polymorphism and PE. The haplotype-based association analysis revealed no association between MDM2 T309G and 40 bp I/D polymorphisms and PE. The frequency of TT-DD and GG-DD combined genotypes were significantly higher in PE women with marginal P values (P = 0.046). CONCLUSIONS The MDM2 309GG genotype was associated with higher risk of PE. The TT-DD and GG-DD combined genotypes were higher in PE women.
Collapse
Affiliation(s)
- Saeedeh Salimi
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.,Department of Clinical Biochemistry, School of Medicine and Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Abbas Mohammadpour-Gharehbagh
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran. .,Department of Clinical Biochemistry, School of Medicine and Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
| | - Mahnaz Rezaei
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.,Department of Clinical Biochemistry, School of Medicine and Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mojtaba Sajadian
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.,Department of Clinical Biochemistry, School of Medicine and Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Batool Teimoori
- Department of Obstetrics and Gynecology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Atefeh Yazdi
- Department of Obstetrics and Gynecology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mojgan Mokhtari
- Department of Obstetrics and Gynecology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Minoo Yaghmaei
- Department of Obstetrics and Gynecology, School of Medicine, Shahid Beheshty University of Medical Sciences, Tehran, Iran
| |
Collapse
|
17
|
Oliner JD, Saiki AY, Caenepeel S. The Role of MDM2 Amplification and Overexpression in Tumorigenesis. Cold Spring Harb Perspect Med 2016; 6:cshperspect.a026336. [PMID: 27194168 DOI: 10.1101/cshperspect.a026336] [Citation(s) in RCA: 145] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Mouse double minute 2 (MDM2) is a critical negative regulator of the tumor suppressor p53, playing a key role in controlling its transcriptional activity, protein stability, and nuclear localization. MDM2 expression is up-regulated in numerous cancers, resulting in a loss of p53-dependent activities, such as apoptosis and cell-cycle arrest. Genetic amplification and inheritance of MDM2 promoter single-nucleotide polymorphisms (SNPs) are the two best-studied mechanisms for up-regulating MDM2 activity. This article provides an overview of these events in human cancer, highlighting the frequent occurrence of MDM2 amplification in sarcoma and the role of SNP309 and SNP285 in regulating MDM2 expression and cancer risk. The availability of large-scale genomic profiling datasets, like those from The Cancer Genome Atlas Research Network, have provided the opportunity to evaluate the consequences of MDM2 amplification and SNP inheritance across high-quality tumor samples from diverse cancer indications.
Collapse
Affiliation(s)
| | - Anne Y Saiki
- Oncology Research, Amgen, Thousand Oaks, California 91320
| | - Sean Caenepeel
- Oncology Research, Amgen, Thousand Oaks, California 91320
| |
Collapse
|
18
|
Enokida Y, Shimizu K, Atsumi J, Kakegawa S, Takase Y, Kaira K, Yashima H, Araki T, Nakazawa S, Ohtaki Y, Nagashima T, Alexander L, Usui K, Ishikawa T, Hayashizaki Y, Takeyoshi I. Prognostic potential of the MDM2 309T>G polymorphism in stage I lung adenocarcinoma. Cancer Med 2016; 5:1791-801. [PMID: 27228500 PMCID: PMC4884639 DOI: 10.1002/cam4.750] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 03/27/2016] [Accepted: 04/04/2016] [Indexed: 11/08/2022] Open
Abstract
The MDM2 protein plays an important role in the regulation of cell proliferation and apoptosis via ubiquitination and proteasome‐mediated degradation of p53. The genetic polymorphism rs2279744 (c.309T>G) of the MDM2 gene is reportedly associated with susceptibility and/or prognosis in various cancers. In this study, we investigated the risk factors for worse survival in patients with lung adenocarcinoma (AC). We examined the association between c.309T>G and the prognosis of lung cancer by retrospectively reviewing 453 lung cancer patients. We studied both, clinicopathological and genetic characteristics, including the c.309T>G, p53 Arg72Pro, EGFR,KRAS, and p53 mutations. Associations between these factors and survival outcome were analyzed using Cox proportional hazards models. The frequencies of MDM2 polymorphisms were T/T, 20.8%; T/G, 48.6%, and G/G, 30.7%. The overall survival (OS) of AC patients with pathological stage I disease and the MDM2 T/T genotype was significantly shorter than that of those with the T/G or G/G genotypes (P = 0.02). Multivariate analysis revealed that the MDM2 T/T genotype was an independent, significant prognostic factor (hazard ratio [HR] = 2.23; 95% confidence interval [CI]: 1.07–4.65; P = 0.03). The MDM2 T/T genotype was predictive of poorer survival in a Japanese population. Genotyping for this polymorphism might predict the clinical outcomes of stage I AC patients.
Collapse
Affiliation(s)
- Yasuaki Enokida
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Kimihiro Shimizu
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Jun Atsumi
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Seiichi Kakegawa
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Yoshiaki Takase
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Kyoichi Kaira
- Department of Oncology Clinical Development, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Hideaki Yashima
- Department of Clinical Pharmacology, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Takuya Araki
- Department of Clinical Pharmacology, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Seshiru Nakazawa
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Yoichi Ohtaki
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Toshiteru Nagashima
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Lezhava Alexander
- Division of Genomic Technologies, RIKEN Center for Life Science Technologies, Yokohama, Kanagawa, 230-0045, Japan
| | - Kengo Usui
- Division of Genomic Technologies, RIKEN Center for Life Science Technologies, Yokohama, Kanagawa, 230-0045, Japan
| | - Toshihisa Ishikawa
- NGO Personalized Medicine & Healthcare, Yokohama, Kanagawa, 226-0016, Japan
| | - Yoshihide Hayashizaki
- RIKEN Preventive Medicine and Diagnosis Innovation Program, Yokohama, Kanagawa, 230-0045, Japan
| | - Izumi Takeyoshi
- Department of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| |
Collapse
|
19
|
Okamoto K, Tsunematsu R, Tahira T, Sonoda K, Asanoma K, Yagi H, Yoneda T, Hayashi K, Wake N, Kato K. SNP55, a new functional polymorphism of MDM2-P2 promoter, contributes to allele-specific expression of MDM2 in endometrial cancers. BMC MEDICAL GENETICS 2015; 16:67. [PMID: 26293665 PMCID: PMC4593204 DOI: 10.1186/s12881-015-0216-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 08/13/2015] [Indexed: 01/10/2023]
Abstract
BACKGROUND The functional single nucleotide polymorphism (SNP) in the MDM2 promoter region, SNP309, is known to be associated with various diseases, particularly cancer. Although many studies have been performed to demonstrate the mechanism of allele-specific expression (ASE) on SNP309, they have only utilized in vitro techniques. It is unknown whether ASE of MDM2 is ascribed solely to SNP309, in vivo. METHODS We attempted to evaluate ASE of MDM2 in vivo using post-labeling followed by automated capillary electrophoresis under single-strand conformation polymorphism conditions. For measuring a quantitative difference, we utilized the SNPs on the exons of MDM2 as markers, the status of which was heterozygous in a large population. To address the cause of ASE beyond 20%, we confirmed sequences of both MDM2-3'UTR and promoter regions. We assessed the SNP which might be the cause of ASE using biomolecular interaction analysis and luciferase assay. RESULTS ASE beyond 20% was detected in endometrial cancers, but not in cancer-free endometria samples only when an SNP rs1690916 was used as a marker. We suspected that this ASE in endometrial cancer was caused by the sequence heterogeneity in the MDM2-P2 promoter, and found a new functional polymorphism, which we labelled SNP55. There was no difference between cancer-free endometria and endometrial cancer samples neither for SNP55 genotype frequencies nor allele frequencies, and so, SNP55 alone does not affect endometrial cancer risk. The SNP55 status affected the DNA binding affinity of transcription factor Sp1 and nuclear factor kappa-B (NFκB). Transcriptional activity of the P2 promoter containing SNP55C was suppressed by NFκB p50 homodimers, but that of SNP55T was not. Only ASE-positive endometrial cancer samples displayed nuclear localization of NFκB p50. CONCLUSIONS Our findings suggest that both the SNP55 status and the NFκB p50 activity are important in the transcriptional regulation of MDM2 in endometrial cancers.
