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HepG2.2.15

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https://www.readbyqxmd.com/read/28714938/taxifolin-activates-the-nrf2-anti-oxidative-stress-pathway-in-mouse-skin-epidermal-jb6-p-cells-through-epigenetic-modifications
#1
Haixue Kuang, Zhenqiu Tang, Chengyue Zhang, Zhibin Wang, Wenji Li, Chunjuan Yang, Qiuhong Wang, Bingyou Yang, Ah-Ng Kong
Nuclear factor erythroid-2 related factor 2 (Nrf2) is a vital transcription factor that regulates the anti-oxidative defense system. Previous reports suggested that the expression of the Nrf2 gene can be regulated by epigenetic modifications. The potential epigenetic effect of taxifolin (TAX), a potent cancer chemopreventive agent, in skin cancer chemoprotection is unknown. In this study, we investigated how Nrf2 is epigenetically regulated by TAX in JB6 P+ cells. TAX was found to inhibit the 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced colony formation of JB6 P+ cells...
July 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28714848/hepatitis-b-virus-x-protein-activates-e3-ubiquitin-ligase-siah-1-to-control-virus-propagation-via-a-negative-feedback-loop
#2
Sujeong Yeom, Soo Shin Kim, Hyerin Jeong, Kyung Lib Jang
The seven in absentia homologue 1 (Siah-1) protein is an E3 ubiquitin ligase that induces ubiquitin-dependent proteasomal degradation of HBx, the principal regulatory protein of hepatitis B virus (HBV); however, its role in HBV propagation remains unknown. Here, we found that HBx upregulates Siah-1 levels in HepG2 but not in Hep3B cells, in which p53 is absent. For this effect, HBx sequentially activated ataxia telangiectasia mutated kinase and checkpoint kinase 2 via phosphorylation at the Ser-1981 and Thr-68 residues, respectively, which led to the activation of p53 via phosphorylation at the Ser-15 and Ser-20 residues...
July 17, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28709980/downregulation-of-usp18-inhibits-growth-and-induces-apoptosis-in-hepatitis-b-virus-related-hepatocellular-carcinoma-cells-by-suppressing-bcl2l1
#3
Jing Cai, Tiande Liu, Xiaoliu Jiang, Changkuo Guo, Anwen Liu, Xinlan Xiao
Ubiquitin-specific peptidase 18 (USP18) is closely related with hepatitis B virus (HBV), which has been involved in tumourigenesis. However, there has been little research into the role of USP18 on the progression of hepatocellular carcinoma (HCC), especially in HBV-related HCC. In present study, we found that USP18 expression was aberrantly elevated in HCC tissues than adjacent non-tumour tissues. Importantly, USP18 expression was higher in HBV-related HCC cell lines (HepG2.2.15 and Hep3B) than HBV-unrelated HCC cell lines...
July 11, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28699009/bio-fabrication-of-silver-nanoparticles-using-the-leaf-extract-of-an-ancient-herbal-medicine-dandelion-taraxacum-officinale-evaluation-of-their-antioxidant-anticancer-potential-and-antimicrobial-activity-against-phytopathogens
#4
Rijuta G Saratale, Giovanni Benelli, Gopalakrishnan Kumar, Dong Su Kim, Ganesh D Saratale
In recent years, the use of nanoparticle-based antimicrobials has been increased due to many advantages over conventional agrochemicals. This study investigates the utilization of common medicinal plant dandelion, Taraxacum officinale, for the synthesis of silver nanoparticles (TOL-AgNPs). AgNPs were evaluated for antimicrobial activity against two important phytopathogens, Xanthomonas axonopodis and Pseudomonas syringae. The morphology, size, and structure of TOL-AgNPs were characterized using UV-visible spectroscopy and X-ray diffraction (XRD)...
July 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28678687/ceruloplasmin-inhibits-the-production-of-extracellular-hepatitis-b-virions-by-targeting-its-middle-surface-protein
#5
Kaitao Zhao, Chunchen Wu, Yongxuan Yao, Liang Cao, Zhenhua Zhang, Yifei Yuan, Yun Wang, Rongjuan Pei, Jizheng Chen, Xue Hu, Yuan Zhou, Mengji Lu, Xinwen Chen
Ceruloplasmin (CP) is mainly synthesized by hepatocytes and plays an essential role in iron metabolism. Previous reports have shown that CP levels correlate negatively with disease progression in patients with chronic hepatitis B. However, the function of CP in the hepatitis B virus (HBV) life cycle and the mechanism underlying the above correlation remain unclear. Here, we report that CP can selectively inhibit the production of extracellular HBV virions without altering intracellular viral replication. HBV expression can also downregulate the expression of CP...
