Abstract:
BACKGROUND:Our previous studies have shown that regulatory factor X5 (RFX5), a classical transcription regulator of MHCII genes, was obviously overexpressed in hepatocellular carcinoma (HCC) tumors. However, the role of RFX5 in the carcinogenesis and progress of HCC remains unknown. This study aimed to reveal its biological significance and the underlying mechanism in HCC. METHODS:RFX5 mRNA expression level and copy number variation in HCC tumors and cell lines were determined by analyzing deposited data sets in the Cancer Genome Atlas and Gene Expression Omnibus database. The biological significance of RFX5 in HCC was investigated by monitoring the colony formation and subcutaneous tumor growth capacity when RFX5 was silenced with lentiviral short hairpin RNA and CRISPR/Cas9 system in HCC cell lines. The downstream gene transcriptionally activated by RFX5 in HCC cells was determined by chromatin immunoprecipitation and luciferase reporter assay. The involvement of tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein theta (YWHAQ) in HCC development was further determined by performing colony formation rescue assay and subcutaneous tumor growth rescue experiment. The association of YWHAQ with recurrence-free survival of patients with HCC was assessed by Kaplan-Meier analysis. Moreover, apoptosis level and the protein level of p53 pathway were determined to reveal the mechanism of RFX5 in driving HCC development. RESULTS:RFX5 was amplified and highly overexpressed in HCC tumor tissues compared with the corresponding non-tumor tissues. The mRNA expression level of RFX5 was significantly correlated with its DNA copy number (r = 0.4, P < 0.001). Functional study demonstrated that RFX5 was required for both clonogenic forming in vitro and subcutaneous tumor growth in vivo of HCC cells. Further study identified YWHAQ, namely 14-3-3 tau, as a key downstream transcriptional target gene of RFX5, which was tightly regulated by RFX5 in HCC. Moreover, overexpression of YWHAQ largely rescued the clonogenic growth of HCC cells that was suppressed by RFX5 knockdown. In addition, overexpression of YWHAQ in primary tumor was linked to poor prognosis of patients with HCC. These results demonstrated that YWHAQ was a downstream effector of RFX5 in HCC. Notably, RFX5-YWHAQ pathway could protect cells from apoptosis by suppressing the p53 and Bax in HCC. CONCLUSION:RFX5 is a putative HCC driver gene that plays an important role in the development and progression of HCC by transactivating YWHAQ and suppressing apoptosis.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Chen DB,Zhao YJ,Wang XY,Liao WJ,Chen P,Deng KJ,Cong X,Fei R,Wu X,Shao QX,Wei L,Xie XW,Chen HSdoi
10.1097/CM9.0000000000000296subject
Has Abstractpub_date
2019-07-05 00:00:00pages
1572-1581issue
13eissn
0366-6999issn
2542-5641journal_volume
132pub_type
杂志文章abstract:BACKGROUND:The safety and efficacy of drug-eluting stents (DES) implantation in unprotected left main (LM) bifurcation lesions has yet to be determined. The aim of the present report was to evaluate the long-term outcome following implantation of DES in unprotected LM bifurcation lesions. METHODS:We identified 70 cons...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2007-04-05 00:00:00
abstract:OBJECTIVE:To test the immunosuppressive effect of cyclosporine (Cs) in a polymer placed in the anterior chamber of corneal allograft recipients. METHODS:Wistar inbred rats with vascularized corneas were recipients of corneal allografts from Sprague-Dawley donor rats. Rats underwent penetrating keratoplasty and were di...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND:Under conventional cytogenetic (CC) analysis, only 30% - 50% of B cell chronic lymphocytic leukemia (B-CLL) cases show clonal aberrations. Using fluorescence in situ hybridization (FISH), the percentage of patients with abnormalities rises to almost 80%, among them, the most frequent abnormalities were 13q14...
