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Jiezhang Mo, Derun Lin, Jingzhen Wang, Ping Li, Wenhua Liu
Zinc pyrithione (ZPT) is widely used as a substitute booster biocide for tributyltin and is also an additive to antidandruff shampoos and medical cosmetic products. ZPT and pyrithione have been detected in different environmental matrices and biota, suggesting that it may pose health threats to aquatic organisms and even humans. The present study used HepG2 cells, a human hepatoma cell line, to study the hepatotoxicity of ZPT (0.1-5.0 μM). ZPT treatment caused marked viability reduction and induced apoptosis depending on its dose used...
June 15, 2018: Ecotoxicology and Environmental Safety
Kim Min, Seung Cheol Jee, Jung-Suk Sung, Avinash A Kadam
Owing to the ubiquitous availability and simple biocatalysis, the anti-proliferative laccase holds enormous opportunities for anti-cancer applications. However, accessing efficient and specific (super-magnetically targetable) new delivery system for anti-proliferative laccase is vital step towards laccase based anti-cancer approach. Therefore, in this investigation, super-magnetized (Fe3 O4 ) and chitosan (CS) functionalized halloysite nanotubes (HNTs) (termed as Fe3 O4 -HNTs-CS) was facile synthesized. Further, laccase from Trametes versicolor was immobilized on Fe3 O4 -HNTs-CS (termed as Fe3 O4 -HNTs-CS-Lac)...
June 15, 2018: International Journal of Biological Macromolecules
Chuan Zhao, Mei Wang, Yu Liu, Yongjuan Liang, Li Han, Che Chen
Context: Previous studies have demonstrated that 3'-azido-3'-deoxythymidine (AZT) and arsenic trioxide (As2 O3 ), traditional chemotherapy agents, can synergically inhibit the growth of hepatocellular carcinoma cells. However, the molecular mechanisms underlying As2 O3 and AZT anti-hepatoma activity are unknown. Objective: This study aimed to investigate the role of early growth response protein 1 (Egr-1) in the process of As2 O3 combined with AZT inhibiting proliferation and inducing apoptosis of human hepatocellular carcinoma HepG2 cells, and explore the possible mechanism...
2018: OncoTargets and Therapy
Song Yi Lee, Jin Woo Choi, Jae-Young Lee, Dae-Duk Kim, Hyo-Cheol Kim, Hyun-Jong Cho
Doxorubicin (DOX)-loaded, hyaluronic acid-ceramide (HACE) nanoassembly-releasing poly(lactic-co-glycolic acid) (PLGA) microspheres (MSs) were developed for transarterial chemoembolization (TACE) therapy of liver cancer. DOX/HACE MSs with a mean diameter of 27 μm and a spherical shape were prepared based on the modified emulsification method. Their in vitro biodegradability in artificial biological fluids was observed. A more sustained drug release pattern was observed from DOX/HACE MS than from DOX MS at pH 7...
November 2018: Drug Delivery
Ning Li, Wen-Yu Xin, Bin-Rong Yao, Wei Cong, Chun-Hua Wang, Gui-Ge Hou
Ten novel symmetric 3,5-bis(arylidene)-4-piperidone derivatives (BAPs, 1-10) and fourteen dissymmetric BAPs (11-24) were synthesized and evaluated the cytotoxicity. All of the compounds have been screened for their anti-inflammatory activity characterized by evaluating their inhibitory effects on LPS-induced IL-6, TNF-α secretion. Among them, BAP 23 exhibits both the highest anti-inflammatory and anti-cancer properties. Western blot analysis showed that BAP 23 markedly reduced the levels of Bcl-2 but increased the levels of cleaved caspase-3and Bax...
June 12, 2018: European Journal of Medicinal Chemistry
Ana Juan-García, Mercedes Taroncher, Guillermina Font, María-José Ruiz
No abstract text is available yet for this article.
June 14, 2018: Food and Chemical Toxicology
Adileh Ayati, Tayebeh Oghabi Bakhshaiesh, Setareh Moghimi, Rezvan Esmaeili, Keivan Majidzadeh-A, Maliheh Safavi, Loghman Firoozpour, Saeed Emami, Alireza Foroumadi
A series of new coumarin-containing compounds 3a-l and 4a-c was designed and synthesized based on the chalcone-type 4-amino-5-cinnamoylthiazole scaffold 2, and screened for their in vitro anticancer and antioxidant activities. Representatively, the 2-thiomorpholinothiazole derivative 3k with IC50 values of 7.5-16.9 μg/ml demonstrated good cytotoxic effects against tested cell lines MCF-7, HepG2 and SW480. Further investigation by flow cytometric analysis confirmed that this compound induces apoptotic cell death in MCF-7 cells and cause G1-phase arrest in the cell cycle...
June 7, 2018: European Journal of Medicinal Chemistry
Zecheng Hu, Xiaocheng Cao, Yu Fang, Guoxing Liu, Chengzhi Xie, Ke Qian, Xiaohua Lei, Zhenyu Cao, Huihui Du, Xiangding Cheng, Xundi Xu
The malignant phenotype of the cells resulting from human liver cancer is driven by liver cancer stem-like cells (LCSLCs). Transient Receptor Potential Vanilloid-type 2 channel (TRPV2) contributes to the progression of different tumor types, including liver cancer. In the current study, the TRPV2 expression levels give rise to the effect on stemness in liver cancer cell lines. TRPV2 knockdown in HepG2 cells enhanced spheroid and colony formation, and expression levels of CD133, CD44 and ALDH1 whereas the opposite effects were observed in TRPV2 enforced expression in SMMC-7721 cells...
