Stable expression of human cytochrome P450 2D6*10 in HepG2 cells.

Abstract:

AIM:Over 90% of drugs are metabolized by the cytochrome P-450 (CYP) family of liver isoenzymes. The most important enzymes are CYP1A2, 3A4, 2C9/19, 2D6 and 2E1. Although CYP2D6 accounts for <2% of the total CYP liver enzyme content, it mediates metabolism in almost 25% of drugs. In order to study its enzymatic activity for drug metabolism, its cDNA was cloned and a HepG2 cell line stably expressing CYP2D6 was established. METHODS:Human CYP2D6 cDNA was amplified with reverse transcription-polymerase chain reaction (RT-PCR) from total RNA extracted from human liver tissue and cloned into pGEM-T vector. cDNA segment was identified by DNA sequencing and subcloned into a mammalian expression vector pREP9. A cell line was established by transfecting the recombinant plasmid of pREP9-CYP2D6 to hepatoma HepG2 cells. Expression of mRNA was validated by RT-PCR. Enzyme activity of catalyzing dextromethorphan O-demethylation in postmitochondrial supernatant (S9) fraction of the cells was determined by high performance liquid chromatography (HPLC). RESULTS:The cloned cDNA had 4 base differences, e.g. 100 C-T, 336 T-C, 408 C-G and 1 457 G-C, which resulted in P34S, and S486T amino acid substitutions, and two samesense mutations were 112 F and 136 V compared with that reported by Kimura et al (GenBank accession number: M33388). P34S and S486T amino acid substitutions were the characteristics of CYP2D6*10 allele. The relative activity of S9 fraction of HepG2-CYP2D6*10 metabolized detromethorphan O-demethylation was found to be 2.31 +/- 0.19 nmol/min(-1)/mg(-1) S9 protein (n=3), but was undetectable in parental HepG2 cells. CONCLUSION:cDNA of human CYP2D6*10 can be successfully cloned. A cell line, HepG2-CYP2D6*10, expressing CYP2D6*10 mRNA and having metabolic activity, has been established.

journal_name

World J Gastroenterol

authors

Zhuge J,Yu YN,Wu XD

doi

10.3748/wjg.v10.i2.234

keywords:

subject

Has Abstract

pub_date

2004-01-15 00:00:00

pages

234-7

issue

2

eissn

1007-9327

issn

2219-2840

journal_volume

10

pub_type

杂志文章
  • Autoantibodies in primary sclerosing cholangitis.

    abstract::The aetiology of primary sclerosing cholangitis (PSC) is not known and controversy exists as to whether PSC should be denominated an autoimmune disease. A large number of autoantibodies have been detected in PSC patients, but the specificity of these antibodies is generally low, and the frequencies vary largely betwee...

    journal_title:World journal of gastroenterology

    pub_type: 社论,评审

    doi:10.3748/wjg.14.3781

    authors: Hov JR,Boberg KM,Karlsen TH

    更新日期:2008-06-28 00:00:00

  • Colorectal cancer and 18FDG-PET/CT: what about adding the T to the N parameter in loco-regional staging?

    abstract:AIM:To evaluate whether FDG-positron emission tomography (PET)/computed tomography (CT) may be an accurate technique in the assessment of the T stage in patients with colorectal cancer. METHODS:Thirty four consecutive patients (20 men and 14 women; mean age: 63 years) with a histologically proven diagnosis of colorect...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v17.i11.1427

    authors: Mainenti PP,Iodice D,Segreto S,Storto G,Magliulo M,De Palma GD,Salvatore M,Pace L

    更新日期:2011-03-21 00:00:00

  • Female hepatology: favorable role of estrogen in chronic liver disease with hepatitis B virus infection.

