Expression of inflammatory-related factors in porcine anterior pituitary-derived cell line
2008
Nagai, Yasuhiro | Ogasawara, Hideki | Taketa, Yoshikazu | Aso, Hisashi | Kanaya, Takashi | Miyake, Masato | Watanabe, Kouichi | Ohwada, Shyuichi | Muneta, Yoshihiro | Yamaguchi, Takahiro
Recent studies have shown that undifferentiated stem cells act as immunomodulators. To investigate the immunomodulatory function of the progenitor cells of the anterior pituitary gland, we attempted to establish a stem/progenitor cell line from the porcine anterior pituitary gland, and to detail its inflammatory cytokine expression. A cloned cell line from the porcine anterior pituitary gland was established and was designated as the porcine anterior pituitary-derived cell line (PAPC). PAPC expressed the mRNA of Nanog and Oct-4, and showed positive immunoreactivity for β-catenin and Hes1 in its nucleus. PAPC grew stably by repeated passage and rapidly in the EGF and bFGF containing medium. RT-PCR showed that PAPC expressed mRNA of IL-1α, IL-6, IL-12, IL-15, IL-18 and TLR4. PAPC expressed S100α and IL-18 protein, which was localized in the marginal epithelial cells of Rathke's pouch. These results suggest that PAPC is a stem/progenitor cell and may regulate anterior pituitary cell function through an immuno-endocrine pathway.
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