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Bragg MA, Breaux WA, M’Koma AE. Inflammatory Bowel Disease-Associated Colorectal Cancer: Translational and Transformational Risks Posed by Exogenous Free Hemoglobin Alpha Chain, A By-Product of Extravasated Erythrocyte Macrophage Erythrophagocytosis. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1254. [PMID: 37476546 PMCID: PMC10358352 DOI: 10.3390/medicina59071254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/25/2023] [Accepted: 06/27/2023] [Indexed: 07/22/2023]
Abstract
Colonic inflammatory bowel disease (IBD) encompasses ulcerative colitis (UC) and Crohn's colitis (CC). Patients with IBD are at increased risk for colitis-associated colorectal cancer (CACRC) compared to the general population. CACRC is preceded by IBD, characterized by highly heterogenous, pharmacologically incurable, pertinacious, worsening, and immune-mediated inflammatory pathologies of the colon and rectum. The molecular and immunological basis of CACRC is highly correlated with the duration and severity of inflammation, which is influenced by the exogenous free hemoglobin alpha chain (HbαC), a byproduct of infiltrating immune cells; extravasated erythrocytes; and macrophage erythrophagocytosis. The exogenous free HbαC prompts oxygen free radical-arbitrated DNA damage (DNAD) through increased cellular reactive oxygen species (ROS), which is exacerbated by decreased tissue antioxidant defenses. Mitigation of the Fenton Reaction via pharmaceutical therapy would attenuate ROS, promote apoptosis and DNAD repair, and subsequently prevent the incidence of CACRC. Three pharmaceutical options that attenuate hemoglobin toxicity include haptoglobin, deferoxamine, and flavonoids (vitamins C/E). Haptoglobin's clearance rate from plasma is inversely correlated with its size; the smaller the size, the faster the clearance. Thus, the administration of Hp1-1 may prove to be beneficial. Further, deferoxamine's hydrophilic structure limits its ability to cross cell membranes. Finally, the effectiveness of flavonoids, natural herb antioxidants, is associated with the high reactivity of hydroxyl substituents. Multiple analyses are currently underway to assess the clinical context of CACRC and outline the molecular basis of HbαC-induced ROS pathogenesis by exposing colonocytes and/or colonoids to HbαC. The molecular immunopathogenesis pathways of CACRC herein reviewed are broadly still not well understood. Therefore, this timely review outlines the molecular and immunological basis of disease pathogenesis and pharmaceutical intervention as a protective measure for CACRC.
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Affiliation(s)
| | | | - Amosy E. M’Koma
- School of Medicine, Division of Biomedical Sciences, Meharry Medical College, Nashville, TN 37208, USA; (M.A.B.); (W.A.B.)
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Chang WCL, Ghosh J, Cooper HS, Vanderveer L, Schultz B, Zhou Y, Harvey KN, Kaunga E, Devarajan K, Li Y, Jelinek J, Fragoso MF, Sapienza C, Clapper ML. Folic Acid Supplementation Promotes Hypomethylation in Both the Inflamed Colonic Mucosa and Colitis-Associated Dysplasia. Cancers (Basel) 2023; 15:2949. [PMID: 37296911 PMCID: PMC10252136 DOI: 10.3390/cancers15112949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/22/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
PURPOSE The purpose of this study was to assess the effect of folic acid (FA) supplementation on colitis-associated colorectal cancer (CRC) using the azoxymethane/dextran sulfate sodium (AOM/DSS) model. METHODS Mice were fed a chow containing 2 mg/kg FA at baseline and randomized after the first DSS treatment to receive 0, 2, or 8 mg/kg FA chow for 16 weeks. Colon tissue was collected for histopathological evaluation, genome-wide methylation analyses (Digital Restriction Enzyme Assay of Methylation), and gene expression profiling (RNA-Seq). RESULTS A dose-dependent increase in the multiplicity of colonic dysplasias was observed, with the multiplicity of total and polypoid dysplasias higher (64% and 225%, respectively) in the 8 mg FA vs. the 0 mg FA group (p < 0.001). Polypoid dysplasias were hypomethylated, as compared to the non-neoplastic colonic mucosa (p < 0.05), irrespective of FA treatment. The colonic mucosa of the 8 mg FA group was markedly hypomethylated as compared to the 0 mg FA group. Differential methylation of genes involved in Wnt/β-catenin and MAPK signaling resulted in corresponding alterations in gene expression within the colonic mucosa. CONCLUSIONS High-dose FA created an altered epigenetic field effect within the non-neoplastic colonic mucosa. The observed decrease in site-specific DNA methylation altered oncogenic pathways and promoted colitis-associated CRC.
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Affiliation(s)
- Wen-Chi L. Chang
- Cancer Prevention and Control Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA (L.V.); (E.K.)
| | - Jayashri Ghosh
- Fels Cancer Institute for Personalized Medicine, Lewis Katz School of Medicine, Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA; (J.G.); (B.S.)
| | - Harry S. Cooper
- Cancer Prevention and Control Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA (L.V.); (E.K.)
- Department of Pathology, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA
| | - Lisa Vanderveer
- Cancer Prevention and Control Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA (L.V.); (E.K.)
| | - Bryant Schultz
- Fels Cancer Institute for Personalized Medicine, Lewis Katz School of Medicine, Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA; (J.G.); (B.S.)
| | - Yan Zhou
- Biostatistics and Bioinformatics Facility, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA
| | - Kristen N. Harvey
- Cancer Prevention and Control Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA (L.V.); (E.K.)
| | - Esther Kaunga
- Cancer Prevention and Control Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA (L.V.); (E.K.)
| | - Karthik Devarajan
- Biostatistics and Bioinformatics Facility, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA
| | - Yuesheng Li
- DNA Sequencing and Genomic Core Facility, National Heart, Lung, and Blood Institute, NIH, 10 Center Drive, Bethesda, MD 20892, USA
| | - Jaroslav Jelinek
- Fels Cancer Institute for Personalized Medicine, Lewis Katz School of Medicine, Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA; (J.G.); (B.S.)
| | - Mariana F. Fragoso
- Cancer Prevention and Control Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA (L.V.); (E.K.)
| | - Carmen Sapienza
- Fels Cancer Institute for Personalized Medicine, Lewis Katz School of Medicine, Temple University, 3500 N. Broad Street, Philadelphia, PA 19140, USA; (J.G.); (B.S.)
| | - Margie L. Clapper
- Cancer Prevention and Control Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA (L.V.); (E.K.)
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Tran CTD, Nguyen MVT, Tran MT, Tuong TTV, Tran QH, Le LC, Pham HTT, Bui NC, Vu HH, Nguyen TTC, Ta PQ, Ha HTT, Trinh DT, Bui HTM, Trinh DQ, Van Nguyen K, Le SH, Van Vu K, Van Tran T, Tran HTT, Shrubsole MJ, Ye F, Cai Q, Zheng W, Boffetta P, Shu XO, Luu HN. Findings from the first colorectal cancer screening among 103 542 individuals in Vietnam with systematic review of colorectal cancer screening programs in Asia-Pacific region. Jpn J Clin Oncol 2022; 52:707-715. [PMID: 35383373 PMCID: PMC9264238 DOI: 10.1093/jjco/hyac043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 03/17/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Colorectal cancer is a leading cancer incidence and cause of death worldwide and in Vietnam. Although screening is considered an effective measure to prevent and control colorectal cancer, there is no such effort in Vietnam. METHODS Between 01 January 2018 and 31 October 2019, a population-based colorectal cancer screening program was conducted in Hanoi, Vietnam. A health advocacy campaign and follow-up phone calls were used to enroll residents aged ≥40 years old to complete an immunochemical-fecal occult blood testing. Positive immunochemical-fecal occult blood testing was followed by a colonoscopy. We also conducted a systematic review of the colorectal cancer screening programs in the Asia-Pacific region that used similar approach by searching Ovid Medline and PubMed databases. RESULTS During study period, 103 542 individuals among 672 742 eligible residents attended the screening of whom 81.5% participants finished immunochemical-fecal occult blood testing test and the positive rate was 6.1%. The coverage rate for immunochemical-fecal occult blood testing test was 11.9%. Among 2278 individuals who underwent colonoscopy, 3.5% were histologically diagnosed with cancer, 17.8% with advanced adenomas, and 23.1% with non-advanced adenomas. Males had significantly higher detection rate of advanced adenomas, cancer or ≥ two polyps/tumor than females (P < 0.0001). The systematic review showed that in two-step modality (i.e. immunochemical-fecal occult blood testing/fecal immunochemical test and colonoscopy), the test positive was from 4.1 to 10.6%. Once colonoscopy was performed subsequently, the rate of cancer among positive participants was from 1.7 to 16.4% and that of advanced adenomas was from 7.1 to 23.1%. CONCLUSION We showed that the two-step modality is a promising strategy for colorectal cancer screening in Vietnam that might apply to similar settings with limited resources.
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Affiliation(s)
- Chi Thi-Du Tran
- Vietnam Colorectal Cancer and Polyps Research Program, Vinmec Healthcare System, Hanoi, Vietnam
- College of Health Sciences, VinUniversity (VinUni), Hanoi, Vietnam
- Center of Applied Sciences, Regenerative Medicine and Advanced Technology (CARA), Vinmec Healthcare System, Hanoi, Vietnam
| | - Mai Vu-Tuyet Nguyen
- Vietnam Colorectal Cancer and Polyps Research Program, Vinmec Healthcare System, Hanoi, Vietnam
| | - Mo Thi Tran
- Vietnam Colorectal Cancer and Polyps Research Program, Vinmec Healthcare System, Hanoi, Vietnam
| | - Thuy Thi-Van Tuong
- Vietnam Colorectal Cancer and Polyps Research Program, Vinmec Healthcare System, Hanoi, Vietnam
| | - Quang Hong Tran
- Vietnam Colorectal Cancer and Polyps Research Program, Vinmec Healthcare System, Hanoi, Vietnam
| | - Linh Cu Le
- College of Health Sciences, VinUniversity (VinUni), Hanoi, Vietnam
| | - Huong Thi-Thu Pham
- Department of Gastroenterology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
| | - Nam Chi Bui
- Department of Gastroenterology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
| | - Hien Huy Vu
- Department of Gastroenterology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
| | - Tu Thi-Cam Nguyen
- Department of Gastroenterology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
| | - Phuong Que Ta
- Department of Gastroenterology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
| | - Hien Thi-Thu Ha
- Department of Histopathology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
| | - Dung Tuan Trinh
- Department of Histopathology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
- Department of Histopathology, Tam Anh General Hospital, Hanoi, Vietnam
| | - Hanh Thi-My Bui
- Department of Histopathology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
| | - Dien Quang Trinh
- Department of Histopathology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
| | - Khanh Van Nguyen
- Department of Histopathology, Vinmec International Hospital at Times City, Vinmec Healthcare System, Hanoi, Vietnam
| | - Song Huu Le
- Center of Molecular and Genetic Research, 108 Hospital, Hanoi, Vietnam
| | - Khien Van Vu
- Department of Gastroenterology, 108 Hospital, Hanoi, Vietnam
| | - Thuan Van Tran
- Vietnam Ministry of Health, Hanoi, Vietnam
- Vietnam National Cancer Institute, Vietnam National Cancer Hospital, Hanoi, Vietnam
| | - Huong Thi-Thanh Tran
- Vietnam National Cancer Institute, Vietnam National Cancer Hospital, Hanoi, Vietnam
| | - Martha J Shrubsole
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Fei Ye
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Qiuyin Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Paolo Boffetta
- Stony Brook Cancer Center, Stony Brooke University, Stony Brook, NY, USA
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Xiao-Ou Shu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Hung N Luu
- UPMC Hillman Cancer Center, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
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Han Y, Itenberg SA, Wu X, Xiao H. Guidelines for inflammation models in mice for food components. EFOOD 2022. [DOI: 10.1002/efd2.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yanhui Han
- Department of Food Science University of Massachusetts Amherst Amherst Massachusetts USA
| | - Sasha A. Itenberg
- Department of Kinesiology, Nutrition, and Health Miami University Oxford Ohio USA
| | - Xian Wu
- Department of Kinesiology, Nutrition, and Health Miami University Oxford Ohio USA
| | - Hang Xiao
- Department of Food Science University of Massachusetts Amherst Amherst Massachusetts USA
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Colorectal Cancer and Bone Tissue: Fantastic Relations and Where to Find Them. Cancers (Basel) 2020; 12:cancers12082029. [PMID: 32722068 PMCID: PMC7464482 DOI: 10.3390/cancers12082029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/11/2020] [Accepted: 07/23/2020] [Indexed: 12/13/2022] Open
Abstract
Colorectal cancer (CRC) is the third most common cancer worldwide. There is a need for the early diagnosis of CRC for a better prognostic outcome. It is, therefore, crucial to understand the CRC pathogenesis in all its aspects. In many cases, one of the main causes of cancer-related deaths is the presence of metastases. In this context, an often overlooked aspect is the metastatic tropism, since CRC, like other cancers, is more prone to metastasize some organs rather than others. Beyond the liver and lung, and differently from other types of cancers, a not usual site of CRC metastases is the bone. However, it may assume a crucial role in the development and the outcome of the disease. Therefore, this review aims to discuss the complex relations between bone markers and CRC pathogenesis, suggesting the use of these molecules as potential targets for therapeutic purposes. Different osteogenic molecules, some of whom are growth factors and are implicated in the different osteogenic pathways, have been proved to also be involved in CRC progression. Some of them are oncogenes, while others oncosuppressors, and in a future perspective, some of them may represent new potential CRC biomarkers.
