Catalog No.

KDG32202

Stability and Storage

The stability of ELISA kit is determined by the loss rate of activity. The loss rate of this kit is less than 10% prior to the expiration date under appropriate storage condition.

Detection method

Colorimetric

Precision

CV<20%

Sample type

Plasma, Serum

Assay type

Quantitative

Sensitivity

0.156 μg/ml

Range

0.31-5 μg/mL

Recovery

80-120%

Specifications

Simlukafusp Alfa

Alternative Names

FAP-IL2v, RO6874281/RG7461

Background

Simlukafusp alfa (FAP-IL2v, RO6874281/RG7461) is an immunocytokine comprising an antibody against fibroblast activation protein 偽 (FAP) and an IL-2 variant with a retained affinity for IL-2R尾緯 > IL-2 R尾緯 and abolished binding to IL-2 R偽. Here, we investigated the immunostimulatory properties of FAP-IL2v and its combination with programmed cell death protein 1 (PD-1) checkpoint inhibition, CD40 agonism, T cell bispecific and antibody-dependent cellular cytotoxicity (ADCC)-mediating antibodies. The binding and immunostimulatory properties of FAP-IL2v were investigated in vitro and compared with FAP-IL2wt. Tumor targeting was investigated in tumor-bearing mice and in a rhesus monkey. The ability of FAP-IL2v to potentiate the efficacy of different immunotherapies was investigated in different xenograft and syngeneic murine tumor models. FAP-IL2v bound IL-2 R尾緯 and FAP with high affinity in vitro, inducing dose-dependent proliferation of natural killer (NK) cells and CD4+/CD8+ T cells while being significantly less potent than FAP-IL2wt in activating immunosuppressive regulatory T cells (Tregs). T cells activated by FAP-IL2v were less sensitive to Fas-mediated apoptosis than those activated by FAP-IL2wt. Imaging studies demonstrated improved tumor targeting of FAP-IL2v compared to FAP-IL2wt. Furthermore, FAP-IL2v significantly enhanced the in vitro and in vivo activity of therapeutic antibodies that mediate antibody-dependent or T cell-dependent cellular cytotoxicity (TDCC) and of programmed death-ligand 1 (PD-L1) checkpoint inhibition. The triple combination of FAP-IL2v with an anti-PD-L1 antibody and an agonistic CD40 antibody was most efficacious. These data indicate that FAP-IL2v is a potent immunocytokine that potentiates the efficacy of different T- and NK-cell-based cancer immunotherapies.

Shipping

2-8 ℃

Note

For Research Use Only.

Aiming to develop the most reliable bioreagents, AntibodySystem SAS was founded in 2019 in France by a team of professionals from top industrial companies and research institutes. The collective scientific and technical experiences in our team have brought breaking throughs in multiple product developments, including recombinant antibodies, recombinant proteins, biosimilar, RUO ELISA kits and other related products. By working with talented researchers and technicians, AntibodySystem continues to upgrade product qualities and lower the overall cost, offering accountable and affordable solutions for biolabs all over the world. Since its establishment, AntibodySystem has built long term and stable collaborations with academia, pharmaceutical industry, biotech companies and research hospitals, supporting their R&D by AntibodySystem's bioreagents with excellent data accuracy and reproducibility.

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