Analysis of the Spanish CCR5-∆32 inventory of cord blood units: lower cell counts in homozygous donors

The possibility to use CCR5 -∆32 umbilical cord blood to cure HIV infection in patients in need of a hematopoietic transplant has been suggested. The less stringent HLA compatibility needed in this type of transplant facilitates the search of a suitable donor having the CCR5 -∆32 mutation. To achiev...

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Veröffentlicht in:Bone marrow transplantation (Basingstoke) 2018-06, Vol.53 (6), p.741-748
Hauptverfasser: Enrich, Emma, Vidal, Francisco, Sánchez-Gordo, Francisco, Gómez-Zumaquero, Juan M., Balas, Antonio, Rudilla, Francesc, Barea, Luisa, Castro, Ana, Larrea, Luis, Perez-Vaquero, Miguel A., Prat, Isidro, Querol, Sergio, Garrido, Gregorio, Matesanz, Rafael, Carreras, Enric, Duarte, Rafael F.
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container_end_page 748
container_issue 6
container_start_page 741
container_title Bone marrow transplantation (Basingstoke)
container_volume 53
creator Enrich, Emma
Vidal, Francisco
Sánchez-Gordo, Francisco
Gómez-Zumaquero, Juan M.
Balas, Antonio
Rudilla, Francesc
Barea, Luisa
Castro, Ana
Larrea, Luis
Perez-Vaquero, Miguel A.
Prat, Isidro
Querol, Sergio
Garrido, Gregorio
Matesanz, Rafael
Carreras, Enric
Duarte, Rafael F.
description The possibility to use CCR5 -∆32 umbilical cord blood to cure HIV infection in patients in need of a hematopoietic transplant has been suggested. The less stringent HLA compatibility needed in this type of transplant facilitates the search of a suitable donor having the CCR5 -∆32 mutation. To achieve an inventory of CCR5 -∆32 cord blood units, the 20,236 best cell quality units of the Spanish Registry were genotyped. Furthermore, their CD34 + and total nucleated cells counts, blood type, gender, HLA and donor’s geographical and ancestral origin were analyzed. The results showed 130 (0.64%) units homozygous for the deletion, 2,646 (13.08%) heterozygous and 17,460 (86.28%) did not present the mutation. Interestingly, a significant lower amount of CD34 + cells was found in the CCR5 -∆32 homozygous units. In addition, a significant association was found among donor’s ancestral origin and the mutation, with a higher percentage of CCR5-∆32 units with a European ancestry. In summary, identification of a relatively high number of CCR5 -∆32 units is feasible and will facilitate the development of clinical trials for HIV cure in patients requiring hematopoietic transplantation. Further studies are required to understand the significance of lower cell counts within the CCR5 -∆32 homozygous group and its clinical impact.
doi_str_mv 10.1038/s41409-018-0114-8
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The less stringent HLA compatibility needed in this type of transplant facilitates the search of a suitable donor having the CCR5 -∆32 mutation. To achieve an inventory of CCR5 -∆32 cord blood units, the 20,236 best cell quality units of the Spanish Registry were genotyped. Furthermore, their CD34 + and total nucleated cells counts, blood type, gender, HLA and donor’s geographical and ancestral origin were analyzed. The results showed 130 (0.64%) units homozygous for the deletion, 2,646 (13.08%) heterozygous and 17,460 (86.28%) did not present the mutation. Interestingly, a significant lower amount of CD34 + cells was found in the CCR5 -∆32 homozygous units. In addition, a significant association was found among donor’s ancestral origin and the mutation, with a higher percentage of CCR5-∆32 units with a European ancestry. In summary, identification of a relatively high number of CCR5 -∆32 units is feasible and will facilitate the development of clinical trials for HIV cure in patients requiring hematopoietic transplantation. 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ispartof Bone marrow transplantation (Basingstoke), 2018-06, Vol.53 (6), p.741-748
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subjects 45
45/77
631/250/1904
692/308/2171
Analysis
Blood groups
Care and treatment
CCR5 protein
CD34 antigen
Cell Biology
Chemokine receptors
Clinical trials
Clonal deletion
Cord blood
Cord Blood Stem Cell Transplantation - methods
Female
Fetal blood
Gene deletion
Genotype
Hematology
Histocompatibility antigen HLA
HIV
HIV infections
HIV patients
Homozygote
Human immunodeficiency virus
Humans
Infection
Internal Medicine
Male
Medical research
Medicine
Medicine & Public Health
Mutation
Patients
Public Health
Receptors, CCR5 - immunology
Stem cell transplantation
Stem Cells
Surgery
Tissue Donors
Transplantation
Transplants & implants
Umbilical cord
title Analysis of the Spanish CCR5-∆32 inventory of cord blood units: lower cell counts in homozygous donors
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