Abstract:
BACKGROUND:This study was designed to obtain a recombinant retroviral vector containing the human hepatocellular carcinoma-related gene ANGPTL4 (angiopoietin-like 4) cDNA and to evaluate the anti-tumor effect of recombinant retroviral vector-mediated human ANGPTL4 gene transfection. METHODS:ANGPTL4 cDNA was cloned in vitro from normal human liver cells HL-7702 by using RT-PCR, and then subcloned into the plasmid vector pMSCV and sequenced. The retroviral plasmid vectors pMSCV-ANGPTL4, pVSV, and pGAG-POL were co-transfected into the packaging cell line 293 EBNA under mediation of lipofectamine. A high-titer retrovirus was obtained as a result, and HepG2 cells were infected with this retrovirus in vitro. Flow cytometry and fluorescence microscopy were used to detect expression of green fluorescence protein (GFP). The expression of ANGPTL4 mRNA in HepG2-ANGPTL4 cells was investigated using RT-PCR. The formation of tumors in nude mice and MTT assays were used to detect the growth of HepG2-ANGPTL4 cells in vivo and in vitro, respectively. RESULTS:The cDNA sequence of the cloned ANGPTL4 gene was consistent with the recently reported sequence. Thus, the recombinant retroviral vector pMSCV-ANGPTL4 was constructed successfully. The titer of the packaged recombinant retrovirus was 1.4 x 10(6) infective viral grains/ml, and the rate of HepG2-ANGPTL4 cells expressing GFP was 68.45%, with an average intensity of fluorescence 31.67 times greater in HepG2-ANGPTL4 cells than in HepG2 cells. The expression of ANGPTL4 mRNA in HepG2-ANGPTL4 cells was higher than in HepG2-pMSCV cells (154% higher) or HepG2 cells (161% higher). The proliferation rate of HepG2-ANGPTL4 cells in vitro was obviously lower than those of HepG2-pMSCV cells and HepG2 cells (P <0.01). The mean volume and weight of tumors seeded from HepG2-ANGPTL4 cells were obviously lower than the mean volume or weight of tumors seeded from HepG2 cells and HepG2-pMSCV cells (P <0.01). CONCLUSION:A stable ANGPTL4-transfected human liver cancer cell line HepG2-ANGPTL4 has been created. The transfer of the human ANGPTL4 gene mediated by a retroviral vector is a possibly effective approach for liver cancer therapy.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Li KQ,Li WL,Peng SY,Shi XY,Tang HL,Liu YBkeywords:
subject
Has Abstractpub_date
2004-09-01 00:00:00pages
1364-9issue
9eissn
0366-6999issn
2542-5641journal_volume
117pub_type
杂志文章abstract:OBJECTIVE:To explore the mechanism of cisplatin resistance and its reversion in human ovarian cancer. MATERIALS AND METHODS:A cisplatin resistant cell subline of SKOV3, SKOV3/cp, was established, and a xenograft mice model of human ovarian cancer was established by microencapsulation technology. Various biochemical ch...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1996-05-01 00:00:00
abstract:BACKGROUND:One of the reasons for poor neuroregeneration after central nervous system injury is the presence of inhibitory factors such as Nogo. Here, we tested the inhibition of Nogo by RNA interference both in vitro and in vivo, using recombinant adenovirus-mediated transfection of short hairpin RNAs, to explore a ne...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-11-01 00:00:00
abstract:BACKGROUND:Tenofovir disoproxil (TDF) is a promising salvage therapy for patients with chronic hepatitis B (CHB) who failed regimens of other nucleoside analogues (NAs). In this study, we aimed to investigate the clinical efficacy and safety of TDF monotherapy in Chinese CHB patients with genotypic resistance. METHODS...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.204107
更新日期:2017-04-20 00:00:00
abstract:BACKGROUND:The efficacy of pemetrexed in the second-line treatment of Chinese patients with advanced non-small cell lung cancer (NSCLC) has been shown to be similar to that of docetaxel in a recent study; additionally, pemetrexed was associated with much better safety and toxicity profiles. Here, the survival without c...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2013-01-01 00:00:00
abstract::Eight strains of sonicated Helicobacter pylori (H. pylori) were pooled as group antigen to detect the serum IgG antibody to H. pylori in patients with various gastroduodenal diseases and subjects at health check-up. The enzyme-linked immunosorbent assay method used had a sensitivity of 94%, a specificity of 87%, and a...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1991-11-01 00:00:00