June 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28672977/in-vitro-evaluation-of-novel-antiviral-activities-of-60-medicinal-plants-extracts-against-hepatitis-b-virus
#6
Ahmed Hassan Arbab, Mohammad Khalid Parvez, Mohammed Salem Al-Dosari, Adnan Jathlan Al-Rehaily
Currently, >35 Saudi Arabian medicinal plants are traditionally used for various liver disorders without a scientific rationale. This is the first experimental evaluation of the anti-hepatitis B virus (HBV) potential of the total ethanolic and sequential organic extracts of 60 candidate medicinal plants. The extracts were tested for toxicity on HepG2.2.15 cells and cytotoxicity concentration (CC50) values were determined. The extracts were further investigated on HepG2.2.15 cells for anti-HBV activities by analyzing the inhibition of HBsAg and HBeAg production in the culture supernatants, and their half maximal inhibitory concentration (IC50) and therapeutic index (TI) values were determined...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28649844/chemical-constituents-with-proprotein-convertase-subtilisin-kexin-type-9-mrna-expression-inhibitory-activity-from-dried-immature-morus-alba-fruits
#7
Pisey Pel, Hee-Sung Chae, Piseth Nhoek, Young-Mi Kim, Young-Won Chin
Phytochemical investigation for a chloroform-soluble extract of dried Morus alba fruits, selected by proprotein convertase subtilisin-kexin type 9 (PCSK9) mRNA expression monitoring assay in HepG2 cells, led to the isolation of a new benzofuran, isomoracin D (1), and a naturally occurring compound, N-(N-benzoyl-l-phenylalanyl)-l-phenylalanol (2), along with 13 known compounds (3-15). All of the structures were established by NMR spectroscopic data as well as MS analysis. Of the isolates, moracin C (7) was found to inhibit PCSK9 mRNA expression with an IC50 value of 16...
June 26, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28646655/syntheses-toxicities-and-anti-inflammation-of-h2s-donors-based-on-non-steroidal-anti-inflammatory-drugs
#8
Meng Li, Jili Li, Taofeng Zhang, Quanyi Zhao, Jie Cheng, Bin Liu, Zhen Wang, Libo Zhao, Chenwei Wang
Three series of H2S donors based on NSAIDs were synthesized and characterized by (1)H-NMR, IR and ESI-HRMS. The H2S-release abilities of all compounds were evaluated in the presence of TECP or cysteine. The results show all compounds were fast H2S-releasers, and their half-lives were in range of 0-20 min. Under the same condition, H2S released from compound 9 was more than any other compounds. In cytotoxicity aspect, all compounds but 1 and 2 displayed much lower toxicities to both LO2 and HepG2 cell lines, and the IC50 values of most compounds were over 800 μM...
June 7, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28636424/fluid-shear-stress-regulates-hepg2-cell-migration-though-time-dependent-integrin-signaling-cascade
#9
Hongchi Yu, Yang Shen, Jingsi Jin, Yingying Zhang, Tang Feng, Xiaoheng Liu
Hepatocellular carcinoma (HCC) is a subtype of malignant liver cancer with poor prognosis and limited treatment options. It is noteworthy that mechanical forces in tumor microenvironment play a pivotal role in mediating the behaviors and functions of tumor cells. As an instrumental type of mechanical forces in vivo, fluid shear stress (FSS) has been reported having potent physiologic and pathologic effects on cancer progression. However, the time-dependent mechanochemical transduction in HCC induced by FSS remains unclear...
June 21, 2017: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/28629319/polymorphism-in-asparagine-synthetase-is-associated-with-overall-survival-of-hepatocellular-carcinoma-patients
#10
Wei Li, Chengwei Dong
BACKGROUND: Recently, it is reported that asparagine synthetase (ASNS) is an independent predictor of surgical survival in hepatocellular carcinoma (HCC) patients. It is also reported that activating transcription factor 6 (ATF6) expression is decreased in HCC patients. So in the present study, we explored the relationship between ASNS and ATF6, and whether ASNS expression was associated with HCC. METHODS: ATF6 was over expressed in 3 HCC cell lines (HepG2, HepG2...
