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Published in: Acta Neuropathologica 6/2019

Open Access 01-12-2019 | Original Paper

Detrimental and protective action of microglial extracellular vesicles on myelin lesions: astrocyte involvement in remyelination failure

Authors: Marta Lombardi, Roberta Parolisi, Federica Scaroni, Elisabetta Bonfanti, Alice Gualerzi, Martina Gabrielli, Nicole Kerlero de Rosbo, Antonio Uccelli, Paola Giussani, Paola Viani, Cecilia Garlanda, Maria P. Abbracchio, Linda Chaabane, Annalisa Buffo, Marta Fumagalli, Claudia Verderio

Published in: Acta Neuropathologica | Issue 6/2019

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Abstract

Microglia are highly plastic immune cells which exist in a continuum of activation states. By shaping the function of oligodendrocyte precursor cells (OPCs), the brain cells which differentiate to myelin-forming cells, microglia participate in both myelin injury and remyelination during multiple sclerosis. However, the mode(s) of action of microglia in supporting or inhibiting myelin repair is still largely unclear. Here, we analysed the effects of extracellular vesicles (EVs) produced in vitro by either pro-inflammatory or pro-regenerative microglia on OPCs at demyelinated lesions caused by lysolecithin injection in the mouse corpus callosum. Immunolabelling for myelin proteins and electron microscopy showed that EVs released by pro-inflammatory microglia blocked remyelination, whereas EVs produced by microglia co-cultured with immunosuppressive mesenchymal stem cells promoted OPC recruitment and myelin repair. The molecular mechanisms responsible for the harmful and beneficial EV actions were dissected in primary OPC cultures. By exposing OPCs, cultured either alone or with astrocytes, to inflammatory EVs, we observed a blockade of OPC maturation only in the presence of astrocytes, implicating these cells in remyelination failure. Biochemical fractionation revealed that astrocytes may be converted into harmful cells by the inflammatory EV cargo, as indicated by immunohistochemical and qPCR analyses, whereas surface lipid components of EVs promote OPC migration and/or differentiation, linking EV lipids to myelin repair. Although the mechanisms through which the lipid species enhance OPC maturation still remain to be fully defined, we provide the first demonstration that vesicular sphingosine 1 phosphate stimulates OPC migration, the first fundamental step in myelin repair. From this study, microglial EVs emerge as multimodal and multitarget signalling mediators able to influence both OPCs and astrocytes around myelin lesions, which may be exploited to develop novel approaches for myelin repair not only in multiple sclerosis, but also in neurological and neuropsychiatric diseases characterized by demyelination.
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Literature
4.
go back to reference Barenholz Y, Gibbes D, Litman BJ, Goll J, Thompson TE, Carlson RD (1977) A simple method for the preparation of homogeneous phospholipid vesicles. Biochemistry 16:2806–2810CrossRefPubMed Barenholz Y, Gibbes D, Litman BJ, Goll J, Thompson TE, Carlson RD (1977) A simple method for the preparation of homogeneous phospholipid vesicles. Biochemistry 16:2806–2810CrossRefPubMed
13.
go back to reference Brambilla R, Ashbaugh JJ, Magliozzi R, Dellarole A, Karmally S, Szymkowski DE et al (2011) Inhibition of soluble tumour necrosis factor is therapeutic in experimental autoimmune encephalomyelitis and promotes axon preservation and remyelination. Brain J Neurol 134:2736–2754. https://doi.org/10.1093/brain/awr199 CrossRef Brambilla R, Ashbaugh JJ, Magliozzi R, Dellarole A, Karmally S, Szymkowski DE et al (2011) Inhibition of soluble tumour necrosis factor is therapeutic in experimental autoimmune encephalomyelitis and promotes axon preservation and remyelination. Brain J Neurol 134:2736–2754. https://​doi.​org/​10.​1093/​brain/​awr199 CrossRef
26.
go back to reference Dubochet J, Adrian M, Chang JJ, Homo JC, Lepault J, McDowall AW et al (1988) Cryo-electron microscopy of vitrified specimens. Q Rev Biophys 21:129–228CrossRefPubMed Dubochet J, Adrian M, Chang JJ, Homo JC, Lepault J, McDowall AW et al (1988) Cryo-electron microscopy of vitrified specimens. Q Rev Biophys 21:129–228CrossRefPubMed
31.
go back to reference Fumagalli M, Bonfanti E, Daniele S, Zappelli E, Lecca D, Martini C et al (2015) The ubiquitin ligase Mdm2 controls oligodendrocyte maturation by intertwining mTOR with G protein-coupled receptor kinase 2 in the regulation of GPR17 receptor desensitization. Glia 63:2327–2339. https://doi.org/10.1002/glia.22896 CrossRefPubMed Fumagalli M, Bonfanti E, Daniele S, Zappelli E, Lecca D, Martini C et al (2015) The ubiquitin ligase Mdm2 controls oligodendrocyte maturation by intertwining mTOR with G protein-coupled receptor kinase 2 in the regulation of GPR17 receptor desensitization. Glia 63:2327–2339. https://​doi.​org/​10.​1002/​glia.​22896 CrossRefPubMed