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Cheng XS, Huo YN, Fan YY, Xiao CX, Ouyang XM, Liang LY, Lin Y, Wu JF, Ren JL, Guleng B. Mindin serves as a tumour suppressor gene during colon cancer progression through MAPK/ERK signalling pathway in mice. J Cell Mol Med 2020; 24:8391-8404. [PMID: 32614521 PMCID: PMC7412704 DOI: 10.1111/jcmm.15332] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 01/14/2020] [Accepted: 02/06/2020] [Indexed: 12/13/2022] Open
Abstract
Mindin is important in broad spectrum of immune responses. On the other hand, we previously reported that mindin attenuated human colon cancer development by blocking angiogenesis through Egr-1-mediated regulation. However, the mice original mindin directly suppressed the syngenic colorectal cancer (CRC) growth in our recent study and we aimed to further define the role of mindin during CRC development in mice. We established the mouse syngeneic CRC CMT93 and CT26 WT cell lines with stable mindin knock-down or overexpression. These cells were also subcutaneously injected into C57BL/6 and BALB/c mice as well as established a colitis-associated colorectal cancer (CAC) mouse model treated with lentiviral-based overexpression and knocked-down of mindin. Furthermore, we generated mindin knockout mice using a CRISPR-Cas9 system with CAC model. Our data showed that overexpression of mindin suppressed cell proliferation in both of CMT93 and CT26 WT colon cancer cell lines, while the silencing of mindin promoted in vitro cell proliferation via the ERK and c-Fos pathways and cell cycle control. Moreover, the overexpression of mindin significantly suppressed in vivo tumour growth in both the subcutaneous transplantation and the AOM/DSS-induced CAC models. Consistently, the silencing of mindin reversed these in vivo observations. Expectedly, the tumour growth was promoted in the CAC model on mindin-deficient mice. Thus, mindin plays a direct tumour suppressive function during colon cancer progression and suggesting that mindin might be exploited as a therapeutic target for CRC.
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Affiliation(s)
- Xiao-Shen Cheng
- Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Ya-Ni Huo
- Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Yan-Yun Fan
- Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Chuan-Xing Xiao
- Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Xiao-Mei Ouyang
- Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Lai-Ying Liang
- Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Ying Lin
- Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Jian-Feng Wu
- School of Life Sciences, Xiamen University, Xiamen, China
| | - Jian-Lin Ren
- Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Bayasi Guleng
- Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China.,School of Medicine, Cancer Research Center & Institute of Microbial Ecology, Xiamen University, Xiamen, China.,State Key Laboratory of Cellular Stress Biology, Xiamen University, Xiamen, China
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The impact of APC polymorphisms on the transition from polyps to colorectal cancer (CRC). Gene 2020; 740:144486. [PMID: 32087273 DOI: 10.1016/j.gene.2020.144486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 11/24/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate the function of APC polymorphisms (D1822V and E1317Q) on the transition from polyps to colorectal cancer (CRC). METHODS 259 patients with polyps were included in the study. APC polymorphisms were genotyped via polymerase chain reaction (PCR) and subsequent sequencing. χ2 test was performed to analyze the relationship of APC polymorphisms or CRC occurrence with clinical features. COX regression was used to find out risk factors for CRC. Hazard ratio (HR) and 95% confidence interval (CI) represented the risk of CRC. RESULTS Clinical information on sex, regular physical activity, smoking history, alcohol use and polyps types was recorded. Neither D1822V nor E1317Q polymorphism was associated with these factors. In following analysis, we found significant difference in the frequency of males between CRC and non-CRC patients (87.4% vs. 58.7%, P < 0.001). Distinct difference in the distribution of D1822V polymorphism was also observed between CRC and non-CRC patients (P = 0.001). In COX analysis, sex was identified as a risk factor for transition from polyps to CRC (HR = 2.442, 95%CI = 1.281-4.654). D1822V polymorphism tended to inhibit the transition process (HR = 0.286, 95%CI = 0.170-0.480). However, E1317Q seemed to have no significant effect on this process (HR = 1.042, 95%CI = 0.676-1.606). CONCLUSION In a word, APC D1822V polymorphism has strong effect on the transition from polyps to CRC.
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Wang L, Yin G, Guo Y, Zhao Y, Zhao M, Lai Y, Sui P, Shi T, Guo W, Huang Z. Variations in Oral Microbiota Composition Are Associated With a Risk of Throat Cancer. Front Cell Infect Microbiol 2019; 9:205. [PMID: 31334130 PMCID: PMC6618584 DOI: 10.3389/fcimb.2019.00205] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 05/27/2019] [Indexed: 12/23/2022] Open
Abstract
In this study, a next-generation sequencing strategy on 16S ribosomal RNA (16S rRNA) gene was employed to analyze 70 oral samples from 32 patients with throat cancer, nine patients with vocal cord polyp, and 29 healthy individuals (normal controls). Using this strategy, we demonstrated, for the first time, that the salivary microbiota of cancer patients were significantly different from those of patients with a polyp and healthy individuals. We observed that the beta diversity of the cancer group was divergent from both the normal and polyp groups, while alpha-diversity indices such as the Chao1 estimator (P = 8.1e-05), Simpson (P = 0.0045), and Shannon (P = 0.0071) were significantly reduced in cancer patients compared with patients containing a polyp and normal healthy individuals. Linear discriminant analysis (LDA) and Kruskal–Wallis test analyses and real-time quantitative polymerase chain reaction (qPCR) verification test revealed that the genera Aggregatibacter, Pseudomonas, Bacteroides, and Ruminiclostridium were significantly enriched in the throat cancer group compared with the vocal cord polyp and normal control groups (score value >2). Finally, diagnostic models based on putatively important constituent bacteria were constructed with 87.5% accuracy [area under the curve (AUC) = 0.875, 95% confidence interval (CI): 0.695–1]. In summary, in this study we characterized, for the first time, the oral microbiota of throat cancer patients without smoking history. We speculate that these results will help in the pathogenic mechanism and early diagnosis of throat cancer.
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Affiliation(s)
- Lili Wang
- Beijing Cheer Land Biotechnology Co., Ltd., CL Investment Group, Beijing, China
| | - Gaofei Yin
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Ying Guo
- Beijing Cheer Land Biotechnology Co., Ltd., CL Investment Group, Beijing, China
| | - Yaqi Zhao
- Beijing Cheer Land Biotechnology Co., Ltd., CL Investment Group, Beijing, China
| | - Meng Zhao
- Beijing Cheer Land Biotechnology Co., Ltd., CL Investment Group, Beijing, China
| | - Yunyun Lai
- Beijing Cheer Land Biotechnology Co., Ltd., CL Investment Group, Beijing, China
| | - Pengcheng Sui
- Beijing Cheer Land Biotechnology Co., Ltd., CL Investment Group, Beijing, China
| | - Taiping Shi
- Beijing Cheer Land Biotechnology Co., Ltd., CL Investment Group, Beijing, China
| | - Wei Guo
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zhigang Huang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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Segal JP, Kanagasundaram C, Mills P, Bassett P, Greenfield SM. Polyp detection rate: does length matter? Frontline Gastroenterol 2019; 10:107-112. [PMID: 31205648 PMCID: PMC6540303 DOI: 10.1136/flgastro-2017-100945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 06/20/2018] [Accepted: 07/09/2018] [Indexed: 02/04/2023] Open
Abstract
INTRODUCTION Polyp detection rate is a surrogate marker for adenoma detection rate and therefore a surrogate marker of quality colonoscopy. To our knowledge, this is the first study that compares distance from the monitor to the endoscopist on polyp detection rate. METHODS This was a retrospective study comparing polyp detection rate across two different endoscopy room set-ups. All colonoscopies performed between December 2013 and November 2014 were retrieved. The difference in the room set-up was the distance from the endoscopist to the endoscopy monitor. Room A had a distance of 219 cm and Room B had 147 cm. We used two identical rooms, C and D, as a control arm with a distance of 190 cm between the endoscopist and the monitor. RESULTS There were significant differences in polyp detection rates between Room A and Room B in the bowel cancer screening lists. For these lists, the room with the closest distance from the endoscopist to the monitor (147 cm) had a statistically significant higher polyp detection rate than the room that had a further monitor to endoscopist distance of 219 cm (p<0.0006) and a trend towards a higher polyp detection rate compared with the room where the distance between the monitor and the endoscopist was 190 cm (p=0.08). This effect was not noticed across the service lists. CONCLUSIONS This study has suggested that the distance from the endoscopist to the monitor can affect polyp detection rate. It appears that for bowel cancer screening lists, the further the endoscopist from the monitor the lower their polyp detection rate.
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Affiliation(s)
- Jonathan P Segal
- Department of Gastroenterology, St Mark’s Hospital, Harrow, UK,Department of Surgery and Cancer, Imperial College, London, UK
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Clinically Relevant Anti-Inflammatory Agents for Chemoprevention of Colorectal Cancer: New Perspectives. Int J Mol Sci 2018; 19:ijms19082332. [PMID: 30096840 PMCID: PMC6121559 DOI: 10.3390/ijms19082332] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 07/31/2018] [Accepted: 08/03/2018] [Indexed: 12/12/2022] Open
Abstract
Substantial efforts are underway for prevention of early stages or recurrence of colorectal cancers (CRC) or new polyp formation by chemoprevention strategies. Several epidemiological, clinical and preclinical studies to date have supported the chemopreventive potentials of several targeted drug classes including non-steroidal anti-inflammatory drugs (NSAIDs) (aspirin, naproxen, sulindac, celecoxib, and licofelone), statins and other natural agents—both individually, and in combinations. Most preclinical trials although were efficacious, only few agents entered clinical trials and have been proven to be potential chemopreventive agents for colon cancer. However, there are limitations for these agents that hinder their approval by the food and drug administration for chemoprevention use in high-risk individuals and in patients with early stages of CRC. In this review, we update the recent advancement in pre-clinical and clinical development of selected anti-inflammatory agents (aspirin, naproxen, sulindac, celecoxib, and licofelone) and their combinations for further development as novel colon cancer chemopreventive drugs. We provide further new perspectives from this old research, and insights into precision medicine strategies to overcome unwanted side-effects and overcoming strategies for colon cancer chemoprevention.
