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Liu J, Zhang B, Zhang Y, Zhao H, Chen X, Zhong L, Shang D. Oxidative stress and autophagy-mediated immune patterns and tumor microenvironment infiltration characterization in gastric cancer. Aging (Albany NY) 2023; 15:12513-12536. [PMID: 37950729 PMCID: PMC10683600 DOI: 10.18632/aging.205194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 10/04/2023] [Indexed: 11/13/2023]
Abstract
Recent years have seen a sharp rise in the amount of research on the connection between oxidative stress, autophagy, and cancer cells. However, the significant functions of oxidative stress and autophagy-related genes (OARGs) in gastric cancer (GC) are yet to be investigated integrally. Therefore, it will be a new and promising concept to search for novel OARG-related biomarkers to predict the prognosis and treatment response of GC. First, we assessed changes in prognosis and tumor microenvironment (TME) characteristics across the various oxidative stress and autophagy-related modification patterns based on a detailed analysis of 17 OARGs with prognostic significance of 808 GC samples. We identified three distinct OARG alteration patterns which displayed unique biological characteristics and immune cell infiltration features. Using principal component analysis methods, the OARGscore was developed to evaluate the OARG modification patterns of certain tumors. The negative connection between OARGscore and immune cells was statistically significant. Increased survival, a higher incidence of mutations, and a better response to immunotherapy were all predicted to be related to patients' high-OARGscore. In addition, the candidate chemotherapeutic drugs were predicted using the oncoPredict program. The low-OARGscore group was predicted to benefit more from Ribociclib, Alisertib, Niraparib, Epirubicin, Olaparib, and Axitinib, while patients in the high-OARGscore group were predicted to benefit more from Afatinib, Oxaliplatin, Paclitaxel, 5-Fluorouracil, Dabrafenib and Lapatinib. Our findings offer a specific method for predicting a patient's prognosis and susceptibility to immunotherapy, as well as a promising insight of oxidative stress and autophagy in GC.
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Affiliation(s)
- Jifeng Liu
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Biao Zhang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yunshu Zhang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Huahui Zhao
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xu Chen
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Lei Zhong
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Dong Shang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China
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Deng G, Sun H, Huang R, Pan H, Zuo Y, Zhao R, Du Z, Xue Y, Song H. An oxidative stress biomarkers predict prognosis in gastric cancer patients receiving immune checkpoint inhibitor. Front Oncol 2023; 13:1173266. [PMID: 37546387 PMCID: PMC10400353 DOI: 10.3389/fonc.2023.1173266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/03/2023] [Indexed: 08/08/2023] Open
Abstract
Objective The development and advance of gastric cancer are inextricably linked to oxidative and antioxidant imbalance. Although immunotherapy has been shown to be clinically effective, the link between oxidative stress and gastric cancer patients treated with immune checkpoint inhibitor (ICIs) remains unknown. This study aims at looking into the prognostic value of oxidative stress scores in gastric cancer patients treated with ICIs. Methods By taking the propagation to receiver operating characteristic (ROC) we got the best cut-off values, and divided 265 patients receiving ICIs and chemotherapy into high and low GC-Integrated Oxidative Stress Score (GIOSS) groups. We also used Kaplan-Meier and COX regression models to investigate the relationship between oxidative stress biomarkers and prognosis. Results Through both univariate and multivariate analyses, it's shown that GIOSS severs as an independent prognostic factor for progression-free survival (PFS) and Overall survival (OS). Based on GIOSS cutoff values, patients with high GIOSS levels, compared to those with low levels exhibited shorter PFS and OS, both in the high GIOSS group, which performed poorly in the ICIs subgroup and other subgroup analyses. Conclusion GIOSS is a biomarker that responds to systemic oxidative stress in the body and can predict prognosis in patients with gastric cancer who are taking ICIs. Additionally, it might come to medical professionals' aid in making more effective or more suitable treatment plans for gastric cancer.
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Integrated analysis identifies oxidative stress genes associated with progression and prognosis in gastric cancer. Sci Rep 2021; 11:3292. [PMID: 33558567 PMCID: PMC7870842 DOI: 10.1038/s41598-021-82976-w] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 01/27/2021] [Indexed: 12/25/2022] Open
Abstract
Oxidative stress (OS) reactions are reported to be associated with oncogenesis and tumor progression. However, little is known about the potential diagnostic value of OS in gastric cancer (GC). This study identified hub OS genes associated with the prognosis and progression of GC and illustrated the underlying mechanisms. The transcriptome data and corresponding GC clinical information were collected from The Cancer Genome Atlas (TCGA) database. Aberrantly expressed OS genes between tumors and adjacent normal tissues were screened, and 11 prognosis-associated genes were identified with a series of bioinformatic analyses and used to construct a prognostic model. These genes were validated in the Gene Expression Omnibus (GEO) database. Furthermore, weighted gene co-expression network analysis (WGCNA) was subsequently conducted to identify the most significant hub genes for the prediction of GC progression. Analysis revealed that a good prognostic model was constructed with a better diagnostic accuracy than other clinicopathological characteristics in both TCGA and GEO cohorts. The model was also significantly associated with the overall survival of patients with GC. Meanwhile, a nomogram based on the risk score was established, which displayed a favorable discriminating ability for GC. In the WGCNA analysis, 13 progression-associated hub OS genes were identified that were also significantly associated with the progression of GC. Furthermore, functional and gene ontology (GO) analyses were performed to reveal potential pathways enriched with these genes. These results provide novel insights into the potential applications of OS-associated genes in patients with GC.
