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Puslapis 1 nuo 1207 rezultatus
Multiple hepatic receptors cooperate to eliminate secretory mucins aberrantly entering the bloodstream: are circulating cancer mucins the "tip of the iceberg"?
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Hollow organs lined by columnar epithelial cells normally secrete mucins and their proteolytic fragments vectorially into the lumen. These heterogeneously O-glycosylated molecules are known to aberrantly enter the bloodstream in the setting of epithelial carcinomas and possibly during injury or
Epithelial mucin expression in bladder cancer: correlation with pathological and clinical parameters.
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Recently, attention has been drawn to the role of polymorphic epithelial mucin (PEM) as a possible target for cancer immunotherapy. To investigate the expression of this molecule in bladder tissue, we used two mouse monoclonal antibodies (HMFGI and HMFG2) raised against the core protein of the PEM.
Reactivity of mucin-specific lectin from Sambucus sieboldiana with simple sugars, normal mucins and tumor-associated mucins. Comparison with other lectins.
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Mucin-specific lectin from Sambucus sieboldiana (SSA-M) reacts in Western blotting and ELISA with mucins from porcine stomach, bovine and ovine submaxillary glands, the human milk fat globule membrane, in vitro human ovarian, breast and colonic tumor cell lines, and mucins produced in vivo in the
Mucolytic Agents Can Enhance HER2 Receptor Accessibility for [(89)Zr]Trastuzumab, Improving HER2 Imaging in a Mucin-Overexpressing Breast Cancer Xenograft Mouse Model.
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OBJECTIVE
Binding of trastuzumab to HER2 receptors can be impaired by steric hindrance caused by mucin MUC4. As mucolytic drugs can breakdown disulfide bonds of mucoproteins, we checked if this approach could positively affect zirconium-89-labeled trastuzumab ([(89)Zr]T) binding/uptake.
METHODS
The
Monoclonal antibody 2B5 defines a truncated O-glycan, GlcNAc beta 1-3Gal beta 1-4GlcNAc beta 1-6 (GalNAc), on mucins from deep gastric and duodenal glands as well as metaplasia and neoplasia of gastric differentiation.
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Monoclonal antibody (MAb) 2B5 previously generated in BALB/c mice using gastric mucosa of the corpus as immunogen was characterized with regard to its binding epitope. Binding assays on structurally defined neoglycolipids from mucin glycans revealed that MAb 2B5 recognizes a carbohydrate epitope on
Region-specific patterns of mucin reaction demonstrated by paradoxical concanavalin A-staining in normal colonic epithelium and in colorectal cancers induced in rats by 1,2-dimethylhydrazine.
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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
Tumour-associated and differentiation antigens on the carbohydrate moieties of mucin-type glycoproteins.
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In this report the carbohydrate antigens expressed on the three oligosaccharide domains, core, backbone and peripheral, of mucin-type glycoproteins are briefly reviewed in the light of recent observations with monoclonal antibodies. These have revealed that a number of cell-surface antigens which
Mucins in the diagnosis and therapy of pancreatic cancer.
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Mucins are large glycoproteins that form a protective layer along the lumens of the organs of the gastrointestinal and reproductive tracts. Frequently in tumors of the pancreas there are changes in the structure of mucin carbohydrates and/or levels of apomucin types. Originally mucins were of
An anti-mucin immunotoxin BrE-3-ricin A-chain is potently and selectively toxic to human small-cell lung cancer.
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Monoclonal antibodies (MAbs) known to recognize epithelial mucin or defined carbohydrate structures present on mucin molecules were screened for their ability to form cytotoxic agents with ricin A-chain active against human small-cell lung cancer (SCLC) in an indirect assay of immunotoxin
Treatment of disease-negative but mucin-like carcinoma-associated antigen-positive breast cancer patients with tamoxifen: preliminary results of a prospective controlled randomized trial.
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Increasing levels of tumor markers such as carcinoembryonic antigen, mucin-like carcinoma-associated antigen (MCA), CA 15.3, and monoclonal antibody H23 in breast cancer patients following the treatment of the primary disease and adjuvant radiation and chemotherapy reflect subclinical development of
Multiple facets of sialomucin complex/MUC4, a membrane mucin and erbb2 ligand, in tumors and tissues (Y2K update).
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Sialomucin complex (SMC, MUC4) is a high Mr glycoprotein heterodimer, composed of mucin (ASGP-1) and transmembrane (ASGP-2) subunits. ASGP-2 contains two EGF-like domains and acts as an intramembrane ligand for the receptor tyrosine kinase ErbB2. Transfection studies with SMC DNAs showed that SMC
Gefitinib inhibits MUC5AC synthesis in mucin-secreting non-small cell lung cancer cells.
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Gefitinib, an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, is an active agent in non-small cell lung cancer, and rapidly relieves bronchorrhea in patients with bronchioloalveolar carcinoma before the improvement of radiological findings. In addition, epidermal growth factor
Feeding of the water extract from Ganoderma lingzhi to rats modulates secondary bile acids, intestinal microflora, mucins, and propionate important to colon cancer.
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Consumption of reishi mushroom has been reported to prevent colon carcinogenesis in rodents, although the underlying mechanisms remain unclear. To investigate this effect, rats were fed a high-fat diet supplemented with 5% water extract from either the reishi mushroom (Ganoderma lingzhi) (WGL) or
Effect of benzyl-alpha-GalNAc, an inhibitor of mucin glycosylation, on cancer-associated antigens in human colon cancer cells.
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Many cancer-associated antigens are present on mucin glycoproteins. These include peripheral antigens such as sialyl Lea and sialyl Lex and core region carbohydrate antigens such as T, Tn, and Sialyl Tn. We have recently described an inhibitor of mucin glycosylation, benzyl-alpha-GalNAc. The purpose
Mucin 1-specific immunotherapy in a mouse model of spontaneous breast cancer.
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Human mucin 1 (MUC1) is an epithelial mucin glycoprotein that is overexpressed in 90% of all adenocarcinomas including breast, lung, pancreas, prostate, stomach, colon, and ovary. MUC1 is a target for immune intervention, because, in patients with solid adenocarcinomas, low-level cellular and
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