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Li N, Xie C, Lu NH. p53, a potential predictor of Helicobacter pylori infection-associated gastric carcinogenesis? Oncotarget 2018; 7:66276-66286. [PMID: 27556187 PMCID: PMC5323233 DOI: 10.18632/oncotarget.11414] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 08/13/2016] [Indexed: 12/14/2022] Open
Abstract
Helicobacter pylori (H. pylori) is an ancient and persistent inhabitant of the human stomach that is closely linked to the development of gastric cancer (GC). . Emerging evidence suggests that H. pylori strain interactions with gastric epithelial cells subvert the best- characterized p53 tumour suppressor pathway. A high prevalence of p53 mutations is related to H. pylori infection. H. pylori also accelerates p53 protein degradation by disturbing the MDM2-P53 feedback loop. Additionally, H. pylori triggers the alteration of other p53 isoforms. Dysregulation of p53 by H. pylori infection contributes to gastric carcinogenesis by mediating cell proliferation and apoptosis. This review focuses on the regulation of p53 in H. pylori infection-associated GC.
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Affiliation(s)
- Nianshuang Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Chuan Xie
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Nong-Hua Lu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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2
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Zhang X, Zeng B, Wen C, Zheng S, Chen H, She F. YWHAE is a novel interaction partner of Helicobacter pylori CagA. FEMS Microbiol Lett 2017; 365:4587735. [DOI: 10.1093/femsle/fnx231] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/01/2017] [Indexed: 12/12/2022] Open
Affiliation(s)
- Xiaoyan Zhang
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
- Fujian Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
| | - Bangwei Zeng
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
- Fujian Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
- Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, Fujian Province 350001, PR China
| | - Chunyan Wen
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
- Fujian Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
| | - Shurong Zheng
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
- Fujian Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
| | - Hao Chen
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
- Fujian Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
| | - Feifei She
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
- Fujian Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, 1 Xuefu North Road, University Town, Fuzhou, Fujian Province 350122, PR China
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Lu K, Rui G, Liu F, Yang L, Deng X, Shi S, Li Q. 14-3-3ε is a nuclear matrix protein, and its altered expression and localization are associated with curcumin-induced apoptosis of MG-63 cells. Oncol Lett 2017; 15:338-346. [PMID: 29285195 PMCID: PMC5738701 DOI: 10.3892/ol.2017.7283] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 09/13/2017] [Indexed: 12/18/2022] Open
Abstract
The 14-3-3 protein family may regulates protein interaction, transportation and cellular localization. The regulatory role of 14-3-3ε is influenced by its altered localization. In the present study, human osteosarcoma MG-63 cells were treated with curcumin to induce apoptosis. Subsequently, the altered expression and localization of 14-3-3ε and its co-localization with other apoptosis-associated proteins during apoptosis was investigated. Analysis of nuclear matrix proteins (NMPs), using two-dimensional gel electrophoresis with matrix-assisted laser-desorption/ionization time-of-flight mass spectrometry, revealed that 14-3-3ε existed on the nuclear matrix of MG-63 cells, and its expression was decreased compared with that in control cells following curcumin treatment. In addition, western blot analysis validated that the expression level of 14-3-3ε was downregulated during curcumin-induced apoptosis of MG-63 cells compared with that in control cells. Using immunofluorescence labeling, it was observed that 14-3-3ε was located on the nuclear matrix of MG-63 cells and the distribution of 14-3-3ε on the nuclear matrix was decreased following treatment with curcumin, compared with that in control cells. Double immunofluorescence staining and laser-scanning confocal microscopy demonstrated that 14-3-3ε was co-localized with B-cell lymphoma-2 (Bcl-2), Bcl-2-associated-X protein, p53 and c-FOS transcription factor in MG-63 cells. Furthermore, following treatment with curcumin, these co-localization regions were decreased. The results of the present study revealed that 14-3-3ε is an NMP in MG-63 cells, and its altered expression and co-localization with apoptosis-associated proteins indicated an important function of 14-3-3ε in apoptosis of MG-63 cells. Additional studies are required to investigate the results of the present study.