June 19, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28614380/interleukin-34-inhibits-hepatitis-b-virus-replication-in-vitro-and-in-vivo
#11
Sheng-Tao Cheng, Hua Tang, Ji-Hua Ren, Xiang Chen, Ai-Long Huang, Juan Chen
BACKGROUND: The hepatitis B virus (HBV) infection could activate the immune system and induce extensive inflammatory response. As the most important inflammatory factor, interleukins are critical for anti-viral immunity. Here we investigated whether interleukin-34 (IL-34) play a role in HBV infection. METHODOLOGY/PRINCIPAL FINDINGS: In this study, we first found that both serum IL-34 and IL-34 mRNA in PBMCs in chronic HBV patients was significantly decreased compared to the healthy controls...
2017: PloS One
https://www.readbyqxmd.com/read/28605880/js-k-a-nitric-oxide-prodrug-induces-dna-damage-and-apoptosis-in-hbv-positive-hepatocellular-carcinoma-hepg2-2-15-cell
#12
Zhengyun Liu, Guangmin Li, Ying Gou, Dongyan Xiao, Guo Luo, Joseph E Saavedra, Jie Liu, Huan Wang
Hepatocellular carcinoma (HCC) is the most important cause of cancer-related death, and 85% of HCC is caused by chronic HBV infection, the prognosis of patients and the reduction of HBV DNA levels remain unsatisfactory. JS-K, a nitric oxide-releasing diazeniumdiolates, is effective against various tumors, but little is known on its effects on HBV positive HCC. We found that JS-K reduced the expression of HBsAg and HBeAg in HBV-positive HepG2.2.15 cells. This study aimed to further examine anti-tumor effects of JS-K on HepG2...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28581822/three-new-sesquiterpenes-from-pterocarpus-santalinus
#13
Li Li, Run-Hong Tao, Ji-Ming Wu, Ya-Ping Guo, Chao Huang, Hong-Gang Liang, Le-Zhi Fan, Hai-Yan Zhang, Ren-Kuan Sun, Lei Shang, Li-Na Lu, Jian Huang, Jin-Hui Wang
Three new sesquiterpenes of canusesnol K (1), canusesnol L (2) and 12, 15-dihydroxycurcumene (3), along with five known ones (4-8), were isolated from the heartwood extract of Pterocarpus santalinus. Their structures were established by extensive analyses of 1D and 2D NMR spectroscopy, including (1)H NMR, (13)C NMR, HSQC, HMBC and NOESY, and HRESI-MS. The absolute configurations of the new compounds were established with Modified Mosher's method. The cytotoxic activities of all these compounds against HepG2 (human liver cancer), MCF-7 (human breast cancer), MDA-MB-231 (human breast cancer), and Hela (human cervical carcinoma) cancer cell lines were evaluated...
June 5, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/28578348/tlr4-influences-hepatitis-b-virus-related-hepatocellular-carcinoma-by-regulating-the-wnt-%C3%AE-catenin-pathway
#14
Yuanqin Yin, Fei Li, Songlin Li, Jingjing Cai, Jing Shi, Youhong Jiang
BACKGROUND/AIMS: We investigated the correlation between toll-like receptor 4 (TLR4) and β-catenin for disclosing the potential pathogenesis of hepatocellular carcinoma (HCC). METHODS: Immunohistochemical toolkit was implemented to measure the expression of TLR4 and β-catenin in 98 cases of HCC tissues and adjacent tissues. After setting up the HepG2.2.15 hepatitis B virus (HBV) related HCC cell line, we divided the cells into the control group, TLR4 siRNA group, β-catenin siRNA group, and pcDNA...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28574707/new-ustilaginoidins-from-rice-false-smut-balls-caused-by-villosiclava-virens-and-their-phytotoxic-and-cytotoxic-activities
#15
Weibo Sun, Ali Wang, Dan Xu, Weixuan Wang, Jiajia Meng, Jungui Dai, Yang Liu, Daowan Lai, Ligang Zhou
Ustilaginoidins are a class of bis-naphtho-γ-pyrones, typically produced by Villosiclava virens, the pathogen of the rice false smut (RFS), which has been one of the most destructive rice fungal diseases. Previously, we found that ustilaginoidins identified from the culture of V. virens on rice medium were less polar than those reported from the RFS balls in general. In this study, we reinvestigated the high-performance liquid chromatography with diode array detection and high-resolution mass spectrometry (HPLC-DAD-HRMS) profile of the ethyl acetate (EtOAc) extract of the RFS balls and found several interesting peaks that correspond to new ustilaginoidins...
