MRC Metabolic Diseases Unit, University of Cambridge Metabolic Research Laboratories, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.
Flow Cytometry Core, Cambridge Institute of Medical Research, University of Cambridge, Cambridge CB2 0QQ, UK.
Mol Metab. 2017 Mar 1;6(5):383-392. doi: 10.1016/j.molmet.2017.02.007. eCollection 2017 May.
Arcuate proopiomelanocortin (POMC) neurons are critical nodes in the control of body weight. Often characterized simply as direct targets for leptin, recent data suggest a more complex architecture.
Using single cell RNA sequencing, we have generated an atlas of gene expression in murine POMC neurons.
Of 163 neurons, 118 expressed high levels of with little/no expression and were considered "canonical" POMC neurons (P). The other 45/163 expressed low levels of and high levels of (AP). Unbiased clustering analysis of P neurons revealed four different classes, each with distinct cell surface receptor gene expression profiles. Further, only 12% (14/118) of P neurons expressed the leptin receptor () compared with 58% (26/45) of AP neurons. In contrast, the insulin receptor () was expressed at similar frequency on P and AP neurons (64% and 55%, respectively).
These data reveal arcuate POMC neurons to be a highly heterogeneous population. : GSE92707.
弓状核促黑皮质素原(POMC)神经元是体重控制的关键节点。这些神经元通常被简单地描述为瘦素的直接靶点,但最近的数据表明其结构更为复杂。
我们使用单细胞 RNA 测序,生成了小鼠 POMC 神经元基因表达图谱。
在 163 个神经元中,有 118 个神经元高水平表达 ,而几乎没有/没有表达 ,被认为是“经典”的 POMC 神经元(P 型)。其余 45/163 个神经元低水平表达 ,高水平表达 (AP 型)。对 P 型神经元进行无偏聚类分析,揭示了四个不同的细胞群,每个细胞群都具有独特的细胞表面受体基因表达谱。此外,只有 12%(14/118)的 P 型神经元表达瘦素受体(),而 58%(26/45)的 AP 型神经元表达 。相比之下,胰岛素受体()在 P 型和 AP 型神经元上的表达频率相似(分别为 64%和 55%)。
这些数据显示,弓状核 POMC 神经元是一个高度异质的群体。