scholarly journals Deeplearning based MHC epitope prediction for cancer neoantigen discovery

2021 ◽  
Author(s):  
Carolyn Xie ◽  
Yu Shi ◽  
Chi Zhang

Neoantigens are important for cancer immunotherapies or cancer vaccine development, but identification of neoantigens is challenging. The high binding affinity between the mutated peptide and MHC (major histocompatibility complex) molecules of the patients is a necessary factor for a somatic mutation on the tumor genome to form a neoantigen. MHC epitope prediction tools can be used for the identification of neoantigens. This research investigates MHC epitope prediction by utilizing Tri-peptide similarity as features for the XGBoost classifier. This model was tested on experimentally validated cancer neoantigen peptides.

2000 ◽  
Vol 191 (5) ◽  
pp. 805-812 ◽  
Author(s):  
Reinhard Obst ◽  
Nikolai Netuschil ◽  
Karsten Klopfer ◽  
Stefan Stevanović ◽  
Hans-Georg Rammensee

By analyzing T cell responses against foreign major histocompatibility complex (MHC) molecules loaded with peptide libraries and defined self- and viral peptides, we demonstrate a profound influence of self-MHC molecules on the repertoire of alloreactive T cells: the closer the foreign MHC molecule is related to the T cell's MHC, the higher is the proportion of peptide-specific, alloreactive (“allorestricted”) T cells versus T cells recognizing the foreign MHC molecule without regard to the peptide in the groove. Thus, the peptide repertoire of alloreactive T cells must be influenced by self-MHC molecules during positive or negative thymic selection or peripheral survival, much like the repertoire of the self-restricted T cells. In consequence, allorestricted, peptide-specific T cells (that are of interest for clinical applications) are easier to obtain if T cells and target cells express related MHC molecules.


2014 ◽  
Vol 88 (6) ◽  
pp. 3298-3308 ◽  
Author(s):  
N. A. May ◽  
Q. Wang ◽  
A. Balbo ◽  
S. L. Konrad ◽  
R. Buchli ◽  
...  

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