Receptor activator of nuclear factor kappa-Β ligand (RANKL), also known as tumor necrosis factor ligand superfamily member 11 (TNFSF11), TNF-related activation-induced cytokine (TRANCE), osteoprotegerin ligand (OPGL), and osteoclast differentiation factor (ODF), is a protein that in humans is encoded by the TNFSF11gene.[5][6]
RANKL is known as a type II membrane protein and is a member of the tumor necrosis factor (TNF) superfamily.[7] RANKL has been identified to affect the immune system and control bone regeneration and remodeling. RANKL is an apoptosis regulator gene, a binding partner of osteoprotegerin (OPG), a ligand for the receptor RANK and controls cell proliferation by modifying protein levels of Id4, Id2 and cyclin D1.[8][9] RANKL is expressed in several tissues and organs including: skeletal muscle, thymus, liver, colon, small intestine, adrenal gland, osteoblast, mammary gland epithelial cells, prostate and pancreas.[9] Variation in concentration levels of RANKL throughout several organs reconfirms the importance of RANKL in tissue growth (particularly bone growth) and immune functions within the body.
^Anderson DM, Maraskovsky E, Billingsley WL, Dougall WC, Tometsko ME, Roux ER, et al. (November 1997). "A homologue of the TNF receptor and its ligand enhance T-cell growth and dendritic-cell function". Nature. 390 (6656): 175–179. Bibcode:1997Natur.390..175A. doi:10.1038/36593. PMID9367155. S2CID4373990.
^ abWada T, Nakashima T, Hiroshi N, Penninger JM (January 2006). "RANKL-RANK signaling in osteoclastogenesis and bone disease". Trends in Molecular Medicine. 12 (1): 17–25. doi:10.1016/j.molmed.2005.11.007. PMID16356770.