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Shi Y, Huang XX, Chen GB, Wang Y, Zhi Q, Liu YS, Wu XL, Wang LF, Yang B, Xiao CX, Xing HQ, Ren JL, Xia Y, Guleng B. Dragon (RGMb) induces oxaliplatin resistance in colon cancer cells. Oncotarget 2018; 7:48027-48037. [PMID: 27384995 PMCID: PMC5216997 DOI: 10.18632/oncotarget.10338] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 06/12/2016] [Indexed: 02/01/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most commonly diagnosed cancers and a major cause of cancer mortality. Chemotherapy resistance remains a major challenge for treating advanced CRC. Therefore, the identification of targets that induce drug resistance is a priority for the development of novel agents to overcome resistance. Dragon (also known as RGMb) is a member of the repulsive guidance molecule (RGM) family. We previously showed that Dragon expression increases with CRC progression in human patients. In the present study, we found that Dragon inhibited apoptosis and increased viability of CMT93 and HCT116 cells in the presence of oxaliplatin. Dragon induced resistance of xenograft tumor to oxaliplatinin treatment in mice. Mechanistically, Dragon inhibited oxaliplatin-induced JNK and p38 MAPK activation, and caspase-3 and PARP cleavages. Our results indicate that Dragon may be a novel target that induces drug resistance in CRC.
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Affiliation(s)
- Ying Shi
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Xiao-Xiao Huang
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Guo-Bin Chen
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China.,Xiamen Branch, Zhongshan Hospital, Fudan University, Xiamen, China
| | - Ying Wang
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Qiang Zhi
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Yuan-Sheng Liu
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Xiao-Ling Wu
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Li-Fen Wang
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Bing Yang
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Chuan-Xing Xiao
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Hui-Qin Xing
- Department of Basic Medical Sciences, Institute of Neuroscience, Medical College of Xiamen University, Xiamen, China
| | - Jian-Lin Ren
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China
| | - Yin Xia
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.,School of Biomedical Sciences Core Laboratory, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Bayasi Guleng
- Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, China.,State Key Laboratory of Cellular Stress Biology, Xiamen University, Xiamen, China
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12
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Altobelli E, Latella G, Morroni M, Licini C, Tossetta G, Mazzucchelli R, Profeta VF, Coletti G, Leocata P, Castellucci M, Guerrieri M, Petrocelli R, De Berardis B, De Padova M, Di Leonardo G, Paladini A, Mignosi F, Quaglione G, Fagnano R, Marzioni D. Low HtrA1 expression in patients with long‑standing ulcerative colitis and colorectal cancer. Oncol Rep 2017; 38:418-426. [PMID: 28586045 DOI: 10.3892/or.2017.5700] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/31/2017] [Indexed: 11/05/2022] Open
Abstract
The association between inflammatory bowel disease (IBD) and colorectal cancer (CRC) is being increasingly investigated. HtrA1 overexpression inhibits cell growth and proliferation by influencing apoptosis, invasiveness and migration of tumour cells. In the present study, HtrA1 expression was analysed in 228 colon tissue samples from patients with CRC, adenoma with high-grade dysplasia (AHD), adenoma with low-grade dysplasia (ALD), ulcerative colitis of >10 year duration (UCL), ulcerative colitis of <5 year duration (UCS) and colonic diverticulitis (D), and was compared with its expression in normal colon tissues (NCTs) collected 5 cm from the CRC lesion and in healthy colon mucosa (HC), to establish whether HtrA1 can serve as a biomarker for these conditions. All tissue specimens came from Italian Caucasian subjects. The main finding of the present study was that HtrA1 expression was significantly reduced in CRC and UCL tissues compared with that observed in both NCT and HC samples and with tissues from the other patients. In particular, a similar HtrA1 expression was detected in the stromal compartment of UCL and CRC samples. In contrast, the HtrA1 level was significantly lower (p=0.0008) in UCL compared with UCS tissues, suggesting an inverse relationship between HtrA1 expression and ulcerative colitis duration. HtrA1 immunostaining in the stromal compartment of AHD and ALD tissues showed no differences compared with the HC tissues. No data are available on the immunohistochemical localization of HtrA1 in CRC or IBD. The present findings suggest that HtrA1 could serve as a marker to identify UCL patients at high risk of developing CRC.
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Affiliation(s)
- Emma Altobelli
- Epidemiology and Biostatistics Unit, Teramo, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Giovanni Latella
- Gastroenterology Unit, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Manrico Morroni
- Department of Experimental and Clinical Medicine, Università Politecnica Delle Marche, Ancona, Italy
| | - Caterina Licini
- Department of Experimental and Clinical Medicine, Università Politecnica Delle Marche, Ancona, Italy
| | - Giovanni Tossetta
- Department of Experimental and Clinical Medicine, Università Politecnica Delle Marche, Ancona, Italy
| | - Roberta Mazzucchelli
- Pathological Anatomy, Department of Medical Sciences and Public Health, Università Politecnica Delle Marche, United Hospitals, Ancona, Italy
| | | | - Gino Coletti
- Pathology Unit, San Salvatore Hospital, L'Aquila, Italy
| | - Pietro Leocata
- Pathology Unit, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Mario Castellucci
- Department of Experimental and Clinical Medicine, Università Politecnica Delle Marche, Ancona, Italy
| | - Mario Guerrieri
- Unit of Surgery, Università Politecnica delle Marche, Ospedali Riuniti, Ancona, Italy
| | | | | | - Marina De Padova
- Pathology Unit, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Gabriella Di Leonardo
- Epidemiology and Biostatistics Unit, Teramo, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Antonella Paladini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Filippo Mignosi
- Department of Information Engineering, Computer Science and Mathematics, University of L'Aquila, L'Aquila, Italy
| | | | | | - Daniela Marzioni
- Department of Experimental and Clinical Medicine, Università Politecnica Delle Marche, Ancona, Italy
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13
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Farabegoli F, Scarpa E, Frati A, Serafini G, Papi A, Spisni E, Antonini E, Benedetti S, Ninfali P. Betalains increase vitexin-2-O-xyloside cytotoxicity in CaCo-2 cancer cells. Food Chem 2017; 218:356-364. [DOI: 10.1016/j.foodchem.2016.09.112] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 03/16/2016] [Accepted: 09/16/2016] [Indexed: 01/30/2023]
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14
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Chang WCL, Masih S, Thadi A, Patwa V, Joshi A, Cooper HS, Palejwala VA, Clapper ML, Shailubhai K. Plecanatide-mediated activation of guanylate cyclase-C suppresses inflammation-induced colorectal carcinogenesis in Apc +/Min-FCCC mice. World J Gastrointest Pharmacol Ther 2017; 8:47-59. [PMID: 28217374 PMCID: PMC5292606 DOI: 10.4292/wjgpt.v8.i1.47] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/30/2016] [Accepted: 10/27/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the effect of orally administered plecanatide on colorectal dysplasia in Apc+/Min-FCCC mice with dextran sodium sulfate (DSS)-induced inflammation.
METHODS Inflammation driven colorectal carcinogenesis was induced in Apc+/Min-FCCC mice by administering DSS in their drinking water. Mice were fed a diet supplemented with plecanatide (0-20 ppm) and its effect on the multiplicity of histopathologically confirmed polypoid, flat and indeterminate dysplasia was evaluated. Plecanatide-mediated activation of guanylate cyclase-C (GC-C) signaling was assessed in colon tissues by measuring cyclic guanosine monophosphate (cGMP) by ELISA, protein kinase G-II and vasodilator stimulated phosphoprotein by immunoblotting. Ki-67, c-myc and cyclin D1 were used as markers of proliferation. Cellular levels and localization of β-catenin in colon tissues were assessed by immunoblotting and immunohistochemistry, respectively. Uroguanylin (UG) and GC-C transcript levels were measured by quantitative reverse transcription polymerase chain reaction (RT-PCR). A mouse cytokine array panel was used to detect cytokines in the supernatant of colon explant cultures.
RESULTS Oral treatment of Apc+/MinFCCC mice with plecanatide produced a statistically significant reduction in the formation of inflammation-driven polypoid, flat and indeterminate dysplasias. This anti-carcinogenic activity of plecanatide was accompanied by activation of cGMP/GC-C signaling mediated inhibition of Wnt/β-catenin signaling and reduced proliferation. Plecanatide also decreased secretion of pro-inflammatory cytokines (IL-6, IL1 TNF), chemokines (MIP-1, IP-10) and growth factors (GCSF and GMCSF) from colon explants derived from mice with acute DSS-induced inflammation. The effect of plecanatide-mediated inhibition of inflammation/dysplasia on endogenous expression of UG and GC-C transcripts was measured in intestinal tissues. Although GC-C expression was not altered appreciably, a statistically significant increase in the level of UG transcripts was detected in the proximal small intestine and colon, potentially due to a reduction in intestinal inflammation and/or neoplasia. Taken together, these results suggest that reductions in endogenous UG, accompanied by dysregulation in GC-C signaling, may be an early event in inflammation-promoted colorectal neoplasia; an event that can potentially be ameliorated by prophylactic intervention with plecanatide.
CONCLUSION This study provides the first evidence that orally administered plecanatide reduces the multiplicity of inflammation-driven colonic dysplasia in mice, demonstrating the utility for developing GC-C agonists as chemopreventive agents.
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Viikilä P, Kivelä AJ, Mustonen H, Koskensalo S, Waheed A, Sly WS, Pastorek J, Pastorekova S, Parkkila S, Haglund C. Carbonic anhydrase enzymes II, VII, IX and XII in colorectal carcinomas. World J Gastroenterol 2016; 22:8168-8177. [PMID: 27688658 PMCID: PMC5037085 DOI: 10.3748/wjg.v22.i36.8168] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/09/2016] [Accepted: 07/21/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate expression of four alpha-carbonic anhydrases (CAs) in colorectal carcinomas (CRC) and compare the results with patients’ survival.
METHODS Colorectal carcinoma samples from 539 CRC patients and control tissues were arranged as tissue microarrays and analyzed with antibodies against CA II, CA VII, CA IX, and CA XII. Intensity and extent of staining were both scored from 0 to 3 in each sample. These enzyme expression levels were then correlated to patients’ survival and clinicopathological parameters, which were tumor differentiation grade and stage, site of tumor, patients’ age, and gender. Kaplan-Meier analysis and Cox regression hazard ratio model were used to analyze survival data.
RESULTS CA II and CA XII staining intensities correlated with patients’ survival in that higher expression indicated poorer prognosis. In Cox regression analysis one unit increase in the CA II intensity increased the hazard ratio to 1.19 fold (CI: 1.04-1.37, P = 0.009). A significant correlation was also found when comparing CA XII staining intensity with survival of CRC patients (HR = 1.18, 95%CI: 1.01-1.38, P = 0.036). The extent of CA XII immunostaining did not correlate to the patients’ survival (P = 0.242, Kaplan-Meier analysis). A significant interaction between age group and extent of the CA II staining was found. Increased extent of CA II had a significant hazard ratio among patients 65 years and older (1.42, 95%CI: 1.16-1.73, P = 0.0006). No correlations were found between CA VII (intensity P = 0.566, extent P = 0.495, Kaplan-Meier analysis), or CA IX (intensity P = 0.879, extent P = 0.315, Kaplan-Meier analysis) immunostaining results and survival, or the other parameters.