41.
go back to reference Hall SM (1972) The effect of injections of lysophosphatidyl choline into white matter of the adult mouse spinal cord. J Cell Sci 10:535–546PubMed Hall SM (1972) The effect of injections of lysophosphatidyl choline into white matter of the adult mouse spinal cord. J Cell Sci 10:535–546PubMed
50.
go back to reference Kotter MR, Setzu A, Sim FJ, Van Rooijen N, Franklin RJ (2001) Macrophage depletion impairs oligodendrocyte remyelination following lysolecithin-induced demyelination. Glia 35:204–212CrossRefPubMed Kotter MR, Setzu A, Sim FJ, Van Rooijen N, Franklin RJ (2001) Macrophage depletion impairs oligodendrocyte remyelination following lysolecithin-induced demyelination. Glia 35:204–212CrossRefPubMed
58.
59.
go back to reference Maimone D, Gregory S, Arnason BG, Reder AT (1991) Cytokine levels in the cerebrospinal fluid and serum of patients with multiple sclerosis. J Neuroimmunol 32:67–74CrossRefPubMed Maimone D, Gregory S, Arnason BG, Reder AT (1991) Cytokine levels in the cerebrospinal fluid and serum of patients with multiple sclerosis. J Neuroimmunol 32:67–74CrossRefPubMed
66.
go back to reference Mycko MP, Papoian R, Boschert U, Raine CS, Selmaj KW (2003) cDNA microarray analysis in multiple sclerosis lesions: detection of genes associated with disease activity. Brain 126:1048–1057CrossRefPubMed Mycko MP, Papoian R, Boschert U, Raine CS, Selmaj KW (2003) cDNA microarray analysis in multiple sclerosis lesions: detection of genes associated with disease activity. Brain 126:1048–1057CrossRefPubMed
68.
go back to reference Okabe M, Ikawa M, Kominami K, Nakanishi T, Nishimune Y (1997) ‘Green mice’ as a source of ubiquitous green cells. FEBS Lett 407:313–319CrossRefPubMed Okabe M, Ikawa M, Kominami K, Nakanishi T, Nishimune Y (1997) ‘Green mice’ as a source of ubiquitous green cells. FEBS Lett 407:313–319CrossRefPubMed
79.
go back to reference Riboni L, Viani P, Bassi R, Giussani P, Tettamanti G (2000) Cultured granule cells and astrocytes from cerebellum differ in metabolizing sphingosine. J Neurochem 75:503–510CrossRefPubMed Riboni L, Viani P, Bassi R, Giussani P, Tettamanti G (2000) Cultured granule cells and astrocytes from cerebellum differ in metabolizing sphingosine. J Neurochem 75:503–510CrossRefPubMed
80.
go back to reference Riboni L, Viani P, Tettamanti G (2000) Estimating sphingolipid metabolism and trafficking in cultured cells using radiolabeled compounds. Method Enzymol 311:656–682CrossRef Riboni L, Viani P, Tettamanti G (2000) Estimating sphingolipid metabolism and trafficking in cultured cells using radiolabeled compounds. Method Enzymol 311:656–682CrossRef
83.
go back to reference Shields S, Gilson J, Blakemore W, Franklin R (2000) Remyelination occurs as extensively but more slowly in old rats compared to young rats following fliotoxin-induced CNS demyelination. Glia 29:102CrossRefPubMed Shields S, Gilson J, Blakemore W, Franklin R (2000) Remyelination occurs as extensively but more slowly in old rats compared to young rats following fliotoxin-induced CNS demyelination. Glia 29:102CrossRefPubMed
93.
go back to reference Van Oosten BW, Barkhof F, Scholten PE, von Blomberg BM, Ader HJ, Polman CH (1998) Increased production of tumor necrosis factor alpha, and not of interferon gamma, preceding disease activity in patients with multiple sclerosis. Arch Neurol 55:793–798CrossRefPubMed Van Oosten BW, Barkhof F, Scholten PE, von Blomberg BM, Ader HJ, Polman CH (1998) Increased production of tumor necrosis factor alpha, and not of interferon gamma, preceding disease activity in patients with multiple sclerosis. Arch Neurol 55:793–798CrossRefPubMed
Metadata
Title
Detrimental and protective action of microglial extracellular vesicles on myelin lesions: astrocyte involvement in remyelination failure
Authors
Marta Lombardi
Roberta Parolisi
Federica Scaroni
Elisabetta Bonfanti
Alice Gualerzi
Martina Gabrielli
Nicole Kerlero de Rosbo
Antonio Uccelli
Paola Giussani
Paola Viani
Cecilia Garlanda
Maria P. Abbracchio
Linda Chaabane
Annalisa Buffo
Marta Fumagalli
Claudia Verderio
Publication date
01-12-2019
Publisher
Springer Berlin Heidelberg
Published in
Acta Neuropathologica / Issue 6/2019
Print ISSN: 0001-6322
Electronic ISSN: 1432-0533
DOI
https://doi.org/10.1007/s00401-019-02049-1

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