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https://www.readbyqxmd.com/read/28339746/in-vitro-cytotoxic-and-ace-inhibitory-activities-of-promod-278p-hydrolysate-of-ovotransferrin-from-chicken-egg-white
#1
S H Moon, J H Lee, J H Kim, H-D Paik, D U Ahn
Peptides released from egg proteins via enzymatic hydrolysis show various bioactivities such as antimicrobial, antioxidant, antihypertensive, and immunomodulatory properties. The objective of this study was to investigate the cytotoxic and Angiotensin Converting Enzyme (ACE)-inhibitory activities of ovotransferrin and its promod 278P enzyme hydrolysate. Ovotransferrin from egg white was hydrolyzed using promod 278P at 45°C for 3 hours. Using the MTT assay, the cytotoxicity of ovotransferrin and promod 278P hydrolysate of ovotransferrin were evaluated in human cancer cell lines of various tissue origins...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339076/an-activatable-aptamer-based-fluorescence-probe-for-the-detection-of-hepg2-cells
#2
Zongqiang Lai, Juntao Tan, Ruirong Wan, Jie Tan, Zhenghua Zhang, Zixi Hu, Jieping Li, Wei Yang, Yiwei Wang, Yafeng Jiang, Jian He, Nuo Yang, Xiaoling Lu, Yongxiang Zhao
It is significant to develop a probe with sensitivity and specificity for the detection of cancer cells. The present study aimed to develop an 'activatable' aptamer-based fluorescence probe (AAFP) to detect cancer cells and frozen cancer tissue. This AAFP consisted of two fragments: aptamer TLS11a that targets HepG2 cells, and two short extending complementary DNA sequences with a 5'- and 3'-terminus that make the aptamer in hairpin structure a capable quencher to fluorophore. The ability of the AAFP to bind specifically to cancer cells was assessed using flow cytometry, fluorescence spectroscopy and fluorescence microscopy...
March 24, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28339022/cytochrome-p450-2e1-increases-the-sensitivity-of-hepatoma-cells-to-vitamin-k2
#3
Lu Li, Lu Wang, Rui Song, Guangliang Chen, Yanyan Liu
Although vitamin K2 (VK2) exhibits inhibitory effects on the viability of hepatoma cells, hepatoma cells are insensitive to VK2. Therefore, this investigation is an attempt to enhance the sensitivity of hepatoma cells to VK2. Our results showed that VK2 acted synergistically with ethanol (EtOH) to inhibit the viability of Smmc-7721 cells, mainly because cytochrome P450 2E1 (CYP2E1) was activated by EtOH. The synergistic effect of VK2 and EtOH was also observed in QGY-7703 cells, which also express CYP2E1. However, in HepG2 cells, which do not express CYP2E1, the synergistic effect of VK2 and EtOH was not observed...
March 24, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28338936/establishment-of-a-human-hepatocellular-cell-line-capable-of-maintaining-long-term-replication-of-hepatitis-b-virus
#4
Wan-Ling Yao, Sotaro Ikeda, Yuta Tsukamoto, Keiko Shindo, Yukie Otakaki, Main Qin, Yoshikazu Iwasawa, Fumihiko Takeuchi, Yuki Kaname, Yu-Chi Chou, Chungming Chang, Koichi Watashi, Takaji Wakita, Takeshi Noda, Hiroki Kato, Takashi Fujita
Hepatitis B virus is a virus whose replication cycle cannot be completely reproduced using cultured cell lines. Here, we report an engineered cell line capable of supporting the complete HBV life cycle. We generated HepG2 cells overexpressing HBV entry receptor human NTCP, and defective in RIG-I-like receptor signaling, by knocking down the IPS-1 adaptor molecule. The resultant NtG20.i7 cells were susceptible to HBV, and its replication was detectable at 14 days post-infection and persisted for at least 35 days with a gradual increase of HBc expression...
March 11, 2017: International Immunology
https://www.readbyqxmd.com/read/28338198/the-expression-of-sirt3-in-primary-hepatocellular-carcinoma-and-the-mechanism-of-its-tumor-suppressing-effects
#5
Y Liu, Y-L Liu, W Cheng, X-M Yin, B Jiang
OBJECTIVE: To observe the SIRT 3 expression in primary hepatocellular carcinoma (HCC), and then establish the eukaryotic expression vector of SIRT3 to observe the proliferation and apoptosis of pZsGreen-c1-SIRT3 HepG2 cells. Furthermore, we explored the mechanism of SIRT3 in inhibiting HCC. PATIENTS AND METHODS: Immunohistochemistry was used to detect the expression of SIRT3 in the tumor tissue and para-tumor tissue in 32 patients with HCC and the normal liver tissue in 10 patients...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28338141/structurally-related-hydrazone-based-metal-complexes-with-different-antitumor-activities-variably-induce-apoptotic-cell-death
#6
Dominik A Megger, Kristin Rosowski, Christian Radunsky, Jutta Kösters, Barbara Sitek, Jens Müller
Three new complexes bearing the tridentate hydrazone-based ligand 2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)pyridine (L) were synthesized and structurally characterized. Biological tests indicate that the Zn(ii) complex [ZnCl2(L)] is of low cytotoxicity against the hepatocellular carcinoma cell line HepG2. In contrast, the Cu(ii) and Mn(ii) complexes [CuCl2(L)] and [MnCl2(L)] are highly cytotoxic with EC50 values of 1.25 ± 0.01 μM and 20 ± 1 μM, respectively. A quantitative proteome analysis reveals that treatment of the cells with the Cu(ii) complex leads to a significantly altered abundance of 102 apoptosis-related proteins, whereas 38 proteins were up- or down-regulated by the Mn(ii) complex...
