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Rong J, Pu R, Sun H, Liu Y, Tian T, Bi H, Xia T, Zhang L, Zhang Y, Zhao Y, Zhu L. Association between the Methylation of CpG Islands in JAK-STAT Pathway-Related Genes and Colorectal Cancer. Gene 2023; 868:147357. [PMID: 36914143 DOI: 10.1016/j.gene.2023.147357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/21/2023] [Accepted: 03/07/2023] [Indexed: 03/13/2023]
Abstract
BACKGROUND Aberrant promoter methylation of CpG islands plays an important role in carcinogenesis. However, the association between the DNA methylation of JAK-STAT pathway-related genes in peripheral blood leukocytes and colorectal cancer (CRC) susceptibility remains unclear. METHODS We conducted a case-control study of 403 patients with CRC and 419 cancer free controls, and the DNA methylation levels of JAK2, STAT1, STAT3, and SOCS3 in peripheral blood samples from all subjects were assessed using a methylation-sensitive high-resolution melting (MS-HRM) analysis. RESULTS Compared with controls, the methylation of the JAK2, STAT1 and SOCS3 genes increased the CRC risk (ORadjusted=1.96, 95% CI, 1.12-3.41, P=0.01; ORadjusted=5.37, 95% CI, 3.74-7.71, P<0.01; ORadjusted=3.30, 95% CI, 1.58-6.87, P<0.01). In the multiple CpG site methylation (MCSM) analysis, a high MCSM value denoted an increased CRC risk (ORadjusted=4.97, 95% CI, 3.34-7.37, P<0.01). CONCLUSION In peripheral blood, the methylation of JAK2, STAT1, and high levels of MCSM are promising biomarkers for CRC risk.
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Affiliation(s)
- Jiesheng Rong
- Second Department of Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Rui Pu
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Hongru Sun
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Yupeng Liu
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Tian Tian
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Haoran Bi
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Tingting Xia
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Lei Zhang
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Yuanyuan Zhang
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Yashuang Zhao
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China.
| | - Lin Zhu
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China.
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Abbasi MA, Ghazanfari S, Sharifi SD, Ahmadi Gavlighi H. Effect of rosemary essential oil as nitrite substitute on quality of sausage produced using chicken fed by thymus essential oil and rapeseed oil. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2023; 60:856-867. [PMID: 36908364 PMCID: PMC9998795 DOI: 10.1007/s13197-020-04786-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/21/2020] [Accepted: 09/09/2020] [Indexed: 10/23/2022]
Abstract
The objective was to determine the effect of rosemary essential oil (REO) as nitrite substitute on the physicochemical, microbiological and sensory quality of sausage from broilers fed different levels of thymus essential oil (TEO) and rapeseed oil (RO). Broiler chicks fed TEO (0, 300 and 500 ppm) and RO (1, 3 and 5%) in a 3 × 3 factorial design. Sausages were made from meat of chicken fed TEO (0 and 500 ppm) treated with REO (120 ppm), REO:nitrite (60:60 ppm), nitrite (120 ppm) or without REO and nitrite in a 2 × 4 factorial design. Results showed that TEO increased water holding capacity and pH value and decreased malondialdehyde concentration. RO (1 and 3%) × TEO (500 ppm) group had higher unsaturated to saturated fatty acids ratio in the meat. Results showed that treatments of REO (120 ppm) decreased lipid oxidation and increased pH value of meat. Sausage produced by nitrite (120 ppm) or REO:nitrite (60:60 ppm) had lower total microbial count, lightness but higher redness and yellowness. Based on the results, TEO in chicken feed decreased lipid oxidation of sausages. Furthermore, substitution at least 60 ppm nitrite with REO had more preserving effect on quality of produced sausages.
