Yun Yang1,2,3, Xiaomu Wu1,2,3, Xinhui Qu1,2,3, Xinrong Wang4, Chaoqun Luo1,2,3, Lingjuan Li1,2,3, Kunnan Zhang5,2,3. 1. Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated to Nanchang University, Nanchang, China. 2. Institute of Neurology, Jiangxi Provincial People's Hospital, Affiliated to Nanchang University, Nanchang, China. 3. Key Laboratory of Neurology, Jiangxi Provincial People's Hospital, Affiliated to Nanchang University, Nanchang, China. 4. Department of Prenatal Diagnosis, Jiangxi Maternal and Child Health Hospital, Nanchang, China. 5. Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated to Nanchang University, Nanchang, China zkn0791@163.com.
Abstract
OBJECTIVE: This study aims to explore the effect of TREM2 modified BMSCs on hippocampus of AD mice. METHODS: Mouse bone marrow mesenchymal stem cells were isolated and identified. APP/PS1 double transgenic mice were confirmed to be AD model and divided into 4 groups: control group, MSCs group, MSCs+vector group and MSCs+pEGFP-TREM2 group. RESULTS: The incubation period and the number of errors in the MSCs+pEGFP-TREM2 group were significantly decreased than that of control group after 3 days. The quantity and area of Aβ deposition in MSCs+pEGFP-TREM2 group were significantly smaller than that of control group. Aβ40 and Aβ42 levels were significantly decreased most in MSCs+pEGFP-TREM2 group. The expression levels of TREM2 and DAP12 significantly increased in the MSCs+pEGFP-TREM2 group. CONCLUSIONS: TREM2 modified bone marrow MSCs affected the ability of learning and memory of AD model mice and this mechanism may be related to the expression of TREM2 and DAP12 genes.
OBJECTIVE: This study aims to explore the effect of TREM2 modified BMSCs on hippocampus of ADmice. METHODS:Mouse bone marrow mesenchymal stem cells were isolated and identified. APP/PS1 double transgenic mice were confirmed to be AD model and divided into 4 groups: control group, MSCs group, MSCs+vector group and MSCs+pEGFP-TREM2 group. RESULTS: The incubation period and the number of errors in the MSCs+pEGFP-TREM2 group were significantly decreased than that of control group after 3 days. The quantity and area of Aβ deposition in MSCs+pEGFP-TREM2 group were significantly smaller than that of control group. Aβ40 and Aβ42 levels were significantly decreased most in MSCs+pEGFP-TREM2 group. The expression levels of TREM2 and DAP12 significantly increased in the MSCs+pEGFP-TREM2 group. CONCLUSIONS:TREM2 modified bone marrow MSCs affected the ability of learning and memory of AD model mice and this mechanism may be related to the expression of TREM2 and DAP12 genes.