title: MiRNA153 Reduces Effects of Chemotherapeutic Agents or Small Molecular Kinase Inhibitor in HCC Cells.
abstract: MicroRNA-153 (miR-153) is considered to be a tumor regulator. Silencing of miR-153 expression induced apoptosis in breast cancer cells. Data on mechanism suggest that up-regulation of miR- 153 level promotes cell proliferation via the down regulation of the expression of PTEN or FOXO1, which attenuates the proliferation of cancerous cells. This study aims to identify the effect of miR-153 on the activity of chemotherapeutic and targeted agents in HCC cells and to investigate the mechanisms involved. MTT, soft agar, trans-well and flow cytometry assays were performed to examine whether miR-153 down-regulated the activity of the chemotherapeutic and targeted drugs, Sorafenib, Etoposide and Paclitaxel in HCC cells. The rate of proliferation inhibition, relative survival rates and IC50 values of each drug were calculated. Western blot and luciferase assays were performed to assess whether miR-153 modulates the expression of important genes related to cell proliferation, apoptosis or survival. Results showed that miR-153 attenuated the effect of Etoposide, Paclitaxel and Sorafenib on HepG2 cells; the IC50 value increased from 0.25±0.01μmol/L to 1.02±0.14μmol/L, 0.05±0.01μmol/L to 0.14±0.02μmol/L and from 1.09±0.15μmol/L to 5.18±0.99μmol/L, respectively. In addition, miR-153 also reduced the effect of these drugs on MHCC- 97H, MHCC-97 L and L-02 cells; and it also reduced the effects of Sorafenib, Etoposide and Paclitaxel on anchor-independent growth of HepG2 cells. Over-expression of miR-153 down-regulated the activity of Etoposide and Paclitaxel on cell cycle arrest of HepG2 cells and the effect of Sorafenib on the invasion and migration of HepG2 cells. Furthermore, overexpression of miR-153 also enhanced the growth of HepG2, MHCC-97H, MHCC-97 L and L-02 cells. Mechanisms data showed that overexpression of miR-153 down regulated the activity of luciferase reporters, p15-Luc and p21-Luc; and enhanced the protein level of pro-survival or anti-apoptosis proteins Survivin and BCL-2. These results show that overexpression of miR-153 protects HepG2 cells against the effects of these drugs via multiple mechanisms, and miR-153 may be a novel target for HCC in future diagnostic and therapeutic interventions.
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.forename: Fan
authors.initials: F
authors.lastname: Feng
authors.forename: Xudong
authors.initials: X
authors.lastname: Gao
authors.forename: Chunping
authors.initials: C
authors.lastname: Wang
authors.forename: Huiwei
authors.initials: H
authors.lastname: Sun
authors.forename: Cuihong
authors.initials: C
authors.lastname: Zhang
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zeng
authors.forename: Yinying
authors.initials: Y
authors.lastname: Lu
authors.forename: Linjing
authors.initials: L
authors.lastname: An
authors.forename: Jianhui
authors.initials: J
authors.lastname: Qu
authors.forename: Fusheng
authors.initials: F
authors.lastname: Wang
authors.affiliation: Center of Therapeutic Research for Liver Cancer, Beijing the 302 Hospital, 100 Xi Si Huan Middle Road, Beijing 100039, China. yongpingyang@hotmail.com.
authors.forename: Yongping
authors.initials: Y
authors.lastname: Yang
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects / Q000235:genetics; D006528:Carcinoma, Hepatocellular / Q000188:drug therapy* / Q000235:genetics / Q000473:pathology; D059447:Cell Cycle Checkpoints / Q000187:drug effects / Q000235:genetics; D045744:Cell Line, Tumor / Q000187:drug effects; D002465:Cell Movement / Q000187:drug effects / Q000235:genetics; D005047:Etoposide / Q000494:pharmacology; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D056945:Hep G2 Cells; D006801:Humans; D008113:Liver Neoplasms / Q000188:drug therapy* / Q000235:genetics / Q000473:pathology; D035683:MicroRNAs / Q000235:genetics*; D058990:Molecular Targeted Therapy / Q000379:methods; D009536:Niacinamide / Q000031:analogs & derivatives / Q000494:pharmacology; D051059:PTEN Phosphohydrolase / Q000235:genetics / Q000378:metabolism; D017239:Paclitaxel / Q000494:pharmacology; D010671:Phenylurea Compounds / Q000494:pharmacology; D047428:Protein Kinase Inhibitors / Q000494:pharmacology*; D000077157:Sorafenib
chemical_list: D000970:Antineoplastic Agents; C556500:MIRN153 microRNA, human; D035683:MicroRNAs; D010671:Phenylurea Compounds; D047428:Protein Kinase Inhibitors; D009536:Niacinamide; D005047:Etoposide; D000077157:Sorafenib; D051059:PTEN Phosphohydrolase; C494929:PTEN protein, human; D017239:Paclitaxel