Role of a VGF/BDNF/TrkB Autoregulatory Feedback Loop in Rapid-Acting Antidepressant Efficacy

Journal of Molecular Neuroscience : MN
Cheng JiangStephen R Salton

Abstract

Members of the neurotrophin family and in particular brain-derived neurotrophic factor (BDNF) regulate the response to rapid- and slow-acting chemical antidepressants and voluntary exercise. Recent work suggests that rapid-acting antidepressants that modulate N-methyl-D-aspartate receptor (NMDA-R) signaling (e.g., ketamine and GLYX-13) require expression of VGF (non-acronymic), the BDNF-inducible secreted neuronal protein and peptide precursor, for efficacy. In addition, the VGF-derived C-terminal peptide TLQP-62 (named by its 4 N-terminal amino acids and length) has antidepressant efficacy following icv or intra-hippocampal administration, in the forced swim test (FST). Similar to ketamine, the rapid antidepressant actions of TLQP-62 require BDNF expression, mTOR activation (rapamycin-sensitive), and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor activation (NBQX-sensitive) and are associated with GluR1 insertion. We review recent findings that identify a rapidly induced autoregulatory feedback loop, which likely plays a critical role in sustained efficacy of rapid-acting antidepressants, depression-like behavior, and cognition, and requires VGF, its C-terminal peptide TLQP-62, BDNF/TrkB signaling, the mT...Continue Reading

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Citations

Dec 7, 2018·Neuropsychopharmacology : Official Publication of the American College of Neuropsychopharmacology·Cheng JiangStephen R Salton
May 1, 2019·Cellular and Molecular Neurobiology·Takahiro MizoguchiMasamitsu Shimazawa
May 28, 2020·Journal of Molecular Neuroscience : MN·Daniela MoutinhoJesús R Requena
Aug 10, 2020·Nature Communications·Noam D BeckmannEric E Schadt
Apr 3, 2019·International Journal of Molecular Sciences·Andreina BajCristina Giaroni
May 11, 2019·Annals of the New York Academy of Sciences·Cheng JiangStephen R Salton
Apr 17, 2021·ACS Pharmacology & Translational Science·Calvin LyDavid E Olson
Aug 26, 2021·Neuroscience Letters·Eliyahu DremencovSaak V Ovsepian

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Methods Mentioned

BETA
glycosylation
RNAseq

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