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Lv J, Chen P, Wu J, Wen Z, Zhao C. The association between statin use and prognosis in esophageal cancer patients: A meta-analysis. Medicine (Baltimore) 2023; 102:e33359. [PMID: 36961185 PMCID: PMC10036019 DOI: 10.1097/md.0000000000033359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/03/2023] [Indexed: 03/25/2023] Open
Abstract
BACKGROUND The impact of statin use on the survival of esophageal cancer patients remains unclear now. The aim of this study was to identify the relationship between statin use and the long-term survival of esophageal cancer patients. METHODS The PubMed, EMBASE, and Web of Science databases were searched up to August 20, 2022, for relevant studies. The endpoints included overall survival (OS), cancer-specific survival (CSS), recurrence-free survival, and hazard ratios (HRs) with corresponding 95% confidence intervals (CIs) were pooled to assess the association between statin use and the prognosis of esophageal cancer patients. Subgroup analysis based on the pathological type (adenocarcinoma vs squamous cell carcinoma), dose of statin use and tumor stage (tumor-node-metastasis I-III vs IV) was further performed. All statistical analyses were conducted using STATA 12.0 software. RESULTS A total of 7 retrospective studies involving 25,711 participants were included in this meta-analysis. The pooled results indicated that statin use was significantly associated with improved OS (HR = 0.80, 95% CI: 0.74-0.87, P < .001), CSS (HR = 0.77, 95% CI: 0.74-0.89, P < .001), and recurrence-free survival (HR = 0.38, 95% CI: 0.16-0.87, P = .022). Furthermore, subgroup analysis stratified by the pathological type, dose of statin use and tumor stage for OS and CSS showed similar results and indicated the protective role of statin use in the prognosis of esophageal cancer patients. CONCLUSION Statin use is significantly associated with improved long-term survival of esophageal cancer patients and might serve as a promising prognostic indicator in esophageal cancer. However, more prospective high-quality studies are still needed to verify our findings.
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Affiliation(s)
- Jing Lv
- Department of Thoracic Surgery, People’s Hospital of Deyang City, Deyang, China
| | - Peirui Chen
- Department of Thoracic Surgery, People’s Hospital of Deyang City, Deyang, China
| | - Jianqiang Wu
- Department of Thoracic Surgery, People’s Hospital of Deyang City, Deyang, China
| | - Zhi Wen
- Department of Thoracic Surgery, People’s Hospital of Deyang City, Deyang, China
| | - Changming Zhao
- Department of Thoracic Surgery, Luojiang District People’s Hospital of Deyang City, Deyang, China
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2
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Mahboubi-Rabbani M, Abbasi M, Zarghi A. Natural-Derived COX-2 Inhibitors as Anticancer Drugs: A Review of their Structural Diversity and Mechanism of Action. Anticancer Agents Med Chem 2023; 23:15-36. [PMID: 35638275 DOI: 10.2174/1389450123666220516153915] [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: 01/12/2022] [Revised: 02/07/2022] [Accepted: 03/01/2022] [Indexed: 02/08/2023]
Abstract
Cyclooxygenase-2 (COX-2) is a key-type enzyme playing a crucial role in cancer development, making it a target of high interest for drug designers. In the last two decades, numerous selective COX-2 inhibitors have been approved for various clinical conditions. However, data from clinical trials propose that the prolonged use of COX-2 inhibitors is associated with life-threatening cardiovascular side effects. The data indicate that a slight structural modification can help develop COX-2 selective inhibitors with comparative efficacy and limited side effects. In this regard, secondary metabolites from natural sources offer great hope for developing novel COX-2 inhibitors with potential anticancer activity. In recent years, various nature-derived organic scaffolds are being explored as leads for developing new COX-2 inhibitors. The current review attempts to highlight the COX-2 inhibition activity of some naturally occurring secondary metabolites, concerning their capacity to inhibit COX-1 and COX-2 enzymes and inhibit cancer development, aiming to establish a structure-activity relationship.
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Affiliation(s)
- Mohammad Mahboubi-Rabbani
- Department of Medicinal Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Abbasi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Afshin Zarghi
- Department of Medicinal Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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3
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Jiang YX, Chen Y, Sun HH, Xu SC. Effects of Cyclooxygenase-2 Inhibitors on Gastrointestinal Malignancies: a Systematic Review and Meta-analysis. Indian J Surg Oncol 2022; 13:348-355. [DOI: 10.1007/s13193-022-01547-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 05/03/2022] [Indexed: 11/24/2022] Open
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Berbecka M, Forma A, Baj J, Furtak-Niczyporuk M, Maciejewski R, Sitarz R. A Systematic Review of the Cyclooxygenase-2 (COX-2) Expression in Rectal Cancer Patients Treated with Preoperative Radiotherapy or Radiochemotherapy. J Clin Med 2021; 10:4443. [PMID: 34640461 PMCID: PMC8509380 DOI: 10.3390/jcm10194443] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/14/2021] [Accepted: 09/24/2021] [Indexed: 02/05/2023] Open
Abstract
The main objective of this systematic review is to investigate the expression level of the cyclooxygenase-2 (COX-2) in rectal cancer treated with either preoperative radiotherapy or radiochemotherapy. In addition, we have summarized the effects of preoperative treatment of rectal cancer with regards to the expression levels of COX-2. A systematic literature review was performed in The Cochrane Library, PubMed, Web of Science, and Scopus databases on 1 January 2021 with the usage of the following search string-(cyclooxygenase-2) OR (COX-2) AND (rectal cancer) AND (preoperative radiochemotherapy) OR (preoperative radiotherapy). Among the 176 included in the analysis, only 13 studies were included for data extraction with a total number of 2095 patients. The results of the analysis are based on the articles concerning the expression of COX-2 in rectal cancer among patients treated with preoperative radiotherapy or radiochemotherapy. A COX-2 expression is an early event involved in rectal cancer development. In cases of negative COX-2 expression, radiotherapy and radiochemotherapy might contribute to the reduction of a local recurrence. Therefore, COX-2 may be considered as a biologic factor while selecting patients for more effective, less time-consuming and less expensive preoperative treatment. However, the utility of the administration of COX-2 inhibitors to patients with COX-2 overexpression, in an attempt to improve the patients' response rate to the neoadjuvant treatment, needs an assessment in further clinical trials.
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Affiliation(s)
- Monika Berbecka
- Department of Normal Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (M.B.); (J.B.); (R.M.)
| | - Alicja Forma
- Department of Forensic Medicine, Medical University of Lublin, 20-090 Lublin, Poland;
| | - Jacek Baj
- Department of Normal Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (M.B.); (J.B.); (R.M.)
| | | | - Ryszard Maciejewski
- Department of Normal Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (M.B.); (J.B.); (R.M.)
| | - Robert Sitarz
- Department of Normal Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (M.B.); (J.B.); (R.M.)
- Department of Surgical Oncology, St. John’s Cancer Center, 20-090 Lublin, Poland
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Song XD, Wang YN, Zhang AL, Liu B. Advances in research on the interaction between inflammation and cancer. J Int Med Res 2019; 48:300060519895347. [PMID: 31885347 PMCID: PMC7686609 DOI: 10.1177/0300060519895347] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Inflammation is the body's response to cell damage. Cancer is a general
term that describes all malignant tumours. There are no confirmed data
on cancer-related inflammation, but some research suggests that up to
50% of cancers may be linked to inflammation, which has led to the
concept of ‘cancer-associated inflammation’. Although some cancer
patients do not appear to have a chronic inflammatory background,
there might be inflammatory cell infiltration in their cancer tissues.
The continuation of the inflammatory response plays an important role
in the initiation, promotion, malignant transformation, invasion and
metastasis of cancer. Anti-inflammatory therapy has been shown to have
some effects on the prevention and treatment of cancer, which supports
a pathogenic relationship between inflammation and cancer. This review
describes the interaction between inflammation and tumour development
and the main mechanism of regulation of the inflammatory response
during tumour development.
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Affiliation(s)
- Xin-Da Song
- Department of Urinary Surgery, Graduate School of Peking Union Medical College, Beijing Hospital, National Centre of Gerontology, Beijing, China
| | - Ya-Ni Wang
- School of Basic Medical Sciences, Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Ai-Li Zhang
- Department of Urinary Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Bin Liu
- Department of Urinary Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
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Negi RR, Rana SV, Gupta V, Gupta R, Chadha VD, Prasad KK, Dhawan DK. Over-Expression of Cyclooxygenase-2 in Colorectal Cancer Patients. Asian Pac J Cancer Prev 2019; 20:1675-1681. [PMID: 31244287 PMCID: PMC7021602 DOI: 10.31557/apjcp.2019.20.6.1675] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Indexed: 12/28/2022] Open
Abstract
Background: Colorectal carcinoma (CRC) is the most common neoplasm of the gastrointestinal tract. COX-2 plays an important role in CRC development and is a key target for the regression of colorectal tumorigenesis by non-steroidal anti-inflammatory drugs. The present study was conducted to examine the relationship of the levels of COX-2 in CRC patients with the clinico-pathological parameters and also to assess its usefulness as a potential biomarker for diagnosis of CRC. Methods: Prior to surgery, 30 CRC patients were enrolled and the samples from colon tumors and surrounding tissues were taken after they underwent surgical intervention at PGIMER, Chandigarh. mRNA expression levels of COX-2 were examined in 30 CRC and adjacent normal colonic mucosa by quantitative polymerase chain reaction (qPCR). The expression of COX-2 was assessed by immunohistochemical method using rabbit polyclonal antibodies against human COX-2 protein. Results: The quantitative relative expression of COX-2 mRNA was observed to be significantly higher (p<0.05) in colorectal cancer tissues as compared to adjacent normal colon tissues. Also, female CRC patients showed significantly higher (p<0.009) expression of COX-2 mRNA vis-a-vis male colorectal cancer patients. This is the first study which has reported a direct relationship between COX-2 mRNA expressions in male colorectal cancer patients versus females. Further, immunohistochemistry of COX-2 confirmed the quantitative real time-PCR findings. Conclusion: Our study shows that COX-2 over expression in colorectal carcinoma patients is closely associated with clinico-pathological parameters and is more pronounced in males versus females. Further, COX-2 mRNA expression can serve as a potential biomarker for the diagnosis of CRC.
