MUC1 Antibody (SM3) - BSA Free

Novus Biologicals, part of Bio-Techne | Catalog # NB120-22711

Novus Biologicals, part of Bio-Techne

Key Product Details

Species Reactivity

Validated:

Human, Mouse

Cited:

Human, Mouse

Applications

Validated:

ELISA, Flow Cytometry, Immunocytochemistry/Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin

Cited:

ELISA, Flow Cytometry, IF/IHC, Immunohistochemistry

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG2a Kappa Clone # SM3

Format

BSA Free

Concentration

1.0 mg/ml

View all MUC-1 Antibodies »

Product Summary for MUC1 Antibody (SM3) - BSA Free

Immunogen

Hydrogen fluoride deglycosylated milk mucin.

Reactivity Notes

Mouse reactivity reported in scientific literature (PMID: 1372533) No record of testing in other species.

Localization

Cell Membrane and Cytoplasmic

Specificity

Reacts very little with normal tissue. Found to react with breast, colon and ovarian carcinomas and adinocarcinoma. SM3 recognises the under-glycosylated form of MUC1 and is therefore tumour specific.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2a Kappa

Scientific Data Images for MUC1 Antibody (SM3) - BSA Free

Immunocytochemistry/Immunofluorescence: MUC-1 Antibody (SM3) [NB120-22711] - MCF7 cells were fixed for 10 minutes using 10% formalin and then permeabilized for 5 minutes using 1X PBS + 0.05% Triton-X100. The cells were incubated with anti-MUC1 [SM3] at 5 ug/ml overnight at 4C and detected with an anti-mouse IgG Dylight 488 (Green) at a 1:500 dilution. Nuclei were counterstained with DAPI (Blue). Cells were imaged using a 40X objective.
Immunohistochemistry-Paraffin: MUC-1 Antibody (SM3) [NB120-22711] - IHC analysis of formalin fixed paraffin embedded tissue section of human breast cancer xenograft using MUC-1 antibody clone SM3 at 1:10 dilution. The xenograft section depicted a very specific and intense signal in the periphery of the cancer cells. The necrotic cells also developed a strong immune-positivity while the tumor stroma as well as the nuclei of cells were negative for immunostaining.
Flow Cytometry: MUC1 Antibody (SM3) - BSA Free [NB120-22711] - An intracellular stain was performed on MCF7 cells with MUC1 Antibody (SM3) NB120-22711AF700 (blue) and a matched isotype control (orange). Cells were fixed with 4% PFA and then permeabilized with 0.1% saponin. Cells were incubated in an antibody dilution of 5 ug/mL for 30 minutes at room temperature. Both antibodies were conjugated to Alexa Fluor 700.
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Applications for MUC1 Antibody (SM3) - BSA Free

Application
Recommended Usage

ELISA

reported in multiple pieces of scientific literature

Flow Cytometry

reported in multiple pieces of scientific literature

Immunocytochemistry/Immunofluorescence

10 ug/ml

Immunohistochemistry

1:10-1:500

Immunohistochemistry-Frozen

1:10-1:500

Immunohistochemistry-Paraffin

1:10-1:500
Application Notes
IHC-Fr and IHC-P: Use at an assay dependent dilution.
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Protein G purified

Formulation

PBS

Format

BSA Free

Preservative

0.02% Sodium Azide

Concentration

1.0 mg/ml

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: MUC-1

Mucin 1 (MUC1), also known as episialin, EMA (epithelial membrane antigen), PEM (polymorphic epithelial mucin), and CA-15-3 antigen, is a membrane-bound type I transmembrane glycoprotein (1,2). MUC1 is typically expressed in the luminal or glandular epithelial cells of the gastrointestinal tract, breast, lungs, and more, and is often overexpressed in epithelial cancers, but also serves a protective role against infection and helps regulate inflammatory response (2,3). Human MUC1 is 1255 amino acids (aa) in length with a theoretical molecular weight of 122 kDa; however, depending on the amount of glycosylation can weigh between 250 - 500 kDa (2,4). Structurally, MUC1 consists of a N-terminal domain which contains a signal peptide, a variable number tandem repeat region (VNTR), and a SEA domain, as well a C-terminal domain which has the extracellular domain (ECD), transmembrane domain (TMD), and cytoplasmic tail (CT) (2,3). The VNTR is comprised of between 25 - 125 repeats of a 20 aa conserved sequence (3). MUC1 is heavily O-glycosylated in the VNTR and has moderate N-glycosylation sites following the VNTR and in the ECD (2). Glycosylation contributes to MUC1's functional properties (2). The MUC1 gene contains seven exons, giving rise to several MUC1 isoforms as a result of alternative splicing (2).

Overexpression of mucins, including MUC1, is a feature of many epithelial cancers (1,3,5,6). The presence of truncated glycan structures called tumor-associated carbohydrate antigens (TACAs) on MUC1 play a role in cancer progression and a loss of apical-basal polarity (5). Carbohydrate-binding partners called lectins are the primary binding partners of TACAs that give rise to the pro-tumor microenvironment and metastasis (5). Given this unique feature, TACAs are a potential target for cancer immunotherapies (5). There are a number of vaccines, drugs, and antibodies targeting MUC1 for treatment of a variety of cancers including breast, lung, and prostate (6). In addition to a role in cancer progression, MUC1, and specifically the CT portion, has been shown to have a positive, anti-inflammatory role in a variety of lung and airway infections (7).

References

1. Khodabakhsh, F., Merikhian, P., Eisavand, M. R., & Farahmand, L. (2021). Crosstalk between MUC1 and VEGF in angiogenesis and metastasis: a review highlighting roles of the MUC1 with an emphasis on metastatic and angiogenic signaling. Cancer cell international. https://doi.org/10.1186/s12935-021-01899-8

2. Nath, S., & Mukherjee, P. (2014). MUC1: a multifaceted oncoprotein with a key role in cancer progression. Trends in molecular medicine. https://doi.org/10.1016/j.molmed.2014.02.007

3. Dhar, P., & McAuley, J. (2019). The Role of the Cell Surface Mucin MUC1 as a Barrier to Infection and Regulator of Inflammation. Frontiers in cellular and infection microbiology. https://doi.org/10.3389/fcimb.2019.00117

4. Uniprot (P15941)

5. Beckwith, D. M., & Cudic, M. (2020). Tumor-associated O-glycans of MUC1: Carriers of the glyco-code and targets for cancer vaccine design. Seminars in immunology. https://doi.org/10.1016/j.smim.2020.101389

6. Almasmoum H. (2021). The Roles of Transmembrane Mucins Located on Chromosome 7q22.1 in Colorectal Cancer. Cancer management and research. https://doi.org/10.2147/CMAR.S299089

7. Ballester, B., Milara, J., & Cortijo, J. (2021). The role of mucin 1 in respiratory diseases. European respiratory review : an official journal of the European Respiratory Society. https://doi.org/10.1183/16000617.0149-2020

Long Name

Mucin 1, Cell Surface-associated

Alternate Names

CD227, Episialin, H23AG, KL-6, Mucin-1, PEM, PEMT

Entrez Gene IDs

4582 (Human)

Gene Symbol

MUC1

UniProt

P15941 (Human)

Additional MUC-1 Products

Product Documents for MUC1 Antibody (SM3) - BSA Free

Product Datasheets

Certificate of Analysis

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Product Specific Notices for MUC1 Antibody (SM3) - BSA Free

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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