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首页> 外文期刊>Cytokine >Drosophila Helical factor is an inducible protein acting as an immune-regulated cytokine in S2 cells
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Drosophila Helical factor is an inducible protein acting as an immune-regulated cytokine in S2 cells

机译:果蝇螺旋因子是一种诱导蛋白,在S2细胞中起免疫调节的细胞因子的作用

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摘要

The innate immunity of Drosophila melanogaster is based on cellular and humoral components. Drosophila Helical factor (Hf), is a molecule previously discovered using an in silico approach and whose expression is controlled by the immune deficiency (Imd) pathway. Here we present evidence demonstrating that Hf is an inducible protein constitutively produced by the S2 hemocyte-derived cell line. Hf expression is stimulated by bacterial extracts that specifically trigger the Imd pathway. In absence of any bacterial challenge, the recombinant form of Hf can influence the expression of the antimicrobial peptides (AMPs) defensin but not drosomycin. These data suggest that in vitro Hf is an inducible and immune-regulated factor, with functions comparable to those of secreted vertebrate cytokines.
机译:果蝇的先天免疫基于细胞和体液成分。果蝇螺旋因子(Hf)是先前使用计算机模拟方法发现的分子,其表达受免疫缺陷(Imd)途径控制。在这里,我们提供证据证明Hf是由S2血细胞来源的细胞系组成性产生的可诱导蛋白。通过特异性触发Imd途径的细菌提取物刺激Hf表达。在没有任何细菌攻击的情况下,Hf的重组形式可以影响抗微生物肽(AMPs)防御素的表达,但不会影响drosomycin的表达。这些数据表明,体外Hf是一种可诱导和免疫调节的因子,其功能与分泌的脊椎动物细胞因子相当。

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