Abstract:
:Alloantibodies are known to influence transplant outcomes. Apart from human leukocyte antigens (HLA), non-HLA targets have been suggested to play a significant role, but little is known about their nature. Here, we present a novel method for identification and characterization of cell surface antigens bound by alloreactive antibodies. Our method consists of 2 consecutive steps: first, immunoprecipitation of cell surface proteins is carried out with serum and, second, matrix-assisted laser desorption/ionization-time-of-flight is used to fingerprint the precipitated cell-surface proteins. As an example, we performed immunoprecipitation with peripheral blood lymphocytes, which had been incubated with an alloreactive serum; immune complexes were coupled to protein-G beads and separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis; differential protein fractions were then analyzed by matrix-assisted laser desorption/ionization-time-of-flight. The method was validated with serum as well as with plasmapheresis material, which contained antibodies of known HLA specificities, demonstrating its applicability for clinical use.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Heinold A,Kuehl B,Brenner-Weiss G,Opelz G,Tran THdoi
10.1016/j.humimm.2010.02.006subject
Has Abstractpub_date
2010-05-01 00:00:00pages
462-7issue
5eissn
0198-8859issn
1879-1166pii
S0198-8859(10)00042-Xjournal_volume
71pub_type
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