Abstract:
:Myeloid cell leukemia-1 (Mcl-1) plays an important role in survival, chemo- and radioresistance of head and neck squamous cell carcinoma (HNSCC). Cyclin-dependent kinase 9/cyclin T (CDK9) promotes excessive production of multiple pro-survival proteins including Mcl-1, leading to impaired apoptosis of cancer cells. As such, CDK9 is an emerging therapeutic target in cancer therapy. We herein report the first study of targeting CDK9 as a treatment strategy for hypopharyngeal squamous cell carcinoma (HSCC), an aggressive malignancy associated with one of the worst prognoses within HNSCC. We showed that mRNA levels of Mcl-1 were significantly higher in HSCC tumor tissues than in the adjacent non-tumor mucosae. In addition, the levels of Mcl-1 mRNA correlated with the tumor size and clinical stage of HSCC patients. CDKI-73, a potent CDK9 inhibitor, was capable of downregulating the expression of Mcl-1 in the HSCC cells by suppression of the CDK9 mediated phosphorylation of RNA polymerase II. CDKI-73 effectively induced apoptosis as a single agent and synergized anti-tumor activity of cisplatin in HSCC cells. Taken together, our study presents compelling evidence for developing CDK9 inhibitors, such as CDKI-73, as new therapeutic strategy for HSCC.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Cao S,Yu Y,Chen S,Lei D,Wang S,Pan X,Peng Jdoi
10.1016/j.bbrc.2016.11.049subject
Has Abstractpub_date
2017-01-22 00:00:00pages
536-541issue
4eissn
0006-291Xissn
1090-2104pii
S0006-291X(16)31904-0journal_volume
482pub_type
杂志文章abstract::We have analyzed heteroplasmy of mitochondrial DNA in clonal cultures from two patients with Kearns-Sayre syndrome, and have found that individual muscle or fibroblast clones contained either a mixed (i.e. heteroplasmic) population of normal and deleted mitochondrial DNAs, or only normal mitochondrial DNAs (i.e. homop...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(89)92499-6
更新日期:1989-04-28 00:00:00
abstract::HMG-CoA reductase was located to the envelope membranes of pea etioplasts, the first report of the suborganelle localization of this key enzyme in isoprenoid synthesis. The enzyme was purified 156 fold from isolated envelope membranes. Purification was achieved by detergent solubilization, hydroxylapatite chromatograp...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(92)91227-h
更新日期:1992-04-15 00:00:00
abstract::In the present study we evaluated the effect of interleukin 1-beta on adenylate cyclase activity in 235-1 pituitary cell line. The dose-response curve of interleukin 1 beta effect on adenylate cyclase activity showed a significant inhibition of basal enzyme activity at 1 pM concentration, while the inhibition of forsk...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(88)81252-x
更新日期:1988-09-30 00:00:00
abstract::Smooth muscle of guinea-pig taenia caecum was desensitized by treatment with 10(-4)M carbachol or 10(-4)M histamine for 30 min in Ca-free solution containing 2mM EGTA. Phosphatidylinositol turnover stimulated by carbachol was not reduced by desensitization with either carbachol or histamine, while the turnover stimula...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(89)92371-1
更新日期:1989-07-31 00:00:00
abstract::Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) may play important roles during hepatitis B virus (HBV) infection. In this study, we used a recombinant human soluble death receptor 5 (sDR5) to explore its effect in a mouse model of HBV-induced acute hepatitis. By measuring blood transaminase activity a...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2006.11.024
更新日期:2007-01-12 00:00:00
abstract::AMP, an allosteric inhibitor at neutral pH, activates snakes muscle fructose 1,6-bisphosphatase at pH 9.2. The activation is virtually unique for the snake muscle enzyme: activation was not observed for the enzymes from either human and rabbit liver or porcine kidney. The activation is Mg(2+)-dependent but was not obs...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.8356
更新日期:1998-03-27 00:00:00
abstract::The first several months of life are a critical period for neuronal plasticity in the visual cortex, during which anatomical and physiological development depends upon visual experience. Rearing in darkness slows the time course of this critical period, such that at 5 weeks normal cats are more plastic than dark-reare...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.5706
更新日期:2001-10-12 00:00:00
abstract::Extracellular deoxycytidine (CdR) was previously shown to be salvaged into water soluble [1] and also into lipidic [2] precursors of phospholipids in stimulated lymphocytes and in lymphoma cells [3]. In this paper we have described that non-dividing murine macrophages salvaged not only 5-3H-CdR but also tritiated thym...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.1611
