South African Medical Research Council self-initiated research grant (SAMRC SIR Grant)
南アフリカ
Chan Zuckerberg Initiative
2021-240494
米国
引用
ジャーナル: Vaccines (Basel) / 年: 2024 タイトル: Development of a Two-Component Nanoparticle Vaccine Displaying an HIV-1 Envelope Glycoprotein that Elicits Tier 2 Neutralising Antibodies. 著者: Kegomoditswe Malebo / Jeremy Woodward / Phindile Ximba / Qiniso Mkhize / Sanele Cingo / Thandeka Moyo-Gwete / Penny L Moore / Anna-Lise Williamson / Rosamund Chapman / 要旨: Despite treatment and other interventions, an effective prophylactic HIV vaccine is still an essential goal in the control of HIV. Inducing robust and long-lasting antibody responses is one of the ...Despite treatment and other interventions, an effective prophylactic HIV vaccine is still an essential goal in the control of HIV. Inducing robust and long-lasting antibody responses is one of the main targets of an HIV vaccine. The delivery of HIV envelope glycoproteins (Env) using nanoparticle (NP) platforms has been shown to elicit better immunogenicity than soluble HIV Env. In this paper, we describe the development of a nanoparticle-based vaccine decorated with HIV Env using the SpyCatcher/SpyTag system. The Env utilised in this study, CAP255, was derived from a transmitted founder virus isolated from a patient who developed broadly neutralising antibodies. Negative stain and cryo-electron microscopy analyses confirmed the assembly and stability of the mi3 into uniform icosahedral NPs surrounded by regularly spaced CAP255 gp140 Env trimers. A three-dimensional reconstruction of CAP255 gp140 SpyTag-SpyCatcher mi3 clearly showed Env trimers projecting from the centre of each of the pentagonal dodecahedral faces of the NP. To our knowledge, this is the first study to report the formation of SpyCatcher pentamers on the dodecahedral faces of mi3 NPs. To investigate the immunogenicity, rabbits were primed with two doses of DNA vaccines expressing the CAP255 gp150 and a mosaic subtype C Gag and boosted with three doses of the NP-developed autologous Tier 2 CAP255 neutralising antibodies (Nabs) and low levels of heterologous CAP256SU NAbs.
分子量: 33894.777 Da / 分子数: 60 / 由来タイプ: 組換発現 詳細: Model just contains mi3 cage component of NP. Note that SpyCatcher and gp140 are not included in the model.,Model just contains mi3 cage component of NP. Note that SpyCatcher and gp140 are ...詳細: Model just contains mi3 cage component of NP. Note that SpyCatcher and gp140 are not included in the model.,Model just contains mi3 cage component of NP. Note that SpyCatcher and gp140 are not included in the model.,Model just contains mi3 cage component of NP. Note that SpyCatcher and gp140 are not included in the model.,Model just contains mi3 cage component of NP. Note that SpyCatcher and gp140 are not included in the model. 由来: (組換発現) Thermotoga maritima (バクテリア) 遺伝子: TM_0066 / 発現宿主: Escherichia coli BL21 (大腸菌) 参照: UniProt: Q9WXS1, 2-dehydro-3-deoxy-phosphogluconate aldolase
Has protein modification
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実験情報
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実験
実験
手法: 電子顕微鏡法
EM実験
試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法
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試料調製
構成要素
名称: CAP255 gp140 SpyTag-SpyCatcher mi3 nanoparticle / タイプ: COMPLEX 詳細: CAP255 gp140 SpyTag was expressed in HEK293T cells and purified. SpyCatcher mi3 was expressed in Entity ID: all / 由来: RECOMBINANT