Abstract：
:Coenzyme CoQ10 (CoQ10), a ubiquinone compound, has been reported to inhibit tyrosinase activity and melanin production in melanoma B16F10 cells. However, the molecular mechanism underlying this inhibitory effect is poorly understood. In this paper we aimed to investigate the molecular mechanisms involved in the anti-melanogenic activity of CoQ10 (1-2 μM) in UVA (5 J/cm2)-irradiated keratinocyte HaCaT cells and α-MSH stimulated B16-F10 cells. It was observed that CoQ10 suppressed p53/POMC, α-MSH production as well as inhibited ROS generation in UVA-irradiated keratinocyte HaCaT cells. CoQ10 down-regulated the melanin synthesis in α-MSH-stimulated B16-F10 cells by suppressing the MITF expression by down regulating the cAMP mediated CREB signaling cascades. Furthermore, in vivo evidence demonstrated the inhibitory effect of CoQ10 on endogenous pigmentation in zebrafish. Increased nuclear Nrf2 translocation accompanied by the induction of HO-1 and γ-GCLC genes were observed in CoQ10 treated keratinocyte HaCaT cells. Notably, silencing of Nrf2 (siRNA transfection) significantly diminished CoQ10-mediated anti-melanogenic activity, as evidenced by impaired antioxidant HO-1 gene, uncontrolled ROS generation, and α-MSH production following UVA irradiation. To conclude, CoQ10 is an effective de-pigmention or skin-whitening agent and could be used in cosmetics for topical application.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
Hseu YC,Ho YG,Mathew DC,Yen HR,Chen XZ,Yang HLdoi
10.1016/j.bcp.2019.04.015subject
Has Abstractpub_date
2019-06-01 00:00:00pages
299-310eissn
0006-2952issn
1873-2968pii
S0006-2952(19)30150-9journal_volume
164pub_type
杂志文章abstract：:Cobalt is suspected to cause memory deficit in humans and was reported to induce neurotoxicity in animal models. We have studied the effects of cobalt in primary cultures of mouse astrocytes. CoCl(2) (0.2-0.8mM) caused dose-dependent ATP depletion, apoptosis (cell shrinkage, phosphatidylserine externalization and chro...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2006.11.008
更新日期：2007-03-01 00:00:00
abstract：:We studied several steps of methionine metabolism in isolated rat hepatocytes both with and without the presence of a hepatotoxic agent (D-galactosamine). By use of selective labelling either on methyl or on carboxyl groups, we showed that intracellular methionine is used preferentially for the methylation of phosphol...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(86)90699-4
更新日期：1986-12-01 00:00:00
abstract：:A comparison between the effects of schisandrin B (Sch B) and butylated hydroxytoluene (BHT) treatments on hepatic antioxidant status was made to identify the critical antioxidant action of Sch B involved in hepatoprotection in mice. Whereas Sch B treatment (3 mmol/kg/day x 3, p.o.) increased the hepatic mitochondrial...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(96)00517-5
更新日期：1996-12-13 00:00:00
abstract：:Stimulated mast cells produce and release adenosine, and the release of mast cell mediators is potentiated by adenosine, yet very little is known regarding mast cell purine metabolism. Because 5-amino-4-imidazolecarboxamide riboside (AICA riboside) has been shown to alter adenosine metabolism and accelerate the replet...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(86)90757-4
更新日期：1986-12-15 00:00:00
abstract：:During the molecular transduction of itch, the stimulation of pruriceptors on sensory fibers leads to the activation or sensitization of ion channels, which results in a consequent depolarization of the neurons. These ion channels mostly belong to the transient receptor potential (TRP) channels, which are involved in ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2020.114310
更新日期：2021-01-01 00:00:00
abstract：:The reduction of penicillamine disulfide by reductants in aqueous solutions has been studied and compared with that for captopril disulfide. Whereas near quantitative reduction for captopril disulfide was achieved with tributyl phosphine (200 mM), no detectable penicillamine was formed from penicillamine disulfide. Th...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(87)90070-0
更新日期：1987-04-15 00:00:00
abstract：:The PI3K/AKT/mTOR signaling pathway regulates cell proliferation, survival and angiogenesis. The mammalian target of rapamycin (mTOR) is a protein kinase ubiquitously expressed within cells that regulates cell growth and survival by integrating nutrient and hormonal signals. mTOR exists in two complexes, mTORC1 and mT...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2011.11.027
更新日期：2012-02-15 00:00:00
abstract：:The activities of the xenobiotic metabolizing enzymes, aldehyde oxidase and xanthine oxidase, were determined in partially purified fractions of adult guinea-pig liver at given times in the day or night. A marked circadian variation in aldehyde oxidase activity was observed with several substrates (phthalazine, phenan...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(89)90185-8
更新日期：1989-05-01 00:00:00
abstract：:Bromodomains are epigenetic readers of histone acetylation involved in chromatin remodeling and transcriptional regulation. The human proteome comprises 46 bromodomain-containing proteins with a total of 61 bromodomains, which, despite highly conserved structural features, recognize a wide array of natural peptide lig...
