Simone Zocchi, Pauline Trichet, Paloma Guernalec, Manal Agdada, Ana Alonso Bartolomé, Vincent Ogor, Caroline Choisy, Carine Vias, Xavier Sabaté-Cadenas, Jean-Christophe Bories, Michele Goodhardt, Alena Shkumatava, David Garrick
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引用次数: 0
Abstract
Multiple myeloma (MM) is a malignancy of immunoglobulin-secreting plasma cells that represents 10% of all hematological cancers and remains essentially incurable, despite recent advances. Long non-coding RNAs (lncRNAs) are an important class of regulatory molecules that have been strongly implicated in the aetiology of MM. Colorectal Neoplasia Differentially Expressed (CRNDE) is one lncRNA that is upregulated in tumor plasma cells of MM patients and contributes to disease progression and outcome. In order to characterise the molecular mechanisms of CRNDE action in MM, here we have carried out a high-throughput screen to identify proteins interacting with this lncRNA inside cells. From the output of this screen, we demonstrate that in MM cells, CRNDE interacts with and stabilises the deacetylase protein SIRT1, previously identified as an important mediator of the Hedgehog (Hh) signalling pathway in MM. We further show that CRNDE exerts downstream effects on MM cell survival, tumorigenic potential, and stem-like properties via an effect on the SIRT1/Hh signalling axis. Our findings add to the molecular understanding of the pro-tumorigenic activity of CRNDE in MM and could have wider implications in other malignant diseases.
期刊介绍:
Title: Leukemia
Journal Overview:
Publishes high-quality, peer-reviewed research
Covers all aspects of research and treatment of leukemia and allied diseases
Includes studies of normal hemopoiesis due to comparative relevance
Topics of Interest:
Oncogenes
Growth factors
Stem cells
Leukemia genomics
Cell cycle
Signal transduction
Molecular targets for therapy
And more
Content Types:
Original research articles
Reviews
Letters
Correspondence
Comments elaborating on significant advances and covering topical issues