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Affiliation(s)
- Kun Lu
- Department of Basic Medicine, Medical College of Xiamen University, Xiamen, Fujian 361102, P.R. China.,Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, P.R. China
| | - Gang Rui
- Department of Orthopedics, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Fan Liu
- Department of Basic Medicine, Medical College of Xiamen University, Xiamen, Fujian 361102, P.R. China.,Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, P.R. China
| | - Ling Yang
- Department of Basic Medicine, Medical College of Xiamen University, Xiamen, Fujian 361102, P.R. China.,Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, P.R. China
| | - Xiaoling Deng
- Department of Basic Medicine, Medical College of Xiamen University, Xiamen, Fujian 361102, P.R. China.,Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, P.R. China
| | - Songlin Shi
- Department of Basic Medicine, Medical College of Xiamen University, Xiamen, Fujian 361102, P.R. China.,Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, P.R. China
| | - Qifu Li
- Department of Basic Medicine, Medical College of Xiamen University, Xiamen, Fujian 361102, P.R. China.,Cancer Research Center of Xiamen University, Xiamen, Fujian 361102, P.R. China
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4
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Zhou ZR, Huang P, Song GH, Zhang Z, An K, Lu HW, Ju XL, Ding W. Comparative proteomic analysis of rats subjected to water immersion and restraint stress as an insight into gastric ulcers. Mol Med Rep 2017; 16:5425-5433. [PMID: 28849061 PMCID: PMC5647087 DOI: 10.3892/mmr.2017.7241] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 06/15/2017] [Indexed: 12/13/2022] Open
Abstract
In the present study, comparative proteomic analysis was performed in rats subjected to water immersion-restraint stress (WRS). A total of 26 proteins were differentially expressed and identified using matrix-assisted laser desorption/ionization time of flight mass spectrometry. Among the 26 differentially expressed protein spots identified, 13 proteins were significantly upregulated under WRS, including pyruvate kinase and calreticulin, which may be closely associated with energy metabolism. In addition, 12 proteins were downregulated under WRS, including hemoglobin subunit β-2 and keratin type II cytoskeletal 8, which may be important in protein metabolism and cell death. Gene Ontology analysis revealed the cellular distribution, molecular function and biological processes of the identified proteins. The mRNA levels of certain differentially expressed proteins were analyzed using fluorescence quantitative polymerase chain reaction analysis. The results of the present study aimed to offer insights into proteins, which are differentially expressed in gastric ulcers in stress, and provide theoretical evidence of a radical cure for gastric ulcers in humans.
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Affiliation(s)
- Zheng-Rong Zhou
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China
| | - Pan Huang
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China
| | - Guang-Hao Song
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China
| | - Zhuang Zhang
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China
| | - Ke An
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China
| | - Han-Wen Lu
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China
| | - Xiao-Li Ju
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China
| | - Wei Ding
- Department of Animal Husbandry and Veterinary Medicine, Jiangsu Polytechnic College of Agriculture and Forestry, Jurong, Jiangsu 212499, P.R. China
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Nagappan A, Venkatarame Gowda Saralamma V, Hong GE, Lee HJ, Shin SC, Kim EH, Lee WS, Kim GS. Proteomic analysis of selective cytotoxic anticancer properties of flavonoids isolated from Citrus platymamma on A549 human lung cancer cells. Mol Med Rep 2016; 14:3814-22. [PMID: 27573346 DOI: 10.3892/mmr.2016.5666] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 06/29/2016] [Indexed: 11/05/2022] Open
Abstract
Citrus platymamma Hort. ex Tanaka (Byungkyul in Korean) has been used in Korean folk medicine for the treatment of inflammatory disorders and cancer. However, the molecular mechanism underlying the anticancer properties of flavonoids isolated from C. platymamma (FCP) remains to be elucidated. Therefore, the present study attempted to identify the key proteins, which may be important in the anticancer effects of FCP on A549 cells using a proteomic approach. FCP showed a potent cytotoxic effect on the A549 human lung cancer cells, however, it had no effect on WI‑38 human fetal lung fibroblasts at the same concentrations. Furthermore, 15 differentially expressed protein spots (spot intensities ≥2‑fold change; P<0.05) were obtained from comparative proteome analysis of two‑dimensional gel electrophoresis maps of the control (untreated) and FCP‑treated A549 cells. Finally, eight differentially expressed proteins, one of which was upregulated and seven of which were downregulated, were successfully identified using matrix‑assisted laser desorption/ionization time‑of‑flight/time‑of‑flight tandem mass spectrometry and peptide mass fingerprinting analysis. Specifically, proteins involved in signal transduction were significantly downregulated, including annexin A1 (ANXA1) and ANXA4, whereas 14‑3‑3ε was upregulated. Cytoskeletal proteins, including cofilin‑1 (CFL1), cytokeratin 8 (KRT8) and KRT79, and molecular chaperones/heat shock proteins, including endoplasmin, were downregulated. Proteins involved in protein metabolism, namely elongation factor Ts were also downregulated. Consistent with results of the proteome analysis, the immunoblotting results showed that 14‑3‑3ε was upregulated, whereas CFL1, ANXA4 and KRT8 were downregulated in the FCP‑treated A549 cells. The majority of the proteins were involved in tumor growth, cell cycle, apoptosis, migration and signal transduction. These findings provide novel insights into the molecular mechanisms underlying FCP-induced anticancer effects on A549 cells.
