Reversal of memory and autism-related phenotypes in Tsc2+/− mice via inhibition of Nlgn1

Autor: Kleanthi Chalkiadaki, Elpida Statoulla, Maria Zafeiri, Nabila Haji, Jean-Claude Lacaille, Craig M. Powell, Seyed Mehdi Jafarnejad, Arkady Khoutorsky, Christos G. Gkogkas
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Frontiers in Cell and Developmental Biology, Vol 11 (2023)
Druh dokumentu: article
ISSN: 2296-634X
DOI: 10.3389/fcell.2023.1205112
Popis: Tuberous sclerosis complex (TSC) is a rare monogenic disorder co-diagnosed with high rates of autism and is caused by loss of function mutations in the TSC1 or TSC2 genes. A key pathway hyperactivated in TSC is the mammalian/mechanistic target of rapamycin complex 1 (mTORC1), which regulates cap-dependent mRNA translation. We previously demonstrated that exaggerated cap-dependent translation leads to autism-related phenotypes and increased mRNA translation and protein expression of Neuroligin 1 (Nlgn1) in mice. Inhibition of Nlgn1 expression reversed social behavior deficits in mice with increased cap-dependent translation. Herein, we report elevated translation of Nlgn1 mRNA and an increase in its protein expression. Genetic or pharmacological inhibition of Nlgn1 expression in Tsc2+/− mice rescued impaired hippocampal mGluR-LTD, contextual discrimination and social behavior deficits in Tsc2+/− mice, without correcting mTORC1 hyperactivation. Thus, we demonstrate that reduction of Nlgn1 expression in Tsc2+/− mice is a new therapeutic strategy for TSC and potentially other neurodevelopmental disorders.
Databáze: Directory of Open Access Journals