A behavioral tagging account of kinase contribution to memory formation after spaced aversive training.

iScience

Instituto de Biología Celular y Neurociencia "Prof. E. De Robertis" (IBCN), Facultad de Medicina, UBA-CONICET, Ciudad Autónoma de Buenos Aires, Argentina.

Published: August 2023


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

Long-term memory (LTM) can be induced by repeated spaced training trials. Using the weak inhibitory avoidance (wIA) task, we showed that one wIA session does not lead to a 24-h LTM, whereas two identical wIA sessions spaced by 15 min to 6 h induce a 24-h LTM. This LTM promotion depends both on hippocampal protein synthesis and the activity of several kinases. In agreement with the behavioral tagging (BT) hypothesis, our results suggest that the two training sessions induce transient learning tags and lead, via a cooperative effect, to the synthesis of plasticity-related proteins (PRPs) that become available and captured by the tag from the second session. Although ERKs1/2 are needed for PRPs synthesis and CaMKs are required for tag setting, PKA participates in both processes. We conclude that the BT mechanism accounts for the molecular constraints underlying the classic effect of spaced learning on LTM formation.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10372744PMC
http://dx.doi.org/10.1016/j.isci.2023.107278DOI Listing

Publication Analysis

Top Keywords

behavioral tagging
8
24-h ltm
8
ltm
5
tagging account
4
account kinase
4
kinase contribution
4
contribution memory
4
memory formation
4
spaced
4
formation spaced
4

Similar Publications

Background: Sexually transmitted infections are a significant public health concern, particularly in sub-Saharan Africa, where their prevalence remains high. Promoting awareness and reducing stigma are essential strategies for addressing this challenge, but those affected often have limited access to accurate and culturally appropriate health information. Therefore, innovative solutions are essential to enhance sexual health literacy and encourage informed health-seeking behaviors.

View Article and Find Full Text PDF

Effects of location- and object-based attention on sensory processing have been mostly studied in isolation leaving the relations between them less well understood. In an EEG experiment, temporal dynamics of location- and object-based attention were investigated with a probabilistic spatial cueing task to test temporal differences between sensory enhancement of two locations in one object. Stimuli consisted of two vertical rectangles/bars filled with a random noise pattern.

View Article and Find Full Text PDF

Ti(CH) complexes produced by laser vaporization in a supersonic expansion are investigated with mass spectrometry, infrared laser photodissociation spectroscopy, and UV laser photodissociation. The mass distributions of the cluster ions produced are found to vary significantly with the sample rod mounting configuration in the source. For infrared spectroscopy experiments, the so-called "offset" rod mounting produces colder conditions than the "cutaway" configuration, which allows tagging the ions with one or more argon atoms for the = 1 and 2 complexes.

View Article and Find Full Text PDF

Magnetic Targeting of AAV Gene Therapy for Inner Ear Following Systemic Delivery: Preliminary Findings and Transduction Pattern in Rat Cochlea.

J Assoc Res Otolaryngol

September 2025

Biological Sciences Platform, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, 2075 Bayview Ave., Room M1 102, Toronto, ON, M4N 3M5, Canada.

Purpose: Delivery of therapeutics to the inner ear is complicated by their inaccessible location and the presence of the blood-labyrinth barrier that restricts most blood-borne compounds from entering the inner ear. This study addresses the challenge of optimal delivery in treating inner ear disease, focusing on magnetic targeting gene therapy using adeno-associated virus (AAV).

Methods: The investigation explores three AAV serotypes (AAV2 Quad Mut, AAV2 pANC80L65, and AAV9 PHP.

View Article and Find Full Text PDF

Using BONCAT to dissect the proteome of persisters.

mSphere

September 2025

Leiden Institute of Chemistry and The Institute of Chemical Immunology, Leiden University, Leiden, the Netherlands.

Bacterial persisters are a subpopulation of cells that exhibit a transient non-susceptible phenotype in the presence of bactericidal antibiotic concentrations. This phenotype can lead to the survival and regrowth of bacteria after treatment, resulting in relapse of infections. It is also a contributing factor to antibacterial resistance.

View Article and Find Full Text PDF