RANK ligand (RANKL), also called TRANCE, OPGL and ODF, is a member of the TNF family that is expressed in activated T cells, lymph nodes and in stromal cell lines. RANKL (TRANCE) interacts with its receptor RANK expressed on mature dendritic cells (DC) and mature osteoclasts, leading to the inhibition of apoptosis, probably through the upregulation of bcl-x. RANKL is, therefore, a useful tool for enhancing DC and osteoclast survival and activity. Osteoprotegerin (OPG) is a potent inhibitor of RANKL.
Historical data has shown that the biological activity of RANKL supports the survival of dendritic cells and osteoclasts.
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Figure 2: Binding of rhsRANKL to Osteoprotegerin. Recombinant, human sRANKL binds to Osteoprotegerin:Fc (see Prod. No. ALX-522-007).Method: Ligand binding assay: 96 well ELISA plates were coated O/N with 50 ng OPG-Fc (Prod. No. ALX-522-007) per well. After a blocking step

Figure 3: Mononuclear cells differentiate into Osteoclasts in the presence of M-CSF and RANKL, Soluble (human) (recombinant) (ALX-522-012). Method: Human CD14+ mononuclear cells isolated from adult peripheral blood were cultured in control medium (upper panel), in 25ng/ml M-CSF (middle panel), or in 25ng/ml M-CSF plus 50ng/ml RANKL (lower panel). Osteoclasts were identified as Tartrate-Resistant Acid Phosphatase (TRAP)-positive multinucleated cells. Osteoclasts were detected exclusively in presence of RANKL and in these culture conditions (M-CSF + RANKL), cells fused and generated multinucleated dark red TRAP-positive cells (arrows). Nuclei were stained with haematoxylin. Original magnification: 200x. Picture courtesy of V.Kindler and D.Suvà, University of Geneva.“””,RANKL (soluble) (human)




Product Details
Alternative Name |
TRANCE, OPGL, ODF, TNFSF 11, CD254 |
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Application Notes |
ELISA: binds to RANK receptor. |
Concentration |
0.1mg/ml after reconstitution. |
Endotoxin Content |
<0.1EU/µg purified protein (LAL test; Associates of Cape Cod). |
Formulation |
Lyophilized. Contains PBS. |
MW |
~18kDa (non-glycosylated), ~28kDa (glycosylated) (SDS-PAGE). |
Purity |
≥90% (SDS-PAGE) |
Reconstitution |
Reconstitute with 100µl sterile water. Further dilutions should be made with medium containing 5% fetal calf serum or a carrier protein. |
Solubility |
Soluble in water. |
Source |
Produced in HEK 293 cells. The extracellular domain of human RANKL (aa 152-317) is fused at the N-terminus to a linker peptide (6 aa) and a FLAG®-tag. |
Specificity |
Binds to human and mouse RANK. |
Technical Info / Product Notes |
FLAG is a registered trademark of Sigma-Aldrich Co. |
UniProt ID |
O14788 |
Handling & Storage
Use/Stability |
Stable for at least 6 months after receipt when stored at -20°C. |
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Handling |
Avoid freeze/thaw cycles. After reconstitution, prepare aliquots and store at -20°C. |
Long Term Storage |
-20°C |
Shipping |
Blue Ice |
Regulatory Status |
RUO – Research Use Only |
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- An in vitro model for discovery of osteoclast specific biomarkers towards identification of racehorses at risk for catastrophic fractures: G. Malek, et al.; Equine Vet. J. 1111, evj.13600 (2022), Abstract
- Synthetic ligands of death receptor 5 display a cell-selective agonistic effect at different oligomerization levels: J. Beyrath, et al.; Oncotarget 7, 64942 (2016), Abstract — Full Text
- Porous gelatin/tricalcium phosphate/genipin composites containing lumbrokinase for bone repair: Y.T. Fu, et al.; Bone 78, 15 (2015), Abstract
- XPO1/CRM1-selective inhibitors of nuclear export (SINE) reduce tumor spreading and improve overall survival in preclinical models of prostate cancer (PCa): G.L. Gravina, et al.; J. Hematol. Oncol. 7, 46 (2014), Abstract — Full Text
- Earthworm (Pheretima aspergillum) extract stimulates osteoblast activity and inhibits osteoclast differentiation: Y.T. Fu, et al.; BMC Complement. Altern. Med. 14, 440 (2014), Abstract — Full Text
- R848, a toll-like receptor 7 agonist, inhibits osteoclast differentiation but not survival or bone-resorbing function of mature osteoclasts: A. Miyamoto, et al.; Cytotechnology 64, 331 (2012), Abstract — Full Text
- Crosstalk of osteoblast and osteoclast precursors on mineralized collagen–towards an in vitro model for bone remodeling: A. Bernhardt, et al.; J. Biomed. Mater. Res. A 95, 848 (2010), Abstract
- Icariin inhibits the osteoclast formation induced by RANKL and macrophage-colony stimulating factor in mouse bone marrow culture: K.M. Chen, et al.; Pharmazie 62, 388 (2007), Abstract
- Induction of Cell Cycle Arrest and Apoptosis by the Proteasome Inhibitor PS-341 in Hodgkin Disease Cell Lines Is Independent of Inhibitor of Nuclear Factor-kappaB Mutations or Activation of the CD30, CD40, and RANK Receptors: B. Zheng, et al.; Clin. Cancer Res. 10, 3207 (2004), Abstract
- A novel in vivo role for osteoprotegerin ligand in activation of monocyte effector function and inflammatory response: D. Seshasayee, et al.; J. Biol. Chem. 279, 30202 (2004), Abstract
- Suppression of IL-12 Production by Soluble CD40 Ligand: Evidence for Involvement of the p44/42 Mitogen-Activated Protein Kinase Pathway: M. Wittmann, et al.; J. Immunol. 168, 3793 (2002), Abstract
- Receptor activator of NF-κB and osteoprotegerin expression by human microvascular endothelial cells, regulation by inflammatory cytokines, and role in human osteoclastogenesis: P. Collin-Osdoby, et al.; J. Biol. Chem. 276, 20659 (2001), Abstract — Full Text
- Functional expression of receptor activator of nuclear factor kappaB in Hodgkin disease cell lines: P. Fiumara, et al.; Blood 98, 2784 (2001), Abstract — Full Text
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