PRAME anti-PRAME anti prame, MAPE, preferentially expressed antigen in melanoma, Preferentially expressed antigen of melanoma rabbit monoclonal antibody for immunohistochemistry IHC

PRAME Antibody Immunohistochemistry on a FFPE Melanoma Tissue

Specification Sheets
Safety Data Sheet


Intended Use For In Vitro Diagnostic Use
Summary and Explanation

PRAME is a new rabbit monoclonal antibody for immunohistochemistry from Bio SB. Melanoma antigen preferentially expressed in tumors is a protein that in humans is encoded by the PRAME gene. This gene encodes an antigen that is predominantly expressed in human melanomas and that is recognized by cytolytic T lymphocytes. It is not expressed in normal tissues, except in testis. This expression pattern is like that of other CT antigens, such as MAGE, BAGE and GAGE.   However, unlike these other CT antigens, this gene is also expressed in acute leukemias. PRAME overexpression in triple negative breast cancer has also been found to promote cancer cell motility through induction of the epithelial-to-mesenchymal transition.

PRAME mRNA expression is well documented in cutaneous and ocular melanomas. One study concluded that diffuse nuclear immunoreactivity for PRAME was found in 87% of metastatic and 83.2% of primary melanomas. Among melanoma subtypes, PRAME was diffusely expressed in 94.4% of acral melanomas, 92.5% of superficial spreading melanomas, 90% of nodular melanomas, 88.6% of lentigo maligna melanomas, and 35% of desmoplastic melanomas. When in situ and nondesmoplastic invasive melanoma components were present, PRAME expression was seen in both. Most Melanocytic nevi (86.4%), were completely negative for PRAME. Immunoreactivity for PRAME was seen, albeit usually only in a minor subpopulation of lesional melanocytes, in 13.6% of cutaneous nevi, including dysplastic nevi, common acquired nevi, traumatized/recurrent nevi, and Spitz nevi. Rare isolated junctional melanocytes with immunoreactivity for PRAME were also seen in solar lentigines and benign nonlesional skin. This study suggests that immunohistochemical analysis for PRAME expression may be useful for diagnostic purposes to support a suspected diagnosis of melanoma. It may also be valuable for margin assessment of a known PRAME-positive melanoma, but its expression in nevi, solar lentigines, and benign nonlesional skin can represent a challenge.

Antibody Type Rabbit Monoclonal Clone RBT-PRAME
Isotype IgG Reactivity Paraffin, Frozen
Localization Cytoplasmic, Nuclear Control Tonsil, Seminoma
Presentation Anti – PRAME is a rabbit monoclonal antibody for immunohistochemistry derived from cell culture supernatant that is concentrated, dialyzed, filter sterilized and diluted in buffer pH 7.5, containing BSA and sodium azide as a preservative.
Catalog No. Antibody Type Dilution Volume/QTY
BSB-2374-3 Prediluted Ready-To-Use 3.0 ml
BSB-2374-7 Prediluted Ready-To-Use 7.0 ml
BSB-2374-15 Prediluted Ready-To-Use 15.0 ml
BSB–2374-01 Concentrated 1:50-1:200 0.1 ml
BSB-2374-05 Concentrated 1:50-1:200 0.5 ml
BSB-2374-1 Concentrated 1:50-1:200 1.0 ml
BSB-2374-CS Control Slides 5
Note: For concentrated antibodies, please centrifuge prior to use to ensure recovery of all product.
Synonyms: anti-prame, anti prame, MAPE, melanoma antigen preferentially expressed in tumors, preferentially expressed antigen in melanoma, Preferentially expressed antigen of melanoma,
Related Products