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Affiliation(s)
- Mohammad Ali Abbasi
- Department of Animal and Poultry Sciences, Aburaihan Campus, University of Tehran, Pakdasht, Tehran 339163775 Iran
| | - Shokoufe Ghazanfari
- Department of Animal and Poultry Sciences, Aburaihan Campus, University of Tehran, Pakdasht, Tehran 339163775 Iran
| | - Seyed Davood Sharifi
- Department of Animal and Poultry Sciences, Aburaihan Campus, University of Tehran, Pakdasht, Tehran 339163775 Iran
| | - Hassan Ahmadi Gavlighi
- Department of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
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Selenium Supplementation and Prostate Health in a New Zealand Cohort. Nutrients 2019; 12:nu12010002. [PMID: 31861307 PMCID: PMC7019779 DOI: 10.3390/nu12010002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/12/2019] [Accepted: 12/17/2019] [Indexed: 01/23/2023] Open
Abstract
Background: There is variable reporting on the benefits of a 200 μg/d selenium supplementation towards reducing prostate cancer impacts. The current analysis is to understand whether stratified groups receive supplementation benefits on prostate health. Methods: 572 men were supplemented with 200 µg/d selenium as selinized yeast for six months, and 481 completed the protocol. Selenium and prostate-specific antigen (PSA) levels were measured in serum at pre- and post-supplementation. Changes in selenium and PSA levels subsequent to supplementation were assessed with and without demographic, lifestyle, genetic and dietary stratifications. Results: The post-supplementation selenium (p = 0.002) and the gain in selenium (p < 0.0001) by supplementation were significantly dependent on the baseline selenium level. Overall, there was no significant correlation between changes in PSA and changes in selenium levels by supplementation. However, stratified analyses showed a significant inverse correlation between changes in PSA and changes in selenium in men below the median age (p = 0.048), never-smokers (p = 0.031), men carrying the GPX1 rs1050450 T allele (CT, p = 0.022 and TT, p = 0.011), dietary intakes above the recommended daily intake (RDI) for zinc (p < 0.05), and below the RDI for vitamin B12 (p < 0.001). Conclusions: The current analysis shows the influence of life factors on prostate health benefits of supplemental selenium.
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Karunasinghe N, Zhu S, Ferguson LR. Benefits of Selenium Supplementation on Leukocyte DNA Integrity Interact with Dietary Micronutrients: A Short Communication. Nutrients 2016; 8:E249. [PMID: 27128937 PMCID: PMC4882662 DOI: 10.3390/nu8050249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 04/19/2016] [Accepted: 04/21/2016] [Indexed: 01/05/2023] Open
Abstract
A male cohort from New Zealand has previously shown variability in Selenium (Se) supplementation effects on measured biomarkers. The current analysis is to understand the reasons for variability of the H₂O₂-induced DNA damage recorded after Se supplementation. We have looked at the variation of demographic, lifestyle, medication, genetic and dietary factors and biomarkers measured at baseline and post-supplementation in these two extreme subgroups A and B. Group A showed increased H₂O₂-induced DNA damage and group B showed decreased damage after Se supplementation. We have also considered correlations of biomarkers and dietary factors in the complete dataset. The glutathione peroxidase (GPx) activity and DNA damage were significantly lower at post-supplementation in Group B compared to Group A. Post-supplementation, Group B showed a significant reduction in the GPx activity, while Group A showed a significant increase in DNA damage compared to baseline levels. Dietary methionine intake was significantly higher and folate intake was significantly lower in Group B compared to Group A. Se supplementation significantly increased the caspase-cleaved keratin 18 levels in both groups, indicating increased apoptotic potential of this supplement. Parameter correlation with the complete dataset showed dietary methionine to have a significant negative correlation with H₂O₂-induced DNA damage post-supplementation. The data suggest that Se supplementation is beneficial for the leukocyte DNA integrity only in interaction with the dietary methionine and folate intake.
