Key Product Details

Species Reactivity

Human

Applications

Immunocytochemistry

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG2B Clone # 618924
View all Mesothelin Primary Antibodies »

Product Specifications

Immunogen

Mouse myeloma cell line, NS0-derived human Mesothelin
Glu296-Gly580
Accession # Q13421

Specificity

Detects human Mesothelin in direct ELISA.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2B

Scientific Data Images for Human Mesothelin Antibody

Detection of Mesothelin in Capan-2 (positive) and K562 cells (negative).

Mesothelin was detected in immersion fixed Capan‑2 human pancreatic adenocarcinoma cells (positive), and absent in K562 human chronic myelogenous leukemia cells (negative) using Mouse Anti-Human Mesothelin Monoclonal Antibody (Catalog # MAB11417) at 8 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to cell cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.

Applications for Human Mesothelin Antibody

Application
Recommended Usage

Immunocytochemistry

8-25 µg/mL
Sample: Immersion fixed Capan‑2 human pancreatic adenocarcinoma cells (positive), and K562 human chronic myelogenous leukemia cells (negative)

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Calculators

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: Mesothelin

Mesothelin, also known as CAK1 and ERC, is derived from a 70 kDa precursor that also includes Megakaryocyte Potentiating Factor (MPF) (1-3). The 70 kDa precursor is expressed on the cell surface where it is cleaved at a dibasic proteolytic site to release the 32 kDa glycosylated MPF (3, 4). MPF is a cytokine that potentiates IL-3 induced megakaryocyte colony formation (2, 5). The term Mesothelin refers to the 40 kDa glycosylated protein which remains attached to the cell surface via a GPI linkage. Alternate splicing generates additional Mesothelin isoforms that have either an eight amino acid insertion following Ser408 or a substituted C‑terminal region with no GPI anchor (6). This recombinant human Mesothelin lacks the 8 aa insertion, and within aa 296-580 it shares 59% sequence identity with mouse and rat Mesothelin. Mesothelin is normally expressed on mesothelial cells in the pleura, pericardium, and peritoneum as well as in the developing and postnatal pancreas (1, 7). It is up‑regulated in mesotheliomas and a range of carcinomas and adenomas (8 ‑ 11). Mesothelin promotes tumor cell proliferation, migration, anchorage-independent growth, and tumor progression (10, 12). It is coexpressed with the tumor antigen CA125/MUC16 on advanced ovarian adenocarcinomas and interacts with this molecule to support cell adhesion (13). A soluble form of Mesothelin is released from tumor cells into the serum or tissue effusions (11, 14, 15).

References

  1. Hassan, R. et al. (2004) Clin. Cancer Res. 10:3937.
  2. Kojima, T. et al. (1995) J. Biol. Chem. 270:21984.
  3. Chang, K. and I. Pastan (1996) Proc. Natl. Acad. Sci. 93:136.
  4. Onda, M. et al. (2006) Clin. Cancer Res. 12:4225.
  5. Yamaguchi, N. et al. (1994) J. Biol. Chem. 269:805.
  6. Muminova, Z.E. et al. (2004) BMC Cancer 4:19.
  7. Hou, L.-Q. et al. (2008) Develop. Growth Differ. 50:531.
  8. Ordonez, N.G. (2003) Mod. Pathol. 16:192.
  9. Argani, P. et al. (2001) Clin. Cancer Res. 7:3862.
  10. Li, M. et al. (2008) Mol. Cancer Ther. 7:286.
  11. Scholler, N. et al. (1999) Proc. Natl. Acad. Sci. 96:11531.
  12. Uehara, N. et al. (2008) Mol. Cancer Res. 6:186.
  13. Rump, A. et al. (2004) J. Biol. Chem. 279:9190.
  14. Ho, M. and M.O. Lively (2006) Cancer Epidemiol. Biomarkers Prev. 15:1751.
  15. Robinson, B.W.S. et al. (2003) Lancet 362:1612.

Alternate Names

CAK1, MPF, MSLN, SMR

Entrez Gene IDs

10232 (Human); 56047 (Mouse); 60333 (Rat); 102130460 (Cynomolgus Monkey)

Gene Symbol

MSLN

UniProt

Q13421

Additional Mesothelin Products

Product Documents for Human Mesothelin Antibody

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human Mesothelin Antibody

For research use only

Related Research Areas

Cancer Biomarkers

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