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Yang SJ, Huang CH, Yang JC, Wang CH, Shieh MJ. Residence Time-Extended Nanoparticles by Magnetic Field Improve the Eradication Efficiency of Helicobacter pylori. ACS APPLIED MATERIALS & INTERFACES 2020; 12:54316-54327. [PMID: 33236884 DOI: 10.1021/acsami.0c13101] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Helicobacter pylori infection is one of the leading causes of several gastroduodenal diseases, such as gastritis, peptic ulcer, and gastric cancer. In fact, H. pylori eradication provides a preventive effect against the incidence of gastric cancer. Amoxicillin is a commonly used antibiotic for H. pylori eradication. However, due to its easy degradation by gastric acid, it is necessary to administer it in a large dosage and to combine it with other antibiotics. This complexity and the strong side effects of H. pylori eradication therapy often lead to treatment failure. In this study, the chitosan/poly (acrylic acid) particles co-loaded with superparamagnetic iron oxide nanoparticles and amoxicillin (SPIO/AMO@PAA/CHI) are used as drug nano-carriers for H. pylori eradication therapy. In vitro and in vivo results show that the designed SPIO/AMO@PAA/CHI nanoparticles are biocompatible and could retain the biofilm inhibition and the bactericidal effect of amoxicillin against H. pylori. Moreover, the mucoadhesive property of chitosan allows SPIO/AMO@PAA/CHI nanoparticles to adhere to the gastric mucus layer and rapidly pass through the mucus layer after exposure to a magnetic field. When PAA is added, it competes with amoxicillin for chitosan, so that amoxicillin is quickly and continuously released between the mucus layer and the gastric epithelium and directly acts on H. pylori. Consequently, the use of this nano-carrier can extend the drug residence time in the stomach, reducing the drug dose and treatment period of H. pylori eradication therapy.
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Affiliation(s)
- Shu-Jyuan Yang
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, No. 1, Section 1, Jen-Ai Road, Taipei 100, Taiwan
| | - Chung-Huan Huang
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, No. 1, Section 1, Jen-Ai Road, Taipei 100, Taiwan
| | - Jyh-Chin Yang
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, No. 7, Chung-Shan South Road, Taipei 100, Taiwan
| | - Chung-Hao Wang
- Gene'e Tech Co. Ltd. 2F., No. 661, Bannan Road, Zhonghe District, New Taipei City 235, Taiwan
| | - Ming-Jium Shieh
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, No. 1, Section 1, Jen-Ai Road, Taipei 100, Taiwan
- Department of Oncology, National Taiwan University Hospital and College of Medicine, No. 7, Chung-Shan South Road, Taipei 100, Taiwan
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Li J, Zhu Y, Zhou Y, Jiang H, Chen Z, Lu B, Shen X. The SELS rs34713741 Polymorphism Is Associated with Susceptibility to Colorectal Cancer and Gastric Cancer: A Meta-Analysis. Genet Test Mol Biomarkers 2020; 24:835-844. [PMID: 33290140 DOI: 10.1089/gtmb.2020.0099] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Aims: The selenoprotein S (SELS) gene has been suggested to be an important factor in the development of multiple diseases, including gastric cancer (GC) and colorectal cancer (CRC). However, the association between the SELS gene rs34713741 polymorphism and risk of GC and CRC is inconclusive. Thus, we aimed to investigate the relationship between this polymorphism and the susceptibility to GC and CRC through a meta-analysis. Materials and Methods: Literature was retrieved through the following electronic databases: PubMed, Embase, Web of Science, and Chinese National Knowledge Infrastructure. The pooled odds ratio (OR) and 95% confidence interval (CI) were used to assess the strength of the associations of the alleles of rs4713741 locus with the risk of CRC and GC. Results: Seven studies that collectively included 2331 cases and 2233 controls were utilized for this meta-analysis. Under the allelic and dominant models, the T allele of the SELS rs34713741 polymorphism was significantly associated with CRC risk (allelic model: OR = 1.20, 95% CI = 1.08-1.33, p = 0.0004; dominant model: OR = 1.25, 95% CI = 1.10-1.43, p = 0.001). In addition, all of the genetic models (allelic, dominant, and recessive models) identified the rs34713741 T allele as being significantly associated with GC risk (allelic model: OR = 1.67, 95% CI = 1.30-2.15, p < 0.001; dominant model: OR = 1.70, 95% CI = 1.25-2.30, p = 0.0006; recessive model: OR = 2.39, 95% CI = 1.26-4.50, p = 0.007). Conclusions: The SELS gene rs34713741 T-allele is a highly probable risk factor for both CRC and GC. The results of this study will provide support for using this single nucleotide polymorphism in the diagnosis of GC and CRC.
