Deep generative models for T cell receptor protein sequences.

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ID: 37464
2019
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Abstract
Probabilistic models of adaptive immune repertoire sequence distributions can be used to infer the expansion of immune cells in response to stimulus, differentiate genetic from environmental factors that determine repertoire sharing, and evaluate the suitability of various target immune sequences for stimulation via vaccination. Classically, these models are defined in terms of a probabilistic V(D)J recombination model which is sometimes combined with a selection model. In this paper we take a different approach, fitting variational autoencoder (VAE) models parameterized by deep neural networks to T cell receptor (TCR) repertoires. We show that simple VAE models can perform accurate cohort frequency estimation, learn the rules of VDJ recombination, and generalize well to unseen sequences. Further, we demonstrate that VAE-like models can distinguish between real sequences and sequences generated according to a recombination-selection model, and that many characteristics of VAE-generated sequences are similar to those of real sequences.
Reference Key
davidsen2019deepelife Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Davidsen, Kristian;Olson, Branden J;DeWitt, William S;Feng, Jean;Harkins, Elias;Bradley, Philip;Matsen, Frederick A;
Journal eLife
Year 2019
DOI
10.7554/eLife.46935
URL
Keywords Keywords not found

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