TY - JOUR
T1 - Generation and Characterization of Anti-MUC4 Monoclonal Antibodies Reactive with Normal and Cancer Cells in Humans
AU - Moniaux, Nicolas
AU - Varshney, Grish Chandra
AU - Chauhan, Subhash Chand
AU - Copin, Marie Christine
AU - Jain, Maneesh
AU - Wittel, Uwe A.
AU - Andrianifahanana, Mahefatiana
AU - Aubert, Jean Pierre
AU - Batra, Surinder Kumar
PY - 2004/2
Y1 - 2004/2
N2 - We have previously cloned the full-length cDNA (approximately 28 Kb) and established the complete genomic organization (25 exons/introns over 100 kb) of the human MUC4 mucin. This large molecule is predicted to protrude over 2 μm above the cell surface, in which MUC4α is an extracellular mucin-type glycoprotein subunit and MUC4β is the transmembrane subunit. Over two thirds of the encoded protein sequence consists of 16-amino-acid tandem repeats (TR), which are flanked by unique sequences. In this study we generated and characterized monoclonal antibodies (MAbs) directed against the TR region of MUC4. Mice were immunized with a KLH-conjugated MUC4 TR peptide, STGDT-TPLPVTDTSSV. Several clones were purified by three rounds of limited dilutions and stable clones presenting a sustained antibody production were selected for subsequent characterization. Antibodies were tested for their reactivity and specificity to recognize the MUC4 peptide and further screened by enzyme-linked immunosorbent assay (ELISA) and Western blotting analyses. One of the MAbs (8G7) was strongly reactive against the MUC4 peptide and with native MUC4 from human tissues or pancreatic cancer cells in Western blotting, immunohistochemistry, and confocal analysis. Anti-MUC4 MAb may represent a powerful tool for the study of MUC4 function under normal and pathological conditions and for diagnosis of solid tumors including those in the breast, pancreas, lungs, and ovaries.
AB - We have previously cloned the full-length cDNA (approximately 28 Kb) and established the complete genomic organization (25 exons/introns over 100 kb) of the human MUC4 mucin. This large molecule is predicted to protrude over 2 μm above the cell surface, in which MUC4α is an extracellular mucin-type glycoprotein subunit and MUC4β is the transmembrane subunit. Over two thirds of the encoded protein sequence consists of 16-amino-acid tandem repeats (TR), which are flanked by unique sequences. In this study we generated and characterized monoclonal antibodies (MAbs) directed against the TR region of MUC4. Mice were immunized with a KLH-conjugated MUC4 TR peptide, STGDT-TPLPVTDTSSV. Several clones were purified by three rounds of limited dilutions and stable clones presenting a sustained antibody production were selected for subsequent characterization. Antibodies were tested for their reactivity and specificity to recognize the MUC4 peptide and further screened by enzyme-linked immunosorbent assay (ELISA) and Western blotting analyses. One of the MAbs (8G7) was strongly reactive against the MUC4 peptide and with native MUC4 from human tissues or pancreatic cancer cells in Western blotting, immunohistochemistry, and confocal analysis. Anti-MUC4 MAb may represent a powerful tool for the study of MUC4 function under normal and pathological conditions and for diagnosis of solid tumors including those in the breast, pancreas, lungs, and ovaries.
KW - Antibody
KW - MUC4
KW - Mucin
KW - Pancreatic adenocarcinoma
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U2 - 10.1177/002215540405200213
DO - 10.1177/002215540405200213
M3 - Article
C2 - 14729877
AN - SCOPUS:0742305197
SN - 0022-1554
VL - 52
SP - 253
EP - 261
JO - Journal of Histochemistry and Cytochemistry
JF - Journal of Histochemistry and Cytochemistry
IS - 2
ER -