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Affiliation(s)
- Nishi Karunasinghe
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Shuotun Zhu
- Discipline of Nutrition, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Lynnette R Ferguson
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
- Discipline of Nutrition, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
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Wang F, Yu L, Wang F, Liu L, Guo M, Gao D, Zhang Q, Li Y, Li L, Fu Q, Yu Z. Risk factors for breast cancer in women residing in urban and rural areas of eastern China. J Int Med Res 2015; 43:774-89. [PMID: 26475794 DOI: 10.1177/0300060515592901] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 06/03/2015] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE To investigate breast cancer risk factors in Chinese women residing in urban and rural areas of eastern China using a large-scale cross-sectional survey. METHODS In this multistage, stratified cluster sampling epidemiological survey, information on demographic characteristics, diet and lifestyle variables were gathered using a carefully designed questionnaire. Multivariate logistic regression analysis and subgroup analyses of the data were performed, including separate analyses of data from women residing in urban and rural areas. RESULTS A total of 122,058 women were included in the survey. Age, body mass index, number of miscarriages, family history of breast cancer and menopausal status were found to be risk factors for breast cancer, while the consumption of soya bean products was a protective factor. Among women residing in urban areas, high or moderate intake of soya bean products and red meat were protective factors. Among women residing in rural areas, obesity and a high intake of milk were identified as risk factors for breast cancer, while a moderate intake of soya bean products was a protective factor. CONCLUSIONS This type of data is crucial for understanding the risk factors for breast cancer and could facilitate the development and targeting of effective intervention strategies, with the ultimate aim of breast cancer prevention.
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Affiliation(s)
- Feng Wang
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
| | - LiXiang Yu
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
| | - Fei Wang
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
| | - LiYuan Liu
- Epidemiology Institute, School of Public Health, Shandong University, Jinan, Shandong, China
| | - MingMing Guo
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
| | - DeZong Gao
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
| | - Qiang Zhang
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
| | - YuYang Li
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
| | - Liang Li
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
| | - QinYe Fu
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
| | - ZhiGang Yu
- Department of Breast Diseases, Second Hospital of Shandong University, Jinan, Shandong, China
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Hughes LAE, Williamson EJ, van Engeland M, Jenkins MA, Giles GG, Hopper JL, Southey MC, Young JP, Buchanan DD, Walsh MD, van den Brandt PA, Alexandra Goldbohm R, Weijenberg MP, English DR. Body size and risk for colorectal cancers showing BRAF mutations or microsatellite instability: a pooled analysis. Int J Epidemiol 2012; 41:1060-72. [PMID: 22531127 DOI: 10.1093/ije/dys055] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND How body size influences risk of molecular subtypes of colorectal cancer (CRC) is unclear. We investigated whether measures of anthropometry differentially influence risk of tumours according to BRAF c.1799T>A p.V600E mutation (BRAF) and microsatellite instability (MSI) status. METHODS Data from The Netherlands Cohort Study (n = 120,852) and Melbourne Collaborative Cohort Study (n = 40,514) were pooled and included 734 and 717 colorectal cancer cases from each study, respectively. Hazard ratios (HRs) and 95% confidence intervals (CIs) for body mass index (BMI), waist measurement and height were calculated and compared for subtypes defined by BRAF mutation and MSI status, measured from archival tissue. RESULTS Results were consistent between studies. When pooled, BMI modelled in 5 kg/m(2) increments was positively associated with BRAF wild-type (HR: 1.16, 95% CI: 1.08-1.26) and MS-stable tumours (HR: 1.15, 95% CI: 1.06-1.24). Waist measurement was also associated with BRAF wild-type (highest vs lowest quartile, HR: 1.59, 95% CI: 1.33-1.90) and MS-stable tumours (highest vs lowest quartile HR: 1.68, 95% CI: 1.31-2.15). The HRs for BRAF mutation tumours and MSI tumours were smaller and non-significant, but differences between the HRs by tumour subtypes were not significant. Height, modelled per 5-cm increase, was positively associated with BRAF wild-type and BRAF mutation tumours, but the HR was greater for tumours with a BRAF mutation than BRAF wild-type (HR: 1.23, 95% CI: 1.11-1.37, P(heterogeneity) = 0.03). Similar associations were observed with respect to height and MSI tumours (HR: 1.26, 95% CI: 1.13-1.40, P(heterogeneity) = 0.02). CONCLUSIONS Generally, overweight increases the risk of CRC. Taller individuals have an increased risk of developing a tumour with a BRAF mutation or MSI.
