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Enhancement of red blood cell transfusion compatibility using CRISPR‐mediated erythroblast gene editing

Research output: Contribution to journalArticle

Original languageEnglish
Article numbere8454
Number of pages11
JournalEMBO Molecular Medicine
Volume10
Issue number5
Early online date26 Apr 2018
DOIs
DateAccepted/In press - 26 Mar 2018
DateE-pub ahead of print (current) - 26 Apr 2018

Abstract

Regular blood transfusion is the cornerstone of care for patients with red blood cell (RBC) disorders such as thalassaemia or sicklecell disease. With repeated transfusion, alloimmunisation often occurs due to incompatibility at the level of minor blood group antigens. We use CRISPR-mediated genome editing of an immortalised human erythroblast cell line (BEL-A) to generate multiple enucleation competent cell lines deficient in individual blood groups. Edits are combined to generate a single cell line deficient in multiple antigens responsible for the most common transfusion incompatibilities: ABO (Bombay phenotype), Rh (Rhnull), Kell (K0), Duffy (Duffynull), GPB (Ss U). These cells can be differentiated to generate deformable reticulocytes, illustrating the capacity for coexistence of multiple rare blood group antigen null phenotypes. This study provides the first proof-of-principle demonstration of combinatorial CRISPR-mediated blood group gene editing to generate customisable or multi-compatible RBCs for diagnostic reagents or recipients with complicated matching requirements.

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