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Pereira VS, Alves BDCA, Waisberg J, Fonseca F, Gehrke F. Detection of COX-2 in liquid biopsy of patients with prostate cancer. J Clin Pathol 2023; 76:189-193. [PMID: 34782424 DOI: 10.1136/jclinpath-2021-207755] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/14/2021] [Indexed: 01/10/2023]
Abstract
AIMS To determine the profile of COX-2 gene expression in patients with prostate cancer attended at the ABC University Health Center outpatient clinic and correlate the results with patients' anatomopathological examinations. Prostate cancer is the sixth most common type of cancer worldwide and the second in Brazil. COX-2 expression is associated with an unfavourable prognosis. METHODS 15.0 mL of peripheral blood were collected from 24 patients and 25 healthy men. RNA extraction was performed using the QIAamp RNA Blood Mini Kit. Complementary DNA synthesis was performed using SuperScript II RNAse Reverse Transcriptase. Quantitative real-time PCR was performed with specific COX-2 oligonucleotides and the endogenous GAPDH gene. RESULTS The mean age of the patients was 69 years old. The Gleason scoring system showed 37.5% of patients with Gleason 6 (slow growth, low risk), 45.8% with Gleason 7 (intermediate risk) and 16.7% with Gleason 8 or 9 (risk of high-grade cancer). The median COX-2 expression in the study group was 0.97, while in the control group it was 0.11 (p<0.045). CONCLUSIONS Patients with prostate cancer showed higher COX-2 expression at diagnosis compared with the control group. Since COX-2 detection associated with prostate-specific antigen dosage shows promise as a biomarker for diagnosis and prognosis in patients with prostate cancer, further research is required to confirm these findings.
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Affiliation(s)
| | | | - Jaques Waisberg
- Programa de Pós-Graduação em Ciência Cirúrgica Interdisciplinar, Universidade Federal de São Paulo, UNIFESP/EPM, São Paulo, Brazil.,Cirurgia, Centro Universitário FMABC, Santo André, Brazil
| | - Fernando Fonseca
- Laboratório de Análises Clínicas, Centro Universitário FMABC, Santo André, Brazil.,Ciências Farmacêuticas, Universidade Federal de São Paulo/UNIFESP, Diadema, Brazil
| | - Flavia Gehrke
- Programa de Pós Graduação em Ciências da Saúde, Iamspe, São Paulo, Brazil .,Patologia, Centro Universitário FMABC, Santo André, Brazil
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Zhan X, Wang Y, Yang J. Janus Kinase/Signal Converters, and the Transcriptional Activator Signaling Pathway Promotes Lung Cancer Through Increasing M2 Macrophage. J BIOMATER TISS ENG 2021. [DOI: 10.1166/jbt.2021.2566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Accumulating evidence highlights the salient function of JAK/STAT signaling pathway in tumorigenesis and development. But the mechanism of JAK/STAT signaling in lung cancer remains elusive. This study assessed the impact of JAK/STAT on lung tumorigenesis and its interaction with microenvironment.
Mouse model of primary lung cancer was established and then treated with JAK/STAT inhibitor. Immunofluorescence was performed to analyze fluorescent labels. Transwell assay determined the cell migration ability, and Western blot, immunohistochemistry, and immunofluorescence to detect the expression
of JAK/STAT key proteins. Cell proliferation was measured by Kit-8 and colony formation. JAK/STAT key proteins were upregulated in lung cancer models. Inhibition of JAK/STAT led to a decrease in proliferative, migratory and invasive capability of lung cancer cells and macrophages from bone
marrow and spleen. The cell invasion ability in the bone marrow and the proliferation of macrophages in the treatment group was weakened. When co-cultured with the treated macrophages, the proliferation of LLC1 cells was inhibited. Furthermore, in vitro flow cytometry indicated that
JAK/STAT affected lung cancer progression by affecting the polarization of M1/M2 macrophages. Taken altogether, JAK/STAT signal enhances M2 macrophage expression and promotes lung cancer progression.
