Peripheral motor neuropathy is associated with defective kinase regulation of the KCC3 cotransporter.
Peripheral motor neuropathy is associated with defective kinase regulation of the KCC3 cotransporter.
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DOI:
10.1126/scisignal.aae0546
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发表时间:
2016-08-02
影响因子:
7.3
通讯作者:
Delpire E
中科院分区:
文献类型:
--
作者:
Kahle KT;Flores B;Bharucha-Goebel D;Zhang J;Donkervoort S;Hegde M;Hussain G;Duran D;Liang B;Sun D;Bönnemann CG;Delpire E
Using exome sequencing, we identified a de novo mutation (c.2971 A>G; T991 A) in SLC12A6, the gene encoding the K+-Cl- cotransporter KCC3, in a patient with an early-onset, progressive, and severe peripheral neuropathy primarily affecting motor neurons. Normally, the WNK kinase—dependent phosphorylation of T991 tonically inhibits KCC3; however, cell swelling triggers Thr991 dephosphorylation to activate the transporter and restore cell volume. KCC3 T991A mutation in patient cells abolished Thr991 phosphorylation, resulted in constitutive KCC3 activity, and compromised cell volume homeostasis. KCC3T991A/T991A mutant mice exhibited constitutive KCC3 activity and recapitulated aspects of the clinical, electrophysiological, and histopathological findings of the patient. These results suggest that the function of the peripheral nervous system depends on finely tuned, kinase-regulated KCC3 activity and implicate abnormal cell volume homeostasis as a previously unreported mechanism of axonal degeneration.
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影响因子:
56.9
作者:
FEENEY, DM;GONZALEZ, A;LAW, WA
通讯作者:
LAW, WA
影响因子:
5.3
作者:
Adragna NC;Ravilla NB;Lauf PK;Begum G;Khanna AR;Sun D;Kahle KT
通讯作者:
Kahle KT
影响因子:
14.9
作者:
Durocher, Y;Perret, S;Kamen, A
通讯作者:
Kamen, A
影响因子:
34.7
作者:
Kaila, Kai;Price, Theodore J.;Payne, John A.;Puskarjov, Martin;Voipio, Juha
通讯作者:
Voipio, Juha
影响因子:
33.6
作者:
Gagnon KB;Delpire E
通讯作者:
Delpire E