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Related Concept Videos

Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Antigen Processing Pathways01:31

Antigen Processing Pathways

MHC molecules are key players in the immune response, enabling T cells to recognize and respond to specific antigens. They are present on the surface of all nucleated cells in the body and are instrumental in presenting antigens to T cells and activating them. T cells recognize the MHC-antigen complex and initiate an immune response. MHC class I and MHC class II are two main types of MHC molecules, each associated with a distinct antigen processing pathway.
MHC Class I: Presenting Endogenous...
Single Nucleotide Polymorphisms-SNPs01:05

Single Nucleotide Polymorphisms-SNPs

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
Cross-reactivity00:42

Cross-reactivity

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A High Throughput MHC II Binding Assay for Quantitative Analysis of Peptide Epitopes
07:59

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Published on: March 25, 2014

NetCTLpan: pan-specific MHC class I pathway epitope predictions.

Thomas Stranzl1, Mette Voldby Larsen, Claus Lundegaard

  • 1Department of Systems Biology DTU, Building 208, Center for Biological Sequence Analysis, Technical University of Denmark, Lyngby, 2800, Denmark. stranzl@cbs.dtu.dk

Immunogenetics
|April 10, 2010
PubMed
Summary
This summary is machine-generated.

NetCTLpan is a new predictor for identifying immunogenic peptides, crucial for vaccine design. This tool enhances epitope discovery efficiency by integrating multiple prediction steps, outperforming existing methods.

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Area of Science:

  • Immunology
  • Bioinformatics
  • Computational Biology

Background:

  • Accurate prediction of immunogenic peptides is vital for rational vaccine design.
  • Identifying T-cell epitopes efficiently reduces experimental workload.

Purpose of the Study:

  • To introduce NetCTLpan, a pan-specific major histocompatibility complex (MHC) class I epitope predictor.
  • To improve upon existing methods like NetCTL for predicting cytotoxic T lymphocyte (CTL) epitopes.

Main Methods:

  • NetCTLpan integrates predictions of proteasomal cleavage, transporter associated with antigen processing (TAP) transport, and MHC class I binding affinity.
  • The method generates a MHC class I pathway likelihood score and supports predictions for 8-11mer peptides across all known MHC class I molecules.
  • It was trained and validated on extensive datasets of experimentally identified MHC class I ligands and CTL epitopes.

Main Results:

  • NetCTLpan demonstrates superior predictive performance compared to state-of-the-art CTL epitope prediction methods.
  • The predictor achieves high specificity, minimizing false positives in epitope identification.
  • Utilizing NetCTLpan can reduce the experimental effort for identifying new epitopes by 15-40% compared to NetMHCpan and NetCTL.

Conclusions:

  • NetCTLpan offers a significant advancement in predicting MHC class I epitopes.
  • The method underscores the importance of comprehensive human leukocyte antigen (HLA) restriction information in epitope identification.
  • NetCTLpan provides a valuable tool for accelerating vaccine development and immunological research.