Autologous Lcls Presentation
Autologous Lcls Presentation - Related Videos
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Modeling Intracerebral Hemorrhage in Mice: Injection of Autologous Blood or Bacterial Collagenase
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Cited by 60 •
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Clinically relevant animal models of intracerebral hemorrhage (ICH) are needed to extend our knowledge of hemorrhagic stroke and to examine novel therapeutic strategies. In this study, we describe and evaluate two ICH models that implement unilateral injections of either autologous whole blood or bacterial collagenase into the basal ganglia (corpus striatum) of mice.
FAQs
Endogenous antigens originate within the lymphoblastoid cell line, whereas externally supplied antigens are introduced to the cells for processing. In both cases, the resulting peptide fragments can be displayed on MHC molecules and assessed for recognition by antigen-specific T-cell receptors. Comparing these antigen sources helps investigators examine how antigen availability influences presentation and cellular immune responses.
HLA matching links the antigen-presenting lymphoblastoid cell line to the same donor whose T cells are being evaluated. This genetic compatibility reduces alloreactivity, meaning immune responses directed against genetically different cells rather than the test antigen. Consequently, measured activation more closely reflects antigen-specific recognition and provides a cleaner interpretation of cellular immunity.
MHC molecules display processed peptide fragments on the surface of the lymphoblastoid cell line, while T-cell receptors inspect those peptide-MHC combinations for antigen-specific recognition. This interaction connects intracellular antigen processing with measurable T-cell responses. Alterations in the presented peptides or their recognition can therefore reveal differences in epitope presentation and immune specificity.
Epstein–Barr virus-transformed B cells provide the cellular platform for establishing lymphoblastoid cell lines that present antigen-derived peptides. Their use allows investigators to examine T-cell recognition in cells carrying the donor’s HLA profile. In infection and immunity research, this platform supports controlled analysis of pathogen-specific recognition without making unrelated genetic differences the primary explanation for the response.
The approach begins with a donor-matched lymphoblastoid cell line, followed by exposure to an endogenous or externally supplied antigen source. The cells then process antigenic material and display peptide fragments on MHC molecules for contact with T cells. Investigators evaluate the resulting antigen-specific recognition or activation, using the response to study cellular immunity.
Researchers may select this approach when they need to examine pathogen-specific T-cell recognition under genetically matched conditions. It is relevant for studying how infection-derived antigens are processed, which epitopes are presented, and how cellular immune responses vary between individuals. The reduced influence of alloreactivity helps focus interpretation on recognition associated with the pathogen-related antigen.
The method can reveal whether antigenic material generates recognizable peptide-MHC combinations and whether donor T cells respond to them. Such findings help characterize epitope presentation and variation in cellular immunity. In vaccine studies, they inform evaluation of antigen-specific responses, while in immunotherapy development they provide a system for examining recognition relevant to immune-based interventions.
Because the presenting cells share the donor’s HLA profile, differences in T-cell responses can be examined in relation to antigen-specific recognition rather than primarily to mismatched presentation. Comparing responses across donors can therefore highlight variation in epitope presentation, T-cell recognition, and cellular immunity. This makes the approach useful for connecting genetic compatibility with individual immune-response patterns.