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  • Title: Appearance of a novel type of ganglioside (GD1 alpha) in a differentiation-resistant clone of mouse myeloid leukemia cells, M1-R1.
    Author: Taki T, Maeda H, Arai K, Matsumoto M, Kon K, Ando S.
    Journal: Cell Struct Funct; 1988 Feb; 13(1):61-72. PubMed ID: 3163528.
    Abstract:
    Glycolipid compositions of three mouse myeloid leukemia cell clones, two that are sensitive to differentiation inducers (M1-T22 and M1-S1) and one that is differentiation-resistant (M1-R1), have been compared. The T22 and S1 clones contained glucosylceramide (GlcCer), lactosylceramide (LacCer) and gangliotriaosylceramide (Gg3Cer) as the major neutral glycolipids. The differentiation resistant clone, R1, was characterized by the appearance of globotriaosylceramide (Gb3Cer) and a decrease of Gg3Cer. There was a distinct difference in the ganglioside profile between the differentiation-inducible and -resistant clones: T22 and S1 cells contained no detectable amounts of ganglioside, whereas six different gangliosides were detected in the R1 clone. These gangliosides were isolated and identified as GM3, GM2, GM1a, GD1a, GM1b, and a unique disialoganglioside, GD1 alpha, having the following structure: (formula; see text) Based on these comparative studies, the relationship between the glycolipid composition and the differentiation potential of leukemia cells is discussed.
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