journal_title:Chinese medical journal
pub_type: 杂志文章,多中心研究
doi:
更新日期:2011-08-01 00:00:00
abstract:BACKGROUND:Recent studies have suggested that cancer stem cells cause tumor recurrence based on their resistance to radiotherapy and chemotherapy. Although the highly invasive nature of glioblastoma cells is also implicated in the failure of current therapies, it is not clear whether cancer stem cells are involved in i...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-09-01 00:00:00
abstract::The imaging quality of the portal vein was obviously improved with prostaglandin E1 (PGE1) indirect portal vein digital subtraction angiography (DSA) in 23 cases. The time-density curve showed that the occurrence rate of opposite hepatic blood flow of splenic vein (SV) was the highest (17.4%). The total visualization ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1995-05-01 00:00:00
abstract:BACKGROUND:The prevalence of sudden sensorineural hearing loss in children (CSSNHL) is consistently increasing. However, the pathology and prognosis of CSSNHL are still poorly understood. This retrospective study evaluated clinical characteristics and possible associated factors of CSSNHL. METHODS:One hundred and thir...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.179791
更新日期:2016-04-20 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:Preoperative incisional local anaesthesia with ropivacaine is a common method of providing post-laparoscopy pain relief. The pulmonary recruitment manoeuvre also provides pain relief, but the combined effect of these two methods on pain following laparoscopic procedures has not been reported. We investigated...
journal_title:Chinese medical journal
pub_type: 杂志文章,随机对照试验
doi:
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Estrogen receptor (ER)-negative breast cancer cells are more aggressive than ER-positive cells. Elevated levels of cyclooxygenase-2 (COX-2) and vascular endothelial growth factor-C (VEGF-C) expression have been detected in cultured human breast cancer cells and are associated with negative hormone receptor s...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-08-05 00:00:00
abstract:BACKGROUND:Personalized medicine becomes essential in lung cancer treatment, however lung-cancer-related gene expression profiles in Chinese patients remain unknown. In this study, the correlation of gene expression profiles and clinical characteristics in non-small-cell lung cancer (NSCLC) was investigated. METHODS:S...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:The SYNergy between percutaneous coronary intervention with TAXus and cardiac surgery Score II (SS-II) can well predict 4-year mortality in patients with complex coronary artery disease (CAD), and guide decision-making between coronary artery bypass graft surgery and percutaneous coronary intervention (PCI)....
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.162510
更新日期:2015-08-20 00:00:00
abstract:BACKGROUND:It has been confirmed that defective expression of human leukocyte antigen class I (HLA-I) molecules can contribute to the immune evasion of cancer cells in some types of cancer. The aim of this study was to examine the expression of HLA class I antigen and the antigen-processing machinery (APM) components i...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-02-01 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:Phosphorous magnetic resonance spectroscopy ((31)P-MRS) has been successfully applied to study intracellular membrane compounds and high-energy phosphate metabolism. This study aimed to evaluate the capability of dynamic (31)P-MRS for assessing energy metabolism and mitochondrial function in skeletal muscle ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-01-01 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:Although the use of expanded-criteria donors (ECDs) alleviates the problem of organ shortage, it significantly increases the incidence of delayed graft function (DGF). DGF is a common complication after kidney transplantation; however, the effect of DGF on graft loss is uncertain based on the published liter...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.1097/CM9.0000000000000666
更新日期:2020-03-05 00:00:00
abstract:BACKGROUND:Imaging-guided thermal ablation using different energy sources continues to gain favor as a minimally invasive technique for the treatment of primary and metastatic hepatic malignant tumors. This study aimed to evaluate the performance of microwave ablation with 2450-MHz internally cooled-shaft antenna in ex...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-10-01 00:00:00
abstract:BACKGROUND:Borderline gastrointestinal stromal tumors (GISTs) are intermediate tumors between benign and malignant variants; however, the clinical and pathological features of borderline GISTs remain poorly defined. This study aimed to characterize GISTs and to identify a set of borderline criteria for practical use. ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVE:To compare the efficacy of transcranial Doppler ultrasound (TCD) and digital subtraction angiography (DSA) in identifying the clinical and hemodynamic relationship between intra- and extra-cranial circulation and subclavian steal syndrome. METHODS:Sixteen patients were collected. The intra- and extra-cranial...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1997-04-01 00:00:00
abstract:OBJECTIVE:To study the preventive effect of artemether (Art) in protecting the people from schistosome infection during flood fighting in schistosomiasis endemic area of Poyang Lake, Jiangxi Province. METHODS:From mid July to mid August in 1996, the water level in Poyang Lake rose due to torrential rains and 2 embankm...
