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Ganglioside Extraction, Purification and Profiling
Published on: March 12, 2021
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Sialyltransferase Activity Assay for Ganglioside GM3 Synthase
Kei-Ichiro Inamori1, Takahiro Nitta2, Fumi Shishido3
1Division of Glycopathology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai, Miyagi, Japan. kinamori@tohoku-mpu.ac.jp.
Methods in Molecular Biology (Clifton, N.J.)
|December 31, 2022
Summary
We developed a new assay to measure GM3 synthase (GM3S) activity, crucial for ganglioside biosynthesis. This method quantifies GM3S sialyltransferase activity in cells and tissues.
Area of Science:
- Biochemistry
- Glycobiology
- Enzymology
Background:
- GM3 synthase (GM3S) is a key sialyltransferase.
- It catalyzes the formation of ganglioside GM3, a precursor for complex gangliosides.
- Gangliosides play vital roles in cell signaling and development.
Purpose of the Study:
- To develop and validate a novel enzymatic assay for GM3S.
- To enable quantitative measurement of GM3S activity in biological samples.
Main Methods:
- Utilized a fluorescence-labeled alkyl lactoside as an acceptor substrate.
- Employed High-Performance Liquid Chromatography (HPLC) for product separation and quantification.
- Applied the assay to assess GM3S activity in cultured cells and mouse brain tissues.
Main Results:
- Successfully established a quantitative method for GM3S enzymatic assay.
- Demonstrated the applicability of the assay in complex biological matrices.
- The assay provides a reliable tool for studying GM3S function.
Conclusions:
- The described fluorescence-based HPLC assay is effective for measuring GM3S activity.
- This method facilitates research into ganglioside metabolism and function.
- It is suitable for applications in cell biology and neuroscience research.
