MUC1 in human and murine mammary carcinoma cells decreases the expression of core 2 1,6-N-acetylglucosaminyltransferase and -galactoside 2,3-sialyltransferase

Autor: Véronique Piller, Tomasz Owczarek, Piotr Dziegiel, Maciej Ugorski, Alicja Solatycka, Friedrich Piller, Marzena Podhorska-Okolow, Lukasz Wojciech, Bartosz Pula
Přispěvatelé: Centre de biophysique moléculaire (CBM), Université d'Orléans (UO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Department of Histology and Embryology, Wroclaw Medical University
Rok vydání: 2012
Předmět:
Glycosylation
Galectin 3
Biochemistry
Immunoenzyme Techniques
Small hairpin RNA
Mice
0302 clinical medicine
RNA interference
Tumor Cells
Cultured
RNA
Small Interfering
skin and connective tissue diseases
MUC1
0303 health sciences
biology
Reverse Transcriptase Polymerase Chain Reaction
Chemistry
Carcinoma
Ductal
Breast
Flow Cytometry
Galactosyltransferases
3. Good health
030220 oncology & carcinogenesis
Female
E-Selectin
beta-Galactoside alpha-2
3-Sialyltransferase
Sialyltransferase
Blotting
Western
Breast Neoplasms
N-Acetylglucosaminyltransferases
Real-Time Polymerase Chain Reaction
digestive system
03 medical and health sciences
Antigen
Complementary DNA
Cell Adhesion
Animals
Humans
Antigens
Tumor-Associated
Carbohydrate
[SDV.BBM]Life Sciences [q-bio]/Biochemistry
Molecular Biology
RNA
Messenger
neoplasms
030304 developmental biology
Messenger RNA
Mucin-1
Molecular biology
N-Acetylneuraminic Acid
Sialyltransferases
biological factors
digestive system diseases
biology.protein
Neuraminidase
Zdroj: Glycobiology
Glycobiology, Oxford University Press (OUP), 2012, 22 (8), pp.1042-54. ⟨10.1093/glycob/cws075⟩
ISSN: 1460-2423
0959-6658
Popis: International audience; A good correlation between the expression of mucin1 (MUC1) and T antigen was found in breast cancer tumors and breast cancer cell lines, especially after treatment with neuraminidase. The association between the appearance of T antigen and the overexpression of MUC1 was further confirmed by transfecting MDA-MB-231 cells and murine 4T1 mammary carcinoma cells with cDNA for MUC1 and using an RNAi approach to inhibit the expression of MUC1 gene in T47D cells. Furthermore, we discovered that in 4T1 cells which express the sialyl Le(X) antigen, overexpression of MUC1 caused not only appearance of T antigen, but also loss of the sialyl Le(X) structure. As the observed changes in O-glycan synthesis can be associated with changes in the expression of specific glycosyltransferases, core 1 β1,3-galactosyltransferase, core 2 β1,6-N-acetylglucosaminyltransferase (C2GnT1) and β-galactoside α2,3-sialyltransferase (ST3Gal I), we studied their expression in parental, vector-transfected and MUC1-transfected MDA-MB-231 and 4T1 cells as well as T47D cells transduced with small hairpin RNA targeted MUC1 mRNA. It was found that the expression of C2GnT1 and ST3Gal I is highly decreased in MUC1-expressing MDA-MB-231 and 4T1 cells and increased in T47D cells with suppressed expression of MUC1. Therefore, we found that changes in the structure of O-linked oligosaccharides, resulting in the occurrence of T antigen, are at least partially associated with MUC1 overexpression which down-regulates the expression of C2GnT1 and ST3Gal I. We showed also that the overexpression of MUC1 in 4T1 cells changes their adhesive properties, as MUC1-expressing cells do not adhere to E-selectin, but bind galectin-3.
Databáze: OpenAIRE
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