The developmental changes in the expression of Rap1B and the effect of mo-nocular form deprivation during the critical period on its expression in the mouse superior colliculus
10.13389/j.cnki.rao.2024.0100
- VernacularTitle:小鼠上丘Rap1B表达的发育性变化及关键期单眼形觉剥夺对其的影响
- Author:
Changlin LUAN
1
;
Ying LING
;
Jingjing YE
;
Xuefeng SHI
Author Information
1. 300020 天津市,天津医科大学眼科临床学院,天津市眼科医院,天津市眼科研究所,天津市眼科学与视觉科学重点实验室
- Keywords:
visual development;
neural plasticity;
superior colliculus;
monocular form deprivation;
amblyopia;
Rap1B
- From:
Recent Advances in Ophthalmology
2024;44(7):522-525
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the developmental changes in the expression of Rap1B and the effect of monocular form deprivation(MD)during the critical period of visual development on the expression of Rap1B in the mouse superior colliculus(SC).Methods Forty-five SPF-grade healthy male C57BL/6J mice were used in this experimental study.Ex-periment 1:To study the developmental changes of Rap1B expression in the mouse SC,the experimental mice were divided into three groups:the pre-critical period group[postnatal day 18(P18)],the critical period group(P32),and the adult group(P60).The expression levels of Rap1B gene and protein in the left and right SC of mice in each group were detected by quantitative polymerase chain reaction(qPCR)and Western blot,respectively.Experiment 2:To study the effect of MD on the expression levels of Rap1B gene and protein in the SC,the experimental mice were divided into two groups:the right eye MD group(MD models of the right eyes were established at P28 and detected at P32)and the normal control group(NC group,P32).The expression levels of Rap1B gene and protein in the left and right SC of mice in each group were measured by qPCR and Western blot,respectively.Results The expression levels of Rap1B gene and protein were low in the left and right SC of mice in the pre-critical period group;compared with the pre-critical period group,the ex-pression levels of Rap1B gene and protein in the critical period group significantly increased(both P＜0.05);compared with the critical period group,the expression levels of Rap1B gene and protein in the adult group significantly decreased(both P＜0.05).Mice in the right eye MD group showed significantly higher expression levels of Rap1B gene and protein in the left SC(both P＜0.05),while significantly lower expression levels of Rap1B gene and protein in the right SC(both P＜0.05)compared to mice in the NC group.Conclusion The developmental trend of Rap1B gene expression in the mouse SC is consistent with the critical period of visual development,and Rap1B may be involved in the regulatory effect of MD during the critical period on the development of SC.
