The mucins are a family of highly glycosylated, secreted proteins with a basic structure consisting of a variable number of tandem repeats (VNTRs) encoded by 60 base pairs (Mucin 1), 69 base pairs (Mucin 2) and 51 base pairs (Mucin 3). The number of repeats is highly polymorphic and varies among different alleles. Mucin 1 proteins are expressed as type I membrane proteins in addition to secreted forms. Mucin 1 is aberrantly expressed in epithelial tumors including breast carcinomas. Mucin 2 coats the epithelia of the intestines and airways and is associated with colonic tumors. Mucin 3 is a major com-ponent of various mucus gels and is broadly expressed in normal and tumor cells.
Background References
1. Xiong J et al. Protein Kinase D2 Protects against Acute Colitis Induced by Dextran Sulfate Sodium in Mice. Sci Rep 6:34079 (2016).
2. Hensel KO et al. Differential expression of mucosal trefoil factors and mucins in pediatric inflammatory bowel diseases. Sci Rep 4:7343 (2014).
mIHC analysis of human colon tissue (Formalin/PFA-fixed paraffin-embedded sections) with Rabbit anti-MUC2 antibody (IRS175RB) at 1/100 dilution. The immunostaining was performed with the IRISKitCmTSA Kit (900808). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 30 mins at 95℃. DAPI (blue) was used as a nuclear counter stain. Image acquisition was performed with Olympus VS200 Slide Scanner.
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