Unraveling the mechanism of cell death induced by chemical fibrils.
Unraveling the mechanism of cell death induced by chemical fibrils.
复制标题
DOI:
10.1038/nchembio.1639
复制
发表时间:
2014-11
影响因子:
14.8
通讯作者:
Wells, James A.
中科院分区:
文献类型:
--
作者:
Julien, Olivier;Kampmann, Martin;Bassik, Michael C.;Zorn, Julie A.;Venditto, Vincent J.;Shimbo', Kazutaka;Agard, Nicholas J.;Shimada, Kenichi;Rheingold, Arnold L.;Stockwell, Brent R.;Weissman, Jonathan S.;Wells, James A.
We previously discovered a small-molecule inducer of cell death, named 1541, that non-covalently self-assembles into chemical fibrils (“chemi-fibrils”) and activates procaspase-3 in vitro. We report here that 1541-induced cell death is caused by the fibrillar, rather than the soluble form of the drug. An shRNA screen reveals that knockdown of genes involved in endocytosis, vesicle trafficking, and lysosomal acidification causes partial 1541 resistance. We confirm the role of these pathways using pharmacological inhibitors. Microscopy shows that the fluorescent chemi-fibrils accumulate in punctae inside cells that partially co-localize with lysosomes. Notably, the chemi-fibrils bind and induce liposome leakage in vitro, suggesting they may do the same in cells. The chemi-fibrils induce extensive proteolysis including caspase substrates, yet modulatory profiling reveals that chemi-fibrils form a distinct class from existing inducers of cell death. The chemi-fibrils share similarities to proteinaceous fibrils and may provide insight into their mechanism of cellular toxicity.
登录
查看更多内容
影响因子:
4
作者:
Owen, Shawn C.;Doak, Allison K.;Wassam, Pascal;Shoichet, Molly S.;Shoichet, Brian K.
通讯作者:
Shoichet, Brian K.
DOI:
10.1126/science.1177585
发表时间:
2009-11-06
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Wolan DW;Zorn JA;Gray DC;Wells JA
通讯作者:
Wells JA
影响因子:
7.7
作者:
Wiita AP;Ziv E;Wiita PJ;Urisman A;Julien O;Burlingame AL;Weissman JS;Wells JA
通讯作者:
Wells JA
影响因子:
14.8
作者:
通讯作者:
--
影响因子:
64.5
作者:
Mahrus S;Trinidad JC;Barkan DT;Sali A;Burlingame AL;Wells JA
通讯作者:
Wells JA