title: Characterization of murine pituitary-derived cell lines Tpit/F1, Tpit/E and TtT/GF.
abstract: The pituitary is an important endocrine tissue of the vertebrate that produces and secretes many hormones. Accumulating data suggest that several types of cells compose the pituitary, and there is growing interest in elucidating the origin of these cell types and their roles in pituitary organogenesis. Therein, the histogenous cell line is an extremely valuable experimental tool for investigating the function of derived tissue. In this study, we compared gene expression profiles by microarray analysis and real-time PCR for murine pituitary tumor-derived non-hormone-producing cell lines TtT/GF, Tpit/F1 and Tpit/E. Several genes are characteristically expressed in each cell line: Abcg2, Nestin, Prrx1, Prrx2, CD34, Eng, Cspg4 (Ng2), S100β and nNos in TtT/GF; Cxcl12, Raldh1, Msx1 and Twist1 in Tpit/F1; and Cxadr, Sox9, Cdh1, EpCAM and Krt8 in Tpit/E. Ultimately, we came to the following conclusions: TtT/GF cells show the most differentiated state, and may have some properties of the pituitary vascular endothelial cell and/or pericyte. Tpit/F1 cells show the epithelial and mesenchymal phenotypes with stemness still in a transiting state. Tpit/E cells have a phenotype of epithelial cells and are the most immature cells in the progression of differentiation or in the initial endothelial-mesenchymal transition (EMT). Thus, these three cell lines must be useful model cell lines for investigating pituitary stem/progenitor cells as well as organogenesis.
authors.affiliation: Laboratory of Molecular Biology and Gene Regulation, Division of Life Science, Graduate School of Agriculture, Meiji University, Kawasaki 214-8571, Japan.
authors.forename: Saishu
authors.initials: S
authors.lastname: Yoshida
authors.forename: Masashi
authors.initials: M
authors.lastname: Higuchi
authors.forename: Hiroki
authors.initials: H
authors.lastname: Ueharu
authors.forename: Naoto
authors.initials: N
authors.lastname: Nishimura
authors.forename: Mitsuyoshi
authors.initials: M
authors.lastname: Tsuda
authors.forename: Hideji
authors.initials: H
authors.lastname: Yako
authors.forename: Mo
authors.initials: M
authors.lastname: Chen
authors.forename: Hideo
authors.initials: H
authors.lastname: Mitsuishi
authors.forename: Yoshiya
authors.initials: Y
authors.lastname: Sano
authors.forename: Takako
authors.initials: T
authors.lastname: Kato
authors.forename: Yukio
authors.initials: Y
authors.lastname: Kato
mesh_terms: D000818:Animals; D015415:Biomarkers / Q000378:metabolism; D002454:Cell Differentiation; D002460:Cell Line / Q000166:cytology* / Q000378:metabolism; D058750:Epithelial-Mesenchymal Transition; D020869:Gene Expression Profiling; D051379:Mice; D010902:Pituitary Gland / Q000166:cytology* / Q000378:metabolism; D014157:Transcription Factors / Q000378:metabolism
chemical_list: D015415:Biomarkers; D014157:Transcription Factors