Conserved roles of C. elegans and human MANFs in sulfatide binding and cytoprotection.
Conserved roles of C. elegans and human MANFs in sulfatide binding and cytoprotection.
复制标题
DOI:
10.1038/s41467-018-03355-0
复制
发表时间:
2018-03-01
影响因子:
16.6
通讯作者:
Ma DK
中科院分区:
文献类型:
--
作者:
Bai M;Vozdek R;Hnízda A;Jiang C;Wang B;Kuchar L;Li T;Zhang Y;Wood C;Feng L;Dang Y;Ma DK
Mesencephalic astrocyte-derived neurotrophic factor (MANF) is an endoplasmic reticulum (ER) protein that can be secreted and protects dopamine neurons and cardiomyocytes from ER stress and apoptosis. The mechanism of action of extracellular MANF has long been elusive. From a genetic screen for mutants with abnormal ER stress response, we identified the gene Y54G2A.23 as the evolutionarily conserved C. elegans MANF orthologue. We find that MANF binds to the lipid sulfatide, also known as 3-O-sulfogalactosylceramide present in serum and outer-cell membrane leaflets, directly in isolated forms and in reconstituted lipid micelles. Sulfatide binding promotes cellular MANF uptake and cytoprotection from hypoxia-induced cell death. Heightened ER stress responses of MANF-null C. elegans mutants and mammalian cells are alleviated by human MANF in a sulfatide-dependent manner. Our results demonstrate conserved roles of MANF in sulfatide binding and ER stress response, supporting sulfatide as a long-sought lipid mediator of MANF’s cytoprotection. MANF is a secreted ER stress-inducible protein that protects neurons, pancreatic β cells and cardiomyocytes from cell death under oxidative stress, hypoxic or ischemic conditions. Here the authors show that MANF confers cytoprotection through direct binding to sulfatide followed by cellular uptake in both C. elegans and mammalian cells.
登录
查看更多内容
影响因子:
5
作者:
Glembotski CC
通讯作者:
Glembotski CC
DOI:
10.1126/science.aaf3646
发表时间:
2016-07-01
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Neves J;Zhu J;Sousa-Victor P;Konjikusic M;Riley R;Chew S;Qi Y;Jasper H;Lamba DA
通讯作者:
Lamba DA
影响因子:
3.7
作者:
Lindström R;Lindholm P;Kallijärvi J;Palgi M;Saarma M;Heino TI
通讯作者:
Heino TI
影响因子:
64.8
作者:
Calfon, M;Zeng, HQ;Ron, D
通讯作者:
Ron, D
DOI:
10.3791/52118
发表时间:
2015-01-03
期刊:
Journal of visualized experiments : JoVE
影响因子:
--
作者:
Bauer DE;Canver MC;Orkin SH
通讯作者:
Orkin SH