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Affiliation(s)
- Ram Rattan Negi
- Department of Biophysics, Panjab University, Chandigarh, India.
| | - Satya Vati Rana
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Vikas Gupta
- Department of General Surgery, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Rajesh Gupta
- Department of General Surgery, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | | | - Kaushal Kishor Prasad
- Department of Gastroenterology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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Mosallaei M, Simonian M, Ahangari F, Miraghajani M, Mortazavi D, Salehi AR, Khosravi S, Salehi R. Single nucleotide polymorphism rs4648298 in miRNAs hsa-miR21 and hsa-miR590 binding site of COX gene is a strong colorectal cancer determinant. J Gastrointest Oncol 2018; 9:448-457. [PMID: 29998010 DOI: 10.21037/jgo.2017.11.01] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Genetic determinants are considered as driving forces in development colorectal cancer (CRC), a malignancy that ranks as the second cause of cancer death in the world. Single nucleotide polymorphisms (SNPs), are considered as the main genetic factor in cancers susceptibility. MicroRNAs are critical players in posttranslational gene regulation by binding to their specific recognition sequences located at 3' untranslated region (UTR) of mRNAs. In present study we have elucidated the role of 9,850 A > G (rs4648298), in development of sporadic CRC in Iranian population. Methods A case-control study using 88 CRC patients and 88 noncancerous counterparts was undertaken in order to determine rs4648298 genotypes using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Also, a meta-analysis was performed based on 9 articles accessed via the MEDLINE, Cochrane review, Google Scholar and Scopus databases. Results AA genotype was determined to be associated with significant decreased risk of CRC in our study population [odds ratio (OR) =0.14; 95% confidence interval (CI), 0.05-0.34; P<0.001]. In a meta-analysis on 6 risk estimates for the AG versus AA genotype, we found a significant inverse association between AG SNPs and risk of gastric adenocarcinoma, CRC, breast cancer and prostate cancer (OR =0.86; 95% CI, 0.76-0.98; P<0.02). Conclusions Our results suggest significant correlation between rs4648298 polymorphism and CRC risk in Iranian population.
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Affiliation(s)
- Meysam Mosallaei
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Miganoosh Simonian
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fateme Ahangari
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maryam Miraghajani
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Deniz Mortazavi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ahmad Reza Salehi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sharifeh Khosravi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Rasoul Salehi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.,Gerfa Namayesh Azmayesh (GENAZMA) Science & Research Institute, Isfahan, Iran
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9
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Miyashita T, Kono T, Matsui D, Yamazaki Y, Sadatomi D, Fujitsuka N, Nakanuma S, Okamoto K, Makino I, Kinoshita J, Nakamura K, Oyama K, Tajima H, Takamura H, Ninomiya I, Fushida S, Mukaisho K, Harmon JW, Ohta T. Preventive effect of oral hangeshashinto (TJ-14) on the development of reflux-induced esophageal cancer. Surgery 2018; 164:S0039-6060(18)30037-0. [PMID: 29576309 DOI: 10.1016/j.surg.2018.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 01/28/2018] [Accepted: 02/05/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Prostaglandin E2 is one of the potential products that promotes development of tumors and also is a strong inducer of M2 phenotype macrophages, which contribute to tumor development in the immunosuppressed microenvironment. Hangeshashinto (TJ-14), a Japanese traditional medicine (Kampo medicine), has been reported to be effective in preventing chemotherapy-induced oral mucositis through the reduction of prostaglandin E2. We previously developed a surgical rat reflux model of esophageal cancer and used this well-established animal model to investigate the action of TJ-14 in preventing esophageal cancer. We also assessed the effect of TJ-14 on the downregulation of prostaglandin E2 production, utilizing esophageal squamous cell carcinoma cell line exposed to bile acid. METHODS An end-to-side esophagojejunostomy was performed for the reflux model. A daily oral diet was subsequently administered, consisting of either diet-incorporated TJ-14 or standard diet as a control group. The rats were killed at 40 weeks after surgery. The incidence of esophageal cancer, Barrett's metaplasia, and proliferative hyperplasia were assessed histologically. CD163, a M2 phenotype macrophage marker, was assessed with immunohistochemistry. Prostaglandin E2 enzyme immunoassay and lactate dehydrogenase assay were performed on chenodeoxycholic acid or gastroesophageal reflux contents exposed to esophageal squamous cell carcinoma cell line. RESULTS Sixty-seven percent of the controls (n = 12) developed esophageal cancer, but animals that received TJ-14 (n = 10) had a cancer incidence of 10% (P=.007). Barrett's metaplasia was found in 83% of the rats in the control group and 50% of the rats in the TJ-14 indicating a protective tendency of TJ-14 (P=.095). All of the rats developed proliferative hyperplasia. The number of M2 phenotype macrophage were significantly decreased in the TJ-14 group compared to the control group in both Barrett's metaplasia and esophageal cancer lesions. TJ-14 inhibited chenodeoxycholic acid or gastroesophageal reflux content-induced prostaglandin E2 production in esophageal squamous cell carcinoma cell. CONCLUSION TJ-14 reduced the incidence of reflux-induced esophageal cancer and the infiltration of M2 macrophages in a surgical rat model or suppressed prostaglandin E2 production in esophageal squamous cell carcinoma cell. Further investigation is required regarding the potential clinical use of TJ-14 as an esophageal cancer chemopreventive agent.
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Affiliation(s)
- Tomoharu Miyashita
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan.
| | - Toru Kono
- Center for Clinical and Biomedical Research, Sapporo Higashi Tokushukai Hospital, Sapporo, Hokkaido, Japan
| | - Daisuke Matsui
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Yuki Yamazaki
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Daichi Sadatomi
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ami, Ibaraki, Japan
| | - Naoki Fujitsuka
- Tsumura Kampo Research Laboratories, Tsumura & Co., Ami, Ibaraki, Japan
| | - Shinichi Nakanuma
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Koichi Okamoto
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Isamu Makino
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Jun Kinoshita
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Keishi Nakamura
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Katsunobu Oyama
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Hidehiro Tajima
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Hiroyuki Takamura
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Itasu Ninomiya
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Sachio Fushida
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Kenichi Mukaisho
- Department of Pathology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - John W Harmon
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Tetsuo Ohta
- Department of Gastroenterological Surgery, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
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Interleukin-6, tumor necrosis factor-alpha and receptor activator of nuclear factor kappa ligand are elevated in hypertrophic gastric mucosa of pachydermoperiostosis. Sci Rep 2017; 7:9686. [PMID: 28851954 PMCID: PMC5574921 DOI: 10.1038/s41598-017-09671-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 07/26/2017] [Indexed: 12/23/2022] Open
Abstract
Pachydermoperiostosis (PDP) is a rare inherited multisystem disease characterized with digital clubbing, pachydermia and periostosis. Variants in either HPGD or SLCO2A1 that interrupt the prostaglandin E2 (PGE2) pathway have been shown to be involved in PDP. Here, in addition to six confirmed variants in HPGD or SLCO2A1, we identified four novel SLCO2A1 variants in eight PDP patients from seven Chinese Han families. In addition, gastric mucosa hyperplasia was observed in all affected individuals and interleukin-6 (IL-6), tumor necrosis factor-alpha (TNFα) and receptor activator of nuclear factor kappa ligand (RANKL) expression were elevated in hypertrophic gastric mucosa. Two of eight patients who had severe arthralgia were treated with celecoxib. After three months, their arthralgia was partly relieved and IL-6, TNFα and RANKL expression were decreased in accordance with their relieved hypertrophic gastric mucosa. Our study broadens the variation spectrum of SLCO2A1 and suggests that the gastric mucosa hyperplasia might be a common characteristic of PDP. Moreover, celecoxib would be a considerable choice for PDP patients. We also revealed that IL-6, TNFα and RANKL may play important roles in the molecular mechanisms of gastric mucosa hyperplasia in PDP for the first time.
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Jacalin Has Chemopreventive Effects on Colon Cancer Development. BIOMED RESEARCH INTERNATIONAL 2017; 2017:4614357. [PMID: 28676858 PMCID: PMC5476885 DOI: 10.1155/2017/4614357] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 05/03/2017] [Indexed: 01/03/2023]
Abstract
Colorectal cancer, which is one of the most common causes of cancer-related deaths worldwide, has a slow natural history that provides a great opportunity for prevention strategies. Plant-derived natural products have received considerable attention because of their inherent colorectal cancer chemopreventive effects. The plant lectin jacalin specifically recognizes the tumor-associated Thomsen-Friedenreich antigen and has antiproliferative effects on human colon cancer cells, highlighting its potential antitumor activity. To evaluate jacalin's potential application in colorectal cancer chemoprevention, we studied its effects on the early stages of carcinogenesis. Balb/c mice were given 4 intrarectal deposits of 0.1 ml solution of Methyl-N'-Nitro-N-Nitroso-Guanidine (5 mg/ml) twice a week (with a 3-day interval) for 2 weeks. Starting 2 weeks before carcinogen administration, animals were treated orally with jacalin (0.5 and 25 μg) three times a week (on alternate weekdays) for 10 weeks. We show that jacalin treatment reduced the number of preneoplastic lesions in carcinogen-exposed mice. This anticarcinogenic activity was associated with decreased colonic epithelial cell proliferation and stromal COX-2 expression and with increased intestinal production of TNF-α. Our results demonstrate that jacalin is able to modulate the early stages of colon carcinogenesis and emphasize its promising chemopreventive activity in colorectal cancer.
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Buommino E, D'Abrosca B, Donnarumma G, Parisi A, Scognamiglio M, Fiorentino A, De Luca A. Evaluation of the antioxidant properties of carexanes in AGS cells transfected with the Helicobacter pylori's protein HspB. Microb Pathog 2017; 108:71-77. [PMID: 28479510 DOI: 10.1016/j.micpath.2017.05.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 04/26/2017] [Accepted: 05/02/2017] [Indexed: 02/07/2023]
Abstract
Naturally derived compounds represent a potential source of pharmacologically active drugs able to contrast different diseases, including gastric cancer, a multifactorial disease, in which the important role played by H. pylori infection has been demonstrated. Carexanes, stilbene derivatives, isolated from plants of the Carex distachya Desf., are unusual secondary metabolites with a tetracyclic skeleton arising from a cyclization of prenylstilbenoid precursors. In this study we firstly showed the ability of three purified carexanes CxB, CxG, and CxI to enhance the antioxidant response of AGS cells and to contrast the effect of the H. pylori's protein HspB. Among them CxI was the molecule that best modified the expression of genes involved in the antioxidant response. In particular, CxI was able to reduce Keap-1 gene expression and induce NQO1 gene expression, both at 4 and 24 h in AGS cells, as showed by real time PCR. Nrf2 induction was evident only at 24 h. Interestingly, the effect of CxI was stronger in HspB-transfected AGS cells, where Keap-1 gene expression was nearly abrogated. Finally, we demonstrated that CxI was able to reduce also COX-2 gene expression in HspB-transfected AGS cells, compared with untreated HspB-transfected cells, both at 4 and 24 h. This study first report that carexanes might represent candidate molecules able to contrast the deleterious effect of HspB protein but also to reduce the inflammatory process induced by H. pylori infection.
