Adrenergic nerves activate an angio-metabolic switch in prostate cancer.

Adrenergic nerves activate an angio-metabolic switch in prostate cancer.
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肾上腺能神经激活前列腺癌中的血管代谢转换。

DOI:
10.1126/science.aah5072
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发表时间:
2017-10-20
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Frenette PS
Frenette PS
中科院分区:
其他
文献类型:
--
作者:
Zahalka AH;Arnal-Estapé A;Maryanovich M;Nakahara F;Cruz CD;Finley LWS;Frenette PS

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神经与血管密切相关,并有助于在发育过程中形成脉管系统。最近的研究表明,新形成的神经纤维可能调节肿瘤微环境,但其确切功能尚不清楚。通过研究前列腺癌小鼠模型,我们发现,前列腺基质中通过肾上腺素能神经源性去甲肾上腺素的内皮β-肾上腺素能受体信号传导对于激活血管生成开关至关重要,该开关可促进肿瘤指数生长。从机制上讲,这是通过改变内皮细胞代谢而发生的。内皮细胞通常依赖有氧糖酵解来进行血管生成。我们发现,内皮细胞Adrb 2(编码β2-肾上腺素能受体的基因)的缺失通过增强内皮细胞氧化磷酸化而导致血管生成抑制。Adrb 2和Cox 10(一种编码细胞色素IV氧化酶组装因子的基因)的共缺失阻止了Adrb 2缺失诱导的代谢转变,挽救了前列腺癌的进展。神经和内皮代谢之间的这种相互作用可能成为抗癌治疗的目标。
Nerves closely associate with blood vessels and help to pattern the vasculature during development. Recent work suggests that newly formed nerve fibers may regulate the tumor microenvironment, but their exact functions are unclear. Studying mouse models of prostate cancer, we show that endothelial β-adrenergic receptor signaling via adrenergic nerve-derived noradrenaline in the prostate stroma is critical for activation of an angiogenic switch that fuels exponential tumor growth. Mechanistically this occurs through alteration of endothelial cell metabolism. Endothelial cells typically rely on aerobic glycolysis for angiogenesis. We found that the loss of endothelial Adrb2, the gene encoding the β2-adrenergic receptor, leads to inhibition of angiogenesis through enhancement of endothelial oxidative phosphorylation. Co-deletion of Adrb2 and Cox10, a gene encoding a cytochrome IV oxidase assembly factor, prevented the metabolic shift induced by Adrb2 deletion and rescued prostate cancer progression. This cross-talk between nerves and endothelial metabolism could potentially be targeted as an anti-cancer therapy.
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