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Development of a Zebrafish Spleen Cell Line, ZSSJ, and Its Growth Arrest by Gamma Irradiation and Capacity to Act as Feeder Cells

J. G. Xing, W. El-Sweisi, L. E. J. Lee, P. Collodi, C. Seymour, C. Mothersill and N. C. Bols
In Vitro Cellular & Developmental Biology. Animal
Vol. 45, No. 3/4 (Mar. - Apr., 2009), pp. 163-174
Stable URL: http://www.jstor.org/stable/40205950
Page Count: 12
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Development of a Zebrafish Spleen Cell Line, ZSSJ, and Its Growth Arrest by Gamma Irradiation and Capacity to Act as Feeder Cells
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Abstract

A zebrafish spleen cell line, ZSSJ, was developed and its growth arrest by gamma radiation determined and its capacity to stimulate the proliferation of the zebrafish blastula cell line, ZEB2J, measured. ZSSJ was initiated by explant outgrowth, grew adherent with mainly an epithelial-like morphology, and stained strongly for alkaline phosphatase. ZSSJ was not only grown in L-15 with 15% fetal bovine serum at 26°C to 28°°C but also grew at room temperature. Cultures of ZSSJ have undergone approximately 40 population doublings, had few cells staining for b-galactosidase activity, which is commonly present in senescent cultures, and many cells with an aneuploid karyotype, which is frequently associated with immortalization. ZSSJ growth was arrested by 30 to 50 Gy of g-irradiation, whereas after 20 Gy, some slight growth was observed. By contrast, growth of the rainbow trout spleen stromal cell line, RTS34st, which has been used as a feeder for zebrafish ES cell cultures, was arrested completely by 20 Gy. In cocultures, nongrowth-arrested ZSSJ stimulated ZEB2J proliferation better than growth-arrested ZSSJ and better than RTS34st. ZSSJ should be useful as a feeder cell line for zebrafish ES cell cultures.

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