Abstract:
:Mucus hypersecretion is an important manifestation in patients with chronic inflammatory airway diseases. Mucin 5AC (MUC5AC) is a major component of airway mucus. MUC5AC expression is regulated by epidermal growth factor receptor (EGFR) which can be activated by reactive oxygen species (ROS). Hyaluronan (HA), a linear glycosaminoglycan with molecular weights ranging from 2 × 10(5) to 1 × 10(7), is expressed in airway epithelium and can be depolymerized by ROS into hyaluronan fragments. The mechanisms through which fragmented HA exerts its biologic functions have been elucidated by interactions with its receptor CD44. The aim of our study was to examine the role of HA and CD44 in ROS-induced EGFR activation and MUC5AC expression. We exposed NCI-H292 cells to ROS generated by xanthine/xanthine oxidase (X/XO). ROS-induced EGFR phosphorylation, which was activated by tissue kallekrein (TK) activation and EGF release. We found ROS promoted CD44 co-immunoprecipitation with EGFR and MUC5AC up-regulation. These effects were mimicked by hyaluronan fragments. All the effects were inhibited by blocking CD44 or EGFR, suggesting that CD44 plays a critical role in ROS-induced MUC5AC up-regulation. These results show that ROS depolymerizes hyaluronan into fragments, and these fragments bind their receptor CD44 to induce TK activation, which cleaves EGF precursors into mature EGF to activate its receptor EGFR. Furthermore, we provide evidence that hyaluronan fragments are sufficient to induce CD44/EGFR interaction and EGFR signaling which lead to MUC5AC expression. The results indicate that the regulation of ROS-induced MUC5AC expression by hyaluronan and CD44 may provide important insights in the mechanism of mucus hypersecretion.
journal_name
Mol Cell Biochemjournal_title
Molecular and cellular biochemistryauthors
Yu H,Li Q,Zhou X,Kolosov VP,Perelman JMdoi
10.1007/s11010-011-0740-6subject
Has Abstractpub_date
2011-06-01 00:00:00pages
65-75issue
1-2eissn
0300-8177issn
1573-4919journal_volume
352pub_type
杂志文章abstract::The epithelial cells of the human intestine exhibit a cholinesterase activity which is restricted to the apex of the villi. This activity displays a maximum in the colon and a minimum in the jejunum. Contrary to most of the studied vertebrates, the human cells present both acetylcholinesterase and butyrylcholinesteras...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00233119
更新日期:1991-12-11 00:00:00
abstract::Hepcidin is a cysteine-rich, dual-function peptide with antimicrobial activity that plays a crucial role in iron homeostasis. Here, we have identified two hepcidin-like cDNA sequences from pigeon, Columba livia. The two cDNAs consist of 295 and 380 nucleotides, respectively, and were named HP1 and HP2. Sequence alignm...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-007-9543-1
更新日期:2007-11-01 00:00:00
abstract::Silkworm (Bombyx mori) is not only a model organism for scientific studies, but also a commercial insect for agricultural production. BmAtg8 (a B. mori homolog of yeast Atg8) plays crucial roles in macroautophagy (hereafter referred to autophagy), which is helpful for silkworm metamorphosis. Relevant mechanism about B...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-019-03513-y
更新日期:2019-07-01 00:00:00
abstract::We investigated the expression of the nuclear-encoded genes controlling the mitochondrial properties in the mouse gastrocnemius muscle to gain insight into the mitochondrial biogenesis that occurs during the muscle degeneration/regeneration induced by freezing. In addition, we tested whether the muscle regeneration is...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-010-0668-2
更新日期:2011-03-01 00:00:00
abstract::Cervical cancer remains the second leading cause of gynecologic cancer-related mortality among women worldwide. STING (stimulator of interferon genes) was reported to be involved in the immune surveillance of tumors. However, the specific role of STING in cervical cancer remains unclear. In this study, we found that t...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-020-03967-5
更新日期:2020-11-03 00:00:00
abstract::Cultured cardiac myocytes were depleted of ATP by incubation with oligomycin (1 mg/ml). Then the ability of the cells to oxidize various substrates and to restore ATP levels was studied. Following ATP depletion, the cells were found to be able to oxidize glucose given alone, but not palmitate. However, with both subst...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00227544
更新日期:1996-09-20 00:00:00
abstract::MicroRNA (miRNAs) is demonstrated to be present in the blood of humans and has been increasingly suggested as a novel biomarker for various pathological processes in the heart, including myocardial infarction, myocardial remodeling and progression to heart failure. In this study, we aim to evaluate the diagnostic and ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-014-2089-0