CONCLUSION The present findings indicate that CA II and CA XII could be useful in predicting survival in CRC.
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16
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Large bowel cancer in the setting of inflammatory bowel disease. Eur Surg 2016. [DOI: 10.1007/s10353-016-0434-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Vargas DA, Sun M, Sadykov K, Kukuruzinska MA, Zaman MH. The Integrated Role of Wnt/β-Catenin, N-Glycosylation, and E-Cadherin-Mediated Adhesion in Network Dynamics. PLoS Comput Biol 2016; 12:e1005007. [PMID: 27427963 PMCID: PMC4948889 DOI: 10.1371/journal.pcbi.1005007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 05/30/2016] [Indexed: 11/24/2022] Open
Abstract
The cellular network composed of the evolutionarily conserved metabolic pathways of protein N-glycosylation, Wnt/β-catenin signaling pathway, and E-cadherin-mediated cell-cell adhesion plays pivotal roles in determining the balance between cell proliferation and intercellular adhesion during development and in maintaining homeostasis in differentiated tissues. These pathways share a highly conserved regulatory molecule, β-catenin, which functions as both a structural component of E-cadherin junctions and as a co-transcriptional activator of the Wnt/β-catenin signaling pathway, whose target is the N-glycosylation-regulating gene, DPAGT1. Whereas these pathways have been studied independently, little is known about the dynamics of their interaction. Here we present the first numerical model of this network in MDCK cells. Since the network comprises a large number of molecules with varying cell context and time-dependent levels of expression, it can give rise to a wide range of plausible cellular states that are difficult to track. Using known kinetic parameters for individual reactions in the component pathways, we have developed a theoretical framework and gained new insights into cellular regulation of the network. Specifically, we developed a mathematical model to quantify the fold-change in concentration of any molecule included in the mathematical representation of the network in response to a simulated activation of the Wnt/ β-catenin pathway with Wnt3a under different conditions. We quantified the importance of protein N-glycosylation and synthesis of the DPAGT1 encoded enzyme, GPT, in determining the abundance of cytoplasmic β-catenin. We confirmed the role of axin in β-catenin degradation. Finally, our data suggest that cell-cell adhesion is insensitive to E-cadherin recycling in the cell. We validate the model by inhibiting β-catenin-mediated activation of DPAGT1 expression and predicting changes in cytoplasmic β-catenin concentration and stability of E-cadherin junctions in response to DPAGT1 inhibition. We show the impact of pathway dysregulation through measurements of cell migration in scratch-wound assays. Collectively, our results highlight the importance of numerical analyses of cellular networks dynamics to gain insights into physiological processes and potential design of therapeutic strategies to prevent epithelial cell invasion in cancer.
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Affiliation(s)
- Diego A Vargas
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Meng Sun
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
| | - Khikmet Sadykov
- Department of Molecular and Cell Biology, Boston University School of Dental Medicine, Boston, Massachusetts, United States of America
| | - Maria A Kukuruzinska
- Department of Molecular and Cell Biology, Boston University School of Dental Medicine, Boston, Massachusetts, United States of America
| | - Muhammad H Zaman
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, United States of America
- Howard Hughes Medical Institute, Boston University, Boston, Massachusetts, United States of America
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18
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Abstract
Growth hormone (GH) excess in acromegaly is associated with increased precancerous colon polyps and soft tissue adenomas, whereas short-stature humans harboring an inactivating GH receptor mutation do not develop cancer. We show that locally expressed colon GH is abundant in conditions predisposing to colon cancer and in colon adenocarcinoma-associated stromal fibroblasts. Administration of a GH receptor (GHR) blocker in acromegaly patients induced colon p53 and adenomatous polyposis coli (APC), reversing progrowth GH signals. p53 was also induced in skin fibroblasts derived from short-statured humans with mutant GHR. GH-deficient prophet of pituitary-specific positive transcription factor 1 (Prop1)(-/-) mice exhibited induced colon p53 levels, and cross-breeding them with Apc(min+/-) mice that normally develop intestinal and colon tumors resulted in GH-deficient double mutants with markedly decreased tumor number and size. We also demonstrate that GH suppresses p53 and reduces apoptosis in human colon cell lines as well as in induced human pluripotent stem cell-derived intestinal organoids, and confirm in vivo that GH suppresses colon mucosal p53/p21. GH excess leads to decreased colon cell phosphatase and tensin homolog deleted on chromosome 10 (PTEN), increased cell survival with down-regulated APC, nuclear β-catenin accumulation, and increased epithelial-mesenchymal transition factors and colon cell motility. We propose that GH is a molecular component of the "field change" milieu permissive for neoplastic colon growth.
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19
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Principi M, Scavo MP, Piscitelli D, Villanacci V, Lovero R, Losurdo G, Girardi B, Ierardi E, Di Leo A. The sharp decline of beta estrogen receptors expression in long-lasting ulcerative-associated carcinoma. Scand J Gastroenterol 2015; 50:1002-10. [PMID: 25862314 DOI: 10.3109/00365521.2014.978817] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Colorectal carcinoma is an important cause of death in inflammatory bowel diseases, thus requiring surveillance for dysplasia in long-standing ulcerative colitis (UC). Females show a lower incidence probably related to hormonal factors; therefore, a role of estrogen receptors (ERs) has been supposed in carcinoma-associated colitis (CAC) development. Our aim was to identify ER beta/alpha expression in long-lasting pancolitis through each grade of dysplasia to carcinoma and, furthermore, to investigate the simultaneous epithelial apoptosis/proliferation. MATERIALS AND METHODS Forty-eight patients affected by long-lasting pancolitis were retrospectively investigated. Samples were divided into four groups: UC, low-grade dysplasia/high-grade dysplasia (UC-HGD), and CAC. Normal colon samples were used as controls. ER-beta, ER-alpha, Ki-67, and TUNEL expression (labeling/H index) were evaluated by immunohistochemistry. RESULTS ER-beta expression revealed an impressive reduction in CAC (10.4 ± 5.1; p < 0.001) compared to controls and UC (34.3 ± 3.1 and 26.8 ± 7.8, respectively), meanwhile ER-beta level in LGD (29.4 ± 3.7) was comparable to UC. As far ER-beta/ER-alpha mean value ratio revealed a progressive reduction. Ki67 demonstrated a progressive significant increase from UC until CAC (37.9 ± 6.4 < 45.7 ± 6.2 < 60.6 ± 5.2 < 71.1 ± 5.1; p < 0.001). Apoptotic index (TUNEL) revealed a strong fall in UC-HGD and CAC. CONCLUSIONS ER-beta fall could be considered as a biomarker of UC-dysplasia progression. It occurs in HGD and overt neoplasia, while in LGD shows a normal expression. At the moment, we are unable to use this tool in the clinical practice to predict tumor progression, but it would be appropriate to encourage ER expression investigations in large samples for the interesting perspectives of application.
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Affiliation(s)
- Mariabeatrice Principi
- Department of Emergency and Organ Transplantation, Gastroenterology Section, University of Bari , Bari , Italy
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20
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Dolatkhah R, Somi MH, Bonyadi MJ, Asvadi Kermani I, Farassati F, Dastgiri S. Colorectal cancer in iran: molecular epidemiology and screening strategies. J Cancer Epidemiol 2015; 2015:643020. [PMID: 25685149 PMCID: PMC4312646 DOI: 10.1155/2015/643020] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 12/05/2014] [Accepted: 12/15/2014] [Indexed: 12/22/2022] Open
Abstract
Purpose. The increasing incidence of colorectal cancer (CRC) in the past three decades in Iran has made it a major public health burden. This study aimed to report its epidemiologic features, molecular genetic aspects, survival, heredity, and screening pattern in Iran. Methods. A comprehensive literature review was conducted to identify the relevant published articles. We used medical subject headings, including colorectal cancer, molecular genetics, KRAS and BRAF mutations, screening, survival, epidemiologic study, and Iran. Results. Age standardized incidence rate of Iranian CRCs was 11.6 and 10.5 for men and women, respectively. Overall five-year survival rate was 41%, and the proportion of CRC among the younger age group was higher than that of western countries. Depending on ethnicity, geographical region, dietary, and genetic predisposition, mutation genes were considerably diverse and distinct among CRCs across Iran. The high occurrence of CRC in records of relatives of CRC patients showed that family history of CRC was more common among young CRCs. Conclusion. Appropriate screening strategies for CRC which is amenable to early detection through screening, especially in relatives of CRCs, should be considered as the first step in CRC screening programs.
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Affiliation(s)
- Roya Dolatkhah
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hossein Somi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Iraj Asvadi Kermani
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Faris Farassati
- Department of Medicine, The University of Kansas Medical School, Molecular Medicine Laboratory, KUMC, Kansas City, KS, USA
| | - Saeed Dastgiri
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Principi M, Barone M, Pricci M, De Tullio N, Losurdo G, Ierardi E, Di Leo A. Ulcerative colitis: From inflammation to cancer. Do estrogen receptors have a role? World J Gastroenterol 2014; 20:11496-11504. [PMID: 25206257 PMCID: PMC4155343 DOI: 10.3748/wjg.v20.i33.11496] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 03/29/2014] [Accepted: 05/26/2014] [Indexed: 02/06/2023] Open
Abstract
Ulcerative colitis (UC) is a condition at increased risk for colorectal carcinoma (CRC) development. Nowadays, screening and follow-up programs are routinely performed worldwide to promote the early detection of CRCs in subjects with well known risk factors (extent, duration and severity of the disorder). The diffusion of these procedures is presumably the main reason for the marked reduction of cancer incidence and mortality in the course of UC. In addition, chemoprevention has been widely investigated and developed in many medical fields, and aspirin has shown a preventive effect against CRC, while mesalazine has been strongly invoked as a potential chemopreventive agent in UC. However, available studies show some limitations due to the obvious ethical implications of drug withdrawal in UC in order to design a control group. The estrogen receptors (ER) alpha/beta balance seems to have a relevant influence on colorectal carcinogenesis and ER beta appears to parallel apoptosis, and hence an anti-carcinogenic effect. Phytoestrogens are compounds acting as ER beta agonists and have shown a promising chemopreventive effect on sporadic as well as genetically inherited CRC. There is evidence suggesting a role for ERs in UC-related carcinogenesis. In this perspective, since these substances can be considered as dietary supplements and are completely free from side effects, phytoestrogens could be an interesting option for CRC prevention, even when the disease is a consequence of long-term chronic inflammation, as in the course of UC. Further studies of their effects are warranted in both the basic research and clinical fields.
