OVA Peptide (323-339) represents a T and B cell epitope of Ovalbumin (Ova), which is important in the generation and development of immediate hypersensitivity responses in BALB/c mice.
CAT No: R1584
OVA Peptide 323-339 is a synthetic peptide fragment derived from ovalbumin, corresponding to amino acid residues 323 through 339 of the protein. As a well-characterized epitope, it is highly valued in immunological research, particularly for its role in studies involving antigen processing, presentation, and T-cell activation. The peptide's defined sequence and immunodominant properties make it an essential tool for dissecting the mechanisms underlying major histocompatibility complex (MHC) class II-restricted immune responses. Its use extends across a variety of experimental systems, serving as a model antigen in both in vitro and in vivo settings to advance the understanding of adaptive immunity.
Antigen-specific T-cell activation: OVA Peptide 323-339 is extensively employed to stimulate CD4+ T cells in immunological assays. By presenting this peptide in the context of MHC class II molecules on antigen-presenting cells, researchers can reliably induce and monitor antigen-specific T-cell proliferation, cytokine production, and differentiation. This application is fundamental to elucidating the cellular and molecular mechanisms of T-cell receptor recognition, signal transduction, and immune synapse formation, thereby supporting detailed investigations into immune modulation and tolerance.
Vaccine development research: The peptide serves as a prototypical model antigen in preclinical studies aimed at evaluating vaccine adjuvants, delivery systems, and immunization strategies. Its predictable immunogenicity allows for the assessment of novel vaccine formulations, adjuvant efficacy, and the optimization of antigen presentation pathways. By tracking the immune response to this defined epitope, investigators can systematically compare the potency and quality of candidate vaccine platforms in a controlled, reproducible manner.
Autoimmunity and tolerance studies: OVA Peptide 323-339 is utilized in experimental models to investigate mechanisms of peripheral and central tolerance, as well as to model autoimmune responses. By introducing the peptide into transgenic or wild-type animal models, researchers can analyze the induction of regulatory T cells, deletion or anergy of autoreactive T cells, and the factors that contribute to the breakdown or maintenance of self-tolerance. These studies are crucial for advancing the understanding of immune regulation and the pathogenesis of autoimmune diseases.
Adoptive cell transfer experiments: The peptide is integral to protocols involving the adoptive transfer of OVA-specific T cells, such as those derived from OT-II transgenic mice. By using this defined sequence to selectively activate and expand antigen-specific T-cell populations ex vivo, researchers can subsequently transfer these cells into recipient animals to study immune dynamics, cell trafficking, and effector functions in vivo. This approach facilitates precise dissection of T-cell-mediated immunity and the evaluation of immunotherapeutic strategies.
Peptide-MHC binding and structural analysis: OVA Peptide 323-339 provides a reliable substrate for examining peptide binding to MHC class II molecules, as well as for structural studies of peptide-MHC-TCR complexes. Its use in crystallography, affinity measurements, and computational modeling enables detailed characterization of the molecular interactions that govern antigen recognition. Insights gained from these analyses inform the design of peptide-based immunomodulators and contribute to the broader field of structural immunology.
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