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JBC, Vol. 252, Issue 19, 6585-6587, Oct, 1977

Human lymphoblastoid interferon. Large scale production and partial purification

P. J. Bridgen, C. B. Anfinsen, L. Corley, S. Bose, K. C. Zoon, U. T. Ruegg and C. E. Buckler

Human lymphoblastoid interferon was produced on an 800-liter scale (2.6 X 10(9) units) by induction of Namalva cells with Newcastle disease virus, strain B1. The interferon was partially purified by anti-leukocyte interferon affinity chromatography, sulfopropyl Sephadex ion exchange chromatography, isoelectric focusing, and sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Recovery of interferon after gel electrophoresis varied from 11 to 33% based on the original crude material, with about 35,000-fold purification. The gel electrophoresis resolved the antiviral activity into two components with apparent molecular weights of 18,000 and 22,000; treatment with glycosidases resulted in all the activity being associated with the lower molecular weight species. Interferon activity could be completely (85 to 113%) recovered from the gels by elution into a buffer containing sodium dodecyl sulfate. The presence of sodium dodecyl sulfate did not appear to affect the assay of interferon. The protein could also be completely (75 to 106%) eluted from gels stained with coomassie blue, again with no loss in activity.
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