Visual Neuroscience Monocular Deprivation Affects Visual Cortex Plasticity Through cPKCγ-Modulated GluR1 Phosphorylation in Mice Yunxia Zhang,1 Tao Fu,2 Song Han,1 Yichao Ding,2 Jing Wang,2 Jiayin Zheng,1 and Junfa Li1 1Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China 2Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China Correspondence: Tao Fu, Beijing PURPOSE. To determine how visual cortex plasticity changes after monocular deprivation Tongren Eye Center, Capital Medical (MD) in mice and whether conventional protein kinase C gamma (cPKCγ ) plays a role University, Beijing 100730, China; in visual cortex plasticity.
[email protected]. Junfa Li, Department of METHODS. cPKCγ membrane translocation levels were quantified by using immunoblot- Neurobiology, School of Basic ting to explore the effects of MD on cPKCγ activation. Electrophysiology was used to Medical Sciences, Capital Medical record field excitatory postsynaptic potential (fEPSP) amplitude with the goal of observ- University, Beijing 100069, China; ing changes in visual cortex plasticity after MD. Immunoblotting was also used to deter-
[email protected]. mine the phosphorylation levels of GluR1 at Ser831. Light transmission was analyzed Received: September 6, 2019 using electroretinography to examine the effects of MD and cPKCγ on mouse retinal Accepted: February 22, 2020 function. Published: April 28, 2020 RESULTS. Membrane translocation levels of cPKCγ significantly increased in the contralat- Citation: Zhang Y, Fu T, Han S, et al. eral visual cortex of MD mice compared to wild-type (WT) mice (P < 0.001). In the Monocular deprivation affects visual contralateral visual cortex, long-term potentiation (LTP) and the phosphorylation levels cortex plasticity through of GluR1 at Ser 831 were increased in cPKCγ +/+ mice after MD.