Global analysis of DNA methylation changes during experimented lingual carcinogenesis.
Hua Xi Kou Qiang Yi Xue Za Zhi
; 42(3): 319-328, 2024 Jun 01.
Article
de En, Zh
| MEDLINE
| ID: mdl-39049651
ABSTRACT
OBJECTIVES:
This study aims to assess the role of DNA methylation changes in tongue cancer through a comprehensive analysis of global DNA methylation alterations during experimental lingual carcinogenesis.METHODS:
C57BL/6J mice were subjected to 16-week oral administration of 4-nitroquinoline-1-oxide (4NQO, 50 mg/L). Lingual mucosa samples, being representative of normal tissue (week 0) and early (week 12) and advanced (week 28) tumorigenesis, were harvested for microarray and methylated DNA immunoprecipitation sequencing (MeDIP-Seq). The mRNA and promoter methylation of transforming growth factor-beta-signaling protein 1 (SMAD1) were evaluated with real-time quantitative reverse transcription polymerase chain reaction and Massarray in human lingual mucosa and tongue cancer cell lines.RESULTS:
The cytosine guanine island (CGI) methylation level observed at 28 weeks surpassed that of both 12 weeks and 0 weeks. The promoter methylation level at 12 weeks exceeded that at 0 weeks. Notably, 208 differentially expressed genes were negatively correlated to differential methylation in promoters among 0, 12, and 28 weeks. The mRNA of SMAD1 was upregulated, concurrent with a decrease in promoter methylation levels in cell lines compared to normal mucosa.CONCLUSIONS:
DNA methylation changed during lingual carcinogenesis. Overexpression of SMAD1 was correlated to promoter hypomethylation in tongue cancer cell lines.Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Tumeurs de la langue
/
Régions promotrices (génétique)
/
Méthylation de l'ADN
/
Carcinogenèse
/
Souris de lignée C57BL
Limites:
Animals
/
Humans
Langue:
En
/
Zh
Journal:
Hua Xi Kou Qiang Yi Xue Za Zhi
/
Hua xi kou qiang yi xue za zhi
Sujet du journal:
ODONTOLOGIA
Année:
2024
Type de document:
Article
Pays d'affiliation:
Chine
Pays de publication:
Chine