A short Nur77-derived peptide converts Bcl-2 from a protector to a killer.

A short Nur77-derived peptide converts Bcl-2 from a protector to a killer.
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DOI:
10.1016/j.ccr.2008.09.002
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发表时间:
2008-10-07
期刊:
影响因子:
50.3
通讯作者:
Zhang XK
Zhang XK
中科院分区:
医学1区
文献类型:
--
作者:
Kolluri SK;Zhu X;Zhou X;Lin B;Chen Y;Sun K;Tian X;Town J;Cao X;Lin F;Zhai D;Kitada S;Luciano F;O'Donnell E;Cao Y;He F;Lin J;Reed JC;Satterthwait AC;Zhang XK

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Bcl-2可被核受体Nur 77转化为促凋亡分子。然而,尚未探索Bcl-2转化体作为抗癌治疗剂的发展。在这里,我们报告的鉴定Nur 77衍生的Bcl-2转换肽与9个氨基酸(NuBCP-9)及其对映体,在体外和动物中诱导癌细胞凋亡。NuBCP的凋亡作用及其对Bax的激活不受Bcl-2的抑制,而是增强。NuBCP-9对映体与Bcl-2环结合,Bcl-2环与许多癌症相关和信号蛋白具有结构适应性区域的特征。NuBCP-9充当分子开关以去除Bcl-2 BH 4结构域,暴露其BH 3结构域,这进而阻断抗凋亡Bcl-XL的活性。
Bcl-2 can be converted into a pro-apoptotic molecule by nuclear receptor Nur77. However, the development of Bcl-2 converters as anti-cancer therapeutics has not been explored. Here we report the identification of a Nur77-derived Bcl-2 converting peptide with 9 amino acids (NuBCP-9) and its enantiomer, which induce apoptosis of cancer cells in vitro and in animals. The apoptotic effect of NuBCPs and their activation of Bax are not inhibited but rather potentiated by Bcl-2. NuBCP-9 enantiomers bind to the Bcl-2 loop, which shares the characteristics of structurally adaptable regions with many cancer-associated and signaling proteins. NuBCP-9s act as molecular switches to dislodge the Bcl-2 BH4 domain, exposing its BH3 domain, which in turn blocks the activity of anti-apoptotic Bcl-XL.
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发表时间: 2000-01-18
影响因子: 11.1
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