The invention belongs to the technical field of
animal model construction, and relates to a construction method and application of an arrhythmic
cardiomyopathy zebrafish model. An sgRNA targeting
exon 2 of a
zebrafish brd4
gene is designed, a mixture of sgRNA and Cas9
protein is used to mutate the brd4
gene of a wild-type
zebrafish fertilized egg, the obtained F0 generation zebrafish is mated with a wild-type zebrafish, and positive heterozygous F1 generation zebrafish are screened out from the born zebrafish, which is an arrhythmic
cardiomyopathy zebrafish model; through
cardiac pathology, cardiac function detection,
heart rate and swimming test indicators, it is confirmed that the brd4 heterozygous
mutant zebrafish can develop arrhythmic
cardiomyopathy. The model construction method is simple, efficient and has a high success rate, and provides great help and convenience for evaluating or screening
drug research for treating arrhythmic cardiomyopathy.