Hamasima N, Ueda R, Takahashi T. Characterization of three mouse monoclonal antibodies that react with high-molecular-mass glycopeptides isolated from F9 mouse teratocarcinoma cells.
Differentiation 1986;
31:174-82. [PMID:
2429884 DOI:
10.1111/j.1432-0436.1986.tb00398.x]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Three IgM mouse monoclonal antibodies, NL-9, Thy-22, and HL-5, which were produced primarily against human hematopoietic cells, were tested for their reactivity with various mouse cell lines and were found to react predominantly with mouse embryonal carcinoma cells. Thy-22 reacted with 2-cell-stage mouse embryos, whereas the other two antibodies were not reactive at this stage. All three antibodies, however, reacted with 8-cell-stage embryos. At the blastocyst stage, Thy-22 reacted with the entire surface of the trophectoderm cells, whereas the reactivity of NL-9 and HL-5 was weaker and was polarized on the mural trophectoderm. Immunohistological examination of 6th-day mouse embryos using anti-complement immunofluorescence demonstrated that the embryonic ectoderm was positive for all three antibodies: the reaction of NL-9 and Thy-22 was uniformly distributed over these cells, whereas HL-5 predominantly stained the luminal aspects of the cells lining the proamniotic cavity. Visceral-endoderm cells and trophoblastic cells were positive with all three monoclonal antibodies, whereas the parietal endoderm, extraembryonic ectoderm, and ectoplacental cone were negative. In 19th-day fetuses and adult tissues, certain epithelial cells were stained by these three antibodies. The biochemical nature of the antigens detected was also investigated. Farr's assay showed that both NL-9 and Thy-22 precipitated approximately 10% of the high-molecular-mass glycopeptides isolated from F9 cells, while HL-5 reacted with about 5% of these glycopeptides. The reactivity of the three antibodies against the glycopeptides was completely inhibited by the presence of X-hapten-conjugated silica.(ABSTRACT TRUNCATED AT 250 WORDS)
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