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Affiliation(s)
- Laura A E Hughes
- Department of Epidemiology, GROW-School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
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Santoyo MM, Flores CR, Torres AL, Wrobel K, Wrobel K. Global DNA methylation in earthworms: a candidate biomarker of epigenetic risks related to the presence of metals/metalloids in terrestrial environments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2011; 159:2387-92. [PMID: 21782299 DOI: 10.1016/j.envpol.2011.06.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2011] [Revised: 06/28/2011] [Accepted: 06/30/2011] [Indexed: 05/13/2023]
Abstract
In this work, possible relationships between global DNA methylation and metal/metalloid concentrations in earthworms have been explored. Direct correlation was observed between soil and tissue As, Se, Sb, Zn, Cu, Mn, Ag, Co, Hg, Pb (p< 0.05). Speciation results obtained for As and Hg hint at the capability of earthworms for conversion of inorganic element forms present in soil to methylated species. Inverse correlation was observed between the percentage of methylated DNA cytosines and total tissue As, As + Hg, As + Hg + Se + Sb (β = -0.8456, p = 0.071; β = -0.9406, p = 0.017; β = -0.9526, p = 0.012 respectively), as well as inorganic As + Hg (β = -0.8807, p = 0.049). It was concluded that earthworms would be particularly helpful as bioindicators of elements undergoing in vivo methylation and might also be used to assess the related risk of epigenetic changes in DNA methylation.
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Affiliation(s)
- María Maldonado Santoyo
- Department of Chemistry, University of Guanajuato, L de Retana N° 5, 36000 Guanajuato, Mexico
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McKay JA, Williams EA, Mathers JC. Effect of maternal and post-weaning folate supply on gene-specific DNA methylation in the small intestine of weaning and adult apc and wild type mice. Front Genet 2011; 2:23. [PMID: 22303319 PMCID: PMC3268578 DOI: 10.3389/fgene.2011.00023] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2011] [Accepted: 05/11/2011] [Indexed: 12/12/2022] Open
Abstract
Increasing evidence supports the developmental origins of adult health and disease hypothesis which argues for a causal relationship between adverse early life nutrition and increased disease risk in adulthood. Modulation of epigenetic marks, e.g., DNA methylation and consequential altered gene expression, has been proposed as a mechanism mediating these effects. Via its role as a methyl donor, dietary folate supply may influence DNA methylation. As aberrant methylation is an early event in colorectal cancer (CRC) pathogenesis, we hypothesized low maternal and/or post-weaning folate intake may influence methylation of genes involved in CRC development. We investigated the effects of maternal folate depletion during pregnancy and lactation on selected gene methylation in the small intestine of wild type (WT) and Apc(+/Min) mice at weaning and as adults. We also investigated the effects of folate depletion post-weaning on gene methylation in adult mice. Female C57Bl6/J mice were fed low or normal folate diets from mating with Apc(+/Min) males to the end of lactation. A sub-set of offspring were killed at weaning. Remaining offspring were weaned on to low or normal folate diets, resulting in four treatment groups of Apc(+/Min) and WT mice. p53 was more methylated in weaning and adult WT compared with Apc(+/Min) mice (p > 0.001). Igf2 and Apc were hypermethylated in adult Apc(+/Min) compared with WT mice (p = 0.004 and 0.012 respectively). Low maternal folate reduced p53 methylation in adults (p = 0.04). Low post-weaning folate increased Apc methylation in Apc(+/Min) mice only (p = 0.008 for interaction). These observations demonstrate that folate depletion in early life can alter epigenetic marks in a gene-specific manner. Also, the differential effects of altered folate supply on DNA methylation in WT and Apc(+/Min) mice suggest that genotype may modulate epigenetic responses to environmental cues and may have implications for the development of personalized nutrition.
