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在Saccharomyces boulardii中用于模拟肠液中蛋白质吸收的功能表面显示系统
Zachary J Waldrip1,2, Lyle Burdine2, Eric C Peterson3
1Arkansas Children's Research Institute, Little Rock, AR 72202, USA.
iScience
|September 2, 2025
概括
工程化益生菌酵母可以在其表面显示功能性抗体,针对胃肠道疾病. 这些以酵母为基础的疗法在模拟肠道环境中具有结合低抗原度的潜力.
科学领域:
- 微生物学
- 生物技术
- 胃肠病学
背景情况:
- 工程微生物为新的胃肠道 (GI) 疗法提供了潜力.
- 益生菌酵母,如Saccharomyces boulardii,是治疗开发的合适平台.
- 蛋白质表面显示方法可以适应微生物工程.
研究的目的:
- 研究使用Saccharomyces boulardii在细胞表面显示功能性抗体的可行性.
- 在模拟的胃肠道环境中评估细胞壁结合抗体的性能.
主要方法:
- 在Saccharomyces boulardii的辅食菌株上使用已确定的蛋白质表面显示技术.
- 在生理温度下的模拟结肠液中培养工程酵母.
- 使用敏感检测方法评估抗体与向抗原的结合.
主要成果:
- 成功表达的功能抗体与Saccharomyces boulardii的表面结合在一起.
- 在模拟的胃肠道条件下 (生理温度,结肠液) 证明细胞壁绑定抗体与抗体结合.
- 证实对亚纳米抗原度的敏感性,表明在低目标水平下具有潜在的疗效.
结论:
- 可以对Saccharomyces boulardii进行基因工程,使其表面显示功能抗体,用于消化道应用.
- 细胞壁显示的抗体在模拟的胃肠环境中保持结合活性.
- 这种方法有望开发针对性益生菌疗法,用于涉及低度肠道抗原的疾病.
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