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- W2149968389 abstract "Mucin glycoproteins (mucins) are the major macromolecular constituents of mucus gels in mammalian respiratory, gastrointestinal, and reproductive tracts. Disorders of mucin glycosylation, which may result from either abnormal post-translational processing or differences in mucin protein gene expression, have been indicated in several diseases. Quantitation of mucin gene expression has been hindered by two features of human mucin genes: variable numbers of tandemly repeating nucleotides per mRNA molecule and polydisperse mRNA transcripts. We report here a method to quantitate mucin mRNA levels in epithelial cells and have evaluated three mucin genes, MUC1, MUC2, and MUC5, which are expressed in respiratory epithelium. The method uses the 3' non-tandem repeat mucin cDNA sequences, as they were shown to have a single-size transcript when amplified by the polymerase chain reaction, consistent with a one-to-one relationship with the mRNA molecule. The 3' non-tandem repeat cDNA sequences were cloned and transcribed in vitro to prepare complementary RNA (cRNA) standards. By comparison to a cRNA standard curve, mucin gene expression was evaluated in colon adenocarcinoma, pancreatic adenocarcinoma, and transformed respiratory epithelial cells and in nasal polyp tissue by slot blot analysis. CFPAC-1, a pancreatic adenocarcinoma cell line, expressed the highest MUC1 transcript levels. Colon adenocarcinoma cell lines varied in MUC2 expression levels, and one colon adenocarcinoma cell line, HT-29, had higher levels of MUC5 than MUC2. Nasal polyp tissue expressed more MUC5 mRNA than MUC1 or MUC2 mRNA. This mucin mRNA slot blot method provides a quantitative method for investigating the regulation of mucin gene expression in health and disease." @default.
- W2149968389 created "2016-06-24" @default.
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- W2149968389 date "1994-12-01" @default.
- W2149968389 modified "2023-09-23" @default.
- W2149968389 title "Quantitation of mucin mRNA in respiratory and intestinal epithelial cells." @default.
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- W2149968389 doi "https://doi.org/10.1165/ajrcmb.11.6.7946402" @default.
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