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Affiliation(s)
- Jill A McKay
- Human Nutrition Research Centre, Institute for Ageing and Health, Newcastle University Newcastle upon Tyne, UK
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Armstrong KM, Bermingham EN, Bassett SA, Treloar BP, Roy NC, Barnett MPG. Global DNA methylation measurement by HPLC using low amounts of DNA. Biotechnol J 2011; 6:113-7. [PMID: 21053336 DOI: 10.1002/biot.201000267] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Epigenetic changes in chromatin structure can influence gene expression without affecting the DNA sequence. The most commonly studied epigenetic modification, DNA methylation, has been implicated in normal tissue development and disease progression, and can be influenced by diet and other environmental factors. Current HPLC methods of determining DNA methylation may require relatively large amounts of DNA (50 μg); as many tissues have low DNA yields, this can be hard to achieve. We isolated DNA from mouse colon and liver in a study investigating post-natal supplementation with selenium and folic acid. After optimizing the methods to account for lower initial DNA amounts, we digested 3 μg of DNA to deoxynucleotide monophosphates, then purified and quantified it. Samples were analyzed by reversed-phase HPLC to determine global DNA methylation levels using commercial nucleotide standards. The HPLC column was cooled to 6(C (reducing run time), and detection was at 280 nm (UV). We showed that methylated cytosine can be accurately and reproducibly measured in as little as 3 μg of DNA using this HPLC analysis method (within-assay CV <2%). We also used this method to detect reduced DNA methylation in liver (P = 0.009) in response to post-natal supplementation with selenium and folate.
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Affiliation(s)
- Kelly M Armstrong
- Agri-Foods & Health, Food & Textiles Group, AgResearch Grasslands, Palmerston North, New Zealand
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Hughes LAE, Simons CCJM, van den Brandt PA, Goldbohm RA, de Goeij AF, de Bruïne AP, van Engeland M, Weijenberg MP. Body size, physical activity and risk of colorectal cancer with or without the CpG island methylator phenotype (CIMP). PLoS One 2011; 6:e18571. [PMID: 21483668 PMCID: PMC3071697 DOI: 10.1371/journal.pone.0018571] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 03/04/2011] [Indexed: 12/22/2022] Open
Abstract
Background We investigated how body size and physical activity influence the risk of the CpG island methylator phenotype (CIMP) in colorectal cancer (CRC). Methods In the Netherlands Cohort Study (n = 120,852), risk factors were self-reported at baseline in 1986. After 7.3 years of follow-up, 603 cases and 4,631 sub-cohort members were available. CIMP status according to the Weisenberger markers was determined using methylation specific PCR on DNA from paraffin embedded tumor tissue. Hazard rate ratios (HR) and 95% confidence intervals for CIMP (27.7%) and non-CIMP (72.3%) tumors were calculated according to BMI, BMI at age 20, BMI change, trouser/skirt size, height, and physical activity. Results BMI modeled per 5 kg/m2 increase was associated with both CIMP and non-CIMP tumors, however, HRs were attenuated when additionally adjusted for trouser/skirt size. Trouser/skirt size, per 2 size increase, was associated with both tumor subtypes, even after adjustment for BMI (CIMP HR: 1.20, 95%CI: 1.01–1.43; non-CIMP HR: 1.14, 95%CI: 1.04–1.28). Height per 5 cm was associated with both tumor sub-types, but HRs were attenuated when adjusted for body weight. BMI at age 20 was positively associated with increased risk of CIMP tumors and the association was significantly less pronounced for non-CIMP tumors (P-heterogeneity = 0.01). Physical activity was inversely associated with both subtypes, but a dose-response association was observed only for non-CIMP tumors (P-trend = 0.02). Conclusions Body size, especially central adiposity, may increase the risk of both CIMP and non-CIMP tumors. Body fat at young age may differentially influence risk. Physical activity appears to decrease the risk of CRC regardless of these molecular subtypes.
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Affiliation(s)
- Laura A E Hughes
- Department of Epidemiology, GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands.
