EasySep™小鼠TIL（CD45）正选试剂盒
产品号 #100-0532_C
抑制半胱天冬酶-3，-6，-7，-8和-10
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总览
Ac-DEVD-CMK是一种不可逆的、细胞可渗透的肽基半胱天冬酶-3抑制剂(Thornberry & Lazebnik；Zhang et al.)。它还抑制半胱天冬酶-6， -7， -8和-10 (Thornberry & Lazebnik；Zhang et al.)。本产品作为该分子的三氟乙酸盐形式供应。
癌症研究
·部分阻断淋巴瘤细胞凋亡（Schrantz et al.）。
·抑制神经元中SIN-1诱导的半胱天冬酶-3的激活（Zhang et al.）。
别名
Ac‑Asp‑Glu‑Val‑Asp‑CMK, Caspase‑3 抑制剂 III
细胞类型
癌细胞及细胞系，神经元
研究领域
癌症
化学式
C21H31ClN4O11 • XCF3COOH
分子量
551 克/摩尔
纯度
≥98%
产品说明书及文档
请在《产品说明书》中查找相关支持信息和使用说明，或浏览下方更多实验方案。
相关材料与文献
技术资料 (3)
文献 (3)
Peroxynitrite-induced neuronal apoptosis is mediated by intracellular zinc release and 12-lipoxygenase activation. The Journal of neuroscience : the official journal of the Society for Neuroscience 2004 nov
Abstract
Peroxynitrite toxicity is a major cause of neuronal injury in stroke and neurodegenerative disorders. The mechanisms underlying the neurotoxicity induced by peroxynitrite are still unclear. In this study, we observed that TPEN [N,N,N',N'-tetrakis (2-pyridylmethyl)ethylenediamine], a zinc chelator, protected against neurotoxicity induced by exogenous as well as endogenous (coadministration of NMDA and a nitric oxide donor, diethylenetriamine NONOate) peroxynitrite. Two different approaches to detecting intracellular zinc release demonstrated the liberation of zinc from intracellular stores by peroxynitrite. In addition, we found that peroxynitrite toxicity was blocked by inhibitors of 12-lipoxygenase (12-LOX), p38 mitogen-activated protein kinase (MAPK), and caspase-3 and was associated with mitochondrial membrane depolarization. Inhibition of 12-LOX blocked the activation of p38 MAPK and caspase-3. Zinc itself induced the activation of 12-LOX, generation of reactive oxygen species (ROS), and activation of p38 MAPK and caspase-3. These data suggest a cell death pathway triggered by peroxynitrite in which intracellular zinc release leads to activation of 12-LOX, ROS accumulation, p38 activation, and caspase-3 activation. Therefore, therapies aimed at maintaining intracellular zinc homeostasis or blocking activation of 12-LOX may provide a novel avenue for the treatment of inflammation, stroke, and neurodegenerative diseases in which the formation of peroxynitrite is thought to be one of the important causes of cell death.
Manganese induces apoptosis of human B cells: caspase-dependent cell death blocked by bcl-2. Cell death and differentiation 1999 may
Abstract
Manganese ions block apoptosis of phagocytes induced by various agents. The prevention of apoptosis was attributed to the activation of manganous superoxide dismutase (Mn-SOD) and to the antioxidant function of free Mn2+ cations. However, the effect of Mn2+ on B cell apoptosis is not documented. In this study, we investigated the effects of Mn2+ on the apoptotic process in human B cells. We observed that Mn2+ but not Mg2+ or Ca2+, inhibited cell growth and induced apoptosis of activated tonsilar B cells, Epstein Barr virus (EBV)-negative Burkitt's lymphoma cell lines (BL-CL) and EBV-transformed B cell lines (EBV-BCL). In the same conditions, no apoptosis was observed in U937, a monoblastic cell line. Induction of B cell apoptosis by Mn2+ was time- and dose-dependent. The cell permeable tripeptide inhibitor of ICE family cysteine proteases, zVAD-fmk, suppressed Mn2+-induced apoptosis. Furthermore, Mn2+ triggered the activation of interleukin-1beta converting enzyme (ICE/caspase 1), followed by the activation of CPP32/Yama/Apopain/caspase-3. In addition, poly-(ADP-ribose) polymerase (PARP), a cellular substrate for CPP32 protease was degraded to generate apoptotic fragments in Mn2+-treated B cell lines. The inhibitor, zVAD-fmk suppressed Mn2+-triggered CPP32 activation and PARP cleavage and apoptosis. These results indicate that the activation of caspase family proteases is required for the apoptotic process induced by Mn2+ treatment of B cells. While the caspase-1 inhibitor YVAD was unable to block apoptosis, the caspase-3 specific inhibitor DEVD-cmk, partially inhibited Mn2+-induced CPP32 activation, PARP cleavage and apoptosis of cells. Moreover, Bcl-2 overexpression in BL-CL effectively protected cells from apoptosis and cell death induced by manganese. This is the first report showing the involvement of Mn2+ in the regulation of B lymphocyte death presumably via a caspase-dependent process with a death-protective effect of Bcl-2.
Caspases: enemies within. Science (New York, N.Y.) 1998 aug
Abstract
Apoptosis, an evolutionarily conserved form of cell suicide, requires specialized machinery. The central component of this machinery is a proteolytic system involving a family of proteases called caspases. These enzymes participate in a cascade that is triggered in response to proapoptotic signals and culminates in cleavage of a set of proteins, resulting in disassembly of the cell. Understanding caspase regulation is intimately linked to the ability to rationally manipulate apoptosis for therapeutic gain.
更多信息
| Molecular Weight | 551 g/mol |
|---|---|
| Alternative Names | Ac-Asp-Glu-Val-Asp-CMK; Caspase-3 inhibitor III |
| Chemical Formula | C21H31ClN4O11 • XCF3COOH |
| 纯度 | ≥ 98% |
