Monoclonal antibody that defines human myoepithelium.
We have isolated a mouse monoclonal antibody that, upon immunohistochemical localization in frozen sections, displays specificity for human myoepithelial cells in the resting mammary gland, sweat glands, and salivary glands. Furthermore, this antibody was strongly and homogeneously reactive with frozen sections of 3 of 60 breast carcinoma specimens. Using immunolocalization techniques in conjunction with polyacrylamide gel electrophoresis, we have determined that the reactivity of this monoclonal antibody is directed toward a 51,000-dalton keratin polypeptide. The potential uses of this antibody in the prognosis of human mammary carcinoma and in understanding the role of the myoepithelium in development and differentiation are discussed.
S H
SH
Dairkee
C
C
Blayney
H S
HS
Smith
A J
AJ
Hackett
D000818:Animals; D000911:Antibodies, Monoclonal / Q000302:isolation & purification*; D001940:Breast / Q000276:immunology* / Q000648:ultrastructure; D001943:Breast Neoplasms / Q000145:classification / Q000276:immunology; D002277:Carcinoma / Q000276:immunology; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000276:immunology; D002454:Cell Differentiation; D004591:Electrophoresis, Polyacrylamide Gel; D004848:Epithelium / Q000276:immunology*; D006801:Humans; D007633:Keratins / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C / Q000276:immunology; D009363:Neoplasm Proteins / Q000276:immunology; D012469:Salivary Glands / Q000276:immunology / Q000648:ultrastructure; D013545:Sweat Glands / Q000276:immunology / Q000648:ultrastructure
D000911:Antibodies, Monoclonal; D009363:Neoplasm Proteins; D007633:Keratins