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首页> 外文期刊>Immunopharmacology and immunotoxicology >Sequence determinants of modified cobra venom neurotoxin which induce immune resistance to experimental allergic encephalomyelitis: molecular mechanisms for immunologic action.
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Sequence determinants of modified cobra venom neurotoxin which induce immune resistance to experimental allergic encephalomyelitis: molecular mechanisms for immunologic action.

机译:修饰眼镜蛇毒神经毒素的序列决定子,其诱导对实验性变应性脑脊髓炎的免疫抗性:免疫作用的分子机制。

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摘要

A nontoxic, iodoacetamide-modified cobratoxin derivative (CAM-NTX) induced resistance to experimental allergic encephalomyelitis (EAE) in guinea pigs. Resistance was retained after trypsin digestion and shown to reside in N-terminal and central peptides of CAM-NTX. A similarly modified protein cardiotoxin (CAM-CTX), representative of proteins homologous with cobratoxin, was not immunosuppressive. Depressed clinical symptoms in EAE-resistant animals correlated with reduced lymphocytic infiltration of the brain. Antibody to myelin basic protein (MBP) was reduced in immunosuppressed animals. The immunoinhibitory determinants in CAM-NTX may mimic immune response suppressor proteins (SIRS-alpha 7) and the EAE-resistance region of MBP.
机译:一种无毒的碘乙酰胺修饰的眼镜蛇毒素衍生物(CAM-NTX)诱导了豚鼠对实验性变应性脑脊髓炎(EAE)的耐药性。胰蛋白酶消化后,抗性得以保留,并显示存在于CAM-NTX的N末端和中央肽中。代表与眼镜蛇毒素同源的蛋白质的类似修饰的蛋白质心脏毒素(CAM-CTX)没有免疫抑制作用。在抗EAE的动物中抑郁的临床症状与大脑的淋巴细胞浸润减少有关。免疫抑制动物的髓鞘碱性蛋白(MBP)抗体减少。 CAM-NTX中的免疫抑制决定簇可以模拟免疫应答抑制蛋白(SIRS-alpha 7)和MBP的EAE耐药区域。

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