Activin A promotes multiple myeloma-induced osteolysis and is a promising target for myeloma bone disease

Understanding the pathogenesis of cancer-related bone disease is crucial to the discovery of new therapies. Here we identify activin A, a TGF-β family member, as a therapeutically amenable target exploited by multiple myeloma (MM) to alter its microenvironmental niche favoring osteolysis. Increased...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 2010-03, Vol.107 (11), p.5124-5129
Hauptverfasser: Vallet, Sonia, Mukherjee, Siddhartha, Vaghela, Nileshwari, Hideshima, Teru, Fulciniti, Mariateresa, Pozzi, Samantha, Santo, Loredana, Cirstea, Diana, Patel, Kishan, Sohani, Aliyah R, Guimaraes, Alex, Xie, Wanling, Chauhan, Dharminder, Schoonmaker, Jesse A, Attar, Eyal, Churchill, Michael, Weller, Edie, Munshi, Nikhil, Seehra, Jasbir S, Weissleder, Ralph, Anderson, Kenneth C, Scadden, David T, Raje, Noopur
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container_end_page 5129
container_issue 11
container_start_page 5124
container_title Proceedings of the National Academy of Sciences - PNAS
container_volume 107
creator Vallet, Sonia
Mukherjee, Siddhartha
Vaghela, Nileshwari
Hideshima, Teru
Fulciniti, Mariateresa
Pozzi, Samantha
Santo, Loredana
Cirstea, Diana
Patel, Kishan
Sohani, Aliyah R
Guimaraes, Alex
Xie, Wanling
Chauhan, Dharminder
Schoonmaker, Jesse A
Attar, Eyal
Churchill, Michael
Weller, Edie
Munshi, Nikhil
Seehra, Jasbir S
Weissleder, Ralph
Anderson, Kenneth C
Scadden, David T
Raje, Noopur
description Understanding the pathogenesis of cancer-related bone disease is crucial to the discovery of new therapies. Here we identify activin A, a TGF-β family member, as a therapeutically amenable target exploited by multiple myeloma (MM) to alter its microenvironmental niche favoring osteolysis. Increased bone marrow plasma activin A levels were found in MM patients with osteolytic disease. MM cell engagement of marrow stromal cells enhanced activin A secretion via adhesion-mediated JNK activation. Activin A, in turn, inhibited osteoblast differentiation via SMAD2-dependent distal-less homeobox-5 down-regulation. Targeting activin A by a soluble decoy receptor reversed osteoblast inhibition, ameliorated MM bone disease, and inhibited tumor growth in an in vivo humanized MM model, setting the stage for testing in human clinical trials.
doi_str_mv 10.1073/pnas.0911929107
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subjects Activins - antagonists & inhibitors
Activins - metabolism
Activins - secretion
Animals
Biological Sciences
Bone diseases
Bone marrow
Bone Marrow Cells - pathology
Bone Marrow Cells - secretion
Bones
Cancer
Cancer therapies
Cell Differentiation
Cell Line, Tumor
Cell lines
Cells
Cytokines
Disease models
Down-Regulation
Enzyme Activation
Homeodomain Proteins - metabolism
Humans
JNK Mitogen-Activated Protein Kinases - metabolism
Mice
Multiple Myeloma - complications
Multiple Myeloma - enzymology
Multiple Myeloma - pathology
Osteoblasts - pathology
Osteolysis
Osteolysis - etiology
Osteolysis - pathology
Plasma
Proteins
Receptors
Receptors, Cell Surface - metabolism
Secretion
Smad2 Protein - metabolism
Stromal Cells - pathology
Stromal Cells - secretion
Tumors
title Activin A promotes multiple myeloma-induced osteolysis and is a promising target for myeloma bone disease
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