Hydrogen peroxide-induced apoptosis of HL-60 human leukemia cells is mediated by the oxidants hypochlorous acid and chloramines.
Hydrogen peroxide-induced apoptosis of HL-60 human leukemia cells is mediated by the oxidants hypochlorous acid and chloramines.
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过氧化氢诱导的 HL-60 人白血病细胞凋亡是由氧化剂次氯酸和氯胺介导的。
DOI:
10.1016/s0003-9861(02)00053-x
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发表时间:
2002
期刊:
影响因子:
--
通讯作者:
Burns,CPatrick
中科院分区:
文献类型:
--
作者:
Wagner,BrettA;Britigan,BradleyE;Reszka,KrzysztofJ;McCormick,MichaelL;Burns,CPatrick
We set out to identify whether HOCl, which is generated from H2O2/MPO/Cl−, is a proximal mediator of H2O2programmed cell death in the HL-60 human leukemia cell. We found that authentic HOCl induces apoptosis in the HL-60 cell. Both the addition of methionine, an HOCl scavenger, and the removal of Cl−from the medium to prevent the formation of HOCl inhibited H2O2-induced apoptosis. HL-60 cells underwent apoptosis when exposed to HOCl in full medium, which gives rise to chloramines by the reaction of HOCl with amine groups, but not by HOCl in the amine-free HBSS, in which HOCl but not chloramines can be detected. Authentic chloramines induced apoptosis in this cell line in a concentration-dependent manner and at concentrations lower than HOCl. Full medium exposed to HOCl for 24h would support methionine noninhibitable apoptosis, but did not react with 2-nitro-5-thiobenzoic acid (TNB), raising the possibility that the final inducer is a nonoxidant formed from HOCl and chloramines. We conclude that the signal for apoptosis induced by H2O2in the MPO-containing HL-60 cell involves the reaction of the diffusible oxidant HOCl with amines producing chloramines and a subsequent non-TNB-reactive product.
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影响因子:
3.9
作者:
G. Vile;L. Rothwell;A. Kettle
通讯作者:
A. Kettle
影响因子:
4.7
作者:
Otero,G;Avila,MA;delaPeña,L;Emfietzoglou,D;Cansado,J;Popescu,GF;Notario,V
通讯作者:
Notario,V
影响因子:
--
作者:
A. Kettle;C. Winterbourn
通讯作者:
C. Winterbourn
DOI:
10.1016/s0005-2760(98)00038-1
发表时间:
1998-06-15
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA-LIPIDS AND LIPID METABOLISM
影响因子:
--
作者:
Carr, AC;van den Berg, JJM;Winterbourn, CC
通讯作者:
Winterbourn, CC
影响因子:
4.1
作者:
Ji, C;Amarnath, V;Marnett, LJ
通讯作者:
Marnett, LJ