Maternal pre-eclampsia serum increases neurite growth and mitochondrial function through a potential IL-6-dependent mechanism in differentiated SH-SY5Y cells

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dc.contributor.authorBarron, Aaronen
dc.contributor.authorManna, Sampriktaen
dc.contributor.authorMcElwain, Colm J.en
dc.contributor.authorMusumeci, Andreaen
dc.contributor.authorMcCarthy, Fergus P.en
dc.contributor.authorO'Keeffe, Gerard W.en
dc.contributor.authorMcCarthy, Cathal M.en
dc.contributor.funderIrish Research Councilen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderHealth Research Boarden
dc.date.accessioned2024-05-14T14:34:44Z
dc.date.available2024-05-14T14:34:44Z
dc.date.issued2023-01-12en
dc.description.abstractPre-eclampsia (PE) is a common and serious hypertensive disorder of pregnancy, which affects 3%-5% of first-time pregnancies and is a leading cause of maternal and neonatal morbidity and mortality. Prenatal exposure to PE is associated with an increased risk of neurodevelopmental disorders in affected offspring, although the cellular and molecular basis of this increased risk is largely unknown. Here, we examined the effects of exposure to maternal serum from women with PE or a healthy uncomplicated pregnancy on the survival, neurite growth and mitochondrial function of neuronally differentiated human SH-SY5Y neuroblastoma cells, which are commonly used to study neurite growth. Neurite growth and mitochondrial function are two strongly linked neurodevelopmental parameters in which alterations have been implicated in neurodevelopmental disorders. Following this, we investigated the pleiotropic cytokine interleukin-6 (IL-6) levels as a potential mechanism. Cells exposed to 3% (v/v) PE serum for 72 h exhibited increased neurite growth ( < 0.05), which was validated in the human neural progenitor cell line, ReNcell VM ( < 0.01), and mitochondrial respiration (elevated oxygen consumption rate ( < 0.05), basal mitochondrial respiration, proton leak, ATP synthesis, and non-mitochondrial respiration) compared to control serum-treated cells. ELISA analysis showed elevations in maternal IL-6 in PE sera ( < 0.05) and placental explants ( < 0.05). In support of this, SH-SY5Y cells exposed to 3% (v/v) PE serum for 24 h had increased phospho-STAT3 levels, which is a key intracellular mediator of IL-6 signalling ( < 0.05). Furthermore, treatment with anti-IL-6 neutralizing antibody blocked the effects of PE serum on neurite growth ( < 0.05), and exposure to IL-6 promoted neurite growth in SH-SY5Y cells ( < 0.01). Collectively these data show elevated serum levels of maternal IL-6 in PE, which increases neurite growth and mitochondrial function in SH-SY5Y cells. This rationalizes the further study of IL-6 as a potential mediator between PE exposure and neurodevelopmental outcome in the offspring.en
dc.description.sponsorshipIrish Research Council (GOIPG/2019/4400); Health Research Board, Ireland (HRB-EIA-2017-021); Science Foundation Ireland (19/ FFP/6666)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid1043481en
dc.identifier.citationBarron, A., Manna, S., McElwain, C.J., Musumeci, A., McCarthy, F.P., O’Keeffe, G.W. and McCarthy, C.M. (2023) ‘Maternal pre-eclampsia serum increases neurite growth and mitochondrial function through a potential IL-6-dependent mechanism in differentiated SH-SY5Y cells’, Frontiers in Physiology, 13, 1043481 (13 pp). Available at: https://doi.org/10.3389/fphys.2022.1043481en
dc.identifier.doihttps://doi.org/10.3389/fphys.2022.1043481en
dc.identifier.endpage13en
dc.identifier.issn3671-4304en
dc.identifier.journaltitleFrontiers in Physiologyen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/15862
dc.identifier.volume13en
dc.language.isoenen
dc.publisherFrontiers Mediaen
dc.rights© 2023 Barron, Manna, McElwain, Musumeci, McCarthy, O’Keeffe and McCarthy. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectAutism spectrum disorderen
dc.subjectInflammationen
dc.subjectInterleukin-6en
dc.subjectMitochondriaen
dc.subjectNeurite growthen
dc.subjectNeurodevelopmental disorderen
dc.subjectPre-eclampsiaen
dc.titleMaternal pre-eclampsia serum increases neurite growth and mitochondrial function through a potential IL-6-dependent mechanism in differentiated SH-SY5Y cellsen
dc.typeArticle (peer-reviewed)en
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