Abstract | BACKGROUND: Dietary fibres have been associated with decreased risk of various cancers, although the mechanisms are unclear. Induction of apoptosis in tumour cells is thought to be an important protective mechanism against colorectal cancer. This work investigates the effects of pectins and pectic- oligosaccharides (POS) on the human colonic adenocarcinoma cell line HT29. MATERIALS AND METHODS: RESULTS: A significant reduction in attached cell numbers was observed after three days incubation. This decrease was neither due to cells undergoing necrosis nor differentiation. Increased apoptosis frequency, after incubation with 1% (w/v) pectin and/or POS, was demonstrated by caspase-3 activity and DNA laddering on agarose gel electrophoresis. CONCLUSION: Dietary pectins and their degradation products may contribute to the reported protective effects of fruits against colon cancer.
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Authors | Estibaliz Olano-Martin, Gerald H Rimbach, Glenn R Gibson, Robert A Rastall |
Journal | Anticancer research
(Anticancer Res)
2003 Jan-Feb
Vol. 23
Issue 1A
Pg. 341-6
ISSN: 0250-7005 [Print] Greece |
PMID | 12680234
(Publication Type: Journal Article)
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Chemical References |
- Oligosaccharides
- Pectins
- CASP3 protein, human
- Caspase 3
- Caspases
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Topics |
- Adenocarcinoma
(drug therapy, enzymology, pathology)
- Apoptosis
(drug effects)
- Caspase 3
- Caspases
(metabolism)
- Cell Division
(drug effects)
- Colonic Neoplasms
(drug therapy, enzymology, pathology)
- HT29 Cells
- Humans
- Oligosaccharides
(pharmacology)
- Pectins
(pharmacology)
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