[Construction of special reporter to detect DNA methylation regulatory activity in FCER1G gene promoter through patch-methylation]

To construct a special luciferase reporter to detect DNA methylation regulatory activity in FCER1G gene promoter regulatory element.We constructed special full and mock methylated FCER1G gene promoter regulatory luciferase reporters by patch-methylation, and detected DNA methylation regulatory activity by comparing the luciferase activity of full-methylated luciferase reporters with mock-methylated reporters.We successfully constructed the full and mock methylated FCER1G gene promoter regulatory luciferase reporters. The ratio of luciferase activity between the full methylated and the mock methylated was (0.36±0.07):1 (P0.001).FCER1G promoter activity is methylation-sensitive and is regulated by DNA methylation.