Globotriaosyl Ceramide Modulates Interferon-alpha-induced Growth Inhibition and CD19 Expression in Burkitt's Lymphoma Cells
Overview
Endocrinology
Authors
Affiliations
Previous studies have indicated that globotriaosyl ceramide (Gb3 or CD77) plays a role in alpha-interferon signal transduction and CD19-mediated homotypic adhesion in B cell lines derived from Burkitt's lymphoma. These roles for Gb3 may involve the proteins IFNAR-1 (subunit 1 of the interferon-alpha receptor) and CD19, respectively, both of which have potential Gb3-binding sites in their extracellular domains which resemble those of the verotoxin (Shiga toxin and Shiga-like toxin) B subunit. The majority of this work was performed using wild-type Daudi cells and a single, Gb3-deficient mutant cell line, VT500. In the present investigations, these and additional Daudi-derived cells with varying degrees of sensitivity to interferon-alpha were examined for Gb3 expression, interferon-induced growth inhibition and CD19 expression. The degree of interferon-induced growth inhibition and CD19 expression correlated with Gb3 expression in the various cell lines tested. In addition, reconstitution of the VT500 cell line with Gb3 but not other glycolipids partially restored the sensitivity of cells to IFN-induced growth inhibition. The degree to which reconstitution restored sensitivity to growth inhibition was similar to the results of previous studies in which Gb3 reconstitution restored sensitivity to verotoxin-induced cytotoxicity. These results demonstrate that Gb3 is specifically required for IFN-induced growth inhibition in Daudi cells and provide further evidence of a role for Gb3 in CD19 expression and function in these cells.
Sphingolipids and Lymphomas: A Double-Edged Sword.
Pherez-Farah A, Lopez-Sanchez R, Villela-Martinez L, Ortiz-Lopez R, Beltran B, Hernandez-Hernandez J Cancers (Basel). 2022; 14(9).
PMID: 35565181 PMC: 9104519. DOI: 10.3390/cancers14092051.
Molecular Biology of Shiga Toxins' Effects on Mammalian Cells.
Menge C Toxins (Basel). 2020; 12(5).
PMID: 32456125 PMC: 7290813. DOI: 10.3390/toxins12050345.
Vega G, Franco-Cea L, Huerta-Yepez S, Mayani H, Morrison S, Bonavida B Int J Oncol. 2015; 47(5):1735-48.
PMID: 26398317 PMC: 4735703. DOI: 10.3892/ijo.2015.3170.
Kerner K, Bridger P, Kopf G, Frohlich J, Barth S, Willems H Vet Res. 2015; 46:38.
PMID: 25889651 PMC: 4391668. DOI: 10.1186/s13567-015-0175-2.
Tumor-specific Hsp70 plasma membrane localization is enabled by the glycosphingolipid Gb3.
Gehrmann M, Liebisch G, Schmitz G, Anderson R, Steinem C, De Maio A PLoS One. 2008; 3(4):e1925.
PMID: 18382692 PMC: 2271151. DOI: 10.1371/journal.pone.0001925.