RGD Reference Report - Vitamin B6 suppresses serine protease inhibitor 3 expression in the colon of rats and in TNF-alpha-stimulated HT-29 cells. - Rat Genome Database

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Vitamin B6 suppresses serine protease inhibitor 3 expression in the colon of rats and in TNF-alpha-stimulated HT-29 cells.

Authors: Yanaka, N  Ohata, T  Toya, K  Kanda, M  Hirata, A  Kato, N 
Citation: Yanaka N, etal., Mol Nutr Food Res. 2011 Apr;55(4):635-43. doi: 10.1002/mnfr.201000282. Epub 2011 Jan 5.
RGD ID: 8662394
Pubmed: (View Article at PubMed) PMID:21462331
DOI: Full-text: DOI:10.1002/mnfr.201000282

SCOPE: Previous reports in the areas of animal studies and, recently epidemiology, have linked anti-tumorigenic and anti-inflammatory effects to dietary vitamin B6. This study investigated the molecular mechanism of these effects of vitamin B6. METHODS AND RESULTS: DNA microarray analysis was used to obtain information on changes in colon gene expression from vitamin B6 (pyridoxine) repletion in vitamin B6-deficient rats. Pyridoxine supplementation down-regulated the inflammatory molecule, serine protease inhibitor clade A member 3 (SPI-3) mRNA expression in the colon. This study also showed that tumor necrosis factor alpha (TNF-alpha) induced SPI-3 mRNA expression in HT-29 human colon cancer cells, and vitamin B6 (pyridoxal hydrochloride) pretreatment of HT-29 cells inhibited TNF -induced mRNA expression of SPI-3. Vitamin B6 inhibited TNF-alpha-induced NF-kappaB activation via suppression of IkappaBalpha degradation in HT-29 cells. HT-29 cells stably expressing epitope-tagged ubiquitin were generated and vitamin B6 pretreatment was shown to inhibit ubiquitination of the IkB protein in response to TNF-alpha-i. CONCLUSION: Vitamin B6 suppressed SPI-3 expression in the colon of rats and in TNF-alpha-stimulated HT-29 cells. Further, this study showed a possible role of vitamin B6 in the regulation of protein ubiquitination.



Gene Ontology Annotations    

Biological Process

Objects Annotated

Genes (Rattus norvegicus)
Serpina3n  (serine (or cysteine) peptidase inhibitor, clade A, member 3N)


Additional Information