PMID- 30358228 OWN - NLM STAT- MEDLINE DCOM- 20190919 LR - 20211204 IS - 1107-0625 (Print) IS - 1107-0625 (Linking) VI - 23 IP - 4 DP - 2018 Jul-Aug TI - Methyl eugenol induces potent anticancer effects in RB355 human retinoblastoma cells by inducing autophagy, cell cycle arrest and inhibition of PI3K/mTOR/Akt signalling pathway. PG - 1174-1178 AB - PURPOSE: Retinoblastoma is one of the lethal malignancies in children. Approximately half of the children that are diagnosed with retinoblastoma die of this disease. Enucleation is commonly used for the treatment of retinoblastoma but this leads to loss of vision. Therefore there is an urgent need to look for viable chemotherapeutic agents for the treatment of retinoblastoma. Consistent with this, natural products can produce efficient anticancer agents and in the present study a plant-derived phenylpropene methyl eugenol (ME) was evaluated against retinoblastoma RB355 cells. METHODS: The cytotoxic activity of this molecule was evaluated by MTT cell viability assay, while autophagic effects were evaluated by flow cytometry using acridine orange (AO)/monodansylcadaverine (AO/MDC) staining dyes. The effects on the cell cycle progression were analyzed by flow cytometry while the effects on mTOR/PI3K/Akt signalling pathway were assessed by western blot method. RESULTS: The results indicated that ME exhibited an IC50 value of 50 muM and exerted its cytotoxic effects in a dosedependent manner in RB355 cells. Moreover, it was observed that the ME lessens the cell viability and triggers G2/M cell cycle arrest. It was also observed that ME induced autophagy dose-dependently in retinoblastoma RB355 cells. Western blot analysis revealed that ME could modulate the mTOR/ PI3K/Akt signalling pathway in RB355 cells at the IC50 concentration. CONCLUSIONS: The above results clearly indicate that ME is a potent anticancer agent and may be developed further as a possible anticancer lead molecule against retinoblastoma provided further in depth in vivo studies are carried out. FAU - Yin, Li AU - Yin L AD - Department of Ophthalmology, the First Hospital of Shijiazhung, Shijiazhuang 050000, China. FAU - Sun, Zhaohui AU - Sun Z FAU - Ren, Qian AU - Ren Q FAU - Su, Xian AU - Su X FAU - Zhang, Delong AU - Zhang D LA - eng PT - Journal Article PL - Cyprus TA - J BUON JT - Journal of B.U.ON. : official journal of the Balkan Union of Oncology JID - 100883428 RN - 0 (Anticarcinogenic Agents) RN - 0 (Phosphoinositide-3 Kinase Inhibitors) RN - 29T9VA6R7M (methyleugenol) RN - 3T8H1794QW (Eugenol) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Anticarcinogenic Agents/pharmacology/*therapeutic use MH - Autophagy/drug effects MH - Cell Cycle Checkpoints/drug effects MH - Eugenol/*analogs & derivatives/pharmacology MH - Flow Cytometry MH - Humans MH - Microbial Sensitivity Tests MH - Phosphatidylinositol 3-Kinases/metabolism MH - *Phosphoinositide-3 Kinase Inhibitors MH - Proto-Oncogene Proteins c-akt/*antagonists & inhibitors/metabolism MH - Retinoblastoma/*drug therapy/metabolism/pathology MH - Signal Transduction/drug effects MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors/metabolism EDAT- 2018/10/26 06:00 MHDA- 2019/09/20 06:00 CRDT- 2018/10/26 06:00 PHST- 2018/10/26 06:00 [entrez] PHST- 2018/10/26 06:00 [pubmed] PHST- 2019/09/20 06:00 [medline] PST - ppublish SO - J BUON. 2018 Jul-Aug;23(4):1174-1178.