Nutritional regulation of oligodendrocyte differentiation regulates perineuronal net remodeling in the median eminence.
Cell Rep
; 36(2): 109362, 2021 07 13.
Article
em En
| MEDLINE
| ID: mdl-34260928
The mediobasal hypothalamus (MBH; arcuate nucleus of the hypothalamus [ARH] and median eminence [ME]) is a key nutrient sensing site for the production of the complex homeostatic feedback responses required for the maintenance of energy balance. Here, we show that refeeding after an overnight fast rapidly triggers proliferation and differentiation of oligodendrocyte progenitors, leading to the production of new oligodendrocytes in the ME specifically. During this nutritional paradigm, ME perineuronal nets (PNNs), emerging regulators of ARH metabolic functions, are rapidly remodeled, and this process requires myelin regulatory factor (Myrf) in oligodendrocyte progenitors. In genetically obese ob/ob mice, nutritional regulations of ME oligodendrocyte differentiation and PNN remodeling are blunted, and enzymatic digestion of local PNN increases food intake and weight gain. We conclude that MBH PNNs are required for the maintenance of energy balance in lean mice and are remodeled in the adult ME by the nutritional control of oligodendrocyte differentiation.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Diferenciação Celular
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Oligodendroglia
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Eminência Mediana
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Rede Nervosa
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Fenômenos Fisiológicos da Nutrição
Limite:
Adult
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Animals
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Humans
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Male
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article