Stable expression of a human HSP70 gene in a rat myogenic cell line confers protection against endotoxin.

Stable expression of a human HSP70 gene in a rat myogenic cell line confers protection against endotoxin.
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人类 HSP70 基因在大鼠生肌细胞系中的稳定表达可提供针对内毒素的保护。

DOI:
10.1152/ajpcell.1996.270.4.c1017
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发表时间:
1996
期刊:
The American journal of physiology.
影响因子:
--
通讯作者:
Mestril,R
Mestril,R
中科院分区:
--
文献类型:
--
作者:
Chi,SH;Mestril,R

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最近的报道表明,预热休克对啮齿动物体内的内毒素具有保护作用。目前尚不清楚究竟是什么提供了抵御内毒素的保护。这种保护作用的候选者之一是70 kDa的热休克蛋白(HSP70)。我们发现,温和的热休克预处理是大鼠肌源性细胞系H9c2(2-1),对随后的内毒素暴露具有抵抗力。在内毒素作用下,稳定转染人诱导型HSP70的肌源性大鼠细胞株的存活率高于稳定转染人新霉素标记基因的细胞或亲本细胞系H9c2(2-1)。内毒素诱导细胞损伤的机制被认为是通过内毒素暴露过程中这些肌源性细胞产生一氧化氮来实现的。我们的结论是,无论细胞毒性的具体机制如何,HSP70在保护细胞免受内毒素的有害影响方面发挥了作用。
Recent reports show that a pre-heat shock has a protective effect against endotoxin “in vivo” in rodents. It has remains unclear what actually confers the protection against endotoxin. One candidate for this protective effect is the heat shock protein of 70 kDa (HSP70). We found that a mild heat shock pretreatment is the rat myogenic cell line, H9c2(2-1), confers resistance to a subsequent exposure to endotoxin. A myogenic rat cell line stably transfected with the human inducible HSP70 exhibits an increased survival rate compared with cells stably transfected solely with the selectable neomycin marker gene or the parental cell line H9c2(2-1) when exposed to endotoxin. The mechanism of endotoxin-induced cell injury is postulated to be through the generation of nitric oxide in these myogenic cells during exposure to endotoxin. We conclude that HSP70, regardless of the particular mechanism of cytotoxicity, plays a role in protecting the cell against the deleterious effects of endotoxin.
将纯化的热休克蛋白 hsp70 脂质体递送至大鼠胰岛,以防止白细胞介素 1β 诱导的 β 细胞功能受损
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