Although our previous study revealed lumbar punctured resveratrol could remarkably prolong the survival of rats bearing orthotopic glioblastomas, it also suggested the administration did not completely suppress rapid tumour growth. These evidences led us to consider that the prognosis of tumour-bearing rats may be further improved if this treatment is used in combination with neurosurgery. Therefore, we investigated the effectiveness of the combined treatment on rat orthotopic glioblastomas.
Rat RG2 glioblastoma cells were inoculated into the brains of 36 rats. The rats were subjected to partial tumour removal after they showed symptoms of intracranial hypertension. There were 28 rats that survived the surgery, and these animals were randomly and equally divided into the control group without postoperative treatment and the LP group treated with 100 μl of 300 μM resveratrol via the LP route. Resveratrol was administered 24 h after tumour resection in 3-day intervals, and the animals received 7 treatments. The intracranial tumour sizes, average life span, cell apoptosis and STAT3 signalling were evaluated by multiple experimental approaches in the tumour tissues harvested from both groups.
The results showed that 5 of the 14 (35.7%) rats in the LP group remained alive over 60 days without any sign of recurrence. The remaining nine animals had a longer mean postoperative survival time (11.0 ± 2.9 days) than that of the (7.3 + 1.3 days; p < 0.05) control group. The resveratrol-treated tumour tissues showed less Ki67 labelling, widely distributed apoptotic regions, upregulated PIAS3 expression and reduced p-STAT3 nuclear translocation.
This study demonstrates that postoperative resveratrol administration efficiently improves the prognosis of rat advanced orthotopic glioblastoma via inhibition of growth, induction of apoptosis and inactivation of STAT3 signalling. Therefore, this therapeutic approach could be of potential practical value in the management of glioblastomas.
Bourgonje AM, Verrijp K, Schepens JT, Navis AC, Piepers JA, Palmen CB, van den Eijnden M, Hooft van Huijsduijnen R, Wesseling P, Leenders WPY, et al. Comprehensive protein tyrosine phosphatase mRNA profiling identifies new regulators in the progression of glioma. Acta Neuropathol Commun. 2016;4(1):96. CrossRefPubMedPubMedCentral
Lu-Emerson C, Snuderl M, Kirkpatrick ND, Goveia J, Davidson C, Huang Y, Riedemann L, Taylor J, Ivy P, Duda DG, et al. Increase in tumor-associated macrophages after antiangiogenic therapy is associated with poor survival among patients with recurrent glioblastoma. Neuro-Oncology. 2017;15(8):1079–87. CrossRef
Chang KY, Hsu TI, Hsu CC, Tsai SY, Liu JJ, Chou SW, Liu MS, Liou JP, Ko CY, Chen KY, et al. Specificity protein 1-modulated superoxide dismutase 2 enhances temozolomide resistance in glioblastoma, which is independent of O6-methylguanine-DNA methyltransferase. Redox Biol. 2017;13:655–64. CrossRefPubMedPubMedCentral
Pallàs M, Ortuño-Sahagún D, Benito-Andrés P, PonceRegalado MD, Rojas-Mayorquín AE. Resveratrol in epilepsy: preventive or treatment opportunities? Front Biosci. 2014;19:1057–64. CrossRef
Gambini J, Inglés M, Olaso G, Lopez-Grueso R, Bonet-Costa V, Gimeno-Mallench L, Mas-Bargues C, Abdelaziz KM, Gomez-Cabrera MC, Vina J, et al. Properties of resveratrol: in vitro and in vivo studies about metabolism, bioavailability, and biological effects in animal models and humans. Oxidative Med Cell Longev. 2015;2015:837042. CrossRef
Ferrucci M, Biagioni F, Lenzi P, Gambardella S, Ferese R, Calierno MT, Falleni A, Grimaldi A, Frati A, Esposito V, et al. Rapamycin promotes differentiation increasing βIII-tubulin, NeuN, and NeuroD while suppressing nestin expression in glioblastoma cells. Oncotarget. 2017;8(18):29574–99. CrossRefPubMedPubMedCentral
Levinsen M, Taskinen M, Abrahamsson J, Forestier E, Frandsen TL, Harila-Saari A, Heyman M, Jonsson OG, Lähteenmäki PM, Lausen B, et al. Clinical features and early treatment response of central nervous system involvement in childhood acute lymphoblastic leukemia. Pediatr Blood Cancer. 2014;61(8):1416–21. CrossRefPubMed
- Postoperative resveratrol administration improves prognosis of rat orthotopic glioblastomas
- BioMed Central
Neu im Fachgebiet Onkologie
Mail Icon II