Collapse
Affiliation(s)
- Kanako Okamoto
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Ryosuke Tsunematsu
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan. .,Current address: Department of Obstetrics and Gynecology, National Hospital Organization Ibusuki Medical Center, 4145, Junicho, Ibusuki, Kagoshima, 891-0498, Japan.
| | - Tomoko Tahira
- Innovation Center for Medical Redox Navigation, Kyushu University, Fukuoka, Japan.
| | - Kenzo Sonoda
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Kazuo Asanoma
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Hiroshi Yagi
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Tomoko Yoneda
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Kenshi Hayashi
- Division of Genome Analysis, Research Center for Genetic Information, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan.
| | - Norio Wake
- Research Center for Environmental Medical Sciences, Kyushu University, Fukuoka, Japan.
| | - Kiyoko Kato
- Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| |
Collapse
|
20
|
Hashemi M, Omrani M, Eskandari-Nasab E, Hasani SS, Mashhadi MA, Taheri M. A 40-bp insertion/deletion polymorphism of Murine Double Minute2 (MDM2) increased the risk of breast cancer in Zahedan, Southeast Iran. IRANIAN BIOMEDICAL JOURNAL 2015; 18:245-9. [PMID: 25326024 PMCID: PMC4225065 DOI: 10.6091/ibj.13332.2014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background: MDM2 (Murine Double Minute2) is an oncoprotein that inhibits the P53 activity. Overexpression of MDM2 gene has been reported in several human tumors. In the present study, we aimed to evaluate the impact of 40-bp insertion/deletion (ins/del) polymorphism on the promoter of MDM2 and susceptibility to breast cancer in a sample of Iranian population. Methods: This case-control study was carried out on 236 patients with breast cancer and 203 healthy individuals. Genomic DNA was extracted from the whole blood by the salting-out method. The 40-bp ins/del polymorphism was determined by using polymerase chain reaction. Results: The findings indicated that MDM2 ins/del variant increased the risk of breast cancer in co-dominant- (odds ratio [OR] = 2.09, 95% CI = 1.14-3.85, P = 0.018, del/del vs. ins/ins), dominant- (OR = 1.49, 95% CI = 1.02-2.18, P = 0.038, ins/del + del/del vs. ins/ins), and recessive- (OR = 1.86, 95% CI = 1.03-3.34, P = 0.038, del/del vs. ins/ins + ins/del) tested inheritance models. The del allele increased the risk of breast cancer (OR = 1.48, 95% CI = 1.11-1.98, P = 0.008) compared with ins allele. Conclusions: Our result revealed that 40-bp ins/del polymorphism in the promoter of MDM2 increased the risk of breast cancer in an Iranian population. Further investigations with larger sample sizes and diverse ethnicities are needed to verify our findings.
Collapse
Affiliation(s)
- Mohammad Hashemi
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohsen Omrani
- Dept. of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Ebrahim Eskandari-Nasab
- Dept. of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Seyed-Shahaboddin Hasani
- Dept. of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohammad Ali Mashhadi
- Dept. of Internal Medicine, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohsen Taheri
- Genetics of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| |
Collapse
|
21
|
Moradi MT, Salehi Z, Aminian K, Yazdanbod A. Effects of p53 codon 72 and MDM2 SNP309 polymorphisms on gastric cancer risk among the Iranian population. Asian Pac J Cancer Prev 2015; 15:7413-7. [PMID: 25227851 DOI: 10.7314/apjcp.2014.15.17.7413] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Development of gastric cancer (GC) is a multistep process that requires alterations in the expression of oncogenes and tumor suppressor genes, occurring over several decades. The p53 tumor suppressor protein is involved in cell-cycle control, apoptosis and DNA repair. One of the most important regulators of p53 is MDM2, which acts as a negative regulator in the p53 pathway. Based on the key role of p53 and MDM2 in tumor suppression, polymorphisms that cause change in their function might affect cancer risk. We therefore elevated associations of the polymorphisms of p53 (R72P) and MDM2 (SNP309) with GC in Iran. MATERIALS AND METHODS A total of 104 patients with gastric cancer and 100 controls were recruited. Genomic DNA was extracted from fresh gastric samples. Genotyping of the p53 and MDM2 genes was performed using allele specific PCR (AS-PCR). RESULTS There was no significant difference between the p53 codon 72 polymorphism distribution in control and patient groups (p=0.54), but the G allele of MDM2 was found to be over-represented in patients (p=0. 01, Odds Ratio=2. 08, 95% Confidence Interval= 1.37-4.34). CONCLUSIONS The p53 R72P seems not to be a potential risk factor for development of GC among Iranian patients, but our data suggest that MDM2 SNP309 might modify the risk related to GC.
Collapse
Affiliation(s)
- Mohammad-Taher Moradi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran E-mail :
| | | | | | | |
Collapse
|
22
|
Hori Y, Miyabe K, Yoshida M, Nakazawa T, Hayashi K, Naitoh I, Shimizu S, Kondo H, Nishi Y, Umemura S, Kato A, Ohara H, Inagaki H, Joh T. Impact of TP53 codon 72 and MDM2 SNP 309 polymorphisms in pancreatic ductal adenocarcinoma. PLoS One 2015; 10:e0118829. [PMID: 25734904 PMCID: PMC4348172 DOI: 10.1371/journal.pone.0118829] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 12/02/2014] [Indexed: 12/16/2022] Open
Abstract
Single-nucleotide polymorphisms (SNPs) of TP53 (codon 72, rs1042522) and MDM2 promoter (SNP 309, rs2279744) have been associated with risk for various human cancers. However, studies analyzing these polymorphisms in pancreatic ductal adenocarcinoma (PDAC) are lacking. We investigated TP53 codon 72 and MDM2 SNP 309 polymorphisms in 32 patients with PDAC, 16 patients with chronic pancreatitis (CP), and 32 normal controls, using formalin-fixed paraffin-embedded tissue. We also examined TP53 and MDM2 protein immunohistochemistry (IHC) to assess the involvement of these differences in malignant transformation and disease progression. TP53 Pro/Pro genotype was significantly more frequent in PDAC patients than in controls (65.6 vs. 15.6%, p < 0.001) and no significant difference was found between CP patients (37.5%) and controls. In MDM2 SNP 309, there were no significant differences among the three groups. Based on the Kaplan-Meier analysis, overall survival was significantly shorter in MDM2 G/G genotypes compared with other genotypes (G/T and T/T) (359 vs. 911 days, p = 0.016) whereas no significant differences in TP53 genotypes were observed (638 vs. 752 days, p = 0.471). Although TP53 IHC was frequent in PDAC patients (53.1%), TP53 and MDM2 protein expression was not correlated with polymorphisms. Our study demonstrated TP53 codon 72 polymorphism is potentially a genetic predisposing factor while MDM2 SNP 309 polymorphism might be useful in predicting survival outcome.
Collapse
Affiliation(s)
- Yasuki Hori
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Katsuyuki Miyabe
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Michihiro Yoshida
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takahiro Nakazawa
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kazuki Hayashi
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Itaru Naitoh
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shuya Shimizu
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiromu Kondo
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yuji Nishi
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shuichiro Umemura
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Akihisa Kato
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hirotaka Ohara
- Department of Community-based Medical Education, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiroshi Inagaki
- Department of Pathology and Molecular Diagnostics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takashi Joh
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| |
Collapse
|
23
|
Song B, Duan ZY, Zhong YH, Lei N, Yang YQ, Luo KY. Meta-analysis of the MDM2 T309G polymorphism and gastric cancer risk. Asian Pac J Cancer Prev 2015; 14:6649-51. [PMID: 24377582 DOI: 10.7314/apjcp.2013.14.11.6649] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Mdm2 binds to the amino-terminus of p53 to induce its degradation and a single nucleotide polymorphism in the MDM2 promoter region (T309G) has been reported to increase the risk of several carcinomas, such as gastric cancer. However, the results of published studies to analyze the association between MDM2 T309G and gastric cancer havve often conflicted. METHODS To better illustrate the filiation between MDM2 T309G and gastric cancer, we performed a meta-analysis. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to evaluate the strength of the relationship. The pooled ORs were performed for 4 models, additive, recessive, co-dominant model, and dominant. RESULTS Nine published case-control studies including 3,225 gastric cancer cases and 4,118 controls were identified. The MDM2 T309G polymorphism was associated with a significantly increased risk of gastric cancer risk when all studies were pooled into the meta-analysis (GG versus TT, OR=1.57; 95%CI=1.57-2.12; p=0.003) and GG versus GT/TT, OR=1.52; 95%CI=1.217-1.90; p<0.001). Furthermore, Egger<s test did not show any evidence of publication bias (P = 0.608 for GG versus TT). CONCLUSION Our results suggest that the MDM2 T309G polymorphism is indeed associated with a significantly increased risk of gastric cancer.
