Selective inhibition of mitochondrial JNK signaling achieved using peptide mimicry of the Sab kinase interacting motif-1 (KIM1).
Selective inhibition of mitochondrial JNK signaling achieved using peptide mimicry of the Sab kinase interacting motif-1 (KIM1).
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DOI:
10.1021/cb200062a
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发表时间:
2011-08-19
影响因子:
4
通讯作者:
LoGrasso, Philip V.
中科院分区:
文献类型:
--
作者:
Chambers, Jeremy W.;Cherry, Lisa;Laughlin, John D.;Figuera-Losada, Mariana;LoGrasso, Philip V.
The c-jun N-terminal kinases (JNKs) are responsive to stress stimuli leading to activation of proapoptotic proteins and transcription. Additionally, JNK mitochondrial localization has been reported. To selectively target mitochondrial JNK signaling, we exploited JNKs interaction with its mitochondrial scaffold, Sab, using small interfering RNAs (siRNAs) and a cell permeable peptide corresponding to the KIM1 domain of Sab. Gene silencing and peptide interference of this interaction disrupted JNK translocation to the mitochondria and reduced phosphorylation of Bcl-2 without significant impact on c-Jun phosphorylation or AP-1 transcription. In contrast, the JNK inhibitory peptide (TI-JIP1) prevented these three functions. Tat-SabKIM1 selectivity was also demonstrated in anisomycin-stressed HeLa cells where Tat-SabKIM1 prevented Bcl-2 phosphorylation, cell death, loss of mitochondrial membrane potential, and superoxide generation, but not c-Jun phosphorylation. Conversely, TI-JIP1 prevented all aforementioned stress-induced events. This probe introduces a means to evaluate JNK-mediated events on the mitochondria without intervening in nuclear functions of JNK.
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影响因子:
4.8
作者:
Barr, RK;Boehm, I;Bogoyevitch, MA
通讯作者:
Bogoyevitch, MA
影响因子:
8
作者:
Lee, J-J;Lee, J-H;Lee, J-S
通讯作者:
Lee, J-S
DOI:
10.1083/jcb.32.3.719
发表时间:
1967-03
期刊:
The Journal of cell biology
影响因子:
--
作者:
Schnaitman C;Erwin VG;Greenawalt JW
通讯作者:
Greenawalt JW
影响因子:
16
作者:
Ventura, JJ;H端bner, A;Davis, RJ
通讯作者:
Davis, RJ
DOI:
10.1073/pnas.0914878107
发表时间:
2010-07-20
影响因子:
11.1
作者:
Ryan, Jeremy A.;Brunelle, Joslyn K.;Letai, Anthony
通讯作者:
Letai, Anthony