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Affiliation(s)
| | - Brigida D'Abrosca
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, Università degli Studi della Campania Luigi Vanvitelli, 81100 Caserta, Italy
| | - Giovanna Donnarumma
- Department of Experimental Medicine, Section of Microbiology and Clinical Microbiology, Università degli Studi della Campania Luigi Vanvitelli, Naples, 80138, Italy
| | - Annamaria Parisi
- Department of Experimental Medicine, Section of Microbiology and Clinical Microbiology, Università degli Studi della Campania Luigi Vanvitelli, Naples, 80138, Italy
| | - Monica Scognamiglio
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, Università degli Studi della Campania Luigi Vanvitelli, 81100 Caserta, Italy
| | - Antonio Fiorentino
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, Università degli Studi della Campania Luigi Vanvitelli, 81100 Caserta, Italy
| | - Antonio De Luca
- Department of Mental and Physical Health and Preventive Medicine, Section of Human Anatomy, Università degli Studi della Campania Luigi Vanvitelli, Naples, 80138, Italy
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13
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Anti-cancer activity and potential mechanism of a novel aspirin derivative. Eur J Pharmacol 2016; 791:137-146. [PMID: 27565221 DOI: 10.1016/j.ejphar.2016.07.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 07/27/2016] [Accepted: 07/28/2016] [Indexed: 12/21/2022]
Abstract
Aspirin has been used in the treatment and chemoprevention of many malignant cancers. The mechanism of its anti-cancer activity mainly involves the inhibition of cyclooxygenase-2 (COX-2). However, the application of aspirin is limited by the serious gastric mucosal damage that accompanies its usage. We have previously reported the preparation of a novel aspirin derivative that we named Ca-Asp, and showed that it causes less damage to gastric mucosa of rat and inhibits the expression of COX-2 to higher degree than Asp. However, the anti-cancer effect and mechanism of Ca-Asp was not demonstrated. In this study, the anti-cancer effect of Ca-Asp was investigated and compared with those of Asp and Hydroxyapatite (Hap) at the cell level. The results showed that treatment of SGC-7901 cells (human gastric cancer cell line) with 200-400μg/ml Ca-Asp resulted in significant reduction in cell viability, compared to treatment with either Asp or Hap, and at a higher concentration (500μg/ml). Subsequent investigation into the possible underlying mechanism showed that Ca-Asp induced apoptosis and caused cell cycle arrest at the G1 phase. Ca-Asp also up-regulated the levels of caspase-3 and p53, but down regulated the level of cyclin D1, NF-κB, COX-2 and PGE2. Furthermore, simultaneous treatment of SGC-7901 cells with Ca-Asp and exogenous PGE2 reduced the anti-proliferative effect of Ca-Asp on the cells. Taken together, the results suggested that Ca-Asp might act as a potential anti-cancer drug, and that its suppression of PGE2 production might constitute an important part of its anti-cancer activity.
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Prognostic significance of expression of cysteine-rich 61 and cyclooxygenase-2 in gastric cancer. BMC Gastroenterol 2016; 16:74. [PMID: 27457107 PMCID: PMC4960852 DOI: 10.1186/s12876-016-0478-4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 06/07/2016] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND This study aimed to evaluate the clinical significance of cysteine-rich 61 (Cyr-61/CCN1) and cyclooxygenase-2 (COX-2), and further explored their combined prognostic significance in gastric cancer. METHODS This retrospective study examined the expressions of Cyr-61 and COX-2 in 82 surgically removed gastric cancer specimens and 43 non-tumor gastric mucosa specimens by immunohistochemical staining to identify the abnormal expression of Cyr-61 or COX-2 in gastric cancer. Crude survival curves were constructed by the Kaplan-Meier method and Cox proportional hazards regression analysis was performed to confirm the prognostic roles of Cyr-61/COX-2 as well as sex and histological grade. RESULTS The expressions of Cyr-61 (p < 0.001) and COX-2 (p = 0.001) were both significantly up-regulated in gastric cancer samples compared with non-tumor gastric mucosa samples. The high expression of Cyr-61 or COX-2 was associated with invasion, lymph node metastasis, distant metastases, poor histological differentiation, advanced TNM stage and lower 5-year survival rate (all p < 0.05). Both Cyr-61 and COX-2 high expressions [hazard ratio (HR) = 31.8, 95 % confidence interval (CI) 4.09-246.8] was associated the higher risk of death during 5 years follow up than single Cyr-61 high expression (HR = 4.1, 95 % CI 1.5-11.6) or COX-2 high expression (HR = 2.9, 95 % CI 1.06-7.8). CONCLUSIONS Cyr-61 and COX-2 expressions are associated with the progression of gastric cancer. Additionally, combined expressions of Cyr-61 and COX-2 has a higher prognostic value than single expression.
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Bengi G, Keles D, Topalak Ö, Yalçin M, Kiyak R, Oktay G. Expressions of TIMP-1, COX-2 and MMP-7 in Colon Polyp and Colon Cancer. Euroasian J Hepatogastroenterol 2016; 5:74-79. [PMID: 29201696 PMCID: PMC5578530 DOI: 10.5005/jp-journals-10018-1138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 04/05/2015] [Indexed: 01/13/2023] Open
Abstract
Objective We aimed to investigate the relationship of expression of matrix metalloproteinase-7 (MMP-7), tissue inhibitor of metalloproteinase-1 (TIMP-1) and cyclooxygenase-2 (COX-2) in colon cancer and its predecessor colon polyp. Materials and methods This study included 29 patients with colon polyp, 19 patients with colon cancer and 65 healthy control subjects. The expressions of MMP-7, TIMP-1 and COX-2 were investigated by real time-polymerase chain reaction (RT-PCR). Results The expressions of TIMP-1, COX-2 and MMP-7 levels were significantly higher in polyp tissue compared to normal tissue (p = 0.024, p < 0.001, p = 0.009, respectively). Expression of TIMP-1, COX-2 and MMP-7 in cancer tissues were higher than both normal tissue and polyp tissue (p = 0.009 and p = 0.001; p < 0.001 and p < 0.001; p = 0.029 and p = 0.008, respectively). In the cancer group, no significant relationship was detected between metastasis and MMP-7, TIMP-1 and COX-2 expressions (p > 0.05). In the polyp tissues, no significant relationship was detected between the histologic type and size of polyps and MMP-7, TIMP-1 and COX-2 levels (p > 0.05). The areas under the receiver operating characteristic (ROC) curve for the cancer group were 0.821 for TIMP-1, 0.888 for COX-2, and 0.880 for MMP-7 (p = 0 < 0.001). Conclusion A role and implication of expressions of MMP-7, COX-2 and TIMP-1 in colon cancer is predicted. How to cite this article Bengi G, Keles D, Topalak Ö, Yalçin M, Kiyak R, Oktay G. Expressions of TIMP-1, COX-2 and MMP-7 in Colon Polyp and Colon Cancer. Euroasian J Hepato-Gastroenterol 2015;5(2):74-79.
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Affiliation(s)
- Gösel Bengi
- Department of Gastroenterology, Dokuz Eylul University Hospital, izmir, Turkey
| | - Didem Keles
- Department of Biochemistry, Dokuz Eylul University Hospital, izmir, Turkey
| | - Ömer Topalak
- Department of Gastroenterology, Dokuz Eylul University Hospital, izmir, Turkey
| | - Mustafa Yalçin
- Department of Gastroenterology, Dokuz Eylul University Hospital, izmir, Turkey
| | - Rabia Kiyak
- Department of Biochemistry, Dokuz Eylul University Hospital, izmir, Turkey
| | - Gülgün Oktay
- Department of Biochemistry, Dokuz Eylul University Hospital, izmir, Turkey
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Zhang Y, Pan KF, Zhang L, Ma JL, Zhou T, Li JY, Shen L, You WC. Helicobacter pylori, cyclooxygenase-2 and evolution of gastric lesions: results from an intervention trial in China. Carcinogenesis 2015; 36:1572-9. [PMID: 26449252 DOI: 10.1093/carcin/bgv147] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 10/01/2015] [Indexed: 12/15/2022] Open
Abstract
To investigate the role of cyclooxygenase (COX)-2/prostaglandin E2 (PGE2) in the process of Helicobacter pylori-induced gastric carcinogenesis, a prospective study based on an intervention trial was conducted in Linqu County, China. A total of 1401 subjects with histopathologic diagnosis were investigated at baseline, among those, 919 completed subsequent interventions (anti-H.pylori and/or celecoxib treatment). Expressions of COX-2 and Ki-67 were assessed by immunohistochemistry, and PGE2 levels were measured by enzyme immunoassay before and after interventions, respectively. We found a grade-response relationship between COX-2 expression level and risk of advanced gastric lesions at baseline. Stratified analysis indicated an additive interaction between COX-2 expression and H.pylori infection on the elevated risk of advanced gastric lesions. The odds ratios (ORs) for both factors combined were 9.31 [95% confidence interval (CI): 4.13-20.95] for chronic atrophic gastritis, 16.26 (95% CI: 7.29-36.24) for intestinal metaplasia and 21.13 (95% CI: 7.87-56.75) for dysplasia, respectively. After interventions, COX-2 expression and Ki-67 labeling index (LI) were decreased in anti-H.pylori group (OR: 1.65, 95% CI: 1.36-1.99 for COX-2; OR: 1.78, 95% CI: 1.49-2.12 for Ki-67) or anti-H.pylori followed by celecoxib group (OR: 1.41, 95% CI: 1.17-1.70 for COX-2; OR: 1.63, 95% CI: 1.37-1.94 for Ki-67). PGE2 levels were decreased in all treatment groups. Furthermore, the regression of gastric lesions was associated with the decrease of COX-2 expression or Ki-67 LI after interventions. Our findings indicate that H.pylori-induced COX-2/PGE2 pathways play an important role on the progression of precancerous gastric lesions in a Chinese population.
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Affiliation(s)
| | | | | | | | | | - Ji-You Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Pathology and
| | - Lin Shen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Oncology, Peking University Cancer Hospital & Institute, Beijing 100142, China
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Nguyen T, Tang Z, Younes M, Alsarraj A, Ramsey D, Fitzgerald S, Kramer JR, El-Serag HB. Esophageal COX-2 expression is increased in Barrett's esophagus, obesity, and smoking. Dig Dis Sci 2015; 60:65-73. [PMID: 25185658 DOI: 10.1007/s10620-014-3333-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 08/11/2014] [Indexed: 01/14/2023]
Abstract
BACKGROUND Increased esophageal cyclooxygenase-2 (COX-2) expression has been associated with Barrett's esophagus (BE); however, it is unknown whether COX-2 expression varies among patient groups with different clinical or socio-demographic factors. METHODS We conducted a case-control study among eligible patients scheduled for elective esophagogastroduodenoscopy and patients eligible for screening colonoscopy recruited from primary clinics. We compared 39 BE tissue samples and 47 squamous tissue samples from BE cases and 240 squamous tissue samples from controls. Clinical and socio-demographic data were prospectively collected. Immunohistochemical staining for esophageal COX-2 was performed and scored. RESULTS The median COX-2 score was significantly higher in BE tissue than squamous tissue from cases or controls (p < 0.001). Median COX-2 expression levels were higher in tissue samples from participants with a waist-to-hip ratio (WHR) in the 2nd tertile [unadjusted odds ratio (OR) 2.04; 95 % confidence interval (95 % CI) 1.17-3.57] and 3rd tertile (unadjusted OR 2.24; 95 % CI 1.20-4.16) compared with the 1st tertile and from current smokers compared with former or non-smokers (unadjusted OR 1.68; 95 % CI 1.03-2.75). In the multivariate analysis, WHRs in the 2nd tertile (OR 1.92; 95 % CI 1.07-3.45) and the 3rd tertile (OR 2.14; 95 % CI 1.10-4.16) were associated with high COX-2 compared with the 1st tertile, as was current smoking (OR 1.78; 95 % CI 1.06-2.97) compared with former and non-smoking. CONCLUSION We found a significant association between elevated esophageal mucosa COX-2 levels and the presence of BE tissue, as well as between elevated COX-2 levels and high WHR and current tobacco smoking. This information may assist in identifying patients likely to benefit from chemoprevention with COX-2 inhibitors.
