» Articles » PMID: 29475968

MiRNA-Processing Gene Methylation and Cancer Risk

Abstract

Dysregulation of miRNA and methylation levels are epigenetic hallmarks of cancer, potentially linked via miRNA-processing genes. Studies have found genetic alterations to miRNA-processing genes in cancer cells and human population studies. Our objective was to prospectively examine changes in DNA methylation of miRNA-processing genes and their associations with cancer risk. We examined cohort data from the Department of Veterans' Affairs Normative Aging Study. Participants were assessed every 3 to 5 years starting in 1999 through 2013 including questionnaires, medical record review, and blood collection. Blood from 686 consenting participants was analyzed using the Illumina 450K BeadChip array to measure methylation at CpG sites throughout the genome. We selected 19 genes based on a literature review, with 519 corresponding CpG sites. We then used Cox proportional hazards models to examine associations with cancer incidence, and generalized estimating equations to examine associations with cancer prevalence. Associations at false discovery rate < 0.05 were considered statistically significant. Methylation of three CpGs (: cg23230564, : cg06751583, and : cg21034183) was prospectively associated with time to cancer development (positively for cg06751583, inversely for cg23230564 and cg21034183), whereas methylation of one CpG site (: cg16131300) was positively associated with cancer prevalence. DNA methylation of , a key miRNA-processing gene, and may play a role in early carcinogenesis. Changes in miRNA processing may exert multiple effects on cancer development, including protecting against it via altered global miRNAs, and may be a useful early detection biomarker of cancer. .

Citing Articles

The role of DNA methylation and DNA methyltransferases (DNMTs) as potential biomarker and therapeutic target in non-small cell lung cancer (NSCLC).

Mohd Kamal K, Ghazali A, Ab Mutalib N, Abu N, Chua E, Masre S Heliyon. 2024; 10(19):e38663.

PMID: 39403460 PMC: 11472108. DOI: 10.1016/j.heliyon.2024.e38663.


Crosstalk between miRNAs and DNA Methylation in Cancer.

Saviana M, Le P, Micalo L, Del Valle-Morales D, Romano G, Acunzo M Genes (Basel). 2023; 14(5).

PMID: 37239435 PMC: 10217889. DOI: 10.3390/genes14051075.


MicroRNAs and long non-coding RNAs in cartilage homeostasis and osteoarthritis.

Gu J, Rao W, Huo S, Fan T, Qiu M, Zhu H Front Cell Dev Biol. 2022; 10:1092776.

PMID: 36582467 PMC: 9793335. DOI: 10.3389/fcell.2022.1092776.


Endothelin-3 is epigenetically silenced in endometrioid endometrial cancer.

Zmarzly N, Januszyk S, Mieszczanski P, Morawiec E, Buda P, Dziobek K J Cancer Res Clin Oncol. 2022; 149(9):5687-5696.

PMID: 36542159 PMC: 10356642. DOI: 10.1007/s00432-022-04525-w.


Stem-Cell Theory of Cancer: Implications for Antiaging and Anticancer Strategies.

Tu S, Pisters L Cancers (Basel). 2022; 14(5).

PMID: 35267646 PMC: 8909197. DOI: 10.3390/cancers14051338.


References
1.
Hansen K, Timp W, Corrada Bravo H, Sabunciyan S, Langmead B, McDonald O . Increased methylation variation in epigenetic domains across cancer types. Nat Genet. 2011; 43(8):768-75. PMC: 3145050. DOI: 10.1038/ng.865. View

2.
Rupp L, Brady B, Carpenter A, De Obaldia M, Bhandoola A, Bosselut R . The microRNA biogenesis machinery modulates lineage commitment during αβ T cell development. J Immunol. 2014; 193(8):4032-42. PMC: 4185242. DOI: 10.4049/jimmunol.1401359. View

3.
Catto J, Miah S, Owen H, Bryant H, Myers K, Dudziec E . Distinct microRNA alterations characterize high- and low-grade bladder cancer. Cancer Res. 2009; 69(21):8472-81. PMC: 2871298. DOI: 10.1158/0008-5472.CAN-09-0744. View

4.
Brennan K, Flanagan J . Is there a link between genome-wide hypomethylation in blood and cancer risk?. Cancer Prev Res (Phila). 2012; 5(12):1345-57. DOI: 10.1158/1940-6207.CAPR-12-0316. View

5.
Joshi A, Struhl K . Eaf3 chromodomain interaction with methylated H3-K36 links histone deacetylation to Pol II elongation. Mol Cell. 2005; 20(6):971-8. DOI: 10.1016/j.molcel.2005.11.021. View