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Affiliation(s)
- Xinliang Zhan
- Department of Respiratory Medicine, Huangmei County People’s Hospital, Huanggang, Hubei, 435500, China
| | - Yan Wang
- Cardiothoracic Surgery, Jiang jin Central Hospital of Chongqing, Chongqing, 402260, China
| | - Jing Yang
- No. 1 Ward, Department of Respiratory and Critical Care Medicine, Huangshi Central Hospital of Edong Healthcare Group, Affiliated Hospital of Hubei Polytechnic University, Huangshi, Hubei, 435000, China
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Gurgel DC, Wong DVT, Bandeira AM, Pereira JFB, Gomes-Filho JV, Pereira AC, Barros Silva PG, Távora FRF, Pereira AF, Lima-Júnior RCP, Almeida PRC. Cytoplasmic CCR7 (CCR7c) immunoexpression is associated with local tumor recurrence in triple-negative breast cancer. Pathol Res Pract 2020; 216:153265. [PMID: 33181406 DOI: 10.1016/j.prp.2020.153265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) is a subtype of cancer, which tests negative for estrogen receptors, progesterone receptors, and lacks overexpression of the human epidermal growth factor 2 (C-erbB2, HER2/neu) gene. The expression of chemokines and their receptors, including CCR7, has been described in several types of cancer, contributing to tumor progression. AIM OF THE STUDY This study investigated the association between the membrane and cytoplasmic CCR7 expression and the prognosis of TNBC. MATERIALS AND METHODS Surgical paraffin histopathology blocks and clinico-pathological data were assessed from 133 patients. Samples were analyzed by immunohistochemistry and immunofluorescence using the Tissue Microarray technique for scoring the intensity of CCR7 expression. RESULTS TNBC patients in which the CCR7 labeling was predominantly in the cytoplasm of tumor cells presented increased local tumor recurrence (P = 0.033). Conversely, there was no statistical difference in five-year overall survival between the patients with low (77%) versus high (80%) cytoplasmic CCR7 expression (P = 0.7104). Additionally, the risk of death between these groups was 1.19 (95% CI = 0.48-2.91). CONCLUSION The cytoplasmic CCR7 expression associates with an increased incidence of tumor relapse in TNBC, not affecting patients survival. Consequently, the cell compartment in which the CCR7 localizes could serve as a prognostic marker in this cancer subtype.
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Affiliation(s)
- Daniel Cordeiro Gurgel
- Department of Pathology, Molecular Biology Laboratory, Cancer Institute of Ceará, Fortaleza, Brazil
| | - Deysi Viviana Tenazoa Wong
- Department of Pathology, Molecular Biology Laboratory, Cancer Institute of Ceará, Fortaleza, Brazil; Department of Pathology and Forensic Medicine, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Alessandro Maia Bandeira
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | | | - Jedson Vieira Gomes-Filho
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Ana Carolina Pereira
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Paulo Goberlanio Barros Silva
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Brazil
| | - Fábio Rocha Fernandes Távora
- Department of Pathology and Forensic Medicine, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - Anamaria Falcão Pereira
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
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Yin W, Zheng G, Su S, Liang Y. The Value of COX-2, NF-κB, and Blood Routine Indexes in the Prognosis of Malignant Peritoneal Mesothelioma. Oncol Res Treat 2019; 42:334-341. [PMID: 31063993 DOI: 10.1159/000499677] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 03/15/2019] [Indexed: 01/30/2023]
Abstract
BACKGROUND/AIMS To investigate differences in blood routine indexes and the expression of cyclooxygenase-2 (COX-2) and nuclear factor-kappa B (NF-κB) in malignant peritoneal mesothelioma (MPeM) and their relationship with clinical prognosis. METHODS We investigated changes in blood routine indexes between the MPeM patients and healthy subjects and detected the expression of COX-2 and NF-κB in peritoneal tissues by a streptavidin-peroxidase immunohistochemistry method. Potential prognostic factors were analyzed including age, gender, white blood cell count (WBC), absolute neutrophil count (ANC), absolute lymphocyte count (ALC), absolute platelet count (APC), absolute monocyte count (AMC), neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), monocyte-to-lymphocyte ratio (MLR), COX-2, and NF-κB. Cox regression model analysis established independent factors for the survival prognosis of the patients. RESULTS Compared with the control group, AMC, MXD%, ANC, neutrophilic granulocyte percentage (NEUT%), APC, NLR, MLR, and PLR were markedly increased (p < 0.05) in the MPeM group. The positivity rates for COX-2 and NF-κB expression were 59.4 and 44.9%, respectively. Single factor analyses indicated that PLR, NLR, MLR, COX-2, and NF-κB were factors that affected the overall survival of MPeM patients, but multivariate analyses identified MLR and COX-2 as independent prognostic factors. CONCLUSIONS High blood levels of MLR and COX-2 are adverse prognostic factors for patients with MPeM.
