Price Trends,methods to monitor antigen presentation

The SIINFEKL peptide, a well-defined epitope derived from ovalbumin (OVA), stands as a cornerstone in fundamental immunological studies, particularly in the realm of antigen presentation and T cell activation. Its significance is amplified by its specific binding to the MHC Class I molecule H-2Kb, making it an invaluable tool for researchers investigating cellular immunity. This article delves into the properties, applications, and scientific importance of the SIINFEKL peptide, drawing upon extensive research and the availability of high-quality reagents from trusted suppliers like InvivoGen.

At its core, the SIINFEKL peptide is an octameric sequence originating from the ovalbumin protein (Uniprot P01012). Specifically, it represents the OVA 257-264 fragment, a Class I (Kb)-restricted peptide epitope that is naturally processed and presented by antigen-presenting cells (APCs). This precise presentation on the cell surface via MHC Class I molecules is crucial for the recognition and activation of CD8+ T cells, a critical component of the adaptive immune response.

The utility of SIINFEKL in scientific applications is vast and well-documented. It is routinely used to stimulate T cells in PBMCs (peripheral blood mononuclear cells) and to quantify peptide epitope specificity and IFN-γ releasing effector cells by ELISPOT assays. This capability allows researchers to precisely measure immune responses directed against this specific antigen. Furthermore, the SIINFEKL peptide is instrumental in evaluating the efficacy of new vaccine adjuvants and in developing cancer research and vaccine development strategies. Its well-characterized immunogenic properties make it a reliable model peptide for these advanced studies.

A key aspect of the SIINFEKL peptide's application lies in its interaction with specific antibodies. Monoclonal antibodies, such as the 25-D1.16 antibody, are designed to react specifically with the SIINFEKL peptide bound to H-2Kb of MHC Class I. This targeted binding, and importantly, the lack of reaction with unbound H-2Kb, allows for precise detection and quantification of antigen-MHC complexes. These antibodies find utility in various scientific applications, including Flow Cytometry and Immunohistochemistry, enabling researchers to track the quantity and localization of these specific antigen-presenting cells (APCs) in vivo. The availability of Anti-SIINFEKL Antibodies and Anti-H2-K1-peptide (SIINFEKL) Complex Monoclonal Antibodies from reputable manufacturers further underscores the peptide's importance.

The SIINFEKL peptide serves as a standard in numerous immunological models. For instance, it is widely utilized in fundamental studies of antigen processing and presentation by antigen-presenting cells. It is also employed in methods to monitor antigen presentation and cross-presentation by dendritic cells. The OVA 257-264 (SIINFEKL) peptide bound to H-2Kb is considered the gold standard for mouse CD8+ T cell assays and immunological models, providing a reliable benchmark for experimental outcomes. The high-purity OVA (257-264) peptide for H-2Kb research ensures the consistency and reproducibility of these critical experiments.

Beyond its direct use in T cell stimulation, the SIINFEKL peptide has also been explored in more complex systems. Research has demonstrated that the OVA peptide SIINFEKL can self-assemble into stable hydrogels, opening avenues for novel drug delivery and biomaterial applications. Variants of the SIINFEKL peptide, such as the OVA G4 peptide (SIIGFEKL), have also been developed to study variations in T cell receptor binding and immune responses. These OVA peptide SIINFEKL variants allow for a deeper understanding of epitope recognition and immune modulation.

For researchers seeking to utilize this vital immunological tool, several suppliers offer highly recommended Chicken Egg Albumin Peptide From InvivoGen. These high-quality reagents are biologically validated and undergo rigorous quality control to ensure proper activity and the absence of contaminants. The availability of SIINFEKL-10mg at competitive prices further facilitates its widespread use in academic and industrial research settings. The peptide sequence for SIINFEKL is well-established, and researchers can also find related peptides such as Ovalbumin 323-339 peptide for comparative studies.

In conclusion, the SIINFEKL peptide is an indispensable tool in immunology, offering a precise and reliable method for studying T cell responses, antigen presentation, and immune system dynamics. Its consistent interaction with H-2Kb and the availability of specific reagents and antibodies have cemented its role in diverse research areas, from basic cellular immunology to advanced translational applications in cancer research and vaccine development. The SIINFEKL offers a gateway to understanding complex immune mechanisms and developing novel therapeutic strategies.