Thomi, Gierin Florence; Jörger-Messerli, Marianne; Oppliger, Byron; Spinelli, Marialuigia; Haesler, Valérie; Surbek, Daniel; Schoeberlein, Andreina (29 June 2017). Anti-Inflammatory Effects of Exosomes Derived from Human Umbilical Cord Mesenchymal Stem Cells on Neuroglia (Unpublished). In: Jahreskongress Schweizerische Gesellschaft für Gynäkologie und Geburtshilfe (SGGG). Lausanne, Switzerland. June 28-30, 2017.
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Wharton’s jelly mesenchymal stem cells (WJ-MSC) have the capacity to reduce
neuroinflammation and induce tissue regeneration in perinatal brain damage despite of
their low long-term survival in host tissue. The therapeutic function of WJ- MSC is mainly
ascribed to their paracrine secretion involving the shedding of cell-derived exosomes. The
aim of this study is to evaluate the anti-inflammatory effects of WJ-MSC-derived exosomes
on neuroglia in vitro.
WJ-MSC derived exosomes were isolated from cell culture supernatants using a protocol
consisting of several steps of successive centrifugations and ultra-centrifugations. The
isolated exosomes were characterized by their expression of endosomal markers and their
size using a membrane-based antibody array and electron microscopy. In vitro models
involving oxygen glucose deprivation and reoxygenation (OGD-R) and lipopolysaccharide
(LPS) stimulation were used to test the anti-inflammatory effects of the exosomes on
activated primary astrocytes and immortalized microglia cells. After the co-culture with
WJ-MSC derived exosomes, glia cells were evaluated for their expression of activation
markers and production of pro-inflammatory cytokines by real-time PCR, enzyme-linked
immunosorbent assay (ELISA) and Western blot.
WJ-MSC-derived exosomes were positive for endosomal markers, including TSG101 and
ALIX, and had a mean diameter of 34 nm. In co-culturing experiments, WJ-MSC-derived
exosomes prevented the upregulation of the astrocyte activation marker glial fibrillary
acidic protein (Gfap) in response to 6h of OGD and 48h of reoxygenation. WJ-MSC-derived
exosomes further tend to suppress the upregulation of pro-inflammatory cytokines such as
interleukin 1 beta (IL-1b), tumor necrosis factor alpha (TNF-α) and inducible isoform of nitric
oxide synthase (iNOS) in response to 24h LPS stimulation. In conclusion, we demonstrate
that WJ-MSC-derived exosomes are potent modulators of neuroglia activation in hypoxia/
ischemia and inflammation. Hence not only WJ-MSC, but also WJ-MSC-derived exosomes
are able to support tissue regeneration by reducing inflammation. As a result, WJ-MSC-derived
exosomes might represent a novel cell-free approach to treat perinatal brain
damage.
Item Type: |
Conference or Workshop Item (Poster) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Forschungsgruppe Pränatale Medizin 04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Gynaecology |
Graduate School: |
Graduate School for Cellular and Biomedical Sciences (GCB) |
UniBE Contributor: |
Thomi, Gierin Florence, Jörger, Marianne, Oppliger, Byron, Spinelli, Marialuigia, Haesler, Valérie, Surbek, Daniel, Schoeberlein, Andreina |
Subjects: |
500 Science 500 Science > 570 Life sciences; biology 600 Technology > 610 Medicine & health |
Language: |
Multilingual |
Submitter: |
Andreina Schoeberlein |
Date Deposited: |
02 Oct 2019 16:36 |
Last Modified: |
02 Mar 2023 23:32 |
BORIS DOI: |
10.7892/boris.129495 |
URI: |
https://boris.unibe.ch/id/eprint/129495 |
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