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22
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Myers JN, Schäffer MW, Korolkova OY, Williams AD, Gangula PR, M’Koma AE. Implications of the colonic deposition of free hemoglobin-α chain: a previously unknown tissue by-product in inflammatory bowel disease. Inflamm Bowel Dis 2014; 20:1530-47. [PMID: 25078150 PMCID: PMC4134710 DOI: 10.1097/mib.0000000000000144] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND We analyzed inflamed mucosal/submucosal layers of ulcerative colitis (UC = 63) and Crohn's colitis (CC = 50), and unexpectedly, we unveiled a pool of free hemoglobin alpha (Hb-α) chain. Patients with colitides have increased reactive oxidative stress (ROS), DNA oxidation products, free iron in mucosa, in preneoplastic, and in colitis-cancers and increased risks of developing colorectal cancer. All inflammatory bowel disease-related colorectal cancer lesions are found in segments with colitis. Linking this information, we investigated whether free Hb-α is key transformational stepping that increases colitis-related colorectal cancer vulnerability. METHODS UC/CC samples were profiled using matrix-assisted laser desorption/ionization mass spectrometry; protein identification was made by liquid chromatography. Diverticulitis was used as control (Ctrl). The presence of Hb(n) (n = α, β, or hemin)/Hb was validated by Western blotting and immunohistochemistry. We tested for DNA damage (DNAD) by exposing normal colonic epithelial cell line, NCM460, to 10 μM and 100 μM of Hb(n)/Hb, individually for 2, 6, and 12 hours. Quantification of Hb-α staining was done by Nikon Elements Advance Research Analysis software. ROS was measured by the production of 8-OHdG. DNAD was assessed by Comet assay. Colonic tissue homogenate antioxidants Nrf2-, CAT-, SOD-, and GPx-expressions were analyzed densitometrically/normalized by β-actin. RESULTS Immunohistochemistry of CC/UC mucosal/submucosal compartments stained strongly positive for Hb-α and significantly higher versus Ctrl. NCM460 exposed to Hb(n)/Hb exhibited steadily increasing ROS and subsequent DNAD. DNAD was higher in 10 μM than 100 μM in Hb-β/hemin the first 2 hours then plateaued followed by DNAD repair. This may be likely due to apoptosis in the later concentration. Nrf2 enzyme activities among UC, CC, and ulcerative colitis-associated colon cancer (UCAC) were observed impaired in all inflammatory bowel disease subjects. Decreased levels of Nrf2 among patients with UC versus patients with CC with active disease were insignificant as well as versus Ctrls but significantly lower in UCAC versus Ctrl. SOD was decreased in UC and UCAC and GPx in CC but statistically not significant. Comparing CC versus UC, SOD was significantly lower in CC (P < 0.05). CAT was observed increased among patients with CC/UC/UCAC and GPx in UC and UCAC versus Ctrl, respectively, and significantly increased in CC versus Ctrl (P < 0.01). CONCLUSIONS In the colitides, mucosal/submucosal tissue microenvironments demonstrated pool of free Hb-α chain. In vitro exposure of NCM460 cells to Hb(n)/Hb induced ROS and DNAD. Toxic effect of free Hb-α, in colonic epithelial cells, is therefore through production of ROS formation modulated by impairment of antioxidant effects. Targeting reduction-oxidation-sensitive pathways and transcription factors may offer options for inflammatory bowel disease-management and colitis-related cancer prevention.
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Affiliation(s)
- Jeremy N. Myers
- Department of Biochemistry and Cancer Biology, Meharry Medical College School of Medicine, Nashville, Tennessee
| | - Michael W. Schäffer
- Department of Biochemistry and Cancer Biology, Meharry Medical College School of Medicine, Nashville, Tennessee
| | - Olga Y. Korolkova
- Department of Biochemistry and Cancer Biology, Meharry Medical College School of Medicine, Nashville, Tennessee
| | - Amanda D. Williams
- Department of Biochemistry and Cancer Biology, Meharry Medical College School of Medicine, Nashville, Tennessee
| | - Pandu R. Gangula
- Department of Physiology, Meharry Medical College School of Medicine, Nashville, Tennessee
| | - Amosy E. M’Koma
- Department of Biochemistry and Cancer Biology, Meharry Medical College School of Medicine, Nashville, Tennessee
- Department of Surgery, Vanderbilt University School of Medicine, Nashville, Tennessee
- Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
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Markou P, Apidianakis Y. Pathogenesis of intestinal Pseudomonas aeruginosa infection in patients with cancer. Front Cell Infect Microbiol 2014; 3:115. [PMID: 24432250 PMCID: PMC3882663 DOI: 10.3389/fcimb.2013.00115] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 12/22/2013] [Indexed: 12/11/2022] Open
Affiliation(s)
- Panayiota Markou
- Department of Biological Sciences, University of Cyprus Nicosia, Cyprus
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24
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Tuna G, Küçükhüseyin O, Arıkan S, Kaytan Sağlam E, Güler E, Cacına C, Oztop O, Turan S, Korkmaz G, Yaylım I. Do CDKN2 p16 540 C>G, CDKN2 p16 580 C>T, and MDM2 SNP309 T>G gene variants act on colorectal cancer development or progression? DNA Cell Biol 2013; 32:400-8. [PMID: 23777425 DOI: 10.1089/dna.2012.1933] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
CDNK2 p16 plays a pivotal role in G1/S transition by regulating the p53 pathway, which was regulated by a nuclear oncoprotein, mouse double minute 2 (MDM2). Overexpression of the MDM2 gene has been shown in a number of tumor types, its gene amplification is found to associate with accelerated tumor development and failure to treatment in both hereditary and sporadic cancers. Although genetic association studies have revealed the relationship between certain genetic polymorphisms and genes that play important roles in the development and progression of colorectal cancer (CRC), it is still unknown. Therefore, the polymorphisms of p16 540 C>G, 580 C>T, and MDM2 SNP309 T>G designed to investigate the risk of CRC development and progression in a Turkish population. We enrolled 87 patients with CRC and 75 healthy controls into the study. Genotypings were determined using polymerase chain reaction-restriction fragment length polymorphism techniques. Genotype distributions of p16 540 C>G and 580 C>T were found in agreement with the Hardy-Weinberg equilibrium in patients and controls. MDM2 SNP309 T>G was found in agreement with the Hardy-Weinberg equilibrium in controls, but not in patients. The results of our study, the G allele of p16 540 C>G and GG genotype of MDM2 SNP309 T>G were found significantly lower in patients compared with controls (p<0.001, p<0.05, respectively). Haplotype analyses have shown that the C allele of both the CDKN2 p16 540 C>G and 580 C>T variants together indicate a risk haplotype for the patient group; besides, carrying the G allele of p16 540 and G allele of MDM2 also seems a risk haplotype for the patient group. Our study is the first study that investigates the relationship among variants of CDKN2 p16 540 C>G, 580 C>T, and MDM2 SNP309 T>G risk of CRC and the development and progression in the Turkish population.
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Affiliation(s)
- Gülay Tuna
- Department of Molecular Medicine, The Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
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25
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Chronic epithelial NF-κB activation accelerates APC loss and intestinal tumor initiation through iNOS up-regulation. Proc Natl Acad Sci U S A 2012; 109:14007-12. [PMID: 22893683 DOI: 10.1073/pnas.1211509109] [Citation(s) in RCA: 116] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The role of NF-κB activation in tumor initiation has not been thoroughly investigated. We generated Ikkβ(EE)(IEC) transgenic mice expressing constitutively active IκB kinase β (IKKβ) in intestinal epithelial cells (IECs). Despite absence of destructive colonic inflammation, Ikkβ(EE)(IEC) mice developed intestinal tumors after a long latency. However, when crossed to mice with IEC-specific allelic deletion of the adenomatous polyposis coli (Apc) tumor suppressor locus, Ikkβ(EE)(IEC) mice exhibited more β-catenin(+) early lesions and visible small intestinal and colonic tumors relative to Apc(+/ΔIEC) mice, and their survival was severely compromised. IEC of Ikkβ(EE)(IEC) mice expressed high amounts of inducible nitric oxide synthase (iNOS) and elevated DNA damage markers and contained more oxidative DNA lesions. Treatment of Ikkβ(EE)(IEC)/Apc(+/ΔIEC) mice with an iNOS inhibitor decreased DNA damage markers and reduced early β-catenin(+) lesions and tumor load. The results suggest that persistent NF-κB activation in IEC may accelerate loss of heterozygocity by enhancing nitrosative DNA damage.
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Calvo JA, Meira LB, Lee CYI, Moroski-Erkul CA, Abolhassani N, Taghizadeh K, Eichinger LW, Muthupalani S, Nordstrand LM, Klungland A, Samson LD. DNA repair is indispensable for survival after acute inflammation. J Clin Invest 2012; 122:2680-9. [PMID: 22684101 DOI: 10.1172/jci63338] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Accepted: 05/02/2012] [Indexed: 01/27/2023] Open
Abstract
More than 15% of cancer deaths worldwide are associated with underlying infections or inflammatory conditions, therefore understanding how inflammation contributes to cancer etiology is important for both cancer prevention and treatment. Inflamed tissues are known to harbor elevated etheno-base (ε-base) DNA lesions induced by the lipid peroxidation that is stimulated by reactive oxygen and nitrogen species (RONS) released from activated neutrophils and macrophages. Inflammation contributes to carcinogenesis in part via RONS-induced cytotoxic and mutagenic DNA lesions, including ε-base lesions. The mouse alkyl adenine DNA glycosylase (AAG, also known as MPG) recognizes such base lesions, thus protecting against inflammation-associated colon cancer. Two other DNA repair enzymes are known to repair ε-base lesions, namely ALKBH2 and ALKBH3; thus, we sought to determine whether these DNA dioxygenase enzymes could protect against chronic inflammation-mediated colon carcinogenesis. Using established chemically induced colitis and colon cancer models in mice, we show here that ALKBH2 and ALKBH3 provide cancer protection similar to that of the DNA glycosylase AAG. Moreover, Alkbh2 and Alkbh3 each display apparent epistasis with Aag. Surprisingly, deficiency in all 3 DNA repair enzymes confers a massively synergistic phenotype, such that animals lacking all 3 DNA repair enzymes cannot survive even a single bout of chemically induced colitis.
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Affiliation(s)
- Jennifer A Calvo
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
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27
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Molecular changes consistent with increased proliferation and invasion are common in rectal cancer. Clin Transl Oncol 2011; 13:753-9. [DOI: 10.1007/s12094-011-0728-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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28
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Xu H, Fu Z, Shah A, Chen Y, Peterson NB, Chen Q, Mani S, Levy MA, Dai Q, Denny JC. Extracting and integrating data from entire electronic health records for detecting colorectal cancer cases. AMIA ... ANNUAL SYMPOSIUM PROCEEDINGS. AMIA SYMPOSIUM 2011; 2011:1564-1572. [PMID: 22195222 PMCID: PMC3243156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Identification of a cohort of patients with specific diseases is an important step for clinical research that is based on electronic health records (EHRs). Informatics approaches combining structured EHR data, such as billing records, with narrative text data have demonstrated utility for such tasks. This paper describes an algorithm combining machine learning and natural language processing to detect patients with colorectal cancer (CRC) from entire EHRs at Vanderbilt University Hospital. We developed a general case detection method that consists of two steps: 1) extraction of positive CRC concepts from all clinical notes (document-level concept identification); and 2) determination of CRC cases using aggregated information from both clinical narratives and structured billing data (patient-level case determination). For each step, we compared performance of rule-based and machine-learning-based approaches. Using a manually reviewed data set containing 300 possible CRC patients (150 for training and 150 for testing), we showed that our method achieved F-measures of 0.996 for document level concept identification, and 0.93 for patient level case detection.
