KB-1587

CDP7657-hIgG1

45956

Background of CDP7657-hIgG1

CD40 ligand (CD40L) blockade has demonstrated efficacy in experimental autoimmune models. However, clinical trials of hu5c8, an anti-human CD40L IgG1 antibody, in systemic lupus erythematosus (SLE) were halted due to an increased incidence of thrombotic events. CDP7657 dose-dependently inhibited antigen-specific immune responses to tetanus toxoid in Cynomolgus monkeys, and in contrast to hu5c8, there was no evidence of pulmonary thrombovasculopathy in Rhesus monkeys. Aglycosyl hu5c8, which lacks Fc receptor binding function, also failed to induce thrombotic events in Rhesus monkeys. In vitro experiments confirmed that antibody constructs lacking an Fc, including CDP7657, did not induce human or monkey platelet activation.

Specifications

Catalog Number	KB-1587
Antibody Name	CDP7657-hIgG1
Isotype	Human IgG1,kappa
FC Muations	Wild Type
Target	CD40L
Species Reactivity	Human
Host Cell Line	EXPI CHO
Purification Method	Affinity purified
Concentration	>2 mg/mL
Formulation	50 mM sodium citrate,150mM NaCl,pH5.5
Purity	>95% by SDS-PAGE and SEC-HPLC
Validation	ELISA
Endotoxin Level	<0.2 EU/mg as determined by the LAL method
Sterility	0.2μm filtered
Storage	It is recommended that the protein should be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Stability	Stable for twelve months from date of receipt when stored at -20°C to -80°C; Stored at 2-8°C for one month without detectable loss of activity.

Characterization

Application

References

Shock A, Burkly L, Wakefield I, Peters C, Garber E, Ferrant J, Taylor FR, Su L, Hsu YM, Hutto D, Amirkhosravi A, Meyer T, Francis J, Malcolm S, Robinson M, Brown D, Shaw S, Foulkes R, Lawson A, Harari O, Bourne T, Maloney A, Weir N. CDP7657, an anti-CD40L antibody lacking an Fc domain, inhibits CD40L-dependent immune responses without thrombotic complications: an in vivo study. Arthritis Res Ther. 2015 Sep 3;17(1):234.
Tocoian A, Buchan P, Kirby H, Soranson J, Zamacona M, Walley R, Mitchell N, Esfandiari E, Wagner F, Oliver R. First-in-human trial of the safety, pharmacokinetics and immunogenicity of a PEGylated anti-CD40L antibody fragment (CDP7657) in healthy individuals and patients with systemic lupus erythematosus. Lupus. 2015 Sep;24(10):1045-56.