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Selection and Characterization of an Interferon-responsive Clonal Cell Line of HeLa Cells

Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, U.S.A.

HeLa cells generally do not respond well to interferon (IFN). We have used is-1, an IFN-sensitive mutant of mengovirus, to select a clone of IFN-responsive HeLa cells (F-H12). At moderate levels of human / IFN, is-1 yields were fivefold lower in these cells than in similarly protected control cells. In contrast, wild-type mengovirus, vesicular stomatitis virus and a wild-type and thymidine kinase-negative strains of herpes simplex virus type 1 grew equally well in both cell lines. By a cell survival assay, the F-H12 line was up to 100 times more responsive to IFN than the parental line when challenged by is-1. 2'-5'-Oligo(A)-dependent endonuclease activity was the same in both lines. These observations cannot be accounted for by enhanced induction of IFN following infection.

Keywords: interferon-responsive, HeLa cells, mengovirus

Received 14 March 1986; accepted 7 July 1986.