| Literature DB >> 1366960 |
R Lleonart1, D Näf, H Browning, C Weissmann.
Abstract
We describe a specific and quantitative novel assay for biologically active human type I interferon (IFN), the MxR assay. It is based on a Vero cell line containing multiple copies of a hybrid gene consisting of the murine Mx promoter, which is responsive to type I IFN, linked to the human growth hormone (hGH) transcription unit. Exposure of this cell line to IFN-alpha or -beta for 12-48 hours results in the production of hGH that is measured by a commercially available radio-immune assay. The response to IFN-alpha is dose-dependent between 3 and 1000 units/ml. There is no response to TNF, IL-1 and a number of other cytokines and growth factors, and only a negligible response to IFN-gamma.Entities:
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Year: 1990 PMID: 1366960 DOI: 10.1038/nbt1290-1263
Source DB: PubMed Journal: Biotechnology (N Y) ISSN: 0733-222X