1. Methylation Analysis of MIR200 Family in Mexican Patients with Colorectal Cancer
- Author
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Melva Gutiérrez-Angulo, Jorge Peregrina-Sandoval, Jose Miguel Moreno-Ortiz, Helen Haydee Fernanda Ramírez-Plascencia, María de la Luz Ayala-Madrigal, Jesús Alonso Valenzuela-Pérez, Carlos Rogelio Alvizo-Rodríguez, José Alfonso Cruz-Ramos, Nelly Margarita Macías-Gómez, Jesús Arturo Hernández-Sandoval, and Christian Octavio Gonzalez-Villaseñor
- Subjects
Adult ,Male ,0301 basic medicine ,Colorectal cancer ,medicine.disease_cause ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,medicine ,Humans ,Allele ,Mexico ,Polyacrylamide gel electrophoresis ,Original Research ,Aged ,business.industry ,DNA ,General Medicine ,Methylation ,colorectal neoplasms ,DNA Methylation ,Middle Aged ,medicine.disease ,DNA extraction ,Molecular biology ,Bisulfite ,MicroRNAs ,030104 developmental biology ,chemistry ,biomedical research ,030220 oncology & carcinogenesis ,Female ,Carcinogenesis ,business ,carcinogenesis - Abstract
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
- Published
- 2020