Transplanted hypothalamic neurons restore leptin signaling and ameliorate obesity in db/db mice.
Transplanted hypothalamic neurons restore leptin signaling and ameliorate obesity in db/db mice.
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DOI:
10.1126/science.1209870
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发表时间:
2011-11-25
期刊:
影响因子:
--
通讯作者:
Macklis JD
中科院分区:
文献类型:
--
作者:
Czupryn A;Zhou YD;Chen X;McNay D;Anderson MP;Flier JS;Macklis JD
Evolutionarily old and conserved homeostatic systems in the brain, including hypothalamus, are organized into nuclear structures of heterogeneous and diverse neuron populations. To investigate whether such circuits can be functionally reconstituted by synaptic integration of similarly diverse populations of neurons, we generated physically chimeric hypothalami by micro-transplanting small numbers of embryonic enhanced green fluorescent protein-expressing leptin-responsive hypothalamic cells into hypothalami of postnatal leptin receptor-deficient (db/db) mice that develop morbid obesity. Donor neurons differentiated and integrated as four distinct hypothalamic neuron subtypes, formed functional excitatory and inhibitory synapses, partially restored leptin responsiveness, and ameliorated hyperglycemia and obesity in db/db mice. These experiments serve as proof of concept that transplanted neurons can functionally reconstitute complex neuronal circuitry in the mammalian brain.
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