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Updated: May 18, 2026
11:36
Glycan Node Analysis: A Bottom-up Approach to Glycomics
Published on: May 22, 2016
Tumor defense systems using O-glycans
1Department of Biochemistry, Oyokyo Kidney Research Institute, 90 Kozawa, Yamazaki, Hirosaki, Aomori 036–8243, Japan. tsuboi@oyokyo.jp
Biological & Pharmaceutical Bulletin
|October 6, 2012
Summary
Tumor cells use core2 O-glycans, a type of cell-surface carbohydrate, to evade natural killer (NK) cell attacks. This defense mechanism aids tumor cells in surviving circulation and establishing metastasis.
Area of Science:
- Immunology
- Cancer Biology
- Glycobiology
Background:
- Hematogenous tumor metastasis involves tumor cells entering circulation and facing immune surveillance.
- Natural killer (NK) cells are crucial innate immune components that reject tumors and suppress metastasis.
- Tumor cells must develop mechanisms to evade NK cell-mediated rejection to establish metastasis.
Purpose of the Study:
- To review the defense systems employed by tumor cells against NK cell immunity.
- To elucidate the role of core2 O-glycans in tumor cell survival and metastasis.
Main Methods:
- This review synthesizes recent findings on tumor cell defense mechanisms.
- Focuses on cell-surface carbohydrates, specifically core2 O-glycans.
Main Results:
- Tumor cells expressing core2 O-glycans evade NK cell-mediated rejection.
- Core2 O-glycans facilitate tumor cell survival in host circulation.
- Expression of core2 O-glycans is linked to high-metastatic phenotypes.
Conclusions:
- Core2 O-glycans represent a significant defense strategy for tumor cells against NK cell surveillance.
- Understanding these mechanisms can inform strategies to combat cancer metastasis.
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