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Affiliation(s)
- Jin Li
- Department of Gastroenterological Surgery, The Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - Yi Zhu
- Department of Gastroenterological Surgery, The Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - Yuan Zhou
- Department of Gastroenterological Surgery, The Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - HongGang Jiang
- Department of Gastroenterological Surgery, The Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - ZhiHeng Chen
- Department of Gastroenterological Surgery, The Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - BoHao Lu
- Department of Gastroenterological Surgery, The Affiliated Hospital of Jiaxing University, Zhejiang, China
| | - XuNing Shen
- Department of Gastroenterological Surgery, The Affiliated Hospital of Jiaxing University, Zhejiang, China
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Lee HJ, Park JM, Hahm KB. [Role of Inhibitory Transforming Growth Factor-β Signal Smad7 in Helicobacter pylori-associated Gastric Damage]. THE KOREAN JOURNAL OF GASTROENTEROLOGY 2017; 68:186-194. [PMID: 27780942 DOI: 10.4166/kjg.2016.68.4.186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background/Aims Transforming growth factor-beta (TGF-β) is a cytokine implicated in the susceptibility, development, and progression of gastrointestinal cancer and certain other neoplasms. In the later stages of cancer, TGF-β not only acts as a bystander of host-immune response, but also contributes to cell growth, invasion, and metastasis. In the current study, we generated gastric mucosal cells that stably express Smad7, and explored the Helicobacter pylori-associated biological changes between mock-transfected and Smad7-transfected RGM1 cells. Methods RGM1 cells stably transfected with Smad7 were infected with H. pylori, and molecular changes in apoptotic markers and inflammatory mediators were examined. Several candidate genes were explored in Smad7-overexpressing cells after H. pylori infection. Results Overexpression of Smad7 in RGM1 cells significantly increased the H. pylori-induced cytotoxicity compared to mock-transfected cells. Exaggerated increases in inflammatory mediators, cyclooxygenase 2, inducible NO synthase, and augmented apoptosis were noted in Smad7-overexpressing cells, whereas mitigated heme oxygenase 1 was noted in Smad7- overexpressing cells. These phenomena were reversed in cells transfected with Smad7 siRNA. Conclusions These data suggest that inhibition of Smad7 is a possible target for mitigating H. pylori-associated inflammation.
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Affiliation(s)
- Ho Jae Lee
- Department of Biochemistry, Gachon University School of Medicine, Incheon, Korea
| | - Jong Min Park
- CHA Cancer Prevention Research Center, CHA Bio Complex, CHA University, Seongnam, Korea
| | - Ki Baik Hahm
- CHA Cancer Prevention Research Center, CHA Bio Complex, CHA University, Seongnam, Korea.,Digestive Disease Center, CHA Bundang Medical Center, Seongnam, Korea
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Montalvo-Javé EE, Olguín-Martínez M, Hernández-Espinosa DR, Sánchez-Sevilla L, Mendieta-Condado E, Contreras-Zentella ML, Oñate-Ocaña LF, Escalante-Tatersfield T, Echegaray-Donde A, Ruiz-Molina JM, Herrera MF, Morán J, Hernández-Muñoz R. Role of NADPH oxidases in inducing a selective increase of oxidant stress and cyclin D1 and checkpoint 1 over-expression during progression to human gastric adenocarcinoma. Eur J Cancer 2016; 57:50-7. [DOI: 10.1016/j.ejca.2015.11.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/12/2015] [Accepted: 11/17/2015] [Indexed: 12/14/2022]
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Ma Y, Zhang L, Rong S, Qu H, Zhang Y, Chang D, Pan H, Wang W. Relation between gastric cancer and protein oxidation, DNA damage, and lipid peroxidation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:543760. [PMID: 24454985 PMCID: PMC3886607 DOI: 10.1155/2013/543760] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 10/29/2013] [Accepted: 12/01/2013] [Indexed: 12/19/2022]
Abstract
OBJECTS The aim of this study is to evaluate protein oxidation, DNA damage, and lipid peroxidation in patients with gastric cancer and to investigate the relationship between oxidative stress and gastric cancer. METHODS We investigated changes in serum protein carbonyl (PC), advanced oxidation protein products (AOPP), and 3-nitrotyrosine (3-NT) levels, as indicators of protein oxidation, serum 8-hydroxydeoxyguanosine (8-OHdG), as a biomarker of DNA damage, and malondialdehyde (MDA), conjugated diene (CD), 4-hydroxynonenal (4-HNE), and 8-ISO-prostaglandin F2α (8-PGF) in serum, as lipid peroxidation markers in gastric cancer (GC) patients and healthy control. RESULTS Compared with control, a statistically significant higher values of 8-OHdG, PC, AOPP, and 3-NT were observed in the GC patients (P < 0.05). The products of lipid peroxidation, MDA, CD, 4-HNE, and 8-PGF, were significantly lower in the GC patients compared to those of control (P < 0.05). In addition, the products of oxidative stress were similar between the Helicobacter pylori positive and the negative subgroups of GC patients. CONCLUSIONS GC patients were characterized by increased protein oxidation and DNA damage, and decreased lipid peroxidation. Assessment of oxidative stress and augmentation of the antioxidant defense system may be important for the treatment and prevention of gastric carcinogenesis.
