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Transient Kinetic Proofreading

Iyengar, G.; Perry, M.

2021-03-12 immunology
10.1101/2021.03.10.434642 bioRxiv
Show abstract

We propose a new stochastic model for understanding the transient kinetic proofreading mechanism in a T-cell. Our model indicates that a stochastic version of absolute ligand discrimination is a consequence of the finite number of receptors on the cell surface; thus, pointing to receptor number control as being critical to T-cell activation. We propose four different metrics to characterize the performance of kinetic proofreading mechanisms. We explore the numerical experiments that explore the trade-offs between speed, specificity, sensitivity, and robustness of T-cell activation as a function of the model parameters. We also consider the impact of receptor clustering on these trade-offs.

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