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Targeting the lactate transporter MCT1 in endothelial cells inhibits lactate-induced HIF-1 activation and tumor angiogenesis.

Publication ,  Journal Article
Sonveaux, P; Copetti, T; De Saedeleer, CJ; Végran, F; Verrax, J; Kennedy, KM; Moon, EJ; Dhup, S; Danhier, P; Frérart, F; Gallez, B; Ribeiro, A ...
Published in: PLoS One
2012

Switching to a glycolytic metabolism is a rapid adaptation of tumor cells to hypoxia. Although this metabolic conversion may primarily represent a rescue pathway to meet the bioenergetic and biosynthetic demands of proliferating tumor cells, it also creates a gradient of lactate that mirrors the gradient of oxygen in tumors. More than a metabolic waste, the lactate anion is known to participate to cancer aggressiveness, in part through activation of the hypoxia-inducible factor-1 (HIF-1) pathway in tumor cells. Whether lactate may also directly favor HIF-1 activation in endothelial cells (ECs) thereby offering a new druggable option to block angiogenesis is however an unanswered question. In this study, we therefore focused on the role in ECs of monocarboxylate transporter 1 (MCT1) that we previously identified to be the main facilitator of lactate uptake in cancer cells. We found that blockade of lactate influx into ECs led to inhibition of HIF-1-dependent angiogenesis. Our demonstration is based on the unprecedented characterization of lactate-induced HIF-1 activation in normoxic ECs and the consecutive increase in vascular endothelial growth factor receptor 2 (VEGFR2) and basic fibroblast growth factor (bFGF) expression. Furthermore, using a variety of functional assays including endothelial cell migration and tubulogenesis together with in vivo imaging of tumor angiogenesis through intravital microscopy and immunohistochemistry, we documented that MCT1 blockers could act as bona fide HIF-1 inhibitors leading to anti-angiogenic effects. Together with the previous demonstration of MCT1 being a key regulator of lactate exchange between tumor cells, the current study identifies MCT1 inhibition as a therapeutic modality combining antimetabolic and anti-angiogenic activities.

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Published In

PLoS One

DOI

EISSN

1932-6203

Publication Date

2012

Volume

7

Issue

3

Start / End Page

e33418

Location

United States

Related Subject Headings

  • Vascular Endothelial Growth Factor Receptor-2
  • Symporters
  • RNA, Small Interfering
  • RNA Interference
  • Polymerase Chain Reaction
  • Nuclear Magnetic Resonance, Biomolecular
  • Neovascularization, Pathologic
  • Neoplasms
  • Monocarboxylic Acid Transporters
  • Mice
 

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Sonveaux, P., Copetti, T., De Saedeleer, C. J., Végran, F., Verrax, J., Kennedy, K. M., … Feron, O. (2012). Targeting the lactate transporter MCT1 in endothelial cells inhibits lactate-induced HIF-1 activation and tumor angiogenesis. PLoS One, 7(3), e33418. https://doi.org/10.1371/journal.pone.0033418
Sonveaux, Pierre, Tamara Copetti, Christophe J. De Saedeleer, Frédérique Végran, Julien Verrax, Kelly M. Kennedy, Eui Jung Moon, et al. “Targeting the lactate transporter MCT1 in endothelial cells inhibits lactate-induced HIF-1 activation and tumor angiogenesis.PLoS One 7, no. 3 (2012): e33418. https://doi.org/10.1371/journal.pone.0033418.
Sonveaux P, Copetti T, De Saedeleer CJ, Végran F, Verrax J, Kennedy KM, et al. Targeting the lactate transporter MCT1 in endothelial cells inhibits lactate-induced HIF-1 activation and tumor angiogenesis. PLoS One. 2012;7(3):e33418.
Sonveaux, Pierre, et al. “Targeting the lactate transporter MCT1 in endothelial cells inhibits lactate-induced HIF-1 activation and tumor angiogenesis.PLoS One, vol. 7, no. 3, 2012, p. e33418. Pubmed, doi:10.1371/journal.pone.0033418.
Sonveaux P, Copetti T, De Saedeleer CJ, Végran F, Verrax J, Kennedy KM, Moon EJ, Dhup S, Danhier P, Frérart F, Gallez B, Ribeiro A, Michiels C, Dewhirst MW, Feron O. Targeting the lactate transporter MCT1 in endothelial cells inhibits lactate-induced HIF-1 activation and tumor angiogenesis. PLoS One. 2012;7(3):e33418.

Published In

PLoS One

DOI

EISSN

1932-6203

Publication Date

2012

Volume

7

Issue

3

Start / End Page

e33418

Location

United States

Related Subject Headings

  • Vascular Endothelial Growth Factor Receptor-2
  • Symporters
  • RNA, Small Interfering
  • RNA Interference
  • Polymerase Chain Reaction
  • Nuclear Magnetic Resonance, Biomolecular
  • Neovascularization, Pathologic
  • Neoplasms
  • Monocarboxylic Acid Transporters
  • Mice