    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

    authors: Shimizu I,Kohno N,Tamaki K,Shono M,Huang HW,He JH,Yao DF

    更新日期:2007-08-28 00:00:00

  • Interaction of major genes predisposing to hepatocellular carcinoma with genes encoding signal transduction pathways influences tumor phenotype and prognosis.

    abstract::Studies on rodents and humans demonstrate an inherited predisposition to hepatocellular carcinoma (HCC). Analysis of the molecular alterations involved in the acquisition of a phenotype resistant or susceptible to hepatocarcinogenesis showed a deregulation of G1 and S phases in HCC of genetically susceptible F344 rats...

    journal_title:World journal of gastroenterology

    pub_type: 社论

    doi:10.3748/wjg.14.6601

    authors: Feo F,Frau M,Pascale RM

    更新日期:2008-11-21 00:00:00

  • Massive gastrointestinal tuberculosis in a young patient without immunosuppression.

    abstract::Although the lung is the major site for Mycobacterium tuberculosis infection, gastrointestinal involvement can be present as part of multiorgan disease process or, less commonly, can be seen as primary gastrointestinal tuberculosis. In the cases where the culture is negative, it can be difficult to differentiate tuber...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v9.i10.2382

    authors: Settbas Y,Alper M,Akcan Y,Gurbuz Y,Oksuz S

    更新日期:2003-10-01 00:00:00

  • Values of mutations of K-ras oncogene at codon 12 in detection of pancreatic cancer: 15-year experience.

    abstract:AIM:To summarize progress in the study of K-ras gene studies in pancreatic cancer and its potential clinical significance in screening test for early detection of pancreatic cancer, and to differentiate pancreatic cancer from chronic pancreatitis in recent decade. METHODS:Literature search (MEDLINE 1986-2003) was perf...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v10.i4.471

    authors: Mu DQ,Peng YS,Xu QJ

    更新日期:2004-02-15 00:00:00

  • Hepatitis B-related events in autologous hematopoietic stem cell transplantation recipients.

    abstract:AIM:To investigate the frequency of occult hepatitis B, the clinical course of hepatitis B virus (HBV) reactivation and reverse seroconversion and associated risk factors in autologous hematopoietic stem cell transplantation (HSCT) recipients. METHODS:This study was conducted in 90 patients undergoing autologous HSCT....

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v16.i14.1765

    authors: Ceneli O,Ozkurt ZN,Acar K,Rota S,Aki SZ,Yeğin ZA,Yağci M,Ozenirler S,Sucak GT

    更新日期:2010-04-14 00:00:00

  • Liuweiwuling tablets attenuate acetaminophen-induced acute liver injury and promote liver regeneration in mice.

    abstract:AIM:To explore the mechanism of protection against acetaminophen-induced acute liver injury by Liuweiwuling tablets. METHODS:Intraperitoneal injections of acetaminophen (250 mg/kg) were used to induce acute liver injury in male C57BL/6 mice. A total of 24 healthy mice were randomly assigned to two groups: an acute liv...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v21.i26.8089

    authors: Lei YC,Li W,Luo P

    更新日期:2015-07-14 00:00:00

  • Current treatment for liver metastases from colorectal cancer.

    abstract::The liver is the commonest site of distant metastasis of colorectal cancer and nearly half of the patients with colorectal cancer ultimately develop liver involved during the course of their diseases. Surgery is the only therapy that offers the possibility of cure for patients with hepatic metastatic diseases. Five-ye...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v9.i2.193

    authors: Liu LX,Zhang WH,Jiang HC

    更新日期:2003-02-01 00:00:00

  • Prospective observational multicenter study to define a diagnostic algorithm for biliary candidiasis.

    abstract:AIM:To develop an algorithm to improve the diagnosis and treatment of patients with biliary candidiasis. METHODS:We performed a prospective study of 127 patients who underwent endoscopic retrograde cholangiopancreatography, for various biliary disorders, at 3 tertiary referral centers in Germany from July 2011 through...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,多中心研究

    doi:10.3748/wjg.v20.i34.12260

    authors: Lenz P,Eckelskemper F,Erichsen T,Lankisch T,Dechêne A,Lubritz G,Lenze F,Beyna T,Ullerich H,Schmedt A,Domagk D

    更新日期:2014-09-14 00:00:00

  • Epigenetic regulation of DNA repair machinery in Helicobacter pylori-induced gastric carcinogenesis.