更新日期:1993-05-28 00:00:00
abstract::The chloroethylnitrosoureas are useful antitumor agents which evidently exert a significant part of their cytotoxic action through the formation of a unique 1-(3-deoxycytidyl), 2-(1-deoxyguanosinyl)ethane cross-link in DNA. It has been suggested that this cross-link is formed from O6-(2-chloro-ethyl)guanine, an initia...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(87)80249-8
更新日期:1987-11-13 00:00:00
abstract::Accumulation of misfolded proteins within the lumen of the mammalian endoplasmic reticulum (ER) activates the unfolded protein response (UPR). ATF6 and Ire1p are ER-associated proteins that control UPR-specific transcription systems in mammals; UPR signaling involves cleavage of ATF6 and splicing of XBP1 mRNA initiate...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.03.058
更新日期:2004-04-30 00:00:00
abstract::Isocitrate dehydrogenase 1 (IDH1) mutations have been detected in gliomas and other tumors. Although IDH1 catalyzes the oxidative carboxylation of isocitrate to α-ketoglutarate (α-KG) in cytosol, mutated IDH1 proteins possess the ability to change α-KG into the oncometabolite D-2-hydroxyglutarate (D-2HG). Several mono...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2015.09.070
更新日期:2015-10-30 00:00:00
abstract::The possible formation of a stable complex between extracellular signal-regulated kinases (ERKs) and Raf protein kinases was investigated in an attempt to understand the molecular mechanism by which Raf protein kinases were differentially regulated in response to the various stimuli, leading to the activation of ERKs ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1996.1846
更新日期:1996-12-13 00:00:00
abstract::In the presence of 1 mM EGTA, the addition of the calcium ionophore ionomycin to human platelets loaded with 30 microM fura-2 could elevate [Ca2+]i from less than 100 nM to a maximum of greater than 3 microM, presumably by discharge of Ca2+ from internal stores. Under the same conditions thrombin could maximally incre...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(86)80114-0
更新日期:1986-08-29 00:00:00
abstract::The anthrax lethal factor (LF) is a Zn(2+)-endopeptidase specific for mitogen-activated protein kinase kinases (MAPKKs), which are cleaved within their N-terminal region. Much line of effort was carried out to elucidate the catalytic activity of LF for designing the inhibitor and to understand the cellular mechanism o...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2003.11.110
更新日期:2004-01-02 00:00:00
abstract::The composition of intestinal glycosphingolipids during normal and hormone-perturbed development was investigated. The concentrations of glycosphingolipids of mouse small intestine were affected by the injection of thyroxine or cortisone during suckling and weaning periods. GDla was reduced by the hormonal treatment a...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(84)90898-2
更新日期:1984-03-30 00:00:00
abstract::3q21q26 syndrome, an acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS) with chromosomal translocations or inversions between the bands 3q21 and 3q26, is frequently associated with dysmegakaryocytopoiesis and increased platelet counts at the initial diagnosis. Since the EVI1 gene at 3q26 is transcriptional...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2002.6693
更新日期:2002-04-05 00:00:00
abstract::The human gene Teratocarcinoma-derived growth factor 1 (TDGF1)/Cripto-1/CR-1 which is expressed in a wide variety of human carcinomas is a member of the EGF-cripto FRL1 cryptic (EGF-CFC) gene family. A majority of human colorectal tumors and hepatomas are known to possess a constitutively active canonical Wnt/beta-cat...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.01.143
更新日期:2007-03-30 00:00:00
abstract::The ATPase activity of F1 isolated from the thermophilic bacterium PS3 is stimulated at 30 degrees C by the anionic detergents cholate or deoxycholate. Maximal activity obtained with these detergents (35 mumol/min X mg) is similar to the activity reported for the optimal temperature, 75 degrees C. The activity is line...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(86)90417-1
更新日期:1986-05-14 00:00:00
abstract::Interest in lipoamino acids as endogenous modulators of G-protein coupled receptors has escalated due to their involvement in a variety of physiologic processes. In particular, a role for these amino acid conjugates has emerged in the endocannabinoid system. The study presented herein investigated the effects of N-ara...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2017.07.038
