2026-05-22T02:12:54Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/178112024-11-28T14:54:57Zcom_20.500.12105_15322com_20.500.12105_2051col_20.500.12105_16927col_20.500.12105_16966

00925njm 22002777a 4500 dc Castellano-Castillo, Daniel author Morcillo, Sonsoles author Crujeiras, Ana B. author Sánchez-Alcoholado, Lidia author Clemente-Postigo, Mercedes author Torres, Esperanza author Tinahones, Francisco José author Macias-Gonzalez, Manuel author 2019-01-21 Background: Visceral adipose tissue (VAT) has been identified as the essential fat depot for pathogenetic theories that associateobesity and colon cancer. LINE-1 hypomethylation has been mostly detected in tumor colon tissue, but less is known about the epigenetic pattern in surrounding tissues. The aim was to analyze for the first time the potential relationship between serum vitamin D, obesity and global methylation (LINE-1) in the visceral adipose tissue (VAT) from patients with and without colorectal cancer. Methods: A total of 55 patients with colorectal cancer and 35 control subjects participated in the study. LINE-1 DNA methylation in VAT was measured by pyrosequencing. Serum 25(OH)D levels were determined by ELISA. Results: Cancer patients had lower levels of LINE-1 methylation in VAT compared with the control group. In the subjects with colorectal cancer, LINE-1 DNA methylation levels were associated positively with vitamin D levels (r = 0,463; p < 0.001) and negatively with BMI (r = − 0.334, p = 0.01) and HOMA insulin resistance index (r = − 0.348, p = 0.01). Serum vitamin D was the main variable explaining the LINE-1% variance in the cancer group (β = 0.460, p < 0.001). In a multivariate analysis, subjects with higher LINE-1 methylation values had lower risk of developing colorectal cancer (OR = 0.53; IC95% =0.28–0.99) compared with the control group. Conclusions: We showed for the first time an association between LINE-1 DNA methylation in VAT and vitamin D levels in subjects with colorectal cancer, highlighting the importance of VAT from cancer patients, which could be modified epigenetically compared to healthy subjects. 10.1186/s12885-018-5226-4 1471-2407 BMC Cancer http://hdl.handle.net/10668/3182 30665376 http://hdl.handle.net/20.500.12105/17811 Colorectal cancer Global DNA methylation Obesity Epigenetic Vitamin D Neoplasias colorrectales Metilación de ADN Obesidad Epigénesis genética Epigenómica Vitamina D Association between serum 25-hydroxyvitamin D and global DNA methylation in visceral adipose tissue from colorectal cancer patients