Collapse
Affiliation(s)
- Bo Song
- Department of General Surgery, The Fourth Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China E-mail :
| | | | | | | | | | | |
Collapse
|
24
|
Salimi S, Hajizadeh A, Khodamian M, Pejman A, Fazeli K, Yaghmaei M. Age-dependent association of MDM2
promoter polymorphisms and uterine leiomyoma in South-East Iran: A preliminary report. J Obstet Gynaecol Res 2014; 41:729-34. [DOI: 10.1111/jog.12625] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 09/28/2014] [Indexed: 12/26/2022]
Affiliation(s)
- Saeedeh Salimi
- Cellular and Molecular Research Center; Zahedan University of Medical Sciences; Zahedan Iran
- Department of Clinical Biochemistry, School of Medicine; Zahedan University of Medical Sciences; Zahedan Iran
| | - Azam Hajizadeh
- Department of Clinical Biochemistry, School of Medicine; Zahedan University of Medical Sciences; Zahedan Iran
| | - Maryam Khodamian
- Department of Clinical Biochemistry, School of Medicine; Zahedan University of Medical Sciences; Zahedan Iran
| | - Atefeh Pejman
- Department of Obstetrics and Gynecology, School of Medicine; Zahedan University of Medical Sciences; Zahedan Iran
| | - Kimia Fazeli
- Faculty of Medicine; Mashhad University of Medical Sciences; Mashhad Iran
| | - Minoo Yaghmaei
- Department of Obstetrics and Gynecology, School of Medicine; Zahedan University of Medical Sciences; Zahedan Iran
| |
Collapse
|
25
|
Wu GC, Zhang ZT. Genetic association of single nucleotide polymorphisms in P53 pathway with gastric cancer risk in a Chinese Han population. Med Oncol 2014; 32:401. [PMID: 25479941 DOI: 10.1007/s12032-014-0401-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 11/21/2014] [Indexed: 12/11/2022]
Abstract
The tumor suppressor gene P53 plays an important role in carcinogenesis, and the P53 pathway is central both in reducing cancer frequency and in mediating the response of cancer therapies. MDM2, MDM4 and Hausp genes are all critical regulators of the tumor suppressor P53. Many studies have evaluated the association of single nucleotide polymorphisms (SNPs) in P53 pathway with the risk of common cancers. However, the results are still inconclusive. In this work, we analyzed the association of SNPs in P53 (rs1042522), MDM2 (rs2279744), MDM4 (rs1380576) and Hausp (rs1529916) genes with gastric cancer in a hospital-based Chinese Han population (642 cases and 720 cancer-free controls). We found that the polymorphisms of P53 (rs1042522) and MDM2 (rs2279744) are associated with gastric cancer risk, whereas no significant association was observed between variant genotype of other two polymorphisms (MDM4 rs1380576 and Hausp rs1529916) and gastric cancer risk.
Collapse
Affiliation(s)
- Guo-Cong Wu
- Department of General Surgery, Beijing Friendship Hospital Affiliated with Capital Medical University, Beijing, 100050, China,
| | | |
Collapse
|
26
|
de Martino M, Taus C, Wessely IS, Lucca I, Hofbauer SL, Haitel A, Shariat SF, Klatte T. The T309G murine double minute 2 gene polymorphism is an independent prognostic factor for patients with renal cell carcinoma. DNA Cell Biol 2014; 34:107-12. [PMID: 25415135 DOI: 10.1089/dna.2014.2653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The purpose of this study was to evaluate the association of the T309G MDM2 gene polymorphism with renal cell carcinoma (RCC) risk, pathology, and cancer-specific survival (CSS). T309G MDM2 was genotyped in 449 Caucasians, including 240 with RCC and 209 cancer-free controls. The T309G MDM2 genotype was TT in 174 (38.8%), GT in 214 (47.7%), and GG in 61 (13.6%) subjects, without any significant differences between cases and controls on both univariable (p=0.58) and multivariable logistic regression (each p>0.25). Furthermore, T309G MDM2 was not linked with T stage (p=0.75), N stage (p=0.37), M stage (p=0.94), grade (p=0.21), and subtype (p=0.55). There was, however, a statistically significant association of T309G MDM2 with CSS (p=0.022): patients with TT had significantly worse survival than GG/GT (p=0.009), while those with GT and GG had similar outcomes (p=0.92). The 5-year survival rate for patients with TT, GT, and GG was 69.5%, 84.5%, and 89.7%, respectively. On the multivariable analysis, T309G was identified as an independent prognostic factor. The T309G MDM2 polymorphism is an independent prognostic factor for patients with RCC, with the TT genotype being associated with worse prognosis. In this study, there were no significant associations with RCC risk and pathology.
Collapse
Affiliation(s)
- Michela de Martino
- 1 Department of Urology, Comprehensive Cancer Center, Vienna General Hospital, Medical University of Vienna , Vienna, Austria
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Abdel Hamid TM, El Gammal MM, Eibead GT, Saber MM, Abol Elazm OM. Clinical impact of SNP of P53 genes pathway on the adult AML patients. ACTA ACUST UNITED AC 2014; 20:328-35. [PMID: 25232917 DOI: 10.1179/1607845414y.0000000200] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
INTRODUCTION Acute myeloid leukemia (AML) is a highly heterogeneous disease, with biologically and prognostically different subtypes. AIM To study the impact of p53, p21, and mdm2 gene polymorphisms on the clinical outcome in adult AML patients treated at the National Cancer Institute (NCI) - Cairo University. METHODS Forty-eight adult AML patients presented to the Medical Oncology Department, NCI, from April 2010 till November 2011. Clinical data and bone marrow samples were obtained. Molecular genetic analysis involving P53, MDM2, and P21 single-nucleotide gene polymorphisms was done using polymerase chain reaction-restriction fragment length polymorphism coupled analysis. RESULTS The mean age was 35.7 years. After a median follow-up period of 12 months, 28 patients (58.4%) achieved complete remission (CR) and the overall survival (OS) was 8.7 months. Patients with homozygous Arg/arg at codon 72 of P53 had a better median OS months than Arg/Pro and Pro/Pro (13.4 vs. 8.4 vs. 1.5 months, respectively; P = 0.045). P53/p21 combination had a better median OS and disease-free survival (DFS) of 12.1 and 13.7 months for wild type cases (GG + Ser/ser) and 20.3 and 20.7 months for patients with either variant genes (GC + Ser/arg) compared with 1.1 and 1.9 months for patients with both variant genes (CC + arg/arg), (P = 0.037 and 0.004). The presence of wild genotype of either P21 or MDM2 may abolish the effect of P53 homozygous variant genotype on the OS. Neither p21nor mdm2 polymorphism alone showed an impact on OS or DFS. CR was not affected by any of the three gene polymorphisms. CONCLUSION The p53 pathway gene polymorphisms may affect the OS of adult AML patients.
Collapse
|
28
|
Ishihara M, Ohmiya N, Nakamura M, Funasaka K, Miyahara R, Ohno E, Kawashima H, Itoh A, Hirooka Y, Watanabe O, Ando T, Goto H. Risk factors of symptomatic NSAID-induced small intestinal injury and diaphragm disease. Aliment Pharmacol Ther 2014; 40:538-47. [PMID: 25041257 DOI: 10.1111/apt.12858] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/07/2013] [Accepted: 06/11/2014] [Indexed: 12/22/2022]
Abstract
BACKGROUND The aetiology for nonsteroidal anti-inflammatory drug (NSAID)-induced small intestinal injuries has not been well characterised. AIM To determine the risk factors of symptomatic NSAID-induced small intestinal injuries, including diaphragm disease. METHODS Of the 1262 symptomatic patients who underwent videocapsule endoscopy and/or double-balloon enteroscopy, 156 consecutive patients were verified as having taken NSAIDs. Their CYP2C9*2, *3 and *13 single nucleotide polymorphisms (SNPs) were determined by allelic discrimination with Taqman 5'-nuclease assays. RESULTS Of the 156 NSAIDs users, 31 patients (20%) were diagnosed with NSAID-induced small intestinal injury. Multivariate analysis indicated that the presence of comorbidities and the use of oxicams (meloxicam, ampiroxicam and lornoxicam) or diclofenac were associated with an increased risk of NSAID-induced small intestinal injury (adjusted OR: 2.97, 95% CI: 1.05-8.41, P = 0.041 and adjusted OR: 7.05, 95% CI: 2.04-24.40, P = 0.002, respectively). The combination of aspirin and non-aspirin NSAID was more damaging than aspirin alone. Age, sex, concomitant use of proton pump inhibitors, indications for NSAIDs use, duration of NSAIDs use and CYP2C9*2, *3 and *13SNPs were unrelated. The use of meloxicam and CYP2C9*3SNPs were significantly associated with an increased risk for diaphragm disease (adjusted OR: 183.75, 95% CI: 21.34-1582.38; P < 0.0001 and adjusted OR: 12.94, 95% CI: 1.55-108.36, P = 0.018, respectively). CONCLUSION The use of specific NSAIDs and the factors interfering with NSAIDs metabolism might associate with small intestinal injury, especially with diaphragm disease.
