Caspase-dependent and -independent events in apoptosis induced by hydrogen peroxide.
Caspase-dependent and -independent events in apoptosis induced by hydrogen peroxide.
复制标题
过氧化氢诱导的细胞凋亡中的半胱天冬酶依赖性和非依赖性事件。
作者:
Do Kyun Kim;E. S. Cho;Hong
To define the role of caspase-3 in H2O2-induced apoptosis, we introduced caspase-3 cDNA into MCF-7 breast carcinoma cells that otherwise lack caspase-3 expression. H2O2 treatment induced DNA fragmentation and nuclear condensation in the caspase-3-expressing cells, but not in the caspase-3-deficient cells. This indicated that caspase-3 is essential for nuclear events. However, H2O2 induced an externalization of membrane phosphatidylserine (PS) and cell death regardless of caspase-3 expression. These events were not suppressed by Ac-DEVD-CHO and Z-VAD-fmk, which inhibit DEVD-specific caspases and a broad spectrum of caspases, respectively. In Jurkat T cells, these inhibitors abolished H2O2-induced PS relocalization, but not cell death. Therefore, caspases appear to be dispensable for lethality by H2O2, but required for PS redistribution in a cell-type-specific manner.
登录
查看更多内容
DOI:
10.1073/pnas.95.23.13618
发表时间:
1998-11-10
影响因子:
11.1
作者:
Zheng, TS;Schlosser, SF;Flavell, RA
通讯作者:
Flavell, RA
影响因子:
10.5
作者:
Woo, M;Hakem, R;Mak, TW
通讯作者:
Mak, TW
DOI:
10.1016/s0021-9258(18)47344-9
发表时间:
1994-12
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
T. Fernandes‐Alnemri;G. Litwack;E. Alnemri
通讯作者:
T. Fernandes‐Alnemri;G. Litwack;E. Alnemri
DOI:
--
发表时间:
1991
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Mangan,DF;Welch,GR;Wahl,SM
通讯作者:
Wahl,SM
影响因子:
56.9
作者:
Kothakota, S;Azuma, T;Williams, LT
通讯作者:
Williams, LT