| Bioactivity | Petosemtamab (MCLA 158) is an anti- EGFR (Kd: 0.22 nM) and anti-LGR5 (Kd: 0.86 nM) monoclonal antibody (mAb). Petosemtamab leads to EGFR signaling blockade and receptor degradation in LGR5+ cancer cells. Petosemtamab can be used in the research of solid tumors, such as head and neck squamous cell carcinoma (HNSCC), metastatic colorectal cancer (CRC)[1][2]. |
| Invitro | MCLA-158 (1 µg/mL，24 或 72 小时) 导致 EGFR+/LGR5+ 结直肠癌类器官中的 EGFR 降解[2]。 Western Blot Analysis[2] Cell Line: |
| In Vivo | MCLA-158 (25 mg/kg/周，静脉注射，持续 6 周) 导致食管鳞癌、胃腺癌和头颈部 PDX 模型的肿瘤消退[2]。 Animal Model: |
| Name | Petosemtamab |
| CAS | 2213450-26-9 |
| Appearance | Liquid |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | Please store the product under the recommended conditions in the Certificate of Analysis. |
| Reference | [1]. Antoine Hollebecque, et al. Abstract P185: Preliminary antitumor activity of MCLA-158, an IgG1 bispecific antibody targeting EGFR and LGR5, in advanced head and neck squamous cell carcinoma. Mol Cancer Ther (2021) 20 (12_Supplement): P185. [2]. Guillem Argiles, et al. Phase I dose-escalation study of MCLA-158, a first-in-class bispecific antibody targeting EGFR and LGR5, in metastatic colorectal cancer (CRC). Journal of Clinical Oncology 39, no. 3_suppl |