| First Author | Wong BW | Year | 2017 |
| Journal | Nature | Volume | 542 |
| Issue | 7639 | Pages | 49-54 |
| PubMed ID | 28024299 | Mgi Jnum | J:244845 |
| Mgi Id | MGI:5913624 | Doi | 10.1038/nature21028 |
| Citation | Wong BW, et al. (2017) The role of fatty acid beta-oxidation in lymphangiogenesis. Nature 542(7639):49-54 |
| abstractText | Lymphatic vessels are lined by lymphatic endothelial cells (LECs), and are critical for health. However, the role of metabolism in lymphatic development has not yet been elucidated. Here we report that in transgenic mouse models, LEC-specific loss of CPT1A, a rate-controlling enzyme in fatty acid beta-oxidation, impairs lymphatic development. LECs use fatty acid beta-oxidation to proliferate and for epigenetic regulation of lymphatic marker expression during LEC differentiation. Mechanistically, the transcription factor PROX1 upregulates CPT1A expression, which increases acetyl coenzyme A production dependent on fatty acid beta-oxidation. Acetyl coenzyme A is used by the histone acetyltransferase p300 to acetylate histones at lymphangiogenic genes. PROX1-p300 interaction facilitates preferential histone acetylation at PROX1-target genes. Through this metabolism-dependent mechanism, PROX1 mediates epigenetic changes that promote lymphangiogenesis. Notably, blockade of CPT1 enzymes inhibits injury-induced lymphangiogenesis, and replenishing acetyl coenzyme A by supplementing acetate rescues this process in vivo. |
