BACKGROUND: The storage of blood induces the formation of erythrocytes-derived microparticles. Their pathogenic role in blood transfusion is not known so far, especially the risk to trigger alloantibody production in the recipient. This work aims to study the expression of clinically significant blood group antigens on the surface of red blood cells microparticles. MATERIAL AND METHODS: Red blood cells contained in erythrocyte concentrates were stained with specific antibodies directed against blood group antigens and routinely used in immunohematology practice. After inducing erythrocytes vesiculation with calcium ionophore, the presence of blood group antigens was analysed by flow cytometry. RESULTS: The expression of several blood group antigens from the RH, KEL, JK, FY, MNS, LE and LU systems was detected on erythrocyte microparticles. The presence of M (MNS1), N (MNS2) and s (MNS4) antigens could not be demonstrated by flow cytometry, despite that glycophorin A and B were identified on microparticles using anti-CD235a and anti-MNS3. DISCUSSION: We conclude that blood group antigens are localized on erythrocytes-derived microparticles and probably keep their immunogenicity because of their capacity to bind specific antibody. Selective segregation process during vesiculation or their ability to elicit an immune response in vivo has to be tested by further studies.
BACKGROUND: The storage of blood induces the formation of erythrocytes-derived microparticles. Their pathogenic role in blood transfusion is not known so far, especially the risk to trigger alloantibody production in the recipient. This work aims to study the expression of clinically significant blood group antigens on the surface of red blood cells microparticles. MATERIAL AND METHODS: Red blood cells contained in erythrocyte concentrates were stained with specific antibodies directed against blood group antigens and routinely used in immunohematology practice. After inducing erythrocytes vesiculation with calcium ionophore, the presence of blood group antigens was analysed by flow cytometry. RESULTS: The expression of several blood group antigens from the RH, KEL, JK, FY, MNS, LE and LU systems was detected on erythrocyte microparticles. The presence of M (MNS1), N (MNS2) and s (MNS4) antigens could not be demonstrated by flow cytometry, despite that glycophorin A and B were identified on microparticles using anti-CD235a and anti-MNS3. DISCUSSION: We conclude that blood group antigens are localized on erythrocytes-derived microparticles and probably keep their immunogenicity because of their capacity to bind specific antibody. Selective segregation process during vesiculation or their ability to elicit an immune response in vivo has to be tested by further studies.
Authors: G J C G M Bosman; E Lasonder; Y A M Groenen-Döpp; F L A Willekens; J M Werre; V M J Novotný Journal: J Proteomics Date: 2009-08-04 Impact factor: 4.044
Authors: Anastasios G Kriebardis; Marianna H Antonelou; Konstantinos E Stamoulis; Effrosini Economou-Petersen; Lukas H Margaritis; Issidora S Papassideri Journal: Transfusion Date: 2008-06-28 Impact factor: 3.157
Authors: Eduard J van Beers; Marianne C L Schaap; René J Berckmans; Rienk Nieuwland; Augueste Sturk; Frederiek F van Doormaal; Joost C M Meijers; Bart J Biemond Journal: Haematologica Date: 2009-10-08 Impact factor: 9.941
Authors: Johanna Reckhaus; Markus Jutzi; Stefano Fontana; Vera Ulrike Bacher; Marco Vogt; Michael Daslakis; Behrouz Mansouri Taleghani Journal: Transfus Med Hemother Date: 2018-05-24 Impact factor: 3.747