RGS14414 treatment induces memory enhancement and rescues episodic memory deficits

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
Mariam Masmudi-MartínZafar U Khan

Abstract

Memory deficits affect a large proportion of the human population and are associated with aging and many neurologic, neurodegenerative, and psychiatric diseases. Treatment of this mental disorder has been disappointing because all potential candidates studied thus far have failed to produce consistent effects across various types of memory and have shown limited to no effects on memory deficits. Here, we show that the promotion of neuronal arborization through the expression of the regulator of G-protein signaling 14 of 414 amino acids (RGS14414) not only induced robust enhancement of multiple types of memory but was also sufficient for the recovery of recognition, spatial, and temporal memory, which are kinds of episodic memory that are primarily affected in patients or individuals with memory dysfunction. We observed that a surge in neuronal arborization was mediated by up-regulation of brain-derived neurotrophic factor (BDNF) signaling and that the deletion of BDNF abrogated both neuronal arborization activation and memory enhancement. The activation of BDNF-dependent neuronal arborization generated almost 2-fold increases in synapse numbers in dendrites of pyramidal neurons and in neurites of nonpyramidal neurons. This incr...Continue Reading

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Citations

Jun 12, 2021·Journal of Neuroscience Research·Irene Navarro-LobatoZafar U Khan
Jul 3, 2021·International Journal of Molecular Sciences·Nicholas H HarbinJohn R Hepler

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