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A novel platform for virus-like particle-display of flaviviral envelope domain III: induction of Dengue and West Nile virus neutralizing antibodies
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  • 作者:Anthony JS Chua (1) (2)
    Cyrielle Vituret (3) (4)
    Melvin LC Tan (1)
    Ga?lle Gonzalez (3) (4)
    Pierre Boulanger (3)
    Mah-Lee Ng (1) (2) (5)
    Saw-See Hong (3) (4) (6)
  • 关键词:Flavivirus envelope glycoprotein ; Domain III ; Retroviral Gag ; Virus ; like particles (VLPs) ; Pseudotyping ; VLP ; display ; CD16/Fc?RIγ chimera ; Recombinant baculovirus
  • 刊名:Virology Journal
  • 出版年:2013
  • 出版时间:December 2013
  • 年:2013
  • 卷:10
  • 期:1
  • 全文大小:1768KB
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  • 作者单位:Anthony JS Chua (1) (2)
    Cyrielle Vituret (3) (4)
    Melvin LC Tan (1)
    Ga?lle Gonzalez (3) (4)
    Pierre Boulanger (3)
    Mah-Lee Ng (1) (2) (5)
    Saw-See Hong (3) (4) (6)

    1. Flavivirology Laboratory, Department of Microbiology, National University of Singapore, 5 Science Drive 2, Singapore, 117597, Singapore
    2. NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, 28 Medical Drive, Singapore, 117456, Singapore
    3. University Lyon I & UMS-3444 Biosciences Gerland-Lyon Sud, 50, avenue Tony Garnier, Lyon, 69366, France
    4. Retroviruses and Comparative Pathology, Université Lyon I & INRA UMR-754, 50, avenue Tony Garnier, Lyon Cedex 07, 69366, France
    5. Flavivirology Laboratory, Department of Microbiology, National University Health System, 1E, Kent Ridge Road, Singapore, 119228, Singapore
    6. Institut National de la Santé et de la Recherche Médicale, 101, rue de Tolbiac, Paris, 75013, France
  • ISSN:1743-422X
文摘
CD16-RIgE is a chimeric human membrane glycoprotein consisting of the CD16 ectodomain fused to the transmembrane domain and cytoplasmic tail of the gamma chain of the high affinity receptor of IgE (RIgE). Coexpression of CD16-RIgE and HIV-1 Pr55Gag polyprotein precursor (Pr55GagHIV) in insect cells resulted in the incorporation of CD16-RIgE glycoprotein into the envelope of extracellular virus-like particles (VLPs), a phenomenon known as pseudotyping. Taking advantage of this property, we replaced the CD16 ectodomain of CD16-RIgE by the envelope glycoprotein domain III (DIII) of dengue virus serotype 1 (DENV1) or West Nile virus Kunjin (WNVKun). The two resulting chimeric proteins, DIII-DENV1-RIgE and DIII-WNVKun-RIgE, were addressed to the plasma membrane, exposed at the surface of human and insect cells, and incorporated into extracellular VLPs when coexpressed with Pr55GagHIV in insect cells. The DIII domains were accessible at the surface of retroviral VLPs, as shown by their reactivity with specific antibodies, and notably antibodies from patient sera. The DIII-RIgE proteins were found to be incorporated in VLPs made of SIV, MLV, or chimeric MLV-HIV Gag precursors, indicating that DIII-RIgE could pseudotype a wide variety of retroviral VLPs. VLP-displayed DIII were capable of inducing specific neutralizing antibodies against DENV and WNV in mice. Although the neutralization response was modest, our data confirmed the capability of DIII to induce a flavivirus neutralization response, and suggested that our VLP-displayed CD16-RIgE-based platform could be developed as a vaccine vector against different flaviviruses and other viral pathogens.

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