Abstract:
AIM:To develop a highly efficacious method for preparation of soluble SARS S-protein using adenovirus vector to meet the requirement for S-protein investigation. METHODS:The human adenovirus vector was used to express the soluble S-protein (corresponding to 1 approximately 1190 amino acids) fused with Myc/His tag using codon-optimized gene construct in HEK239 cells. The recombinant adenovirus bearing S-protein gene was generated by ligation method. The expressed S-protein with Myc/His tag was purified from culture medium with Ni-NTA agarose beads followed by dialysis. The S-protein was detected by Western blot and its biologic activity was analyzed by binding to Vero cells. RESULTS:Under the conditions of infection dose (MOI of 50) and expression time (48 h), the high-level expression of S-protein was obtained. The expression level was determined to be approximately 75 microg/10(6) cells after purification. Purified soluble S-protein was readily detected by Western blot with anti-Myc antibody and showed the ability to bind to surface of Vero cells,demonstrating that the soluble S-protein could remain the biologic activity in the native molecule. CONCLUSION:The high-level expression of S-protein in HEK293 cells mediated by adenovirus can be achieved under the optimized expression conditions. The proteins possess the biologic activity, which lays a foundation for further investigation of S-protein biological function.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Zhong F,Zhong ZY,Liang S,Li XJdoi
10.3748/wjg.v12.i9.1452keywords:
subject
Has Abstractpub_date
2006-03-07 00:00:00pages
1452-7issue
9eissn
1007-9327issn
2219-2840journal_volume
12pub_type
杂志文章abstract::A clinical trial of radiotherapy with modified simultaneous integrated boost (SIB) technique against huge tumors was conducted. A 58-year-old male patient who had a huge pelvic tumor diagnosed as a rectal adenocarcinoma due to familial adenomatous polyposis was enrolled in this trial. The total dose of 77 Gy (equivale...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v20.i48.18480
更新日期:2014-12-28 00:00:00
abstract::A 66-year-old woman underwent partial splenic embolization (PSE) for hypersplenism with idiopathic portal hypertension (IPH). One week later, contrast-enhanced CT revealed extensive portal vein thrombosis (PVT) and dilated portosystemic shunts. The PVT was not dissolved by the intravenous administration of urokinase. ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i31.5071
更新日期:2006-08-21 00:00:00
abstract::Management of hepatocellular carcinoma (HCC) with portal vein thrombosis (PVT) is complex and requires an understanding of multiple therapeutic options. PVT is present in 10%-40% of HCC at the time of diagnosis, and is an adverse prognostic factor. Management options are limited, as transplantation is generally contra...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v21.i12.3462
更新日期:2015-03-28 00:00:00
abstract:AIM:To study the effect of progesterone on contractile activity of isolated gastric strips in rats. METHODS:Wistar rats were sacrificed to remove whole stomach. Then, the stomach was opened and the mucosal layer was removed. Parallel to either the circular or the longitudinal fibers, muscle strips were cut from fundus...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v9.i4.775
更新日期:2003-04-01 00:00:00
abstract:AIM:To study the characteristics of upper digestive tract diseases (UDTDs) in fishermen who live in Bohai Bay. METHODS:An investigation was carried out in 1488 fishermen with symptoms of UDTDs (aside from liver, biliary and pancreatic diseases) during the time period between December 1991 and February 1995. This inves...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v3.i3.171
更新日期:1997-09-15 00:00:00
abstract:AIM:To investigate whether mesenchymal stem cells (MSCs) from adipose-derived stromal cells (ADSCs) and bone marrow stromal cells (BMSCs) have similar hepatic differentiation potential. METHODS:Mouse ADSCs and BMSCs were isolated and cultured. Their morphological and phenotypic characteristics, as well as their multip...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v23.i38.6973
更新日期:2017-10-14 00:00:00
abstract::Perivascular epithelioid cell tumour is not uncommon in the liver but seldom malignant. ...
journal_title:World journal of gastroenterology
pub_type: 评论,信件
doi:10.3748/wjg.14.3105
更新日期:2008-05-21 00:00:00
abstract::Idiopathic achalasia is a rare primary motility disorder of the esophagus. The classical features are incomplete relaxation of a frequently hypertensive lower esophageal sphincter (LES) and a lack of peristalsis in the tubular esophagus. These motor abnormalities lead to dysphagia, stasis, regurgitation, weight loss, ...
