BACKGROUND: The line of differentiation in synovial sarcoma still remains controversial. Thus far, only a few human synovial sarcoma cell lines have been described. However, their morphologic characteristics have not been fully established. EXPERIMENTAL DESIGN: We established a new synovial sarcoma cell line (HS-SY-II) from pleural effusion with lung metastasis in a typical example of the monophasic spindle cell type. The HS-SY-II cells, in vitro and in vivo, were examined by light microscopy, immunohistochemistry, electron microscopy, and cytogenetics. RESULTS: The HS-SY-II cells showed a hypertriploid karyotype with complex chromosome abnormalities including pathognomonic t(X;18)(p11;q11), and have been stably maintained for more than 40 months in vitro, showing rather small spindle or polygonal shape without conspicuous pleomorphism. Histologic features of initially and serially transplanted tumors in nude mice were essentially the same as those of the original sarcoma, corresponding to the monophasic spindle cell variant with a prominent palisading pattern and calcified foci in parts. The HS-SY-II cells in vitro and in vivo similarly expressed vimentin and cytokeratin by immunohistochemistry, and also exhibit the same ultrastructural features such as irregularly shaped nuclei with prominent nucleoli, many paranuclearly running intermediate filaments, and filopodia-like processes. CONCLUSIONS: This HS-SY-II cell line retaining the distinct morphological characteristics as the monophasic spindle cell type of synovial sarcoma therefore will be extremely useful for various pathomorphologic investigations on synovial sarcoma.
BACKGROUND: The line of differentiation in synovial sarcoma still remains controversial. Thus far, only a few humansynovial sarcoma cell lines have been described. However, their morphologic characteristics have not been fully established. EXPERIMENTAL DESIGN: We established a new synovial sarcoma cell line (HS-SY-II) from pleural effusion with lung metastasis in a typical example of the monophasic spindle cell type. The HS-SY-II cells, in vitro and in vivo, were examined by light microscopy, immunohistochemistry, electron microscopy, and cytogenetics. RESULTS: The HS-SY-II cells showed a hypertriploid karyotype with complex chromosome abnormalities including pathognomonic t(X;18)(p11;q11), and have been stably maintained for more than 40 months in vitro, showing rather small spindle or polygonal shape without conspicuous pleomorphism. Histologic features of initially and serially transplanted tumors in nude mice were essentially the same as those of the original sarcoma, corresponding to the monophasic spindle cell variant with a prominent palisading pattern and calcified foci in parts. The HS-SY-II cells in vitro and in vivo similarly expressed vimentin and cytokeratin by immunohistochemistry, and also exhibit the same ultrastructural features such as irregularly shaped nuclei with prominent nucleoli, many paranuclearly running intermediate filaments, and filopodia-like processes. CONCLUSIONS: This HS-SY-II cell line retaining the distinct morphological characteristics as the monophasic spindle cell type of synovial sarcoma therefore will be extremely useful for various pathomorphologic investigations on synovial sarcoma.
Authors: M Nagai; S Tanaka; M Tsuda; S Endo; H Kato; H Sonobe; A Minami; H Hiraga; H Nishihara; H Sawa; K Nagashima Journal: Proc Natl Acad Sci U S A Date: 2001-03-27 Impact factor: 11.205
Authors: Alan L Ho; Shyamprasad Deraje Vasudeva; Marick Laé; Tsuyoshi Saito; Violetta Barbashina; Cristina R Antonescu; Marc Ladanyi; Gary K Schwartz Journal: Cancer Res Date: 2012-07-10 Impact factor: 12.701
Authors: J Shipley; J Crew; S Birdsall; S Gill; J Clark; C Fisher; A Kelsey; T Nojima; H Sonobe; C Cooper; B Gusterson Journal: Am J Pathol Date: 1996-02 Impact factor: 4.307
Authors: Ana Banito; Xiang Li; Aimée N Laporte; Jae-Seok Roe; Francisco Sanchez-Vega; Chun-Hao Huang; Amanda R Dancsok; Katerina Hatzi; Chi-Chao Chen; Darjus F Tschaharganeh; Rohit Chandwani; Nilgun Tasdemir; Kevin B Jones; Mario R Capecchi; Christopher R Vakoc; Nikolaus Schultz; Marc Ladanyi; Torsten O Nielsen; Scott W Lowe Journal: Cancer Cell Date: 2018-03-01 Impact factor: 31.743