Reduced Representation Bisulfite Sequencing from HD knock-in mouse model

We generated two types of DNA methylation datasets (Reduced Representation Bisulfite Sequencing [RRBS] and custom methylation array) from a heterozygous HD knock-in mouse model. The heterozygous Htt knock-in line expressed one wildtype endogenous Htt allele and a second Htt allele with knock-in of human mHTT exon 1 with either approximately 190 CAG repeats (Q175) or 20 CAG repeats (Q20). For each genotype (Q175 and Q20) we analyzed two brain regions (striatum and cerebellum) from 8 mice each on the RRBS platform (N=32 RRBS samples). Our EWAS of mutant Htt gene status (i.e. Q175 status) across the two brain regions identified two genome-wide significant CpGs in Htt region. contributor: CHDI foundation Examine DNA methylation differentiation between Htt KI mouse lines Q175 and Q20 mice in cerebellum and striatum brain regions.