Hla Interaction
Hla Interaction - Related Videos
03:15
A Peptide Array-Based Detection of Anti-donor HLA Alloantibodies in Organ Recipients
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2025
This video demonstrates an assay to detect anti-donor HLA alloantibodies in organ recipients. A peptide array is synthesized to represent potential epitopes for antibody-mediated organ rejection. The array is incubated with the recipient's serum, containing alloantibodies that bind to their target epitopes. Antibody binding is detected using chemiluminescence to identify donor-specific HLA epitopes that incite alloantibody reactivity.
08:07
Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation
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Cited by 2 •
2017
Mismatches in human leukocyte antigen (HLA) sequences between organ donor and recipient pairs are the major cause of antibody-mediated rejection in organ transplantation. Here we present the use of custom antigen arrays that are based on individual donors' HLA sequences to probe anti-donor HLA alloantibodies in organ recipients.
07:18
HLA-Ig Based Artificial Antigen Presenting Cells for Efficient ex vivo Expansion of Human CTL
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Cited by 17 •
2011
A new DC independent method for induction and expansion of antigen-specific T cells is described. HLA A2-Ig based artificial Antigen Presenting Cells (aAPC) are loaded with HLA-A2 restricted peptides to efficiently expand CTL of diverse antigen specificity. This technology holds great potential for CTL-based adoptive immunotherapy.
02:39
Predator-Prey Interactions
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2026
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.Although predation is commonly associated with carnivory, for...
06:41
Assessment of Social Interaction Behaviors
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Cited by 561 •
2011
Here we describe a detailed protocol for examination of sociability in mice by using Crawley's sociability and preference for social novelty test. We describe the advantages and possible applications for this procedure, including critical details important for correct interpretation of the results.
FAQs
Within cells, HLA molecules bind short peptides before displaying the resulting complexes at the cell surface for inspection. This intracellular loading step determines which peptide sequences become visible to immune receptors, while the HLA molecule provides the molecular context for recognition. Consequently, changes in peptide availability or HLA variation can alter the immune signals that are generated.
Genetic variation in HLA genes changes the set of peptide-HLA combinations an individual can present. Because immune receptors assess both the peptide and its HLA context, this variation can influence responses to infections and help explain why individuals differ in disease susceptibility or autoimmune risk. HLA genetics therefore connects molecular recognition with differences in immune outcomes.
Recognition does not rely on one receptor type. T-cell receptors assess peptide-HLA complexes, whereas natural killer cell receptors also evaluate HLA-related signals. This distinction matters because HLA molecules participate in different immune surveillance pathways. Examining both receptor relationships provides a broader interpretation of how HLA interaction shapes immune responses rather than treating peptide display as a single pathway.
An HLA compatibility workflow begins by determining relevant HLA genotypes from donor and recipient, then comparing the resulting profiles. The comparison addresses genetic compatibility rather than a single immune marker, because HLA molecules are highly variable. In transplantation, this analysis helps identify pairings expected to reduce harmful donor-recipient immune reactions and supports informed selection decisions.
Compatibility analysis is especially important when donor and recipient HLA profiles differ. Identifying these differences before an organ or stem-cell transplant allows genetic information to guide donor-recipient matching and reduce the likelihood of harmful immune reactions. Its value is preventive: the analysis supports selection decisions before transplanted material encounters the recipient’s immune surveillance.
Researchers study HLA interaction to connect molecular recognition with genetic and clinical patterns. Comparing HLA variation with disease susceptibility, infection responses, or autoimmune risk can reveal how inherited differences shape immune behavior. These studies examine more than HLA genes alone by considering how their variation influences peptide presentation and subsequent assessment by immune receptors.