在不同的植物组织中鉴定出来自麻的新冠1异敏原的过敏性和结构性质
Julian M Hendrich1, Andreas Reuter2, Thessa P Jacob1
1Lehrstuhl Biochemie IV - Biophysikalische Chemie, Universität Bayreuth, Universitätsstrasse 30, 95447, Bayreuth, Germany.
Scientific reports
|March 7, 2024
概括
草过敏原Cor a 1,一种PR-10蛋白质,在各种组织中发现了新的变体. 这些新型异敏原被过敏患者的血清识别,影响了对虫过敏的理解.
科学领域:
- 植物分子生物学 植物分子生物学
- 过敏原研究研究
- 免疫学 免疫学 免疫学
背景情况:
- 科拉1是一种草过敏原,是一种与树过敏原Bet v 1相关的PR-10蛋白.
- 草过敏通常源于对Bet v 1的交叉反应性抗体.
- 像Cor a 1这样的PR-10蛋白质的精确功能和植物定位尚未得到充分理解.
研究的目的:
- 为了调查Cora 1mRNA和蛋白质在各种草组织中的存在和局部.
- 发现和描述新型Cor a 1异敏原和变种.
- 评估新发现的Cor a 1蛋白质的过敏性潜力.
主要方法:
- 在花的雌性花,坚果,和花粉中分析Cor a 1 mRNA和蛋白质表达.
- 发现和描述新的Cor a 1异敏原 (Cor a 1.0501-1.0801) 和一个变种 (Cor a 1.03).
- 在大肠杆菌中表达Cor a 1基因,随后使用CD和NMR光谱进行蛋白质净化和分析.
- 使用患者血清进行免疫和ELISA测定以确定过敏原潜力.
主要成果:
- 确定并描述了四种新的Cor a 1异敏原 (Cor a 1.0501-1.0801) 和一种新的变种 (Cor a 1.03).
- 在各种花组织 (花,坚果,,花粉) 中观察到Cor a 1 mRNA和蛋白质的不同表达模式.
- 以前只在坚果中发现的Cor a 1.04,也在和花粉中检测到.
- 纯化新型Cor a 1蛋白与患者的血清产生了积极反应,这些患者对树,子和老人花粉过敏.
- 这些新发现的蛋白质被世界卫生组织/IUIS过敏原命名分委员会认定为新型异敏原/变异.
结论:
- 这项研究确定了新型Cor a 1异敏原和在中具有明显组织表达模式的变体.
- 这些发现表明,CORa1蛋白在草植物中扮演着不同的角色.
- 新描述的Cor a 1蛋白质具有显著的过敏原潜力,患者血清活性证实了这一点.
- 这项研究提高了对子过敏机制的理解,并为诊断和免疫治疗确定了新的点.
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