Fine specificity analysis of HLA B35-restricted Epstein-Barr virus (EBV)-specific cytotoxic T lymphocyte (CTL) clones revealed a unique heterogeneity whereby one group of these clones cross-recognized an EBV epitope (YPLHEQHGM) on virus-infected cells expressing either HLA B*3501 or HLA B*3503, while another group cross-recognized this epitope in association with either HLA B*3502 or HLA B*3503...

The one-bead one-peptide combinatorial library method represents a powerful approach to the discovery of binding peptides for various macromolecular targets. It involves the synthesis of millions of peptides on beads such that each bead displays only one peptide entity. The peptide-beads that interact with a specific macromolecular target are then isolated for structure determination. We have a...

PURPOSE Identification of tumor antigen and subsequent identification of T-cell epitope from these antigens make specific immunotherapy for malignant tumor applicable. Because TRAG-3 antigen is expressed in most melanomas and 54% of non-small cell lung carcinomas and HLA-A2.1-expressing individuals cover >50% in the population of China, we aim at identifying TRAG-3-encoded peptide presented by ...

Peptides that bind poorly to MHC class I molecules often elicit low-functional avidity T cell responses. Peptide modification by altering the anchor residue facilitates increased binding affinity and may elicit T cells with increased functional avidity toward the native epitope ("heteroclitic"). This augmented MHC binding is likely to increase the half-life and surface density of the heteroclit...

coprological analysis is still commonly employed to diagnose human fasciolosis despite the fact that this method is not utterly reliable. by far serologic methods in this case hold more validity and reliability. the purpose of the present study was to evaluate a 35-mer peptide covering a preliminary epitope of cathepsin l1, a new purified antigen of fasciola hepatica, by igg-elisa method for di...

<p><em>Zika virus infection attracted the attention of medical community since it is transmitted by Aedes mosquito and humans act as hosts. The disease affects fetal development causes severe neurodevelopmental disorders, such GBS (Guillain-Barre Syndrome), CZS (Congenital Zika Syndrome) in pregnant women, including congenital microcephaly, death. Therefore, a vaccine needed for pre...

MUC1 mucin is a breast cancer-associated transmembrane glycoprotein, of which the extracellular domain is formed by the repeating 20-amino acid sequence GVTSAPDTRPAPGSTAPPAH. In neoplastic breast tissue, the highly immunogenic sequence PDTRPAP (in bold above) is exposed. Antibodies raised directly against MUC1-expressing tumors offer unique access to this neoplastic state, as they represent imm...

Antibody-based affinity capture has become the gold standard in sample preparation for determination of low-abundance protein biomarkers biological matrices prior to liquid chromatography-mass spectrometry (LC-MS) determination. This comprises both intact proteins digestion step and proteolytic peptides after sample. The latter can be performed using antibodies specifically developed target pep...

The 70-kDa microbial heat shock protein (mHSP70) has a profound effect on the immune system, interacting with the CD40 receptor on DC and monocytes to produce cytokines and chemokines. The mHSP70 also induces maturation of dendritic cells (DC) and thus acts as an alternative ligand to CD40L on T cells. In this investigation, we have identified a cytokine-stimulating epitope (peptide 407-426), b...

Abstract Background The hemagglutinin-neuraminidase (HN) protein of Newcastle disease virus (NDV) is a major antigen that can induce protective antibodies in poultry. However, its antigenic epitopes have not been fully elucidated. Therefore, defining the linear HN, especially neutralizing epitopes, will be useful for revealing characterization. Methods In this study, we analyzed B-cell immunodo...