Collapse
Affiliation(s)
- M Ishihara
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Shen W, Hu P, Cao JQ, Liu XX, Shao JH. MDM2 oncogene, E3 ubiquitin protein ligase T309G polymorphism and risk of oesophageal or gastric cancer: meta-analysis of 15 studies. J Int Med Res 2014; 42:1065-76. [PMID: 25070969 DOI: 10.1177/0300060514527910] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE To investigate the association between potentially functional MDM2 oncogene, E3 ubiquitin protein ligase (MDM2) T309G polymorphism and susceptibility to oesophageal or gastric cancer. METHODS Two investigators independently searched the PubMed and Chinese National Knowledge Infrastructure databases for studies published before September 2013. RESULTS Pooled results showed that the variant homozygous 309 GG genotype (versus TT) was significantly associated with increased risk of both oesophageal (odds ratio [OR] 0.77; 95% confidence interval [CI] 0.65, 0.90) and gastric cancer (OR 0.52; 95% CI 0.38, 0.72). Subgroup analysis revealed a 309 GG-associated increased risk for both cancer types in Asian populations, particularly among Chinese and Japanese ethnicity. When stratified for Helicobacter pylori infection and histological type of gastric cancer, the 309 GG-related risk was higher in H. pylori-positive patients (T versus G: OR 0.37; 95% CI 0.22, 0.63) and the association was stronger with intestinal (TT + TG versus GG: OR 0.68; 95% CI 0.54, 0.87) rather than diffuse gastric-cancer type. CONCLUSIONS The MDM2 T309G polymorphism may be significantly associated with increased susceptibility to oesophageal or gastric cancer, particularly among Eastern Asian populations.
Collapse
Affiliation(s)
- Wei Shen
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ping Hu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jia-qing Cao
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xiu-xia Liu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jiang-hua Shao
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| |
Collapse
|
30
|
Gao J, Kang AJ, Lin S, Dai ZJ, Zhang SQ, Liu D, Zhao Y, Yang PT, Wang M, Wang XJ. Association between MDM2 rs 2279744 polymorphism and breast cancer susceptibility: a meta-analysis based on 9,788 cases and 11,195 controls. Ther Clin Risk Manag 2014; 10:269-77. [PMID: 24790452 PMCID: PMC3999277 DOI: 10.2147/tcrm.s60680] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Purpose Previous studies have suggested associations between MDM2 (mouse double minute 2 homolog) polymorphisms and cancer risk. The aim of this study was to evaluate the relationship between the MDM2 rs 2279744 polymorphism and the susceptibility of breast cancer. Methods We searched PubMed, Web of Knowledge, Embase, and the Chinese National Knowledge Infrastructure (CNKI) database for case–control studies published up to October 2013 that investigated MDM2 rs 2279744 polymorphism and breast cancer risk. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the strength of these associations. Results A total of 19 studies were identified for the meta-analysis, including 9,788 cases and 11,195 controls. The variant heterozygote (TG) was associated with breast cancer risk in the overall population (TG vs TT: OR =1.10, 95% CI =1.04–1.17, P=0.001, P=0.23 for heterogeneity test). In the subgroup analyses by ethnicity, a significantly increased risk was observed among Asians (G vs T: OR =1.12, 95% CI =1.02–1.23, P=0.02, Phet=0.04; GG vs TT: OR =1.29, 95% CI =1.06–1.56, P=0.01, Phet=0.04; TG vs TT: OR =1.36, 95% CI =1.15–1.60, P=0.0004, Phet=0.45; dominant model TG+GG vs TT: OR =1.21, 95% CI =1.03–1.41, P=0.02, Phet=0.07). However, among Caucasians, rs 2279744 was associated with breast cancer risk in only one genotype (TG vs TT: OR =1.09, 95% CI =1.00–1.18, P=0.04, Phet=0.37). No publication bias was found in the present study. Conclusion This meta-analysis provides evidence for the association between the MDM2 rs 2279744 polymorphism and breast cancer susceptibility. The results suggest that the MDM2 rs 2279744 polymorphism plays an important role in breast cancer, especially in Asians.
Collapse
Affiliation(s)
- Jie Gao
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China ; Department of Nephrology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - An-Jing Kang
- Department of Pathology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Shuai Lin
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Zhi-Jun Dai
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Shu-Qun Zhang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Di Liu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Yang Zhao
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Peng-Tao Yang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Meng Wang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Xi-Jing Wang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| |
Collapse
|
31
|
Tian X, Tian Y, Ma P, Sui CG, Meng FD, Li Y, Fu LY, Jiang T, Wang Y, Ji FJ, Fang XD, Jiang YH. Association between MDM2 SNP309 T>G and risk of gastric cancer: a meta-analysis. Asian Pac J Cancer Prev 2014; 14:1925-9. [PMID: 23679294 DOI: 10.7314/apjcp.2013.14.3.1925] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND As a negative regulator of P53, MDM2 plays an important role in carcinogenesis; a polymorphism in its promoter region. SNP309 T>G, is known to increase the expression of MDM2, thus being considered related to higher susceptibility to neoplasia. However, no agreement has been achieved regarding its effects on gastric cancer. METHODS The present systematic meta-analysis was performed based on comprehensive literature search from Pubmed, Web of science and CBM databases. RESULTS It was suggested from 6 independent studies that the GG genotype is associated with a significantly increased risk of gastric cancer (Recessive: OR = 1.43, 95% CI = 1.08-1.91, P = 0.013), and subgroup analysis also confirmed the relationship (English publications-recessive model: OR = 1.45, 95% CI = 1.10-1.91, P = 0.009; Studies in China-recessive model: OR = 1.58, 95% CI = 1.08-2.30, P = 0.017). No publication bias was detected. CONCLUSION The meta-analysis indicated a significant inverse association between GG genotype carriage and elevated risk of gastric cancer. However, more studies and detailed information are needed to fully address the topic.
Collapse
Affiliation(s)
- Xin Tian
- Molecular Oncology Department of Cancer Research Institute, the First Affiliated Hospital, China Medical University, Shenyang, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Helicobacter pyloriInfection andMDM2SNP309 Association with Gastric Cancer Susceptibility. Genet Test Mol Biomarkers 2013; 17:794-8. [DOI: 10.1089/gtmb.2013.0173] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
|
33
|
Meta-analysis of associations between MDM2 SNP309 polymorphism and gastric cancer risk. Biomed Rep 2013; 2:105-111. [PMID: 24649079 DOI: 10.3892/br.2013.181] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 09/19/2013] [Indexed: 12/16/2022] Open
Abstract
Epidemiological studies have been conducted to evaluate genetic variations of murine double minute 2 (MDM2) SNP309 associated with the risk of gastric cancer (GC), although evidence remains conflicting. To gain a better understanding of this relationship, a meta-analysis was performed. Several electronic databases were searched up to February 2013, in order to identify relevant case-control studies. Seven published case-control studies with 2,199 cases and 3,201 controls were included. In the overall analysis, significant associations between the MDM2 SNP309 variant and GC risk were found for G vs. T alleles (OR=1.35; 95% CI, 1.24-1.47), GG vs. TT (OR=1.88; 95% CI, 1.59-2.24), recessive model (OR=1.71; 95% CI, 1.49-1.96). Furthermore, stratified by cancer site, significant associations were observed in gastric cardia cancer for all the models, although no significant association was found in any of the models among non-gastric cardia cancer, with the exception of the recessive model. In the subgroup analysis by source of control, MDM2 SNP309 was associated with increased GC risk for the hospital-based case-control (HCC) study for the GG vs. TT, recessive model and for the population-based case-control (PCC) study for the GG vs. TT, recessive model. Following stratification by gender and infection status of Helicobacter pylori (HP) for the recessive model, a significant association was found only in the HP-positive infected individuals. However, no statistically significant association was observed in males, females or the HP-negative infected individuals. In summary, the association between MDM2 SNP309 and GC risk was statistically significant, particularly in gastric cardia cancer for the HP-positive population group.
Collapse
|
34
|
Qin X, Peng Q, Tang W, Lao X, Chen Z, Lai H, Deng Y, Mo C, Sui J, Wu J, Zhai L, Yang S, Li S, Zhao J. An updated meta-analysis on the association of MDM2 SNP309 polymorphism with colorectal cancer risk. PLoS One 2013; 8:e76031. [PMID: 24098760 PMCID: PMC3786895 DOI: 10.1371/journal.pone.0076031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 08/21/2013] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND The mouse double minute 2 (MDM2) gene encodes a phosphoprotein that interacts with P53 and negatively regulates its activity. The SNP309 polymorphism (T-G) in the promoter of MDM2 gene has been reported to be associated with enhanced MDM2 expression and tumor development. Studies investigating the association between MDM2 SNP309 polymorphism and colorectal cancer (CRC) risk reported conflicting results. We performed a meta-analysis of all available studies to explore the association of this polymorphism with CRC risk. METHODS All studies published up to July 2013 on the association between MDM2 SNP309 polymorphism and CRC risk were identified by searching electronic databases PubMed, EMBASE, and Chinese Biomedical Literature database (CBM) databases. The association between the MDM2 SNP309 polymorphism and CRC risk was assessed by odds ratios (ORs) together with their 95% confidence intervals (CIs). RESULTS A total of 14 case-control studies including 4460 CRC cases and 4828 controls were identified. We did not find a significant association between the MDM2 SNP309 polymorphism and CRC risk in all genetic models in overall population. However, in subgroup analysis by ethnicity, significant associations were found in Asians (TG vs. TT: OR = 1.197, 95% CI = 1.055-1.358, P=0.005; GG+TG vs. TT: OR = 1.246, 95% CI = 1.106-1.404, P=0.000) and Africans. When stratified by HWE in controls, significantly increased risk was also found among the studies consistent with HWE (TG vs. TT: OR = 1.166, 95% CI = 1.037-1.311, P= 0.010). In subgroup analysis according to p53 mutation status, and gender, no any significant association was detected. CONCLUSIONS The present meta-analysis suggests that the MDM2 is a candidate gene for CRC susceptibility. The MDM2 SNP309 polymorphism may be a risk factor for CRC in Asians.