更新日期:2014-09-01 00:00:00
abstract::Ran-binding protein in microtubule-organizing center (RanBPM) has been reported to interact with the neurotrophin receptors p75NTR and TrkA, meanwhile p75NTR and TrkA can also interact with TRAF6. Whether RanBPM interacts directly with TRAF6 has not yet been established. In this study, using a yeast two-hybrid system ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-011-1002-3
更新日期:2012-01-01 00:00:00
abstract::Stratifin is a member of 14-3-3 protein family, a highly conserved group of proteins constituted by seven isoforms. They are involved in numerous crucial intracellular functions such as cell cycle and apoptosis, regulation of signal transduction pathways, cellular trafficking, cell proliferation and differentiation, c...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章,评审
doi:10.1007/s11010-007-9538-y
更新日期:2007-11-01 00:00:00
abstract::Although studies performed in vitro and with transfected cells in culture suggest a role for liver fatty acid binding protein (L-FABP) in regulating fatty acid oxidation and fat deposition, the physiological significance of this possibility is not completely clear. To begin to address this question, the effect of L-FA...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-008-9989-9
更新日期:2009-04-01 00:00:00
abstract::Shin et al. (Biochim Biophys Acta 444: 794-801, 1976) described the subcellular location of [3H]folic acid after injection into rats. The microsomal fraction of the liver contained relatively large amounts of tracer initially but lower amounts at later times. Because of the heterogeneous nature of the microsomal fract...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:
更新日期:1990-09-03 00:00:00
abstract::Hepatic stellate cells (HSCs), also referred to as Ito cells, perisinusiodal cells and fat-storing cells, have numerous vital functions. They are the main extracellular matrix-producing cells within the liver and are involved in the storage of retinol. HSCs are also known to secrete a number of liver mitogens. Current...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1023/a:1024184826728
更新日期:2003-06-01 00:00:00
abstract::Amida was first isolated from a rat hippocampal cDNA library as an Arc-associated protein. Although previous studies have shown that Amida mRNA is predominantly expressed and developmentally regulated in rat testis and overexpression induces apoptosis, the function of Amida remains unclear. In this study, we found tha...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:
更新日期:2003-04-01 00:00:00
abstract::Lysosomes are a cell organelle type processing antimicrobial activity. Here, we investigate the lysosomal activity in a primary cell line, bovine aortic endothelial cells (BAECs), during cellular aging, based on the antimicrobial activity of lysosomes isolated from BAECs at cell passages 4, 6, 8, and 10. Cytochemical ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-010-0415-8
更新日期:2010-07-01 00:00:00
abstract::In order to initiate the study of the functional differences between myosin alkali light chain isoforms and to investigate the mechanisms of their differential expression, we have isolated cDNA clones for two human alkali light chain isoforms. Here we report DNA sequence and RNA blotting analyses that demonstrate that...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00219255
更新日期:1989-06-01 00:00:00
abstract::Several peptides derived from microtubule-associated tau protein, have been tested as substrates for glycogen synthase kinase 3 (GSK 3). In the absence of cofactors, GSK 3 can modify serines or threonines followed by prolines. In other cases, a phosphorylation in position +4 is required for the phosphorylation of thre...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00229744
更新日期:1996-12-06 00:00:00
abstract::This comparative study investigates the relationship between sarcoplasmic reticulum (SR) calcium(Ca2+)-ATPase transport activity and phospholamban (PLB) phosphorylation in whole cardiac homogenates of spontaneously hypertensive rats (SHR) and their parent, normotensive Wistar Kyoto (WKY) strain during early postnatal ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00408641
更新日期:1996-10-01 00:00:00
abstract::The present study was aimed to investigate the protective effects of 17β-estradiol (E2) and estrogen receptor α (ERα) on isoproterenol (ISO)-treated H9c2 cardiomyoblast cells. In the present study, we treated H9c2 cells with ISO, a β-adrenergic receptor agonist, to induce myocardiac hypertrophy. Pre-administration of ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-017-3048-3
更新日期:2017-10-01 00:00:00
