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The immunogenicity of concanavalin A (Con A)-treated tumor cells was examined in 4 histologically distinct tumors originated from 3 different strains of mice. In all of these tumors, Con A-treated tumor cells induced stronger tumor-specific immunity than Con A-free tumor cells as determined from the
Concanavalin A (ConA)-bound-tumor cell vaccine of methylchoranthrene-induced fibrosarcoma (Meth 1) induced tumor-specific immunoprophylactic and immunotherapeutic response against an inoculum of live Meth 1 cells in histocompatible animals. ConA-free Meth 1 vaccine induced much less response under
The combined administration of mitomycin C (MMC) on Day 5 and concanavalin A (Con A)-bound L1210 murine leukemia vaccine on Days 1 and 8 induced an enhanced therapeutic response in animals bearing L1210 leukemia greater than that inducible by either of them. The enhancement was dependent on the
Certain fibrosarcoma lines in culture and the WEHI-3 myelomonocytic leukemia cell line have previously been shown to secrete myeloid colony-stimulating activity (CSA) spontaneously. We describe here other hematopoietic tumor cell lines in which CSA is either produced constitutively or inducible by
Effect of various metabolic inhibitors on the agglutination of rat ascites tumor cells mediated by concanavalin A and Ricinus communis agglutinin was studied using a quantitative assay method for agglutination in which turbidity of cell suspension is measured. Cell agglutination was inhibited by low
Effect of treatment of female rats with an oral contraceptive agent (OCA), Ovulen-50, for 7 weeks on agglutination of hepatocytes with concanavalin A (con A) and activities of certain tumor marker enzymes were examined to find out if OCA treatment is related to preneoplastic or neoplastic processes.
The lectin binding capacity of the cell surface of normal flattened exfoliated epithelial cells of the uterine cervix was investigated looking for differences between specimens from normal and cancer patients. The method used was a modified concanavalin A-horseradish peroxidase (Con A-HRP) labeling
The binding of concanavalin A (Con A) at the free apical membranes of surface tumor cells in human breast cancer explants grown in organ culture was studied cytochemically with horseradish peroxidase (HRP) as a marker. On the cell membranes in aldehyde-fixed explants or explants exposed to Con A at
The histochemistry of mucin in normal large intestine and in experimental colorectal cancers induced in Wistar rats with 1,2-dimethylhydrazine was analyzed by modifications of the concanavalin A-horseradish peroxidase method (paradoxical concanavalin A-staining) and high-iron diamine-Alcian blue (pH
All human immunoglobulins are glycosylated. The changes in IgG glycosylation are associated with autoimmune disorders and pregnancy. Little is known about IgG glycosylation in patients with cancer. A lectin enzyme-linked immunosorbent assay (LELISA) based method was developed for measuring the
In order to differentiate whether slight alpha-fetoprotein (AFP) increases observed in any patient are due to germ cell tumours (GCT) or to liver diseases (including hepatotoxicity of chemotherapy), we measured the binding ratio of the AFP to concanavalin A (ConA). A total of 218 serum samples were
OBJECTIVE
Compared with normal colonic mucosa, lectin receptor expression is increased in hyperplastic and neoplastic tissues; some lectins have been shown to influence human colonic epithelial cell proliferation. The aim was to assess further the influence of five lectins (Phaseolus vulgaris (PNA),
In this study, a liquid-phase separation platform consisting of tandem lectin affinity chromatography was introduced for the selective capturing of sub-glycoproteomics that are affected in cancers, e.g. breast cancer. The platform is comprised of three monolithic columns with surface immobilised
The jack bean lectin, concanavalin A (Con A), was modified with 2,4-bis[O-methoxypoly(ethylene glycol)]-6-chloro-s-triazine, activated PEG2, to form PEG-Con A. The immunoreactivity of PEG-Con A towards anti-Con A antibodies was reduced by increasing the degree of modification of amino groups in the
Concanavalin A (Con A), a lectin from Jack bean seeds that, once bound to the mannose moiety on the cell membrane glycoprotein, is internalized preferentially to the mitochondria. A BNIP3-mediated mitochondria autophagy is then induced, and causes the tumor cells to undergo autophagic cell death.