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Affiliation(s)
- Hua Xu
- Department of Biomedical Informatics, Vanderbilt University, School of Medicine, Nashville, TN, USA
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29
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Abstract
This review gives a comprehensive overview of cancer development and links it to the current understanding of tumorigenesis and malignant progression in colorectal cancer. The focus is on human and murine colorectal carcinogenesis and the histogenesis of this malignant disorder. A summary of a model of colitis-associated colon tumorigenesis (an AOM/DSS model) will also be presented. The earliest phases of colorectal oncogenesis occur in the normal mucosa, with a disorder of cell replication. The large majority of colorectal malignancies develop from an adenomatous polyp (adenoma). These can be defined as well-demarcated masses of epithelial dysplasia, with uncontrolled crypt cell proliferation. When neoplastic cells pass through the muscularis mucosa and infiltrate the submucosa, they are malignant. Carcinomas usually originate from pre-existing adenomas, but this does not imply that all polyps undergo malignant changes and does not exclude de novo oncogenesis. Besides adenomas, there are other types of pre-neoplasia, which include hyperplastic polyps, serrated adenomas, flat adenomas and dysplasia that occurs in the inflamed colon in associated with inflammatory bowel disease. Colorectal neoplasms cover a wide range of pre-malignant and malignant lesions, many of which can easily be removed during endoscopy if they are small. Colorectal neoplasms and/or pre-neoplasms can be prevented by interfering with the various steps of oncogenesis, which begins with uncontrolled epithelial cell replication, continues with the formation of adenomas and eventually evolves into malignancy. The knowledge described herein will help to reduce and prevent this malignancy, which is one of the most frequent neoplasms in some Western and developed countries.
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Affiliation(s)
- Takuji Tanaka
- Department of Oncologic Pathology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa 920-0293, Japan.
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30
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M'Koma AE, Moses HL, Adunyah SE. Inflammatory bowel disease-associated colorectal cancer: proctocolectomy and mucosectomy do not necessarily eliminate pouch-related cancer incidences. Int J Colorectal Dis 2011; 26:533-52. [PMID: 21311893 PMCID: PMC4154144 DOI: 10.1007/s00384-011-1137-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/16/2011] [Indexed: 02/07/2023]
Abstract
BACKGROUND Colorectal cancer (CRC), the most lethal long-term complication of inflammatory bowel disease (IBD), is the culmination of a complex sequence of molecular and histologic derangements of the colon epithelium that are initiated and at least partially sustained by prolonged chronic inflammation. Dysplasia, the earliest histologic manifestation of this process, plays an important role in cancer prevention by providing the first clinical alert that this sequence is under way and by serving as an endpoint in colonoscopic surveillance of patients at high risk for CRC. Restorative proctocolectomy (RPC) is indicated for patients with IBD, specifically for ulcerative colitis that is refractory to medical treatment, emergency conditions, and/or in case of neoplastic transformation. Even after RPC with mucosectomy, pouch-related carcinomas have recently been reported with increasing frequency since the first report in 1984. We review IBD-associated CRC and pouch-related neoplasia prevalence, adverse events, risk factors, and surveillances. METHODS Literature of IBD-associated CRC patients and those undergoing RPC surgeries through 2010 were prospectively reviewed. RESULTS We found 12 studies from retrospective series and 15 case reports. To date, there are 43 reported cases of pouch-related cancers. Thirty-two patients had cancer in the anal transit zone (ATZ); of these, 28 patients had mucosectomy. Eleven patients had cancer found in the pouch body. CONCLUSION RPC with mucosectomy does not necessarily eliminate risks. There is little evidence to support routine surveillance of pouch mucosa and the ATZ except for patients associated with histological type C changes, sclerosing cholangitis, and unremitting pouchitis.
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Affiliation(s)
- Amosy E M'Koma
- Department of Biochemistry and Cancer Biology, Meharry Medical College School of Medicine, 1005 Dr. D. B. Todd Jr. Blvd, Nashville, TN 37208-3599, USA.
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Abstract
OBJECTIVE Colorectal cancer (CRC) represents the third most common cancer diagnosed and a major cause of cancer-related deaths in women. Despite strong evidence that early screening decreases colorectal cancer incidence and mortality rates, colorectal cancer screening rates in women still lag significantly behind screening rates for breast and cervical cancers. Additionally, women have been found to be less likely than men to undergo CRC screening. This is despite the fact that the overall lifetime risk for the development of colorectal carcinoma is similar in both sexes. Barriers to screening have been found to be different for women compared with men. Screening adherence in women also appears to be associated with various social and demographic factors. CONCLUSION CT colonography (CTC) is an accurate, minimally invasive, and well-tolerated examination that is newly endorsed by the American Cancer Society, U.S. Multisociety Task Force, and the American College of Radiology. Improved screening compliance may occur in women with further dissemination of CTC.
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32
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Talero E, Sánchez-Fidalgo S, Villegas I, de la Lastra CA, Illanes M, Motilva V. Role of different inflammatory and tumor biomarkers in the development of ulcerative colitis-associated carcinogenesis. Inflamm Bowel Dis 2011; 17:696-710. [PMID: 20722052 DOI: 10.1002/ibd.21420] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Accepted: 06/08/2010] [Indexed: 12/21/2022]
Abstract
BACKGROUND Colorectal cancer (CRC) is the most severe complication in inflammatory bowel disease (IBD). In the present study we investigated different mechanistic links between chronic colonic inflammation and its progression to adenocarcinoma. Along these lines, given that adrenomedullin (AM) has been implicated in carcinogenesis, we also analyzed changes in its colonic expression. METHODS Mice were exposed to 5, 10, and 15 cycles of dextran sulfate sodium (DSS); each cycle consisted of 0.7% DSS for 1 week followed by distilled water for 10 days. After each period, macroscopic and histological studies, as well as characterization of inflammatory and tumor biomarkers, were carried out. RESULTS The disease activity index (DAI) showed that the disease was present from the third cycle and it gradually increased during the course of DSS treatment. Macroscopic tumors were only seen after 15 cycles, and microscopic study showed that inflammation, dysplasia, and adenocarcinomas correlated with DSS cycles. β-Catenin and proliferating cell nuclear antigen expressions progressively increased in animals treated with the different cycles of DSS. TNF-α and IFN-γ showed the highest production at the tenth cycle. COX-2, mPGES-1, and iNOS levels were also appreciably higher at the fifth and tenth cycles. Moreover, we observed a progressive enhancement in AM expression and changes in its intracellular location during the progression of the disease. CONCLUSIONS Our results show an early induction of proinflammatory factors, which may contribute to the development of colon cancer, as well as demonstrate, for the first time, the expression of AM in IBD-derived CRC.
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Affiliation(s)
- E Talero
- Department of Pharmacology, School of Pharmacy, University of Seville, Seville, Spain.
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33
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Kanneganti M, Mino-Kenudson M, Mizoguchi E. Animal models of colitis-associated carcinogenesis. J Biomed Biotechnol 2011; 2011:342637. [PMID: 21274454 PMCID: PMC3025384 DOI: 10.1155/2011/342637] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Revised: 12/08/2010] [Accepted: 12/10/2010] [Indexed: 12/25/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a group of chronic inflammatory disorders that affect individuals throughout life. Although the etiology and pathogenesis of IBD are largely unknown, studies with animal models of colitis indicate that dysregulation of host/microbial interactions are requisite for the development of IBD. Patients with long-standing IBD have an increased risk for developing colitis-associated cancer (CAC), especially 10 years after the initial diagnosis of colitis, although the absolute number of CAC cases is relatively small. The cancer risk seems to be not directly related to disease activity, but is related to disease duration/extent, complication of primary sclerosing cholangitis, and family history of colon cancer. In particular, high levels and continuous production of inflammatory mediators, including cytokines and chemokines, by colonic epithelial cells (CECs) and immune cells in lamina propria may be strongly associated with the pathogenesis of CAC. In this article, we have summarized animal models of CAC and have reviewed the cellular and molecular mechanisms underlining the development of carcinogenic changes in CECs secondary to the chronic inflammatory conditions in the intestine. It may provide us some clues in developing a new class of therapeutic agents for the treatment of IBD and CAC in the near future.
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Affiliation(s)
- Manasa Kanneganti
- Gastrointestinal Unit, Department of Medicine, Harvard Medical School, Massachusetts General Hospital, GRJ 702, 55 Fruit Street, Boston, MA 02114, USA
| | - Mari Mino-Kenudson
- Department of Pathology, Harvard Medical School, Massachusetts General Hospital, GRJ 702, 55 Fruit Street, Boston, MA 02114, USA
| | - Emiko Mizoguchi
- Gastrointestinal Unit, Department of Medicine, Harvard Medical School, Massachusetts General Hospital, GRJ 702, 55 Fruit Street, Boston, MA 02114, USA
- Center for the Study of Inflammatory Bowel Disease, Harvard Medical School, Massachusetts General Hospital, GRJ 702, 55 Fruit Street, Boston, MA 02114, USA
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34
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Castillo-Alcala F, Mans C, Bos AS, Taylor WM, Smith DA. Clinical and pathologic features of an adenomatous polyp of the colon in a domestic ferret (Mustela putorius furo). THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2010; 51:1261-1264. [PMID: 21286327 PMCID: PMC2957035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A 6-year-old castrated male domestic ferret (Mustela putorius furo) with a 4-week history of intermittent diarrhea and straining during defecation had an intraluminal mass in the descending colon identified by abdominal ultrasound. The histopathological diagnosis of the resected mass was an adenomatous polyp of the colon. No post-operative complications were identified over a 32-month follow-up period.
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Affiliation(s)
| | | | | | | | - Dale A. Smith
- Address all correspondence to Dr. Dale Smith; e-mail:
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35
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Wong HL, Peters U, Hayes RB, Huang WY, Schatzkin A, Bresalier RS, Velie EM, Brody LC. Polymorphisms in the adenomatous polyposis coli (APC) gene and advanced colorectal adenoma risk. Eur J Cancer 2010; 46:2457-66. [PMID: 20510605 PMCID: PMC2924917 DOI: 10.1016/j.ejca.2010.04.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Revised: 04/14/2010] [Accepted: 04/20/2010] [Indexed: 02/07/2023]
Abstract
While germline mutations in the adenomatous polyposis coli (APC) gene cause the hereditary colon cancer syndrome (familial adenomatous polyposis (FAP)), the role of common germline APC variants in sporadic adenomatous polyposis remains unclear. We studied the association of eight APC single nucleotide polymorphisms (SNPs), possibly associated with functional consequences, and previously identified gene-environment (dietary fat intake and hormone replacement therapy (HRT) use) interactions, in relation to advanced colorectal adenoma in 758 cases and 767 sex- and race-matched controls, randomly selected from the screening arm of the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial. Cases had at least one verified advanced adenoma of the distal colon; controls, a negative sigmoidoscopy. We did not observe an association between genotypes for any of the eight APC SNPs and advanced distal adenoma risk (P(global gene-based)=0.92). Frequencies of identified common haplotypes did not differ between cases and controls (P(global haplotype test)=0.97). However, the risk for advanced distal adenoma was threefold higher for one rare haplotype (cases: 2.7%; controls: 1.6%) (odds ratio (OR)=3.27; 95% confidence interval (CI)=1.08-9.88). The genetic association between D1822V and advanced distal adenoma was confined to persons consuming a high-fat diet (P(interaction)=0.03). Similar interactions were not observed with HRT use. In our large, nested case-control study of advanced distal adenoma and clinically verified adenoma-free controls, we observed no association between specific APC SNPs and advanced adenoma. Fat intake modified the APC D1822V-adenoma association, but further studies are warranted.
