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Ndrg2 deficiency ameliorates neurodegeneration in experimental autoimmune encephalomyelitis.
Le, Thuong Manh; Takarada-Iemata, Mika; Ta, Hieu Minh; Roboon, Jureepon; Ishii, Hiroshi; Tamatani, Takashi; Kitao, Yasuko; Hattori, Tsuyoshi; Hori, Osamu.
Afiliación
  • Le TM; Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan.
  • Takarada-Iemata M; Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan.
  • Ta HM; Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan.
  • Roboon J; Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan.
  • Ishii H; Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan.
  • Tamatani T; Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan.
  • Kitao Y; Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan.
  • Hattori T; Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan.
  • Hori O; Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa City, Ishikawa, Japan.
J Neurochem ; 145(2): 139-153, 2018 04.
Article en En | MEDLINE | ID: mdl-29315585
N-myc downstream-regulated gene 2 (NDRG2) is a differentiation- and stress-associated molecule that is predominantly expressed in astrocytes in the central nervous system. In this study, we examined the expression and role of NDRG2 in experimental autoimmune encephalomyelitis (EAE), which is an animal model of multiple sclerosis. Western blot and immunohistochemical analysis revealed that the expression of NDRG2 was observed in astrocytes of spinal cord, and was enhanced after EAE induction. A comparative analysis of wild-type and Ndrg2-/- mice revealed that deletion of Ndrg2 ameliorated the clinical symptoms of EAE. Although Ndrg2 deficiency only slightly affected the inflammatory response, based on the results of flow cytometry, qRT-PCR, and immunohistochemistry, it significantly reduced demyelination in the chronic phase, and, more importantly, neurodegeneration both in the acute and chronic phases. Further studies revealed that the expression of astrocytic glutamate transporters, including glutamate aspartate transporter (GLAST) and glutamate transporter 1, was more maintained in the Ndrg2-/- mice compared with wild-type mice after EAE induction. Consistent with these results, studies using cultured astrocytes revealed that Ndrg2 gene silencing increased the expression of GLAST, while NDRG2 over-expression decreased it without altering the expression of glial fibrillary acidic protein. The effect of NDRG2 on GLAST expression was associated with the activation of Akt, but not with the activation of nuclear factor-kappa B. These findings suggest that NDRG2 plays a key role in the pathology of EAE by modulating glutamate metabolism. Cover Image for this Issue: doi: 10.1111/jnc.14173.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas / Ácido Glutámico / Encefalomielitis Autoinmune Experimental / Degeneración Nerviosa Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: J Neurochem Año: 2018 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas / Ácido Glutámico / Encefalomielitis Autoinmune Experimental / Degeneración Nerviosa Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: J Neurochem Año: 2018 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Reino Unido