TITLE:
The CD133/1+ cell subset from human subcutaneous adult fat retains hemogenic potential
AUTHORS:
Camila Santos de Moraes, Paulo Roberto Albuquerque Leal, Daniel Fabiano Ferreira, Fernando Serra, Eliana Abdelhay, Claudia Sondermann Freitas
KEYWORDS:
Adipose Tissue-Derived Stem Cells; CD133; Hematogenesis; Hemangioblast; Pericyte
JOURNAL NAME:
Stem Cell Discovery,
Vol.2 No.2,
April
25,
2012
ABSTRACT: Research has shown that cells from adult fat tissue can effect long-term blood reconstitution. Fat-derived multipotentiality was ascribed to CD34+ perivascular populations from its prominent microvasculature, that represent mostly non-hemogenic, mesenchymal cells, although this tissue contains a CD34+45+ subset committed to a hemogenic fate. Here, in order to analyze cell subsets presenting hemogenic capabilities within fat, CD133/1+ and pericytes, the latter defined by CD140b (PDGFRb, Platelet-Derived Growth Factor Receptor Beta) expression, were immunomagnetically selected from stromal-vascular fractions (SVF). In Vitro Colony Forming Unit (CFU) assays were negative for CD140b+ pericytes and positive for CD133/1+ cells when a prolonged CFU assay was performed, revealing fat as another store of primitive progenitors that retain hemogenic potential.