    abstract::Although thousands of DNA damaging events occur in each cell every day, efficient DNA repair pathways have evolved to counteract them. The DNA repair machinery plays a key role in maintaining genomic stability by avoiding the maintenance of mutations. The DNA repair enzymes continuously monitor the chromosomes to corr...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v21.i30.9021

    authors: Santos JC,Ribeiro ML

    更新日期:2015-08-14 00:00:00

  • Caffeic acid phenethyl ester up-regulates antioxidant levels in hepatic stellate cell line T6 via an Nrf2-mediated mitogen activated protein kinases pathway.

    abstract:AIM:To investigate the antioxidant effect of caffeic acid phenethyl ester (CAPE) in hepatic stellate cell-T6 (HSC-T6) cells cultured in vitro and the potential mechanisms. METHODS:HSC-T6 cells were cultured in vitro and treated with various concentrations of CAPE for 24, 48 and 72 h, respectively. Cell proliferation w...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v23.i7.1203

    authors: Yang N,Shi JJ,Wu FP,Li M,Zhang X,Li YP,Zhai S,Jia XL,Dang SS

    更新日期:2017-02-21 00:00:00

  • Diagnostic value of gadobenate dimeglumine-enhanced hepatocyte-phase magnetic resonance imaging in evaluating hepatic fibrosis and hepatitis.

    abstract:AIM:To evaluate the diagnostic value of gadobenate dimeglumine (Gd-BOPTA)-enhanced hepatocyte-phase magnetic resonance imaging (MRI) in evaluating hepatic fibrosis and hepatitis. METHODS:Hepatocyte-phase images of Gd-BOPTA-enhanced MRI were retrospectively evaluated in 76 patients with chronic liver disease. These pat...

    journal_title:World journal of gastroenterology

    pub_type: 临床试验,杂志文章

    doi:10.3748/wjg.v23.i17.3133

    authors: Li XM,Chen Z,Xiao EH,Shang QL,Ma C

    更新日期:2017-05-07 00:00:00

  • Effect of DA-9701 on gastric emptying in a mouse model: assessment by ¹³C-octanoic acid breath test.

    abstract:AIM:To evaluate the effects of DA-9701 on the gastric emptying of a solid meal using the ¹³C-octanoic acid breath test in a mouse model. METHODS:Male C57BL/6 mice aged > 8 wk and with body weights of 20-25 g were used in this study. The solid test meal consisted of 200 mg of egg yolk labeled with 1.5 L/g ¹³C-octanoic ...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v19.i27.4380

    authors: Lim CH,Choi MG,Park H,Baeg MK,Park JM

    更新日期:2013-07-21 00:00:00

  • Metabolic inflammation as an instigator of fibrosis during non-alcoholic fatty liver disease.

    abstract::Non-alcoholic fatty liver disease (NAFLD) is characterized by excessive storage of fatty acids in the form of triglycerides in hepatocytes. It is most prevalent in western countries and includes a wide range of clinical and histopathological findings, namely from simple steatosis to steatohepatitis and fibrosis, which...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v26.i17.1993

    authors: Katsarou A,Moustakas II,Pyrina I,Lembessis P,Koutsilieris M,Chatzigeorgiou A

    更新日期:2020-05-07 00:00:00

  • Fixation methods for electron microscopy of human and other liver.

    abstract::For an electron microscopic study of the liver, expertise and complicated, time-consuming processing of hepatic tissues and cells is needed. The interpretation of electron microscopy (EM) images requires knowledge of the liver fine structure and experience with the numerous artifacts in fixation, embedding, sectioning...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v16.i23.2851

    authors: Wisse E,Braet F,Duimel H,Vreuls C,Koek G,Olde Damink SW,van den Broek MA,De Geest B,Dejong CH,Tateno C,Frederik P

    更新日期:2010-06-21 00:00:00

  • Clinical and experimental study of oxaliplatin in treating human gastric carcinoma.