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Affiliation(s)
- Yongsheng Ma
- The First Affiliated Hospital of Harbin Medical University, No. 199 Dongdazhi Street, Nangang District, Harbin, Heilongjiang 150001, China
| | - Lin Zhang
- The First Affiliated Hospital of Harbin Medical University, No. 199 Dongdazhi Street, Nangang District, Harbin, Heilongjiang 150001, China
| | - Shengzhong Rong
- Public Health School, Mudanjiang Medical College, No. 3 Tongxiang Street, Aimin District, Mudanjiang, Heilongjiang 157011, China
| | - Hongyan Qu
- The Third Affiliated Hospital of Harbin Medical University, No. 150 Haping Road, Nangang District, Harbin, Heilongjiang 150081, China
| | - Yannan Zhang
- Public Health School, Harbin Medical University, No. 157 Baojian Road, Nangang District, Harbin, Heilongjiang 150081, China
| | - Dong Chang
- The First Affiliated Hospital of Harbin Medical University, No. 199 Dongdazhi Street, Nangang District, Harbin, Heilongjiang 150001, China
| | - Hongzhi Pan
- Public Health School, Harbin Medical University, No. 157 Baojian Road, Nangang District, Harbin, Heilongjiang 150081, China
| | - Wenbo Wang
- The First Affiliated Hospital of Harbin Medical University, No. 199 Dongdazhi Street, Nangang District, Harbin, Heilongjiang 150001, China
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Pan Y, Huang J, Xing R, Yin X, Cui J, Li W, Yu J, Lu Y. Metallothionein 2A inhibits NF-κB pathway activation and predicts clinical outcome segregated with TNM stage in gastric cancer patients following radical resection. J Transl Med 2013; 11:173. [PMID: 23870553 PMCID: PMC3726370 DOI: 10.1186/1479-5876-11-173] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Accepted: 07/10/2013] [Indexed: 12/26/2022] Open
Abstract
Background Metallothionein 2A (MT2A) as a stress protein, plays a protective role in gastric mucosal barrier. Its role in the development of gastric cancer (GC) is unclear. The mechanism of MT2A will be investigated in gastric tumorigenesis. Methods MT2A expression was detected in 973 gastric specimens. The biological function was determined through ectopic expressing MT2A in vitro and in vivo. The possible downstream effectors of MT2A were investigated in NF-κB signaling. The protein levels of MT2A, IκB-α and p-IκB-α (ser32/36) expression were analyzed in a subset of 258 patients by IHC staining. The prognostic effects of MT2A, status of IκB-α and TNM stage were evaluated using the Kaplan-Meier method and compared using the log-rank test. Results Decreased MT2A expression was detected in cell lines and primary tumors of GC. In clinical data, loss of MT2A (MT2A + in Normal (n =171, 76.0%); Intestinal metaplasia (n = 118, 50.8%); GC (n = 684. 22.4%, P < 0.001)) was associated with poor prognosis (P < 0.001), advanced TNM stage (P = 0.05), and down-regulation of IκB-α expression (P < 0.001). Furthermore, MT2A was the independent prognostic signature segregated from the status of IκB-α and pathological features. In addition, MT2A inhibited cell growth through apoptosis and G2/M arrest, which negatively regulated NF-κB pathway through up-regulation of IκB-α and down-regulation of p-IκB-α and cyclin D1 expression. Conclusions MT2A might play a tumor suppressive activity through inhibiting NF-κB signaling and may be a prognostic biomarker and potential target for individual therapy of GC patients.
