| Literature DB >> 7487943 |
R Wang1, M E Klegerman, I Marsden, M Sinnott, M J Groves.
Abstract
Tice substrain BCG is used clinically as an immunotherapeutic agent against superficial bladder cancer. A boiling-water extract of this BCG showed anti-tumour activity against a murine S180 sarcoma model and was fractionated into three fractions, A, B and C, by the use of Sephadex LH-20 chromatography. An anti-tumour glucan, PS1A1, was isolated from fraction PS1A with Sephadex G-75. The molecular mass of PS1A1 was between 65 and 87 kDa by Sephadex G-100 chromatography. The structure of PS1A1 was investigated by one- and two-dimensional NMR spectroscopy and methylation analysis and was demonstrated to be primarily 1-->6-alpha-linked glucose units. We postulate that the repeating unit is: [Formula: see text]Entities:
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Year: 1995 PMID： 7487943 PMCID： PMC1136081 DOI： 10.1042/bj3110867
Source DB: PubMed Journal: Biochem J ISSN： 0264-6021 Impact factor: 3.857