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Spantide I
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Spantide I TFA 是substance P 的类似物,是选择性的神经激肽-1受体 (NK1 receptor) 的拮抗剂,其对NK1 和NK2 受体的Ki 值分别为 230 nM 和8150 nM。Spantide I可减少感染角膜的1型细胞因子和增强2型细胞因子IL-10,从而显著减少角膜穿孔。
Spantide I (50 and 100 nM perfused through the cerebral ventricles) causes a complete respiratory arrest in all of the examined animals.Spantide I (36 μg/mouse, ip daily) significantly decreases the number of perforated corneas, bacterial counts, and PMNs. Spantide I also downregulates the mRNA levels for type I cytokines (e.g., IFN-γ) as well as MIP-2, IL-6, TNF-α, and IL-1β.
单字母:H2N-rPKPQQwFwLL-NH2
多字母:H2N-DArg-Pro-Lys-Pro-Gln-Gln-DTrp-Phe-DTrp-Leu-Leu-NH2
氨基酸个数:11
分子式:C75H108N20O13
平均分子量(MW):1497.79
精确分子量(Exact Mass)(MW):1496.84
等电点(PI):-
pH=7.0时的净电荷数:2.97
GRAVY:-0.91
亲水残基比例:-
消光系数:11000
溶解建议:疏水
参考文献:
Spantide I decreases type I cytokines, enhances IL-10, and reduces corneal perforation in susceptible mice after Pseudomonas aeruginosa infection【DOI: 10.1167/iovs.06-0882】

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