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Folate depletion during pregnancy and lactation reduces genomic DNA methylation in murine adult offspring. GENES AND NUTRITION 2010; 6:189-96. [PMID: 21484149 DOI: 10.1007/s12263-010-0199-1] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Accepted: 11/30/2010] [Indexed: 10/18/2022]
Abstract
The developmental origins of adult health and disease (DOHaD) hypothesis that argues for a causal relationship between under-nutrition during early life and increased risk for a range of diseases in adulthood is gaining epidemiological support. One potential mechanism mediating these effects is the modulation of epigenetic markings, specifically DNA methylation. Since folate is an important methyl donor, alterations in supply of this micronutrient may influence the availability of methyl groups for DNA methylation. We hypothesised that low folate supply in utero and post-weaning would alter the DNA methylation profile of offspring. In two separate 2 × 2 factorial designed experiments, female C57Bl6/J mice were fed low- or control/high-folate diets during mating, and through pregnancy and lactation. Offspring were weaned on to either low- or control/high-folate diets, resulting in 4 treatment groups/experiment. Genomic DNA methylation was measured in the small intestine (SI) of 100-day-old offspring. In both experiments, SI genomic DNA from offspring of low-folate-fed dams was significantly hypomethylated compared with the corresponding control/high folate group (P = 0.009/P = 0.006, respectively). Post-weaning folate supply did not affect SI genomic DNA methylation significantly. These observations demonstrate that early life folate depletion affects epigenetic markings, that this effect is not modulated by post-weaning folate supply and that altered epigenetic marks persist into adulthood.
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Barnett M, Bermingham E, McNabb W, Bassett S, Armstrong K, Rounce J, Roy N. Investigating micronutrients and epigenetic mechanisms in relation to inflammatory bowel disease. Mutat Res 2010; 690:71-80. [PMID: 20188748 DOI: 10.1016/j.mrfmmm.2010.02.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Revised: 01/26/2010] [Accepted: 02/19/2010] [Indexed: 05/28/2023]
Abstract
Epigenomic regulation, via DNA methylation, histone modification and non-coding RNA, is increasingly recognised as having a key role in normal development and function of an organism, acting to control cellular and tissue growth and differentiation. It is also thought to be involved in many complex diseases now common in the Western world, including cardiovascular disease, type 2 diabetes, obesity and inflammatory bowel disease (IBD). There is a range of evidence to suggest that nutrition plays a vital role in the protection from such diseases. However, there is little information about the role of nutrition on the epigenetic regulation of IBD. This review aims to elucidate the interactions of nutrients and the epigenome in IBD. More specifically, the plasticity of epigenetic modifications that occur due to low selenium and folate levels in the diet during gestation and lactation will be discussed. A better understanding of this plasticity, and of nutrient-epigenome interactions, will have important implications for enhancing human health through foods.
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Affiliation(s)
- Matthew Barnett
- Food, Metabolism & Microbiology Section, AgResearch Grasslands, Tennent Drive, Palmerston North 4474, New Zealand.
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Hirner AV, Rettenmeier AW. Methylated Metal(loid) Species in Humans. ORGANOMETALLICS IN ENVIRONMENT AND TOXICOLOGY 2010. [DOI: 10.1039/9781849730822-00465] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
While the metal(loid)s arsenic, bismuth, and selenium (probably also tellurium) have been shown to be enzymatically methylated in the human body, this has not yet been demonstrated for antimony, cadmium, germanium, indium, lead, mercury, thallium, and tin, although the latter elements can be biomethylated in the environment. Methylated metal(loid)s exhibit increased mobility, thus leading to a more efficient metal(loid) transport within the body and, in particular, opening chances for passing membrane barriers (blood-brain barrier, placental barrier). As a consequence human health may be affected. In this review, relevant data from the literature are compiled, and are discussed with respect to the evaluation of assumed and proven health effects caused by alkylated metal(loid) species.
