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See Latest ArticlesInhibition of bladder tumour growth by histone deacetylase inhibitor
BJU International, 08/14/09
Ozawa A et al. – In a study to examine the expression profile of histone deacetylase (HDAC)-1 and explore its potential role in the development of bladder cancer, using valproic acid (VPA), which reduces tumour growth and metastasis formation in animal models, these results indicate that HDAC might be an effective molecular target for cancer therapy.
Methods- The study comprised clinical samples from pts with urinary bladder cancer, mouse urinary bladder tissue specimens, and 2 human urinary bladder cancer cell lines (HT-1376 and 5637).
- HDAC1 mRNA and protein expression were examined using real-time reverse transcription-polymerase chain reaction and immunohistochemical methods.
- Female C3H/He mice were given VPA (0, 250, 500 and 750 mg/kg body weight, intraperitoneal, every day) from the start or 4 wks after 0.05%N-butyl-N-(4-hydroxybutyl)-nitrosamine (BBN) treatment, and were humanely killed and sampled at 8 and 12 wks.
- A significantly higher level of HDAC1 mRNA was expressed in human urinary bladder cancer specimens.
- Immunohistochemical study showed that HDAC1 was expressed in the cytoplasm and nucleus in the specimens.
- BBN treatment increased HDAC1 mRNA expression in the urinary bladder.
- VPA administration seemed to delay the incidences of BBN-induced mouse urinary bladder tumour, possibly through p21WAF1 protein expression.
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