TY - JOUR
T1 - Quantitative dot blot analyses of blood‐group‐related antigens in paired normal and malignant human breast tissues
AU - Ura, Yasuaki
AU - Dion, Arnold S.
AU - Williams, Charlene J.
AU - Olsen, Brian D.
AU - Redfield, Ernest S.
AU - Ishida, Masao
AU - Herlyn, Meenhard
AU - Major, Pierre P.
PY - 1992/1/2
Y1 - 1992/1/2
N2 - Membranes were prepared from 31 breast‐cancer specimens and adjacent mammary tissues, dot‐blotted to nitrocellulose paper, and reacted with monoclonal antibodies (MAbs) (A, B, Lewis a, Lewis b, sialylated Lewis a, Lewis x, and Lewis y) and lectins (Ulex europaeus, peanut agglutinin) having various blood‐group specificities. The expression of epithelial membrane antigen was assayed with MAb MA5. The ratio of breast‐cancer to normal mammary membrane preparations (C/N ratios) of these reagents was measured by densitometric scanning. We observed a decrease in the levels of A, B, Lewis a, Lewis b, sialylated Lewis a, and Lewis y antigens and an increase of Lewis x, T, and MAS‐reactive determinants in breast cancers. The incidence of incompatible A, as well as A and B, antigens was demonstrated for 2 patients of blood group B and O respectively. When the receptor content was plotted against the C/N ratio of these various reagents, a significant inverse relationship between the C/N ratio of Lewis x antigen and estrogen (ER) and progesterone receptor (PR) content was observed in breast cancers. The mean C/N ratio of Lewis x antigen was significantly higher in the ER‐negative/PR‐negative (ER−/PR−; 2.33 ± 1.17), as compared with the ER‐positive/PR‐positive (ER+/PR+; 0.97 ± 0.80). According to these observations, Lewis x antigen expression may be influenced by hormonal stimuli such as estrogen and progesterone.
AB - Membranes were prepared from 31 breast‐cancer specimens and adjacent mammary tissues, dot‐blotted to nitrocellulose paper, and reacted with monoclonal antibodies (MAbs) (A, B, Lewis a, Lewis b, sialylated Lewis a, Lewis x, and Lewis y) and lectins (Ulex europaeus, peanut agglutinin) having various blood‐group specificities. The expression of epithelial membrane antigen was assayed with MAb MA5. The ratio of breast‐cancer to normal mammary membrane preparations (C/N ratios) of these reagents was measured by densitometric scanning. We observed a decrease in the levels of A, B, Lewis a, Lewis b, sialylated Lewis a, and Lewis y antigens and an increase of Lewis x, T, and MAS‐reactive determinants in breast cancers. The incidence of incompatible A, as well as A and B, antigens was demonstrated for 2 patients of blood group B and O respectively. When the receptor content was plotted against the C/N ratio of these various reagents, a significant inverse relationship between the C/N ratio of Lewis x antigen and estrogen (ER) and progesterone receptor (PR) content was observed in breast cancers. The mean C/N ratio of Lewis x antigen was significantly higher in the ER‐negative/PR‐negative (ER−/PR−; 2.33 ± 1.17), as compared with the ER‐positive/PR‐positive (ER+/PR+; 0.97 ± 0.80). According to these observations, Lewis x antigen expression may be influenced by hormonal stimuli such as estrogen and progesterone.
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U2 - 10.1002/ijc.2910500113
DO - 10.1002/ijc.2910500113
M3 - Article
C2 - 1728614
AN - SCOPUS:0026547034
SN - 0020-7136
VL - 50
SP - 57
EP - 63
JO - International Journal of Cancer
JF - International Journal of Cancer
IS - 1
ER -