Rational Design of DNA-Expressed Stabilized Native-Like HIV-1 Envelope Trimers.
Rational Design of DNA-Expressed Stabilized Native-Like HIV-1 Envelope Trimers.
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DOI:
10.1016/j.celrep.2018.08.051
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发表时间:
2018-09-18
期刊:
影响因子:
8.8
通讯作者:
Shattock RJ
中科院分区:
文献类型:
--
作者:
Aldon Y;McKay PF;Allen J;Ozorowski G;Felfödiné Lévai R;Tolazzi M;Rogers P;He L;de Val N;Fábián K;Scarlatti G;Zhu J;Ward AB;Crispin M;Shattock RJ
The HIV-1-envelope glycoprotein (Env) is the main target of antigen design for antibody-based prophylactic vaccines. The generation of broadly neutralizing antibodies (bNAb) likely requires the appropriate presentation of stabilized trimers preventing exposure of non-neutralizing antibody (nNAb) epitopes. We designed a series of membrane-bound Envs with increased trimer stability through the introduction of key stabilization mutations. We derived a stabilized HIV-1 trimer, ConSOSL.UFO.750, which displays a dramatic reduction in nNAb binding while maintaining high quaternary and MPER-specific bNAb binding. Its soluble counterpart, ConSOSL.UFO.664, displays similar antigenicity, and its native-like Env structure is confirmed by negative stain-EM and glycosylation profiling of the soluble ConSOSL.UFO.664 trimer. A rabbit immunization study demonstrated that the ConSOSL.UFO.664 can induce autologous tier 2 neutralization. We have successfully designed a stabilized native-like Env trimer amenable to nucleic acid or viral vector-based vaccination strategies. DNA-expressed closed pre-fusion native-like Env with preserved MPER exposure Env antigenicity varies across cell types and assays Muscle cells present properly folded and glycosylated membrane-bound Envs Fully glycosylated ConSOSL.UFO.664 induces autologous tier 2 neutralization Aldon et al. developed membrane-bound and soluble stabilized HIV-1 Env trimer immunogens suitable for DNA/RNA or viral vector vaccines. The sequential iterative design and analysis in muscle cells have the potential to be used as a generalizable method for the expression of stabilized native-like trimers.
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影响因子:
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发表时间:
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影响因子:
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de Taeye SW;Ozorowski G;Torrents de la Peña A;Guttman M;Julien JP;van den Kerkhof TL;Burger JA;Pritchard LK;Pugach P;Yasmeen A;Crampton J;Hu J;Bontjer I;Torres JL;Arendt H;DeStefano J;Koff WC;Schuitemaker H;Eggink D;Berkhout B;Dean H;LaBranche C;Crotty S;Crispin M;Montefiori DC;Klasse PJ;Lee KK;Moore JP;Wilson IA;Ward AB;Sanders RW
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