    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

    authors: Lin WL,Li DG,Chen Q,Lu HM

    更新日期:2004-10-01 00:00:00

  • Endoscopic band ligation and endoscopic hemoclip placement for patients with Mallory-Weiss syndrome and active bleeding.

    abstract:AIM:To compare the hemostatic efficacy and safety of two mechanical endoscopic methods: endoscopic band ligation (EBL) and endoscopic hemoclip placement (EHP) in patients with actively bleeding Mallory-Weiss syndrome (MWS). METHODS:A prospective randomized study to compare the efficacy and safety of EHP with EBL was p...

    journal_title:World journal of gastroenterology

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.3748/wjg.14.2080

    authors: Cho YS,Chae HS,Kim HK,Kim JS,Kim BW,Kim SS,Han SW,Choi KY

    更新日期:2008-04-07 00:00:00

  • Comprehensive screening for reg1alpha gene rules out association with tropical calcific pancreatitis.

    abstract:AIM:To investigate the allelic and haplotypic association of reg1alpha gene with tropical calcific pancreatitis (TCP). Since TCP is known to have a variable genetic basis, we investigated the interaction between mutations in the susceptibility genes, SPINK1 and CTSB with reg1alpha polymorphisms. METHODS:We analyzed th...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v13.i44.5938

    authors: Mahurkar S,Bhaskar S,Reddy DN,Rao GV,Chandak GR

    更新日期:2007-11-28 00:00:00

  • Importance of adequate immunosuppressive therapy for the recovery of patients with "life-threatening" severe exacerbation of chronic hepatitis B.

    abstract:AIM:Hepatitis B virus (HBV) re-activation often occurs spontaneously or after withdrawal of immunosuppressive therapy in patients with chronic hepatitis B. Severe exacerbation, sometimes developing into fulminant hepatic failure, is at high risk of mortality. The efficacy of corticosteroid therapy in "clinically severe...

    journal_title:World journal of gastroenterology

    pub_type: 临床试验,杂志文章

    doi:10.3748/wjg.v11.i8.1109

    authors: Fujiwara K,Yokosuka O,Kojima H,Kanda T,Saisho H,Hirasawa H,Suzuki H

    更新日期:2005-02-28 00:00:00

  • Rebamipide suppresses diclofenac-induced intestinal permeability via mitochondrial protection in mice.

    abstract:AIM:To investigate the protective effect and mechanism of rebamipide on small intestinal permeability induced by diclofenac in mice. METHODS:Diclofenac (2.5 mg/kg) was administered once daily for 3 d orally. A control group received the vehicle by gavage. Rebamipide (100 mg/kg, 200 mg/kg, 400 mg/kg) was administered i...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v18.i10.1059

    authors: Diao L,Mei Q,Xu JM,Liu XC,Hu J,Jin J,Yao Q,Chen ML

    更新日期:2012-03-14 00:00:00

  • Transient elastography improves detection of liver cirrhosis compared to routine screening tests.

    abstract:AIM:To investigate the diagnostic significance of transient elastography (TE) in a daily routine clinical setting in comparison to clinical signs, laboratory parameters and ultrasound. METHODS:TE, ultrasound, laboratory parameters and cutaneous liver signs were assessed in 291 consecutive patients with chronic liver d...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v21.i3.953

    authors: Göbel T,Schadewaldt-Tümmers J,Greiner L,Poremba C,Häussinger D,Erhardt A

    更新日期:2015-01-21 00:00:00

  • Risk of postoperative recurrence and postoperative management of Crohn's disease.

    abstract::Crohn's disease (CD) is a chronic inflammatory disease of the digestive tract with systemic manifestations. Etiology is unknown, even if immunological, genetic and environmental factors are involved. The majority of CD patients require surgery during their lifetime due to progressive bowel damage, but, even when all m...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,评审

    doi:10.3748/wjg.v17.i27.3213

    authors: Spinelli A,Sacchi M,Fiorino G,Danese S,Montorsi M

    更新日期:2011-07-21 00:00:00

  • Successful treatment of giant rectal varices by modified percutaneous transhepatic obliteration with sclerosant: Report of a case.

    abstract::We present a female patient with continuous melena, diagnosed with rectal variceal bleeding. She had a history of esophageal varices, which were treated with endoscopic therapy. Five years after the treatment of esophageal varices, continuous melena occurred. Since colonoscopy showed that the melena was caused by gian...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v12.i33.5408

    authors: Okazaki H,Higuchi K,Shiba M,Nakamura S,Wada T,Yamamori K,Machida A,Kadouchi K,Tamori A,Tominaga K,Watanabe T,Fujiwara Y,Nakamura K,Arakawa T

