Zinc ions negatively regulate proapoptotic signaling in cells expressing oncogenic mutant Ras
Zinc ions negatively regulate proapoptotic signaling in cells expressing oncogenic mutant Ras
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锌离子负向调节表达致癌突变体 Ras 的细胞中的促凋亡信号传导
DOI:
10.1007/s10534-022-00376-7
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发表时间:
2022
期刊:
影响因子:
3.5
通讯作者:
Hironori Edamatsu
中科院分区:
文献类型:
--
作者:
Watanabe Eizo;Takasu Osamu;Teratake Youichi;Sakamoto Teruo;Ikeda Toshiaki;Kotani Joji;Kitamura Nobuya;Ohmori Masaaki;Teratani Ayako;Honda Goichi;Hatano Masahiko;Mayer Benjamin;Schneider E. Marion;Oda Shigeto;Hironori Edamatsu
Mutational activation of theRasfamily of proto-oncogenes promotes cell survival and proliferation. Studies using cells cultured in vitro have shown that ectopic expression of constitutively active Ras suppresses apoptosis induced by serum deprivation. However, in some cellular contexts, constitutively active Ras exerts the opposite effects, including apoptosis of serum-starved embryonic fibroblasts. Such observations first came over two decades ago, but the molecular mechanisms by which mutant Ras increases the susceptibility of cells to serum deprivation leading to apoptosis are still not fully understood. To revisit this issue, I investigate the effects of serum depletion and mutant Ras expression on intracellular signaling and transcriptome of cells carrying an inducible allele of constitutively active mutant Hras (HrasG12V). I identify zinc ions (Zn2+) as a serum factor that suppresses proapoptotic signaling in cells expressing HrasG12V. Mechanistically, HrasG12Vexpression along with Zn2+deficiency activates c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (MAPK), which are required for caspase-3 activation involved in the induction of cell death. Transcriptome analyses suggest that HrasG12Vinduces the unfolded protein response (UPR). Further analyses of intracellular signaling biomolecules related to the UPR indicate that HrasG12Vactivates inositol-requiring protein 1 (IRE1), which synergizes with Zn2+deficiency to activate JNK and p38 MAPK signaling. These results provide insights into a role of Zn2+that counteracts proapoptotic signaling activated by mutationally activated Ras.
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影响因子:
64.5
作者:
Yoshida, H;Matsui, T;Mori, K
通讯作者:
Mori, K
影响因子:
16
作者:
Harding, HP;Novoa, I;Ron, D
通讯作者:
Ron, D
DOI:
10.1073/pnas.91.4.1219
发表时间:
1994-02-15
影响因子:
11.1
作者:
PALMITER, RD
通讯作者:
PALMITER, RD
影响因子:
15
作者:
Richardson CER;Cunden LS;Butty VL;Nolan EM;Lippard SJ;Shoulders MD
通讯作者:
Shoulders MD
影响因子:
14.9
作者:
Huang, Da Wei;Sherman, Brad T.;Lempicki, Richard A.
通讯作者:
Lempicki, Richard A.