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Affiliation(s)
- Yuanming Pan
- Laboratory of Molecular Oncology, Key laboratory of Carcinogenesis and Translational Research, Ministry of Education, Peking University Cancer Hospital & Institute, No,52 Fucheng Road, Beijing, Haidian District 100142, PR China
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Awasthi R, Kulkarni GT. Development and characterization of amoxicillin loaded floating microballoons for the treatment of Helicobacter pylori induced gastric ulcer. Asian J Pharm Sci 2013. [DOI: 10.1016/j.ajps.2013.07.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Bogen KT. Efficient tumorigenesis by mutation-induced failure to terminate microRNA-mediated adaptive hyperplasia. Med Hypotheses 2012. [PMID: 23183421 DOI: 10.1016/j.mehy.2012.10.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Seven current contending cancer theories consider different sets of critical events as sufficient for tumorigenesis. These theories, most recently the microRNA dysregulation (MRD) theory, have overlapping attributes and extensive empirical support, but also some discrepancies, and some do not address both benign and malignant tumorigenesis. By definition, the most efficient tumorigenic pathways will dominate under conditions that selectively activate those pathways. The MRD theory provides a mechanistic basis to combine elements of the current theories into a new hypothesis that: (i) tumors arise most efficiently under stress that induces and sustains either protective or regenerative states of adaptive hyperplasia (AH) that normally are epigenetically maintained unless terminated; and (ii) if dysregulated by a somatic mutation that prevents normal termination, these two AH states can generate benign and malignant tumors, respectively. This hypothesis, but not multistage cancer theory, predicts that key participating AH-stem-cell populations expand markedly when triggered by stress, particularly chronic metabolic or oxidative stress, mechanical irritation, toxic exposure, wounding, inflammation, and/or infection. This hypothesis predicts that microRNA expression patterns in benign vs. malignant tumor tissue will correlate best with those governing protective vs. regenerative AH in that tissue, and that tumors arise most efficiently inmutagen-exposed stem cells that either happen to be in, or incidentally later become recruited into, an AH state.
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Affiliation(s)
- Kenneth T Bogen
- DrPH DABT, Exponent Inc., Health Sciences, 475, 14th Street, Ste 400, Oakland, CA 94612, USA.
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Yu H. Bacteria-mediated disease therapy. Appl Microbiol Biotechnol 2011; 92:1107-13. [DOI: 10.1007/s00253-011-3648-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 09/29/2011] [Accepted: 10/16/2011] [Indexed: 12/19/2022]
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Okada H, Naito Y, Takagi T, Takaoka M, Oya-Ito T, Fukumoto K, Uchiyama K, Handa O, Kokura S, Nagano Y, Matsui H, Kato Y, Osawa T, Yoshikawa T. Detection of N-(hexanoyl)lysine in the tropomyosin 1 protein in N-methyl-N'-nitro-N-nitrosoguanidine-induced rat gastric cancer cells. J Clin Biochem Nutr 2011; 50:47-52. [PMID: 22247600 PMCID: PMC3246182 DOI: 10.3164/jcbn.11-39] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Accepted: 03/16/2011] [Indexed: 01/10/2023] Open
Abstract
Nε-(Hexanoyl)lysine, formed by the reaction of lysine with n-6 lipid hydroperoxide, is a lipid peroxidation marker during the initial stage of oxidative stress. The aim of the present study is to indentify Nε-(hexanoyl)lysine-modified proteins in neoplastic transformed gastric mucosal cells by N-methyl-N'-nitro-N-nitrosoguanidine, and to compare the levels of these proteins between gastric mucosal cells and normal gastric cells. Much greater fluorescence of 2-[6-(4'-hydroxy)phenoxyl-3H-xanthen-3-on-9-yl]benzoic acid, an index of the intracellular levels of reactive oxygen species, was observed for gastric mucosal cells compared to normal gastric cells. Nε-(Hexanoyl)lysine-modified proteins were detected by SDS-PAGE or two-dimensional electrophoresis and Western blotting using anti-Nε-(hexanoyl)lysine polyclonal antibody, and a protein band of between 30–40 kDa was clearly increased in gastric mucosal cells compared to normal gastric cells. Two Nε-(hexanoyl)lysine-modified protein spots in gastric mucosal cells were identified as the tropomyosin 1 protein by mass spectrometry using a MASCOT search. The existence of Nε-(hexanoyl)lysine modification in tropomyosin 1 was confirmed by Western blotting of SDS-PAGE-separated or two-dimensional electrophoresis-separated proteins as well as by the immunoprecipitation with anti-tropomyosin 1 antibody. These data indicate that Nε-(hexanoyl)lysine modification of tropomyosin 1 may be related to neoplastic transformation by N-methyl-N'-nitro-N-nitrosoguanidine in gastric epithelial cells.
