肠道微生物组合的预测价值持续免疫原性后的两个剂量CoronaVac 疫苗
Ho-Yu Ng1, Yunshi Liao2, Ruiqi Zhang2
1School of Clinical Medicine, The University of Hong Kong, Hong Kong.
International journal of molecular sciences
|March 13, 2024
概括
肠道细菌如 Bacteroides uniformis 和 Bacteroides eggerthii 可能会延长 CoronaVac 疫苗的免疫力. 这些微生物和相关的代谢途径可能会影响COVID-19疫苗接种后的长期抗体反应.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 随着时间的推移,CoronaVac (COVID-19疫苗) 的免疫性会减弱.
- 肠道微生物群在调节疫苗疗效方面的作用仍然是积极研究的领域.
研究的目的:
- 调查肠道微生物组成与CoronaVac疫苗持续免疫性之间的关联.
- 为了确定特定的细菌物种和与长期抗体反应相关的代谢途径.
主要方法:
- 在香港对119名两剂量CoronaVac接种者的前性队列研究.
- 在基线和疫苗接种后180天测量中和抗体 (NAbs).
- 便样本的枪式元基因组测序以分析肠道微生物群和代谢途径.
主要成果:
- 在接种疫苗6个月后,只有6.7%的参与者保持了血清阳性.
- 在阳性病毒感染个体中,Bacteroides uniformis和Bacteroides eggerthii的含量显著增加.
- B. eggerthii的存在与更高的血清阳性概率相关 (OR:5.73).
- 丰富的代谢途径在血清阳性个体包括腺核酸生物合成和维生素B合成.
结论:
- 特定的肠道细菌,即B. eggerthii和B. uniformis,与持续的CoronaVac免疫性有关.
- 肠道微生物群的组成和相关的代谢功能可能在长期的疫苗反应中起作用.
- 对调节肠道微生物群的进一步研究可能会提高疫苗的有效性.
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