» Articles » PMID: 29547900

DNA Methylome and Transcriptome Alterations and Cancer Prevention by Curcumin in Colitis-accelerated Colon Cancer in Mice

Overview
Journal Carcinogenesis
Specialty Oncology
Date 2018 Mar 17
PMID 29547900
Citations 54
Authors
Affiliations
Soon will be listed here.
Abstract

Inflammation is highly associated with colon carcinogenesis. Epigenetic mechanisms could play an important role in the initiation and progression of colon cancer. Curcumin, a dietary phytochemical, shows promising effects in suppressing colitis-associated colon cancer in azoxymethane-dextran sulfate sodium (AOM-DSS) mice. However, the potential epigenetic mechanisms of curcumin in colon cancer remain unknown. In this study, the anticancer effect of curcumin in suppressing colon cancer in an 18-week AOM-DSS colon cancer mouse model was confirmed. We identified lists of differentially expressed and differentially methylated genes in pairwise comparisons and several pathways involved in the potential anticancer effect of curcumin. These pathways include LPS/IL-1-mediated inhibition of RXR function, Nrf2-mediated oxidative stress response, production of NO and ROS in macrophages and IL-6 signaling. Among these genes, Tnf stood out with decreased DNA CpG methylation of Tnf in the AOM-DSS group and reversal of the AOM-DSS induced Tnf demethylation by curcumin. These observations in Tnf methylation correlated with increased and decreased Tnf expression in RNA-seq. The functional role of DNA methylation of Tnf was further confirmed by in vitro luciferase transcriptional activity assay. In addition, the DNA methylation level in a group of inflammatory genes was decreased in the AOM+DSS group but restored by curcumin and was validated by pyrosequencing. This study shows for the first time epigenomic changes in DNA CpG methylation in the inflammatory response from colitis-associated colon cancer and the reversal of their CpG methylation changes by curcumin. Future clinical epigenetic studies with curcumin in inflammation-associated colon cancer would be warranted.

Citing Articles

Enzymatic TET-1 inhibition highlights different epigenetic behaviours of IL-1β and TNFα in tumour progression of OS cell lines.

Bellavia D, Caruccio S, Caradonna F, Costa V, Urzi O, Raimondi L Clin Epigenetics. 2024; 16(1):136.

PMID: 39358792 PMC: 11448002. DOI: 10.1186/s13148-024-01745-4.


Epigenetics of Dietary Phytochemicals in Cancer Prevention: Fact or Fiction.

Chou P, Peter R, Shannar A, Pan Y, Dave P, Xu J Cancer J. 2024; 30(5):320-328.

PMID: 39312452 PMC: 11573353. DOI: 10.1097/PPO.0000000000000742.


Expression of Anoikis-Related Genes and Potential Biomarkers in Colon Cancer Based on RNA-seq and scRNA-seq.

Guo T, Wang Y Appl Biochem Biotechnol. 2024; 196(11):8282-8305.

PMID: 38727936 DOI: 10.1007/s12010-024-04957-9.


Nanomaterials modulate tumor-associated macrophages for the treatment of digestive system tumors.

Li H, Wang S, Yang Z, Meng X, Niu M Bioact Mater. 2024; 36:376-412.

PMID: 38544737 PMC: 10965438. DOI: 10.1016/j.bioactmat.2024.03.003.


Molecular Mechanism of Natural Food Antioxidants to Regulate ROS in Treating Cancer: A Review.

Muchtaridi M, Az-Zahra F, Wongso H, Setyawati L, Novitasari D, Ikram E Antioxidants (Basel). 2024; 13(2).

PMID: 38397805 PMC: 10885946. DOI: 10.3390/antiox13020207.


References
1.
Guo Y, Liu Y, Zhang C, Su Z, Li W, Huang M . The epigenetic effects of aspirin: the modification of histone H3 lysine 27 acetylation in the prevention of colon carcinogenesis in azoxymethane- and dextran sulfate sodium-treated CF-1 mice. Carcinogenesis. 2016; 37(6):616-624. PMC: 5006120. DOI: 10.1093/carcin/bgw042. View

2.
Im H, Kim H, Lee J, Kim H, Cho J, Jo I . A Preclinical Model of Chronic Alcohol Consumption Reveals Increased Metastatic Seeding of Colon Cancer Cells in the Liver. Cancer Res. 2016; 76(7):1698-704. DOI: 10.1158/0008-5472.CAN-15-2114. View

3.
Wu T, Khor T, Saw C, Loh S, Chen A, Lim S . Anti-inflammatory/Anti-oxidative stress activities and differential regulation of Nrf2-mediated genes by non-polar fractions of tea Chrysanthemum zawadskii and licorice Glycyrrhiza uralensis. AAPS J. 2010; 13(1):1-13. PMC: 3032091. DOI: 10.1208/s12248-010-9239-4. View

4.
Katsurano M, Niwa T, Yasui Y, Shigematsu Y, Yamashita S, Takeshima H . Early-stage formation of an epigenetic field defect in a mouse colitis model, and non-essential roles of T- and B-cells in DNA methylation induction. Oncogene. 2011; 31(3):342-51. DOI: 10.1038/onc.2011.241. View

5.
Parrish R, Day J, Lubin F . Direct bisulfite sequencing for examination of DNA methylation with gene and nucleotide resolution from brain tissues. Curr Protoc Neurosci. 2012; Chapter 7:Unit 7.24. PMC: 3395468. DOI: 10.1002/0471142301.ns0724s60. View