    更新日期:2006-09-07 00:00:00

  • Protective effect and mechanism of stronger neo-minophagen C against fulminant hepatic failure.

    abstract:AIM:To investigate the protective effect of stronger neo-minophafen C (SNMC) on fulminant hepatic failure (FHF) and its underlying mechanism. METHODS:A mouse model of FHF was established by intraperitoneal injection of galactosamine (D-Gal N) and lipopolysaccharide (LPS). The survival rate, liver function, inflammator...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v13.i3.462

    authors: Yang BS,Ma YJ,Wang Y,Chen LY,Bi MR,Yan BZ,Bai L,Zhou H,Wang FX

    更新日期:2007-01-21 00:00:00

  • Patient education improves adherence to peg-interferon and ribavirin in chronic genotype 2 or 3 hepatitis C virus infection: a prospective, real-life, observational study.

    abstract:AIM:To evaluate the impact of therapeutic education on adherence to antiviral treatment and sustained virological response (SVR) in a real-life setting in genotype 2/3 hepatitis C, as there are few adherence data in genotype 2/3 infection, even from randomized trials. METHODS:This prospective survey included genotype ...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章,多中心研究

    doi:10.3748/wjg.14.6195

    authors: Cacoub P,Ouzan D,Melin P,Lang JP,Rotily M,Fontanges T,Varastet M,Chousterman M,Marcellin P

    更新日期:2008-10-28 00:00:00

  • Is the required therapeutic effect always achieved by racemic switch of proton-pump inhibitors?

    abstract::Many of the drugs currently used in medical practice are racemates. The enantiomers of a racemic drug differ in pharmacodynamics and/or pharmacokinetics, thus in some cases it is preferable to develop pure enantiomers by racemic switch. In a recent study by Pai et al, dexrabeprazole [R(+)-rabeprazole] (10 mg) was foun...

    journal_title:World journal of gastroenterology

    pub_type: 评论,信件

    doi:10.3748/wjg.14.2617

    authors: Zhou Q,Yan XF,Pan WS,Zeng S

    更新日期:2008-04-28 00:00:00

  • NF-kappaB and ERK-signaling pathways contribute to the gene expression induced by cag PAI-positive-Helicobacter pylori infection.

    abstract:AIM:To elucidate the sequential gene expression profile in AGS cells co-cultured with wild-type Helicobacter pylori (H pylori) as a model of H pylori-infected gastric epithelium, and to further examine the contribution of cag-pathogenicity islands (cagPAI)-coding type IV secretion system and the two pathways, nuclear f...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v11.i39.6134

    authors: Shibata W,Hirata Y,Yoshida H,Otsuka M,Hoshida Y,Ogura K,Maeda S,Ohmae T,Yanai A,Mitsuno Y,Seki N,Kawabe T,Omata M

    更新日期:2005-10-21 00:00:00

  • Diabetic neuropathy: an evaluation of the use of quercetin in the cecum of rats.

    abstract:AIM:To investigate the effect of quercetin supplementation on the myenteric neurons and glia in the cecum of diabetic rats. METHODS:Total preparations of the muscular tunic were prepared from the ceca of twenty-four rats divided into the following groups: control (C), control supplemented with quercetin (200 mg/kg que...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v19.i38.6416

    authors: Ferreira PE,Lopes CR,Alves AM,Alves ÉP,Linden DR,Zanoni JN,Buttow NC

    更新日期:2013-10-14 00:00:00

  • Changes in lipid metabolism in chronic hepatitis C.

    abstract:AIM:To investigate the relationship between certain biochemical parameters of lipid metabolism in the serum and steatosis in the liver. METHODS:The grade of steatosis (0-3) and histological activity index (HAI, 0-18) in liver biopsy specimens were correlated with serum alanine aminotransferase (ALT), total cholesterol...

    journal_title:World journal of gastroenterology

    pub_type: 杂志文章

    doi:10.3748/wjg.v11.i41.6422

    authors: Jármay K,Karácsony G,Nagy A,Schaff Z

    更新日期:2005-11-07 00:00:00