abstract::Both idiopathic restrictive cardiomyopathy (IRCM) and hypertrophic cardiomyopathy (HCM) are part of the same disease spectrum and are due to sarcomeric gene mutations. A patient with restrictive physiology without left ventricular hypertrophy (LVH) would be diagnosed as IRCM, while one with LVH would be diagnosed as H...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-009-0157-7
更新日期:2009-11-01 00:00:00
abstract::Lipoprotein(a) [Lp(a)] is a highly atherogenic lipoprotein, whose metabolism is poorly understood. Efficient and secure drugs that can lower elevated plasma Lp(a) concentrations are currently lacking. Fibroblast growth factor-21 (FGF-21), a member of the FGFS super family, regulates glucose and lipid metabolism in hep...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-014-2044-0
更新日期:2014-08-01 00:00:00
abstract::Frequenin is a member of the neuronal Ca(2+) sensor protein family, implicated in being the modulator of the neurotransmitter release, potassium channels, phosphatidylinositol signaling pathway and the Ca(2+)-dependent exocytosis of dense-core granules in the PC12 cells. Frequenin exhibits these biological activities ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-006-9215-6
更新日期:2006-10-01 00:00:00
abstract::The objective of the present study was to compare energy substrate fluxes through metabolic pathways leading to mitochondrial citrate synthesis and release in normal and diseased rat hearts using 13C-substrates and mass isotopomer analysis by gas chromatography-mass spectrometry (GCMS). This study was prompted by our ...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:
更新日期:2003-01-01 00:00:00
abstract::Pathophysiology of polyunsaturated fatty acids (PUFAs) is associated with aberrant lipid and oxygen metabolism. In particular, under oxidative stress, PUFAs are prone to autocatalytic degradation via peroxidation, leading to formation of reactive aldehydes with numerous potentially harmful effects. However, the pathol...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-014-2229-6
更新日期:2015-01-01 00:00:00
abstract::Studies have established that major increases in muscarinic acetylcholine receptor (mAchR) binding in the brain appear to coincide with synaptogenesis. The neuroblastoma x glioma hybrid NG108-15 cell line has been demonstrated to possess numerous functional characteristics of intact neurons, including synapse formatio...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00222618
更新日期:1989-04-11 00:00:00
abstract::Under synchronized conditions daily rhythms run in precise phase relationships. Long lasting shift-work disturbs circadian rhythms and causes metabolism dysfunction. As a result of frequent shifts of the light (L):dark (D) cycle the circadian system has to adjust to a new regimen repeatedly, and organism can never ach...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-010-0636-x
更新日期:2011-02-01 00:00:00
abstract::The major protein in the sarcoplasmic reticulum (SR) membrane is the Ca2+ transporting ATPase which carries out active Ca2+ pumping at the expense of ATP hydrolysis. The aim of this work was to elucidate the mechanisms by which oxidative stress induced by Fenton's reaction (Fe(2+)+H2O2-->HO.+OH-+Fe3+) alters the funct...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00420912
更新日期:1996-06-21 00:00:00
abstract::MNSFβ, a ubiquitin-like protein, covalently binds to various target proteins including proapoptotic Bcl-G. During the course of isolation of MNSFβ-conjugating enzyme(s), we identified a novel target protein for MNSFβ. MALDI-TOF MS fingerprinting revealed that the MNSFβ-interacting protein is HSPA8 (heat shock 70-kDa p...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-016-2795-x
更新日期:2016-10-01 00:00:00
abstract::The effects of Mg2+ and Ca2+ deprivation on survival and growth of normal and transformed cultured cells were studied. Normal fibroblast from several origins (mouse, hamster and human) did not grow in 2 microM Mg2+ medium, whereas transformed fibroblasts (mouse and rat) and tumor cells of other types (mouse adrenocort...
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/BF00231313
更新日期:1984-01-01 00:00:00
abstract::Ionizing radiation induces apoptosis in human Molt-4 leukemia cells in a p53-dependent manner. The tumor suppressor p53 stimulates various downstream targets that presumably trigger, individually or in concert, de novo ceramide synthesis and intrinsic apoptosis via mitochondrial outer membrane permeabilization (MOMP)....
journal_title:Molecular and cellular biochemistry
pub_type: 杂志文章
doi:10.1007/s11010-020-03874-9
更新日期:2020-12-01 00:00:00
abstract::Chronic exposure to many heavy metals and metal-derivatives is associated with an increased risk of cancer, although the mechanisms of tumorigenesis are largely unknown. Approximately 125 scientists attended the 3rd Conference on Molecular Mechanisms of Metal Toxicity and Carcinogenesis and presented the latest resear...
journal_title:Molecular and cellular biochemistry
pub_type:
doi:10.1007/s11010-005-8210-7
更新日期:2005-11-01 00:00:00