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apoferritin nanoparticle based dual-antigen influenza conjugate vaccine with potential cross-protective efficacy against heterosubtypic influenza virus

引用

Particuology 2022年第5期20卷 56-64页

作者： Yanan Sheng Jiangxue Wei Zhengjun Li Zhiguo Su Guanghui Ma Songping Zhang State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Ferritin nanoparticles with self-assembling properties have been widely explored as vaccine carrier by displaying foreign antigens through genetic fusion *** the present work,an apoferritin(AFt)nanoparticle was tested as influenza vaccine carrier by chemically conjugating a matrix protein 2 ectodomain(M2e)antigen peptide or/and the full-length hemagglutinin(HA)antigen on the outer surface of the AFt,with heterobifunctional sSMCC or SM(PEG)_(24) containing PEG chain as *** each AFt nanoparticle,about 30-32 M2e or 1.8 HA antigen could be *** AFt-(PEG)24-M2e,in which the M2e was coupled through SM(PEG)_(24) containing PEG chain,conferred higher protective efficacy in immunized mice than AFt-M2e did,but was less effective than AFt-(PEG)_(24)-*** both M2e and HA were coupled,the synthesized dual-antigen vaccine candidate AFt-(PEG)_(24)-M2e/HA elicited high level of M2e and HA antigen-specific antibodies and conferred 100%protection against lethal infection of homologous PR8 HI N1 virus strain and 70%protection against a heterologous A/FM/1/47(FM1,H1N1)strain,which was more effective than the M2e or HA single antigen vaccine *** potential cross-protective effect of the dual-antigen vaccine was further demonstrated by significant specific hemagglutination inhibition(HAI)titers in serum of the immunized mice against three other heterologous viral strains including A/Singapore/GPl908/2015(IVR-180)H1N1,A/Anhui/1/2005 H5N1,and A/Hong Kong H3N2.

关键词： Influenza vaccine apoferritin nanoparticle Hemagglutinin M2e Conjugate vaccine

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