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Mouse liver gangliosides.

M Suzuki, K Nakamura, Y Hashimoto

    Carbohydrate Research
    |August 15, 1986
    PubMed
    Summary

    Researchers identified major mouse liver gangliosides, including GM3(NeuAc) and various NeuGc-containing forms. Polymorphic variations in ganglioside composition were observed across different mouse strains.

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    Area of Science:

    • Biochemistry
    • Glycobiology
    • Mammalian Genetics

    Background:

    • Gangliosides are complex glycosphingolipids crucial for cellular functions.
    • Understanding ganglioside profiles in different mouse strains is vital for biological research.

    Purpose of the Study:

    • To purify and structurally characterize major gangliosides in mouse liver.
    • To investigate polymorphic variations in liver ganglioside composition among inbred mouse strains.

    Main Methods:

    • Thin-layer chromatography (TLC)
    • Gas-liquid chromatography (GLC)
    • Sialidase treatment
    • Methylation analysis
    • Proton nuclear magnetic resonance (1H-NMR) spectroscopy
    • Negative-ion fast-atom bombardment mass spectrometry (FAB-MS)

    Main Results:

    • Identified GM3(NeuAc), GM3(NeuGc), GM2(NeuGc), GM1(NeuGc), and GDla(NeuGc, NeuGc) in mouse liver.
    • Confirmed structures of GM2(NeuGc), GM1(NeuGc), and GDla(NeuGc, NeuGc) using 1H-NMR.
    • Further validated GM3(NeuGc), GM2(NeuGc), and GM1(NeuGc) structures via FAB-MS.
    • Demonstrated strain-specific ganglioside profiles, with GM3(NeuGc) dominant in WHT/Ht, GM2(NeuGc) in BALB/c and C3H/He, and a mix in ICR mice.
    • Excluding GM3(NeuAc), N-acetylneuraminic acid-containing gangliosides were not major components in the analyzed strains.

    Conclusions:

    • Mouse liver ganglioside composition exhibits significant polymorphic variation across inbred strains.
    • NeuGc-containing gangliosides are the predominant forms in the analyzed mouse liver samples.
    • The characterized gangliosides provide a foundation for further studies on their biological roles and strain-specific differences.

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