journal_title：Biochemical pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.bcp.2015.12.005
更新日期：2016-04-15 00:00:00
abstract：:Alone and in synergistic combination with retinoids, dietary glucarate inhibits both the chemical induction and growth of rat mammary tumors. To investigate the pharmacokinetics of glucarate, [14C]glucarate was synthesized, converted to the calcium salt, and administered to rats bearing primary mammary tumors. When gi...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(94)90544-4
更新日期：1994-04-29 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(86)90653-2
更新日期：1986-11-01 00:00:00
abstract：:To investigate the importance of NAD(P)H:quinone oxidoreductase 1 (or DT-diaphorase; NQO1) in the bioactivation of antitumor quinones, we established a series of stably transfected cell lines derived from BE human colon adenocarcinoma cells. BE cells have no NQO1 activity due to a genetic polymorphism. The new cell li...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(01)00631-1
更新日期：2001-06-15 00:00:00
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journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/s0006-2952(00)00563-3
更新日期：2001-02-01 00:00:00
abstract：:The characteristics of the uptake of acetaminophen (N-acetyl-p-aminophenol or paracetamol, APAP) in incubations of isolated rat liver cells were consistent with diffusion of the drug being the predominant mechanism of APAP influx in these cells at concentrations above 0.5 mM. At lower substrate concentrations (below 0...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(93)90300-l
更新日期：1993-04-22 00:00:00
abstract：:The present study was designed to evaluate the effects of novel and recognised compounds at human recombinant A(2B) adenosine receptors expressed in Chinese hamster ovary (hA(2B)CHO), in human embryonic kidney 293 (hA(2B)HEK-293) and at endogenous A(2B) receptors in human mast cells (HMC-1). Saturation binding experim...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2005.08.018
更新日期：2005-11-25 00:00:00
abstract：:In addition to the established control of acid secretion of the class of proton pump inhibitors (PPI) reactivity from the pyridyl methyl sulphinyl benzimidazole type a second independent anti-inflammatory reactivity was observed in vitro. This inhibitory reactivity was clearly noticed using three different assays wher...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2006.01.009
更新日期：2006-04-28 00:00:00
abstract：:The influence of age on the mixed function oxidase system from a non-human primate was studied. Microsomes were isolated from the livers of female Macaca nemestrina ranging from 2 to 21 years of age. No significant age-related change was observed in either the cytochrome P-450 content or the NADPH cytochrome c reducta...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(85)90025-5
更新日期：1985-08-15 00:00:00
abstract：:Cyclosporine A (CsA) is the immunosuppressor most frequently used in transplant surgery and in the treatment of autoimmune diseases because of its specific inhibiting effect on signal transduction pathways of cell T receptor. It has been shown that CsA is able to generate reactive oxygen species and lipid peroxidation...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2004.10.012
更新日期：2005-02-01 00:00:00
abstract：:Multiple molecular forms of cyclic nucleotide phosphodiesterase have been characterized in various tissues and cells according to their substrate specificity, intracellular location, and calmodulin dependence. The purpose of this study was to evaluate the possible involvement of different molecular forms of phosphodie...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(90)90304-4
更新日期：1990-08-15 00:00:00
abstract：:Antibodies raised against purified hog renal or intestinal brush border protein or against purified hog kidney angiotensin I converting enzyme (ACE) were used to characterize renal and intestinal brush border ACE by techniques of differential solubilization, fused-rocket, line absorption and crossed-immunoelectrophore...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(83)90554-3
更新日期：1983-01-15 00:00:00