journal_title:World journal of gastroenterology
pub_type: 社论
doi:10.3748/wjg.15.3969
更新日期:2009-08-28 00:00:00
abstract:AIM:To investigate the effect of fermented soy milk on human ecosystem in the intestinal tract by way of examining the population of different microorganisms isolated from fecal samples. METHODS:A crossover experimental design was applied. Twenty-eight healthy adults completed this experiment. Each subject consumed 25...
journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2005-02-28 00:00:00
abstract:AIM:To investigate the diagnostic accuracy of acoustic radiation force impulse (ARFI) imaging as a noninvasive method for the assessment of liver fibrosis in chronic hepatitis C (CHC) patients. METHODS:We performed a prospective blind comparison of ARFI elastography, APRI index and FibroMax in a consecutive series of ...
journal_title:World journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.3748/wjg.15.5525
更新日期:2009-11-28 00:00:00
abstract::Alcoholic liver disease (ALD) is characterized by steatosis or fat deposition in the liver and inflammation, which leads to cirrhosis and hepatocellular carcinoma. Induction of target genes without involving changes in DNA sequence seems to contribute greatly to liver injury. Chromatin modifications including alterati...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v17.i20.2456
更新日期:2011-05-28 00:00:00
abstract:AIM:To investigate the effects of short-term application of low-dose growth hormone on trace element metabolism and blood glucose in surgical patients. METHODS:A total of 48 consecutive patients undergoing abdominal operations were randomized to receive either subcutaneous rhGH (0.15 IU/kg) or placebo (menstruum) inje...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,随机对照试验
doi:10.3748/wjg.v13.i46.6259
更新日期:2007-12-14 00:00:00
abstract:AIM:To investigate the effects of KAI1/CD82 on biological behavior of colorectal carcinoma cells. METHODS:KAI1 cDNA was transfected into highly malignant colorectal carcinoma cell line, LoVo, which had low level of endogenous KAI1 expression, and established stable transfectant clones with high KAI1/CD82 expression. T...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v9.i6.1231
更新日期:2003-06-01 00:00:00
abstract:AIM:To investigate the relationship between pathological oropharyngeal (OP) acid exposure and esophageal motility in patients with extra-esophageal syndromes. METHODS:In this prospective study we enrolled consecutive outpatients with extra-esophageal symptoms suspected to be related to gastroesophageal reflux disease ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v22.i40.8991
更新日期:2016-10-28 00:00:00
abstract:AIM:To investigate the ultrastructure of abnormal hepatocyte mitochondria, including their cellular and hepatic zonal distribution, in bioptates in pediatric non-alcoholic steatohepatitis (NASH). METHODS:Ultrastructural investigations were conducted on biopsy liver specimens obtained from 10 children (6 boys and 4 gir...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v20.i15.4335
更新日期:2014-04-21 00:00:00
abstract:AIM:To test the hypothesis that enhancement of the activity of heme oxygenase can interfere with processes of fibrogenesis associated with recurrent liver injury, we investigated the therapeutic potential of over-expression of heme oxygense-1 in a CCl(4)-induced micronodular cirrhosis model. METHODS:Recombinant adeno-...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i13.2016
更新日期:2006-04-07 00:00:00
abstract::The intestinal microbiome is a dynamic system of interactions between the host and its microbes. Under physiological conditions, a fine balance and mutually beneficial relationship is present. Disruption of this balance is a hallmark of inflammatory bowel disease (IBD). Whether an altered microbiome is the consequence...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v21.i40.11321
更新日期:2015-10-28 00:00:00
abstract::Globally, over 300 million people are living with viral hepatitis with approximately 1.3 million deaths per year. In 2016, World Health Assembly adopted the Global Health Sector Strategy on viral hepatitis to eliminate hepatitis by 2030. Different World Health Organization member countries are working on hepatitis con...
