Journal
MOLECULAR SYSTEMS BIOLOGY
Volume 16, Issue 8, Pages -Publisher
WILEY
DOI: 10.15252/msb.20199416
Keywords
antigen specificity; multimodal; single cell; supervised learning; T-cell receptors
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Funding
- German Research Foundation (DFG) fellowship through the Graduate School of Quantitative Biosciences Munich (QBM) [GSC 1006]
- Joachim Herz Stiftung
- Postdoctoral Fellowship Program of the Helmholtz Zentrum Munchen
- Graduate School QBM, the German Research Foundation (DFG) within the Collaborative Research Centre 1243
- Helmholtz Association [ZT-I-0007]
- BMBF [01IS18036A, 01IS18053A]
- Chan Zuckerberg Initiative DAF (Silicon Valley Community Foundation) [182835]
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It has recently become possible to simultaneously assay T-cell specificity with respect to large sets of antigens and the T-cell receptor sequence in high-throughput single-cell experiments. Leveraging this new type of data, we propose and benchmark a collection of deep learning architectures to model T-cell specificity in single cells. In agreement with previous results, we found that models that treat antigens as categorical outcome variables outperform those that model theTCRand antigen sequence jointly. Moreover, we show that variability in single-cell immune repertoire screens can be mitigated by modeling cell-specific covariates. Lastly, we demonstrate that the number of boundpMHCcomplexes can be predicted in a continuous fashion providing a gateway to disentangle cell-to-dextramer binding strength and receptor-to-pMHCaffinity. We provide these models in the Python package TcellMatch to allow imputation of antigen specificities in single-cellRNA-seq studies on T cells without the need forMHCstaining.
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