跨MHCII:一种使用蛋白语言模型和图像分类器构建的新型MHC-II结合预测模型
Xin Yu1, Christopher Negron1, Lili Huang1
1Biotherapeutics Discovery, AbbVie Bioresearch Center, 100 Research Drive, Worcester, MA 01605, USA.
Antibody therapeutics
|June 21, 2023
概括
我们开发了TransMHCII,这是一种使用蛋白质语言模型和图像分类器的新型深度学习模型,用于预测主要基因相容性复合物II类 (MHC-II) 结合亲和力,其性能优于现有方法.
科学领域:
- 计算生物学是一种计算生物学.
- 生物信息学是一种生物信息学.
- 机器学习在免疫学中的应用
背景情况:
- 像AlphaFold2这样的深度学习模型具有先进的蛋白质结构预测.
- 从蛋白质结构中预测生物特性仍然是一个挑战.
- 主体组织相容性复合物II类 (MHC-II) 的结合亲和力对免疫反应至关重要.
研究的目的:
- 开发一种新的深度学习方法来预测-MHC-II结合亲和力.
- 通过将蛋白质语言模型与图像分类架构集成来探索转移学习方法.
- 评估拟议模型的性能与已建立的预测工具相比.
主要方法:
- 从蛋白质语言模型 (PLM) 中提取的特征,包括ESM1b,ProtXLNet和ProtT5-XL-UniRef.
- 利用像EfficientNet和Vision Transformer (ViT-16) 这样的图像分类模型作为背骨.
- 通过将PLM功能与图像模型架构结合起来,实现了转移学习策略.
- 在-MHC-II结合亲缘关系数据上训练并验证了最终的模型,命名为TransMHCII.
主要成果:
- PLM和图像分类器的最佳配对导致了TransMHCII模型.
- 与NetMHCIIpan 3.2和NetMHCIIpan 4.0-BA相比,TransMHCII表现出更高的性能. 这是一个很好的例子.
- 在各个指标中观察到性能改善,包括接收器运行特征曲线下面的区域,平衡精度和Jaccard分数.
结论:
- 整合PLM和图像分类器的新型架构对预测MHC-II结合亲和力有效.
- 这种方法为开发复杂生物问题的深度学习模型提供了一个有希望的方向.
- TransMHCII在免疫信息学和-MHC结合预测领域取得了进展.
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