Abstract
The antitumour effects of lipoteichoic acids (LTA) extracted from Streptococcus pyogenes were studied in comparison with other streptococcal cellular components. LTA suppressed the tumour growth of both solid- and ascites-type MethA fibrosarcoma as did the whole cells of S. pyogenes (OK-432). No other cellular components, such as cell wall peptidoglycan, group-specific C-carbohydrate or type-specific M protein, suppressed the growth of MethA. LTA, but not the other cellular components, induced tumour necrosis factor (TNF) in Propionibacterium acnes-primed mice. LTA had no direct killing effects on MethA cells. These results indicate that LTA may be an important antitumour component of OK-432 and that one of the antitumour mechanisms by this streptococcal preparation is the induction of TNF.
Original language | English |
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Pages (from-to) | 70-73 |
Number of pages | 4 |
Journal | British Journal of Cancer |
Volume | 57 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 1988 |
ASJC Scopus subject areas
- Oncology
- Cancer Research