March 24, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28338113/antiproliferative-and-apoptotic-effects-of-lidocaine-on-human-hepatocarcinoma-cells-a-preliminary-study
#7
Ancuta Jurj, Ciprian Tomuleasa, Tiberiu T Tat, Ioana Berindan-Neagoe, Stefan V Vesa, Daniela C Ionescu
BACKGROUND AND AIMS: It is now well documented that certain anesthetic techniques may influence long term outcome in cancer patients undergoing surgery. More recently, local anesthetics proved certain antiproliferative effects in cancer cells. In our study, we aimed to investigate if lidocaine has antiproliferative effects in human hepatocarcinoma cells and to identify possible mechanisms of these effects. METHODS: We investigated the inhibitory effect of different concentrations of lidocaine on the proliferation of cultured HepG2 human hepatocarcinoma cells and LX2 normal liver fibroblasts...
March 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/28338061/heteroleptic-copper-i-complexes-of-scorpionate-bis-pyrazolyl-carboxylate-ligand-with-auxiliary-phosphine-as-potential-anticancer-agents-an-insight-into-cytotoxic-mode
#8
Rais Ahmad Khan, Mohammad Usman, Rajakumar Dhivya, Perumalsamy Balaji, Ali Alsalme, Hamad AlLohedan, Farukh Arjmand, Khalid AlFarhan, Mohammad Abdulkader Akbarsha, Fabio Marchetti, Claudio Pettinari, Sartaj Tabassum
New copper(I) complexes [CuCl(PPh3)(L)] (1: L = LA = 4-carboxyphenyl)bis(3,5-dimethylpyrazolyl)methane; (2: L = LB = 3-carboxyphenyl)bis(3,5-dimethylpyrazolyl)methane) were prepared and characterised by elemental analysis and various spectroscopic techniques such as FT-IR, NMR, UV-Vis, and ESI-MS. The molecular structures of complexes 1 and 2 were analyzed by theoretical B3LYP/DFT method. Furthermore, in vitro DNA binding studies were carried out to check the ability of complexes 1 and 2 to interact with native calf thymus DNA (CT-DNA) using absorption titration, fluorescence quenching and circular dichroism, which is indicative of more avid binding of the complex 1...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337887/up-regulation-of-mir-888-5p-in-hepatocellular-carcinoma-cell-lines-and-its-effect-on-malignant-characteristics-of-cells
#9
E Hao, J Yu, S Xie, W Zhang, G Wang
MicroRNA (miRNA) expression has been linked to the molecular pathogenesis of hepatocellular carcinoma (HCC). The aberrant expression of miRNA is involved in the processes of tumorigenesis and cancer progression. According to the latest research, miR-888-5p is associated with strong cancer-promoting effect. For instance, miR-888-5p is up-regulated in prostate cancer and breast cancer. Nevertheless, the role of miR-888-5p in HCC has not been investigated to date. In this study, we found that miR-888-5p levels in four HCC cell lines (SMMC7721, HepG2, Huh-7 and Bel7402) were significantly up-regulated compared with human hepatocyte cell line (HHL-5)...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337300/mutation-of-mir-21-targets-endogenous-lipoprotein-receptor-related-protein-6-and-nonalcoholic-fatty-liver-disease
#10
Chang-Ping Li, Hong-Jue Li, Jiao Nie, Xia Chen, Xian Zhou
Nonalcoholic fatty liver disease (NAFLD) is a chronic disorder characterized by hepatic fat accumulation and abnormal lipid metabolism. Although miR-21 has been implicated in nonalcoholic fatty liver disease, it is unknown whether miR-21 could function as a therapeutic target. Here, we perform transfection analysis of miR-21 mimic or control mimic to evaluate the effects of miR-21 expression levels on human HepG2 nonalcoholic fatty liver cells. We used siRNA techniques to knock down miR-21 in HepG2 and control 293T cell lines, and then monitored lipid production and the expression levels of genes involved in lipid metabolism...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28336408/synthesis-properties-antitumor-and-antibacterial-activity-of-new-pt-ii-and-pd-ii-complexes-with-2-2-dithiobis-benzothiazole-ligand
#11
Simona Rubino, Rosalia Busà, Alessandro Attanzio, Rosa Alduina, Vita Di Stefano, Maria Assunta Girasolo, Santino Orecchio, Luisa Tesoriere
Mono- and binuclear Pt(II) and Pd(II) complexes with 2,2'-dithiobis(benzothiazole) (DTBTA) ligand are reported. [Pt(DTBTA)(DMSO)Cl]Cl∙CHCl3 (1) and [Pd2(µ-Cl)2(DTBTA)2]Cl2 (2) have been synthesized and structurally characterized by elemental analysis, IR, (1)H and (13)C NMR spectroscopy, MS spectrometry and the content of platinum and palladium was determined using a flame atomic spectrometer. Two different coordination modes of 1 and 2 complexes were found; in both complexes, the coordination of Pt(II) and Pd(II) ions involves the N(3) atoms of the ligand but the binuclear complex 2, is a cis-chloro-bridged palladium complex...
