ELIZA

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611425 occurrences (No.13 in the rank) during 5 years in the PubMed. [cache]

398) Thus, improved prime-boost regimens to increase bNAb potency and stimulate other immune protection mechanisms are essential for developing anti–HIV-1 vaccines.

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PMID:34818054 DOI:10.1126/scitranslmed.abk1533

2021 Science translational medicine

* Sequential immunization of macaques elicits heterologous neutralizing antibodies targeting the V3-glycan patch of HIV-1 Env.

- Broadly neutralizing antibodies (bNAbs) against HIV-1 develop after prolonged virus and antibody coevolution. Previous studies showed that sequential immunization with a V3-glycan patch germline-targeting HIV-1 envelope trimer (Env) followed by variant Envs can reproduce this process in mice carrying V3-glycan bNAb precursor B cells. However, eliciting bNAbs in animals with polyclonal antibody repertoires is more difficult. We used a V3-glycan immunogen multimerized on virus-like particles (VLPs), followed by boosting with increasingly native-like Env-VLPs, to elicit heterologous neutralizing antibodies in nonhuman primates (NHPs). Structures of antibody/Env complexes after prime and boost vaccinations demonstrated target epitope recognition with apparent maturation to accommodate glycans. However, we also observed increasing off-target antibodies with boosting. Eight vaccinated NHPs were subsequently challenged with simian-human immunodeficiency virus (SHIV), and seven of eight animals became infected. The single NHP that remained uninfected after viral challenge exhibited one of the lowest neutralization titers against the challenge virus. These results demonstrate that more potent heterologous neutralization resulting from sequential immunization is necessary for protection in this animal model. Thus, improved prime-boost regimens to increase bNAb potency and stimulate other immune protection mechanisms are essential for developing anti–HIV-1 vaccines.

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--- WordNet output for increase --- =>大きくなる, を増す, 増大させる, 強まる, 増加, 増える, 増やす Overview of noun increase The noun increase has 5 senses (first 5 from tagged texts) 1. (49) addition, increase, gain -- (a quantity that is added; "there was an addition to property taxes this year"; "they recorded the cattle's gain in weight over a period of weeks") 2. (21) increase -- (a change resulting in an increase; "the increase is scheduled for next month") 3. (7) increase, increment, growth -- (a process of becoming larger or longer or more numerous or more important; "the increase in unemployment"; "the growth of population") 4. (3) increase, increment -- (the amount by which something increases; "they proposed an increase of 15 percent in the fare") 5. (3) increase, step-up -- (the act of increasing something; "he gave me an increase in salary") Overview of verb increase The verb increase has 2 senses (first 2 from tagged texts) 1. (86) increase -- (become bigger or greater in amount; "The amount of work increased") 2. (61) increase -- (make bigger or more; "The boss finally increased her salary"; "The university increased the number of students it admitted") --- WordNet end ---