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Affiliation(s)
- Alfred V. Hirner
- Institute of Analytical Chemistry, University of Duisburg-Essen D-45117 Essen Germany
| | - Albert W. Rettenmeier
- Institute of Hygiene and Occupational Medicine, University of Duisburg-Essen D-45122 Essen Germany
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Hughes LAE, van den Brandt PA, de Bruïne AP, Wouters KAD, Hulsmans S, Spiertz A, Goldbohm RA, de Goeij AFPM, Herman JG, Weijenberg MP, van Engeland M. Early life exposure to famine and colorectal cancer risk: a role for epigenetic mechanisms. PLoS One 2009; 4:e7951. [PMID: 19956740 PMCID: PMC2776970 DOI: 10.1371/journal.pone.0007951] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Accepted: 10/29/2009] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Exposure to energy restriction during childhood and adolescence is associated with a lower risk of developing colorectal cancer (CRC). Epigenetic dysregulation during this critical period of growth and development may be a mechanism to explain such observations. Within the Netherlands Cohort Study on diet and cancer, we investigated the association between early life energy restriction and risk of subsequent CRC characterized by the (promoter) CpG island methylation phenotype (CIMP). METHODOLOGY/PRINCIPAL FINDINGS Information on diet and risk factors was collected by baseline questionnaire (n = 120,856). Three indicators of exposure were assessed: place of residence during the Hunger Winter (1944-45) and World War II years (1940-44), and father's employment status during the Economic Depression (1932-40). Methylation specific PCR (MSP) on DNA from paraffin embedded tumor tissue was performed to determine CIMP status according to the Weisenberger markers. After 7.3 years of follow-up, 603 cases and 4631 sub-cohort members were available for analysis. Cox regression was used to calculate hazard ratios (HR) and 95% confidence intervals for CIMP+ (27.7%) and CIMP- (72.3%) tumors according to the three time periods of energy restriction, adjusted for age and gender. Individuals exposed to severe famine during the Hunger Winter had a decreased risk of developing a tumor characterized by CIMP compared to those not exposed (HR 0.65, 95%CI: 0.45-0.92). Further categorizing individuals by an index of '0-1' '2-3' or '4-7' genes methylated in the promoter region suggested that exposure to the Hunger Winter was associated with the degree of promoter hypermethylation ('0-1 genes methylated' HR = 1.01, 95%CI:0.74-1.37; '2-3 genes methylated' HR = 0.83, 95% CI:0.61-1.15; '4-7 genes methylated' HR = 0.72, 95% CI:0.49-1.04). No associations were observed with respect to the Economic Depression and WWII years. CONCLUSIONS This is the first study indicating that exposure to a severe, transient environmental condition during adolescence and young adulthood may result in persistent epigenetic changes that later influence CRC development.
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Affiliation(s)
- Laura A. E. Hughes
- Department of Epidemiology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Piet A. van den Brandt
- Department of Epidemiology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Adriaan P. de Bruïne
- Department of Pathology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Kim A. D. Wouters
- Department of Pathology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Sarah Hulsmans
- Department of Pathology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Angela Spiertz
- Department of Prevention and Health, TNO Quality of Life, Leiden, The Netherlands
| | | | - Anton F. P. M. de Goeij
- Department of Pathology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - James G. Herman
- Sidney Kimmel Comprehensive Cancer Center, John Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Matty P. Weijenberg
- Department of Epidemiology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Manon van Engeland
- Department of Pathology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
- * E-mail:
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15
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Abstract
An increasing literature associates high intake of meat, especially red meat and processed meat with an increased risk of cancers, especially colorectal cancer. There is evidence that this risk may not be a function of meat per se, but may reflect high-fat intake, and/or carcinogens generated through various cooking and processing methods. The cancer risk may be modulated by certain genotypes. Cancers associated with high meat consumption may be reduced by the addition of anticarcinogens in the diet, especially at the same time as meat preparation or meat consumption, or modification of food preparation methods. Meat contains potential anticarcinogens, including omega-3 polyunsaturated fatty acids, and conjugated linoleic acid (CLA). Red meat, in particular, is an important source of micronutrients with anticancer properties, including selenium, vitamin B6 and B12, and vitamin D. Adjusting the balance between meat and other dietary components may be critical to protecting against potential cancer risks.
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Affiliation(s)
- Lynnette R Ferguson
- Discipline of Nutrition, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand.
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16
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Abstract
Selenium is an essential trace element that has been implicated in cancer risk; however, study results have been inconsistent with regard to colon cancer. Our objectives were to 1) investigate the association between selenium and colon cancer, 2) evaluate possible effect measure modifiers, and 3) evaluate potential biases associated with the use of postdiagnostic serum selenium measures. The North Carolina Colon Cancer Study is a large population-based, case-control study of colon cancer in North Carolina between 1996 and 2000 (n = 1,691). Nurses interviewed patients about diet and lifestyle and drew blood specimens, which were used to measure serum selenium. Individuals who had both high serum selenium (> 140 mcg/l) and high reported folate (> 354 mcg/day) had a reduced relative risk of colon cancer [odds ratio (OR) = 0.5, 95% confidence interval (CI) = 0.4-0.8). The risk of colon cancer for those with high selenium and low folate was approximately equal to the risk among those with low selenium and low folate (OR = 1.1, 95% CI = 0.7-1.5) as was the risk for those with low selenium and high folate (OR = 0.9, 95% CI = 0.7-1.2). We did not find evidence of bias due to weight loss, stage at diagnosis, or time from diagnosis to selenium measurement. High levels of serum selenium and reported folate jointly were associated with a substantially reduced risk of colon cancer. Folate status should be taken into account when evaluating the relation between selenium and colon cancer in future studies. Importantly, weight loss, stage at diagnosis, or time from diagnosis to blood draw did not appear to produce strong bias in our study.