abstract：:Clonidine-displacing substance (CDS) from brain is biologically active in the kidney and stomach and on platelets. To determine whether CDS is contained in these and other peripheral tissues, homogenates of fresh brain, eight other organs and serum from rat were ultrafiltered (less than 10,000 mol. wt only), dried and...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(92)90410-k
更新日期：1992-08-18 00:00:00
abstract：:Cancer develops through a series of genetic changes leading to malignant transformation. Numerous gene and pathways involved in stages of progression to frank malignancy have been elucidated. These genetic changes result in aberrations in fundamental cellular processes controlling proliferation, apoptosis, differentia...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2006.03.004
更新日期：2006-08-28 00:00:00
abstract：:Uptake of two ellipticine derivatives, 2-N-methyl-ellipticinium (NME) and 2-N-methyl-9-hydroxy-ellipticinium, by sensitive and resistant Chinese hamster lung cells was studied. The results show that uptake and retention of these molecules by both types of cells were identical, thus indicating that the resistance to el...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(83)90622-6
更新日期：1983-03-15 00:00:00
abstract：:We employed both [5-3H] ara-C and ([2-14C] ara-C labeled L1210 DNA for analysis following exposure to alkali under various conditions. The results demonstrated that the tritium label on C5 of ara-C molecules incorporated in DNA was exchanged with water under alkaline conditions and, therefore, radioactivity was subseq...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(82)90475-0
更新日期：1982-03-01 00:00:00
abstract：:Sulphate conjugation was investigated using extracts of human foetal liver cells in culture. The three reactions which are involved in sulphate conjugation were measured singly or in combination: they are (i) the PAPS generation catalyzed by ATP-sulphurylase and adenosine 5'-phosphosulphate (APS)-kinase, (ii) the phen...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(88)90331-0
更新日期：1988-12-15 00:00:00
abstract：:Isolated rat liver mitochondria have been incubated in the presence of the general anesthetic 2,6-diisopropylphenol (0-100 microM) and the efficiency of oxidative phosphorylation has been evaluated by measuring the respiratory rates, the rates of ATP synthesis or hydrolysis and the magnitude of the transmembrane elect...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(91)90684-w
更新日期：1991-06-21 00:00:00
abstract：:The response and engagement of host normal tissues in malignant disease are major factors in therapeutic resistance. Physically, solid tumors have regions of hypoxia and acidosis. These physical stresses can lead to a more aggressive malignant phenotype through activation of HIF, GLUT-1, carbonic anhydrase IX, and sub...
journal_title：Biochemical pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.bcp.2009.01.006
更新日期：2009-06-01 00:00:00
abstract：:Epidermal growth factor (EGF) rapidly stimulates the release of arachidonic acid in A549 cells by a mechanism that is sensitive to pertussis toxin [1]. We show that EGF treatment of A549 cells stimulates phosphorylation of cytosolic phospholipase A2 (cPLA2) through a mechanism that is similarly inhibited by pertussis ...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(95)02442-5
更新日期：1996-07-26 00:00:00
abstract：:Physiological levels of wild-type (wt) apolipoprotein E (apoE) in plasma mediate the clearance of cholesterol-rich atherogenic lipoprotein remnants while higher than normal plasma apoE concentrations fail to do so and trigger hypertriglyceridemia. This property of wt apoE reduces significantly its therapeutic value as...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/j.bcp.2012.09.006
更新日期：2012-12-01 00:00:00
abstract：:Chlorzoxazone is mainly metabolized to 6-hydroxychloroxazone (6-OHchlorzoxazone) by the ethanol-inducible cytochrome P450 2E1 (CYP2E1). To evaluate the impact of ethanol consumption on the enzyme induction, the pharmacokinetics of chlorozoxazone and 6-OHchlorzoxazone were studied in alcoholic and control subjects. Fif...
journal_title：Biochemical pharmacology
pub_type： 杂志文章
doi：10.1016/0006-2952(94)90524-x
更新日期：1994-04-29 00:00:00
