Prostaglandin E2 Enhances Aged Hematopoietic Stem Cell Function

dc.contributor.authorPatterson, Andrea M.
dc.contributor.authorPlett, P. Artur
dc.contributor.authorSampson, Carol H.
dc.contributor.authorSimpson, Edward
dc.contributor.authorLiu, Yunlong
dc.contributor.authorPelus, Louis M.
dc.contributor.authorOrschell, Christie M.
dc.contributor.departmentMedicine, School of Medicineen_US
dc.date.accessioned2023-02-21T18:40:10Z
dc.date.available2023-02-21T18:40:10Z
dc.date.issued2021-10
dc.description.abstractAging of hematopoiesis is associated with increased frequency and clonality of hematopoietic stem cells (HSCs), along with functional compromise and myeloid bias, with donor age being a significant variable in survival after HSC transplantation. No clinical methods currently exist to enhance aged HSC function, and little is known regarding how aging affects molecular responses of HSCs to biological stimuli. Exposure of HSCs from young fish, mice, nonhuman primates, and humans to 16,16-dimethyl prostaglandin E2 (dmPGE2) enhances transplantation, but the effect of dmPGE2 on aged HSCs is unknown. Here we show that ex vivo pulse of bone marrow cells from young adult (3 mo) and aged (25 mo) mice with dmPGE2 prior to serial competitive transplantation significantly enhanced long-term repopulation from aged grafts in primary and secondary transplantation (27 % increase in chimerism) to a similar degree as young grafts (21 % increase in chimerism; both p < 0.05). RNA sequencing of phenotypically-isolated HSCs indicated that the molecular responses to dmPGE2 are similar in young and old, including CREB1 activation and increased cell survival and homeostasis. Common genes within these pathways identified likely key mediators of HSC enhancement by dmPGE2 and age-related signaling differences. HSC expression of the PGE2 receptor EP4, implicated in HSC function, increased with age in both mRNA and surface protein. This work suggests that aging does not alter the major dmPGE2 response pathways in HSCs which mediate enhancement of both young and old HSC function, with significant implications for expanding the therapeutic potential of elderly HSC transplantation.en_US
dc.eprint.versionFinal published versionen_US
dc.identifier.citationPatterson, A. M., Plett, P. A., Sampson, C. H., Simpson, E., Liu, Y., Pelus, L. M., & Orschell, C. M. (2021). Prostaglandin E2 Enhances Aged Hematopoietic Stem Cell Function. Stem Cell Reviews and Reports, 17(5), 1840–1854. https://doi.org/10.1007/s12015-021-10177-zen_US
dc.identifier.urihttps://hdl.handle.net/1805/31364
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.isversionof10.1007/s12015-021-10177-zen_US
dc.relation.journalStem Cell Reviews and Reportsen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.sourcePublisheren_US
dc.subjecthematopoietic stem cellsen_US
dc.subjecttransplantationen_US
dc.subjectProstaglandin E2en_US
dc.titleProstaglandin E2 Enhances Aged Hematopoietic Stem Cell Functionen_US
dc.typeArticleen_US
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