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Navarro-Lobato I, Masmudi-Martín M, Quiros-Ortega ME, Gaona-Romero C, Carretero-Rey M, Rey Blanes C, Khan ZU. 14-3-3ζ is crucial for the conversion of labile short-term object recognition memory into stable long-term memory. J Neurosci Res 2021; 99:2305-2317. [PMID: 34115908 DOI: 10.1002/jnr.24894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/05/2021] [Accepted: 05/12/2021] [Indexed: 11/07/2022]
Abstract
The consolidation of new memories into long-lasting memories is multistage process characterized by distinct temporal dynamics. However, our understanding on the initial stage of transformation of labile memory of recent experience into stable memory remains elusive. Here, with the use of rats and mice overexpressing a memory enhancer called regulator of G protein signaling 14 of 414 amino acids (RGS14414 ) as a tool, we show that the expression of RGS14414 in male rats' perirhinal cortex (PRh), which is a brain area crucial for object recognition memory (ORM), enhanced the ORM to the extent that it caused the conversion of labile short-term ORM (ST-ORM) expected to last for 40 min into stable long-term ORM (LT-ORM) traceable after a delay of 24 hr, and that the temporal window of 40 to 60 min after object exposure not only was key for this conversion but also was the time frame when a surge in 14-3-3ζ protein was observed. A knockdown of 14-3-3ζ gene abrogated both the increase in 14-3-3ζ protein and the formation of LT-ORM. Furthermore, this 14-3-3ζ upregulation increased brain-derived growth factor (BDNF) levels in the time frame of 60 min and 24 hr and 14-3-3ζ knockdown decreased the BDNF levels, and a deletion of BDNF gene produced loss in mice ability to form LT-ORM. Thus, within 60 min of object exposure, 14-3-3ζ facilitated the conversion of labile ORM into stable ORM, whereas beyond the 60 min, it mediated the consolidation of the stable memory into long-lasting ORM by regulating BDNF signaling.
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Affiliation(s)
- Irene Navarro-Lobato
- Laboratory of Neurobiology, CIMES, University of Malaga, Malaga, Spain
- Department of Medicine, Faculty of Medicine, University of Malaga, Malaga, Spain
- Donders Institute for Brain Cognition and Behaviour, Radboud University, Heyendaalseweg 135, Nijmegen, 6525AJ, The Netherlands
| | - Mariam Masmudi-Martín
- Laboratory of Neurobiology, CIMES, University of Malaga, Malaga, Spain
- Department of Medicine, Faculty of Medicine, University of Malaga, Malaga, Spain
- Brain Metastasis Group, National Cancer Research Centre (CNIO), Madrid, 28029, Spain
| | - Maria E Quiros-Ortega
- Laboratory of Neurobiology, CIMES, University of Malaga, Malaga, Spain
- Department of Medicine, Faculty of Medicine, University of Malaga, Malaga, Spain
| | - Celia Gaona-Romero
- Laboratory of Neurobiology, CIMES, University of Malaga, Malaga, Spain
- Department of Medicine, Faculty of Medicine, University of Malaga, Malaga, Spain
| | - Marta Carretero-Rey
- Laboratory of Neurobiology, CIMES, University of Malaga, Malaga, Spain
- Department of Medicine, Faculty of Medicine, University of Malaga, Malaga, Spain
| | - Cristina Rey Blanes
- Laboratory of Neurobiology, CIMES, University of Malaga, Malaga, Spain
- Department of Medicine, Faculty of Medicine, University of Malaga, Malaga, Spain
| | - Zafar U Khan
- Laboratory of Neurobiology, CIMES, University of Malaga, Malaga, Spain
- Department of Medicine, Faculty of Medicine, University of Malaga, Malaga, Spain
- CIBERNED, Institute of Health Carlos III, Madrid, Spain
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