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Affiliation(s)
- Theresa Nguyen
- Houston VA HSR&D Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey Veterans Affairs Medical Center (MEDVAMC 152), 2002 Holcombe Blvd., Houston, TX, 77030, USA
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Youns M, Fathy GM. Upregulation of extrinsic apoptotic pathway in curcumin-mediated antiproliferative effect on human pancreatic carcinogenesis. J Cell Biochem 2014; 114:2654-65. [PMID: 23794119 DOI: 10.1002/jcb.24612] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 06/11/2013] [Indexed: 12/14/2022]
Abstract
Pancreatic cancer is one of the most lethal human cancers, with almost identical incidence and mortality rates. Curcumin, derived from the rhizome of Curcuma longa, has a long history of use as coloring agent and for a wide variety of disorders. Here, the antiproliferative activity of curcumin and its modulatory effect on gene expression of pancreatic cancer cell lines were investigated. The effect of curcumin on cellular proliferation and viability was monitored by sulphurhodamine B assay. Apoptotic effect was evaluated by flow cytometry and further confirmed by measuring amount of cytoplasmic histone-associated DNA fragments. Analysis of gene expression was performed with and without curcumin treatment using microarray expression profiling techniques. Array results were confirmed by real-time PCR. ingenuity pathway analysis (IPA) has been used to classify the list of differentially expressed genes and to indentify common biomarkergenes modulating the chemopreventive effect of curcumin. Results showed that curcumin induces growth arrest and apoptosis in pancreatic cancer cell lines. Its effect was more obvious on the highly COX-2 expressing cell line. Additionally, the expression of 366 and 356 cancer-related genes, involved in regulation of apoptosis, cell cycle, metastasis, was significantly altered after curcumin treatment in BxPC-3 and MiaPaCa-2 cells, respectively. Our results suggested that up-regulation of the extrinsic apoptotic pathway was among signaling pathways modulating the growth inhibitory effects of curcumin on pancreatic cancer cells. Curcumin effect was mediated through activation of TNFR, CASP 8, CASP3, BID, BAX, and down-regulation of NFκB, NDRG 1, and BCL2L10 genes.
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Affiliation(s)
- Mahmoud Youns
- Department of Functional Genome Analysis, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120, Heidelberg, Germany; Faculty of Pharmacy, Department of Biochemistry and Molecular Biology, Helwan University, Cairo, Egypt
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Lobo Prabhu KC, Vu L, Chan SK, Phang T, Gown A, Jones SJ, Wiseman SM. Predictive utility of cyclo-oxygenase-2 expression by colon and rectal cancer. Am J Surg 2014; 207:712-6. [DOI: 10.1016/j.amjsurg.2013.12.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 12/16/2013] [Accepted: 12/17/2013] [Indexed: 01/23/2023]
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Mutoh H, Sashikawa M, Sakamoto H, Tateno T. Cyclooxygenase 2 in gastric carcinoma is expressed in doublecortin- and CaM kinase-like-1-positive tuft cells. Gut Liver 2014; 8:508-18. [PMID: 25228975 PMCID: PMC4164254 DOI: 10.5009/gnl13237] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Revised: 09/04/2013] [Accepted: 09/05/2013] [Indexed: 12/13/2022] Open
Abstract
Background/Aims Doublecortin and CaM kinase-like-1 (DCAMKL1) is a marker of stem cells expressed predominantly in the crypt base in the intestine. However, DCAMKL1-positive cells have been shown to be differentiated tuft cells rather than quiescent progenitors. Tuft cells are the only epithelial cells that express cyclooxygenase 2 (COX-2) in the normal intestinal epithelium. We previously generated Cdx2-transgenic mice as model mice for intestinal metaplasia and gastric carcinoma. In the current study, we investigated the association between COX-2 and DCAMKL1 in gastric carcinoma. Methods We examined the association between COX-2 and DCAMKL1 expression in gastric carcinomas in clinical samples (early gastric well-differentiated adenocarcinoma) and Cdx2-transgenic mice; and the DCAMKL1-transgenic mouse stomach using immunohistochemistry and quantitative real-time polymerase chain reaction. Results The COX-2-expressing cells were scattered, not diffusely expressed, in gastric carcinomas from humans and Cdx2-transgenic mice. DCAMKL1-positive cells were also scattered in the gastric carcinomas, indicating that tuft cells could still be present in gastric carcinoma. COX-2 was expressed in DCAMKL1-positive tuft cells in Cdx2- and DCAMKL1-transgenic mouse stomachs, whereas the Sox9 transcription factor was ubiquitously expressed in gastric carcinomas, including COX-2-positive cells. Conclusions COX-2 is expressed in DCAMKL1-expressing quiescent tuft cells in gastric carcinoma.
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Affiliation(s)
- Hiroyuki Mutoh
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Miho Sashikawa
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Hirotsugu Sakamoto
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Tomoko Tateno
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
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α-Dihydroxychalcone-glycoside (α-DHC) isolated from the heartwood of Pterocarpus marsupium inhibits LPS induced MAPK activation and up regulates HO-1 expression in murine RAW 264.7 macrophage. Toxicol Appl Pharmacol 2014; 277:95-107. [PMID: 24675710 DOI: 10.1016/j.taap.2014.03.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 03/07/2014] [Accepted: 03/12/2014] [Indexed: 01/01/2023]
Abstract
Three phenolic glycosides isolated from the heartwood of Pterocarpus marsupium showed significant free radical and superoxide ion scavenging activity and antioxidant potential that were comparable to, or several folds higher than those of standard antioxidants, trolox and ascorbic acid. The effective concentrations of these compounds were far below their cytotoxic levels. Compound 3, which was characterized to be α-dihydroxychalcone-glycoside (α-DHC), was the most potent one. Subsequent studies demonstrated that α-DHC effectively reduced nitric oxide and cytokine production by the LPS stimulated RAW 264.7 mouse macrophage cell line. The compound effectively attenuated the expression of inflammation-mediating enzymes COX-2 and iNOS at the mRNA as well as protein levels in a concentration dependent manner. It prevented phosphorylation of all the three MAPKs (JNK, ERK, p38) and eventually blocked the activation of downstream elements contributing to inflammation. Phosphorylation of IκB-α and subsequent translocation of NF-κB into the nucleus were restricted, while the expression of stress responsive gene HO-1 was up-regulated. α-DHC targeted Keap-1 by modifying its cysteine thiols, dissociating it from Nrf-2 and facilitating nuclear entry of the latter; and this in turn induced HO-1 expression. Thus α-DHC exerts its anti-inflammatory activity in a dual manner: by down regulating MAPKs and restricting nuclear stabilization of NF-κB at one end, and by disrupting Nrf-2-Keap-1 complex on the other. In conclusion, the anti-inflammatory potential together with its high therapeutic index envisages α-DHC as a prospective candidate molecule for the development of therapeutic strategy against inflammatory disorders.
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Song J, Su H, Zhou YY, Guo LL. Cyclooxygenase-2 expression is associated with poor overall survival of patients with gastric cancer: a meta-analysis. Dig Dis Sci 2014; 59:436-45. [PMID: 24178897 DOI: 10.1007/s10620-013-2917-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 10/07/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND Cyclooxygenase-2 (COX-2) is believed to be involved in gastric carcinogenesis. However, it is still controversial whether COX-2 expression can be regarded as a prognostic factor for gastric cancer patients. AIM To obtain a more accurate relationship between COX-2 overexpression and prognosis in gastric cancer by meta-analysis. METHOD Relevant articles published up to May 2013 were searched by use of several keywords in electronic databases. Separate hazard ratio (HR) estimates and 95 % confidence intervals (95 % CI) for COX-2 overexpression and overall survival (OS) and disease-free survival (DFS) with gastric cancer were extracted. Combined HR with 95 % CI was calculated by use of Stata11.0 software to estimate the size of the effect. Publication bias testing and sensitivity analysis were also performed. RESULTS A total of 27 studies which included 3,891 gastric cancer patients were combined in the final analysis. Combined results suggested that COX-2 overexpression was associated with an unfavorable OS (HR 1.58, 95 % CI 1.36-1.84) but not DFS (HR 1.15, 95 % CI 0.93-1.43) among patients with gastric cancer. Publication bias was absent. Sensitivity analysis suggested that the results of this meta-analysis were robust. CONCLUSIONS The results of this meta-analysis suggest that high COX-2 expression may be an independent risk factor for poor OS of patients with gastric cancer. More large prospective studies are now needed to further clarify the prognostic value of COX-2 expression for DFS in gastric cancer.
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Affiliation(s)
- Jian Song
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 69 Meishan Road, Hefei, 230032, Anhui Province, China
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Roelofs HMJ, Te Morsche RHM, van Heumen BWH, Nagengast FM, Peters WHM. Over-expression of COX-2 mRNA in colorectal cancer. BMC Gastroenterol 2014; 14:1. [PMID: 24383454 PMCID: PMC3880419 DOI: 10.1186/1471-230x-14-1] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 12/20/2013] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Cyclooxygenase-2 (COX-2, PTGS2) is an enzyme involved in the synthesis of prostaglandins and thromboxanes, which are regulators of biologic processes such as inflammation, cell proliferation and angiogenesis. COX-2 over-expression was reported in many (pre) malignant tissues, but data strongly vary and seem to depend on the methodology used. METHODS Normal colorectal mucosa and paired cancerous tissue from 60 patients with colorectal cancer was investigated for the levels of COX-2 mRNA by real-time quantitative Polymerase Chain Reaction (qPCR). COX-2 levels were expressed relative to either: tissue weight or levels of the housekeeping genes beta-2 microglobulin (B2M) and glyceraldehyde-3-phosphate dehydrogenase (GAPDH). RESULTS COX-2 mRNA levels, normalized with respect to tissue weight or mRNA levels of the housekeeping genes B2M or GAPDH, were over-expressed in 80%, 70% and 40% of the colorectal tumor tissues, as compared to the paired adjacent normal colorectal mucosa samples, respectively. Highest mRNA COX-2 ratios tumor/normal were measured when expressed per mg tissue (mean ratio 21.6). When normalized with respect to the housekeeping genes B2M or GAPDH, mean tumor/normal ratios were 16.1 and 7.5, respectively. CONCLUSION Expression of COX-2 mRNA levels per mg tissue is most simple in comparison to normalization with respect to the housekeeping genes B2M or GAPDH. Levels of COX-2 mRNA are found over-expressed in almost 80% of the colorectal tumors, compared to paired adjacent normal colorectal mucosa, suggesting a role of COX-2 as a potential biomarker for cancer risk, whereas inhibitors of COX-2 could be of value in chemoprevention of colon cancer.
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Affiliation(s)
| | | | | | | | - Wilbert H M Peters
- Department of Gastroenterology, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands.
