The expression of 25-Dx is sexually dimorphic in the PRKO mouse
hypothalamus. Northern blots were used to examine the expression of
25-Dx in the hypothalamus of male and female PRKO mice.
(a) The expression of 25-Dx in the hypothalamus of
female PRKO (ko) mice is higher than in wild-type (wt) littermates. The
25-Dx probe hybridizes to a single 1.9-kb transcript in the mouse
hypothalamus (Top). The ethidium bromide-stained gels
demonstrate the equal loading of RNA across lanes for the Northern blot
(Middle) and the corresponding genotype of each animal,
as determined by PCR (Bottom). (b)
Quantitative analysis of Northern blots. Blots similar to the one shown
in a were prepared for male (+/+,
n = 3; +/−, n = 12; −/−,
n = 14) and female (+/+, n =
12; +/−, n = 13; −/−, n
= 14) PRKO mice and quantified by PhosphorImager analysis. *,
P < 0.05 (two-tailed), **,
P < 0.001 (two-tailed).