Antigen NY-CO-13 (264-272)

Antigen NY-CO-13 (264-272) is a synthetic peptide fragment derived from the NY-CO-13 protein, a cancer-testis antigen recognized for its restricted expression in normal tissues and aberrant presence in various malignancies. As a defined peptide epitope, it represents amino acid residues 264 to 272 of the parent antigen, enabling precise interrogation of antigen-specific immune responses. Its unique sequence and immunological relevance have positioned it as a valuable research tool in tumor immunology, neoantigen discovery, and peptide-based assay development. The sequence-specific properties of this peptide facilitate controlled studies of antigen presentation, T-cell recognition, and biomarker validation, supporting a range of advanced biochemical and immunological investigations.

Immunological Assays: The defined sequence of the NY-CO-13 (264-272) peptide is particularly suited for use in immunological assays such as ELISPOT, tetramer staining, and cytotoxic T lymphocyte (CTL) activation studies. By serving as a representative epitope, it enables the detection and quantification of antigen-specific T-cell populations in peripheral blood mononuclear cells or tumor infiltrates. Researchers rely on this peptide to map immune responses against the NY-CO-13 antigen, assess T-cell repertoire diversity, and evaluate immunogenicity in preclinical models, providing critical insights into tumor-specific immunity.

Epitope Mapping: The peptide's precise amino acid composition allows for systematic epitope mapping, a process essential for identifying the minimal recognition sequences required for T-cell receptor engagement. By incorporating this fragment into peptide libraries or overlapping peptide pools, investigators can delineate the boundaries of immunodominant regions within the NY-CO-13 antigen. Such studies are fundamental for elucidating mechanisms of immune recognition, optimizing neoantigen prediction algorithms, and informing the design of next-generation immunotherapeutic strategies.

Antigen Presentation Studies: Use of the NY-CO-13 (264-272) peptide in antigen presentation assays enables detailed analysis of peptide-MHC binding and processing. Researchers employ this fragment to load antigen-presenting cells, such as dendritic cells or artificial antigen-presenting systems, to investigate peptide affinity, stability, and presentation efficiency on MHC class I molecules. These experiments are instrumental in understanding determinants of immunogenicity, validating predicted epitopes, and characterizing the molecular interactions that govern immune surveillance in cancer.

Peptide Synthesis and Modification: The synthetic nature of this peptide fragment makes it an ideal substrate for studies involving peptide modification, conjugation, or structure-activity relationship (SAR) analysis. By introducing chemical modifications or labeling moieties, scientists can probe the effects of sequence alterations on immunogenicity, stability, and cellular uptake. This flexibility supports the development of peptide-based probes, affinity reagents, or tailored immunogens for use in basic research and translational applications.

Biomarker Validation: The NY-CO-13 (264-272) peptide serves as a reference standard in biomarker validation workflows, particularly in the context of cancer immunology. Its defined sequence and immunological relevance make it suitable for use in assay calibration, quality control, and the benchmarking of immune monitoring platforms. By providing a consistent and reproducible analyte, it facilitates the standardization of experimental protocols and supports the generation of robust, comparable data across laboratories engaged in tumor antigen research.

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