| Autor: |
Kawano, Kikuo, Iwamura, Takeshi, Yamanari, Hideo, Seo, Yasuhisa, Suganuma, Tatsuo, Chijiiwa, Kazuo |
| Předmět: |
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| Zdroj: |
Oncology; 2004, Vol. 66 Issue 6, p458-467, 10p |
| Abstrakt: |
A new tumor cell line (SUIT-4) derived from ascites of a patient with carcinoma of the pancreas has been established in tissue culture and in nude mice, and maintained for over 7 years. In tissue culture, the cells grew as a confluent monolayer with piling up of cells in some areas. The population doubling time during the exponential phase of the cell growth was 43.9 h in vitro. Chromosome count ranged from 63 to 68 with a modal number of 67. Subcutaneous injection of cultured cells into the flanks of nude mice resulted in tumor formation with a doubling time of 88.8 h. Histopathologically, xenografts in nude mice were moderately differentiated tubular adenocarcinoma, and the tumor cells showed spontaneous metastasis to the regional lymph nodes in 6 of 21 nude mice and to the lung in 4 of 21. Transmission electron microphotographs confirmed the ductal cell origin of the carcinoma and revealed that the cells had abundant mitochondria and lysosomes. SUIT-4 cells released carcinoembryonic antigen (3.08 × 10² ng/1 × 106 cells/ 24 h) and carbohydrate antigen 19-9 (4.75 × 104 U/1 × 106 cells/24 h) during exponential cell growth in vitro. Reverse transcriptase-polymerase chain reaction studies revealed that SUIT-4 cells expressed matrix metalloproteinases 1, 3, 7, 10 and 14. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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