Abstract:
AIMS:Cyclooxygenase-2 (COX-2)-controlled production of prostaglandin E(2) (PGE(2)) has been implicated in cell growth and metastasis in many cancers. Recent studies have found that COX-2 is co-expressed with survivin in many cancers. Survivin is a member of the inhibitor-of-apoptosis protein family. Some COX-2 inhibitors (e.g., celecoxib) can reduce the expression of survivin. However, little is known about the mechanism of PGE(2)-mediated expression of survivin. This study was designed to uncover the effect of PGE(2) on survivin expression in hepatocellular carcinoma cells. MAIN METHODS:The effects of PGE(2) and EP1 agonist on survivin expression were examined in HUH-7 and HepG2 cells. Plasmid transfection and EP1 siRNA were used to regulate the expression of COX-2 and the EP1 receptor protein. KEY FINDINGS:PGE(2) treatment increased survivin expression 2.3-fold. COX-2 overexpression resulted in a similar level of survivin upregulation. However, this effect was suppressed by treatment with celecoxib. EP1 receptor transfection or treatment with a selective EP1 agonist mimicked the effect of PGE(2) treatment. Conversely, the PGE(2)-induced upregulation of survivin was blocked by treatment with a selective EP1 antagonist or siRNA against the EP1 receptor. The phosphorylation of EGFR and Akt were elevated in EP1 agonist-treated cells, and both EGFR and PI3K inhibitors suppressed the upregulation of survivin induced by PGE(2) or EP1 agonist. SIGNIFICANCE:PGE(2) regulates survivin expression in hepatocellular carcinoma cells through the EP1 receptor by activating the EGFR/PI3K pathway. Targeting the PGE(2)/EP1/survivin signaling pathway may aid the development of new therapeutic strategies for both the prevention and treatment of this cancer.
journal_name
Life Scijournal_title
Life sciencesauthors
Bai XM,Jiang H,Ding JX,Peng T,Ma J,Wang YH,Zhang L,Zhang H,Leng Jdoi
10.1016/j.lfs.2009.12.009subject
Has Abstractpub_date
2010-01-30 00:00:00pages
214-23issue
5-6eissn
0024-3205issn
1879-0631pii
S0024-3205(09)00509-8journal_volume
86pub_type
杂志文章相关文献
LIFE SCIENCES文献大全abstract::High salt intake is involved in the genesis of hypertension and vascular changes in salt-sensitive patients. Although many mechanisms have been proposed, the underlying mechanisms of these alterations in healthy rats are not completely elucidated. The aim of this study was to investigate if male Wistar rats fed a high...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2005.09.028
更新日期:2006-04-04 00:00:00
abstract::The reinforcing effects of cocaine and methylphenidate have been linked to their ability to block dopamine transporters (DAT). Though cocaine and methylphenidate have similar in vitro affinities for DAT the abuse of methylphenidate in humans is substantially lower than of cocaine. To test if differences in in vivo pot...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(99)00225-8
更新日期:1999-01-01 00:00:00
abstract:AIM:Pancreatic stellate cells (PSCs) are the main functional cells leading to pancreatic fibrosis. Nicotine is widely considered as an independent risk factor of pancreatic fibrosis, but the mechanism is still unclear. Our study was aimed to explore the effects of nicotine on human pancreatic stellate cells (hPSCs) and...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.117301
更新日期:2020-02-15 00:00:00
abstract::In the present study the effects of Granulocyte-Macrophage Colony Stimulating Factor (GM-CSF) on fibroblast growth and activity have been studied. In this regard the AA have evaluated in primary cultures of human gengival normal fibroblasts (PG1 cells): a)-the expression of GM-CSF receptor (GM-CSFR) (alfa unit) on the...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(98)00281-1
更新日期:1998-01-01 00:00:00
abstract::Heat shock protein 70 (Hsp70) is capable of protecting cells, tissues, organs, and animals from a subsequent, normally lethal heating, as well as from numerous disease states. Therefore, it would be of great therapeutic benefit to discover compounds that are clinically safe yet able to induce Hsp70 in patients. Carben...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(01)01362-5
更新日期:2001-11-02 00:00:00
abstract::The influence of stressful experiences on the development of vacuous chewing movements (VCM) was investigated in non-medicated rats. After an initial baseline period one group of rats was housed in a noisy environment while another group was housed in quiet surroundings. The development of VCM was recorded during a 16...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(91)90146-3
