Host interneurons mediate plasticity reactivated by embryonic inhibitory cell transplantation in mouse visual cortex.

ABSTRACT: The adult brain lacks sensitivity to changes in the sensory environment found in the juvenile brain. The transplantation of embryonic interneurons has been shown to restore juvenile plasticity to the adult host visual cortex. It is unclear whether transplanted interneurons directly mediate the renewed cortical plasticity or whether these cells act indirectly by modifying the host interneuron circuitry. Here we find that the transplant-induced reorganization of mouse host circuits is specifically mediated by Neuregulin (NRG1)/ErbB4 signaling in host parvalbumin (PV) interneurons. Brief visual deprivation reduces the visual activity of host PV interneurons but has negligible effects on the responses of transplanted PV interneurons. Exogenous NRG1 both prevents the deprivation-induced reducti

SUBMITTER: Zheng X 

PROVIDER: S-EPMC7870960 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature