Modulation of a novel death, pyroptosis by alarmins in septic shock
警报素对败血性休克中新的死亡——细胞焦亡的调节
基本信息
- 批准号:23590519
- 负责人:
- 金额:$ 3.41万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2011
- 资助国家:日本
- 起止时间:2011 至 2013
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Pyroptosis is a caspase-1 dependent cell death, associated with proinflammatory cytokine production, and plays a crucial role in sepsis. Pyroptosis is induced by microbial PAMPs and endogenous DAMPs. Notably, human antimicrobial peptide LL-37 protects the septic animal models. Thus, to elucidate the action of LL-37 on sepsis, we utilized LPS (lipopolysaccharide) and ATP as a PAMP and a DAMP, respectively. The data indicated that the LPS/ATP-treatment of macrophage-like J774 cell induces the features of pyroptosis (IL-1 mRNA expression, caspase-1 activation, inflammasome formation and cell death). Moreover, LL-37 inhibits the LPS/ATP-induced IL-1 expression, caspase-1 activation, inflammasome formation and cell death. Notably, LL-37 suppressed the LPS binding to target cells and ATP-induced/P2X7-mediated caspase-1 activation. These observations suggest that LL-37 potently inhibits the LPS/ATP-induced pyroptosis by blocking the action of LPS and inhibiting the response of P2X7 to ATP.
焦亡是一种caspase-1依赖性细胞死亡,与促炎细胞因子的产生有关,在脓毒症中起着至关重要的作用。焦亡由微生物PAMP和内源性DAMP诱导。值得注意的是,人抗微生物肽LL-37保护脓毒症动物模型。因此,为了阐明LL-37对脓毒症的作用,我们分别利用LPS(脂多糖)和ATP作为PAMP和DAMP。结果表明,LPS/ATP处理后的巨噬细胞样J774细胞具有细胞凋亡的特征(IL-1 mRNA表达、caspase-1激活、炎性小体形成和细胞死亡)。此外,LL-37抑制LPS/ATP诱导的IL-1表达、caspase-1活化、炎性小体形成和细胞死亡。值得注意的是,LL-37抑制LPS与靶细胞的结合和ATP诱导的/P2 X7介导的caspase-1活化。这些观察结果表明,LL-37通过阻断LPS的作用和抑制P2 X7对ATP的反应而有效地抑制LPS/ATP诱导的焦亡。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
The mechanism for the release of HMGN1, alarmin, from LPS stimulated RAW264.7 cells.
LPS 刺激 RAW264.7 细胞释放 HMGN1(警报素)的机制。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:HARUTA Ikuko;YANAGISAWA Naoko;SHIMIZU Kyoko;ABE Yoshihiro;OMORI-MIYAKE Miyuki;YAGI Junji;SHIRATORI Keiko;杉本真也,奥田賢一,千葉明生,佐藤主税,水之江義充;村上泰介
- 通讯作者:村上泰介
Antimicrobial peptides, human defensins and LL-37, modulate neutrophil apoptosis
抗菌肽、人类防御素和 LL-37,调节中性粒细胞凋亡
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:Nagaoka I;Suzuki K;Murakami T;Niyonsaba F;Tamura H;Hirata M
- 通讯作者:Hirata M
Antimicrobial peptides, human defensins and LL-37
抗菌肽、人类防御素和 LL-37
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:Masahiro Nagahama;Akiko Ohkubo;Masataka Oda;Keiko Kobayashi;Katsuhiko Amimoto;Kazuaki Miyamoto;and Jun Sakurai;Isao Nagaoka
- 通讯作者:Isao Nagaoka
The effects of antimicrobial peptide LL-37 on the pyroptosis of macrophages and a polymicrobial sepsis model
抗菌肽LL-37对巨噬细胞焦亡和多种微生物脓毒症模型的影响
- DOI:
- 发表时间:2014
- 期刊:
- 影响因子:0
- 作者:Hu Z;Murakami T;Suzuki K;Tamura H;Nagaoka I
- 通讯作者:Nagaoka I
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NAGAOKA Isao其他文献
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{{ truncateString('NAGAOKA Isao', 18)}}的其他基金
Modulation of host cell apoptosis during sepsis by alarmins
警报素对脓毒症期间宿主细胞凋亡的调节
- 批准号:
20590456 - 财政年份:2008
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Molecular mechanism for the regulation of septic shock by endogenous antimicrobial cathelicidin peptides
内源性抗菌抗菌肽调节感染性休克的分子机制
- 批准号:
17590401 - 财政年份:2005
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Modulation of neutrophil apoptosis in septic shock and its regulation by endogenous antimicrobial peptides
脓毒性休克中性粒细胞凋亡的调节及其内源性抗菌肽的调节
- 批准号:
15590400 - 财政年份:2003
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Evaluation of the expression of the neutrophil antibacterial defensin genes
中性粒细胞抗菌防御素基因表达的评估
- 批准号:
04807031 - 财政年份:1992
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)