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Increase of cyclooxygenase-2 inhibition with celecoxib combined with 5-FU enhances tumor cell apoptosis and antitumor efficacy in a subcutaneous implantation tumor model of human colon cancer. World J Surg Oncol 2013; 11:16. [PMID: 23347845 PMCID: PMC3599060 DOI: 10.1186/1477-7819-11-16] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 01/06/2013] [Indexed: 12/02/2022] Open
Abstract
Background The purpose of this study was to investigate the anti-tumor effect and explore the mechanisms of celecoxib (a selective cyclooxygenase-2 inhibitor) combined with 5-fluorouracil (5-FU) on the treatment of human colorectal cancer in a BALB/C nude mouse subcutaneous xenograft model. Methods Effects of celecoxib combined with 5-FU on the proliferation of xenograft carcinoma induced by HT-29 were investigated. The apoptotic cells were detected by electron microscope and TUNEL (terminal deoxynucleotidyl transferase dUTP nick end labeling) assay. Immunohistochemistry and Western blot were used to estimate the expression of cytochrome C, caspase-3 and caspase-9. Results Compared with the control group, treatment groups showed significant inhibition of tumor growth. More apoptotic cells existed after treatment with celecoxib combined with 5-FU. Cytochrome C, caspase-3 and caspase-9 were increased in treated groups, and more obviously in the drug combination group. Cyclooxygenase-2 (COX-2) were decreased after treatment with celecoxib only or combined with 5-FU. And the combined group showed a greater decrease. Conclusions Celecoxib combined with 5-FU could inhibit the growth of tumors in vivo by inducing apoptosis and activation of the cytochrome C dependency apoptosis signal pathway. A decrease of COX-2 and an increase of cytochrome C, caspase-3 and caspase-9 may be involved in this process.
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Rao CV, Patlolla JM, Cooma I, Kawamori T, Steele VE. Prevention of Familial Adenomatous Polyp Development inAPCminMice and Azoxymethane-Induced Colon Carcinogenesis in F344 Rats by ω-3 Fatty Acid Rich Perilla Oil. Nutr Cancer 2013; 65 Suppl 1:54-60. [DOI: 10.1080/01635581.2013.785009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Do proton pump inhibitors protect against cancer progression in GERD? Surg Today 2012; 43:831-7. [DOI: 10.1007/s00595-012-0395-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Accepted: 07/29/2012] [Indexed: 12/20/2022]
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Heo SH, Jeong ES, Lee KS, Seo JH, Jeong DG, Won YS, Kwon HJ, Kim HC, Kim DY, Choi YK. Canonical Wnt signaling pathway plays an essential role in N-methyl-N-nitrosurea induced gastric tumorigenesis of mice. J Vet Med Sci 2012; 75:299-307. [PMID: 23117827 DOI: 10.1292/jvms.12-0233] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Deregulated Wnt signaling pathway is implicated in many hereditary diseases and tumorigenesis including colorectal cancer, hepatocellular carcinoma and gastric cancer. In this study, to assess the relationship between chemically induced gastric tumor and canonical Wnt signaling pathway in genetically intact mice, histopathological and quantitative mRNA analyses were performed in C57BL/6J mice given drinking water containing N-methyl- N-nitrosurea (MNU). 60.5% of gastric adenoma and 27.9% of adenocarcinoma were observed 48 weeks after first administration. Also, in immunohistochemical analysis, aberrant expressions of phospho-GSK-3β, β-catenin, cyclin D1, c-Myc, osteopontin and COX-2 were found. In double immunofluorescent-antibody stains, β-catenin accumulation was colocalized with other proteins. mRNA levels of cyclin D1, c-myc and COX-2 were relatively higher in adenocarcinoma. Altogether, canonical Wnt pathway was highly involved in MNU induced gastric neoplasia of C57BL/6J mice, and it could be a considerably suitable system for the study to examine the linkage between gastric tumorigenesis and the canonical Wnt pathway.
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Affiliation(s)
- Seung-Ho Heo
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 143-701, Republic of Korea
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Yu LX, Zhou L, Li M, Li ZW, Wang DS, Zhang SG. The Notch1/cyclooxygenase-2/Snail/E-cadherin pathway is associated with hypoxia-induced hepatocellular carcinoma cell invasion and migration. Oncol Rep 2012; 29:362-70. [PMID: 23124652 DOI: 10.3892/or.2012.2103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 09/03/2012] [Indexed: 11/06/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common malignancies worldwide; however, the prognosis of HCC patients remains poor. This poor prognosis is mainly attributed to the high rate of intrahepatic and distant metastasis. HCC often occurs in a hypoxic environment and hypoxia can activate metastatic programs, ultimately leading to tumor recurrence or metastasis. Thus, the discovery and subsequent development of novel agents to block HCC invasion and migration are the primary objectives of hepatic cancer research. The Notch1 signaling pathway might be involved in hypoxia-induced carcinoma metastasis. However, the mechanisms by which Notch1 mediates cell metastasis, particularly in hepatocellular carcinoma, are not yet entirely clear. The results of the present study show that hypoxia increases the invasion and migration capacities of different HCC cells. Activation of the Notch1 signaling pathway contributes to hypoxia-induced invasion and migration in HCC cells. The activated Notch1 signaling pathway can regulate Snail/E-cadherin through cyclooxygenase-2 (COX-2) under hypoxic conditions. The above results suggest that the Notch1/COX-2/Snail/E-cadherin pathway is possibly associated with hypoxia-induced invasion and migration in HCC cells. Thus, targeting Notch1 may be useful for devising novel preventive and therapeutic strategies for HCC.
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Affiliation(s)
- Ling-Xiang Yu
- Department of Hepatobiliary Surgery, 302 Hospital of PLA, Beijing 100039, PR China
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García-González MA, Nicolás-Pérez D, Lanas A, Bujanda L, Carrera P, Benito R, Strunk M, Sopeña F, Santolaria S, Piazuelo E, Jiménez P, Campo R, Espinel J, Manzano M, Geijo F, Pellisé M, González-Huix F, Espinós J, Zaballa M, Titó L, Barranco L, Pazo R, Quintero E. Prognostic role of host cyclooxygenase and cytokine genotypes in a Caucasian cohort of patients with gastric adenocarcinoma. PLoS One 2012; 7:e46179. [PMID: 23029430 PMCID: PMC3460851 DOI: 10.1371/journal.pone.0046179] [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: 08/25/2011] [Accepted: 08/30/2012] [Indexed: 12/14/2022] Open
Abstract
Background Genetic factors influencing the prognosis of gastric adenocarcinoma (GAC) are not well known. Given the relevance of cytokines and other pro-inflammatory mediators in cancer progression and invasiveness, we aimed to assess the prognostic role of several functional cytokine and cyclooxygenase gene polymorphisms in patients with GAC. Methodology Genomic DNA from 380 Spanish Caucasian patients with primary GAC was genotyped for 23 polymorphisms in pro-inflammatory (IL1B, TNFA, LTA, IL6, IL12p40), anti-inflammatory (IL4, IL1RN, IL10, TGFB1) cytokine, and cyclooxygenase (PTGS1 and PTGS2) genes by PCR, RFLP and TaqMan assays. Clinical and histological information was collected prospectively. Survival curves were estimated by the Kaplan-Meier method and compared using the log rank test. Outcome was determined by analysis of Cox proportional hazards, adjusting for confounding factors. Results The median follow-up period and median overall survival (OS) time were 9.9 months (range 0.4–120.3) and 10.9 months (95% CI: 8.9–14.1), respectively. Multivariate analysis identified tumor stages III (HR, 3.23; 95% CI:2–5.22) and IV (HR, 5.5; 95% CI: 3.51–8.63) as independent factors associated with a significantly reduced OS, whereas surgical treatment (HR: 0.44; 95%CI: 0.3–0.6) was related to a better prognosis of the disease. Concerning genetic factors, none of the 23 polymorphisms evaluated in the current study did influence survival. Moreover, no gene-environment interactions on GAC prognosis were observed. Conclusions Our results show that, in our population, the panel of selected pro- and anti-inflammatory cytokine, and cyclooxygenase gene polymorphisms are not relevant in determining the prognosis of gastric adenocarcinoma.
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Liu HP, Gao ZH, Cui SX, Sun DF, Wang Y, Zhao CR, Lou HX, Qu XJ. Inhibition of intestinal adenoma formation in APC(Min/+) mice by Riccardin D, a natural product derived from liverwort plant Dumortiera hirsuta. PLoS One 2012; 7:e33243. [PMID: 22432006 PMCID: PMC3303813 DOI: 10.1371/journal.pone.0033243] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2011] [Accepted: 02/06/2012] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Mutation of tumor suppressor gene, adenomatous polyposis coli (APC), is the primary molecular event in the development of most intestinal carcinomas. Animal model with APC gene mutation is an effective tool for study of preventive approaches against intestinal carcinomas. We aimed to evaluate the effect of Riccardin D, a macrocyclic bisbibenzyl compound, as a chemopreventive agent against intestinal adenoma formation in APC(Min/+) mice. METHODS APC(Min/+) mice were given Riccardin D by p.o. gavage for 7 weeks. Mice were sacrificed, and the number, size and histopathology of intestinal polyps were examined under a microscope. We performed immunohistochemical staining, western blotting, reverse transcriptase-polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA) in intestinal polyps to investigate the mechanism of chemopreventive effect of Riccardin D. RESULTS Riccardin D treatment resulted in a significant inhibition of intestinal adenoma formation, showing a reduction of polyp number by 41.7%, 31.1% and 44.4%, respectively, in proximal, middle and distal portions of small intestine. The activity of Riccardin D against polyp formation was more profound in colon, wherein Riccardin D decreased polyp number by 79.3%. Size distribution analysis revealed a significant reduction in large-size polyps (2-3 mm) by 40.0%, 42.5% and 33.3%, respectively, in proximal, middle and distal portions of small intestine, and 77.8% in colon. Histopathological analysis of the intestinal polyps revealed mostly hyperplastic morphology without obvious dysplasia in Riccardin D-treated mice. Molecular analyses of the polyps suggested that the inhibitory effect of Riccardin D on intestinal adenoma formation was associated with its abilities of reduction in cell proliferation, induction of apoptosis, antiangiogenesis, inhibition of the Wnt signaling pathway and suppression of inflammatory mediators in polyps. CONCLUSIONS Our results suggested that Riccardin D exerts its chemopreventive effect against intestinal adenoma formation through multiple mechanisms including anti-proliferative, apoptotic, anti-angiogenic and anti-inflammatory activity.
