title: A xenograft line of human teratocarcinoma established by serial transplantation in severe combined immunodeficient (SCID) mice.
abstract: We established a xenograft line of human teratocarcinoma (TC-1) and characterized the pluripotency of differentiation of the neoplastic cells. A teratocarcinoma specimen obtained from a primary mediastinal lesion (22-year-old male patient) was inoculated subcutaneously into severe combined immunodeficient (SCID) mice. The carcinoma formed tumors in the mice. We established a xenograft line by serial passage of the tumor in vivo. The primary tumor was composed of papillary and pseudoglandular nests of highly atypical epithelial cells with foci of glomeruloid structures. The metastatic cells showed apparent production of mucin and differentiation to striated muscle. The xenograft line TC-1 retained the basic histopathological features seen in the primary and metastatic cells. The xenograft line showed focal differentiation to cartilage through serial passages. Immunohistochemical studies with anti-alpha-fetoprotein (AFP) demonstrated positive immunoreactivity on the TC-1 cells. Serum AFP levels were also elevated in the TC-1-bearing SCID mice. The human teratocarcinoma xenograft line TC-1 will be useful for studying the differentiation mechanism in human totipotent stem cells.
authors.affiliation: Department of Pathology, Tokai University School of Medicine, Kanagawa, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Abe
authors.forename: Y
authors.initials: Y
authors.lastname: Oshika
authors.forename: Y
authors.initials: Y
authors.lastname: Ohnishi
authors.forename: R
authors.initials: R
authors.lastname: Suto
authors.forename: T
authors.initials: T
authors.lastname: Tokunaga
authors.forename: H
authors.initials: H
authors.lastname: Yamazaki
authors.forename: H
authors.initials: H
authors.lastname: Kijima
authors.forename: N
authors.initials: N
authors.lastname: Hiraoka
authors.forename: Y
authors.initials: Y
authors.lastname: Ueyama
authors.forename: N
authors.initials: N
authors.lastname: Tamaoki
authors.forename: M
authors.initials: M
authors.lastname: Nakamura
mesh_terms: D000328:Adult; D000818:Animals; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001932:Brain Neoplasms / Q000532:radiotherapy / Q000556:secondary / Q000601:surgery; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000473:pathology*; D051379:Mice; D016513:Mice, SCID; D011859:Radiography; D018243:Teratocarcinoma / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000473:pathology*; D014183:Transplantation, Heterologous; D014407:Tumor Cells, Cultured; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000509:alpha-Fetoproteins