Abstract:
AIM:To investigate whether the apoptotic activities of 8-bromo-7-methoxychrysin (BrMC) involve reactive oxygen species (ROS) generation and c-Jun N-terminal kinase (JNK) activation in human hepatocellular carcinoma cells (HCC). METHODS:HepG2, Bel-7402 and L-02 cell lines were cultured in vitro and the apoptotic effects of BrMC were evaluated by flow cytometry (FCM) after propidium iodide (PI) staining, caspase-3 activity using enzyme-linked immunosorbent assay (ELISA), and DNA agarose gel electrophoresis. ROS production was evaluated by FCM after dichlorodihydrofluorescein diacetate (DCHF-DA) probe labeling. The phosphorylation level of JNK and c-Jun protein was analyzed by Western blotting. RESULTS:FCM after PI staining showed a dose-dependent increase in the percentage of the sub-G1 cell population (P < 0.05), reaching 39.0% +/- 2.8% of HepG2 cells after 48 h of treatment with BrMC at 10 micromol/L. The potency of BrMC to HepG2 and Bel-7402 (32.1% +/- 2.6%) cells was found to be more effective than the lead compound, chrysin (16.2% +/- 1.6% for HepG2 cells and 11.0% +/- 1.3% for Bel-7402 cell) at 40 micromol/L and similar to 5-fluorouracil (33.0% +/- 2.1% for HepG2 cells and 29.3% +/- 2.3% for Bel-7402 cells) at 10 micromol/L. BrMC had little effect on human embryo liver L-02 cells, with the percentage of sub-G1 cell population 5.4% +/- 1.8%. Treatment of HepG2 cells with BrMC for 48 h also increased the levels of active caspase-3, in a concentration-dependent manner. z-DEVD-fmk, a caspase-3-specific inhibitor, prevented the activation of caspase-3. Treatment with BrMC at 10 micromol/L for 48 h resulted in the formation of a DNA ladder. Treatment of cells with BrMC (10 micromol/L) increased mean fluorescence intensity of DCHF-DA in HepG2 cells from 7.2 +/- 1.12 at 0 h to 79.8 +/- 3.9 at 3 h and 89.7 +/- 4.7 at 6 h. BrMC did not affect ROS generation in L-02 cells. BrMC treatment failed to induce cell death and caspase-3 activation in HepG2 cells pretreated with N-acetylcysteine (10 mmol/L). In addition, in HepG2 cells treated with BrMC (2.5, 5.0, 10.0 micromol/L) for 12 h, JNK activation was observed. Peak JNK activation occurred at 12 h post-treatment and this activation persisted for up to 24 h. The expression of phosphorylated JNK and c-Jun protein after 12 h with BrMC-treated cells was inhibited by N-acetylcysteine and SP600125 pre-treatment, but GW9662 had no effect. SP600125 substantially reduced BrMC-induced cell death and caspase-3 activation of HepG2 cells. N-acetylcysteine and GW9662 also attenuated induction of cell death and caspase-3 activation in HepG2 cells treated with BrMC. CONCLUSION:BrMC induces apoptosis of HCC cells by ROS generation and sustained JNK activation.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Yang XH,Zheng X,Cao JG,Xiang HL,Liu F,Lv Ydoi
10.3748/wjg.v16.i27.3385subject
Has Abstractpub_date
2010-07-21 00:00:00pages
3385-93issue
27eissn
1007-9327issn
2219-2840journal_volume
16pub_type
杂志文章abstract:AIM:To prospectively investigate the effectiveness and patient's tolerance of two low-cost bowel cleansing preparation protocols based on magnesium citrate only or the combination of magnesium citrate and senna. METHODS:A total of 342 patients who were referred for colonoscopy underwent a colon cleansing protocol with...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.15.1759
更新日期:2009-04-14 00:00:00
abstract:AIM:To investigate whether suspected blood indicator (SBI) in capsule endoscopy (CE) is affected by background color and capsule passage velocity. METHODS:Experimental models of the small intestine constructed from paper in a variety of colors were used to simulate the background colors observed in CE images. The back...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v18.i31.4169
更新日期:2012-08-21 00:00:00
abstract::AIM:To clone core gene cDNA of Chinese hepatitis C virus (HCV) into eukaryotic expression vector cosmid pTM3 and to express HCV core antigen in HepG2 cells.METHODS:Core gene cDNA of HCV was introduced into eukaryotic expression vector cosmid pTM3.Using vaccinia virus/bacteriophage T7 hybrid expression system, HepG2 ce...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v6.i2.220
更新日期:2000-04-01 00:00:00
abstract:AIM:To evaluate the effect of the shunting branch of the portal vein (PV) (left or right) and the initial stent position (optimal or suboptimal) of a transjugular intrahepatic portosystemic shunt (TIPS). METHODS:We retrospectively reviewed 307 consecutive cirrhotic patients who underwent TIPS placement for variceal bl...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v20.i3.774
更新日期:2014-01-21 00:00:00