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Affiliation(s)
- Wenjie Yin
- Department of Gastroenterology, Cangzhou Central Hospital, Cangzhou, China
| | - Guoqi Zheng
- Department of Gastroenterology, Cangzhou Central Hospital, Cangzhou, China,
| | - Shanshan Su
- Department of Gastroenterology, Cangzhou Central Hospital, Cangzhou, China
| | - Yufei Liang
- Department of Gastroenterology, Cangzhou Central Hospital, Cangzhou, China
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Ben Ayed-Guerfali D, Charfi S, Khabir A, Sellami-Boudawara T, Gargouri A, Mokdad-Gargouri R. Clinical and prognosis relevance of COX-2 expression in Tunisian patients with primary gastric adenocarcinoma. Cancer Biomark 2017; 17:67-73. [PMID: 27314294 DOI: 10.3233/cbm-160618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Inflammation and hormonal signalling induce the cyclooxygenase-2 (COX-2) expression in various human cancers including Gastric Cancer (GC). GC remains among the human malignancies diagnosticated at advanced tumor stage and thus having a poor prognosis. COX-2 is a key protein in cancer progression which is involved in proliferation, invasion, and metastasis of tumor cells. OBJECTIVE The aim of this study was to investigate the expression of COX-2 and its association with clinico-patholocigal parameters and survival in Tunisian GC patients and to correlate COX-2 expression with others cancer-related proteins. METHODS The immunohistochemistry was used to study the expression of COX-2 on 93 patients with gastric adenocarcinoma. RESULTS Our results show that COX-2 immunostaining is negative to weak in 51.6%, moderate in 33.3%, and intense in 15.1% of tumor tissues. The expression of COX-2 associated significantly with tumor differentiation (p = 0.003), and histological type (p = 0.039). Furthermore, lack of COX-2 expression is significantly associated with 1-year (p= 0.005), 2-years (p= 0.000), and 5-years (p= 0.042) relapse free survival. In addition, Cox regression model, revealed that metastasis (p= 0.014), tumor site (p= 0.013), histotype (p = 0.02), and COX-2 expression (p = 0.003) are independent factors for prognosis. Regarding the relationship between COX-2 and cancer related proteins, we found that COX-2 expression is positively associated with APC (p = 0.006), and P53 (p = 0.026), supporting a cross link between these proteins in gastric carcinogenesis. CONCLUSION Our findings emphasize the importance of COX-2 as a potential marker of tumor progression and prognosis in GC, and that the inhibition of COX-2 activity may have a therapeutic benefit in GC.
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Affiliation(s)
- Dorra Ben Ayed-Guerfali
- Laboratory of Molecular Biotechnology of Eukaryotic, Center of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Slim Charfi
- Departement of Anatomopathology, CHU Habib Bourguiba Sfax, Sfax, Tunisia
| | - Abdelmajid Khabir
- Departement of Anatomopathology, CHU Habib Bourguiba Sfax, Sfax, Tunisia
| | | | - Ali Gargouri
- Laboratory of Molecular Biotechnology of Eukaryotic, Center of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Raja Mokdad-Gargouri
- Laboratory of Molecular Biotechnology of Eukaryotic, Center of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
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Li XY, Lu WJ. Expression of cyclooxygenase-2 and metallothionein in gastric carcinoma. Shijie Huaren Xiaohua Zazhi 2016; 24:2319-2323. [DOI: 10.11569/wcjd.v24.i15.2319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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 detect the expression of cyclooxygenase-2 (COX-2) and metallothionein (MT) in gastric carcinoma.
