Distribution of SET/I2PP2A protein in gastrointestinal tissues
Autoři:
Koji Umata aff001; Yusuke Sakai aff002; Shunta Ikeda aff001; Shunya Tsuji aff001; Hideyoshi Kawasaki aff001; Takashi Ohama aff001; Koichi Sato aff001
Působiště autorů:
Laboratory of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
aff001; Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
aff002
Vyšlo v časopise:
PLoS ONE 14(9)
Kategorie:
Research Article
doi:
https://doi.org/10.1371/journal.pone.0222845
Souhrn
SET (also called I2PP2A and TIF-1) is a multi-functional protein that regulates a variety of cell signaling including nucleosome assembly, histone binding, and tumorigenesis. Elevated SET protein levels are observed in various human tumors, and are correlated with poor prognosis and drug-resistance. We recently reported that SET protein levels in cancer cells were positively correlated with poor prognosis of gastric cancer patients. Using immunohistochemistry, SET protein was observed not only in cancer cells, but also in some interstitial cells. However, the tissue distribution of SET has not been investigated. Here we performed co-immunofluorescent staining to characterize SET protein distribution in gastrointestinal tissues. We found that even though the positive rate is much lower than epithelial cells, SET protein is also expressed in non-epithelial cells, such as monocytes/macrophages, neural cells, myofibroblasts, and smooth muscle cells. Our results indicate an extensive role of SET in a variety of cell types.
Klíčová slova:
Epithelial cells – Gastrointestinal tract – Immunohistochemistry techniques – Immunofluorescence staining – Smooth muscle cells – Gastrointestinal analysis – duodenum – Tissue distribution
Zdroje
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