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EndoC-beta H1 cells display increased sensitivity to sodium palmitate when cultured in DMEM/F12 medium
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Science for Life Laboratory, SciLifeLab.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Science for Life Laboratory, SciLifeLab.
Uppsala University, Science for Life Laboratory, SciLifeLab. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.ORCID iD: 0000-0003-0353-326X
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology. Uppsala University, Science for Life Laboratory, SciLifeLab.
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2017 (English)In: Islets, ISSN 1938-2014, E-ISSN 1938-2022, Vol. 9, no 3, 43-48 p.Article in journal (Refereed) Published
Abstract [en]

Aims - Human pancreatic islets are known to die in response to the free fatty acid of sodium palmitate when cultured in vitro. This is in contrast to EndoC-beta H1 cells, which in our hands are not sensitive to the cell death-inducing effects sodium palmitate, making these cells seemingly unsuitable for lipotoxicity studies. However, the EndoC-beta H1 cells are routinely cultured in a nutrient mixture based on Dulbecco's Modified Eagle Medium (DMEM), which may not be the optimal choice for studies dealing with lipotoxicity. The aim of the present investigation was to define culture conditions that render EndoC-beta H1 cells sensitive to toxic effects of sodium palmitate. Methods - EndoC-beta H1 cells were cultured at standard conditions in either DMEM or DMEM/F12 culture medium. Cell death was analyzed using propidium iodide staining and flow cytometry. Insulin release and content was quantified using a human insulin ELISA. Results - We presently observe that substitution of DMEM for a DMEM/Ham's F12 mixture (50%/50% vol/vol) renders the cells sensitive to the apoptotic effects of sodium palmitate and sodium palmitate + high glucose leading to an increased cell death. Supplementation of the DMEM culture medium with linoleic acid partially mimicked the effect of DMEM/F12. Culture of EndoC-beta H1 cells in DMEM/F12 resulted also in increased proliferation, ROS production and insulin contents, but markers for metabolic stress, autophagy or amyloid deposits were unaffected. Conclusions - The culture conditions for EndoC-beta H1 cells can be modified so these cells display signs of lipotoxicity in response to sodium palmitate.

Place, publisher, year, edition, pages
2017. Vol. 9, no 3, 43-48 p.
Keyword [en]
cell death, EndoC-beta H1 cells, insulin, ROS production, sodium palmitate
National Category
Endocrinology and Diabetes
Identifiers
URN: urn:nbn:se:uu:diva-331910DOI: 10.1080/19382014.2017.1296995ISI: 000405586500001OAI: oai:DiVA.org:uu-331910DiVA: diva2:1151285
Funder
EXODIAB - Excellence of Diabetes Research in SwedenSwedish Diabetes AssociationSwedish Child Diabetes Foundation
Available from: 2017-10-23 Created: 2017-10-23 Last updated: 2017-10-23Bibliographically approved

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Krizhanovskii, CamillaKristinsson, HjaltiElksnis, AndrisWang, XuanGavali, HamidBergsten, PeterWelsh, Nils
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