| Field | Specification |
|---|---|
| Target | |
| Alternative names | Mesothelin;CAK1 antigen;Pre-pro-megakaryocyte-potentiating factor;Megakaryocyte-potentiating factor;MPF;Mesothelin, cleaved form;MSLN;MPF; |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human Mesothelin recombinant protein (Position: K306-L576). Human Mesothelin shares 57% and 56% amino acid (aa) sequence identity with mouse and rat Mesothelin, respectively. |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody targets mesothelin (gene MSLN) in human samples and is validated for ELISA, flow cytometry, IHC, ICC/IF and Western blot. The predicted molecular weight is 69.0 kDa, and the supplier reports an observed band at about 69 kDa.
Mesothelin (MSLN) is a GPI-anchored glycoprotein normally found on mesothelial cells that line the pleura, peritoneum and pericardium. It is made as a precursor that is cut into membrane-bound mesothelin and a secreted fragment called megakaryocyte-potentiating factor, and it is widely studied because it is highly expressed in mesothelioma and in pancreatic and ovarian cancers.
| Target | Mesothelin (gene MSLN; UniProt Q13421, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human |
| Form | Lyophilized |
| Formulation | Per vial: 0.9 mg NaCl; 0.2 mg Na2HPO4; 0.05 mg NaN3; plus stabilizers |
| Calculated MW | 69.0 kDa |
| Observed MW | 69 kDa |
| Storage | As supplied: −20 °C for up to 12 months from receipt. After reconstitution: 4 °C for up to 1 month, or aliquot and keep at −20 °C for up to 6 months. Avoid repeated freeze–thaw cycles. |
Validated Applications
| ELISA | 0.1–0.5 µg/mL |
|---|---|
| IHC (paraffin sections) | 0.5–1 µg/mL (Human) |
| Western blot | 0.1–0.5 µg/mL (Human) |
| IHC (frozen sections) | 0.5–1 µg/mL (Human) |
| Immunocytochemistry / Immunofluorescence | 0.5–1 µg/mL (Human) |
| Flow cytometry (fixed cells) | 1–3 µg/1×106 cells (Human) |
Samples with a confirmed band (WB): human HeLa cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE under reducing conditions, 50 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 0.5 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:10000, ECL detection.
Samples with confirmed staining (IHC): human lung cancer tissue.
Recommended antigen retrieval: heat-mediated, in TE buffer (pH 9.0); citrate buffer (pH 6.0) can be used instead.
Conditions in the example images (IHC): heat-mediated antigen retrieval in citrate buffer (pH 6).
Samples with a confirmed signal (flow cytometry): SiHa cells.
Immunogen
Recombinant human Mesothelin fragment (Lys306–Leu576), expressed in E. coli. Sequence identity with the mouse and rat orthologs: 57% and 56%, respectively.
Reactivity Notes
The supplier lists reactivity with human. UniProt places mesothelin in the cell membrane, Golgi apparatus and SUBCELLULAR LOCATION:. Tissue expression noted by UniProt (human): Expressed in lung. The samples tested by the supplier (listed above) are a practical starting point for positive controls.
Safety
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
N’Guessan Émilien et al. (2025) Comparative theranostic efficacy of 177Lu- and 161Tb-labeled A1K2 SdAb in mesothelin-positive tumors. European Journal of Nuclear Medicine and Molecular Imaging. 10.1007/s00259-025-07723-z
