Modulating the catalytic activity of AMPK has neuroprotective effects against α-synuclein toxicity.
Modulating the catalytic activity of AMPK has neuroprotective effects against α-synuclein toxicity.
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DOI:
10.1186/s13024-017-0220-x
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发表时间:
2017-11-03
影响因子:
15.1
通讯作者:
Schneider BL
中科院分区:
文献类型:
--
作者:
Bobela W;Nazeeruddin S;Knott G;Aebischer P;Schneider BL
Metabolic perturbations and slower renewal of cellular components associated with aging increase the risk of Parkinson’s disease (PD). Declining activity of AMPK, a critical cellular energy sensor, may therefore contribute to neurodegeneration. Here, we overexpress various genetic variants of the catalytic AMPKα subunit to determine how AMPK activity affects the survival and function of neurons overexpressing human α-synuclein in vivo. Both AMPKα1 and α2 subunits have neuroprotective effects against human α-synuclein toxicity in nigral dopaminergic neurons. Remarkably, a modified variant of AMPKα1 (T172Dα1) with constitutive low activity most effectively prevents the loss of dopamine neurons, as well as the motor impairments caused by α-synuclein accumulation. In the striatum, T172Dα1 decreases the formation of dystrophic axons, which contain aggregated α-synuclein. In primary cortical neurons, overexpression of human α-synuclein perturbs mitochondrial and lysosomal activities. Co-expressing AMPKα with α-synuclein induces compensatory changes, which limit the accumulation of lysosomal material and increase the mitochondrial mass. Together, these results indicate that modulating AMPK activity can mitigate α-synuclein toxicity in nigral dopamine neurons, which may have implications for the development of neuroprotective treatments against PD. The online version of this article (10.1186/s13024-017-0220-x) contains supplementary material, which is available to authorized users.
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影响因子:
5.6
作者:
Crozet P;Margalha L;Confraria A;Rodrigues A;Martinho C;Adamo M;Elias CA;Baena-González E
通讯作者:
Baena-González E
影响因子:
29
作者:
Gowans GJ;Hawley SA;Ross FA;Hardie DG
通讯作者:
Hardie DG
DOI:
10.1126/science.1196371
发表时间:
2011-01-28
期刊:
Science (New York, N.Y.)
影响因子:
--
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通讯作者:
Shaw RJ
影响因子:
3.7
作者:
Chopra P;Lee J;Kang J;Lee S
通讯作者:
Lee S
影响因子:
3.7
作者:
Clark J;Silvaggi JM;Kiselak T;Zheng K;Clore EL;Dai Y;Bass CE;Simon DK
通讯作者:
Simon DK