abstract:AIM:To identify the predictive clinicopathological factors for lymph node metastasis (LNM) in poorly differentiated early gastric cancer (EGC) and to further expand the possibility of using endoscopic mucosal resection (EMR) for the treatment of poorly differentiated EGC. METHODS:Data were collected from 85 poorly-dif...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.4222
更新日期:2008-07-14 00:00:00
abstract:AIM:To investigate the correlation between ezrin expression and invasive phenotype formation in malignantly transformed esophageal epithelial cells. METHODS:The experimental cell line employed in the present study was originated form the progressive induction of a human embryonic esophageal epithelial cell line (SHEE)...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v9.i6.1182
更新日期:2003-06-01 00:00:00
abstract:AIM:To evaluate gastric motility using electrical bio-impedance (EBI) and gastric changes as a result of stress induced by psychological tests. METHODS:A group of 57 healthy women, aged 40-60 years, was recruited, and a clinical history and physical examination were performed. The women were free from severe anxiety, ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v18.i36.5027
更新日期:2012-09-28 00:00:00
abstract::A 83-year-old woman was admitted to our hospital because of intermittent abdominal colicky pain and vomiting for 26 h. The pain localized over the periumbilical area with radiation along the medial side of the thigh. Computed tomography scan with three-dimensional reconstruction revealed a loop of small bowel protrudi...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v16.i1.126
更新日期:2010-01-07 00:00:00
abstract:AIM:To investigate the mechanism of chaperone-mediated autophagy (CMA)-induced resistance to irradiation-triggered apoptosis through regulation of the p53 protein in hepatocellular carcinoma (HCC). METHODS:Firstly, we detected expression of lysosome-associated membrane protein 2a (Lamp-2a), which is the key protein of...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i13.2308
更新日期:2017-04-07 00:00:00
abstract:AIM:To assess NY-ESO-1 expression in a cohort of esophageal adenocarcinomas. METHODS:A retrospective search of our tissue archive for esophageal resection specimens containing esophageal adenocarcinoma was performed, for cases which had previously been reported for diagnostic purposes, using the systematised nomenclat...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v20.i14.4011
更新日期:2014-04-14 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析,评审
doi:10.3748/wjg.v22.i10.3038
更新日期:2016-03-14 00:00:00
abstract:AIM:To investigate whether octreotide can inhibit the growth of human gallbladder cancer cells in vitro and to elucidate the antineoplastic mechanism of octreotide in gallbladder cancer. METHODS:A human gallbladder cancer cell line, GBC-SD, was cultured in vitro. The antiproliferative effects of octreotide were examin...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v10.i7.1043
更新日期:2004-04-01 00:00:00
abstract:AIM:To study the beneficial effects of triterpene alpha,beta-amyrin and the underlying mechanisms in an experimental pancreatitis model. METHODS:Acute pancreatitis was induced in five groups of rats (n = 8) by L-arginine (2 x 2.5 g/kg, intraperitoneal, 1 h apart) and 1 h later, they received a single oral dose of alph...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v16.i34.4272
更新日期:2010-09-14 00:00:00
abstract:AIM:To evaluate the agreement of multichannel intraluminal impedance-pH monitoring (MII-pHM) and gastroesophageal reflux scintigraphy (GES) for the diagnosis of gastroesophageal reflux disease. METHODS:Seventy-five consecutive patients with suspected gastroesophageal reflux disease (GERD) underwent 24-h combined MII-p...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v22.i43.9595
更新日期:2016-11-21 00:00:00
abstract::Chronic hepatitis B virus (HBV) infection is the most common cause of hepatic fibrosis and hepatocellular carcinoma (HCC), mainly as a result of chronic necroinflammatory liver disease. A characteristic feature of chronic hepatitis B infection, alcoholic liver disease and nonalcoholic fatty liver disease (NAFLD) is he...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v13.i32.4295
更新日期:2007-08-28 00:00:00
abstract:AIM:To investigate the pattern of mucin expression and concentration in bile obtained during endoscopic retrograde cholangiography (ERC) in relation to gallstone disease. METHODS:Bile samples obtained at ERC from 29 consecutive patients, 17 with and 12 without gallstone disease were evaluated for mucin content by gel ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.15.2367
更新日期:2009-05-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v21.i11.3325
更新日期:2015-03-21 00:00:00