abstract:BACKGROUND:Pleomorphic hyalinizing angiectatic tumor (PHAT) of soft parts is a rare soft tissue tumor, which is generally considered low-grade. To distinguish the tumor from other soft tissue lesions, we analyzed the clinicopathologic and ultrastructural features, immunophenotypes, and flow cytometric DNA ploidy of PHA...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2007-05-20 00:00:00
abstract:BACKGROUND:The reverse obliquity inter-trochanteric fracture is a distinct fracture pattern that is mechanically different from most inter-trochanteric fractures and the optional treatment of it is still controversial. The purpose of this study was to compare differences in the efficacy of a novel nail (medial support ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.1097/CM9.0000000000001031
更新日期:2020-11-20 00:00:00
abstract:BACKGROUND:Using magnetic resonance imaging, diagnosis of malignant meningioma from benign meningioma with atypical features is uncertain. We evaluated the value of lipid signal in differentiating intracranial meningiomas. METHODS:1H-magnetic resonance spectroscopy (MRS) using a point resolved spectroscopy (TR/TE 1000...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2008-12-05 00:00:00
abstract:BACKGROUND:Bone grafting is commonly used to repair bone defects. As the porosity of the graft scaffold increases, bone formation increases, but the strength decreases. Early attempts to engineer materials were not able to resolve this problem. In recent years, nanomaterials have demonstrated the unique ability to impr...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Chronic liver diseases are a major burden in China. Alanine aminotransferase (ALT) can be used as an indicator of hepatocyte damage. In this study, we determined the prevalence and etiologies of elevated ALT in an adult population in Jilin, China. METHODS:A total of 4072 individuals aged between 18 and 79 y...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:Benign prostate hyperplasia is one of the most common diseases affecting the health of the aging males. Watchful waiting is an acceptable management strategy for benign prostate hyperplasia in which the patient is monitored by the physician but receives no active intervention. The epidemiological data on thi...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2006-12-20 00:00:00
abstract:OBJECTIVE:To study the experience in the treatment of subclavian steal syndrome (SSS) and the relation between SSS and the damage of brain. METHODS:In 28 patients with SSS, 23 were operated on. They complained of vertigo, TIA, and claudication of arms. One patient suffered from severe stem ischemia spasm. All the pati...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1999-11-01 00:00:00
abstract:BACKGROUND:Clinical practice guidelines (CPGs) play an important role in healthcare in China as well as in the world. However, the current status and trends of Chinese CPGs are unknown. The aim of this study was to systematically review the present situation and the quality of Chinese CPGs published in the peer-reviewe...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:Postoperative preablative stimulated thyroglobulin (ps-Tg) has been evaluated in predicting prognosis and success of ablation regarding differentiated thyroid cancer (DTC); however, its relationship with recurrence risk and radioiodine decision-making remains uncertain, especially in Chinese DTC patients. We...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.155086
更新日期:2015-04-20 00:00:00
abstract:BACKGROUND:The coordinated change of haematopoietic supporting microenvironment in bone marrow (BM) is crucial for innate immunity and inflammation. As the precursors of marrow stroma, BM derived mesenchymal stem cells (MSCs) promote haematopoietic function, but their roles in innate immunity or inflammation have not b...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2007-10-05 00:00:00
abstract:BACKGROUND:This prospective, randomized, controlled study was designed to investigate the effects of a diabetes specific formula (Diason low energy: 313.8 kJ/100 ml), compared with a standard formula, on insulin sensitivity, serum C peptide, serum lipids and free fatty acid (FFA) in type 2 diabetics. METHODS:In total ...