METHODS: Two hundred gastric cancer patients treated at our hospital from August 2012 to August 2014 were selected, and gastric cancer tissue specimens and tumor adjacent specimens were collected from these patients. Immunohistochemistry was then used to detect the expression of COX-2 and MT in the above specimens.
RESULTS: The rate of positive expression of MT was significantly higher in gastric cancer tissue specimens than in tumor adjacent specimens (92.0% vs 24.0%, P < 0.05). The rate of positive expression of COX-2 was also significantly higher in gastric cancer tissue specimens than in tumor adjacent specimens (78.0% vs 20.0%, P < 0.05).
CONCLUSION: COX-2 and MT are highly expressed in gastric cancer, which may be involved in the development of gastric cancer, and related to the metastasis and invasion of gastric cancer.
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Gu ZY, Li SY, Li J, Xiao ZW, Zhou T. Expression of MMP-14 and COX-2 in gastric cancer. Shijie Huaren Xiaohua Zazhi 2014; 22:2300-2305. [DOI: 10.11569/wcjd.v22.i16.2300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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 protein expression of MMP-14 and COX-2 in gastric cancer to further reveal the pathogenesis of gastric cancer.
METHODS: The protein expression of MMP-14 and COX-2 was examined by immunohistochemistry in human gastric cancer tissues and normal gastric tissues, and the relationship between the protein expression and clinicopathological features was analyzed. The protein expression of MMP-14 in human gastric cancer tissues at different TNM stages was also explored.
RESULTS: The expression rates of MMP-14 and COX-2 in gastric cancer tissues were significantly higher than those in normal tissues (P < 0.01). The expression of MMP-14 was significantly correlated with the degree of differentiation, lymph node metastasis, invasion depth and TNM stage of gastric cancer (P < 0.01). The expression of COX-2 was correlated with invasion depth and TNM stage of gastric cancer (P < 0.05). MMP-14 expression was positively correlated with COX-2 expression in gastric cancer tissues (P < 0.01). MMP-14 expression increased with the elevation of TNM stage and showed a tendency from the cytoplasm to cell membrane.
CONCLUSION: Stimulating overexpression and intracellular translocation of MMP-14 may be one of mechanisms for COX-2 protein to contribute to the invasion and metastasis of human gastric cancer.
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Zhang H, Sun K, Ding J, Xu H, Zhu L, Zhang K, Li X, Sun W. Harmine induces apoptosis and inhibits tumor cell proliferation, migration and invasion through down-regulation of cyclooxygenase-2 expression in gastric cancer. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2014; 21:348-355. [PMID: 24176842 DOI: 10.1016/j.phymed.2013.09.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 07/28/2013] [Accepted: 09/19/2013] [Indexed: 06/02/2023]
Abstract
Cyclooxygenase-2 (COX-2) plays an important role in the carcinogenesis and progression of gastric cancer. Harmine is reported as a promising drug candidate for cancer therapy; however, effects and action mechanism of harmine on the human gastric cancer cells remain unclear. This study evaluated the anti-tumor effects of harmine on human gastric cancer both in vitro and in vivo. The cell proliferation was determined using MTT colorimetric assay. Apoptosis was measured by DAPI staining and flow cytometry analysis. The wound healing and transwell invasion assays were performed to evaluate the effects of harmine on the migration and invasion of gastric cancer cells. The expression of COX-2, proliferating cell nuclear antigen (PCNA), Bcl-2, Bax and matrix metalloproteinase-2 (MMP-2) was detected by Western blot analysis. Our results showed that harmine significantly inhibited cellular proliferation, migration, invasion and induced apoptosis in vitro, as well as inhibited tumor growth in vivo. In addition, harmine significantly inhibited the expression of COX-2, PCNA, Bcl-2 and MMP-2 as well as increased Bax expression in gastric cancer cells. These results collectively indicate that harmine induces apoptosis and inhibits proliferation, migration and invasion of human gastric cancer cells, which may be mediated by down-regulation of COX-2 expression.
