Intra-amygdala infusion of the protein kinase Mzeta inhibitor ZIP disrupts foreground context fear memory. Neurobiol Learn Mem 2012 Sep;98(2):148-53
Date
06/05/2012Pubmed ID
22659643Pubmed Central ID
PMC3424353DOI
10.1016/j.nlm.2012.05.003Scopus ID
2-s2.0-84865282197 (requires institutional sign-in at Scopus site) 34 CitationsAbstract
Protein kinase Mzeta has been the subject of much recent interest, as it is the only molecule currently identified to maintain memory. Despite the wealth of studies investigating PKMζ in memory, questions remain about which types of memory PKMζ supports. Further, it is unclear how long the inhibitor of PKMz, ζ-pseudosubstrate inhibitory peptide (ZIP) remains in the brain after infusion. Here, we demonstrate that foreground context fear memory requires PKMζ activity in the amygdala. We also show that ZIP is fully cleared from the brain by 24h after infusion. These data contribute to a growing body of literature that demonstrates that PKMζ plays a key role in maintaining amygdala-dependent memory and provides new information about the degradation timecourse of the most commonly used inhibitor of PKMζ, ZIP.
Author List
Kwapis JL, Jarome TJ, Gilmartin MR, Helmstetter FJAuthor
Fred Helmstetter PhD Professor in the Psychology / Neuroscience department at University of Wisconsin - MilwaukeeMESH terms used to index this publication - Major topics in bold
AmygdalaAnimals
Association Learning
Cell-Penetrating Peptides
Fear
Lipopeptides
Male
Memory
Protein Kinase C
Rats
Rats, Long-Evans
Time Factors
