MicroRNA-132 in the Adult Dentate Gyrus is Involved in Opioid Addiction Via Modifying the Differentiation of Neural Stem Cells  

作　　者：Meng Jia Xuewei Wang Haolin Zhang Can Ye Hui Ma Mingda Yang Yijing Li Cailian Cui 

机构地区：[1]Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory for Neuroscience of the Ministry of Education and National Health and Family Planning Commission, Neuroscience Research Institute, Peking University

出　　处：《Neuroscience Bulletin》2019年第3期486-496,共11页神经科学通报（英文版）

基　　金：supported by grants from the National Natural Science Foundation(81471353 and 81771433);the National Basic Research Development Program of China(2015CB553500);the Science Fund for Creative Research Groups from the National Natural Science Foundation of China(81521063)

摘　　要：MicroRNA-132(miR-132), a small RNA that regulates gene expression, is known to promote neurogenesis in the embryonic nervous system and adult brain.Although exposure to psychoactive substances can increase miR-132 expression in cultured neural stem cells(NSCs)and the adult brain of rodents, little is known about its role in opioid addiction. So, we set out to determine the effect of miR-132 on differentiation of the NSCs and whether this effect is involved in opioid addiction using the rat morphine self-administration(MSA) model. We found that miR-132 overexpression enhanced the differentiation of NSCs in vivo and in vitro. Similarly, speci?c overexpression of miR-132 in NSCs of the adult hippocampal dentate gyrus(DG) during the acquisition stage of MSA potentiated morphine-seeking behavior. These ?ndings indicate that miR-132 is involved in opioid addiction,probably by promoting the differentiation of NSCs in the adult DG.MicroRNA-132(miR-132), a small RNA that regulates gene expression, is known to promote neurogenesis in the embryonic nervous system and adult brain.Although exposure to psychoactive substances can increase miR-132 expression in cultured neural stem cells(NSCs)and the adult brain of rodents, little is known about its role in opioid addiction. So, we set out to determine the effect of miR-132 on differentiation of the NSCs and whether this effect is involved in opioid addiction using the rat morphine self-administration(MSA) model. We found that miR-132 overexpression enhanced the differentiation of NSCs in vivo and in vitro. Similarly, speci?c overexpression of miR-132 in NSCs of the adult hippocampal dentate gyrus(DG) during the acquisition stage of MSA potentiated morphine-seeking behavior. These ?ndings indicate that miR-132 is involved in opioid addiction,probably by promoting the differentiation of NSCs in the adult DG.

关 键 词：miR-132 OPIOID ADDICTION Neural stem cell DENTATE GYRUS 

分 类 号：R[医药卫生]