Production of Interferon‐β by Murine T‐Cell Lines Induced by 10‐Carboxymethyl‐9‐Acridanone

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Abstract
Besides the established T-cell property of producing gamma interferon (IFN-.gamma.), murine T cells additionally possess the ability to produce IFN-.alpha. and IFN-.beta. when appropriate inducers such as 10-carboxymethyl-9-acridanone (CMA) or Newcastle disease virus (NDV) are used. Interleukin 2 (IL-2)-dependent murine T-cell lines, but not purified resting splenic T cells, responded to CMA and NDV with production of IFN-.alpha.,.beta.. The IFN production by these T cells was not restricted to a special subset, since T cells expressing the Lyt 1+2- and the Lyt 1-2+ phenotype responded to these inducers with IFN production. After prolonged passaging of the T-cell lines in IL-2-containing medium, the ability to respond to CMA with production of antiviral activity was sustained longer than the ability for concanavalin A-induced IFN-.gamma. production. Whereas the NDV-induced T-cell supernates contained both IFN-.alpha. and IFN-.beta., the induction with CMA resulted exclusively in the synthesis of IFN-.beta. by the T-cell lines.