The DUSP26 phosphatase activator adenylate kinase 2 regulates FADD phosphorylation and cell growth.
The DUSP26 phosphatase activator adenylate kinase 2 regulates FADD phosphorylation and cell growth.
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DOI:
10.1038/ncomms4351
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发表时间:
2014
影响因子:
16.6
通讯作者:
Jung, Yong-Keun
中科院分区:
文献类型:
--
作者:
Kim, Hyunjoo;Lee, Ho-June;Oh, Yumin;Choi, Seon-Guk;Hong, Se-Hoon;Kim, Hyo-Jin;Lee, Song-Yi;Choi, Ji-Woo;Hwang, Deog Su;Kim, Key-Sun;Kim, Hyo-Joon;Zhang, Jianke;Youn, Hyun-Jo;Noh, Dong-Young;Jung, Yong-Keun
Adenylate kinase 2 (AK2), which balances adenine nucleotide pool, is a multi-functional protein. Here we show that AK2 negatively regulates tumour cell growth. AK2 forms a complex with dual-specificity phosphatase 26 (DUSP26) phosphatase and stimulates DUSP26 activity independently of its AK activity. AK2/DUSP26 phosphatase protein complex dephosphorylates fas-associated protein with death domain (FADD) and regulates cell growth. AK2 deficiency enhances cell proliferation and induces tumour formation in a xenograft assay. This anti-growth function of AK2 is associated with its DUSP26-stimulating activity. Downregulation of AK2 is frequently found in tumour cells and human cancer tissues showing high levels of phospho-FADDSer194. Moreover, reconstitution of AK2 in AK2-deficient tumour cells retards both cell proliferation and tumourigenesis. Consistent with this, AK2+/− mouse embryo fibroblasts exhibit enhanced cell proliferation with a significant alteration in phospho-FADDSer191. These results suggest that AK2 is an associated activator of DUSP26 and suppresses cell proliferation by FADD dephosphorylation, postulating AK2 as a negative regulator of tumour growth. Adenylate kinase 2 can bind to FADD. In this study, Kim et al. show that adenylate kinase 2 is a tumour suppressor and interacts with the phosphatase DUSP6, and this in turn regulates the phosphorylation of FADD.
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影响因子:
3.7
作者:
Martin, Damali N.;Boersma, Brenda J.;Yi, Ming;Reimers, Mark;Howe, Tiffany M.;Yfantis, Harry G.;Tsai, Yien Che;Williams, Erica H.;Lee, Dong H.;Stephens, Robert M.;Weissman, Allan M.;Ambs, Stefan
通讯作者:
Ambs, Stefan
影响因子:
12.4
作者:
Gómez-Angelats, M;Cidlowski, JA
通讯作者:
Cidlowski, JA
DOI:
10.1084/jem.192.8.1165
发表时间:
2000-10-16
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Rochat-Steiner V;Becker K;Micheau O;Schneider P;Burns K;Tschopp J
通讯作者:
Tschopp J
影响因子:
3.7
作者:
Lam YW;Yuan Y;Isaac J;Babu CV;Meller J;Ho SM
通讯作者:
Ho SM
影响因子:
21.3
作者:
Lee, Ho-June;Pyo, Jong-Ok;Jung, Yong-Keun
通讯作者:
Jung, Yong-Keun