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Affiliation(s)
- Hui-Ping Liu
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Zu-Hua Gao
- Department of Pathology and Laboratory Medicine, University of Calgary and Calgary Laboratory Services, Calgary, Alberta, Canada
| | - Shu-Xiang Cui
- Department of Pharmacology, Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan, China
| | - De-Fu Sun
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Yan Wang
- Department of Pharmacology, Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan, China
| | - Cui-Rong Zhao
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Hong-Xiang Lou
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Xian-Jun Qu
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, China
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Chen L, Wang X, Wang H, Li Y, Yan W, Han L, Zhang K, Zhang J, Wang Y, Feng Y, Pu P, Jiang T, Kang C, Jiang C. miR-137 is frequently down-regulated in glioblastoma and is a negative regulator of Cox-2. Eur J Cancer 2012; 48:3104-11. [PMID: 22406049 DOI: 10.1016/j.ejca.2012.02.007] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 02/03/2012] [Accepted: 02/06/2012] [Indexed: 12/22/2022]
Abstract
MicroRNAs are strongly implicated in cancer but their specific roles and functions in the major cancers have yet to be fully elucidated. In this study, we defined the expression and function of miR-137, which we found to be downregulated in glioma samples and glioma cells by qRT-PCR. Ectopic expression of miR-137 in glioma cell lines inhibited proliferation and invasion. Using computational and expression analysis, Cox-2 was identified as a candidate target of miR-137. Reporter assay with 3'UTR of Cox-2 cloned downstream of the luciferase gene showed reduced luciferase activity in the presence of miR-137, providing strong evidence that miR-137 was a direct regulator of Cox-2. Expression analysis further revealed that Cox-2 was elevated in glioma and associated with survival of patients. Furthermore, we observed that Cox-2 knockdown resulted in effects similar to those with miR-137 transfection in glioma cells. In conclusion, our study demonstrates that miR-137 deregulation is common in glioma, and restoration of its function inhibits cell proliferation and invasion, suggesting that miR-137 may act as a tumour suppressor.
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Affiliation(s)
- Lingchao Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
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Influence of age and gender on association between -765G > C COX-2 genetic polymorphism and gastric adenocarcinoma risk: a case-control study in Iran. GASTROENTEROLOGY AND HEPATOLOGY FROM BED TO BENCH 2012; 5:29-34. [PMID: 24834195 PMCID: PMC4017443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Accepted: 11/18/2011] [Indexed: 12/02/2022]
Abstract
AIM The purpose of this study was to investigate the possible influence of age and gender on association between -765G > C COX-2 genetic polymorphism and gastric adenocarcinoma risk in Iranian patients. BACKGROUND The promoter polymorphism of COX-2 gene -765G > C has been described to play an important role in many cancers such as gastric cancer. PATIENTS AND METHODS We carried out single-nucleotide polymorphism analysis in Iranian samples including 91 patients and 91 control normal using PCR- RFLP technique. RESULTS Statistical analysis revealed no significant association between GG, GC and CC genotypes and risk of gastric adenocarcinoma. However differences were considered significant (P=0.043) for female subjects with C carrier genotypes (GC and CC) and gastric adenocarcinoma when compared with male patients (P=0.645) and control groups (P=0.653). Also, there was a statistically significant difference between increasing of age and susceptibility for gastric adenocarcinoma (Odd Ratio=1.125, 95% CI=1.089-1.162). CONCLUSION These results suggested that Iranian C carrier females can be more susceptible for gastric adenocarcinoma in comparison with control group. Also increasing of age should be considered as a risk factor for this disease.
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Macke RA, Nason KS, Mukaisho KI, Hattori T, Fujimura T, Sasaki S, Oyama K, Miyashita T, Ohta T, Miwa K, Gibson MK, Zaidi A, Malhotra U, Atasoy A, Foxwell T, Jobe B. Barrett's esophagus and animal models. Ann N Y Acad Sci 2011; 1232:392-400. [PMID: 21950831 DOI: 10.1111/j.1749-6632.2011.06061.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The following on Barrett's esophagus (BE) and animal models contains commentaries on the factors of BE carcinogenesis; a duodenoesophageal reflux model; translation of targeted therapies for esophageal adenocarcinoma; and novel target regimens selected through a proteomics screen.
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Affiliation(s)
- Ryan A Macke
- Esophageal Cancer Program, University of Pittsburgh and University of Pittsburgh Medical Center, Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
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Chajès V, Jenab M, Romieu I, Ferrari P, Dahm CC, Overvad K, Egeberg R, Tjønneland A, Clavel-Chapelon F, Boutron-Ruault MC, Engel P, Teucher B, Kaaks R, Floegel A, Boeing H, Trichopoulou A, Dilis V, Karapetyan T, Mattiello A, Tumino R, Grioni S, Palli D, Vineis P, Bueno-de-Mesquita HB, Numans ME, Peeters PHM, Lund E, Navarro C, Quirós JR, Sánchez-Cantalejo E, Gurrea AB, Dorronsoro M, Regnér S, Sonestedt E, Wirfält E, Khaw KT, Wareham N, Allen NE, Crowe FL, Rinaldi S, Slimani N, Carneiro F, Riboli E, González CA. Plasma phospholipid fatty acid concentrations and risk of gastric adenocarcinomas in the European Prospective Investigation into Cancer and Nutrition (EPIC-EURGAST). Am J Clin Nutr 2011; 94:1304-13. [PMID: 21993438 DOI: 10.3945/ajcn.110.005892] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Epidemiologic data suggest that diet is a risk factor in the etiology of gastric cancer. However, the role of dietary fatty acids, a modifiable risk factor, remains relatively unexplored. OBJECTIVE The objective of this study was to determine the association of plasma phospholipid fatty acid concentrations, as biomarkers of exogenous and endogenously derived fatty acids, with the risk of gastric adenocarcinoma in a case-control study nested within the European Prospective Investigation into Cancer and Nutrition-Europe Gastric Cancer (EPIC-EURGAST). DESIGN Fatty acids were measured by gas chromatography in prediagnostic plasma phospholipids from 238 cases matched to 626 controls by age, sex, study center, and date of blood donation. Conditional logistic regression models adjusted for Helicobacter pylori infection status, BMI, smoking, physical activity, education, and energy intake were used to estimate relative cancer risks. RESULTS Positive risk associations for gastric cancer were observed in the highest compared with the lowest quartiles of plasma oleic acid (OR: 1.72; 95% CI: 1.01, 2.94), di-homo-γ-linolenic acid (OR: 1.92; 95% CI: 1.10, 3.35), α-linolenic acid (OR: 3.20; 95% CI: 1.70, 6.06), and the ratio of MUFAs to saturated fatty acids, as an indicator of stearoyl-CoA desaturase-1 enzyme activity (OR: 1.40; 95% CI: 0.81, 2.43). An inverse risk association was observed with the ratio of linoleic to α-linolenic acid (OR: 0.37; 95% CI: 0.20, 0.66). CONCLUSION These data suggest that a specific prediagnostic plasma phospholipid fatty acid profile, characterized mainly by high concentrations of oleic acid, α-linolenic acid, and di-homo-γ-linolenic acid, which presumably reflect both a complex dietary pattern and altered fatty acid metabolism, may be related to increased gastric cancer risk.
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Affiliation(s)
- Véronique Chajès
- Nutrition and Metabolism, International Agency for Research on Cancer, Lyon, France.
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Tseng YC, Tsai YH, Tseng MJ, Hsu KW, Yang MC, Huang KH, Li AFY, Chi CW, Hsieh RH, Ku HH, Yeh TS. Notch2-induced COX-2 expression enhancing gastric cancer progression. Mol Carcinog 2011; 51:939-51. [PMID: 21976141 DOI: 10.1002/mc.20865] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 08/31/2011] [Accepted: 09/13/2011] [Indexed: 12/12/2022]
Abstract
Gastric carcinoma is one of the most common and mortal types of malignancy worldwide. To date, the mechanisms controlling its aggressiveness are not yet fully understood. Notch signal pathway can function as either an oncogene or a tumor suppressor in tumorigenesis. Four members (Notch1-4) of Notch receptors were found in mammals and each exhibits distinct roles in tumor progression. Previous study showed that the activated Notch1 receptor promoted gastric cancer progression through cyclooxygenase-2 (COX-2). This study addressed whether Notch2 signal pathway is also involved in gastric cancer progression. Constitutive expression of Notch2 intracellular domain (N2IC), the activated form of Notch2 receptor, promoted both cell proliferation and xenografted tumor growth of human stomach adenocarcinoma SC-M1 cells. The colony formation, migration, invasion, and wound-healing abilities of SC-M1 cells were enhanced by N2IC expression, whereas these abilities were suppressed by Notch2 knockdown. Similarly, Notch2 knockdown inhibited cancer progressions of AGS and AZ521 gastric cancer cells. Expression of N2IC also caused epithelial-mesenchymal transition in SC-M1 cells. Furthermore, N2IC bound to COX-2 promoter and induced COX-2 expression through a CBF1-dependent manner in SC-M1 cells. The ability of N2IC to enhance tumor progression in SC-M1 cells was suppressed by knockdown of COX-2 or treatment with NS-398, a COX-2 inhibitor. Moreover, the suppression of tumor progression by Notch2 knockdown in SC-M1 cells was reversed by exogenous COX-2 or its major enzymatic product PGE(2) . Taken together, this study is the first to demonstrate that the Notch2-COX-2 signaling axis plays an important role in controlling gastric cancer progression.
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Affiliation(s)
- Yun-Chien Tseng
- Department of Anatomy and Cell Biology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
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COX-derived prostanoid pathways in gastrointestinal cancer development and progression: novel targets for prevention and intervention. Biochim Biophys Acta Rev Cancer 2011; 1825:49-63. [PMID: 22015819 DOI: 10.1016/j.bbcan.2011.09.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 09/22/2011] [Accepted: 09/24/2011] [Indexed: 12/27/2022]
Abstract
Arachidonic acid metabolism through cyclooxygenase (COX) pathways leads to the generation of biologically active eicosanoids. Eicosanoid expression levels vary during development and progression of gastrointestinal (GI) malignancies. COX-2 is the major COX-isoform responsible for G.I. cancer development/progression. COX-2 expression increases during progression from a normal to cancerous state. Evidence from observational studies has demonstrated that chronic NSAID use reduces the risk of cancer development, while both incidence and risk of death due to G.I. cancers were significantly reduced by daily aspirin intake. A number of randomized controlled trials (APC trial, Prevention of Sporadic Adenomatous Polyps trial, APPROVe trial) have also shown a significant protective effect in patients receiving selective COX-2 inhibitors. However, chronic use of selective COX-2 inhibitors at high doses was associated with increased cardiovascular risk, while NSAIDs have also been associated with increased risk. More recently, downstream effectors of COX-signaling have been investigated in cancer development/progression. PGE(2), which binds to both EP and PPAR receptors, is the major prostanoid implicated in the carcinogenesis of G.I. cancers. The role of TXA(2) in G.I. cancers has also been examined, although further studies are required to uncover its role in carcinogenesis. Other prostanoids investigated include PGD(2) and its metabolite 15d-PGJ2, PGF(1α) and PGI(2). Targeting these prostanoids in G.I. cancers has the promise of avoiding cardiovascular toxicity associated with chronic selective COX-2 inhibition, while maintaining anti-tumor reactivity. A progressive sequence from normal to pre-malignant to a malignant state has been identified in G.I. cancers. In this review, we will discuss the role of the COX-derived prostanoids in G.I. cancer development and progression. Targeting these downstream prostanoids for chemoprevention and/or treatment of G.I. cancers will also be discussed. Finally, we will highlight the latest pre-clinical technologies as well as avenues for future investigation in this highly topical research field.
