Histone Acetylation May Suppress Human Glioma Cell Proliferation When P21waf/Cip1 and Gelsolin Are Induced
Neuro-Oncology Histone acetylation may suppress human glioma cell proliferation when p21WAF/Cip1 and gelsolin are induced Hideki Kamitani, 1 Seijiro Taniura, Kenji Watanabe, Makoto Sakamoto, Takashi Watanabe, and Thomas Eling Department of Neurosurgery, Institute of Neurological Sciences, Faculty of Medicine, Tottori University, Yonago, 683-8504 Japan (H.K., S.T., K.W., M.S., T.W.); Laboratory of Molecular Carcinogenesis, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709 (S.T., T.E.) Histonedeacetylase inhibitors that increasehistone acety- stimulates apoptosis, and that associated molecular lation on transformed cellsare being investigated as mechanismsresponsible for theseeffects include unique anticancer drugs. Theaim of this investigation increasedhistone acetylation as wellas enhanced expres- was to evaluate an antiproliferative activity of the histone sion of p21 and gelsolin. Neuro-Oncology 4, 95–101, deacetylase inhibitors sodium butyrate (NaBT)and tri- 2002 (Posted to Neuro-Oncology [serial online], Doc. chostatin Aon 5glioma celllines, T98G, A172, U-87 MG, 01-056, March 1, 2002. URL <neuro-oncology.mc. U-118 MG,and U-373 MG,with the examination of the duke.edu>) altered expressions in p21 and gelsolin genes. Treatment with 5-mMNaBT and 40 ng/mltrichostatin Afor 48 h ftersurgical resectionof glioblastomas and anaplas- caused morethan a50% growth inhibition in 5cell ticgliomas, chemotherapy in combination with lines as measuredby cell proliferation assays. An radiotherapy iscurrently one of the primeadjuvant increasein histone acetylation wascon rmed in each cell A treatments(Brandes etal., 2000). Nitrosourea and plat- line. Aftertreatment with 5mMNaBT ,T98G, A172, inum drugs are widely administered to glioma patients and U118 cellsundergo apoptosis as indicated by DNA (Frenay etal., 2000; Shapiro etal., 1989; Takakura etal., ladder formation.
[Show full text]