Collapse
Affiliation(s)
- Xue Qin
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Qiliu Peng
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Weizhong Tang
- Department of Anal and Colorectal Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xianjun Lao
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Zhiping Chen
- Department of Occupational Health and Environmental Health, School of Public Health at Guangxi Medical University, Nanning, Guangxi, China
| | - Hao Lai
- Department of Gastrointestinal Surgery, Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Yan Deng
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Cuiju Mo
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Jingzhe Sui
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Junrong Wu
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Limin Zhai
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Shi Yang
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Shan Li
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- * E-mail: (SL); (JZ)
| | - Jinmin Zhao
- Department of Orthopedic Trauma Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- * E-mail: (SL); (JZ)
| |
Collapse
|
35
|
Renouf DJ, Zhai R, Sun B, Xu W, Cheung WY, Heist RS, Kulke MH, Cescon D, Asomaning K, Marshall AL, Li S, Christiani DC, Liu G. Association of MDM2 T309G and p53 Arg72Pro polymorphisms and gastroesophageal reflux disease with survival in esophageal adenocarcinoma. J Gastroenterol Hepatol 2013; 28:1482-8. [PMID: 23735059 DOI: 10.1111/jgh.12286] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/12/2013] [Indexed: 01/27/2023]
Abstract
BACKGROUND AND AIM Although gastroesophageal reflux disease (GERD) is a risk factor for esophageal adenocarcinoma (EAC), some patients develop EAC in the absence of GERD. A putative mechanism of reflux-induced tumorigenesis involves disruptions in the p53 pathway. We assessed the interaction of GERD and p53 pathway polymorphisms on EAC prognosis. METHODS In a prospective cohort of 358 EAC patients, clinical data (including GERD history and survival) were collected. Germline DNA was genotyped for MDM2 T309G and p53 Arg72Pro. Cox proportional hazards models were used to determine adjusted hazard ratios (AHR) for associations between genotype, GERD, and genotype-GERD interactions with survival. RESULTS Compared with other genotypes, MDM2 G/G (median overall survival 21 vs 30 months; P < 0.001) and p53 Pro/Pro (12 vs 30 months; P = 0.004) were associated with shorter survival. When analyzed by GERD, MDM2 G/G was associated with shorter survival in patients without GERD (AHR 3.4, 95% CI 2.0-6.0), but not in patients with GERD (AHR 1.1 [0.7-1.8]); the MDM2-GERD interaction was significant (P = 0.003). A similar trend was seen for p53 Pro/Pro (AHRs 2.5 without GERD vs 1.4 with GERD). Combined analysis of at-risk variants (MDM2 G or p53 Pro), revealed each additional at-risk variant was associated with shorter survival in patients without GERD (AHR 1.6) but not with GERD (AHR 1.0). CONCLUSIONS MDM2 G/G and the combination of MDM2 G and p53 Pro were negative prognostic factors for EAC patients without GERD but not for those with GERD. There may be biological differences between GERD positive and GERD negative EAC.
Collapse
Affiliation(s)
- Daniel J Renouf
- Department of Medical Oncology, Princess Margaret Hospital, Toronto, Ontario; Department of Medical Oncology, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Zhang Y, Zhu H, Zhang X, Gu D, Zhou X, Wang M, Cao C, Zhang X, Wu X, Gong W, Tang Y, Zhou J, Tang C, Zhang Z, Chen J. Clinical significance of MYT1L gene polymorphisms in Chinese patients with gastric cancer. PLoS One 2013; 8:e71979. [PMID: 24015200 PMCID: PMC3756043 DOI: 10.1371/journal.pone.0071979] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Accepted: 07/06/2013] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Myelin transcription factor 1 (MYT1) and its homologue MYT1-like (MYT1L) are the two main members of MYT/NZF family transcription factors, which are highly related, share a high degree of identity and show similar regulatory functions in neural development. There are evidences from several cytology experiments showing that MYT1 is associated with carcinoma. METHODOLOGY/PRINCIPAL FINDINGS In the present study, we genotyped 944 surgically resected gastric cancer patients by the SNaPshot method to explore the association of MYT1L rs17039396 polymorphism with survival of gastric cancer in a Chinese population. We found that cardia cancer patients carrying MYT1L rs17039396 GG genotype survived for a significantly shorter time than those carrying the GA genotype. This significance was enhanced in the dominant model (GG vs. GA/AA, log-rank P = 0.001), suggesting a potential protect role of the variant A allele. Multivariate Cox regression analyses showed that the AG/GG genotypes were associated with a significantly decreased risk of death from gastric cancer (adjusted hazard ratio (HR) = 0.57, 95% confidence interval (CI) = 0.40-0.81). Stratification analyses further showed that such protective effect was statistically significant in subgroups of patients with tumor size ≤5 cm (adjusted HR = 0.34, 95%CI = 0.19-0.64), well-moderate gastric cancer (adjusted HR = 0.59, 95%CI = 0.35-0.98), no lymph-node metastasis (adjusted HR = 0.49, 95%CI = 0.31-0.76), no distant metastasis (adjusted HR = 0.59, 95%CI = 0.41-0.84). CONCLUSIONS/SIGNIFICANCE In conclusion, these data represents the first demonstration that MYT1L rs17039396 variants could indentified as a favorable prognostic indicator for gastric cancer, particularly among the cardia gastric cancer. Further validation in other larger studies with different ethnic populations and functional evaluations are needed.
Collapse
Affiliation(s)
- Yangmei Zhang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
- Department of Oncology, Xuzhou Central Hospital, Affiliated Xuzhou Hospital, College of Medicine, Southeast University, Xuzhou, Nanjing
| | - Haixia Zhu
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China
- Department of Genetic Toxicology, the Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xunlei Zhang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Dongying Gu
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xichang Zhou
- Department of Imaging and Nuclear Medicine, Affiliated Hospital of Qinghai University, Medical College of Qinghai University, XiNing, China
| | - Meilin Wang
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China
- Department of Genetic Toxicology, the Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Chunxiang Cao
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xiaojing Zhang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xiaomin Wu
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Weida Gong
- Department of Surgery, Yixing Cancer Hospital, Yixing, China
| | - Yongfei Tang
- Department of Surgery, Yixing People's Hospital, Yixing, China
| | - Jianwei Zhou
- Department of Molecular Cell Biology and Toxicology, School of Public Health, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Cuiju Tang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
- * E-mail: (CT); (ZZ); (JC)
| | - Zhengdong Zhang
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, Nanjing, China
- Department of Genetic Toxicology, the Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
- * E-mail: (CT); (ZZ); (JC)
| | - Jinfei Chen
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
- * E-mail: (CT); (ZZ); (JC)
| |
Collapse
|
37
|
Li WQ, Hu N, Wang Z, Yu K, Su H, Wang L, Wang C, Chanock SJ, Burdett L, Ding T, Qiao YL, Fan JH, Wang Y, Xu Y, Giffen C, Xiong X, Murphy G, Tucker MA, Dawsey SM, Freedman ND, Abnet CC, Goldstein AM, Taylor PR. Genetic variants in epidermal growth factor receptor pathway genes and risk of esophageal squamous cell carcinoma and gastric cancer in a Chinese population. PLoS One 2013; 8:e68999. [PMID: 23874846 PMCID: PMC3715462 DOI: 10.1371/journal.pone.0068999] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2013] [Accepted: 06/04/2013] [Indexed: 12/17/2022] Open
Abstract
The epidermal growth factor receptor (EGFR) signaling pathway regulates cell proliferation, differentiation, and survival, and is frequently dysregulated in esophageal and gastric cancers. Few studies have comprehensively examined the association between germline genetic variants in the EGFR pathway and risk of esophageal and gastric cancers. Based on a genome-wide association study in a Han Chinese population, we examined 3443 SNPs in 127 genes in the EGFR pathway for 1942 esophageal squamous cell carcinomas (ESCCs), 1758 gastric cancers (GCs), and 2111 controls. SNP-level analyses were conducted using logistic regression models. We applied the resampling-based adaptive rank truncated product approach to determine the gene- and pathway-level associations. The EGFR pathway was significantly associated with GC risk (P = 2.16×10(-3)). Gene-level analyses found 10 genes to be associated with GC, including FYN, MAPK8, MAP2K4, GNAI3, MAP2K1, TLN1, PRLR, PLCG2, RPS6KB2, and PIK3R3 (P<0.05). For ESCC, we did not observe a significant pathway-level association (P = 0.72), but gene-level analyses suggested associations between GNAI3, CHRNE, PAK4, WASL, and ITCH, and ESCC (P<0.05). Our data suggest an association between specific genes in the EGFR signaling pathway and risk of GC and ESCC. Further studies are warranted to validate these associations and to investigate underlying mechanisms.