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Liang Y, Liu JL, Wu Y, Zhang ZY, Wu R. Cyclooxygenase-2 polymorphisms and susceptibility to esophageal cancer: a meta-analysis. TOHOKU J EXP MED 2011; 223:137-44. [PMID: 21304218 DOI: 10.1620/tjem.223.137] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Esophageal cancer (EC) is one of the most common cancers worldwide with 5-year survival rate less than 10%. However, there is a lack of specific genetic markers that could help better understanding the mechanisms of esophageal carcinogenesis, improving the detection rate of EC, and distinguishing histological types. Cyclooxygenase-2 (COX-2) as an inducible enzyme in cancer development and progression is involved in esophageal carcinogenesis. A large number of studies have demonstrated a strong association between COX-2 polymorphisms and EC risk. However, the overall results are still controversial. This controversy may be partly due to the mix-up of esophageal squamous cell carcinoma (ESCC) and adenocarcinoma (EAC). The aim of this study was to investigate the association between COX-2 polymorphisms and susceptibility to ESCC or EAC by conducting a meta-analysis. Seven studies were retrieved reporting a total of 1450 ESCC patients, 523 EAC patients, and 2663 cancer-free control subjects. Five COX-2 polymorphisms were addressed, including -765G>C (rs20417), -1195G>A (rs689465), -1290A>G (rs689466), -8473T>C (rs5275) and -1759G>A (rs3218625). Meta-analysis results showed that the -765C allele is significantly associated with the susceptibility to both ESCC and EAC especially in Asian populations. In addition, there was a significant association between the -8473C allele and the susceptibility to EAC in Caucasian populations. In conclusion, our meta-analysis suggests that the -765C allele of the COX-2 gene might be a potential risk factor for both ESCC and EAC especially in Asian populations, while the -8473C allele might be a risk factor for EAC in Caucasian populations.
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Affiliation(s)
- Yuan Liang
- Department of Oncology, the Shengjing Affiliated Hospital of China Medical University, Shenyang, China
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Wong VKW, Cheung SSF, Li T, Jiang ZH, Wang JR, Dong H, Yi XQ, Zhou H, Liu L. Asian ginseng extract inhibits in vitro and in vivo growth of mouse lewis lung carcinoma via modulation of ERK-p53 and NF-κB signaling. J Cell Biochem 2011; 111:899-910. [PMID: 20665661 DOI: 10.1002/jcb.22778] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Asian ginseng (AG) is the most commonly used medicinal herb in Asian countries. It is often prescribed for cancer patients as a complementary remedy. However, whether AG in fact benefits cancer patients remains unknown because some studies reported that AG facilitates tumor growth, which contradicts its usage as a dietary remedy to cancer patients. In addition, most of research works on ginseng for anti-cancer were using single ginsenoside rather than whole root extracts used in clinics. Thus, intensive studies using the type of ginseng as its clinical form are necessary to validate its benefits to cancer patients. In this study, anti-tumor potency and underlying molecular mechanisms of the ethanol extract of AG (EAG) were examined in mice with Lewis lung carcinoma (LLC-1). We showed that EAG significantly suppressed tumor growth in LLC-1-bearing mice with concomitant down-regulation of PCNA proliferative marker, and it exhibited specific cytotoxicity to cancer cells. EAG also induced MAPK and p53 signaling in LLC-1 cells, which suppressed cyclin B-cdc2 complex and in turn induced G2-M arrest and apoptosis. Although EAG could activate NF-κB signaling, the proteasome inhibitor of MG-132 could effectively prevent NF-κB targeted gene expression induced by EAG and then sensitize LLC-1 cells to induce EAG-mediated apoptosis. Collectively, EAG in a relatively high dose significantly suppressed tumor growth in LLC-1-bearing mice, indicating that AG may benefit lung cancer patients as a dietary supplement. This is the first report demonstrating possible combination of EAG with proteasome inhibitors could be a novel strategy in anti-cancer treatment.
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Affiliation(s)
- Vincent Kam Wai Wong
- Centre for Cancer and Inflammation Research, School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong, China
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Liu JL, Liang Y, Wang ZN, Zhou X, Xing LL. Cyclooxygenase-2 polymorphisms and susceptibility to gastric carcinoma: A meta-analysis. World J Gastroenterol 2010; 16:5510-7. [PMID: 21086572 PMCID: PMC2988247 DOI: 10.3748/wjg.v16.i43.5510] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the association of the cyclooxygenases-2 (COX-2) polymorphisms and susceptibility to gastric cancer (GC) by means of meta-analysis.
METHODS: Publications addressing the association between polymorphisms of COX-2 and susceptibility to GC were selected from the MEDLINE, EMBASE and CBMdisc databases. Data was extracted from the studies by 2 independent reviewers. The meta-analyses were performed by RevMan 5.0.23. From these data, odds ratio (OR) with 95% confidence interval (CI) was calculated.
RESULTS: Ten studies were retrieved reporting a total of 11 COX-2 polymorphisms. Carriers of -765C, -1195A, -1290G, *2430T alleles and *429TT genotype revealed increased risk for GC (OR = 1.71, 95% CI: 1.01-2.90, P = 0.05; OR = 1.58, 95% CI: 1.05-2.38, P = 0.03; OR = 1.55, 95% CI: 1.01-2.39, P = 0.05; OR = 2.62, 95% CI: 1.20-5.73, P = 0.02 and OR = 0.74, 95% CI: 0.59-0.95, P = 0.02, respectively).
CONCLUSION: The -765C, -1195A, -1290G, *2430T alleles and *429TT genotype of COX-2 polymorphisms were determined a significant association with susceptibility to GC.
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Sansom SE, Nuovo GJ, Martin MM, Kotha SR, Parinandi NL, Elton TS. miR-802 regulates human angiotensin II type 1 receptor expression in intestinal epithelial C2BBe1 cells. Am J Physiol Gastrointest Liver Physiol 2010; 299:G632-42. [PMID: 20558762 PMCID: PMC2950689 DOI: 10.1152/ajpgi.00120.2010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Accepted: 06/15/2010] [Indexed: 01/31/2023]
Abstract
Studies have demonstrated that angiotensin II (Ang II) can regulate intestinal fluid and electrolyte transport and control intestinal wall muscular activity. Ang II is also a proinflammatory mediator that participates in inflammatory responses such as apoptosis, angiogenesis, and vascular remodeling; accumulating evidence suggests that this hormone may be involved in gastrointestinal (GI) inflammation and carcinogenesis. Ang II binds to two distinct G protein-coupled receptor subtypes, the AT(1)R and AT(2)R, which are widely expressed in the GI system. Together these studies suggest that Ang II-AT(1)R/-AT(2)R actions may play an important role in GI tract physiology and pathophysiology. Currently it is not known whether miRNAs can regulate the expression of the human AT(1)R (hAT(1)R) in the GI system. PCR and in situ hybridization experiments demonstrated that miR-802 was abundantly expressed in human colon and intestine. Luciferase reporter assays demonstrated that miR-802 could directly interact with the bioinformatics-predicted target site harbored within the 3'-untranslated region of the hAT(1)R mRNA. To validate that the levels of miR-802 were physiologically relevant in the GI system, we demonstrated that miR-802 "loss-of-function" experiments resulted in augmented hAT(1)R levels and enhanced Ang II-induced signaling in a human intestinal epithelial cell line. These results suggest that miR-802 can modulate the expression of the hAT(1)R in the GI tract and ultimately play a role in regulating the biological efficacy of Ang II in this system.
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Affiliation(s)
- Sarah E Sansom
- Davis Heart and Lung Research Institute, Department of Pathology, The Ohio State Univ., Columbus, 43210, USA
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Hsu KW, Hsieh RH, Wu CW, Chi CW, Lee YHW, Kuo ML, Wu KJ, Yeh TS. MBP-1 suppresses growth and metastasis of gastric cancer cells through COX-2. Mol Biol Cell 2010; 20:5127-37. [PMID: 19846662 DOI: 10.1091/mbc.e09-05-0386] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The c-Myc promoter binding protein 1 (MBP-1) is a transcriptional suppressor of c-myc expression and involved in control of tumorigenesis. Gastric cancer is one of the most frequent neoplasms and lethal malignancies worldwide. So far, the regulatory mechanism of its aggressiveness has not been clearly characterized. Here we studied roles of MBP-1 in gastric cancer progression. We found that cell proliferation was inhibited by MBP-1 overexpression in human stomach adenocarcinoma SC-M1 cells. Colony formation, migration, and invasion abilities of SC-M1 cells were suppressed by MBP-1 overexpression but promoted by MBP-1 knockdown. Furthermore, the xenografted tumor growth of SC-M1 cells was suppressed by MBP-1 overexpression. Metastasis in lungs of mice was inhibited by MBP-1 after tail vein injection with SC-M1 cells. MBP-1 also suppressed epithelial-mesenchymal transition in SC-M1 cells. Additionally, MBP-1 bound on cyclooxygenase 2 (COX-2) promoter and downregulated COX-2 expression. The MBP-1-suppressed tumor progression in SC-M1 cells were through inhibition of COX-2 expression. MBP-1 also exerted a suppressive effect on tumor progression of other gastric cancer cells such as AGS and NUGC-3 cells. Taken together, these results suggest that MBP-1-suppressed COX-2 expression plays an important role in the inhibition of growth and progression of gastric cancer.
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Affiliation(s)
- Kai-Wen Hsu
- Department of Anatomy and Cell Biology, National Yang-Ming University, Taipei, Taiwan
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Rocha FTR, Lourenço LG, Jucá MJ, Costa V, Leal AT. Chemoprevention by celecoxib in reflux-induced gastric adenocarcinoma in Wistar rats that underwent gastrojejunostomy. Acta Cir Bras 2010; 24:189-94. [PMID: 19504000 DOI: 10.1590/s0102-86502009000300005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Accepted: 03/18/2009] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To evaluate chemoprevention by celecoxib in cases of reflux-induced gastric adenocarcinoma, in Wistar rats that underwent gastrojejunostomy. METHODS Sixty male Wistar rats of average age three months underwent surgery and were distributed into three groups: group 1, exploratory laparotomy; group 2, gastrojejunostomy; and group 3, gastrojejunostomy and daily celecoxib administration. After 53 weeks, the animals were sacrificed. Changes in the mucosa of the gastric body of group 1 and in the gastrojejunal anastomosis of groups 2 and 3, observed in histopathological and immunohistochemical examinations, were compared. All statistical analyses were performed using Epi-Info, version 3.4.3. RESULTS Comparison between groups 2 and 3 relative to the presence of adenocarcinoma showed a statistically significant difference (p=0.0023). Analysis of the association between groups 2 and 3 relative to COX-2 expression also showed a statistically significant difference (p=0.0018). CONCLUSION Celecoxib had an inhibiting effect on gastric carcinogenesis induced by enterogastric reflux in an animal model.
