CD133 allows elaborated discrimination and quantification of haematopoietic progenitor subsets in human haematopoietic stem cell transplants.
Br J Haematol
; 169(6): 868-78, 2015 Jun.
Article
em En
| MEDLINE
| ID: mdl-25819405
ABSTRACT
The success of haematopoietic stem cell (HSC) transplantation largely depends on numbers of transplanted HSCs, which reside in the CD34(+) populations of bone marrow (BM), peripheral blood stem cells (PBSC) and umbilical cord blood (UCB). More specifically HSCs reside in the CD38(low/-) subpopulation, which cannot be objectively discriminated from mature CD34(+) CD38(+) progenitors. Thus, better marker combinations for the quantification of more primitive haematopoietic stem and progenitor cells in transplants are required. Recently, by combining CD34 and CD133 we could clearly distinguish CD133(+) CD34(+) multipotent and lympho-myeloid from CD133(low) CD34(+) erythro-myeloid progenitors in UCB samples. To qualify the assessment of CD133 for routine quality control of adult HSC sources, we analysed the developmental potentials of CD133(+) and CD133(low) subpopulations in BM and PBSC. Similar to UCB, CD133 expression objectively discriminated functionally distinct subpopulations in adult HSC sources. By implementing anti-CD45RA staining, which separates multipotent (CD133(+) CD34(+) CD45RA(-) ) from lympho-myeloid (CD133(+) CD34(+) CD45RA(+) ) progenitor fractions, UCB was found to contain 2-3 times higher multipotent progenitor frequencies than BM and PBSC. To test for the consistency of CD133 expression, we compared CD133(+) CD34(+) contents of 128 UCB samples with maternal and obstetrical factors and obtained similar correlations to related studies focusing on CD34(+) cell contents. In conclusion, implementation of anti-CD133 staining into existing routine panels will improve the quality control analyses for HSC transplants.
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Base de dados:
MEDLINE
Assunto principal:
Peptídeos
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Fenótipo
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Células-Tronco Hematopoéticas
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Glicoproteínas
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Antígenos CD
Tipo de estudo:
Prognostic_studies
Limite:
Female
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Humans
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Male
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Newborn
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article