更新日期:1991-01-01 00:00:00
abstract::Tobacco smoke (TS) is a potent source of oxidants and oxidative stress is an important mechanism by which TS exerts its toxicity in the lung. We have shown that TS induces heat shock (HS)/stress protein (HSP) synthesis in human monocytes. Pulmonary surfactant (PS) whose major physiological function is to confer mechan...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(98)00542-6
更新日期:1999-01-01 00:00:00
abstract::Protein binding determination in post heparin plasma samples is complicated by the continued post heparin lipase activity, in vitro, during the binding analysis. The decomposition of lipoproteins and accumulation of nonesterified fatty acids (NEFA) results in artifically elevated free fractions of many drugs. This art...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(83)90847-0
更新日期:1983-10-10 00:00:00
abstract:BACKGROUND:The emergence of SARS-CoV-2 pandemic has upset health systems around the world and caused immeasurable losses and costs. Until a vaccine will become available, the recommended prevention measures remain physical distancing and enhanced hygiene. METHODS AND FINDINGS:The proteic structure external to the viru...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.118801
更新日期:2021-01-15 00:00:00
abstract::Dehydroepiandrosterone (DHEA), an adrenal steroid of no known biological function, is a potent inhibitor of mammalian glucose-6-phosphate dehydrogenase (G6PDH). DHEA inhibited the growth of two stains of HeLa and WI-38 cells in culture. One of the HeLa strains, TCRC-2, was about 10x as sensitive to growth inhibition a...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(86)90557-6
更新日期:1986-04-21 00:00:00
abstract::We examined a hypothesis that alpha-Melanocyte Stimulating Hormone (MSH) can antagonizes the anorexia induced by intracerebroventricular injection of corticotropin releasing factor (CRF). Food intake of the rats deprived of food for 18 h was significantly inhibited by 4 h after intracerebroventricular injection of CRF...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(93)90620-i
更新日期:1993-01-01 00:00:00
abstract::Active Hexose Correlated Compound (AHCC), an extract derived from fungi of Basidiomycetes family has been shown to act as a biological response modifier in various disorders. In our present study, ferric nitrilotriacetate (Fe-NTA), which generates hydroxyl radicals in vivo, was given intraperitoneally to rats and AHCC...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2003.06.038
更新日期:2003-12-19 00:00:00
abstract:AIMS:Various investigations have demonstrated the protective capacity of general anesthetics as neuroprotective agents. The effects of propofol against ischemia are known to reside in its antioxidant properties and its GABAergic activity. Other aromatic alcohols have also been reported as able to protect neurons agains...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2017.03.005
更新日期:2017-04-15 00:00:00
abstract:AIMS:Pulmonary hypertension (PH) is a proliferative disorder characterized by enhanced proliferation and suppressed apoptosis of intrapulmonary vascular smooth muscle cells. Recently, network-based bioinformatics have identified let-7 family, a tumor suppressive microRNA, regulate multiple interacting targets relevant ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2016.11.020
更新日期:2017-02-01 00:00:00
abstract::This work was designed to study neurogenic, atropine resistant contractions of the cat urinary bladder. Urinary bladder contractions were induced by pelvic nerve stimulation (PNS) and the administration of acetylcholine (Ach) and purine compounds. The results show that atropine (2 mg/kg) depresses the maintained porti...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(83)90374-0
更新日期:1983-05-23 00:00:00
abstract::Since the late 1960's, radioenzymatic assays have gradually come to replace the less sensitive and less specific spectrofluorometric and bioassay procedures previously used to determine many of the neurotransmitters. These assays provide the means to measure picogram quantities of most of these substances, and have en...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(87)90185-8
更新日期:1987-08-17 00:00:00
abstract::Despite the recent scientific advances made in cancer diagnostics and therapeutics, cancer still remains the second leading cause of death worldwide. Thus, there is a need to identify new potential biomarkers/molecular targets to improve the diagnosis and treatment of cancer patients. In this regard, long non-coding R...
