期刊
NEUROSCIENCE LETTERS
卷 721, 期 -, 页码 -出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2020.134817
关键词
Protein phosphatase 2A; LB100; Methamphetamine addiction; Conditioned place preference
资金
- National Natural Science Foundation of China [81471818, 81871530]
- Shaanxi Province Natural Science Foundation [2017JM8098]
- Shaanxi Key Project on Science and Technology [2017SF-040]
Protein phosphatase 2A (PP2A) is an evolutionarily conserved serine/threonine phosphatase abundant in mammalian brains. Although recent research has revealed that PP2A plays important roles in cocaine and morphine addictions, the mechanism of action of PP2A in methamphetamine (METH) addiction is unclear. LB100 is a PP2A inhibitor able to penetrate the blood-brain barrier (BBB); the role of LB100 in METH-induced conditioned place preference (CPP) has not yet been reported. Here, we explored the roles of LB100 in distinct phases of METH-induced CPP. Our findings indicate that LB100 inhibits the acquisition and reinstatement of METH-induced CPP and promotes the extinction of METH-induced CPP. Moreover, LB100 alone did not affect the natural preference of mice. Intriguingly, repeated administration of LB100 in the extinction phase did not inhibit the reinstatement of METH-induced CPP, but LB100 injection prior to METH administration could significantly block it. Taken together, we found that LB100 has significant effects on different phases of METH-induced CPP, and is therefore, a potentially promising therapeutic for METH addiction.
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