journal_title:World journal of gastroenterology
pub_type: 社论
doi:10.3748/wjg.v24.i44.4959
更新日期:2018-11-28 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 evaluate whether contrast enhanced ultrasound (CEUS) might also be used for response prediction and early response evaluation in patients receiving bevacizumab based chemotherapy for metastasized colorectal cancer. METHODS:Thirty consecutive patients with non primary resectable liver metastases from colorectal ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v18.i6.541
更新日期:2012-02-14 00:00:00
abstract::Gastroduodenal disease (GDD) was initially thought to be uncommon in Africa. Amongst others, lack of access to optimal health infrastructure and suspicion of conventional medicine resulted in the reported prevalence of GDD being significantly lower than that in other areas of the world. Following the increasing availa...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v25.i26.3344
更新日期:2019-07-14 00:00:00
abstract::Clostridium difficile (CD), specifically its toxins, have been implicated as a risk factor for exacerbation of the inflammatory process in up to 5% of patients with ulcerative colitis or Crohnos disease. Typical evidence of colonic changes with CD infection, including pseudomembranous exudate, are often not present; h...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.14.2794
更新日期:2008-05-14 00:00:00
abstract:AIM:To sum up the clinical characteristics of patients with central pontine myelinolysis (CPM) after orthotopic liver transplantation (OLT) and to document the possible causes of CPM. METHODS:Data of 142 patients undergoing OLT between January 1999 to May 2003 were analyzed retrospectively. Following risk factors duri...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v10.i17.2540
更新日期:2004-09-01 00:00:00
abstract:AIM:To analyze the role of rs12979860 and rs8099917 polymorphisms in hepatitis C virus (HCV) genotype 1 infection of Brazilians. METHODS:A total of 145 adult patients diagnosed with genotype 1 chronic hepatitis C (CHC) who had completed a 48-wk regimen of pegylated-interferon α-2a or -2b plus ribavirin combination the...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,多中心研究
doi:10.3748/wjg.v19.i42.7399
更新日期:2013-11-14 00:00:00
abstract:BACKGROUND:Lifestyle factors such as body mass index (BMI), alcohol drinking, and cigarette smoking, are likely to impact the prognosis of gastric cancer, but the evidence has been inconsistent. AIM:To investigate the association of lifestyle factors and long-term prognosis of gastric cancer patients in the China Nati...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v26.i14.1613
更新日期:2020-04-14 00:00:00
abstract:AIM:To study the condition and potentiality of human umbilical cord blood stem cells (HUCBSC) to differentiate into hepatocytes in vivo or in vitro. METHODS:In a cell culture study of human umbilical cord blood stem cell (HUCBSC) differentiation, human umbilical cord blood mononuclear cells (HUCBMNC) were separated by...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v12.i25.4014
更新日期:2006-07-07 00:00:00
abstract::Vanishing bile duct syndrome (VBDS) has been described in different pathologic conditions including infection, ischemia, adverse drug reactions, autoimmune diseases, allograft rejection, and humoral factors associated with malignancy. It is an acquired condition characterized by progressive destruction and loss of the...
journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
doi:10.3748/wjg.v23.i2.366
更新日期:2017-01-14 00:00:00
abstract::We report a rare case of a 68-year-old male with metachronous pancreatic metastasis that was resected 2 years after salvage esophagectomy for local recurrence of esophageal squamous cell carcinoma (ESCC). Two years and 8 mo ago, he had undergone definitive chemoradiotherapy for the lower thoracic ESCC and achieved a c...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v20.i2.593
更新日期:2014-01-14 00:00:00
abstract:AIM:To investigate the possible clinical application value of second harmonic imaging under low acoustic pressure. METHODS:Six New Zealand rabbits, averaging 2.7+/-0.4 kg, were selected and operated upon to construct hepatic VX2 tumor carrier model. Hepatic VX2 tumors were imaged with B mode Ultrasonography (US), and ...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v9.i8.1679
更新日期:2003-08-01 00:00:00
abstract:AIM:To evaluate the potential role of Nimesulide, a selective COX-2 inhibitor, in proliferation and apoptosis of gastric adenocarcinoma cells SGC7901. METHODS:Cell counts and MTT assay were used to quantify the influence of Nimesulide in the proliferation of SGC7901 cells. Transmission electron microscopy and flow cyt...
journal_title:World journal of gastroenterology
pub_type: 杂志文章
doi:10.3748/wjg.v9.i5.915
更新日期:2003-05-01 00:00:00