Blood Group Antigens
Blood Group Antigens - Related Videos
11:31
Antigens Protected Functional Red Blood Cells By The Membrane Grafting Of Compact Hyperbranched Polyglycerols
0 Views •
Cited by 5 •
2013
The cell membrane modification of red blood cells (RBCs) with hyperbranched polyglycerol (HPG) is presented. Modified RBCs were characterized by aqueous two phase partitioning, osmotic fragility and complement mediated lysis. The camouflage of surface proteins and antigens was evaluated using the flow cytometry and Micro Typing System (MTS) blood phenotyping cards.
09:29
Clinical Application of Sleeping Beauty and Artificial Antigen Presenting Cells to Genetically Modify T Cells from Peripheral and Umbilical Cord Blood
0 Views •
Cited by 53 •
2013
T cells expressing a CD19-specific chimeric antigen receptor (CAR) are infused as investigational treatment of B-cell malignancies in our first-in-human gene therapy trials. We describe genetic modification of T cells using the Sleeping Beauty (SB) system to introduce CD19-specific CAR and selective propagation on designer CD19+ artificial antigen presenting cells.
06:57
Development of an Antigen-driven Colitis Model to Study Presentation of Antigens by Antigen Presenting Cells to T Cells
0 Views •
Cited by 9 •
2016
In this antigen-driven colitis model, OT-II CD4+ T cells expressing a red fluorescent protein were adoptively transferred into RAG-/- mice that express a green fluorescent protein in mononuclear phagocytes (MPs). The hosts were challenged with Escherichia coli (E.coli) expressing the ovalbumin protein (OVA) fused to a cyan fluorescent protein (CFP).
05:04
Viral Antigen Microarray Assay to Detect Antibody Isotypes in Serum Against Viral Antigen
0 Views •
2025
In this video, we demonstrate the process for detecting antibody isotypes in multiple human serum samples using a microarray slide printed with antigenic subtypes of influenza virus strains.
08:32
Extraction of Tissue Antigens for Functional Assays
0 Views •
2012
A simple protocol for preparing extracts of human tissue to be used as a source of antigens in functional T-cell assays is described. This method allows T-cell responses to tissue-derived antigens to be measured in vitro.
FAQs
Variation in inherited molecular structures creates different antigen patterns among individuals. Because these markers can be carbohydrates or proteins on red-cell surfaces, the resulting pattern reflects biological differences that the immune system can recognize. This inherited diversity explains why blood-group identification must be established for each donor and recipient rather than assumed.
When incompatible blood enters circulation, antibodies recognize and bind the corresponding red-cell antigens. That binding can produce agglutination, in which cells clump, or hemolysis, in which red cells are destroyed. The mechanism matters because antigen-antibody recognition converts a molecular mismatch into a potentially harmful cellular response during transfusion.
The distinction describes how antibody reactivity can arise within blood-group biology: some antibodies are naturally occurring, whereas others are produced through an immune response. In either case, antibodies matter because their binding to corresponding antigens can promote agglutination or hemolysis, making antibody status relevant to compatibility assessment.
Identification determines the relevant markers associated with a person's red cells so that donor and recipient blood can be evaluated for compatibility. This step translates inherited antigen differences into a practical safety decision. Its purpose is to reduce the chance that introduced blood will encounter corresponding antibodies and trigger harmful cellular reactions.
Their importance extends beyond transfused red cells because transplantation also places one person's biological markers in contact with another person's immune system. Assessing these antigens helps inform compatibility considerations between donor and recipient. The same recognition principles therefore connect blood-group biology with efforts to reduce immune problems during organ transplantation.
This condition illustrates how blood-group differences can become clinically important in fetal and newborn health. Antibodies directed toward corresponding red-cell antigens can cause red-cell hemolysis, linking antigen recognition to disease. Identifying these markers supports management of hemolytic disease of the fetus and newborn and clarifies the underlying immune mechanism.
These markers provide tractable models for examining how inherited variation shapes cell-surface biology and immune responses. Their distinct molecular structures allow researchers to connect properties of red-cell surfaces with recognition by antibodies. Consequently, blood-group systems support broader biological investigation beyond clinical compatibility, including genetics and interactions between cells and the immune system.