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17
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Epigenetics: an important challenge for ICP-MS in metallomics studies. Anal Bioanal Chem 2008; 393:481-6. [DOI: 10.1007/s00216-008-2472-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2008] [Revised: 10/01/2008] [Accepted: 10/09/2008] [Indexed: 10/21/2022]
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18
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Abstract
Epidemiological evidence increasingly suggests that environmental exposures early in development have a role in susceptibility to disease in later life. In addition, some of these environmental effects seem to be passed on through subsequent generations. Epigenetic modifications provide a plausible link between the environment and alterations in gene expression that might lead to disease phenotypes. An increasing body of evidence from animal studies supports the role of environmental epigenetics in disease susceptibility. Furthermore, recent studies have demonstrated for the first time that heritable environmentally induced epigenetic modifications underlie reversible transgenerational alterations in phenotype. Methods are now becoming available to investigate the relevance of these phenomena to human disease.
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Affiliation(s)
- Randy L Jirtle
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710, USA.
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19
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N/A, 孙 丹, 房 静. N/A. Shijie Huaren Xiaohua Zazhi 2006; 14:1502-1506. [DOI: 10.11569/wcjd.v14.i15.1502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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20
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Yu Z, Tang Y, Hu D, Li J. Inhibitory effect of genistein on mouse colon cancer MC-26 cells involved TGF-beta1/Smad pathway. Biochem Biophys Res Commun 2005; 333:827-32. [PMID: 15963949 DOI: 10.1016/j.bbrc.2005.05.177] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2005] [Accepted: 05/25/2005] [Indexed: 12/19/2022]
Abstract
TGF-beta1/signaling has been shown to be associated with proapoptotic and antimitotic activities in epithelial tissues. Genistein, a major component of soybean isoflavone, has multiple functions resulting in anticancer proliferation. We herein showed that genistein dose-dependently increased TGF-beta1 mRNA expression in mouse colon cancer MC-26 cells. A mouse monoclonal anti-TGF-beta1 neutralizing antibody partially, but not completely, blocked the growth inhibition by genistein. By using adenoviral vector, we demonstrated that Smad7 overexpression attenuated genistein-induced growth inhibition and apoptosis as determined by MTT and apoptosis ELISA. Smad7 overexpression also inhibited upregulation of p21 and caspase-3 activity by geinistein. To further confirm inhibitory effect of genistein in MC-26 cells require TGF-beta1/Smad signaling, we employed Western blot and electrophoretic mobility shift assay to detect formation of Smad-DNA complexes and phosphorylation of Smad2 and Smad3, respectively. Data revealed that genistein induced an evident formation of Smad-DNA complexes and phosphorylation of Smad2 and Smad3, indicating increased TGF-beta1 signaling. Taken together, these findings first provided insights into possible molecular mechanisms of growth inhibition by genistein that required Smad signaling, which could aid in its evaluation for colon tumor prevention.
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Affiliation(s)
- Zengli Yu
- School of Public Health, Zhengzhou University, Zhengzhou 450052, China.
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21
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Abstract
Traditional views of nutritional carcinogenesis depend on the identification of exogenous carcinogens as major risk factors. As our understanding evolves, it is clear that the pattern of events involves not only exogenous carcinogens, but also metabolic processes and endogenous and exogenous anticarcinogens. The process is modulated by the immune system, and genetics plays a significant role. New monitoring methods provide much-needed tools for providing proof of involvement of various factors at the level of human populations.
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