abstract:AIM:To evaluate the therapeutic effectiveness of oxaliplatin on human gastric carcinoma and to explore its mechanisms. METHODS:Twenty-two cases of stage IV gastric carcinoma received 4-6 (mean 4.6) cycles of first line combined chemotherapy with oxaliplatin (oxaliplatin 85 mg/m(2), iv, gtt, 1 h, d 1; leukovorin 200 mg...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v10.i19.2911
更新日期:2004-10-01 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
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更新日期:2015-01-21 00:00:00
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journal_title:World journal of gastroenterology
pub_type: 杂志文章
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更新日期:2003-01-01 00:00:00
abstract:AIM:To determine the evolution of transient elastography (TE) in patients with alcoholic liver disease according to alcohol cessation or continuation. METHODS:We retrospectively selected in our local database all patients who had two TE between June 2005 and November 2010 with chronic alcohol excessive consumption and...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i4.516
更新日期:2013-01-28 00:00:00
abstract:BACKGROUND:Early diagnosis of hepatocellular carcinoma may help to ensure that patients have a chance for long-term survival; however, currently available biomarkers lack sensitivity and specificity. AIM:To characterize the serum metabolome of hepatocellular carcinoma in order to develop a new metabolomics diagnostic ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v26.i31.4607
更新日期:2020-08-21 00:00:00
abstract:AIM:To assess the incidence and risk factors associated with colonic perforation due to colonoscopy. METHODS:This was a retrospective cross-sectional study. Patients were retrospectively eligible for inclusion if they were 18 years and older and had an inpatient or outpatient colonoscopy procedure code in any facility...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v19.i23.3596
更新日期:2013-06-21 00:00:00
abstract:AIM:To assess the safety of bismuth used in Helicobacter pylori (H pylori) eradication therapy regimens. METHODS:We conducted a systematic review and meta-analysis. MEDLINE and EMBASE were searched (up to October 2007) to identify randomised controlled trials comparing bismuth with placebo or no treatment, or bismuth ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,meta分析,评审
doi:10.3748/wjg.14.7361
更新日期:2008-12-28 00:00:00
abstract::Pseudo-Meigs' syndrome associated with colorectal cancer is extremely rare. We report here a case of pseudo-Meigs' syndrome secondary to metachronous ovarian metastases from colon cancer. A 65-year-old female with a history of surgery for transverse colon cancer and peritoneal dissemination suffered from metachronous ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v22.i18.4604
更新日期:2016-05-14 00:00:00
abstract:AIM:To investigate the frequency of serum IgA-antiendomysial antibody positivity in patients with low bone mineral density and to assess the risk group for screening of celiac disease. METHODS:One hundred and thirty-five patients (14 male, 121 female) with idiopathic low bone mineral density were evaluated. The median...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v13.i21.2978
更新日期:2007-06-07 00:00:00
abstract:AIM:To explore the expression of macrophage inflammatory protein-1alpha (MIP-1alpha) in Kupffer cells (KCs) following liver ischemia/reperfusion injury IRI in rats. METHODS:Forty male SD rats were divided randomly into five groups. A model of partial warm ischemia/reperfusion injury in the rat liver was established. K...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i24.3854
更新日期:2006-06-28 00:00:00
abstract::Renal cell carcinoma (RCC) is the most common renal tumor, accounting for 2%-3% of all malignancies. Though RCC is known to spread hematogenously, isolated RCC metastasis to the stomach is a rare event. In this article, we describe the clinical course of a patient who developed a pancreatic recurrence of RCC and 1 yea...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i32.5234
更新日期:2006-08-28 00:00:00
abstract:AIM:To compare the efficacy and safety of a hook knife (HO) with a hybrid knife (HK) during endoscopic submucosal tunnel dissection (ESTD) procedure. METHODS:Between August 2012 and December 2015, the ESTD procedure was performed for 83 upper GI submucosal lesions, which originated from the muscularis propria layer id...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i10.1843
更新日期:2017-03-14 00:00:00
abstract::E2F family of transcription factors regulates various cellular functions related to cell cycle and apoptosis. Its individual members have traditionally been classified into activators and repressors, based on in vitro studies. However their contribution in human cancer is more complicated and difficult to predict. We ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v19.i21.3189
更新日期:2013-06-07 00:00:00