Liu JX, Zhang F, Zhou P, Xia TY, Mao GP. Protein expression and gene mutation of Brg1 in Peutz-Jeghers syndrome.
Shijie Huaren Xiaohua Zazhi 2012;
20:2353-2357. [DOI:
10.11569/wcjd.v20.i25.2353]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the protein expression and gene mutation of Brahma-related gene 1 (Brg1) in Peutz-Jeghers syndrome (PJS), and to analyze their relation with tumor development.
METHODS: The expression of Brg1 protein in 72 cases of PJS polyps was detected by immunohistochemistry. Mutations in exons 4 and 10 of the Brg1 gene was detected by means of polymerase chain reaction-direct sequencing (PCR-DNA) in 39 cases of PJS polyps and 2 cases of carcinoma.
RESULTS: The positive rate of Brg1 protein expression in PJS (54.17%) was lower than that in adenocarcinoma (76.67%) but higher than that in normal tissue (16.67%). There was a significant difference in the positive rate of Brg1 protein expression among the three groups (P < 0.05). No Brg1 gene mutations were detected in 39 cases of PJS polyps and 2 cases of carcinoma.
CONCLUSION: Increased expression of Brg1 protein in PJS may be associated with the development of this disease. Brg1 gene mutations might be rare in PJS. Brg1 expression can be used as an important parameter for differentiating malignancy and evaluating prognosis of PJS.
Collapse