Ramucirumab biosimilar, human VEGFR2 monoclonal antibody

Recombinant Human IgG1 Monoclonal Antibody.
Isotype: Human IgG1 kappa.
Source: The monoclonal antibody ramucirumab biosimilar was produced in mammalian cells.
Specificity/Sensitivity: The monoclonal antibody ramucirumab biosimilar specifically binds to the human VEGFR2 (KDR).
Applications: ELISA, neutralization, functional assays such as bioanalytical PK and ADA assays, and those assays for studying biological pathways affected by ramucirumab.
Form of Antibody: 0.2 uM filtered solution, pH 6.0, no stabilizers or preservatives.
Endotoxin: < 1 EU per 1 mg of the protein by the LAL method.
Purity: >95% by SDS-PAGE under reducing conditions and HPLC.

Shipping: The research grade ramucirumab biosimilar protein is shipped with ice pack. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70°C as supplied.
1 month from date of receipt, 2 to 8°C as supplied.

Background

What is ramucirumab biosimilar research grade? Research grade Ramucirumab biosimilar uses the same protein sequences as the therapeutic antibody ramucirumab. Ramucirumab, a fully human IgG1 monoclonal antibody and a direct VEGFR2 antagonist, binds with high affinity to the extracellular domain of VEGFR2 and block the binding of natural VEGFR ligands (VEGF-A, VEGF-C and VEGF-D). These ligands are secreted by solid tumors to promote angiogenesis (formation of new blood vessels from pre-existing ones) and enhance tumor blood supply. Binding of ramucirumab to VEGFR2 leads to inhibition of VEGF-mediated tumor angiogenesis.

Kinase insert domain receptor (KDR, a type IV receptor tyrosine kinase, CD309, cluster of differentiation 309, Flk1, Fetal Liver Kinase 1) is the human gene encoding vascular endothelial growth factor receptor 2 (VEGFR-2), which is a VEGF receptor. The Q472H germline KDR genetic variant affects VEGFR-2 phosphorylation and has been found to associate with microvessel density in NSCLC.