journal_title:Life sciences
pub_type: 杂志文章,评审
doi:10.1016/j.lfs.2020.118035
更新日期:2020-09-15 00:00:00
abstract:AIMS:It has been shown that exposure to extremely-low frequency (˂300Hz) oscillating electromagnetic field (EMF) can affect gene expression. The effects of different exposure patterns of 50-Hz EMF and co-treatment of EMF plus cisplatin (CDDP) on mRNA levels of seven genes involved in DNA repair pathways (GADD45A, XRCC1...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2016.10.006
更新日期:2016-12-01 00:00:00
abstract::We analyzed PGE2 production in primary-cultured human hepatic macrophages (HHM phi) and peripheral monocytes (MO) from patients with and without liver cirrhosis, and correlated PGE2 production with the patients' liver function. Serum choline esterase (ChE) levels were used as an indicator of liver function. PGE2 produ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(93)90751-n
更新日期:1993-01-01 00:00:00
abstract::Extracts of Chan Su, a traditional Chinese medication used as a topical anesthetic and cardiac medication, were incubated with cardiomyocytes that had been loaded with a calcium specific fluorescent probe. Calcium transients were measured by real-time fluorescence spectrophotometry following treatment. The transients ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(02)02302-0
更新日期:2002-12-27 00:00:00
abstract::Nowadays, endocrine disrupting chemical pollution has become one of the major concerns due to the potential role of these chemicals in provoking endocrine disorders especially type 2 diabetes. As a widespread endocrine disrupting chemical, Bisphenol A, with modest estrogenic activity can exert its detrimental effects ...
journal_title:Life sciences
pub_type: 杂志文章,评审
doi:10.1016/j.lfs.2018.10.044
更新日期:2018-12-01 00:00:00
abstract::In the early 1970's, some papers appeared reporting an immune response to opiates in animals treated with morphine and in heroin addicts, but further researches failed to confirm these results in humans. The aim of the present work is investigating with a newly developed enzyme immunoassay the existence of specific an...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(93)90656-n
更新日期:1993-01-01 00:00:00
abstract::Nitric oxide is involved in a countless number of physiological processes and is known to have cytoprotective as well as cytotoxic effects. Increased knowledge about the multifaceted role of nitric oxide in a variety of disease states has led to the design of multiple treatment strategies involving the nitric oxide sy...
journal_title:Life sciences
pub_type: 杂志文章,评审
doi:10.1016/j.lfs.2003.08.029
更新日期:2004-02-20 00:00:00
abstract::Alpha(1)-adrenergic receptors are one of the three subfamilies of G protein coupled receptors activated by epinephrine and norepinephrine to control important functions in many target organs. Three human subtypes (alpha(1A), alpha(1B), alpha(1D)) are derived from separate genes and are highly homologous in their trans...
journal_title:Life sciences
pub_type: 杂志文章,评审
doi:10.1016/j.lfs.2003.07.008
更新日期:2003-12-12 00:00:00
abstract::This study analyzed the relationship between infection by human T-cell lymphotropic virus type 1 (HTLV-1) and changes in the pulmonary system. Cohort and case-control study models that analyzed a causal association between HTLV-1 and changes in the pulmonary system were considered. There were no restrictions on langua...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.117979
更新日期:2020-09-01 00:00:00
abstract::Amniotic fluid and placenta contain a substance (POEF, for Placental Opioid-Enhancing Factor) that, when ingested, enhances opioid-mediated analgesia in nonpregnant rats; ingestion of the substance by rats not experiencing opioid-mediated analgesia, however, does not produce analgesia. It is highly likely that peripar...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(90)90074-2
更新日期:1990-01-01 00:00:00
abstract::Resveratrol is an antioxidant present in grapes and their related products. We investigated whether dietary resveratrol could inhibit the proliferation and metastasis of tumors and hyperlipidemia in Donryu rats subcutaneously implanted with an ascites hepatoma cell line of AH109A. By feeding 10 or 50 ppm resveratrol i...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(03)00469-7
更新日期:2003-08-01 00:00:00
abstract::A highly purified rat urinary bladder smooth muscle cell culture was obtained by a modified enzymic isolation method, and the presence of functional muscarinic as well as beta-adrenergic receptors were subsequently determined. At 7-10 days of culture, cells became elongated and spindle-shaped showing a typical "hills ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(01)01488-6
更新日期:2002-01-25 00:00:00
abstract:AIMS:Porcelain-fused-to-metal (PFM) crowns are a standard restoration technique in dentistry, but toxicity of PFM in vivo has not been systematically evaluated. The present study evaluated the effects of various metal alloy shells of PFM crowns on the development of zebrafish embryos and larvae in order to determine th...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2018.04.019
更新日期:2018-06-15 00:00:00
abstract::This experiment was designed to assess the role of the septo-hippocampal cholinergic (ACh) system in the deleterious effects produced by systemic benzodiazepine injection on learning processes in rats. Retention of a step through passive avoidance task was analysed after systemic injection of increasing doses of eithe...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(99)00092-2
更新日期:1999-01-01 00:00:00