Astrocyte-targeted Overproduction of IL-10 Reduces Neurodegeneration after TBI
Shanaki-Barvasad, Mahsa (Universitat Autònoma de Barcelona. Institut de Neurociències)
Almolda Ardid, Beatriz (Universitat Autònoma de Barcelona. Departament de Biologia Cel·lular, de Fisiologia i d'Immunologia)
González, Berta (Universitat Autònoma de Barcelona. Departament de Bioquímica i de Biologia Molecular)
Castellano López, Bernardo (Universitat Autònoma de Barcelona. Institut de Neurociències)

Data:	2022
Resum:	Traumatic brain injury is the greatest cause of disability and death in young adults in the developed world. The outcome for a TBI patient is determined by the severity of the injury, not only from the initial insult but, especially, as a product of the secondary injury. It is proposed that this secondary injury is directly linked to neuro-inflammation, with the production of pro-inflammatory mediators, activation of resident glial cells and infiltration of peripheral immune cells. In this context, anti-inflammatory treatments are one of the most promising therapies to dampen the inflammatory response associated with TBI and to reduce secondary injury. In this sense, the main objective of the present study is to elucidate the effect of local production of IL-10 in the neurological outcome after TBI. For this purpose, a cryogenic lesion was caused in transgenic animals overproducing IL-10 under the GFAP promoter on astrocytes (GFAP-IL10Tg mice) and the neuro-protection, microglial activation and leukocyte recruitment were evaluated. Our results showed a protective effect of IL-10 on neurons at early time-points after TBI, in correlation with a shift in the microglial activation profile towards a down-regulating phenotype and lower production of pro-inflammatory cytokines. Concomitantly, we observed a reduction in the BBB leakage together with modifications in leukocyte infiltration into the affected area. In conclusion, local IL-10 production modifies the neuro-inflammatory response after TBI, shifting it to anti-inflammatory and neuro-protective conditions. These results point to IL-10 as a promising candidate to improve neuro-inflammation associated with TBI.
Ajuts:	Ministerio de Economía y Competitividad BFU2014-55459 Agencia Estatal de Investigación BFU2017-87843-R
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Microglia ; Neuro-inflammatory response ; Leukocytes ; Neuro-degeneration ; IL-10R ; Cytokines
Publicat a:	Experimental Neurobiology, Vol. 31, Num. 3 (June 2022) , p. 173-195, ISSN 2093-8144

DOI: 10.5607/en21035
PMID: 35786640

23 p, 5.2 MB

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