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Affiliation(s)
- Arulkumar Nagappan
- Department of Internal Medicine, Institute of Health Sciences and Gyeongnam Regional Cancer Center, Gyeongsang National University School of Medicine, Jinju, Gyeongnam 660‑702, Republic of Korea
| | - Venu Venkatarame Gowda Saralamma
- Research Institute of Life Science and College of Veterinary Medicine (BK21 Plus Project), Gyeongsang National University, Jinju, Gyeongnam 660‑701, Republic of Korea
| | - Gyeong Eun Hong
- Research Institute of Life Science and College of Veterinary Medicine (BK21 Plus Project), Gyeongsang National University, Jinju, Gyeongnam 660‑701, Republic of Korea
| | - Ho Jeong Lee
- Research Institute of Life Science and College of Veterinary Medicine (BK21 Plus Project), Gyeongsang National University, Jinju, Gyeongnam 660‑701, Republic of Korea
| | - Sung Chul Shin
- Department of Chemistry, Research Institute of Life Science, Gyeongsang National University, Jinju, Gyeongnam 660‑701, Republic of Korea
| | - Eun Hee Kim
- Department of Nursing Science, International University of Korea, Jinju, Gyeongnam 660‑759, Republic of Korea
| | - Won Sup Lee
- Department of Internal Medicine, Institute of Health Sciences and Gyeongnam Regional Cancer Center, Gyeongsang National University School of Medicine, Jinju, Gyeongnam 660‑702, Republic of Korea
| | - Gon Sup Kim
- Research Institute of Life Science and College of Veterinary Medicine (BK21 Plus Project), Gyeongsang National University, Jinju, Gyeongnam 660‑701, Republic of Korea
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6
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Abstract
p53 tumor suppressor has been identified as a protein interacting with the large T antigen produced by simian vacuolating virus 40 (SV40). Subsequent research on p53 inhibition by SV40 and other tumor viruses has not only helped to gain a better understanding of viral biology, but also shaped our knowledge of human tumorigenesis. Recent studies have found, however, that inhibition of p53 is not strictly in the realm of viruses. Some bacterial pathogens also actively inhibit p53 protein and induce its degradation, resulting in alteration of cellular stress responses. This phenomenon was initially characterized in gastric epithelial cells infected with Helicobacter pylori, a bacterial pathogen that commonly infects the human stomach and is strongly linked to gastric cancer. Besides H. pylori, a number of other bacterial species were recently discovered to inhibit p53. These findings provide novel insights into host–bacteria interactions and tumorigenesis associated with bacterial infections. This review focuses on a novel aspect of host–bacteria interactions: the direct interplay between bacterial pathogens and tumor suppression mechanisms that protect the host from cancer development. Recent studies revealed that various pathogenic bacteria actively inhibit the major tumor suppression pathway mediated by p53 protein that plays a key role in the regulation of multiple cellular stress responses and prevention of cancerogenesis. Bacterial degradation of p53 was first discovered in the context of Helicobacter pylori infection, which is currently the strongest known risk factor for adenocarcinoma of the stomach. This phenomenon, however, is not limited to H. pylori, and many other bacterial pathogens inhibit p53 using various mechanisms. Inhibition of p53 by bacteria is linked to bacterial modulation of the host cellular responses to DNA damage, metabolic stress, and, potentially, other stressors. This is a dynamic area of research that will continue to evolve and make important contributions to a better understanding of host–microbe interactions and tumorigenesis. These studies may offer new molecular targets and opportunities for drug development.
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Affiliation(s)
- Alexander I. Zaika
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, United States of America
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- * E-mail:
| | - Jinxiong Wei
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, United States of America
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Jennifer M. Noto
- Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Tennessee, United States of America
| | - Richard M. Peek
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Tennessee, United States of America
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