A potent and durable malaria transmission-blocking vaccine designed from a single-component 60-copy Pfs230D1 nanoparticle.

A potent and durable malaria transmission-blocking vaccine designed from a single-component 60-copy Pfs230D1 nanoparticle.
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DOI:
10.1038/s41541-023-00709-8
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发表时间:
2023-08-18
期刊:
影响因子:
9.2
通讯作者:
Tolia, Niraj H.
Tolia, Niraj H.
中科院分区:
医学1区
文献类型:
--
作者:
Salinas, Nichole D.;Ma, Rui;Dickey, Thayne H.;McAleese, Holly;Ouahes, Tarik;Long, Carole A.;Miura, Kazutoyo;Lambert, Lynn E.;Tolia, Niraj H.

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疟疾传播阻断疫苗(TBV)通过打破人类宿主和蚊媒之间的连续感染循环来减少疾病传播。 Pfs230 的结构域 1 (D1) 是主要的 TBV 候选者,包含 Pfs230 引发的大部分传输减少活性 (TRA)。在这里,我们展示了 Pfs230D1 与二氢硫辛酰乙酰转移酶蛋白 (E2p) 催化结构域的 60 拷贝多聚体的融合,产生了由 60 拷贝融合蛋白组成的单组分纳米颗粒,具有高稳定性、均一性和产率。纳米颗粒在 Pfs230D1 内呈现出有效的人类传播阻断表位,表明抗原在纳米颗粒表面上正确定位。当将 Pfs230D1 纳米颗粒配制在两种适合人类使用的不同佐剂中时,新西兰白兔两次接种 Pfs230D1 纳米颗粒,引发了有效且持久的高 TRA 抗体反应。这种单组分纳米颗粒疫苗可能在疟疾控制中发挥关键作用,并有可能改善生产管道并降低有效且持久的 TBV 的制造成本。
Malaria transmission-blocking vaccines (TBVs) reduce disease transmission by breaking the continuous cycle of infection between the human host and the mosquito vector. Domain 1 (D1) of Pfs230 is a leading TBV candidate and comprises the majority of transmission-reducing activity (TRA) elicited by Pfs230. Here we show that the fusion of Pfs230D1 to a 60-copy multimer of the catalytic domain of dihydrolipoyl acetyltransferase protein (E2p) results in a single-component nanoparticle composed of 60 copies of the fusion protein with high stability, homogeneity, and production yields. The nanoparticle presents a potent human transmission-blocking epitope within Pfs230D1, indicating the antigen is correctly oriented on the surface of the nanoparticle. Two vaccinations of New Zealand White rabbits with the Pfs230D1 nanoparticle elicited a potent and durable antibody response with high TRA when formulated in two distinct adjuvants suitable for translation to human use. This single-component nanoparticle vaccine may play a key role in malaria control and has the potential to improve production pipelines and the cost of manufacturing of a potent and durable TBV.
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影响因子: 7.3
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