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Proinflammatory signals are insufficient to drive definitive hematopoietic specification of human HSCs in vitro.

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dc.contributor.author Giorgetti, Alessandra
dc.contributor.author Castaño, Julio
dc.contributor.author Bueno, Clara
dc.contributor.author Diaz de la Guardia, Rafael
dc.contributor.author Delgado, Mario
dc.contributor.author Bigas Salvans, Anna
dc.contributor.author Espinosa Blay, Lluís
dc.contributor.author Menéndez, Pablo
dc.date.accessioned 2017-03-06T12:22:43Z
dc.date.available 2017-03-06T12:22:43Z
dc.date.issued 2017
dc.identifier.citation Giorgetti A, Castaño J, Bueno C, Díaz de la Guardia R, Delgado M, Bigas A. et al. Proinflammatory signals are insufficient to drive definitive hematopoietic specification of human HSCs in vitro. Exp Hematol. 2017 Jan;45:85-93.e2. doi: 10.1016/j.exphem.2016.09.007
dc.identifier.issn 0301-472X
dc.identifier.uri http://hdl.handle.net/10230/28170
dc.description.abstract Recent studies in zebrafish and mice have revealed that proinflammatory signaling is a positive regulator of definitive hematopoietic development. Whether proinflammatory signaling also regulates human hematopoietic specification remains unknown. Here, we explored the impact of the proinflammatory cytokines tumor necrosis factor-α (TNFα), interferon-γ (IFNγ), and interleukin-1β (IL1β) on in vitro hematopoietic differentiation using human pluripotent stem cells. Gene expression analysis and enzyme-linked immunosorbent assay revealed the absence of a proinflammatory signature during hematopoietic development of human pluripotent stem cells. Functionally, the emergence of hemogenic endothelial progenitors (CD31+CD34+CD45- or CD34+CD43-CD73-) and hematopoietic cells (CD43+CD45+) was not affected by treatment with increasing doses of TNFα, IFNγ, and IL1β irrespective of the developmental window or the differentiation protocol used (embryoid body or OP9 co-culture based). Similarly, knockdown of endogenous NF-kB signaling had no impact on hematopoietic differentiation of human pluripotent stem cells. This study serves as a demonstration that TNFα, IFNγ, and IL1β signals do not improve hematopoietic differentiation of human pluripotent stem cells using current protocols and suggests that proinflammatory signaling is insufficient to drive definitive hematopoietic specification of human hematopoietic stem cells in vitro.
dc.description.sponsorship This work was supported by the European Research Council (646903 to PM) and the Spanish Ministry of Economy and Competitiveness (SAF2013-43072R to AG, SAF2013-43065R to PM, and ISCIII/FEDER-PI14/01119 to CB). CB is supported by a Miguel Servet contract (CPII13/00011). AG is supported by the Ramon y Cajal Program (RyC-2013-13221). PM also acknowledges support from Obra Social La Caixa-Fundacio Josep Carreras and Generalitat de Catalunya (SGR330).
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.relation.ispartof Experimental Hematology. 2017 Jan;45:85-93
dc.rights © Elsevier http://dx.doi.org/10.1016/j.exphem.2016.09.007
dc.subject.other Cèl·lules mare hematopoètiques
dc.subject.other Inflamació
dc.subject.other Hematologia
dc.title Proinflammatory signals are insufficient to drive definitive hematopoietic specification of human HSCs in vitro.
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1016/j.exphem.2016.09.007
dc.rights.accessRights info:eu-repo/semantics/embargoedAccess
dc.type.version info:eu-repo/semantics/acceptedVersion

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