Figure 4. G9a Repression in NAc Promotes Susceptibility to Stress.
(A) Time-course of Cre-mediated G9a knockdown in NAc and subsequent sub-maximal (8 days) social defeat stress. (B) Immunohistochemical and (C) western blot validation of G9a knockdown in NAc using HSV-Cre-GFP viruses in G9afl/fl mice. (D) G9a repression in NAc enhances social avoidance in a social interaction test. (E) G9a depletion in NAc promotes anhedonia as measured by sucrose preference. * indicates a significant difference from control condition (defeated mice infected with GFP), p<0.05. Data are presented as average ± SEM, n = 6–7/group. (E) G9a knockdown does not affect locomotor activity in an open field.