journal_title:Chinese medical journal
pub_type: 杂志文章,随机对照试验
doi:
更新日期:2008-04-20 00:00:00
abstract:BACKGROUND:Neutrophil/lymphocyte ratio (NLR) has been proposed as a novel marker of systemic inflammation and oxidative stress. The objective of this study was to ascertain the relationship between levels of NLR and recurrence of lone atrial fibrillation (AF) after catheter ablation. METHODS:A total of 379 lone AF pat...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Chronic hepatic inflammation is characterized by the accumulation of lymphocytes as a consequence of increased recruitment from the blood and retention within the tissue at sites of infection. CXC chemokine ligand 16 (CXCL16) mRNA has been detected in both inflamed and normal liver tissues and is strongly up...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-03-01 00:00:00
abstract:BACKGROUND:Generalized glucocorticoid resistance syndrome is a rare familial or sporadic condition characterized by generalized, partial, target-tissue insensitivity to glucocorticoids. This syndrome is partially caused by mutations in the human glucocorticoid receptor (hGR) gene. The clinical spectrum of generalized g...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-02-01 00:00:00
abstract:BACKGROUND:There are no conclusive studies evaluating the interaction between icariin and exercise for treatment of osteoporosis; the efficacy and safety of this treatment combination remains to be evaluated. The purpose of this study was to investigate the effects of icariin treatment combined with exercise therapy on...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-05-01 00:00:00
abstract:BACKGROUND:The usual transbronchial coagulation techniques include microwave, argon plasma coagulation (APC), electrocautery and cryotherapy. However, there are serious clinical problems in the safety of each. By analyzing the experimental data and clinical observations, we observed the variable effects of different co...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2013-01-01 00:00:00
abstract:OBJECTIVES:To study mitogen-activated protein kinase (MAPKs) activation in fibroblast-like synoviocytes (FLS) of rheumatoid arthritis (RA) under the stimulation of IL-1 beta, and to elucidate the role of protein tyrosine kinase (PTK) in the activation of MAPKs. METHODS:Primary cultures of RA FLS were used. Western blo...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2000-10-01 00:00:00
abstract::A study was made in Neijiang City, Sichuan Province to observe the safety and immunogenicity of a live attenuated hepatitis A virus (HAV) vaccine (H2 strain). 3,031 children, aged 6 to 9 years, were injected subcutaneously with 10(6.0) TCID50, 10(5.5) TCID50, and 10(5.0) TCID50 of HAV vaccine; the seroconversion rate ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1993-08-01 00:00:00
abstract:BACKGROUND:To date, there have been no reports on altered nitric oxide (NO) content in ischemia/reperfusion with regard to in vivo preconditioning procedures. These studies are important for understanding the mechanisms of NO during early myocardial ischemic preconditioning. The aim of the present study was to investig...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2008-07-05 00:00:00
abstract::The saliva samples from 13 patients with hepatocellular carcinoma and a control group of 21 random healthy adults were measured for alpha-fetoprotein (AFP), using a highly sensitive sandwich enzyme immunoassay specific for human AFP. In patients with hepatocellular carcinoma, significantly higher levels of saliva AFP ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1993-03-01 00:00:00
abstract:BACKGROUND:Angiopoietin-2 (Ang-2) is one of the critical regulators of tumor angiogenesis. Studies have shown a significant correlation of Ang-2 expression to tumor invasion and metastasis in various human cancers, but little is known about the serum Ang-2 (sAng-2) levels in esophageal squamous cell cancer (ESCC) and i...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2007-07-20 00:00:00
abstract:OBJECTIVE:To investigate the effects of red orpiment on cell morphology, expression of promyelocytic leukemia (PML) mRNA and its protein localization in NB4 and HL-60 cell lines. METHODS:Cell morphology was assayed by Wright's staining and fluorescence staining, while PML mRNA expression was determined by RT-PCR. PML ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:The fluorosis derived from coal burning is a very serious problem in China. By using fluorine-fixing technology during coal burning we are able to reduce the release of fluorides in coal at the source in order to reduce pollution to the surrounding environment by coal burning pollutants as well as decrease t...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-02-05 00:00:00
abstract:OBJECTIVE:To determine whether mutation of the coding or junction region of glucokinase gene (GCK) is also the pathogenic cause of the common form of non-insulin-dependent diabetes mellitus (NIDDM) in Chinese. METHODS:Single strand conformation polymorphism (SSCP) analysis was performed after the 12 exons and junction...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1996-11-01 00:00:00
abstract:BACKGROUND:Lumbar spinal stenosis is a common problem that is receiving attention with the advent of novel treatment procedures. Prior positional MRI studies demonstrated lumbar canal diameter changes with flexion and extension. There have not been any studies to examine the amount of spinal canal diameter change relat...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-06-01 00:00:00