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[Promoter methylation and mRNA expression of APC gene in MCF10 breast cancer model].
- Source :
-
Zhonghua bing li xue za zhi = Chinese journal of pathology [Zhonghua Bing Li Xue Za Zhi] 2006 Jan; Vol. 35 (1), pp. 32-6. - Publication Year :
- 2006
-
Abstract
- Objective: To investigate the promoter methylation status and mRNA expression of APC gene in MCF10 model of breast cancer progression.<br />Methods: Methylation specific PCR and sodium bisufite genomic sequencing were employed to detect the methylation status of APC promoter 1A in normal breast tissues, conventional breast cancer cell line MCF-7 and MCF10 model cell lines including MCF10A (breast hyperplastic cell line, non-tumorigenic), MCF10AT (pre-malignant cell lines, producing slowly progressing hyperplastic and dysplastic lesions), MCF10DCIS.com (breast ductal carcinoma in-situ cell line, producing ductal carcinoma in-situ), MCF10CA1a, MCF10CA1d, MCF10CA1h cell lines (invasive breast carcinoma cell line, forming aggressive tumors of different morphology and metastatic potential). In addition, mRNA expression of APC was determined by reverse transcriptase PCR and real-time PCR assays.<br />Results: Hypomethylation of APC promoter 1A was identified in hyperplastic cell line MCF10A, pre-malignant cell line MCF10AT, ductal carcinoma in-situ cell line MCF10DCIS.com, invasive carcinoma cell lines MCF10CA1a, MCF10CA1d, MCF10CA1h and normal breast tissue. MCF-7 showed partial methylation at the promoter. Statistically significant reduction of APC mRNA expression was not found in all MCF10 cell lines and MCF-7, compared with that of normal breast tissue (MCF10AT, MCF10CA1a, MCF10CA1d, MCF10CA1h and MCF10DCIS.com showed reduced mRNA expressions of APC at 0.27, 0.96, 1.78, 2.70, and 2.03 times respectively. MCF10A and MCF-7 even showed an increase of APC mRNA expression at 0.02 and 0.33 times, respectively).<br />Conclusion: The aberrant promoter methylation of APC is not related to the breast cancer progression, at least in the MCF10 model system.
- Subjects :
- Adenomatous Polyposis Coli Protein biosynthesis
Breast pathology
Breast Neoplasms genetics
Breast Neoplasms pathology
Cell Line, Tumor
Female
Gene Expression Regulation, Neoplastic
Genes, APC
Humans
Hyperplasia genetics
Hyperplasia metabolism
Hyperplasia pathology
Precancerous Conditions genetics
Precancerous Conditions pathology
RNA, Messenger biosynthesis
RNA, Messenger genetics
Adenomatous Polyposis Coli Protein genetics
Breast Neoplasms metabolism
DNA Methylation
Precancerous Conditions metabolism
Promoter Regions, Genetic genetics
Subjects
Details
- Language :
- Chinese
- ISSN :
- 0529-5807
- Volume :
- 35
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Zhonghua bing li xue za zhi = Chinese journal of pathology
- Publication Type :
- Academic Journal
- Accession number :
- 16608647