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Affiliation(s)
- Hui-Lee Wong
- Department of Health and Human Services, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Rockville, MD
| | - Ulrike Peters
- Department of Health and Human Services, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Rockville, MD
- Cancer Prevention Research Program, Fred Hutchinson Cancer Research Center, Seattle, WA
- Department of Epidemiology, School of Public Health, University of Washington, Seattle, WA
| | - Richard B. Hayes
- Department of Health and Human Services, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Rockville, MD
| | - Wen-Yi Huang
- Department of Health and Human Services, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Rockville, MD
| | - Arthur Schatzkin
- Department of Health and Human Services, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Rockville, MD
| | - Robert S. Bresalier
- Department of Gastrointestinal Medicine and Nutrition, M.D. Anderson Cancer Center, Houston, TX
| | - Ellen M. Velie
- Department of Epidemiology, Michigan State University, East Lansing, MI
| | - Lawrence C. Brody
- Department of Health and Human Services, Genome Technology Branch, National Human Genome Research Institute, National Institutes of Health, NIH, Bethesda MD
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Norwood MGA, Bailey N, Nanji M, Gillies RS, Nicholson A, Ubhi S, Darnton JJ, Steyn RS, Womack C, Hughes A, Hemingway D, Harrison R, Waters R, Jankowski JA. Cytoplasmic beta-catenin accumulation is a good prognostic marker in upper and lower gastrointestinal adenocarcinomas. Histopathology 2010; 57:101-11. [PMID: 20572881 DOI: 10.1111/j.1365-2559.2010.03587.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AIMS beta-Catenin is an important molecule in cancer biology. Membranous beta-catenin enhances cellular differentiation and inhibits invasion by its action on E-cadherin. The aim was to ascertain whether the cellular expression of these molecules in colorectal and oesophageal cancer specimens is associated with survival in patients with gastrointestinal cancer. METHODS AND RESULTS Tumour samples from 149 patients undergoing resection for colorectal adenocarcinoma and 147 patients undergoing resection for oesophageal adenocarcinoma were retrospectively analysed using immunohistochemical techniques to assess beta-catenin expression. Increasing beta-catenin expression in the cytoplasm was associated with improved survival for colorectal cancer cases on both univariate (P = 0.003) and multivariate (P = 0.01) analysis. In addition, increased expression in the most recent cohort of oesophageal adenocarcinoma patients was associated with improved TNM staging (P = 0.007). Membrane expression was weakly associated with survival in colorectal cancer on univariate analysis (P = 0.09), but not on multivariate analysis (P = 0.21). Complete absence of beta-catenin expression at all three sites was associated with reduced 5-year survival in colorectal cancer. CONCLUSIONS This is one of the largest prognostic studies of beta-catenin in gastrointestinal adenocarcinoma. It shows that low levels of cytoplasmic beta-catenin expression are associated with reduced survival in patients with colorectal cancer as well as worse TNM staging in oesophageal adenocarcinoma (a recognized surrogate end-point for survival). We believe this is the first time that this has been reported. This finding should be tested prospectively in oncological trials to validate whether the presence of cytoplasmic beta-catenin could be used as a prognostic marker for less aggressive disease.
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Affiliation(s)
- Michael G A Norwood
- Digestive Disease Centre and Department of Surgery, Leicester Royal Infirmary, Leicester, UK
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Park JY, Mitrou PN, Keen J, Dahm CC, Gay LJ, Luben RN, McTaggart A, Khaw KT, Ball RY, Arends MJ, Rodwell SA. Lifestyle factors and p53 mutation patterns in colorectal cancer patients in the EPIC-Norfolk study. Mutagenesis 2010; 25:351-8. [PMID: 20228093 DOI: 10.1093/mutage/geq012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The tumour suppressor p53 is one of the most commonly altered genes in colorectal cancer (CRC) development. Genetic alterations in p53 may therefore be associated with postulated lifestyle risk factors for CRC, such as red meat consumption. In the European Prospective Investigation into Cancer and Nutrition-Norfolk study, we examined whether detailed estimates of dietary and lifestyle factors measured at baseline related to later development of p53 mutations in CRCs. After 10-year follow-up, there were 185 incident CRCs of which 34% had somatic p53 mutations (p53+). We observed significantly higher mean intakes of alcohol, total meat and red meat, in the group with p53 mutations and advanced Dukes' stage disease (daily alcohol intake was 7 and 12 g for p53- and p53+ cases, respectively, P = 0.04; daily total meat intake was 69 and 100 g for p53- and p53+ cases, respectively, P = 0.03 and daily red meat intake was 39 and 75 g for p53- and p53+ cases, respectively, P = 0.01). Each 50 g/day increment in total meat intake was associated with having p53 mutations in cases with advanced Dukes' stages [odds ratio (OR): 3.43, 95% confidence interval (CI): 1.47-7.96]. Similarly, each 50 g/day increment in red meat intake was also significantly associated with having consistent p53 mutations in cases with advanced Dukes' stages (OR: 2.42, 95% CI: 1.18-4.96). These effects of total meat or red meat intake and advanced Dukes' stages were independent of age, sex, body mass index, smoking and alcohol intake. Furthermore, P values for interaction between daily total meat or red meat intake and Dukes' stages were statistically significant in multivariable models (Pinteraction < 0.001). Our results suggest that p53 mutations accelerate progression of CRC to advanced Dukes' stage in association with higher meat especially red meat intakes.
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Affiliation(s)
- Jin Young Park
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
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Zhu D, Xing D, Tang Y, Zhang L. A novel mutant allele specific amplification and electrochemiluminescence method for the detection of point mutation in clinical samples. Biosens Bioelectron 2009; 24:3306-10. [DOI: 10.1016/j.bios.2009.04.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2009] [Revised: 04/17/2009] [Accepted: 04/17/2009] [Indexed: 11/25/2022]
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West NJ, Boustière C, Fischbach W, Parente F, Leicester RJ. Colorectal cancer screening in Europe: differences in approach; similar barriers to overcome. Int J Colorectal Dis 2009; 24:731-40. [PMID: 19296117 DOI: 10.1007/s00384-009-0690-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/26/2009] [Indexed: 02/04/2023]
Abstract
Worldwide diagnoses of bowel cancer approximate an estimated one million new cases per year, comprising 9% of all cancer cases, and this has continued to increase over the last 25 years. With the association between cancer risk and increasing age, together with the suggestion that by 2015 there will be a 22% increase in the proportion of the population aged over 65 years and a 50% increase in the proportion of people aged over 80 years, there is likely to be a significant increase in the demand on cancer services throughout Europe and the rest of the world. This article discusses the current state of bowel cancer screening within Europe.
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40
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Positron Emission Tomography and Colorectal Cancer. COLORECTAL CANCER 2009. [DOI: 10.1007/978-1-4020-9545-0_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Toma M, Cimponeriu D, Pompilia A, Stavarachi M, Beluşică L, Radu I, Gavrilă L. Molecular analysis of mutations for the adenomatous polyposis coli (APC) gene in Romanian patients with colorectal cancer. J Med Life 2008; 1:423-8. [PMID: 20108522 PMCID: PMC5654204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Mutations in adenomatous polyposis coli (APC) gene have not been previously characterized among Romanian patients with colorectal cancer (CRC). We initiate this study to detect the mutations in APC gene in blood and tumor samples collected from 16 patients (10 men and 6 women) and blood samples from 21 first and second degree relatives of the patients. For this the presence of mutations in exons 6, 7, 12, 13, 14 as well as in regions B, L and W of exon 15 was investigated using PCR multiplex. In the same time, we have searched for 5 bp deletions at codon 1061 of APC gene by PAGE and SSCP methods. These methods allowed us to evidence identification of the presence of mutations in samples from 7 individuals. In one patient, was detected a deletion of exon 13th of APC gene both in DNA extracted from blood and tumor samples. Multiple deletions (e.g. in exon 6, 12, and in 15L and 15W regions) in DNA extracted from the tumor sample were detected, but not in DNA probe obtained from blood cells. We can speculate that these mutations are an example of genomic instability accompanying the malignancy. Till now, no mutation affecting 1061 codon of APC gene was identified in the patients investigated in our study.
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Affiliation(s)
- M Toma
- Departamentul de Genetică Umană, Institutul de Genetică, Universitatea din Bucureşti;
| | - D Cimponeriu
- Departamentul de Genetică Umană, Institutul de Genetică, Universitatea din Bucureşti;
| | - A Pompilia
- Departamentul de Genetică Umană, Institutul de Genetică, Universitatea din Bucureşti;
| | - M Stavarachi
- Departamentul de Genetică Umană, Institutul de Genetică, Universitatea din Bucureşti;
| | - L Beluşică
- Spitalul Clinic I. Cantacuzino, Bucureşti
| | - I Radu
- Departamentul de Genetică Umană, Institutul de Genetică, Universitatea din Bucureşti;
| | - L Gavrilă
- Departamentul de Genetică Umană, Institutul de Genetică, Universitatea din Bucureşti;
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Jiang LX, Xu J, Wang ZW, Li DP, Peng ZH, Gao JJ, He L, Zheng HT. Tumor suppress genes screening analysis on 4q in sporadic colorectal carcinoma. World J Gastroenterol 2008; 14:5606-11; discussion 5609-10. [PMID: 18810782 PMCID: PMC2746351 DOI: 10.3748/wjg.14.5606] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [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 search candidate tumor suppressor genes (TSGs) on chromosome 4q through detecting high loss of heterozygosity (LOH) regions in sporadic colorectal carcinoma in Chinese patients.
METHODS: Thirteen fluorescent labeled polymorphic microsatellite markers were analyzed in 83 cases of colorectal carcinoma and matched normal tissue DNA by polymerase chain reaction (PCR). PCR products were electrophoresed on an ABI 377 DNA sequencer. Genescan 3.7 and Genotype 3.7 software were used for LOH scanning and analysis. Comparison between LOH frequency and clinicopathological factors were performed by χ2 test.
RESULTS: Data were collected on all informative loci. The average LOH frequency on 4q was 28.56%. The D4S2915 locus showed highest LOH frequency (36.17%). Two obvious deletion regions were detected: one between D4S3000 and D4S2915 locus (4q12-21.1), another flanked by D4S407 and D4S2939 locus (4q25-31.1). None case showed complete deletion of 4q, most cases displayed interstitial deletion pattern solely. Furthermore, compared with clinicopathological features, a significant relationship was observed between LOH frequencies on D4S3018 locus. In tumors larger than 5 cm in diameter, LOH frequency was significantly higher than tumors that were less than 5 cm (56% vs 13.79%, P = 0.01). On D4S1534 locus, LOH was significantly associated with liver metastasis (80% vs 17.25%, P = 0.012). No relationship was detected on other locus compared with clinicopathological features.
CONCLUSION: By high resolution deletion mapping, two high frequency regions of LOH (4q12-21.1 and 4q25-31.1) were detected, which may contribute to locate TSGs on chromosome 4q involved in carcinogenesis and progression of sporadic colorectal carcinoma.
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West NJ, Poullis AP, Leicester RJ. The NHS Bowel Cancer Screening Programme--a realistic approach with additional benefits. Colorectal Dis 2008; 10:708-14. [PMID: 17956587 DOI: 10.1111/j.1463-1318.2007.01396.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Colorectal cancer (CRC) is the third most common cancer and the second most common cause of cancer death in the UK with 36 100 new cases diagnosed each year in England and Wales and 55% of all patients presenting with lymph node metastases at the time of diagnosis. Early detection, before the development of symptoms, may be an effective way of reducing mortality and it is this which a screening programme seeks to address. The NHS Bowel Cancer Screening Programme (NHS BCSP) commenced in April 2006 and invites men and women aged 60-69 to participate via submission of a faecal occult blood test every 2 years; those with a positive result will be offered colonoscopy as the next investigation of choice. This article will explore the background to the programme, including the financial considerations behind it and the implication that this has had on colonoscopy standards and training in the UK. The chosen programme is not the most effective neither in terms of survival benefit nor cost effectiveness but is a compromise within a financially strained health care system. Endoscopy standards because of its introduction have, however, considerably improved in terms of patient experience, safety and improved practice.
