Figure 3.
Methylation status of the SNURF/SNURPN IC involved in the regulation of paternal imprints in the Prader-Willi syndrome region in rPESC lines. (A): Southern blot analysis. The larger (upper) band corresponds to a 5.7-kilobase (kb) uncut Methyl fragment, and the smaller (lower) band corresponds to the 4.66-kb digested Unmethyl fragment. (B): Bisulfite sequencing demonstrating that oocyte-derived rPESC lines were heavily Methyl, as expected, whereas all sequenced clones of mature sperm were completely Unmethyl. In biparental ORMES-22 and muscle DNA, both Unmethyl and Methyl clones were observed. Abbreviations: Methyl, methylated; ORMES, Oregon Rhesus Monkey Embryonic Stem; rPESC, rhesus parthenogenetic embryonic stem cell; Unmethyl, unmethylated.