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The angiotensin II type 2 receptor and the gastrointestinal tract. J Renin Angiotensin Aldosterone Syst 2009; 11:43-8. [DOI: 10.1177/1470320309347788] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The renin-angiotensin system (RAS) is well known for its vital involvement in body fluid homeostasis and circulation. However, very little research has been devoted to the impact of this regulatory system on the gastrointestinal (GI) system. This is surprising because the GI tract is fundamental for the intake and excretion of fluid and electrolytes (and nutrients), and it accommodates a large proportion of bodily haemodynamics and host defence systems. The RAS is well expressed and active in the GI tract, although the exact roles for the key mediator angiotensin II (Ang II) and its receptors in general, and the type 2 (AT 2) receptor in particular, are not completely settled. There are several reports showing Ang II regulation of intestinal fluid and electrolyte transport. For example, mucosaprotective duodenal bicarbonate-rich secretion is inhibited by Ang II via type 1 (AT1) receptor-mediated facilitation of sympathoadrenergic activity, but this secretory process can also be stimulated by Ang II via AT2 receptors. Novel data from human oesophagus and jejunum suggest that the AT1 receptor mediates muscular contractions and that the AT2 receptor regulates epithelial functions. Data are accumulating suggesting involvement of AT1 and AT2 receptors in GI inflammation and carcinogenesis. The picture of the RAS and AT 2 receptor in the GI tract is, however, far from complete. Much more basic research is needed with regard to GI pathophysiology before concluding clinical significance and potential applicability of pharmacological interferences with the RAS.
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Kuo CH, Hu HM, Tsai PY, Wu IC, Yang SF, Chang LL, Wang JY, Jan CM, Wang WM, Wu DC. Short-term Celecoxib intervention is a safe and effective chemopreventive for gastric carcinogenesis based on a Mongolian gerbil model. World J Gastroenterol 2009; 15:4907-14. [PMID: 19842220 PMCID: PMC2764967 DOI: 10.3748/wjg.15.4907] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the optimal intervention point of a selective cyclooxygenase-2 (COX-2) inhibitor, Celecoxib, for inhibiting Helicobacter pylori (H pylori)-associated gastric carcinogenesis in Mongolian gerbils (MGs).
METHODS: One hundred and twelve MGs were divided into six groups (A-F). One hundred gerbils were inoculated with H pylori (groups A-E). Twelve gerbils were inoculated with vehicle broth only (group F). After 4 wk, they were given N’-methyl-N’-nitro-N-nitroso-guanidine (MNNG) (50 μg/mL) in the drinking water for 20 wk. In groups B-E, the animals were given the stock Celecoxib (10 mg/kg per day) diet from the 21st, 31st, 21st and 41st week respectively. The periods of administering Celecoxib were 30, 20, 20, and 15 wk respectively. On the 51st week, the animals were sacrificed for histological examination. Local PCNA expression was examined by the immunohistochemistry method. The expression of COX-2 protein was assessed by Western Blot. Analysis used the χ2 test. The difference was regarded as significant when P value was less than 0.05.
RESULTS: Seventeen percent (17/100) of H pylori-infected MGs developed gastric cancer. All of these lesions were well-differentiated adenocarcinoma. The incidence rates of adenocarcinoma in groups A-F were 40%, 0%, 0%, 20%, 25%, and 0% respectively. The inflammatory scores were higher in group B than in other groups. There was no inflammatory response noted in group F. Celecoxib treatment resulted in a significant reduction in the proliferation of H pylori-infected mucosal cells (groups B, C and D) (P < 0.01).The expression of COX-2 protein was significantly attenuated in the groups which were Celecoxib-treated for more than 20 wk (groups B, C, D). The groups treated with Celecoxib had a significantly lower rate of advanced gastric cancer (34% vs 75%, P < 0.001) There were no sudden deaths in any of the groups.
CONCLUSION: Short-term treatment with Celecoxib has an anti-carcinogenic effect, and resulted in less severe inflammation and inhibited the invasive degree of gastric cancer.
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Zhu W, Wei BB, Shan X, Liu P. -765G>C and 8473T>C polymorphisms of COX-2 and cancer risk: a meta-analysis based on 33 case-control studies. Mol Biol Rep 2009; 37:277-88. [PMID: 19669667 DOI: 10.1007/s11033-009-9685-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2009] [Accepted: 07/28/2009] [Indexed: 12/13/2022]
Abstract
Cyclooxygenase-2 (COX-2) is an inducible enzyme converting arachidonic acid to prostaglandins and playing important roles in cancer etiology. The -765G>C and 8473T>C polymorphisms have been implicated in cancer risk. However, the results on the association between the two COX-2 polymorphisms and cancer risk are conflicting. To derive a more precise estimation of the association between them, we performed a meta-analysis of 8,090 cancer cases and 11,010 controls concerning -765G>C polymorphism and 14,283 cancer cases and 15,489 controls concerning 8473T>C polymorphism from 33 case-control studies. We used odds ratios (ORs) with 95% confidence intervals (CIs) to assess the strength of the association. Overall, individuals with the -765GC or GC/CC genotypes were associated with higher cancer risk than those with the -765GG genotype and in the stratified analysis this effect maintained in colorectal carcinoma or esophageal cancer of Asian descents. Overall, no significant cancer risk of 8473T>C polymorphism was found. Stratified by cancer types, the variant 8473CC was associated with a decreased risk in breast cancer, compared with the TT or TC/TT genotypes and in lung cancer subgroup after sensitive analysis, there was a decreased risk in CC versus TT, TC versus TT and the dominant models. Moreover, a decreased risk of lung cancer was observed among smokers in the dominant model. In summary, this meta-analysis suggesting that -765G>C may cause an increased risk of colorectal carcinoma and esophageal cancer in Asian descents while 8473T>C polymorphism may cause a decreased risk of breast and lung cancer.
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Affiliation(s)
- Wei Zhu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Kristinsson JO, Westerveld PV, Morsche RHMT, Roelofs HMJ, Wobbes T, Witteman BJM, Tan ACITL, Oijen MGHV, Jansen JBMJ, Peters WHM. Cyclooxygenase-2 polymorphisms and the risk of esophageal adeno- or squamous cell carcinoma. World J Gastroenterol 2009; 15:3493-7. [PMID: 19630103 PMCID: PMC2715974 DOI: 10.3748/wjg.15.3493] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine whether -1195 A→G and/or -765 G→C polymorphisms in Cyclooxygenase-2 (COX-2) may have a risk modifying effect on the development of esophageal carcinoma in a Dutch Caucasian population.
METHODS: Two study groups were recruited, 252 patients with esophageal carcinoma and 240 healthy controls, matched for race, age, gender and recruiting area. DNA was isolated from whole blood and used for genotyping. PCR products were digested with restriction enzymes and products were analyzed by agarose gel electrophoresis. Odds ratios (OR) and 95% confidence intervals (CI) were estimated.
RESULTS: The distribution of the -1195 A→G polymorphism was significantly different in esophageal cancer patients compared to controls. The -1195 GG genotype resulted in a higher risk of developing esophageal adenocarcinoma (OR = 3.85, 95% CI: 1.45-10.3) compared with the -1195 AA genotype as a reference. The -765 G→C genotype distribution was not different between the two groups. The GG/GG haplotype was present more often in esophageal adenocarcinoma patients than in controls (OR = 3.45, 95% CI: 1.24-9.58; with AG/AG as a reference). The same trends were observed in patients with squamous cell carcinomas, however, the results did not reach statistical significance.
CONCLUSION: Presence of the COX-2 -1195 GG genotype and of the GG/GG haplotype may result in a higher risk of developing esophageal carcinoma.
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Yeh TS, Wu CW, Hsu KW, Liao WJ, Yang MC, Li AFY, Wang AM, Kuo ML, Chi CW. The activated Notch1 signal pathway is associated with gastric cancer progression through cyclooxygenase-2. Cancer Res 2009; 69:5039-48. [PMID: 19491270 DOI: 10.1158/0008-5472.can-08-4021] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Gastric carcinoma is one of the most common cancers and lethal malignancies worldwide. Thus far, the regulatory mechanisms of its aggressiveness are still poorly understood. To understand the pathogenesis and to develop new therapeutic strategies, it is essential to dissect the molecular mechanisms that regulate progression of gastric cancer. Herein, we sought to address whether Notch1 signal pathway is involved in the control of progression in gastric cancer. We found that expression of Notch ligand Jagged1 was correlated with aggressiveness of human gastric cancer. Patients with Jagged1 expression in gastric cancer tissues had a poor survival rate compared with those without Jagged1 expression. The Notch1 receptor intracellular domain (N1IC), the activated form of Notch1 receptor, promoted the colony-forming ability and xenografted tumor growth of human stomach adenocarcinoma SC-M1 cells. Migration and invasion abilities of SC-M1 cells were enhanced by N1IC. Furthermore, N1IC and C promoter-binding factor 1 (CBF1) bound to cyclooxygenase-2 (COX-2) promoter and elevated COX-2 expression in SC-M1 cells through a CBF1-dependent manner. The colony-forming, migration, and invasion abilities enhanced by N1IC were suppressed in SC-M1 cells after treatment with the COX-2 inhibitor NS-398 or knockdown of COX-2. These cellular processes inhibited by Notch1 knockdown were restored by prostaglandin E(2) or exogenous COX-2. Taken together, these results suggest that activation of Notch1 signal pathway promotes progression of gastric cancer, at least in part through COX-2.
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Affiliation(s)
- Tien-Shun Yeh
- Department of Anatomy and Cell Biology, National Yang-Ming University, Taipei 112, Taiwan.
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Oba M, Miwa K, Fujimura T, Harada S, Sasaki S, Oyama K, Ohta T, Hattori T. A selective cyclooxygenase-2 inhibitor prevents inflammation-related squamous cell carcinogenesis of the forestomach via duodenogastric reflux in rats. Cancer 2009; 115:454-64. [PMID: 19110997 DOI: 10.1002/cncr.23990] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Duodenal reflux causes inflammation-related squamous cell carcinogenesis in the forestomach of rats without any carcinogens. The aim of this study was to investigate the efficacy of a selective cyclooxygenase (COX)-2 inhibitor, meloxicam, in preventing this carcinogenesis. METHODS A series of 188 rats underwent a surgical duodenogastric reflux procedure and were divided into 2 groups. One group was given commercial chow (control group), and the other was given experimental chow containing meloxicam (0.3 mg/kg body weight/day) (meloxicam group). The animals were sequentially sacrificed at Weeks 20, 30, 40, 50, and 60 after surgery. The forestomach was examined for the presence of carcinoma, the incidence of reflux-related morphological changes, COX-2 expression, and its activity. RESULTS At Week 60, squamous cell carcinoma developed in 8 of 21 animals (38%) in the control group, but none of 20 (0%) in the meloxicam group (P<.05). In addition, basal cell dysplasia developed in 19 of 21 (90%) animals in the control group, but only 4 of 20 (20%) in the meloxicam group (P<.01). COX-2 immunoreactivity was predominantly detected in macrophages in the epithelial stroma. Compared with nonsurgical rats, RNA expression of COX-2 in the epithelium was up-regulated, reaching peak at an early stage of Week 20 in both groups (P<.005). The expression of microsomal prostaglandin E synthase-1 was lower in the meloxicam group than in the control group. PGE2 production was significantly suppressed throughout the experiment in the meloxicam group compared with the control group (P<.005). CONCLUSIONS Meloxicam was effective in preventing reflux-induced squamous cell carcinogenesis via an inflamed squamous epithelium.
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Affiliation(s)
- Masaru Oba
- Gastroenterological Surgery, Department of Oncology, Division of Cancer Medicine, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
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