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Affiliation(s)
- Hitomi Okada
- Molecular Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
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Yamada Y, Shigetomi H, Onogi A, Haruta S, Kawaguchi R, Yoshida S, Furukawa N, Nagai A, Tanase Y, Tsunemi T, Oi H, Kobayashi H. New insights into pattern recognition receptors and their ligands in gynecologic pathologies. Hum Immunol 2011; 72:213-8. [DOI: 10.1016/j.humimm.2010.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Revised: 11/10/2010] [Accepted: 12/08/2010] [Indexed: 12/12/2022]
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Effect of microencapsulated precipitants of Lactobacillus casei ATCC 393 on Helicobacter pylori eradication. Process Biochem 2011. [DOI: 10.1016/j.procbio.2010.10.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Can Helicobacter pylori invade human gastric mucosa?: an in vivo study using electron microscopy, immunohistochemical methods, and real-time polymerase chain reaction. J Clin Gastroenterol 2010; 44:416-22. [PMID: 19904218 DOI: 10.1097/mcg.0b013e3181c21c69] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
UNLABELLED BACKGROUND-GOALS: We used transmission electron microscopy and immunohistochemistry (IHC) to investigate how Helicobacter pylori affects the gastric mucosa of humans. STUDY Gastric biopsy specimens were obtained from 15 patients with gastric discomfort. The samples were processed using both microscopic examinations and a real-time polymerase chain reaction to detect H. pylori DNA. IHC staining was performed with an avidin-biotin complex immunoperoxidase kit for paraffin-embedded tissue sections. Polyclonal rabbit anti-H. pylori was used as a primary antibody. RESULTS IHC-applied slides with brown-stained spiral bacteria on the luminal surface and in the intercellular spaces of the gastric epithelium; electron-dense spiral H. pylori of approximately 200 to 300 nm in diameter both in the gastric lumen and between the gastric epithelial cells; coccoid or ellipsoid H. pylori attached to the epithelial cells through egg-cup-like pedestals; coccoid H. pylori within the endocytotic vesicles in the apical cytoplasmic part of the epithelial cells, thus suggesting their internalization by phagocytosis; electron-dense spiral H. pylori within the membrane-bounded vacuoles of both the gastric epithelial cells, and the lamina propria; a prominent vacuolization of gastric epithelial cells invaded by H. pylori; and swollen and lytic gastric epithelial cells that suggest a mucosal erosion and may lead to peptic ulcer. All of these microscopic findings were not present in the H. pylori DNA-negative specimens that were used as the control group. CONCLUSION This is the first histomicrobiologic study to show gastric cells invaded by H. pylori in patients with H. pylori infection confirmed by real-time polymerase chain reaction.
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Chung JW, Kim YJ, Lee SJ, Hahm KB. Korean Red Ginseng: Qualitative and Quantitative Benefits on Helicobacter pylori Infection. J Ginseng Res 2010; 34:77-88. [DOI: 10.5142/jgr.2010.34.2.077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Kim YJ, Chung JW, Lee SJ, Choi KS, Kim JH, Hahm KB. Progression from chronic atrophic gastritis to gastric cancer; tangle, toggle, tackle with Korea red ginseng. J Clin Biochem Nutr 2010; 46:195-204. [PMID: 20490314 PMCID: PMC2872224 DOI: 10.3164/jcbn.10-03] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Accepted: 01/15/2010] [Indexed: 01/05/2023] Open
Abstract
Key molecular players that link inflammation to carcinogenesis are prostaglandins, cytokines, nuclear factor-κB (NF-κB), chemokines, angiogenic growth factors, and free radicals, all of which lead to increased mutations and altered functions of important enzymes and proteins, for example, activation of oncogenic products and/or inhibition of tumor suppressor proteins, in inflamed tissues, thus contributing to multi-stage carcinogenesis process. Interpreted reversely, the identification of the molecular mechanisms by which chronic inflammation increases cancer risk or optimal intervention of targeted drugs or agents during the inflammation-associated carcinogenic process could be a necessary basis for developing new strategy of cancer prevention at many sites. In this review, we discuss the possibilities for cancer prevention by controlling inflammation process in Helicobacter pylori (H. pylori)-associated inflamed stomach with Korea red ginseng. Korea red ginseng is a good example of a natural herb that has ubiquitous properties that are conductive to stop inflammatory carcinogenesis that is un wanted outcome of H. pylori infection, rendering rejuvenation of chronic atrophic gastritis.