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Affiliation(s)
- Hao Zhang
- Department of Geriatric Gastroenterology, the First Affiliated Hospital to Nanjing Medical University, Nanjing 210029, PR China
| | - Kun Sun
- Department of Geriatric Gastroenterology, the First Affiliated Hospital to Nanjing Medical University, Nanjing 210029, PR China
| | - Jing Ding
- Department of Respiratory Medicine, the Affiliated Nanjing Children Hospital to Nanjing Medical University, Nanjing 210029, PR China
| | - Huae Xu
- Department of Pharmacy, the First Affiliated Hospital to Nanjing Medical University, Nanjing 210029, PR China
| | - Lingjun Zhu
- Department of Oncology, the First Affiliated Hospital to Nanjing Medical University, Nanjing 210029, PR China
| | - Kai Zhang
- Department of Geriatric Gastroenterology, the First Affiliated Hospital to Nanjing Medical University, Nanjing 210029, PR China
| | - Xiaolin Li
- Department of Geriatric Gastroenterology, the First Affiliated Hospital to Nanjing Medical University, Nanjing 210029, PR China.
| | - Weihao Sun
- Department of Geriatric Gastroenterology, the First Affiliated Hospital to Nanjing Medical University, Nanjing 210029, PR China.
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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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Knudsen CS, Williams A, Brearley MJ, Demetriou JL. COX-2 expression in canine anal sac adenocarcinomas and in non-neoplastic canine anal sacs. Vet J 2013; 197:782-7. [PMID: 23778258 DOI: 10.1016/j.tvjl.2013.05.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Revised: 03/08/2013] [Accepted: 05/06/2013] [Indexed: 01/06/2023]
Abstract
Anal sac adenocarcinoma (ASAC) is a clinically significant canine neoplasm characterized by early lymphatic invasion. Up-regulation of cyclooxygenase isoform 2 (COX-2) has been confirmed in several animal and human neoplastic tissues. The aim of the current study was primarily to evaluate COX-2 expression in canine ASAC and compare it to COX-2 expression in non-neoplastic canine anal sac tissue using immunohistochemistry with scoring for percentage positivity and intensity. Twenty-five ASAC samples and 22 normal anal sacs were available for evaluation. All canine ASAC samples and the normal anal sac tissues stained positively for COX-2. However, while normal anal sac tissue showed strong staining of the ductal epithelial cells, ASAC samples showed staining of the neoplastic glandular epithelial cells, with varying percentage positivity and intensity between ASAC samples. COX-2 immunoreactivity of ASAC samples was of low intensity in 52% and high in 12% of the cases; the remaining samples were of intermediate intensity. Seventy-six per cent of the ASAC had over 50% of the neoplastic glandular cells staining positive. These results confirm that COX-2 is expressed in the neoplastic glandular epithelial cells in canine ASAC and suggest a potential role for COX-2 inhibitors in the management of ASAC. Furthermore, the results indicate that COX-2 is expressed in ductal epithelial cells of the normal anal sac.
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Affiliation(s)
- C S Knudsen
- The Queen's Veterinary School Hospital, Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK.
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Gastrin acting on the cholecystokinin2 receptor induces cyclooxygenase-2 expression through JAK2/STAT3/PI3K/Akt pathway in human gastric cancer cells. Cancer Lett 2013; 332:11-8. [PMID: 23376640 DOI: 10.1016/j.canlet.2012.12.030] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Revised: 11/29/2012] [Accepted: 12/02/2012] [Indexed: 12/16/2022]
Abstract
Gastrin, cholecystokinin2 receptor (CCK2R), and cyclooxygenase-2 (COX-2) have been implicated in the carcinogenesis and progression of gastric cancer. Our study demonstrated that antagonist or siRNA against CCK2R blocked amidated gastrin (G17)-induced activation of STAT3 and Akt in gastric cancer cell lines. G17-increased COX-2 expression and cell proliferation were effectively blocked by CCK2R antagonist and inhibitors of JAK2 and PI3K. In addition, knockdown of STAT3 expression significantly attenuated G17-induced PI3K/Akt activation, COX-2 expression, and cell proliferation. These results suggest that CCK2R-mediated COX-2 up-regulation via JAK2/STAT3/PI3K/Akt pathway is involved in the proliferative effect of G17 on human gastric cancer cells.
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