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Published on: October 20, 2023
Gangliosides as Signaling Regulators in Cancer
Norihiko Sasaki1, Masashi Toyoda1, Toshiyuki Ishiwata2
1Research Team for Geriatric Medicine (Vascular Medicine), Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan.
Abstract:
At the plasma membrane, gangliosides, a group of glycosphingolipids, are expressed along with glycosphingolipids, phospholipids, and cholesterol in so-called lipid rafts that interact with signaling receptors and related molecules. Most cancers present abnormalities in the intracellular signal transduction system involved in tumor growth, invasion, and metastasis. To date, the roles of gangliosides as regulators of signal transduction have been reported in several cancer types. Gangliosides can be expressed by the exogenous ganglioside addition, with their endogenous expression regulated at the enzymatic level by targeting specific glycosyltransferases. Accordingly, the relationship between changes in the composition of cell surface gangliosides and signal transduction has been investigated by controlling ganglioside expression. In cancer cells, several types of signaling molecules are positively or negatively regulated by ganglioside expression levels, promoting malignant properties. Moreover, antibodies against gangliosides have been shown to possess cytotoxic effects on ganglioside-expressing cancer cells. In the present review, we highlight the involvement of gangliosides in the regulation of cancer cell signaling, and we explore possible therapies targeting ganglioside-expressing cancer.
Insights
Gangliosides, crucial cell surface molecules, regulate cancer signaling pathways. Targeting these molecules shows promise for novel cancer therapies.
Area of Science:
- Biochemistry
- Cell Biology
- Oncology
Background:
- Gangliosides are glycosphingolipids found in plasma membrane lipid rafts, interacting with signaling receptors.
- Cancer cells often exhibit aberrant intracellular signal transduction, impacting tumor progression.
- Gangliosides are implicated as regulators of signal transduction in various cancer types.
Purpose of the Study:
- To review the involvement of gangliosides in regulating cancer cell signaling.
- To explore potential therapeutic strategies targeting ganglioside-expressing cancers.
Main Methods:
- Investigating the relationship between cell surface ganglioside composition and signal transduction by controlling ganglioside expression.
- Examining the effects of ganglioside expression levels on signaling molecules in cancer cells.
- Reviewing studies on antibodies targeting gangliosides for cytotoxic effects on cancer cells.
Main Results:
- Ganglioside expression levels positively or negatively regulate various signaling molecules in cancer cells, promoting malignancy.
- Exogenous ganglioside addition and enzymatic regulation of endogenous expression are methods to study these effects.
- Antibodies targeting gangliosides demonstrate cytotoxic effects on cancer cells expressing them.
Conclusions:
- Gangliosides play a significant role in regulating cancer cell signaling pathways.
- Targeting gangliosides presents a promising avenue for developing novel cancer therapies.
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