Bone morphogenetic proteins induce apoptosis in multiple myeloma cells by Smad-dependent repression of MYC.
Summary of "Bone morphogenetic proteins induce apoptosis in multiple myeloma cells by Smad-dependent repression of MYC."
Bone morphogenetic proteins (BMPs) have been shown to induce apoptosis and growth arrest in myeloma cells. However, the molecular mechanisms behind these events are not known. The MYC oncogene is a master regulator of cell growth and protein synthesis and MYC overexpression has been proposed to be associated with the progression of multiple myeloma. Here, we show that BMP-induced apoptosis in myeloma cells is dependent on downregulation of MYC. Moreover, the results suggest that targeting the MYC addiction in multiple myeloma is an efficient way of killing a majority of primary myeloma clones. We also found that myeloma cells harboring immunoglobulin (IG)-MYC translocations evaded BMP-induced apoptosis, suggesting a novel way for myeloma cells to overcome potential tumor suppression by BMPs.Leukemia advance online publication, 23 September 2011; doi:10.1038/leu.2011.263.
Affiliation
Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.
Journal Details
This article was published in the following journal.
Name: Leukemia : official journal of the Leukemia Society of America, Leukemia Research Fund, U.K
ISSN: 1476-5551
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21941367
- DOI: http://dx.doi.org/10.1038/leu.2011.263
Medical and Biotech [MESH] Definitions
Myeloma Proteins
Abnormal immunoglobulins characteristic of MULTIPLE MYELOMA.
Bone Morphogenetic Protein Receptors, Type I
A subtype of bone morphogenetic protein receptors with high affinity for BONE MORPHOGENETIC PROTEINS. They can interact with and undergo PHOSPHORYLATION by BONE MORPHOGENETIC PROTEIN RECEPTORS, TYPE II. They signal primarily through RECEPTOR-REGULATED SMAD PROTEINS.
Leukemia, Plasma Cell
A rare, aggressive variant of MULTIPLE MYELOMA characterized by the circulation of excessive PLASMA CELLS in the peripheral blood. It can be a primary manifestation of multiple myeloma or develop as a terminal complication during the disease.
Bone Marrow Neoplasms
Neoplasms located in the bone marrow. They are differentiated from neoplasms composed of bone marrow cells, such as MULTIPLE MYELOMA. Most bone marrow neoplasms are metastatic.
Bone Morphogenetic Protein Receptors, Type Ii
A subtype of bone morphogenetic protein receptors with low affinity for BONE MORPHOGENETIC PROTEINS. They are constitutively active PROTEIN-SERINE-THREONINE KINASES that can interact with and phosphorylate TYPE I BONE MORPHOGENETIC PROTEIN RECEPTORS.
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