High yield production of norovirus GII.4 virus-like particles using silkworm pupae and evaluation of their protective immunogenicity

Akitsu Masuda, Jae Man Lee, Takeshi Miyata, Shintaro Sato, Atsushi Masuda, Masahiro Taniguchi, Ryosuke Fujita, Hiroshi Ushijima, Keisuke Morimoto, Takeru Ebihara, Masato Hino, Kohei Kakino, Hiroaki Mon, Takahiro Kusakabe

研究成果: ジャーナルへの寄稿学術誌査読

抄録

Noroviruses (NoVs) are one of the major causes of acute viral gastroenteritis in humans. Virus-like particles (VLPs) without genomes that mimic the capsid structure of viruses are promising vaccine candidates for the prevention of NoVs infection. To produce large amounts of recombinant protein, including VLPs, the silkworm-expression vector system (silkworm-BEVS) is an efficient and powerful tool. In this study, we constructed a recombinant baculovirus that expresses VP1 protein, the major structural protein of NoV GII.4. Expression analysis showed that the baculovirus-infected silkworm pupae expressed NoV VP1 protein more efficiently than silkworm larval fat bodies. We obtained about 4.9 mg of purified NoV VP1 protein from only five silkworm pupae. The purified VP1 protein was confirmed by dynamic light scattering and electron microscopy to form VLPs of approximately 40 nm in diameter. Antisera from mice immunized with the antigen blocked NoV VLPs binding to histo-blood group antigens of pig gastric mucin and also blocked NoV infection in intestinal epithelial cells derived from human induced pluripotent stem (iPS) cells. Our findings demonstrated that NoV VLP eliciting protective antibodies could be obtained in milligram quantities from a few silkworm pupae using the silkworm-BEVS.

本文言語英語
ページ(範囲)766-777
ページ数12
ジャーナルVaccine
41
3
DOI
出版ステータス出版済み - 1月 16 2023

!!!All Science Journal Classification (ASJC) codes

  • 分子医療
  • 免疫学および微生物学一般
  • 獣医学一般
  • 公衆衛生学、環境および労働衛生
  • 感染症

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