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Affiliation(s)
- Yoon Jae Kim
- Department of Gastroenterology Gachon Graduate School of Medicine, 7-45 Songdo-dong, Yeonsu-gu, Incheon 406-840, Korea
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Lee JS, Paek NS, Kwon OS, Hahm KB. Anti-inflammatory actions of probiotics through activating suppressor of cytokine signaling (SOCS) expression and signaling in Helicobacter pylori infection: a novel mechanism. J Gastroenterol Hepatol 2010; 25:194-202. [PMID: 20136974 DOI: 10.1111/j.1440-1746.2009.06127.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS In spite of the International Agency for Research on Cancer's definition that Helicobacter pylori is the definite carcinogen of gastric cancer, the simple eradication of the bug is not enough to prevent resultant gastric cancer, and increasing microbial resistance further limits the eradication application. Therefore, probiotics, non-pathogenic microbial feed that can affect the host in a beneficial manner, could be an alternate way to enhance anti-inflammation against H. pylori. However, the mechanism of their anti-inflammatory actions is still unclear. In the current study, we hypothesized that suppressor of cytokine signaling (SOCS) signaling could be a feasible anti-inflammatory mechanism of probiotics against H. pylori infection. RESULTS H. pylori infection or their lipopolysaccharide stimulation led to significant increased expressions of inflammatory mediators including tumor necrosis factor-alpha, interleukin-8, inducible nitric oxide synthase and cyclooxygenase-2 in AGS cells and pretreatment of Lactobacillus plantarum, Lactobacillus rhamnosis and Lactobacillus acidophilus significantly attenuated the expressions of these inflammatory mediators in accordance with the blocking action of nuclear factor-kappaB nuclear translocation. Probiotic administration increased expression of SOCS-2 and SOCS-3 and exerted the active SOCS signaling featured with earlier and higher expressions of SOCS-2 and SOCS-3. In contrast to weak inactivation of mitogen-activated protein kinases including p-38 and extracellular signal-regulated kinase 1/2, probiotic-induced SOCS expressions were mediated through either significant phosphorylation of signal transducers and activation of transcription (STAT)-1 and STAT-3 or simultaneous inhibition of Janus kinase (JAK)2 phosphorylation, which is known to signal SOCS-2/SOCS-3 negatively. CONCLUSION Anti-inflammatory signals of SOCS through STAT-1/STAT-3 activation and JAK2 inactivation might be a key anti-inflammatory mechanism of probiotics, setting probiotics as a non-microbial strategy to H. pylori infection.
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Affiliation(s)
- Jeong Sang Lee
- Laboratory of Translational Medicine, Gachon University Lee Gil Ya Cancer and Diabetes Institute, Department of Gastroenterology, Gachon Graduate School of Medicine, Incheon, Korea
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Noyan T, Guducuoglu H, Ilhan M. A study of oxidative stress parameters in anti-helicobacter pylorus immunoglobulin g positive and negative gastric cancer patients. Yonsei Med J 2009; 50:677-82. [PMID: 19881972 PMCID: PMC2768243 DOI: 10.3349/ymj.2009.50.5.677] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2007] [Revised: 11/20/2007] [Accepted: 11/20/2007] [Indexed: 12/19/2022] Open
Abstract
PURPOSE Helicobacter pylorus (HP) is a Gram-negative spiral-shaped microaerophilic bacterium, which colonizes in the gastric mucosa of humans. The gastric human pathogen HP causes chronic gastritis and ulcers, and has a strong relationship with gastric cancer. The aim of this study was to determine advanced oxidation protein products (AOPP) levels, activities of myeloperoxidase (MPO) and catalase (CAT) in two groups. MATERIALS AND METHODS For this aim, one group included 30 patients with gastric cancer (Group 1) and the other included 30 subjects with non-gastric cancer and Anti-HP immunoglobulin (Ig) G antibody positive (group 2). Anti-HP IgG antibody test values were found as positive in fifty percent of group 1 and all of the group 2 patients. RESULTS Significantly increased AOOP levels were found in group 1 (p < 0.05) compared to group 2. There were no significant differences between the groups in regard to activities of MPO and CAT. In addition, AOPP level, MPO and CAT activities were similar among the Anti-HP IgG positive and negative subgroups of group 1 patients. CONCLUSION The result of this study indicated that gastric cancer patients were characterized by increased protein oxidation, whereas there was no significant difference in oxidative stress parameters and antioxidant enzyme activity between the Anti-HP IgG positive and negative gastric cancer patients.
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Affiliation(s)
- Tevfik Noyan
- Department of Biochemistry, Yuzuncu Yil University, Medical Faculty, Van, Turkey.
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Abstract
Helicobacter pylori (H. pylori) infection causes peptic ulcer disease, mucosa-associated lymphoid tissue (MALT) lymphomas and gastric adenocarcinomas, for which the pathogenesis of chronic gastric inflammation prevails and provides the pathogenic basis. Since the role of H. pylori infection is promoting carcinogenesis rather than acting as a direct carcinogen, as several publications show, eradication alone cannot be the right answer for preventing H. pylori-associated gastric cancer. Therefore, a non-antimicrobial approach has been suggested to attain microbe-associated cancer prevention through controlling H. pylori-related chronic inflammatory processes and mediators responsible for carcinogenesis. Phytoceutical is a term for plant products that are active on biological systems. Phytoceuticals such as Korean red ginseng, green tea, red wine, flavonoids, broccoli sprouts, garlic, probiotics and flavonoids are known to inhibit H. pylori colonization, decrease gastric inflammation by inhibiting cytokine and chemokine release, and repress precancerous changes by inhibiting nuclear factor-kappa B DNA binding, inducing profuse levels of apoptosis and inhibiting mutagenesis. Even though further unsolved issues are awaited before phytoceuticals are accepted as a standard treatment for H. pylori infection, phytoceuticals can be a mighty weapon for either suppressing or modulating the disease-associated footprints of H. pylori infection.