Collapse
Affiliation(s)
- Wen-Qing Li
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Tuna G, Küçükhüseyin O, Arıkan S, Kaytan Sağlam E, Güler E, Cacına C, Oztop O, Turan S, Korkmaz G, Yaylım I. Do CDKN2 p16 540 C>G, CDKN2 p16 580 C>T, and MDM2 SNP309 T>G gene variants act on colorectal cancer development or progression? DNA Cell Biol 2013; 32:400-8. [PMID: 23777425 DOI: 10.1089/dna.2012.1933] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
CDNK2 p16 plays a pivotal role in G1/S transition by regulating the p53 pathway, which was regulated by a nuclear oncoprotein, mouse double minute 2 (MDM2). Overexpression of the MDM2 gene has been shown in a number of tumor types, its gene amplification is found to associate with accelerated tumor development and failure to treatment in both hereditary and sporadic cancers. Although genetic association studies have revealed the relationship between certain genetic polymorphisms and genes that play important roles in the development and progression of colorectal cancer (CRC), it is still unknown. Therefore, the polymorphisms of p16 540 C>G, 580 C>T, and MDM2 SNP309 T>G designed to investigate the risk of CRC development and progression in a Turkish population. We enrolled 87 patients with CRC and 75 healthy controls into the study. Genotypings were determined using polymerase chain reaction-restriction fragment length polymorphism techniques. Genotype distributions of p16 540 C>G and 580 C>T were found in agreement with the Hardy-Weinberg equilibrium in patients and controls. MDM2 SNP309 T>G was found in agreement with the Hardy-Weinberg equilibrium in controls, but not in patients. The results of our study, the G allele of p16 540 C>G and GG genotype of MDM2 SNP309 T>G were found significantly lower in patients compared with controls (p<0.001, p<0.05, respectively). Haplotype analyses have shown that the C allele of both the CDKN2 p16 540 C>G and 580 C>T variants together indicate a risk haplotype for the patient group; besides, carrying the G allele of p16 540 and G allele of MDM2 also seems a risk haplotype for the patient group. Our study is the first study that investigates the relationship among variants of CDKN2 p16 540 C>G, 580 C>T, and MDM2 SNP309 T>G risk of CRC and the development and progression in the Turkish population.
Collapse
Affiliation(s)
- Gülay Tuna
- Department of Molecular Medicine, The Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Chen T, Yi SH, Liu XY, Liu ZG. Meta-analysis of associations between the MDM2-T309G polymorphism and prostate cancer risk. Asian Pac J Cancer Prev 2013; 13:4327-30. [PMID: 23167337 DOI: 10.7314/apjcp.2012.13.9.4327] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The mouse double minute 2 (MDM2) gene plays a key role in the p53 pathway, and the SNP 309T/G single- nucleotide polymorphism in the promoter region of MDM2 has been shown to be associated with increased risk of cancer. However, no consistent results were found concerning the relationships between the polymorphism and prostate cancer risk. This meta-analysis, covering 4 independent case-control studies, was conducted to better understand the association between MDM2-SNP T309G and prostate cancer risk focusing on overall and subgroup aspects. The analysis revealed, no matter what kind of genetic model was used, no significant association between MDM2-SNP T309G and prostate cancer risk in overall analysis (GT/TT: OR = 0.84, 95%CI = 0.60-1.19; GG/TT: OR = 0.69, 95%CI = 0.43-1.11; dominant model: OR = 0.81, 95%CI= 0.58-1.13; recessive model: OR = 1.23, 95%CI = 0.95-1.59). In subgroup analysis, the polymorphism seemed more likely to be a protective factor in Europeans (GG/TT: OR = 0.52, 95%CI = 0.31-0.87; recessive model: OR = 0.58, 95%CI = 0.36-0.95) than in Asian populations, and a protective effect of the polymorphism was also seen in hospital-based studies in all models (GT/TT: OR = 0.74, 95%CI = 0.57-0.97; GG/TT: OR = 0.55, 95%CI = 0.38-0.79; dominant model: OR = 0.69, 95%CI = 0.54-0.89; recessive model: OR = 0.70, 95%CI = 0.51-0.97). However, more primary studies with a larger number of samples are required to confirm our findings.
Collapse
Affiliation(s)
- Tao Chen
- State Key Laboratory of Respiratory Disease for Allergy at Shengzhen University, School of Medicine, Shenzhen University, Shenzhen, Guangdong, China
| | | | | | | |
Collapse
|
40
|
Relationship Between MDM2 and p53 Alterations in Colorectal Cancer and Their Involvement and Prognostic Value in the Tunisian Population. Appl Immunohistochem Mol Morphol 2013; 21:228-36. [DOI: 10.1097/pai.0b013e31825f4e20] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
41
|
Pan X, Li Y, Feng J, Wang X, Hao B, Shi R, Zhang G. A functional polymorphism T309G in MDM2 gene promoter, intensified by Helicobacter pylori lipopolysaccharide, is associated with both an increased susceptibility and poor prognosis of gastric carcinoma in Chinese patients. BMC Cancer 2013; 13:126. [PMID: 23506213 PMCID: PMC3621260 DOI: 10.1186/1471-2407-13-126] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Accepted: 03/04/2013] [Indexed: 02/06/2023] Open
Abstract
Background Studies on the association between MDM2 SNP309 (T > G) and gastric cancer have reported conflicting results. Thus, the aim of this study was to investigate whether MDM2 SNP309 is associated with susceptibility and prognosis of gastric carcinoma in Chinese patients. Methods Total of 574 gastric carcinoma cases and 574 age- and sex-matched healthy controls were included. MDM2 polymorphism was detected by PCR- RFLP and infection of Helicobacter pylori (H. pylori) by a validated serology test. The functionality of MDM2 SNP309, with or without H. pylori lipopolysaccharide (LPS), was examined by dual-luciferase assay. Kaplan-Meier survival curves were used to evaluate survival. Additional, a meta-analysis was conducted to verity the findings. Results MDM2 SNP309G/G genotype was associated with an increased risk of gastric carcinoma when compared with T/T genotype or T carriers (both P < 0.01), and a joint effect between MDM2 SNP309G/G and H. pylori infection was observed to intensify gastric carcinoma risk. SNP309G/G was identified as an independent marker of poor overall survival of carcinoma. In vitro, the luciferase assay further showed an increased transcriptional activity of SNP309G allele compared with SNP309T allele, and the function of polymorphism T309G in MDM2 gene promoter was intensified by H. pylori LPS. Pooled results from the meta-analysis confirmed that SNP309G/G genotype had a significantly increased risk of gastric carcinoma compared with T/T genotype or T carriers, consistent with the case–control findings. Conclusions MDM2 SNP309G allele is associated with an increased risk and poor prognosis of gastric carcinoma in Chinese patients. Additional, there is a joint effect of MDM2 SNP309G/G allele and H. pylori infection on gastric carcinoma development, which may attribute to H. pylori LPS.
Collapse
Affiliation(s)
- Xiaolin Pan
- Department of Gastroenterology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | | | | | | | | | | | | |
Collapse
|
42
|
Qiu HB, Zhang LY, Ren C, Zeng ZL, Wu WJ, Luo HY, Zhou ZW, Xu RH. Targeting CDH17 suppresses tumor progression in gastric cancer by downregulating Wnt/β-catenin signaling. PLoS One 2013; 8:e56959. [PMID: 23554857 PMCID: PMC3598811 DOI: 10.1371/journal.pone.0056959] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/16/2013] [Indexed: 12/27/2022] Open
Abstract
PURPOSE Gastric cancer remains one of the leading causes of cancer death worldwide. Patients usually present late with local invasion or metastasis, for which there are no effective therapies available. Following previous studies that identified the adhesion molecule Cadherin-17(CDH17) as a potential marker for gastric carcinoma, we performed proof-of-principle studies to develop rational therapeutic approaches targeting CDH17 for treating this disease. METHODS Immunohistochemistry was used to study the expression of CDH17 in 156 gastric carcinomas, and the relationship between survival and CDH17 expression was studied by multivariate analyses. The effect of RNA interference-mediated knockdown of CDH17 on proliferation of gastric carcinoma cell lines was examined in vitro and in vivo, as well as the effects on downstream signaling by immunoblotting. RESULTS CDH17 was consistently up-regulated in human gastric cancers, and overall survival in patients with CDH17 upregulation was poorer than in those without expression of this gene (5 yrs overall survival rate 29.0% vs. 45.0%, P<0.01). Functional assays demonstrated that CDH17 knockdown inhibited cell proliferation, adhesion, migration, invasion, clonogenicity and induce G0/G1 arrest. In mice, shRNA-mediated CDH17 knockdown markedly inhibits tumor growth; intratumoral injection of CDH17 shRNAs results in significant antitumor effects on transplanted tumor models. The antitumor mechanisms underlying CDH17 inhibition involve inactivation of Wnt/β-catenin signaling. CONCLUSION Our results identify CDH17 as a biomarker of gastric carcinoma and attractive therapeutic target for this aggressive malignancy.
