...
首页> 外文期刊>Cell cycle >The oncolytic peptide LTX-315 triggers necrotic cell death
【24h】

The oncolytic peptide LTX-315 triggers necrotic cell death

机译:溶瘤肽LTX-315触发坏死细胞死亡

获取原文
获取原文并翻译 | 示例
           

摘要

The oncolytic peptide LTX-315 has been designed for killing human cancer cells and turned out to stimulate anti-cancer immune responses when locally injected into tumors established in immunocompetent mice. Here, we investigated the question whether LTX-315 induces apoptosis or necrosis. Transmission electron microscopy or morphometric analysis of chromatin-stained tumor cells revealed that LTX-315 failed to induce apoptotic nuclear condensation and rather induced a necrotic phenotype. Accordingly, LTX-315 failed to stimulate the activation of caspase-3, and inhibition of caspases by means of Z-VAD-fmk was unable to reduce cell killing by LTX-315. In addition, 2 prominent inhibitors of regulated necrosis (necroptosis), namely, necrostatin-1 and cycosporin A, failed to reduce LTX-315-induced cell death. In conclusion, it appears that LTX-315 triggers unregulated necrosis, which may contribute to its pro-inflammatory and pro-immune effects.
机译:溶瘤肽LTX-315已被设计用于杀死人类癌细胞,并被证明当局部注射到免疫能力强的小鼠体内的肿瘤中时,可刺激抗癌免疫反应。在这里,我们调查了LTX-315是否诱导凋亡或坏死的问题。染色质染色的肿瘤细胞的透射电子显微镜或形态分析表明,LTX-315未能诱导凋亡核浓缩,而是诱导了坏死表型。因此,LTX-315不能刺激caspase-3的活化,并且通过Z-VAD-fmk抑制胱天蛋白酶不能减少LTX-315对细胞的杀伤作用。此外,两种主要的调节性坏死抑制剂(坏死病),即necrostatin-1和cycosporin A,均未能降低LTX-315诱导的细胞死亡。总之,看来LTX-315触发了不受调节的坏死,这可能有助于其促炎和促免疫作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号