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Related Concept Videos

Glucose Transporters01:27

Glucose Transporters

Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose.
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:

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Glucose transporter 1 expression in canine osteosarcoma.

J C Petty1, S E Lana, D H Thamm

  • 1Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1678, USA. jcpetty@lamar.colostate.edu

Veterinary and Comparative Oncology
|January 31, 2009
PubMed
Summary

Glucose transporter 1 (GLUT-1) is present in canine osteosarcomas (OSAs). However, GLUT-1 expression did not correlate with tumor necrosis or patient outcomes in this study.

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Area of Science:

  • Oncology
  • Molecular Biology

Background:

  • Tumor hypoxia is linked to treatment resistance and metastasis.
  • Hypoxia-inducible factor 1-alpha (HIF-1alpha) is a key regulator induced by hypoxia.
  • Glucose transporter 1 (GLUT-1) is a downstream target of HIF-1alpha, often overexpressed in cancers.

Purpose of the Study:

  • To investigate GLUT-1 expression in canine osteosarcomas (OSAs).
  • To determine the relationship between GLUT-1 expression and tumor necrosis.
  • To assess the correlation between GLUT-1 expression and patient outcomes (disease-free interval, survival time).

Main Methods:

  • Immunohistochemistry was used to evaluate GLUT-1 expression.
  • The study analyzed 44 histologically confirmed canine OSA samples.
  • Statistical analysis was performed to correlate GLUT-1 expression with clinical data.

Main Results:

  • GLUT-1 was expressed in 61% (27 out of 44) of canine OSA cases.
  • No significant statistical correlation was found between GLUT-1 expression and tumor necrosis.
  • GLUT-1 expression did not correlate with disease-free interval or survival time.

Conclusions:

  • GLUT-1 is expressed in canine appendicular osteosarcomas.
  • The study did not find a link between GLUT-1 expression and prognosis in canine OSAs.
  • Further research evaluating GLUT-1 and other HIF-1alpha pathway proteins is recommended.