PMID- 27498875 OWN - NLM STAT- MEDLINE DCOM- 20171113 LR - 20171113 IS - 2211-1247 (Electronic) VI - 16 IP - 7 DP - 2016 Aug 16 TI - Distinct Roles of PKCiota/lambda and PKMzeta in the Initiation and Maintenance of Hippocampal Long-Term Potentiation and Memory. PG - 1954-61 LID - S2211-1247(16)30948-2 [pii] LID - 10.1016/j.celrep.2016.07.030 [doi] AB - PKMzeta has been proposed to be essential for maintenance of long-term potentiation (LTP) and long-term memory (LTM). However, recent data from PKMzeta-knockout mice has called this role into question. Instead, the other atypical isoform, protein kinase C iota/lambda (PKCiota/lambda), has emerged as a potential alternative player. Therefore, the nature of the "memory molecule" maintaining learned information remains uncertain. Here, we report knockdown (KD) of PKCiota/lambda and PKMzeta in the dorsal hippocampus and find deficits in early expression and late maintenance, respectively, during both LTP and hippocampus-dependent LTM. Sequential increases in the active form of PKCiota/lambda and PKMzeta are detected during LTP or fear conditioning. Importantly, PKMzeta, but not PKCiota/lambda, KD disrupts previously established LTM. Thus, PKCiota/lambda and PKMzeta have distinct functions in LTP and memory, with PKMzeta playing a specific role in memory maintenance. This relaying pattern may represent a precise molecular mechanism by which atypical PKCs regulate the different stages of memory. CI - Copyright (c) 2016 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Wang, Shaoli AU - Wang S AD - The Key Laboratory of Developmental Genes and Human Disease, Institute of Life Sciences, Southeast University, Nanjing, Jiangsu Province 210096, China; Department of Neurobiology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China. FAU - Sheng, Tao AU - Sheng T AD - The Key Laboratory of Developmental Genes and Human Disease, Institute of Life Sciences, Southeast University, Nanjing, Jiangsu Province 210096, China; Department of Neurobiology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China. FAU - Ren, Siqiang AU - Ren S AD - Department of Neurobiology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China. FAU - Tian, Tian AU - Tian T AD - Department of Neurobiology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China. FAU - Lu, Wei AU - Lu W AD - The Key Laboratory of Developmental Genes and Human Disease, Institute of Life Sciences, Southeast University, Nanjing, Jiangsu Province 210096, China; Department of Neurobiology, Nanjing Medical University, Nanjing, Jiangsu Province 210029, China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001, China. Electronic address: luwei@seu.edu.cn. LA - eng PT - Journal Article DEP - 20160804 PL - United States TA - Cell Rep JT - Cell reports JID - 101573691 RN - 0 (Isoenzymes) RN - 0 (Molecular Chaperones) RN - 0 (Prkcz protein, rat) RN - 0 (RNA, Small Interfering) RN - 0 (enhanced green fluorescent protein) RN - 147336-22-9 (Green Fluorescent Proteins) RN - EC 2.7.11.13 (Protein Kinase C) RN - EC 2.7.11.13 (protein kinase C lambda) SB - IM MH - Animals MH - Fear/physiology MH - Gene Expression Regulation MH - Genes, Reporter MH - Green Fluorescent Proteins/genetics/metabolism MH - Hippocampus/anatomy & histology/*physiology MH - Isoenzymes/antagonists & inhibitors/*genetics/metabolism MH - Long-Term Potentiation/*genetics MH - Male MH - Memory, Long-Term/*physiology MH - Memory, Short-Term/*physiology MH - Microtomy MH - Molecular Chaperones/antagonists & inhibitors/*genetics/metabolism MH - Protein Kinase C/antagonists & inhibitors/*genetics/metabolism MH - RNA, Small Interfering/genetics/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Time Factors MH - Tissue Culture Techniques EDAT- 2016/08/09 06:00 MHDA- 2017/11/14 06:00 CRDT- 2016/08/09 06:00 PHST- 2016/05/04 00:00 [received] PHST- 2016/06/21 00:00 [revised] PHST- 2016/07/12 00:00 [accepted] PHST- 2016/08/09 06:00 [entrez] PHST- 2016/08/09 06:00 [pubmed] PHST- 2017/11/14 06:00 [medline] AID - S2211-1247(16)30948-2 [pii] AID - 10.1016/j.celrep.2016.07.030 [doi] PST - ppublish SO - Cell Rep. 2016 Aug 16;16(7):1954-61. doi: 10.1016/j.celrep.2016.07.030. Epub 2016 Aug 4.