March 9, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28336091/altered-cellular-metabolism-of-hepg2-cells-caused-by-microcystin-lr
#12
Junguo Ma, Yiyi Feng, Siyu Jiang, Xiaoyu Li
This study aimed to evaluate the possible effects of microcystin-LR (MC-LR) exposure on the metabolism and drug resistance of human hepatocellular carcinoma (HepG2) cells. For this purpose, we first conducted an experiment to make sure that MC-LR could penetrate the HepG2 cell membrane effectively. The transcriptional levels of phase I (such as CYP2E1, CYP3A4, and CYP26B1) and phase II (such as EPHX1, SULTs, and GSTM) enzymes and export pump genes (such as MRP1 and MDR1) were altered by MC-LR-exposure for 24 h, indicating that MC-LR treatment may destabilize the metabolism of HepG2 cells...
March 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28335571/3-substituted-n-benzylpyrazine-2-carboxamide-derivatives-synthesis-antimycobacterial-and-antibacterial-evaluation
#13
Lucia Semelková, Ondřej Janďourek, Klára Konečná, Pavla Paterová, Lucie Navrátilová, František Trejtnar, Vladimír Kubíček, Jiří Kuneš, Martin Doležal, Jan Zitko
A series of substituted N-benzyl-3-chloropyrazine-2-carboxamides were prepared as positional isomers of 5-chloro and 6-chloro derivatives, prepared previously. During the aminolysis of the acyl chloride, the simultaneous substitution of chlorine with benzylamino moiety gave rise to N-benzyl-3-(benzylamino)pyrazine-2-carboxamides as side products, in some cases. Although not initially planned, the reaction conditions were modified to populate this double substituted series. The final compounds were tested against four mycobacterial strains...
March 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28334792/gwas-identifies-population-specific-new-regulatory-variants-in-fut6-associated-with-plasma-b12-concentrations-in-indians
#14
Suraj S Nongmaithem, Charudatta V Joglekar, Ghattu V Krishnaveni, Sirazul A Sahariah, Meraj Ahmad, Swetha Ramachandran, Meera Gandhi, Harsha Chopra, Anand Pandit, Ramesh D Potdar, Caroline Hd Fall, Chittaranjan S Yajnik, Giriraj R Chandak
Vitamin B12 is an important cofactor in one-carbon metabolism whose dysregulation is associated with various clinical conditions. Indians have a high prevalence of B12 deficiency but little is known about the genetic determinants of circulating B12 concentrations in Indians. We performed a genome-wide association study in 1001 healthy participants in the Pune Maternal Nutrition Study (PMNS), replication studies in 3418 individuals from other Indian cohorts and by meta-analysis identified new variants, rs3760775 (p = 1...
February 27, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28334689/design-characterization-and-in-vitro-evaluation-of-linalool-loaded-solid-lipid-nanoparticles-as-potent-tool-in-cancer-therapy
#15
Boris Rodenak-Kladniew, German A Islan, Margarita G de Bravo, Nelson Durán, Guillermo R Castro
Linalool (LN) is a monoterpene found in essential oils of plants and herbs that produces multiple effects on the mevalonate pathway and interesting antiproliferative activity in cancer cells. However, due to its poor aqueous solubility, an efficient vehicle is needed to improve its administration and bioavailability in physiological media. LN encapsulation in solid lipid nanoparticles (SLN) with different compositions was explored and in vitro tested in two cancer cell lines. SLN of myristyl myristate (MM), cetyl esters (SS) and cetyl palmitate (CP) were prepared by sonication in the presence of Pluronic(®)F68 as surfactant...