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Affiliation(s)
- N J West
- Department of Endoscopy, St George's Hospital, London, UK.
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Modeling the influence of the E-cadherin-beta-catenin pathway in cancer cell invasion: a multiscale approach. Biophys J 2008; 95:155-65. [PMID: 18339758 DOI: 10.1529/biophysj.107.114678] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In this article, we show, using a mathematical multiscale model, how cell adhesion may be regulated by interactions between E-cadherin and beta-catenin and how the control of cell adhesion may be related to cell migration, to the epithelial-mesenchymal transition and to invasion in populations of eukaryotic cells. E-cadherin mediates cell-cell adhesion and plays a critical role in the formation and maintenance of junctional contacts between cells. Loss of E-cadherin-mediated adhesion is a key feature of the epithelial-mesenchymal transition. beta-catenin is an intracellular protein associated with the actin cytoskeleton of a cell. E-cadherins bind to beta-catenin to form a complex which can interact both with neighboring cells to form bonds, and with the cytoskeleton of the cell. When cells detach from one another, beta-catenin is released into the cytoplasm, targeted for degradation, and downregulated. In this process there are multiple protein-complexes involved which interact with beta-catenin and E-cadherin. Within a mathematical individual-based multiscale model, we are able to explain experimentally observed patterns solely by a variation of cell-cell adhesive interactions. Implications for cell migration and cancer invasion are also discussed.
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Kuefner MA, Schwelberger HG, Hahn EG, Raithel M. Decreased histamine catabolism in the colonic mucosa of patients with colonic adenoma. Dig Dis Sci 2008; 53:436-42. [PMID: 17562176 DOI: 10.1007/s10620-007-9861-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2006] [Accepted: 04/30/2007] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Alterations in mucosal histamine degradation play an important role in various gastrotinestinal diseases including colonic adenoma. In humans, histamine can be catabolized either by oxidative deamination by diamine oxidase (DAO) or by ring methylation by histamine N-methyltransferase (HNMT). The significance of HNMT in this context was investigated for the first time in this project. METHODS About 94 colonic biopsies were endoscopically obtained from 23 patients suffering from colonic adenoma and 26 biopsies from six healthy individuals. Each sample was mechanically homogenized, homogenates were cleared by centrifugation and used for determination of protein and histamine concentrations and enzyme activities of DAO and HNMT by radiometric assay. RESULTS In adenoma patients DAO activities were slightly and HNMT activities were significantly decreased in normal mucosa compared to controls. Activities of both enzymes were significantly lower in adenoma tissue than in healthy mucosa in the same patients. A significant correlation was found between HNMT and DAO in all investigated samples. Histamine concentrations were elevated in adenoma patients. CONCLUSIONS Histamine catabolism is decreased in the colonic mucosa of patients with colonic adenoma.
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Affiliation(s)
- Michael A Kuefner
- Radiologisches Institut, Universität Erlangen-Nürnberg, Maximiliansplatz 1, 91054 Erlangen, Germany.
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Zheng HT, Jiang LX, Lv ZC, Li DP, Zhou CZ, Gao JJ, He L, Peng ZH. Are there tumor suppressor genes on chromosome 4p in sporadic colorectal carcinoma? World J Gastroenterol 2008; 14:90-4. [PMID: 18176968 PMCID: PMC2673398 DOI: 10.3748/wjg.14.90] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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 study the candidate tumor suppressor genes (TSG) on chromosome 4p by detecting the high frequency of loss of heterozygosity (LOH) in sporadic colorectal carcinoma in Chinese patients.
METHODS: Seven fluorescent labeled polymorphic microsatellite markers were analyzed in 83 cases of colorectal carcinoma and matched normal tissue DNA by PCR. PCR products were eletrophoresed on an ABI 377 DNA sequencer. Genescan 3.7 and Genotype 3.7 software were used for LOH scanning and analysis. The same procedure was performed by the other six microsatellite markers spanning D4S3013 locus to make further detailed deletion mapping. Comparison between LOH frequency and clinicopathological factors was performed by χ2 test.
RESULTS: Data were collected from all informative loci. The average LOH frequency on 4p was 24.25%, and 42.3% and 35.62% on D4S405 and D4S3013 locus, respectively. Adjacent markers of D4S3013 displayed a low LOH frequency (< 30%) by detailed deletion mapping. Significant opposite difference was observed between LOH frequency and tumor diameter on D4S412 and D4S1546 locus (0% vs 16.67%, P = 0.041; 54.55% vs 11.11%, P = 0.034, respectively). On D4S403 locus, LOH was significantly associated with tumor gross pattern (11.11%, 0, 33.33%, P = 0.030). No relationship was detected on other loci compared with clinicopathological features.
CONCLUSION: By deletion mapping, two obvious high frequency LOH regions spanning D4S3013 (4p15.2) and D4S405 (4p14) locus are detected. Candidate TSG, which is involved in carcinogenesis and progression of sporadic colorectal carcinoma on chromosome 4p, may be located between D4S3017 and D4S2933 (about 1.7 cm).
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DNA Ploidy in the Treatment of Large Bowel Adenocarcinoma: A Follow up Study. POLISH JOURNAL OF SURGERY 2008. [DOI: 10.2478/v10035-007-0126-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Relationship of diagnostic and therapeutic delay with survival in colorectal cancer: a review. Eur J Cancer 2007; 43:2467-78. [PMID: 17931854 DOI: 10.1016/j.ejca.2007.08.023] [Citation(s) in RCA: 115] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Accepted: 08/22/2007] [Indexed: 12/23/2022]
Abstract
BACKGROUND Early diagnosis of colorectal cancer before the onset of symptoms improves survival. Once symptoms have occurred, however, the effect of delay on survival is unclear. We review here evidence on the relationship of diagnostic and therapeutic delay with survival in colorectal cancer. METHODS We conducted a systematic of Medline, Embase, Cancerlit and the Cochrane Database of Systematic Reviews to identify publications published between 1962 and 2006 dealing with delay, survival and colon cancer. A meta-analysis was performed based on the calculation of the relative risk (RR) and on a model of random effects. RESULTS We identified 40 studies, representing 20,440 patients. Fourteen studies were excluded due to excessively restricted samples (e.g. exclusion of patients with intestinal obstruction, with tumours at stage C or D at the time of diagnosis, or who died 1-3 months after surgery); or because they studied only a portion of the delay. Of the 26 remaining studies, 20 showed no association between delay and survival. In contrast, four studies showed that delay was a factor contributing to better prognosis, and two showed that it contributed to poorer prognosis. There was no association between delay and survival when the colon and rectum were considered separately, when a multivariate analysis was performed, and when the effects of tumour stage and degree of differentiation were taken into account. To perform a meta-analysis, 18 additional studies were excluded, since the published articles did not specify the absolute numbers. In the remaining eight studies, the combined relative risk (RR) of delay was 0.92 (confidence interval (CI) 95%: 0.87-0.97). CONCLUSIONS The results of the review suggest that there is no association between diagnostic and therapeutic delay and survival in colorectal cancer patients. Colon and rectum should be assessed separately, and it is necessary to adjust for other relevant variables such as tumour stage.
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Clapper ML, Cooper HS, Chang WCL. Dextran sulfate sodium-induced colitis-associated neoplasia: a promising model for the development of chemopreventive interventions. Acta Pharmacol Sin 2007; 28:1450-9. [PMID: 17723178 DOI: 10.1111/j.1745-7254.2007.00695.x] [Citation(s) in RCA: 139] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Individuals diagnosed with ulcerative colitis face a significantly increased risk of developing colorectal dysplasia and cancer during their lifetime. To date, little attention has been given to the development of a chemopreventive intervention for this high-risk population. The mouse model of dextran sulfate sodium (DSS) - induced colitis represents an excellent preclinical system in which to both characterize the molecular events required for tumor formation in the presence of inflammation and assess the ability of select agents to inhibit this process. Cyclic administration of DSS in drinking water results in the establishment of chronic colitis and the development of colorectal dysplasias and cancers with pathological features that resemble those of human colitis-associated neoplasia. The incidence and multiplicity of lesions observed varies depending on the mouse strain used (ie, Swiss Webster, C57BL/6J, CBA, ICR) and the dose (0.7%-5.0%) and schedule (1-15 cycles with or without a subsequent recovery period) of DSS. The incidence of neoplasia can be increased and its progression to invasive cancer accelerated significantly by administering DSS in combination with a known colon carcinogen (azoxymethane (AOM), 2-amino-3-methylimidazo[4,5-f]quinoline (IQ), 2-amino-1- methyl-6-phenylimidazo[4,5-b]pyridine (PhIP)) or iron. More recent induction of colitis-associated neoplasia in genetically defined mouse strains has provided new insight into the role of specific genes (ie, adenomatous polyposis coli (Apc), p53, inducible nitric oxide synthase (iNOS), Msh2) in the development of colitis-associated neoplasias. Emerging data from chemopreventive intervention studies document the efficacy of several agents in inhibiting DSS-induced neoplasia and provide great promise that colitis-associated colorectal neoplasia is a preventable disease.
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Affiliation(s)
- Margie Lee Clapper
- Division of Population Science, Fox Chase Cancer Center, Philadelphia, PA 19111, USA.
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50
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Jones M, Helliwell P, Pritchard C, Tharakan J, Mathew J. Helicobacter pylori in colorectal neoplasms: is there an aetiological relationship? World J Surg Oncol 2007; 5:51. [PMID: 17498313 PMCID: PMC1885433 DOI: 10.1186/1477-7819-5-51] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2006] [Accepted: 05/12/2007] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND This pilot study was carried out to determine whether Helicobacter pylori can be detected in normal colon or in association with colorectal neoplasia. METHODS Paraffin processed colonic tissue blocks of normal colonic mucosa (n = 60), and patients diagnosed as adenoma (n = 60), and adenocarcinoma (n = 60) were retrieved from our archive; the adenoma group included tubular (n = 20), tubulovillous (n = 20) and villous adenomas (n = 20). 4 mum sections were stained by immunohistochemical methods using anti-Helicobacter pylori antibodies (polyclonal NCL-HPp and monoclonal NCL-C-jejuni). RESULTS Significant numbers of Helicobacter pylori were identified in tubular adenomas (OR = 11.13; 95%CI = 1.62-76.70), tubulovillous adenomas (OR = 10.45; 95%CI = 1.52-71.52) and adenocarcinomas (OR = 8.13; 95%CI = 1.40-46.99) compared to controls: there was no association in numbers of Helicobacter pylori and villous adenomas (OR = 2.95; 95%CI = 0.29-9.96). CONCLUSION We conclude that although, in this pilot study, there appears to be an association in the prevalence of Helicobacter pylori with some, but not all, colorectal neoplasms, we can not infer causality from these results. These findings need to be further substantiated with a prospective study and the use of molecular biological techniques to determine a causal association.
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Affiliation(s)
- Mary Jones
- Department of Histopathology, Royal Cornwall Hospital, Truro, TR1 3LJ, UK
| | - Peter Helliwell
- Department of Histopathology, Royal Cornwall Hospital, Truro, TR1 3LJ, UK
| | - Colin Pritchard
- Department of Research and Development, Royal Cornwall Hospital, Truro, TR1 3LJ, UK
| | - Joseph Tharakan
- Department of Medicine, Princess Alexandra Hospital, Harlow, Essex, UK
| | - Joseph Mathew
- Department of Histopathology, Royal Cornwall Hospital, Truro, TR1 3LJ, UK
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