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Infection of Xenotransplanted Human Cell Lines by Murine Retroviruses

Discussion in 'XMRV Testing, Treatment and Transmission' started by Ecoclimber, Jun 21, 2013.

  1. Ecoclimber

    Ecoclimber Contamination, What contamination?

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    Front Oncol. 2013 Jun 17;3:156. doi: 10.3389/fonc.2013.00156. Print 2013.Infection of Xenotransplanted Human Cell Lines by Murine Retroviruses: A Lesson Brought Back to Light by XMRV.
    Hempel HA, Burns KH, De Marzo AM, Sfanos KS.
    Source

    Department of Pathology, Johns Hopkins University School of Medicine , Baltimore, MD , USA.
    Abstract

    Infection of xenotransplanted human cells by xenotropic retroviruses is a known phenomenon in the scientific literature, with examples cited since the early 1970s. However, arguably, until recently, the importance of this phenomenon had not been largely recognized. The emergence and subsequent debunking of Xenotropic Murine leukemia virus-Related Virus (XMRV) as a cell culture contaminant as opposed to a potential pathogen in several human diseases, notably prostate cancer and Chronic Fatigue Syndrome, highlighted a potential problem of murine endogenous gammaretroviruses infecting commonly used human cell lines. Subsequent to the discovery of XMRV, many additional cell lines that underwent xenotransplantation in mice have been shown to harbor murine gammaretroviruses. Such retroviral infection poses the threat of not only confounding experiments performed in these cell lines via virus-induced changes in cellular behavior but also the potential infection of other cell lines cultured in the same laboratory. Thus, the possibility of xenotropic retroviral infection of cell lines may warrant additional precautions, such as periodic testing for retroviral sequences in cell lines cultured in the laboratory.
    KEYWORDS:

    XMRV, cancer, cell line, gammaretrovirus, xenotransplantation
     

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