The anti-inflammatory activity of HMGB1 A box is enhanced when fused with C-terminal acidic tail.

The anti-inflammatory activity of HMGB1 A box is enhanced when fused with C-terminal acidic tail.
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DOI:
10.1155/2010/915234
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发表时间:
2010
影响因子:
--
通讯作者:
He F
He F
中科院分区:
其他
文献类型:
--
作者:
Gong W;Zheng Y;Chao F;Li Y;Xu Z;Huang G;Gao X;Li S;He F

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HMGB1由A盒、B盒和C尾区组成,是一种重要的促炎细胞因子,参与多种炎症性疾病。B盒介导促炎活性,而A盒单独作为HMGB1的特异性拮抗剂。C尾对A盒的空间结构有贡献,并调节HMGB1 DNA结合的特异性。目前尚不清楚C尾是否能增强A盒的抗炎作用。在本研究中,我们构建了由A盒和C尾组成的融合蛋白,其中B盒被删除,A盒和C尾直接连接或通过柔性连接序列(Gly4Ser)3连接。体内外实验表明,这两种融合蛋白比单独的A盒具有更高的抗炎活性。这表明融合的C尾巴增强了A盒的抗炎作用。
HMGB1, composed of the A box, B box, and C tail domains, is a critical proinflammatory cytokine involved in diverse inflammatory diseases. The B box mediates proinflammatory activity, while the A box alone acts as a specific antagonist of HMGB1. The C tail contributes to the spatial structure of A box and regulates HMGB1 DNA binding specificity. It is unknown whether the C tail can enhance the anti-inflammatory effect of A box. In this study, we generated fusion proteins consisting of the A box and C tail, in which the B box was deleted and the A box and C tail were linked either directly or by the flexible linker sequence (Gly4Ser)3. In vitro and in vivo experiments showed that the two fusion proteins had a higher anti-inflammatory activity compared to the A box alone. This suggests that the fused C tail enhances the anti-inflammatory effect of the A box.
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影响因子: --
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