June 28, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28534285/development-of-self-forming-doxorubicin-loaded-polymeric-depots-as-an-injectable-drug-delivery-system-for-liver-cancer-chemotherapy
#16
Pinunta Nittayacharn, Norased Nasongkla
The objective of this work was to develop self-forming doxorubicin-loaded polymeric depots as an injectable drug delivery system for liver cancer chemotherapy and studied the release profiles of doxorubicin (Dox) from different depot formulations. Tri-block copolymers of poly(ε-caprolactone), poly(D,L-lactide) and poly(ethylene glycol) named PLECs were successfully used as a biodegradable material to encapsulate Dox as the injectable local drug delivery system. Depot formation and encapsulation efficiency of these depots were evaluated...
July 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28515676/low-dose-dose-response-for-in-vitro-nrf2-are-activation-in-human-hepg2-cells
#17
Kenneth T Bogen
Kelch-like ECH-associated protein 1 (Keap1), nuclear factor erythroid 2-like factor 2-related factor 2 (Nrf2), and the antioxidant response element (ARE) are interacting components of a master regulatory signaling pathway that coordinates redox homeostasis, cytoprotective responses, and shifts in stem cell state. This study reexamined detailed dose-response (DR) data reported for in vitro Nrf2-ARE activation in human hepatoblastoma HepG2 cell lines containing either a ARE-bla or ARE-luc reporter at 12 different concentrations of each of 15 chemicals...
April 2017: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/28505536/design-synthesis-molecular-docking-and-cytotoxic-evaluation-of-novel-2-furybenzimidazoles-as-vegfr-2-inhibitors
#18
Mona A Abdullaziz, Heba T Abdel-Mohsen, Ahmed M El Kerdawy, Fatma A F Ragab, Mamdouh M Ali, Sherifa M Abu-Bakr, Adel S Girgis, Hoda I El Diwani
Inhibition of angiogenesis through inhibition of vascular endothelial growth factor receptor 2 (VEGFR-2) has been applied in cancer therapy because of its important role in promoting cancer growth and metastasis. In the presented study, a series of benzimidazol-furan hybrids was designed and synthesized through facile synthetic pathways. Evaluation of the synthesized compounds for their in vitro cytotoxic activity against breast (MCF-7) and hepatocellular (HepG2) carcinoma cell lines was performed. Two of the synthesized conjugates, 10b and 15, showed potent antiproliferative properties against MCF-7 cell line (IC50 = 21...
April 26, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28504115/protocatechuic-acid-inhibits-hepatitis-b-virus-replication-by-activating-erk1-2-pathway-and-down-regulating-hnf4%C3%AE-and-hnf1%C3%AE-in-vitro
#19
Xiao-Qing Dai, Wen-Tao Cai, Xiao Wu, Yong Chen, Feng-Mei Han
AIMS: Protocatechuic acid (PCA) is a phenolic compound found in many antiviral Chinese herbal medicines. HNF4α and HNF1α, the members of hepatocyte nuclear factor (HNF) family, play an important regulatory role in the gene transcription of hepatitis B virus (HBV). Previous studies found that PCA inhibited HBV antigen secretion and HBV DNA replication in HepG2.2.15 cells, but its anti-HBV mechanism has not been fully understood. We aim to illustrate the anti-HBV mechanism of PCA. MATERIALS AND METHODS: MTT was used to estimate cytotoxicity...
July 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28456034/synthesis-and-cytotoxicity-of-a-novel-series-of-saframycin-ecteinascidin-analogs-containing-tetrahydro-%C3%AE-carboline-moieties
#20
Xiangran Lu, Xuan Pan, Ying Yang, Ming Ji, Xiaoguang Chen, Zhiyan Xiao, Zhanzhu Liu
A novel bistetrahydrocarboline heptacyclic skeleton and its twenty derivatives were prepared from l-tryptophan through a 15-step stereospecific route. The cytotoxicities of these compounds were tested against six human cancer cell lines including HCT-116, HepG2, BGC-823, MCF-7, A2780, and HT-29. Most of the derivatives with amide side chain exhibited the IC50 values at the level of 10(-7) M, and a preliminary structure-activity relationship (SAR) was discussed. Both compound 30 with 2-pyridine amide side chain and compound 14 with phthalamide side chain showed the most potent and broad cytotoxicity towards all six cell lines with the IC50 values at the level of 10(-8) M...
April 24, 2017: European Journal of Medicinal Chemistry
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