Fernando Ulloa-Montoya

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BACKGROUND Recently, several populations of postnatal stem cells, such as multipotent adult progenitor cells (MAPCs), have been described that have broader differentiation ability than classical adult stem cells. Here we compare the transcriptome of pluripotent embryonic stem cells (ESCs), MAPCs, and lineage-restricted mesenchymal stem cells (MSCs) to(More)
As recent studies suggest that newly formed pancreatic beta-cells are a result of self-duplication rather than stem cell differentiation, in vitro expansion of beta-cells presents a potential mechanism by which to increase available donor tissue for cell-based diabetes therapies. Although most studies have found that beta-cells are resilient to substantial(More)
Dear Editor, We previously demonstrated (Jiang et al., 2002) that rodent multipotent adult progenitor cells (MAPC) can self-renew long-term while maintaining multilineage differentiation capacity. Rodent MAPC express a number of pluripotency-related transcription factors (TF) including Oct4 and Rex1 but not Nanog and Sox2, two other TF known to play a(More)
OBJECTIVE The microenvironment wherein hematopoietic stem cells (HSC) reside orchestrates HSC self-renewal vs. differentiation decisions. Stromal cells derived from ontogenically divergent hematopoietic microenvironments can support HSC in vitro and have been used to decipher factors that influence HSC fate decisions. Employing stromal cell lines derived(More)
The kidney has a high capacity to regenerate after ischemic injury via several mechanisms, one of which involves bone marrow-derived (stem) cells. The ATP binding cassette transporters, P-glycoprotein and breast cancer resistance protein, are determinants for the enriched stem and progenitor cell fraction in bone marrow. Because they are upregulated after(More)
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