Isolation of differentially expressed genes in NPM-ALK-positive anaplastic large cell lymphoma
| Autor: | Claire, Villalva, Pascal, Trempat, Catherine, Greenland, Charles, Thomas, Jean Philippe, Girard, Fabian, Moebius, Georges, Delsol, Pierre, Brousset |
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| Rok vydání: | 2002 |
| Předmět: |
Male
DNA Complementary DNA Repair Blotting Western Gene Expression Nuclear Proteins Receptor Protein-Tyrosine Kinases Apoptosis Steroid Isomerases DNA Neoplasm Protein-Tyrosine Kinases Blotting Northern Translocation Genetic Neoplasm Proteins Chromosomes Human Pair 2 Tumor Cells Cultured Chromosomes Human Pair 5 Humans Anaplastic Lymphoma Kinase Lymphoma Large B-Cell Diffuse Carrier Proteins Child Nucleophosmin Gene Library |
| Zdroj: | British journal of haematology. 118(3) |
| ISSN: | 0007-1048 |
| Popis: | In this study, we used subtractive suppression hybridization to compare gene expression between an ALK-positive anaplastic large cell lymphoma (ALCL)-derived cell line and a clinical case of ALK-negative ALCL. Construction and screening of a subtracted library resulted in the cloning of 29 cDNAs which were differentially expressed. Most of these clones corresponded to novel genes with unknown function (EST) or to genes implicated in the differentiation, activation or signalling of T cells such as Ran/TC4, interleukin 1-receptor, thymosin beta4, thymosin beta10, moesin and cytohesin-1. Other genes involved in the regulation of apoptosis, such as human inhibitor of apoptosis-1 (HIAP-1), Bax inhibitor-1 and MCL-1, or DNA repair, such as poly (ADP-ribose) polymerase 1 (PARP-1), X-associated protein-1 (XAP-1), SUMO-1 (sentrin-1) and RanGTPase-activating protein 1 (RanGAP-1), were isolated. Interestingly, we found that both RNA and protein levels of human sterol isomerase (hSI), also referred to as emopamil binding protein (EBP), were overexpressed in ALK+ tumours. This protein is involved in the biosynthesis of cholesterol and may be activated by NPM-ALK. Overall, our results suggest that all the genes described above are upregulated in the NPM-ALK-driven transformation process, and that moesin and cytohesin-1 may be more specifically implicated in a signalling pathway involving PLCgamma and PI3K. |
| Databáze: | OpenAIRE |
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