journal_title:Chinese medical journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1998-02-01 00:00:00
abstract:OBJECTIVE:To assess the existence of a possible infectious factor in varicocele-related infertility. METHODS:A total of 925 seminal plasmas from 590 infertile men with varicocele and 335 infertile patients without palpable varicocele were cultured for Ureaplasma urealyticum infection, and routine semen analysis was ma...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1997-11-01 00:00:00
abstract:OBJECTIVE:To study 4 cases of adult T-cell leukemia/lymphoma (ATLL) associated with cutaneous lesions for clinicopathology, immunophenotype, human T-cell leukemia/lymphoma virus type I (HTLV-I) provirus DNA and their ultrastructure. At the same time, HTLV-I provirus DNA of ATLL patients were also compared with 18 cases...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1999-05-01 00:00:00
abstract:BACKGROUND:To study the characters of high-frequency oscillations (HFOs) in the seizure onset zones (SOZ) and the nonseizure onset zones (NSOZ) in the electrocorticography (ECoG) of patients with neocortical epilepsy. METHODS:Only patients with neocortical epilepsy who were seizure-free after surgery as determined wit...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.159342
更新日期:2015-07-05 00:00:00
abstract::Satisfactory results have been obtained in treating infective shock with injection of natural Fructus Aurantii immaturus (nat-FAI). The results of animal experiments and clinical observations on the anti-shock effects of the synthetic effective compositions of Fructus Aurantii immaturus (syn-FAI) are reported. The car...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1989-02-01 00:00:00
abstract::Dot-ELISA assay was compared with standard Sandwich ELISA in detecting parasite antigen in sera from patients with bancroftian filariasis. The same monoclonal antibody and the same serum samples were used in both assays. With Dot-ELISA, 67 of 70 serum samples from microfilaremic patients were positive at a dilution of...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1990-09-01 00:00:00
abstract::Myocardial revascularization by Nd: YAG laser used in rats with myocardial infarction was studied. The left coronary artery was ligated and the laser channels with a diameter of 300 microns were made immediately by 2.5-4.2 W lasersonics YAG unit. After 24 hours, the rats were killed. Evaluation included hemodynamics, ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1993-09-01 00:00:00
abstract:BACKGROUND:Among HIV-infected patients initiating antiretroviral therapy (ART), early changes in CD4+ T-cell subsets are well described. However, HIV-infected late presenters initiating treatment present with a suboptimal CD4+ T-cell reconstitution and remain at a higher risk for AIDS and non-AIDS events. Therefore, fa...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.193460
更新日期:2016-11-20 00:00:00
abstract:OBJECTIVE:To investigate the mechanism of multidrug resistance (MDR) in a human glioma cell and methods for overcoming multi-drug resistance. METHODS:MDR cell line C(6)/adr was established. The expression of the mdr-1 gene and its P-glycoprotein (P-gp) in the C(6)/adr cell line was observed by RT-PCR and flow cytometr...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.3901/jme.2002.supp.238
更新日期:2002-02-01 00:00:00
abstract:OBJECTIVE:To determine antiganglioside antibodies (AGA) in cerebrospinal fluid (CSF) of children with neuropsychiatric lupus erythematosus (NPLE), and to investigate their association with clinical manifestations and other laboratory tests. METHODS:An enzyme linked immunoabsorbent assay was used to detect AGA in 22 CS...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1997-08-01 00:00:00
abstract:BACKGROUND:Previous studies have demonstrated increased functions of osteoblasts on nanophase materials compared to conventional ceramics or composites. Nanophase materials are unique materials that simulate dimensions of constituent components of bone as they possess particle or grain sizes less than 100 nm. However, ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-01-01 00:00:00