GALNT6 Stabilizes GRP78 Protein by O-glycosylation and Enhances its Activity to Suppress Apoptosis Under Stress Condition.
GALNT6 Stabilizes GRP78 Protein by O-glycosylation and Enhances its Activity to Suppress Apoptosis Under Stress Condition.
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DOI:
10.1016/j.neo.2016.11.007
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发表时间:
2017-01
期刊:
影响因子:
--
通讯作者:
Park JH
中科院分区:
文献类型:
--
作者:
Lin J;Chung S;Ueda K;Matsuda K;Nakamura Y;Park JH
We previously reported that overexpression of an O-type glycosyltransferase, GALNT6 (polypeptide N-acetylgalactosaminyltransferase 6) played critical roles in mammary carcinogenesis. To further investigate the biological function of GALNT6, we screened a substrate protein(s) of GALNT6 using a VVA (Vicia villosa agglutinin) lectin (specific to GalNAc-Ser/Thr) pull-down method followed by mass spectrometry analysis. Here we report GRP78 (glucose-regulated protein 78, also known as HSPA5, heat shock 70 kDa protein 5), which is highly expressed in cancer cells and indicated to play important roles in various cellular processes including ER (endoplasmic reticulum) stress and autophagy, as a novel substrate of GALNT6. We found that GALNT6-induced O-glycosylation is critical for the stability of GRP78, its subcellular localization in ER, and its anti-apoptotic function. Furthermore, we demonstrated that overexpression of GRP78 could be important for Golgi-to-ER relocation of GALNT6. Collectively, our study revealed biological significances of O-glycosylation of GRP78 protein, which might play significant roles in the survival of cancer cells, and thus provided a new insight in cancer cell death and useful information for development of anti-cancer treatment targeting the GALNT6-GRP78 pathway.
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影响因子:
5.2
作者:
Lin J;Deng Z;Tanikawa C;Shuin T;Miki T;Matsuda K;Nakamura Y
通讯作者:
Nakamura Y
影响因子:
7.4
作者:
Zoli, W;Ulivi, P;Tesei, A;Fabbri, F;Rosetti, M;Maltoni, R;Giunchi, DC;Ricotti, L;Brigliadori, G;Vannini, I;Amadori, D
通讯作者:
Amadori, D
影响因子:
11.2
作者:
Cook KL;Shajahan AN;Wärri A;Jin L;Hilakivi-Clarke LA;Clarke R
通讯作者:
Clarke R
影响因子:
8
作者:
Luo, B.;Lee, A. S.
通讯作者:
Lee, A. S.
DOI:
10.1083/jcb.201003055
发表时间:
2010-05-31
期刊:
The Journal of cell biology
影响因子:
--
作者:
Gill DJ;Chia J;Senewiratne J;Bard F
通讯作者:
Bard F