Bcl-2 family interaction with the mitochondrial morphogenesis machinery.
Bcl-2 family interaction with the mitochondrial morphogenesis machinery.
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DOI:
10.1038/cdd.2010.89
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发表时间:
2011-02
影响因子:
12.4
通讯作者:
中科院分区:
文献类型:
--
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The regulation of both mitochondrial dynamics and apoptosis is key for maintaining the health of a cell. Bcl-2 family proteins, central in apoptosis regulation, also play roles in maintenance of the mitochondrial network. Here we report that Bax and Bak participate in the regulation of mitochondrial fusion in mouse embryonic fibroblasts, primary mouse neurons and human colon carcinoma cells. To assess how Bcl-2 family members may regulate mitochondrial morphogenesis we determined the binding of a series of chimeras between Bcl-xL and Bax to the mitofusins, Mfn1 and Mfn2. One chimera (containing helix 5 (H5) of Bax replacing H5 of Bcl-xL (Bcl-xL/Bax H5)) co-immunoprecipitated with Mfn1 and Mfn2 significantly better than either wild type Bax or Bcl-xL. Expression of Bcl-xL/Bax H5 in cells reduced the mobility of Mfn1 and Mfn2 and co-localized with ectopic Mfn1 and Mfn2 as well as endogenous Mfn2 to a greater extent than wild type Bax. Ultimately, Bcl-xL/Bax H5 induced substantial mitochondrial fragmentation in healthy cells. Therefore, we propose that Bcl-xL/Bax H5 disturbs mitochondrial morphology by binding and inhibiting Mfn1 and Mfn2 activity, supporting the hypothesis that Bcl-2 family members have the capacity to regulate mitochondrial morphology through binding to the mitofusins in healthy cells.
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DOI:
10.1083/jcb.200905070
发表时间:
2009-08-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
Rolland SG;Lu Y;David CN;Conradt B
通讯作者:
Conradt B
DOI:
10.1073/pnas.0703976104
发表时间:
2007-07-10
影响因子:
11.1
作者:
Brooks, Craig;Wei, Qingqing;Dong, Zheng
通讯作者:
Dong, Zheng
影响因子:
4.8
作者:
Cuddeback, SM;Yamaguchi, H;Wang, HG
通讯作者:
Wang, HG
影响因子:
64.8
作者:
Phair, RD;Misteli, T
通讯作者:
Misteli, T
DOI:
10.1083/jcb.200211046
发表时间:
2003-01-20
期刊:
The Journal of cell biology
影响因子:
--
作者:
Chen H;Detmer SA;Ewald AJ;Griffin EE;Fraser SE;Chan DC
通讯作者:
Chan DC