Title : Metformin suppresses glucose-6-phosphatase expression by a complex I inhibition and AMPK activation-independent mechanism.

Pub. Date : 2009 Oct 16

PMID : 19664596






5 Functional Relationships(s)
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1 Metformin suppresses glucose-6-phosphatase expression by a complex I inhibition and AMPK activation-independent mechanism. Metformin glucose-6-phosphatase catalytic subunit 1 Rattus norvegicus
2 Both metformin and rotenone, an inhibitor of respiratory chain complex I, suppressed glucose-6-phosphatase (G6pc), a rate limiting enzyme of liver glucose production, mRNA expression in a rat hepatoma cell line accompanied by a reduction of intracellular ATP concentration and an activation of AMP-activated protein kinase (AMPK). Metformin glucose-6-phosphatase catalytic subunit 1 Rattus norvegicus
3 Both metformin and rotenone, an inhibitor of respiratory chain complex I, suppressed glucose-6-phosphatase (G6pc), a rate limiting enzyme of liver glucose production, mRNA expression in a rat hepatoma cell line accompanied by a reduction of intracellular ATP concentration and an activation of AMP-activated protein kinase (AMPK). Metformin glucose-6-phosphatase catalytic subunit 1 Rattus norvegicus
4 Interestingly, in contrast to rotenone treatment, G6pc mRNA down-regulation was observed in the NDI1 expressing cells after metformin treatment. Metformin glucose-6-phosphatase catalytic subunit 1 Rattus norvegicus
5 Since NDI1 can functionally complement the complex I under the presence of metformin or rotenone, our results indicate that metformin induces down-regulation of G6pc expression through an inhibition of complex I and an activation of AMPK-independent mechanism. Metformin glucose-6-phosphatase catalytic subunit 1 Rattus norvegicus