Cited by 22Neuroendocrine regulation and behaviorMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

NMDA receptor in vasopressin 1b neurons is not required for short-term social memory, object memory or aggression

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Williams Avram, Sarah K., Lee, Heon-Jin, Fastman, Jarrett, Cymerblit-Sabba, Adi, Smith, Adam, Vincent, Matthew, Song, June, Granovetter, Michael C. +5 more·2019·Frontiers in Behavioral Neuroscience

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Abstract

Abstract The vasopressin 1b receptor (Avpr1b) plays an important role in social behaviors including aggression, social learning and memory. Genetic removal of Avpr1b from mouse models results in deficits in aggression and short-term social recognition in adults. Avpr1b gene expression is highly enriched in the pyramidal neurons of the hippocampal cornu ammonis 2 (CA2) region. Activity of the hippocampal CA2 has been shown to be required for normal short-term social recognition and aggressive behaviors. Vasopressin acts to enhance synaptic responses of CA2 neurons through a NMDA-receptor dependent mechanism. Genetic removal of the obligatory subunit of the NMDA receptor (Grin1) within distinct hippocampal regions impairs non-social learning and memory. However, the question of a direct role for NMDA receptor activity in Avpr1b neurons to modulate social behavior remains unclear. To answer this question, we first created a novel transgenic mouse line with Cre recombinase knocked into the Avpr1b coding region to genetically target Avpr1b neurons. We confirmed this line has dense Cre expression throughout the dorsal and ventral CA2 regions of the hippocampus, along with scattered expression within the caudate-putamen and olfactory bulb. Conditional removal of the NMDA receptor was achieved by crossing our line to an available floxed Grin1 line. The resulting mice were measured on a battery of social and memory behavioral tests. Surprisingly, we did not observe any differences between Avpr1b-Grin1 knockout mice and their wildtype siblings. We conclude that mice without typical NMDA receptor function in Avpr1b neurons can develop normal aggression as well as short-term social and object memory performance. Significance Statement Activity of neurons that express vasopressin 1b receptor are essential for aggressive and social recognition behaviors. We created a novel transgenic mouse to allow selective targeting of vasopressin 1b neurons. Our studies indicate that NMDA receptor expression in vasopressin 1b neurons (including most CA2 neurons) are not required for development of the typical expression of aggression or recognition memory. Thus, CA2 neurons may have a unique way of incorporating novel stimuli into memory that deserves further investigation.

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Authors
Williams Avram, S. K., Lee, H.-J., Fastman, J., Cymerblit-Sabba, A., Smith, A., Vincent, M., Song, J., Granovetter, M. C., Lee, S.-H., Cilz, N. I., Stackmann, M., Chaturvedi, R., & Young, W. S.
Affiliations
National Institutes of Health (US)
Venue
Frontiers in Behavioral Neuroscience
Published
2019-11-08
Volume
13
Pages
218-218
ISSN
1662-5153 (ISSN-L)
OpenAlex
W2971491137
Cited by
22
References
61
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2023: 4 · 2022: 4 · 2021: 2 · 2020: 5
FWCI
3.46
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Behavioral Neuroscience (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • KU ScholarWorks (University of Kansas) (submittedVersion, cc-by)
Funders
  • National Institutes of Health
  • National Institute of Mental Health (ZIAMH002498)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
NMDA receptor, GRIN1, hippocampal CA2, social recognition memory, object memory, aggression, social behavior, conditional knockout mice, Cre recombinase, olfactory bulb, caudate-putamen

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