| First Author | Kim S | Year | 2022 |
| Journal | Exp Neurobiol | Volume | 31 |
| Issue | 5 | Pages | 332-342 |
| PubMed ID | 36351843 | Mgi Jnum | J:349317 |
| Mgi Id | MGI:7641543 | Doi | 10.5607/en22033 |
| Citation | Kim S, et al. (2022) Visuosocial Preference Memory, but Not Avoidance Memory, Requires PLCgamma1 in the CA2 Hippocampus. Exp Neurobiol 31(5):332-342 |
| abstractText | Visuosocial memory is defined as stored visual information containing social context. Primates have a powerful ability to associate visuosocial memory with episodic memory. However, the existence of visuosocial memory in mice remains unclear. Here, we design a novel vision-specific social memory test using a portrait picture or mirrored self-image and demonstrate that mice can distinguish conspecific from other species by forming a visuosocial memory. Because CA2 hippocampus has been reported as a critical brain region for social memory, we develop CA2-specific blockade of memory formation through deletion of phospholipase C gamma 1 (PLCgamma1), which is a key molecule in the brain-derived neurotrophic factor (BDNF) signaling pathway. Interestingly, these mice have intact sociability but impaired social memory in three chamber test and five-trial social memory test, which is highly dependent on visual information. Finally, PLCgamma1 deletion in CA2 impairs visuosocial preference memory, but not avoidance memory, whereas non-social object recognition is intact. Our study proposes that mice have visuosocial memory, just as primates and humans. |