Collapse
Affiliation(s)
- Hai-bo Qiu
- State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Gastric and Pancreatic Surgery, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
- Division of Surgical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Li-yi Zhang
- Department of Clinical Oncology, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Chao Ren
- State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
| | - Zhao-lei Zeng
- State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
| | - Wen-jing Wu
- State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
| | - Hui-yan Luo
- State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
| | - Zhi-wei Zhou
- State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
- Department of Gastric and Pancreatic Surgery, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
| | - Rui-hua Xu
- State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China
- * E-mail:
| |
Collapse
|
43
|
Ye Y, Li X, Yang J, Miao S, Wang S, Chen Y, Xia X, Wu X, Zhang J, Zhou Y, He S, Tan Y, Qiang F, Li G, Røe OD, Zhou J. MDM2 is a useful prognostic biomarker for resectable gastric cancer. Cancer Sci 2013; 104:590-8. [PMID: 23347235 DOI: 10.1111/cas.12111] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/12/2013] [Accepted: 01/20/2013] [Indexed: 12/18/2022] Open
Abstract
Expression of MDM2 protein appears to be increased in malignancy and correlated to prognosis of tumors, but its role in gastric cancer remains controversial. Our recent investigations indicated that JWA was a novel candidate biomarker for gastric cancer. To evaluate the impact of MDM2 protein expression alone, and in combination with JWA, on the prognostic and predictive of patients with resectable gastric cancer, expression of MDM2 and JWA were examined by immunohistochemistry in three large cohorts (total n = 1131) of patient with gastric cancer. We found that MDM2 protein levels were significantly upregulated in gastric cancer (70.4%, 57 of 81) compared with adjacent non-cancerous tissues. High tumoral MDM2 expression significantly correlated with clinicopathologic characteristics, as well as with shorter overall survival (OS; P < 0.001 for all cohorts) in patients without adjuvant treatment. The effect of adjuvant fluorouracil-leucovorin-oxaliplatin (FLO) in improving OS compared with surgery alone was evident only in the high MDM2 group (hazard ratio = 0.57; 95% confidence interval, 0.37-0.89; P = 0.013). Furthermore, knockdown of MDM2 and overexpression of JWA had a synergistic effect on suppression of gastric cancer cell proliferation and migration. Patients with low MDM2 and high JWA expression had a better outcome of survival compared with the other groups (P < 0.001 for all cohorts). For the first time, our data suggest that MDM2 is a potent prognostic and predictive factor for benefit from adjuvant fluorouracil-leucovorin-oxaliplatin chemotherapy in resectable gastric cancer. The combination of MDM2 expression and JWA could serve as a more effective candidate prognostic biomarker for gastric cancer.
Collapse
Affiliation(s)
- Yang Ye
- Department of Molecular Cell Biology and Toxicology, Cancer Center, School of Public Health, Nanjing Medical University, Nanjing, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
MDM2 SNP309 rs2279744 polymorphism and gastric cancer risk: a meta-analysis. PLoS One 2013; 8:e56918. [PMID: 23451111 PMCID: PMC3581579 DOI: 10.1371/journal.pone.0056918] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 01/15/2013] [Indexed: 01/28/2023] Open
Abstract
Background MDM2 is a major negative regulator of p53, and a single nucleotide polymorphism (SNP) in the MDM2 promoter region SNP309 has been demonstrated to be associated with an increased MDM2 expression and a significantly earlier age of onset of several tumors, including gastric cancer. Several studies were published to evaluate the association between SNP309 and gastric cancer risk. However, the results remain conflicting rather than conclusive. Objective The aim of this study was to assess the association between the MDM2 SNP309 polymorphism and gastric risk. Methods We performed a meta-analysis to investigate this relationship. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the strength of the association. The pooled ORs were performed for codominant model, dominant model, and recessive model, respectively. Results Five published case-control studies, including 1,621 gastric cancer cases and 2,639 controls were identified. We found that the MDM2 SNP309 polymorphism was associated with a significantly increased risk of gastric cancer risk when all studies were pooled into the meta-analysis (GG versus TT, OR = 1.54; 95%CI = 1.04–2.29, and GG versus GT/TT, OR = 1.49, 95%CI = 1.30–1.72). Furthermore, Egger's test did not show any evidence of publication bias (P = 0.799 for GG versus TT). Conclusion Our results suggest that the MDM2 SNP309 polymorphism may be a low-penetrant risk factor for the development of gastric cancer.
Collapse
|
45
|
Wang S, Chen L, Zhao Q, Rong H, Wang M, Gong W, Zhou J, Wu D, Zhang Z. Effect of TP53 codon 72 and MDM2 SNP309 polymorphisms on survival of gastric cancer among patients who receiving 5-fluorouracil-based postoperative adjuvant chemotherapy. Cancer Chemother Pharmacol 2013; 71:1073-82. [PMID: 23423487 DOI: 10.1007/s00280-013-2103-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 01/24/2013] [Indexed: 12/17/2022]
Abstract
PURPOSE Several studies have examined the prognostic value of the TP53 Arg72Pro polymorphism (rs1042522) and/or MDM2 SNP309 (rs2279744) in multiple tumors. Our aim was to determine whether these two genetic variants were correlated with clinical outcome of gastric cancer. METHODS We genotyped the two SNPs, TP53 codon 72 polymorphism and MDM2 SNP309, in 940 gastric cancer patients with complete follow-up information and analyzed the correlation between the SNPs and gastric cancer survival. RESULTS The two SNPs were not significantly associated with gastric cancer survival. However, the TP53 codon 72 polymorphism had a prominent correlation with clinical outcome of patients receiving 5-fluorouracil (5-Fu)-based postoperative chemotherapy [Arg/Arg + Arg/Pro vs. Pro/Pro, adjusted hazard ratio (HR) = 1.63, 95 % confidence interval (CI) = 1.08-2.44]. Moreover, the unfavorable effect of Arg allele on survival outcome was more predominant for subgroups of older (age >60 years), male, intestinal histology type, advanced stage (T3/T4), and none metastasis of lymph node (N0) or distant (M0) (adjusted HR = 2.34, 95 % CI = 1.24-4.44 for age >60 years; 1.72, 1.10-2.69 for male; 2.30, 1.10-4.80 for intestinal; 1.62, 1.01-2.59 for T3/T4; 3.42, 1.26-9.24 for N0; and 1.62, 1.06-2.47 for M0). Among multiple chemotherapy regimens, the association was only significant in the subgroup of 5-Fu/calcium folinate plus oxaliplatin (FOLFOX) chemotherapy regimen (adjusted HR = 4.47, 95 % CI = 1.21-16.55). CONCLUSIONS Our findings showed that TP53 codon 72 polymorphism was associated with survival of gastric cancer patients treated with 5-Fu-based postoperative chemotherapy. The codon 72 polymorphism may be a potential prognostic factor.
