Lactate transport facilitates neurite outgrowth

Bioscience Reports
Kun ChenXuying Sun

Abstract

How glia affect neurite outgrowth during neural development has not been well elucidated. In the present study, we found that disruption of lactate production using 1,4-dideoxy-1,4-imino-D-arabinitol (DAB) and isofagomine significantly interfered with neurite outgrowth and that exogenous application of L-lactate rescued neurite growth failure. Monocarboxylate transporter-2-knockout, which blocked the lactate shuttle in neurons, showed a remarkable decrease in the length of axons and dendrites. We further demonstrated that Akt activity was decreased while glycogen synthase kinase 3β (GSK3β) activity was increased after astrocytic glycogen phosphorylase blockade. Additionally, GSK3βSer9 mutation reversed neurite growth failure caused by DAB and isofagomine. Our results suggested that lactate transportation played a critical role in neural development and disruption of the lactate shuttle in quiescent condition also affected neurite outgrowth in the central nervous system.

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Citations

May 16, 2021·Molecular Neurobiology·Gabriela de Paula ArrifanoMaria Elena Crespo-Lopez
Jul 17, 2021·Neurochemical Research·Binda SunErlong Zhang

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Methods Mentioned

BETA
transfection
PCR

Software Mentioned

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ImageJ

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