TY - JOUR
T1 - Amino Acid Restriction Triggers Angiogenesis via GCN2/ATF4 Regulation of VEGF and H2S Production
AU - Longchamp, Alban
AU - Mirabella, Teodelinda
AU - Arduini, Alessandro
AU - MacArthur, Michael R.
AU - Das, Abhirup
AU - Treviño-Villarreal, J. Humberto
AU - Hine, Christopher
AU - Ben-Sahra, Issam
AU - Knudsen, Nelson H.
AU - Brace, Lear E.
AU - Reynolds, Justin
AU - Mejia, Pedro
AU - Tao, Ming
AU - Sharma, Gaurav
AU - Wang, Rui
AU - Corpataux, Jean Marc
AU - Haefliger, Jacques Antoine
AU - Ahn, Kyo Han
AU - Lee, Chih Hao
AU - Manning, Brendan D.
AU - Sinclair, David A.
AU - Chen, Christopher S.
AU - Ozaki, C. Keith
AU - Mitchell, James R.
N1 - Funding Information:
We thank Florent Allagnat for critical discussions and reading the manuscript; Andrew Thompson, Nandan Nurukar, and Rohan Kulkarni for technical assistance; Gokhan Hotamisligil for the use of the Seahorse; John Asara for assistance with metabolomics; Frederick Bowman for the use of the laser Doppler imager; and Constance Cepko for the use of the two-photon microscope. This work was supported by grants from the Swiss National Science Foundation ( P1LAP3_158895 ) to A.L.; the National Science Foundation ( NSF-DGE1144152 ) to L.E.B.; the Canadian Institutes of Health Sciences to R.W.; the NIH ( EB00262 ) to C.S.C.; the American Heart Association ( 12GRNT9510001 and 12GRNT1207025 ), the Lea Carpenter du Pont Vascular Surgery Fund , and the Carl and Ruth Shapiro Family Foundation to C.K.O.; and the NIH ( AG036712 and DK090629 ) and the Charoen Pokphand Group to J.R.M.
Publisher Copyright:
© 2018 Elsevier Inc.
PY - 2018/3/22
Y1 - 2018/3/22
N2 - Angiogenesis, the formation of new blood vessels by endothelial cells (ECs), is an adaptive response to oxygen/nutrient deprivation orchestrated by vascular endothelial growth factor (VEGF) upon ischemia or exercise. Hypoxia is the best-understood trigger of VEGF expression via the transcription factor HIF1α. Nutrient deprivation is inseparable from hypoxia during ischemia, yet its role in angiogenesis is poorly characterized. Here, we identified sulfur amino acid restriction as a proangiogenic trigger, promoting increased VEGF expression, migration and sprouting in ECs in vitro, and increased capillary density in mouse skeletal muscle in vivo via the GCN2/ATF4 amino acid starvation response pathway independent of hypoxia or HIF1α. We also identified a requirement for cystathionine-γ-lyase in VEGF-dependent angiogenesis via increased hydrogen sulfide (H2S) production. H2S mediated its proangiogenic effects in part by inhibiting mitochondrial electron transport and oxidative phosphorylation, resulting in increased glucose uptake and glycolytic ATP production. Restricting dietary sulfur amino acids can trigger angiogenesis and improve vascular health.
AB - Angiogenesis, the formation of new blood vessels by endothelial cells (ECs), is an adaptive response to oxygen/nutrient deprivation orchestrated by vascular endothelial growth factor (VEGF) upon ischemia or exercise. Hypoxia is the best-understood trigger of VEGF expression via the transcription factor HIF1α. Nutrient deprivation is inseparable from hypoxia during ischemia, yet its role in angiogenesis is poorly characterized. Here, we identified sulfur amino acid restriction as a proangiogenic trigger, promoting increased VEGF expression, migration and sprouting in ECs in vitro, and increased capillary density in mouse skeletal muscle in vivo via the GCN2/ATF4 amino acid starvation response pathway independent of hypoxia or HIF1α. We also identified a requirement for cystathionine-γ-lyase in VEGF-dependent angiogenesis via increased hydrogen sulfide (H2S) production. H2S mediated its proangiogenic effects in part by inhibiting mitochondrial electron transport and oxidative phosphorylation, resulting in increased glucose uptake and glycolytic ATP production. Restricting dietary sulfur amino acids can trigger angiogenesis and improve vascular health.
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U2 - 10.1016/j.cell.2018.03.001
DO - 10.1016/j.cell.2018.03.001
M3 - Article
C2 - 29570992
AN - SCOPUS:85044166943
SN - 0092-8674
VL - 173
SP - 117-129.e14
JO - Cell
JF - Cell
IS - 1
ER -