Talacotuzumab (JNJ 56022473; CSL 362) is an IgG1-type fully humanized CD123 neutralizing monoclonal antibody with a modified Fc structure. Talacotuzumab has KDs of 0.43 nM, 188 nM, 46 nM, and 16.8 nM for CD123, CD32b/c, CD16-158F, and CD16-158V, respectively. Talacotuzumab inhibits the binding of IL-3 to CD123, thereby antagonizing IL-3 signaling in target cells. Talacotuzumab mutates the Fc region to increase affinity for CD16 (FcγRIIIa), thereby enhancing antibody-dependent cell-mediated cytotoxicity (ADCC). Talacotuzumab is highly effective in reducing leukemic cell growth in an acute myeloid leukemia (AML) xenograft mouse model in vivo.
For reconstitution, we recommend adding sterile, distilled water to achieve a final antibody concentration. Gently shake it to solubilize the protein completely. Do not vortex.
Host
CHO
Alternative Names
JNJ-56022473, CSL362
Buffer System
100 mM Pro 20 mM Arg pH 5.0. No preservative!
Target Accession
P26951
Reactivity
Human
Conjugation
Unconjugated
Clonality
Monoclonal
Purification
Protein A
Isotype
IgG1
Application
ELISA, FACS, Kinetics, Functional assay, Animal Model
Biological Activity
Immobilized human IL 3Rα His at 2 ug/mL can bind Anti-IL-3Ra/CD123 Antibody (Talacotuzumab)