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Comparison of expression patterns of keratin 6, 7, 16, 17, and 19 within multiple independent isolates of As+3- and Cd+2-induced bladder cancer

Keratin 6, 7, 16, 17, and 19 in bladder cancer

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Abstract

This laboratory has generated a series of seven cadmium (Cd+2)- and six arsenite (As+3)-transformed urothelial cancer cell lines by exposure of parental UROtsa cells to each agent under similar conditions of exposure. In this study, the seven Cd+2-transformed cell lines were characterized for the expression of keratin 6, 16, and 17 while the six As+3 cell lines were assessed for the expression of keratin 7 and 19. The results showed that the series of Cd+2-transformed cell lines and their respective transplants all had expression of keratin 6, 16, and 17 mRNA and protein. The expression of keratin 6, 16, and 17 was also correlated with areas of the urothelial tumor cells that had undergone squamous differentiation. The results also showed that four of the six As+3-transformed cell lines had expression of keratin 7 and 19 mRNA and protein and produced subcutaneous tumors with intense focal staining for keratin 7 and 19. The other two As+3-transformed cell lines had very low expression of keratin 7 mRNA and protein and produced subcutaneous tumors having no immunoreactivity for keratin 7; although keratin 19 expression was still present. The peritoneal tumors produced by one of these two cell lines regained expression of keratin 7 protein. The present results, coupled with previous studies, indicate that malignant transformation of UROtsa cells by Cd+2 or As+3 produce similar patterns of keratin 6, 7, 16, 17, and 19 in the resulting series of cell lines and their respective tumors.

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Abbreviations

As+3 :

Arsenic

Cd+2 :

Cadmium

DAPI:

4′,6-diamidino-2-phenylindole

DMEM:

Dulbecco’s modified Eagle’s medium

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Acknowledgment

The research described was supported by grant number R01 ES015100 from the National Institute of Environmental Health Sciences, NIH. The contents of this report are solely the responsibility of the authors and do not necessarily represent the official views of the NIH.

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Authors and Affiliations

  1. Department of Pathology, School of Medicine and Health Sciences, University of North Dakota, 501 N. Columbia Road, Grand Forks, ND, 58202, USA

    Seema Somji, Ling Cao, Aaron Mehus, Xu Dong Zhou, Mary Ann Sens, Scott H. Garrett, Yun Zheng & Donald A. Sens

  2. Department of Anatomy and Cell Biology, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, 58202, USA

    Jane R. Dunlevy & Jennifer L. Larson

Authors
  1. Seema Somji
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  2. Ling Cao
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  3. Aaron Mehus
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  4. Xu Dong Zhou
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  5. Mary Ann Sens
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  6. Jane R. Dunlevy
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  7. Scott H. Garrett
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  8. Yun Zheng
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  9. Jennifer L. Larson
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  10. Donald A. Sens
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Correspondence to Donald A. Sens.

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Somji, S., Cao, L., Mehus, A. et al. Comparison of expression patterns of keratin 6, 7, 16, 17, and 19 within multiple independent isolates of As+3- and Cd+2-induced bladder cancer. Cell Biol Toxicol 27, 381–396 (2011). https://doi.org/10.1007/s10565-010-9169-z

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  • DOI: https://doi.org/10.1007/s10565-010-9169-z

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