Summary
This article describes HKT-1097, a new cell line established from renal tumors induced by the protracted administration of diethylstilbestrol (DES) to male Syrian golden hamsters. Cell culture was initiated from tumor samples obtained from two 14-mo.-old animals which had undergone exposure to DES for a period of 11 mo. The HKT-1097 cell line was characterized between Passages 16 and 22 with respect to cell morphology, growth properties, karyology, and the presence of estrogen receptors. Moreover, immunostaining with a panel of antisera was performed to identify the cytological profile of the cell line and establish a parallel with tumor tissue in vivo. HKT-1097 cells are fibroblastoid; their most distinctive feature is that they exhibit strikingly long processes. The HKT-1097 cell line grows as a monolayer with a tendency toward a less stringent density-dependent inhibition of growth. The modal chromosome number is 44, but more than 50% of the cells are aneuploid, suggesting a substantial degree of karyotype instability. HKT-1097 cells express estrogen receptors. They contain immunoreactive vimentin and desmin, but appear negative upon cytokeratin immunostaining. In addition, these cells express glial fibrillary acidic protein and other markers of the neuroectodermal lineage, but lack neurofilament protein. Insofar as the same lineage markers have been demonstrated in DES-induced Syrian hamster kidney tumors (SHKT), we conclude that HKT-1097 cells retain some of the original tumor cell phenotype. The current observations suggest that estrogen-induced SHKT derive from the renal interstitium and point to an involvement of neuroectodermal cells in the development of these neoplasms.
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The cell line described in this article has been deposited with the European Collection of Cell Cultures with the accession number 98061003.
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Laurent, G., Nonclercq, D., Journé, F. et al. Characterization of a cell line established from diethylstilbestrol-induced renal tumors in syrian hamsters. In Vitro Cell.Dev.Biol.-Animal 35, 339–345 (1999). https://doi.org/10.1007/s11626-999-0084-7
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DOI: https://doi.org/10.1007/s11626-999-0084-7