更新日期:2017-09-02 00:00:00
abstract::The effects of chlorpromazine on either the activity of mouse brain nitric oxide synthase or the induction of lung nitric oxide synthase in mice and rats were studied. Chlorpromazine inhibited the nitric oxide synthase activity in mouse brain cytosol. This effect could be reversed by adding an excess of calmodulin. In...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.2246
更新日期:1993-10-15 00:00:00
abstract::CMP-Kdn synthetase catalyses the reaction of sialic acids (Sia) and cytidine-5'-triphosphate (CTP) to the corresponding activated sugar nucleotide CMP-Sia and pyrophosphate PP(i). STD NMR experiments of a recombinant nucleotide cytidine-5'-monophosphate-3-deoxy-d-glycero-d-galacto-nonulosonic acid synthetase (CMP-Kdn ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.12.040
更新日期:2005-02-11 00:00:00
abstract::Disrupted-in-Schizophrenia 1 (DISC1) is a promising genetic risk factor for major mental disorders. Many groups repeatedly reported a role for DISC1 in brain development in various strains of mice and rats by using RNA interference (RNAi) approach. Nonetheless, due to the complexity of its molecular disposition, such ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.08.117
更新日期:2010-10-01 00:00:00
abstract::Breast cancer amplified sequence 2 (BCAS2) was initially identified as a gene that was overexpressed and amplified in some breast cancer cell lines. It was later found to be a component of the spliceosome. Here, we identified BCAS2 as an estrogen receptor (ER) alpha interacting protein by yeast two-hybrid screening. I...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.12.187
更新日期:2005-03-11 00:00:00
abstract::Extracellular matrix facilitates anchorage-dependent cell survival via interaction of its arginine-glycine-aspartate (RGD) motif with integrins. In this report, we describe an unexpected, apoptosis-promoting the effect of immobilized RGD (iRGD) on tumor necrosis factor-alpha (TNF-alpha)-induced apoptosis. Mesangial ce...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.3654
更新日期:2000-10-22 00:00:00
abstract::Bacterial chemotaxis allows cells to swim toward a more favorable environment. Capillary assays are a major method for exploring bacterial responses to attractive and repellent chemicals, but the accumulation process obtained using a capillary containing chemicals has not been investigated fully. In this study, we qua...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2016.12.152
更新日期:2017-01-29 00:00:00
abstract::To investigate the mechanism underlying the antiatherogenic effect of estrogen, we examined the role of estrogen in the regulation of endothelin-1 (ET-1) production by cultured bovine carotid arterial endothelial cells. Treatment of the cells with 17beta-estradiol dose dependently inhibited gene expression and peptide...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.9409
更新日期:1998-10-09 00:00:00
abstract::It is demonstrated that carbon fixation in photosynthesis is regulated in two kinetically coupled pathways involving the specialized pair of non-equivalent, enzyme-bound glycerate-3-P (3-PGA) molecules obtained from ribulose 1,5-bisphosphate (RuBP) carboxylation in the light. A non-cyclic pathway is suggested (reactio...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(88)90534-7
更新日期:1988-01-15 00:00:00
abstract::MAEBL is an erythrocyte binding protein located in the rhoptries and on the surface of mature merozoites, being expressed at the beginning of schizogony. The structure of MAEBL originally isolated from rodent malaria parasites suggested a molecule likely to be involved in invasion. We thus became interested in identif...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.01.050
更新日期:2004-03-05 00:00:00
abstract::The first peptidergic neurohormone from the ticks Ixodes ricinus and Boophilus microplus has been identified by using a combination of immunocytochemistry and mass spectrometric analysis of single cells. The novel peptide (Ixori-PVK, PALIPFPRV-NH2) shows a high sequence homology with members of the insect periviscerok...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2005.10.165
更新日期:2005-12-30 00:00:00
abstract::Primary in vitro immunization of peripheral blood lymphocytes has been studied for the production of human monoclonal antibodies. Depletion of a lysosome-rich cell population, containing large granular lymphocytes, monocytes, and a subset of T suppressor cells, was shown to be crucial before the cells could be immuniz...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(87)80223-1
更新日期:1987-11-13 00:00:00