Role of FMRP in rapid antidepressant effects and synapse regulation.
Role of FMRP in rapid antidepressant effects and synapse regulation.
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DOI:
10.1038/s41380-020-00977-z
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发表时间:
2021-06
影响因子:
11
通讯作者:
Raab-Graham KF
中科院分区:
文献类型:
--
作者:
Heaney CF;Namjoshi SV;Uneri A;Bach EC;Weiner JL;Raab-Graham KF
Rapid antidepressants are novel treatments for major depressive disorder (MDD) and work by blocking N-methyl-D-aspartate receptors (NMDARs), which, in turn, activate the protein synthesis pathway regulated by mechanistic/mammalian target of rapamycin complex 1 (mTORC1). Our recent work demonstrates that the RNA-binding protein Fragile X Mental Retardation Protein (FMRP) is downregulated in dendrites upon treatment with a rapid antidepressant. Here, we show that the behavioral effects of the rapid antidepressant Ro-25-6981 require FMRP expression, and treatment promotes differential mRNA binding to FMRP in an mTORC1-dependent manner. Further, these mRNAs are identified to regulate transsynaptic signaling. Using a novel technique, we show that synapse formation underlying the behavioral effects of Ro-25-6981 requires GABABR-mediated mTORC1 activity in WT animals. Finally, we demonstrate that in an animal model that lacks FMRP expression and has clinical relevance for Fragile X Syndrome (FXS), GABABR activity is detrimental to the effects of Ro-25-6981. These effects are rescued with the combined therapy of blocking GABABRs and NMDARs, indicating that rapid antidepressants alone may not be an effective treatment for people with comorbid FXS and MDD.
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影响因子:
11
作者:
Chowdhury GM;Zhang J;Thomas M;Banasr M;Ma X;Pittman B;Bristow L;Schaeffer E;Duman RS;Rothman DL;Behar KL;Sanacora G
通讯作者:
Sanacora G
影响因子:
3.7
作者:
Abbeduto L;McDuffie A;Thurman AJ
通讯作者:
Thurman AJ
影响因子:
10.6
作者:
Brachman RA;McGowan JC;Perusini JN;Lim SC;Pham TH;Faye C;Gardier AM;Mendez-David I;David DJ;Hen R;Denny CA
通讯作者:
Denny CA
影响因子:
4.3
作者:
Friedman SH;Dani N;Rushton E;Broadie K
通讯作者:
Broadie K
DOI:
10.1007/bf01188497
发表时间:
1994-05-01
期刊:
JOURNAL OF NEUROCYTOLOGY
影响因子:
--
作者:
BENSON, DL;WATKINS, FH;BANKER, G
通讯作者:
BANKER, G