Dataset Information

Identification of Long Lived Synaptic Proteins by Comprehensive Proteomic Analysis of Synaptosome Protein Turnover

ABSTRACT: Memory formation is believed result from changes in synapse strength and structure. While memories may persist for the lifetime of an organism, the proteins and lipids that make up synapses undergo constant turnover with lifetimes from minutes to days. The molecular basis for memory maintenance may rely on a subset of long-lived proteins (LLPs). While it is known that LLPs exist, whether such proteins are present at synapses is unknown. We performed an unbiased screen using metabolic pulse-chase labeling in mice and cultured neurons combined with quantitative proteomics and identified synaptic LLPs with half-lives of several weeks or longer. Synaptic proteins generally exhibited longer lifetimes than cytosolic proteins. Protein turnover was sensitive to pharmacological manipulations of activity in neuronal cultures or in mice exposed to an enriched environment. We show that synapses contain LLPs and that global synapse protein turnover is modulated by neuronal activity and behavioral experience.

INSTRUMENT(S): LTQ Orbitrap Elite, Q Exactive

ORGANISM(S): Rattus Norvegicus (rat) Mus Musculus (mouse)

TISSUE(S): Brain, Primary Neuron, Cell Culture, Kidney

SUBMITTER: chanhyun na

LAB HEAD: Richard L. Huganir

PROVIDER: PXD007156 | Pride | 2018-03-19

REPOSITORIES: Pride

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Dataset's files

Source:

			Action	DRS
	Control_P1_SILAC_Mouse_Synaptosome_1.raw	Raw
	Control_P1_SILAC_Mouse_Synaptosome_10.raw	Raw
	Control_P1_SILAC_Mouse_Synaptosome_11.raw	Raw
	Control_P1_SILAC_Mouse_Synaptosome_12.raw	Raw
	Control_P1_SILAC_Mouse_Synaptosome_2.raw	Raw

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Publications

Identification of long-lived synaptic proteins by proteomic analysis of synaptosome protein turnover.

Heo Seok S Diering Graham H GH Na Chan Hyun CH Nirujogi Raja Sekhar RS Bachman Julia L JL Pandey Akhilesh A Huganir Richard L RL

Proceedings of the National Academy of Sciences of the United States of America 20180402 16

Memory formation is believed to result from changes in synapse strength and structure. While memories may persist for the lifetime of an organism, the proteins and lipids that make up synapses undergo constant turnover with lifetimes from minutes to days. The molecular basis for memory maintenance may rely on a subset of long-lived proteins (LLPs). While it is known that LLPs exist, whether such proteins are present at synapses is unknown. We performed an unbiased screen using metabolic pulse-ch ...[more]

PMID: 29610302

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