脂肪酸β氧化在淋巴血管生成中的作用
Brian W Wong1,2, Xingwu Wang1,2, Annalisa Zecchin1,2
1Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, KU Leuven, Leuven B-3000, Belgium.
Nature
|December 27, 2016
概括
通过CPT1A调节的脂肪酸代谢对淋巴发育和淋巴内皮细胞 (LEC) 的表观遗传控制至关重要. 这一过程涉及PROX1和基因素乙化,影响淋巴血管生成.
科学领域:
- 分子生物学
- 发育生物学
- 细胞生物学
背景情况:
- 这些对健康至关重要的淋巴血管由淋巴内皮细胞 (LEC) 覆盖.
- 淋巴发育的代谢基础在很大程度上仍未被探索.
- 脂肪酸氧化是细胞过程中具有潜在作用的关键代谢途径.
研究的目的:
- 研究新陈代谢,特别是脂肪酸氧化在淋巴发育中的作用.
- 阐明代谢影响淋巴内皮细胞功能和分化的分子机制.
- 确定CPT1A的一个关键代谢酶对淋巴血管形成的影响.
主要方法:
- 使用LEC特异性CPT1A损失的转基因小鼠模型.
- 分析了LEC的扩散和分化标志物.
- 研究了PROX1,CPT1A,乙-CoA和基因素乙化之间的相互作用.
- 使用乙酸补充剂检查受伤诱导的淋巴血管生成和救援实验.
主要成果:
- 特定于LEC的CPT1A损失会影响淋巴发育.
- LEC依赖脂肪酸β-氧化进行增殖和表观遗传调节的分化.
- 在淋巴血管基因中,PROX1提高了CPT1A的调节,增加了乙-CoA的基因乙化.
- 阻断CPT1可以抑制受伤诱导的淋巴血管生成,而这种淋巴血管形成被酸盐所挽救.
结论:
- 脂肪酸氧化对淋巴发育和功能至关重要.
- 通过PROX1-CPT1A-乙-CoA途径调节淋巴血管生成的表观遗传控制.
- 针对脂肪酸代谢为淋巴细胞疾病提供了潜在的治疗策略.
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