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Copper signalling: causes and consequences.


ABSTRACT: Copper-containing enzymes perform fundamental functions by activating dioxygen (O2) and therefore allowing chemical energy-transfer for aerobic metabolism. The copper-dependence of O2 transport, metabolism and production of signalling molecules are supported by molecular systems that regulate and preserve tightly-bound static and weakly-bound dynamic cellular copper pools. Disruption of the reducing intracellular environment, characterized by glutathione shortage and ambient Cu(II) abundance drives oxidative stress and interferes with the bidirectional, copper-dependent communication between neurons and astrocytes, eventually leading to various brain disease forms. A deeper understanding of of the regulatory effects of copper on neuro-glia coupling via polyamine metabolism may reveal novel copper signalling functions and new directions for therapeutic intervention in brain disorders associated with aberrant copper metabolism.

SUBMITTER: Kardos J 

PROVIDER: S-EPMC6198518 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Copper signalling: causes and consequences.

Kardos Julianna J   Héja László L   Simon Ágnes Á   Jablonkai István I   Kovács Richard R   Jemnitz Katalin K  

Cell communication and signaling : CCS 20181022 1


Copper-containing enzymes perform fundamental functions by activating dioxygen (O<sub>2</sub>) and therefore allowing chemical energy-transfer for aerobic metabolism. The copper-dependence of O<sub>2</sub> transport, metabolism and production of signalling molecules are supported by molecular systems that regulate and preserve tightly-bound static and weakly-bound dynamic cellular copper pools. Disruption of the reducing intracellular environment, characterized by glutathione shortage and ambien  ...[more]

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