ArticlebioRxiv : the preprint server for biology2026
Blocking glutamine transport normalizes lymphatic vessels in hypoxic environments by attenuating glycolysis.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Dysfunctional lymphangiogenesis is a component of several diseases with hypoxic microenvironments, including secondary lymphedema and solid malignancies. These vessels are ineffective at draining interstitial fluid, resulting in complications such as increased inflammation, slowed wound healing, and, for cancer patients, increased risk of metastasis. Current treatments to normalize vasculature have negative effects on healthy vessels and do not specifically target lymphatic endothelial cells (LECs). As hypoxia is known to change endothelial cell metabolism, exploiting LEC-specific metabolic pathways may provide a focused approach to restoring lymphatic function in patients. However, outside of glycolysis, changes to LEC metabolism in hypoxic conditions are understudied. To address this gap in knowledge, we examined the impact of glutamine availability on factors critical to lymphangiogenesis, including glycolysis, cell proliferation, and migration. We found that increasing glutamine availability results in increased lactate production as well as a hypoxia-specific increase in glycolytic genes
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