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Affiliation(s)
- Sun-Young Lee
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
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Lee JS, Kim HS, Hahm KB, Sohn MW, Yoo M, Johnson JA, Surh YJ. Inhibitory effects of 7-carboxymethyloxy-3',4',5-trimethoxyflavone (DA-6034) on Helicobacter pylori-induced NF-kappa B activation and iNOS expression in AGS cells. Ann N Y Acad Sci 2007; 1095:527-35. [PMID: 17404066 DOI: 10.1196/annals.1397.057] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The Helicobacter pylori were identified by Marshall and Warren in 1984. H. pylori survive in the forbidding harsh acid environment of the stomach and duodenum by hiding in the mucus layer and neutralizing gastric acid in its local surrounding environment. Multiple lines of evidence suggest that H. pylori infection is one of the primary causes of gastritis and peptic ulcer, which are provoked by oxidative stress and inflammation. More than 50% of the world's population is infected by this bacterium. The H. pylori-induced inflammation has been implicated in the pathogenesis and progression of gastric cancer. DA-6034 (7-carboxymethyloxy-3',4',5-trimethoxy flavone) is a synthetic flavonoid known to possess anti-inflammatory activity. It has been reported that oral administration of DA-6034 suppresses the inflammatory bowel disease (IBD) in animal models. In this article, we attempted to examine the effect of DA-6034 on H. pylori-induced inflammation in human gastric cancer (AGS) cells by targeting NF-kappaB and extracellular signal-regulated kinase (ERK), a representative MAPK.
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Affiliation(s)
- Jeong-Sang Lee
- College of Pharmacy, Seoul National University, Seoul 151-742, Korea
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Abstract
Oxidative stress is associated with carcinogenesis. Reactive oxygen and nitrogen species contribute to the accumulation of mutations in the genome, presumably followed by selective processes. Recent data suggest that preferred signaling pathways exist for oxidative stress-associated carcinogenesis. Whether this completely depends on random mutations induced by reactive species or whether instead some fragile genomic loci are sensitive to oxidative damage in association with changes of transcriptional activity or other topologic or nontopologic effects remains to be explored. Reliable markers for oxidative stress as well as for oxidative stress-induced preneoplastic lesions must be established.
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Affiliation(s)
- Shinya Toyokuni
- Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto University, Japan
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Zhou HJ, Lin JS, Zhou XM, Li PY, Tao LW. Expression of DNA repair enzyme hMTH1 mRNA and its protein in hepatocellular carcinoma. Shijie Huaren Xiaohua Zazhi 2004; 12:2057-2060. [DOI: 10.11569/wcjd.v12.i9.2057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To study the expression of DNA repair enzyme hMTH1 mRNA and protein in hepatocellular carcinoma (HCC) tissues, normal liver cell and hepatoma cell lines, and to investigate their function in the progress of HCC.
METHODS: Expression of hMTH1 mRNA in matched HCC tissues(33 cases)/surrounding tissues of HCC (33 cases), normal liver cell L-02 and hepatoma cell lines SMMC7721 HepG2 were detected by semi-quantitative reverse-transcription polymerase chain reaction (RT-PCR). hMTH1 protein was detected in corresponding HT tissues (17 cases HT) as well as their surrounding liver tissues (17 cases HST) by immunohistochemistry.
RESULTS: The expression level of hMTH1 mRNA in HT was higher than that in HST (t = 2.424 , P = 0.021<0.05). The expression level of hMTH1 mRNA in two hepatoma cell lines was higher than that in normal liver cell line (F = 6.810, P = 0.009<0.01). The expression of hMTH1 mRNA in SMMC7721 was similar to that in HepG2. hMTH1 protein was 88.2% (15 of 17) positive in HT and 82.4% (14 of 17) in HST and was mainly distributed in hepatocytesi cytoplasm. The protein level of hMTH1 in HCC tissues was correspondingly higher than in their surrounding tissues (t = 2.618, P = 0.019<0.05).
CONCLUSION: Overexpression of hMTH1 mRNA and its protein in the liver tissues of HCC and hepatoma cell lines is found.
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Toyokuni S. Redox control of carcinogenesis and tumor biology. Antioxid Redox Signal 2004; 6:481-2. [PMID: 15130274 DOI: 10.1089/152308604773934233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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