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增强对奥密克戎亚谱系的中和作用:二价和单价 COVID-19 加强疫苗以及最近 SARS-CoV-2 奥密克戎变异株感染的相关见解。

Enhancing Omicron Sublineage Neutralization: Insights From Bivalent and Monovalent COVID-19 Booster Vaccines and Recent SARS-CoV-2 Omicron Variant Infections.

机构信息

College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju, Republic of Korea.

Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Republic of Korea.

出版信息

Influenza Other Respir Viruses. 2024 Oct;18(10):e70000. doi: 10.1111/irv.70000.

DOI:10.1111/irv.70000
PMID:39377176
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11459205/
Abstract

BACKGROUND

Omicron variants have rapidly diversified into sublineages with mutations that enhance immune evasion, posing challenges for vaccination and antibody responses. This study aimed to compare serum cross-neutralizing antibody responses against various SARS-CoV-2 Omicron sublineages (BA.1, BA.5, XBB.1.17.1, FK.1.1, and JN.1) in recipients of monovalent COVID-19 boosters, bivalent booster recipients, and individuals who had recovered from Omicron BA.5 infections.

METHODS

We conducted a micro-neutralization assay on serum samples from monovalent BNT162b2 booster recipients (N = 54), bivalent BNT162b2 booster recipients (N = 24), and SARS-CoV-2 Omicron BA.5-recovered individuals (N = 13). The history of SARS-CoV-2 Omicron infection was assessed using ELISA against the SARS-CoV-2 NP protein.

RESULTS

Bivalent booster recipients exhibited significantly enhanced neutralization efficacy against Omicron sublineages compared to those who had received monovalent booster vaccinations. Omicron BA.5-recovered individuals displayed similar neutralizing antibodies (NAbs) to the bivalent booster recipients. Despite the improved neutralization in bivalent recipients and BA.5-recovered individuals, there were limitations in neutralization against the recently emerged Omicron subvariants: XBB.1.17.1 FK.1.1, and JN.1. In both monovalent and bivalent booster recipients, a history of Omicron breakthrough infection was associated with relatively higher geometric mean titers of NAbs against Omicron BA.1, BA.5, and XBB.1.17.1 variants.

CONCLUSION

This study underscores the intricate interplay between vaccination strategies, immune imprinting, and the dynamic landscape of SARS-CoV-2 variants. Although bivalent boosters enhance neutralization, addressing the challenge of emerging sublineages like XBB.1.17.1, FK.1.1, and JN.1 may necessitate the development of tailored vaccines, underscoring the need for ongoing adaptation to effectively combat this highly mutable virus.

摘要

背景

Omicron 变体迅速分化为具有增强免疫逃逸能力的亚谱系,这给疫苗接种和抗体反应带来了挑战。本研究旨在比较单价 COVID-19 加强针、双价加强针接种者和从 Omicron BA.5 感染中康复的个体血清对各种 SARS-CoV-2 Omicron 亚谱系(BA.1、BA.5、XBB.1.17.1、FK.1.1 和 JN.1)的交叉中和抗体反应。

方法

我们对 54 名接受单价 BNT162b2 加强针、24 名接受双价 BNT162b2 加强针和 13 名从 SARS-CoV-2 Omicron BA.5 感染中康复的个体的血清样本进行了微量中和测定。使用 ELISA 检测针对 SARS-CoV-2 NP 蛋白的 SARS-CoV-2 Omicron 感染史。

结果

与接受单价加强针接种者相比,双价加强针接种者对 Omicron 亚谱系的中和效力显著增强。Omicron BA.5 康复个体显示出与双价加强针接种者相似的中和抗体(NAb)。尽管双价接受者和 BA.5 康复个体的中和作用得到改善,但对最近出现的 Omicron 亚变体 XBB.1.17.1、FK.1.1 和 JN.1 的中和作用仍存在局限性。在单价和双价加强针接种者中,Omicron 突破感染史与针对 Omicron BA.1、BA.5 和 XBB.1.17.1 变体的 NAb 几何平均滴度较高相关。

结论

本研究强调了疫苗接种策略、免疫印迹和 SARS-CoV-2 变体动态景观之间的复杂相互作用。尽管双价加强针增强了中和作用,但应对像 XBB.1.17.1、FK.1.1 和 JN.1 等新兴亚谱系的挑战可能需要定制疫苗,这突显了不断适应以有效对抗这种高度变异病毒的必要性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9923/11459205/7e10c553231b/IRV-18-e70000-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9923/11459205/24e6581dba7a/IRV-18-e70000-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9923/11459205/dac320207a0c/IRV-18-e70000-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9923/11459205/a2af8c8412b3/IRV-18-e70000-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9923/11459205/7e10c553231b/IRV-18-e70000-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9923/11459205/24e6581dba7a/IRV-18-e70000-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9923/11459205/dac320207a0c/IRV-18-e70000-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9923/11459205/a2af8c8412b3/IRV-18-e70000-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9923/11459205/7e10c553231b/IRV-18-e70000-g004.jpg

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