March 9, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28334655/morpholine-or-methylpiperazine-and-salicylaldimine-based-heteroleptic-square-planner-platinum-ii-complexes-in%C3%A2-vitro-anticancer-study-and-growth-retardation-effect-on-e-%C3%A2-coli
#16
Faiz-Ur Rahman, Amjad Ali, Inam Ullah Khan, Hong-Quan Duong, Shang-Bo Yu, Yue-Jian Lin, Hui Wang, Zhan-Ting Li, Dan-Wei Zhang
Morpholine and methylpiperazine are among the most important structural parts of different drugs including organic chemotherapeutic agents. In the current study we incorporated these entities as co-ligand and a series of structurally related mono- and di-metallic square planner Pt(II) complexes (Pt(II)(salicylaldimine)(morpholine)Cl C1a-C3a, Pt(II)(salicylaldimine) (methylpiperazine)Cl C1b-C3b, di-metallic Pt(II)2(bis-salicylaldimine)(morpholine)2Cl2C4a and Pt(II)2(bis-salicylaldimine)(methylpiperazine)2Cl2C4b were prepared...
March 18, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28334654/synthesis-and-biological-evaluation-of-a-new-series-of-benzimidazole-derivatives-as-antimicrobial-antiquorum-sensing-and-antitumor-agents
#17
N S El-Gohary, M I Shaaban
New benzimidazole derivatives were synthesized and assessed for antimicrobial efficacy toward Escherichia coli, Bacillus cereus, Staphylococcus aureus, Candida albicans and Aspergillus fumigatus 293. Results indicated that compounds 3c and 3n have promising activity toward S. aureus, whereas 3i exhibited remarkable efficacy toward B. cereus. Moreover, compound 3c was proved to be the most active antifungal analog toward C. albicans. On the other hand, 3n displayed the highest activity against A. fumigatus 293...
March 14, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28334044/in-vitro-and-in-vivo-evaluation-of-docetaxel-loaded-stearic-acid-modified-bletilla-striata-polysaccharide-copolymer-micelles
#18
Qingxiang Guan, Guangyuan Zhang, Dandan Sun, Yue Wang, Kun Liu, Miao Wang, Cheng Sun, Zhuo Zhang, Bingjin Li, Jiayin Lv
Bletilla striata polysaccharides (BSPs) have been used in pharmaceutical and biomedical industry, the aim of the present study was to explore a BSPs amphiphilic derivative to overcome its application limit as poorly water-soluble drug carriers due to water-soluble polymers. Stearic acid (SA) was selected as a hydrophobic block to modify B. striata polysaccharides (SA-BSPs). Docetaxel (DTX)-loaded SA-BSPs (DTX-SA-BSPs) copolymer micelles were prepared and characterized. The DTX release percentage in vitro and DTX concentration in vivo was carried out by using high performance liquid chromatography...
2017: PloS One
https://www.readbyqxmd.com/read/28334043/cc-223-blocks-mtorc1-c2-activation-and-inhibits-human-hepatocellular-carcinoma-cells-in-vitro-and-in-vivo
#19
Zichen Xie, Jiqin Wang, Mei Liu, Deshan Chen, Chao Qiu, Keyu Sun
Hepatocellular carcinoma (HCC) is a leading cause of cancer-related human mortalities. Over-activation of mammalian target of rapamycin (mTOR) is important for HCC tumorigenesis and progression. The current study assessed the potential anti-HCC activity by a novel mTOR kinase inhibitor, CC-223. We demonstrate that CC-223, at nM concentrations, induced profound cytotoxic and anti-proliferative activities against established HCC cell lines (HepG2, KYN-2 and Huh-7) and primary human HCC cells. Meanwhile, CC-223 activated caspase-3/-9 and apoptosis in the above HCC cells...
2017: PloS One
https://www.readbyqxmd.com/read/28333142/hydrogen-sulfide-promotes-autophagy-of-hepatocellular-carcinoma-cells-through-the-pi3k-akt-mtor-signaling-pathway
#20
Shanshan S Wang, Yuhan H Chen, Ning Chen, Lijun J Wang, Dexi X Chen, Honglei L Weng, Steven Dooley, Huiguo G Ding
Hydrogen sulfide (H2S), in its gaseous form, plays an important role in tumor carcinogenesis. This study investigated the effects of H2S on the cell biological functions of hepatocellular carcinoma (HCC). HCC cell lines, HepG2 and HLE, were treated with NaHS, a donor of H2S, and rapamycin, a classic autophagy inducer, for different lengths of time. Western blotting, immunofluorescence, transmission electron microscopy (TEM), scratch assay, CCK-8 and flow cytometric analysis were carried out to examine the effects of H2S on HCC autophagy, cell behavior and PI3K/Akt/mTOR signaling...
March 23, 2017: Cell Death & Disease
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