A neuroprotective astrocyte state is induced by neuronal signal EphB1 but fails in ALS models

0481621 - ÚEM 2018 RIV GB eng J - Článek v odborném periodiku
Tyzack, G.E. - Hall, E.C. - Sibley, Ch.R. - Cymes, T. - Forostyak, Serhiy - Carlino, G. - Meyer, I.F. - Schiavo, G. - Zhang, S.Ch. - Gibbons, G.M. - Newcombe, J. - Patani, R. - Lakatos, A.
A neuroprotective astrocyte state is induced by neuronal signal EphB1 but fails in ALS models.
Nature Communications. Roč. 8, oct. (2017), s. 1164. E-ISSN 2041-1723
Grant CEP: GA ČR(CZ) GA17-21146S
Institucionální podpora: RVO:68378041
Klíčová slova: amyotrophic-lateral-sclerosis * facial motor nucleus * spinal-cord-injury
Obor OECD: Neurosciences (including psychophysiology
Impakt faktor: 12.353, rok: 2017

Astrocyte responses to neuronal injury may be beneficial or detrimental to neuronal recovery, but the mechanisms that determine these different responses are poorly understood. Here we show that ephrin type-B receptor 1 (EphB1) is upregulated in injured motor neurons, which in turn can activate astrocytes through ephrin-B1-mediated stimulation of signal transducer and activator of transcription-3 (STAT3). Transcriptional analysis shows that EphB1 induces a protective and anti-inflammatory signature in astrocytes, partially linked to the STAT3 network. This is distinct from the response evoked by interleukin (IL)-6 that is known to induce both pro inflammatory and anti-inflammatory processes. Finally, we demonstrate that the EphB1-ephrin-B1 pathway is disrupted in human stem cell derived astrocyte and mouse models of amyotrophic lateral sclerosis (ALS). Our work identifies an early neuronal help-me signal that activates a neuroprotective astrocytic response, which fails in ALS, and therefore represents an attractive therapeutic target.
Trvalý link: http://hdl.handle.net/11104/0277154