Methylation analysis of MIR200 family in Mexican patients with colorectal cancer.
J Investig Med
; 68(3): 782-785, 2020 03.
Article
en En
| MEDLINE
| ID: mdl-31874934
The present study aimed to analyze the methylation pattern of the MIR200 family in the colorectal tissues and peripheral blood of colorectal cancer (CRC) patients. Previous informed consent, 102 samples of colorectal tissues (tumor and adjacent normal tissues) and 40 peripheral blood samples were collected from CRC patients. Additionally, we included a reference group of 40 blood samples. DNA extraction was done for colorectal tissues and peripheral blood. For methylation-specific PCR, we used bisulfite-treated DNA and controls for methylated and unmethylated DNA were included to each assay. PCR fragments were separated by 6% polyacrylamide gel electrophoresis. Methylation-positive and methylation-negative results were confirmed by bisulfite genomic sequencing technique. We analyzed 102 colorectal tissues and 40 blood samples from 51 CRC patients. MIR200B/MIR200A/MIR429 methylation analysis discloses no differences among tissues (p>0.05). However, MIR200C/MIR141 methylation showed differences between colorectal tissues and peripheral blood of CRC patients (p<0.0001) and mainly methylated alleles were observed in peripheral blood. These findings suggest a tissue-specific methylation pattern for the MIR200C/MIR141 promoter.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias Colorrectales
/
Metilación de ADN
/
MicroARNs
Límite:
Adult
/
Aged
/
Female
/
Humans
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Male
/
Middle aged
País/Región como asunto:
Mexico
Idioma:
En
Revista:
J Investig Med
Asunto de la revista:
MEDICINA
Año:
2020
Tipo del documento:
Article
País de afiliación:
México
Pais de publicación:
Reino Unido