SETD7 Primes Stressed Mice for Adult Social Avoidance, Cut to 33% by Knockdown
Updated
Updated · Earth.com · Aug 7
SETD7 Primes Stressed Mice for Adult Social Avoidance, Cut to 33% by Knockdown
3 articles · Updated · Earth.com · Aug 7
Summary
85% of early-stressed mice given a control virus avoided other mice after adult stress, versus 33% when researchers knocked down Setd7 in the midbrain.
SETD7 rose in dopamine neurons by day 21 after pups were separated from their mothers for 3 to 4 hours a day over 8 days, and three-quarters of altered histone tags made DNA easier to open.
Adding extra Setd7 to unstressed young mice raised the H3K4me1 tag 34% without changing baseline firing or behavior, but after adult stress half showed social avoidance versus 8.3% of controls.
The work points to SETD7 as a molecular link between early-life stress and later vulnerability in the ventral tegmental area, though the gene-therapy approach is not ready for humans and the key target genes remain unknown.