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Updated: Jun 2, 2026
10:05
Ganglioside Extraction, Purification and Profiling
Published on: March 12, 2021
Physiopathological function of hematoside (GM3 ganglioside)
1Division of Glycopathology, Institute of Molecular Biomembranes and Glycobiology, Tohoku Pharmaceutical University, Miyagi, Japan. jin@tohoku-pharm.ac.jp
Summary
Gangliosides, particularly GM3, are implicated in type 2 diabetes and insulin resistance by disrupting membrane microdomains. Gangliosides are also crucial for hearing, as shown by impaired auditory function in SAT-I knockout mice.
Area of Science:
- Biochemistry
- Cell Biology
- Physiology
Background:
- Gangliosides are crucial glycosphingolipids involved in various cellular functions.
- GM3 synthase (SAT-I) is the key enzyme in ganglioside biosynthesis.
- Aberrant ganglioside expression is increasingly linked to pathological conditions.
Purpose of the Study:
- To investigate the physiological and pathological roles of gangliosides, with a focus on GM3.
- To explore the link between gangliosides, insulin resistance, and type 2 diabetes.
- To determine the role of gangliosides in the auditory system.
Main Methods:
- Molecular cloning of GM3 synthase (SAT-I).
- Analysis of insulin receptor and ganglioside interactions in membrane microdomains.
- Behavioral and histological examination of SAT-I knockout mice.
Main Results:
- Demonstrated that type 2 diabetes and insulin resistance involve membrane microdomain disorders due to aberrant ganglioside expression.
- Showed that SAT-I knockout mice exhibit impaired hearing and degeneration of stereocilia in the organ of Corti.
- Established a direct link between gangliosides and auditory function.
Conclusions:
- Gangliosides play a critical role in maintaining normal insulin signaling and auditory function.
- Disruptions in ganglioside metabolism and expression contribute to lifestyle-related diseases like type 2 diabetes.
- Gangliosides are essential components of the auditory system, particularly for hair cell integrity.
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