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. 1986 Mar 1;234(2):355-62.
doi: 10.1042/bj2340355.

Studies on an antineoplastic fraction from human urine. Characterization of the major protein in this fraction

N H Sloane, W R Lynn, R M Macleod, E P Hade, R Pottathil, A P Kyriazis

Studies on an antineoplastic fraction from human urine. Characterization of the major protein in this fraction

N H Sloane et al. Biochem J. .

Abstract

A fraction has been isolated from human urine which exhibits antiproliferative activity against human tumour cell lines without affecting the growth of several normal diploid cell lines or tumour cells of mouse or hamster origin. The major protein present in this fraction has been characterized and tentatively designated antineoplastic urinary protein (ANUP). An S020,W value of 3.69 S was obtained by sedimentation velocity analysis, and a subunit molecular mass of 16 300 Da was obtained by sedimentation equilibrium and by sodium dodecyl sulphate/polyacrylamide-gel electrophoresis. Centrifugation data also indicated that the protein self-associates. The amino acid analysis of ANUP was consistent with its low pI (4.2) as determined by chromatofocusing analysis. Furthermore, the amino acid composition exhibited some features similar to collagen, as shown by high levels of proline and glycine, the absence of cysteine, and the presence of low levels of hydroxyproline.

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