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A study of cell membrane structure.

R Feinmesser1, J L Freeman, A Noyek

  • 1Department of Otolaryngology, Mount Sinai Hospital, Toronto, Canada.

Journal of Surgical Oncology
|March 1, 1990
PubMed
Summary
This summary is machine-generated.

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Changes in membrane carbohydrates, specifically B-D-Gal(1-3)DGal-NAc, occur early in laryngeal cancer development. This early event in tumourogenesis is not linked to metastasis or invasion severity.

Area of Science:

  • Oncology
  • Biochemistry
  • Cell Biology

Background:

  • Neoplastic transformation involves structural changes, including alterations in membrane carbohydrates.
  • The timing and impact of these carbohydrate changes on tumor progression, invasion, and metastasis remain unclear.

Purpose of the Study:

  • To identify specific membrane carbohydrate changes associated with laryngeal cancer.
  • To investigate the presence of these changes in relation to tumor characteristics like differentiation and metastatic potential.

Main Methods:

  • Analysis of membrane carbohydrate components in malignant and adjacent normal laryngeal tissues.
  • Comparison of carbohydrate profiles across tumors with varying differentiation and metastatic status.

Main Results:

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  • The B-D-Gal(1-3)DGal-NAc structure was identified in malignant laryngeal tissue but not in normal adjacent tissue.
  • This specific carbohydrate was present in both metastatic and nonmetastatic tumors, as well as in well-differentiated and poorly differentiated carcinomas.

Conclusions:

  • Alterations in cell membrane carbohydrate components, such as B-D-Gal(1-3)DGal-NAc, represent an early event in laryngeal cancer progression.
  • These early changes do not appear to correlate with the degree of tumor invasion or the capacity for metastasis.