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PMID:10215628
| Citation |
Lomaga, MA, Yeh, WC, Sarosi, I, Duncan, GS, Furlonger, C, Ho, A, Morony, S, Capparelli, C, Van, G, Kaufman, S, van der Heiden, A, Itie, A, Wakeham, A, Khoo, W, Sasaki, T, Cao, Z, Penninger, JM, Paige, CJ, Lacey, DL, Dunstan, CR, Boyle, WJ, Goeddel, DV and Mak, TW (1999) TRAF6 deficiency results in osteopetrosis and defective interleukin-1, CD40, and LPS signaling. Genes Dev. 13:1015-24 |
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| Abstract |
Bone resorption and remodeling is an intricately controlled, physiological process that requires the function of osteoclasts. The processes governing both the differentiation and activation of osteoclasts involve signals induced by osteoprotegerin ligand (OPGL), a member of tumor necrosis factor (TNF) superfamily, and its cognate receptor RANK. The molecular mechanisms of the intracellular signal transduction remain to be elucidated. Here we report that mice deficient in TNF receptor-associated factor 6 (TRAF6) are osteopetrotic with defects in bone remodeling and tooth eruption due to impaired osteoclast function. Using in vitro assays, we demonstrate that TRAF6 is crucial not only in IL-1 and CD40 signaling but also, surprisingly, in LPS signaling. Furthermore, like TRAF2 and TRAF3, TRAF6 is essential for perinatal and postnatal survival. These findings establish unexpectedly diverse and critical roles for TRAF6 in perinatal and postnatal survival, bone metabolism, LPS, and cytokine signaling. |
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| Keywords |
Animals; Antigens, CD40/metabolism; B-Lymphocytes/metabolism; Calcium-Calmodulin-Dependent Protein Kinases/metabolism; Cell Division; Enzyme Activation; Female; Interleukin-1/metabolism; JNK Mitogen-Activated Protein Kinases; Lipopolysaccharides/metabolism; Lipopolysaccharides/pharmacology; Macrophages/enzymology; Mice; Mice, Knockout; Mitogen-Activated Protein Kinases; NF-kappa B/metabolism; Nitric Oxide Synthase/metabolism; Nitric Oxide Synthase Type II; Osteopetrosis/physiopathology; Proteins/genetics; Proteins/physiology; Signal Transduction; TNF Receptor-Associated Factor 6 |
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Significance
Annotations
| Gene product | Qualifier | GO ID | GO term name | Evidence Code | with/from | Aspect | Notes | Status |
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