Journal
CYTOKINE & GROWTH FACTOR REVIEWS
Volume 14, Issue 3-4, Pages 251-263Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S1359-6101(03)00027-3
Keywords
osteoclastogenesis; dendritic cell; T lymphocyte; osteoimmunology; tolerance
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As the TNF and TNFR superfamilies have grown to more than two dozen combined members over the past 30 years, their involvement in interactions between immune cells, with regard to the events governing cellular differentiation, activation, and survival have been well established. The recently identified TNF superfamily cytokine, TRANCE (RANKL/OPGL/ODF/TNFSF11), which interacts with two receptors-one functional, TRANCE-R (RANKfrNFRSF11A), and one decoy, OPG (TNFRSFI11B)-is a survival factor for activated dendritic cells, and may also be important for the maintenance of immune tolerance. TRANCE is also the key cytokine involved in osteoclast differentiation and activation, making TRANCE signaling crucial for proper bone homeostasis, and a potential therapeutic target in diseases such as osteoporosis, osteolytic metastatic cancer, arthritis, and periodontitis. Importantly, the positive role that TRANCE has in activating the immune system, appears to significantly contribute to pathologic bone loss. These observations have spurred intense study of the various ways in which the immune system can influence bone. Furthermore, TRANCE has also been demonstrated to play essential roles in the developmental processes leading to both lymph node formation, and the expansion and function of mammary glands during pregnancy and lactation. Thus, TRANCE is quickly emerging as a cytokine of significant importance to further understanding unique aspects of mammalian biology. (C) 2003 Elsevier Science Ltd. All rights reserved.
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