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光条纹细胞系稳定表达膜固的流感神经aminidases

Joel Finney¹, Masayuki Kuraoka², Shengli Song³

¹Laboratory of Molecular Medicine, Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.

bioRxiv : the preprint server for biology

|January 13, 2025

概括

开发表达流感神经胺酶 (NA) 的新型细胞系有助于研究抗NA免疫力和疫苗疗效. 这些工具促进了高通量抗体分析,克服了传统重组NA蛋白的挑战.

科学领域:

病毒学病毒学
免疫学免疫学免疫学
疫苗开发疫苗开发

背景情况:

针对流感神经aminidase (NA) 的广泛保护性抗体突显了其疫苗潜力.
在表达和分离重组NAectodomains方面的挑战阻碍了对抗NA幽默反应的研究.

研究的目的:

开发一种新的系统来研究抗NA免疫力和评估流感疫苗的疗效.
克服与重组NA蛋白表达和分离相关的局限性.

主要方法:

在细胞表面稳定表达原生N1,N2,N3,N9和NBNA的22个非粘附细胞系.
利用光蛋白条形编码进行高通量,通过流细胞计进行16个复合体抗体结合分析.
评估了嵌入膜的NAs的催化活性及其与小分子测试的兼容性.

主要成果:

细胞系有效地从人类记忆B细胞IgG中识别了NA抗体,与Luminex试验相似.
膜定NAs显示了催化活性和与现有测试的兼容性.
该系统能够对与各种NA亚型结合的抗体进行强大,高通量分析.

结论:

表达NA的K530细胞系为推进流感NA免疫研究提供了宝贵的工具.
这个平台有助于研究针对各种NA亚型的幽默反应.
开发的细胞系有助于评估针对神经aminidase的流感疫苗有效性.

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