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Immunological assessment of plant-derived avian flu H5/HA1 variants

机译:植物来源的禽流感H5 / HA1变体的免疫学评估

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摘要

Polypeptide variants of the HA1 antigenic domain of the H5N1 avian influenza virus hemagglutinin (HA) molecule were produced in plants using transient and stable expression systems and fused with His/c-myc tags or with mouse or human Fc antibody fragments. The resulting peptides were purified and used for intramuscular immunization of mice. While the recombinant HA1 variants induced a significant serum humoral immune response in the mice, none of the HA1 preparations induced virus-neutralizing antibodies. Fusion with the Fc fragment improved overall yield of the constructs and allowed purification requiring only a single step, but led to no detectable fusion-related enhancement of immunogenicity or quality of immune response.
机译:H5N1禽流感病毒血凝素(HA)分子的HA1抗原结构域的多肽变体使用瞬时和稳定的表达系统在植物中产生,并与His / c-myc标签或小鼠或人Fc抗体片段融合。纯化得到的肽并将其用于小鼠的肌内免疫。虽然重组HA1变体在小鼠中诱导了显着的血清体液免疫反应,但没有HA1制剂诱导病毒中和抗体。与Fc片段的融合提高了构建体的总产量,并且仅需一步即可进行纯化,但是没有导致可检测到的与融合相关的免疫原性或免疫应答质量的增强。

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