Collapse
Affiliation(s)
- Shizhi Wang
- Department of Environmental Genomics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Cancer Center, Nanjing Medical University, 818 East Tianyuan Road, Nanjing 211166, China
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Olsson H, Hultman P, Rosell J, Söderkvist P, Jahnson S. MDM2 SNP309 promoter polymorphism and p53 mutations in urinary bladder carcinoma stage T1. BMC Urol 2013; 13:5. [PMID: 23356517 PMCID: PMC3574032 DOI: 10.1186/1471-2490-13-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Accepted: 01/16/2013] [Indexed: 12/28/2022] Open
Abstract
Background Urinary bladder carcinoma stage T1 is an unpredictable disease that in some cases has a good prognosis with only local or no recurrence, but in others can appear as a more aggressive tumor with progression to more advanced stages. The aim here was to investigate stage T1 tumors regarding MDM2 promoter SNP309 polymorphism, mutations in the p53 gene, and expression of p53 and p16 measured by immunohistochemistry, and subsequently relate these changes to tumor recurrence and progression. We examined a cohort of patients with primary stage T1 urothelial carcinoma of the bladder and their tumors. Methods After re-evaluation of the original slides and exclusions, the study population comprised 141 patients, all with primary stage T1 urothelial carcinoma of the bladder. The hospital records were screened for clinical parameters and information concerning presence of histologically proven recurrence and progression. The paraffin-embedded tumor material was evaluated by immunohistochemistry. Any mutations found in the p53 gene were studied by single-strand conformation analysis and Sanger sequencing. The MDM2 SNP309 polymorphism was investigated by pyrosequencing. Multivariate analyses concerning association with prognosis were performed, and Kaplan-Meier analysis was conducted for a combination of changes and time to progression. Results Of the 141 patients, 82 had at least one MDM2 SNP309 G allele, and 53 had a mutation in the p53 gene, but neither of those anomalies was associated with a worse prognosis. A mutation in the p53 gene was associated with immunohistochemically visualized p53 protein expression at a cut-off value of 50%. In the group with p53 mutation Kaplan-Meier analysis showed higher rate of progression and shorter time to progression in patients with immunohistochemically abnormal p16 expression compared to them with normal p16 expression (p = 0.038). Conclusions MDM2 SNP309 promoter polymorphism and mutations in p53 were not associated with worse prognosis in this cohort of patients with primary stage T1 urinary bladder carcinoma. However, patients with abnormal p16 expression and a mutated p53 gene had a higher rate of and a shorter time to progression, and p53 gene mutation was associated with an abnormal immunohistochemistry for p53 at a cut-off of 50%.
Collapse
Affiliation(s)
- Hans Olsson
- Molecular and Immunological Pathology, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Department of Clinical Pathology and Clinical Genetics, Östergötland County Council, Linköping, Sweden.
| | | | | | | | | |
Collapse
|
47
|
Balatti V, Pekarky Y, Rizzotto L, Croce CM. miR deregulation in CLL. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 792:309-25. [PMID: 24014303 DOI: 10.1007/978-1-4614-8051-8_14] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
B-cell chronic lymphocytic leukemia (CLL) is the most frequent human leukemia and it occurs in two forms, indolent and aggressive. Although clinical features and genetic abnormalities in CLL are well documented, molecular details underlying the disease are still under investigation.MicroRNAs are small noncoding RNAs involved in a variety of cellular processes and expressed in a tissue-specific manner. MicroRNAs have the ability to regulate gene expression. In physiological conditions, microRNAs act as gene expression controllers by targeting the mRNA or inhibiting its translation. Their deregulation can lead to an alteration of the expression level of many genes which can induce the development or promote the progression of tumors.In CLL, microRNAs can function as oncogenes, tumor suppressor genes, and/or can be used as markers for disease onset/progression. For example, in indolent CLL, 13q14 deletions targeting miR-15/16 initiate the disease, while in aggressive CLL miR-181 targets the critical TCL1 oncogene and can also be used as a progression marker.Here we discuss the foremost findings about the role of microRNAs in CLL pathogenesis, and how this knowledge can be used to identify new approaches to treat CLL.
Collapse
Affiliation(s)
- Veronica Balatti
- Department of Molecular Virology, Immunology and Medical Genetics, Comprehensive Cancer Center and the Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | | | | | | |
Collapse
|
48
|
Singhal P, Hussain S, Thakur N, Batra S, Salhan S, Bhambani S, Bharadwaj M. Association ofMDM2andp53Polymorphisms with the Advancement of Cervical Carcinoma. DNA Cell Biol 2013; 32:19-27. [PMID: 23210739 DOI: 10.1089/dna.2012.1718] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Pallavi Singhal
- Divison of Molecular Genetics & Biochemistry, Institute of Cytology & Preventive Oncology (ICMR), Noida, India
| | - Showket Hussain
- Divison of Molecular Genetics & Biochemistry, Institute of Cytology & Preventive Oncology (ICMR), Noida, India
| | - Nisha Thakur
- Divison of Molecular Genetics & Biochemistry, Institute of Cytology & Preventive Oncology (ICMR), Noida, India
| | - Swaraj Batra
- Department of Obstetrics & Gynecology, LNJP Hospital, New Delhi, India
| | - Sudha Salhan
- Department of Obstetrics & Gynecology, Safdarjung Hospital, New Delhi, India
| | - Suresh Bhambani
- Division of Cytopathology, Institute of Cytology Preventive Oncology (ICMR), Noida, India
| | - Mausumi Bharadwaj
- Divison of Molecular Genetics & Biochemistry, Institute of Cytology & Preventive Oncology (ICMR), Noida, India
| |
Collapse
|
49
|
DNMT3A rs36012910 A>G polymorphism and gastric cancer susceptibility in a Chinese population. Mol Biol Rep 2012; 39:10949-55. [PMID: 23053986 DOI: 10.1007/s11033-012-1996-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 10/01/2012] [Indexed: 10/27/2022]
Abstract
DNA-methyltransferase (DNMT)-3A plays a crucial role in embryonic development and aberrant DNA methylation in carcinogenesis. Polymorphisms of the DNMT3A gene may influence its enzymatic activity and its contribution to susceptibility to cancer. This study evaluated the association of DNMT3A rs36012910 A>G with susceptibility to gastric cancer (GC) in a Chinese population. Genomic DNA was extracted from samples taken from 340 patients with GC and 251 healthy control subjects. The genotype frequency of DNMT3A rs36012910 A>G in all subjects was detected by polymerase chain reaction-restriction fragment length polymorphism and confirmed by sequencing. Stratification analyses were used to study subgroups by age and gender and to evaluate the association of rs36012910 A>G polymorphism with genetic susceptibility to GC. All patients and control individuals were successfully genotyped for the DNMT3A rs36012910 A>G polymorphism. The frequency of DNMT3A rs36012910 allele G is 3.39 % in healthy individuals and 7.78 % in GC patients, respectively. The rs36012910 AG genotype was significantly more common in the GC group than in the controls, although the rs36012910 GG genotype was only one case in GC patients. Further stratification indicated that AG+GG genotypes were associated with susceptibility to GC in males older than 60, but this polymorphism has no significant association with GC susceptibility in females. Male individuals who carried AG+GG genotypes had a 2.362-fold increased risk of GC compared to those who carried the AA genotype. The rs36012910 allele G was associated with an increased risk of GC compared to the rs36012910 allele A. This is the first report to investigate the distribution and evaluate the association of a rare SNP in DNMT3A with genetic susceptibility to GC. DNMT3A rs36012910 A>G might become a potential biomarker for use in GC prediction, although further studies in larger groups and different populations are needed for confirmation.
Collapse
|
50
|
HE WENWU, LONG JIANXIONG, XIAN LEI, PANG FENG, SU LI, WEI SHIXIU, WEI BO, HU YANLING. MDM2 SNP309 polymorphism is associated with lung cancer risk in women: A meta-analysis using METAGEN. Exp Ther Med 2012; 4:569-576. [PMID: 23170107 PMCID: PMC3501375 DOI: 10.3892/etm.2012.640] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 06/15/2012] [Indexed: 12/23/2022] Open
Abstract
Lung cancer is the most common diagnosed malignancy and the leading cause of cancer-related mortality worldwide. Murine double minute 2 (MDM2) SNP309 polymorphisms have been reported to influence the risk of lung cancer. However, the published studies together with four subsequent meta-analyses have yielded contradictory results. To examine this inconsistency, we conducted a meta-analysis of 6,696 lung cancer cases and 7,972 controls from eight published case-control studies using METAGEN. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated with STATA software and used to assess the strength of the association. In the overall analysis, a significant association between MDM2 SNP309 polymorphism and lung cancer risk was observed (OR, 1.143; 95% CI, 1.047-1.247). Moreover, stratified by ethnicity, a significant association was found in Asians (OR, 1.260; 95% CI, 1.111-1.429), but not in Europeans. Subgroup analysis of gender, histology and smoking status suggested that the MDM2 SNP309 genotype was associated with increased lung cancer risk in women (OR, 1.282; 95% CI, 1.062-1.548) and never smokers (OR, 1.328; 95% CI, 1.119-1.575). No statistically significant association was observed in males and ever smoking population, and no association was found in subgroup analysis based on histology. In conclusion, the association between MDM2 SNP309 and lung cancer was statistically significant, particularly in Asians, women and never smoking population.
Collapse
Affiliation(s)
- WENWU HE
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi
| | | | - LEI XIAN
- Department of Cardiothoracic Surgery, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi
| | - FENG PANG
- Fourth Grade of Clinical Medicine and
| | | | - SHIXIU WEI
- Medical Research Center, Guangxi Medical University, Nanning, Guangxi,
P.R. China
| | | | - YANLING HU
- Medical Research Center, Guangxi Medical University, Nanning, Guangxi,
P.R. China
| |
Collapse
|