A versatile bifunctional dendritic cell targeting vaccine vector.

A versatile bifunctional dendritic cell targeting vaccine vector.
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一种多功能双功能树突状细胞靶向疫苗载体。

DOI:
10.1021/mp800111a
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发表时间:
2009
影响因子:
4.9
通讯作者:
Suresh,MavanurR
Suresh,MavanurR
中科院分区:
医学2区
文献类型:
--
作者:
Wang,WelsonW;Das,Dipankar;Suresh,MavanurR

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我们开发了一种高效的多功能体内树突状细胞 (DC) 靶向载体,用于递送不同类别的抗原,例如用于疫苗应用的蛋白质、肽、糖脂和裸 DNA。将识别 DC 的 DEC-205 受体的单链抗体 (scFv) 与核心链霉亲和素结构域融合,并在 T7 表达系统的大肠杆菌中表达。双功能融合蛋白 (bfFp) 表达为周质可溶性蛋白,并以其单体形式进行亲和纯化。通过 ELISA 和 Western blot 表征了针对 DEC-205 和生物素的双功能活性。在小鼠体内进行了体内 DC 靶向多种生物素化抗原的研究,例如病毒和细菌蛋白、癌肽、神经节苷脂和某些传染病的 DNA。结果表明,在 bfFp 和共刺激抗 CD40 mAb 存在的情况下,单抗原或多抗原靶向策略中的体液和细胞介导的反应均得到增强。最后,基于 bfFp 的低剂量 DC 靶向抗原可能是为大众设计单价或多价疫苗的有用策略。
We have developed an efficient versatilein vivodendritic cell (DC) targeting vector for delivering different classes of antigens such as proteins, peptide, glycolipids and naked DNA for vaccine applications. A single chain antibody (scFv) that recognizes DEC-205 receptor of DC was fused with a core-streptavidin domain and expressed inEscherichia coliusing the T7 expression system. The bifunctional fusion protein (bfFp) was expressed as a periplasmic soluble protein and affinity-purified in its monomeric form. The bifunctional activity against DEC-205 and biotin was characterized by ELISA and Western blot.In vivoDC targeting of a diverse group of biotinylated antigens such as viral and bacterial proteins, a cancer peptide, gangliosides and DNA of certain infectious diseases was conducted in mice. Results show that in the presence of bfFp and costimulatory anti-CD40 mAb, both humoral and cell-mediated responses were augmented in either the single antigen or multiple antigen targeting strategy. Lastly, bfFp based DC targeting of antigens in low doses may be a useful strategy for the design of monovalent or polyvalent vaccines for the masses.
使用腺病毒载体疫苗免疫后,可完全保护小鼠免受西方马脑炎病毒致死剂量的攻击。
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发表时间: 1995-06-01
影响因子: 4.3
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一种腺病毒载体癌症疫苗,可将肿瘤相关抗原/CD40配体融合蛋白传递至树突状细胞
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