June 12, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Kalahe Hewage Iresha Nadeeka Madushani Herath, Jinhee Cho, Areum Kim, Tae Kil Eom, Ju-Sung Kim, Jae-Bum Kim, Yang Hoi Doh, Youngheun Jee
ETHNOPHARMACOLOGICAL RELEVANCE: Sasa quelpaertensis Nakai is an edible dwarf bamboo cultivated mainly in Jeju Island, South Korea and its leaf displays various health-promoting properties including antioxidant scavenging. AIM OF THE STUDY: In this study, we aimed at elucidating its hepatoprotective effect against alcohol-induced fatty liver. METHODS: In in vitro study, we evaluated the cytotoxicity and hepatoprotective effect of different solvent fractions (aqua, butanol, chloroform, ethyl acetate and hexane) of 80% EtOH extract of S...
June 12, 2018: Journal of Ethnopharmacology
Celia Fernández-Blanco, Luigi Elmo, Thomas Waldner, Maria-Jose Ruiz
Patulin (PAT), deoxynivalenol (DON) and toxin T-2 (T-2) are mycotoxins distributed worldwide in food and feed. Cytotoxicity of the three mycotoxins individually or in combination in human hepatocellular carcinoma (HepG2) cells was evaluated by MTT assay over 24, 48 and 72 h of exposure. The concentration ranges used were 0.625-15 μM for DON, 1.25-50 nM for T-2 and 0.45-7.5 μM for PAT. The IC50 values obtained ranged from 9.30 to 2.53 μM, from 33.69 to 44.37 nM and from 2.66 to 1.17 μM for DON, T-2 and PAT, respectively...
June 12, 2018: Food and Chemical Toxicology
Yingjie Shao, Dachuan Zhang, Xiaodong Li, Jing Yang, Lujun Chen, Zhonghua Ning, Yun Xu, Guohua Deng, Min Tao, Yibei Zhu, Jingting Jiang
BACKGROUND: It has been reported that B-cell-specific moloney leukemia virus insertion site 1 (Bmi-1) has important roles in various cancers, but its regulation through microRNAs (miRNAs) and its functions in hepatocellular carcinoma (HCC) remains unclear. METHODS: We investigated Bmi-1 expression and its prognostic significance in HCC by using tissue samples and The Cancer Genome Atlas (TCGA) datasets. The relationship between miRNAs and Bmi-1 was verified by bioinformatics prediction and immunofluorescence...
June 15, 2018: Molecular Pharmaceutics
Juan M Barajas, Ryan Reyes, Maria J Guerrero, Samson T Jacob, Tasneem Motiwala, Kalpana Ghoshal
Hepatocellular carcinoma (HCC) is the second leading cause of cancer-related deaths worldwide. Thus, a better understanding of molecular aberrations involved in HCC pathogenesis is necessary for developing effective therapy. It is well established that cancer cells metabolize energy sources differently to rapidly generate biomass. Glucose-6-phosphate-dehydrogenase (G6PD), the rate-limiting enzyme of the Pentose Phosphate Pathway (PPP), is often activated in human malignancies to generate precursors for nucleotide and lipid synthesis...
June 14, 2018: Scientific Reports
Qianqian Song, Renshu Zhang, Lei Lei, Xingyi Li
In the present study, we reported the generation of a molecular hydrogel of succinated paclitaxel (PTX-SA) by a self-hydrolytic strategy for potential local cancer chemotherapy. Upon self-hydrolysis of the ester bond of PTX-SA in phosphate-buffered saline (pH = 7.4) for 24 h, a PTX-SA supramolecular hydrogel formed spontaneously with a minimal gelation concentration of 0.25 wt%. The formed PTX-SA supramolecular hydrogel displayed a filamentous nanostructure, the nanofibers of which were typically several micrometers in length with a diameter of 10-15 nm...
August 1, 2018: Journal of Biomedical Nanotechnology
Zhen-Hui Wu, Xian Meng, Yong-Fang Ding, Yun-Ru Peng
This study aimed to investigate the inhibitory effect of total C-21 steroidal glycoside (TCSG) from Baishouwu on the proliferation, invasion and apoptosis of human hepatoma HepG2 cells in vitro and the relevant molecular mechanism. The experiment was divded into control group, TCSG groups (25, 60, 150 mg·L⁻¹) and positive control cisplatin group (1.33 mg·L⁻¹). Human hepatocyte L-02 cells and hepatoma HepG2 cells were treated with different concentrations of TCSG. Then, the inhibitory effect of TCSG on the proliferation of HepG2 cells was detected by CCK-8 method...
May 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Yanjing Wang, Yuanyuan Li
Hepatitis B virus (HBV) is associated with the development of a wide spectrum of liver diseases. The involvement of miRNAs in HBV replication is being gradually identified. Among these miRNAs, miR-146a expression was found to be positively correlated with HBV replication levels. However, the regulatory relationship between miR-146a and HBV replication is still unclear. In the present study, miR-146a was upregulated in HBV-expressing HepG2.2.15 cells compared with HepG2 cells. Overexpression of miR-146a or knockdown of Zinc finger E-box-binding homeobox 2 (ZEB2) promoted HBV replication and expression, while downregulation of miR-146a or overexpression of ZEB2 suppressed HBV replication and expression...
March 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Rongshuang Yuan, Xue Tao, Shuang Liang, Yan Pan, Li He, Jinghui Sun, Ju Wenbo, Xiangyan Li, Jianguang Chen, Chunmei Wang
AIM: Schisandra chinensis is a well-known traditional Chinese medicine used mainly as a recipe for hepatoprotection. Modern researches have revealed that the hepatoprotection is related to its lignans and crude polysaccharide. In this study, we examined the effect and mechanism of Schisandra chinensis acidic polysaccharide (SCAP) on the liver injury induced by ethanol. MAIN METHODS: SCAP was extracted with water extraction and ethanol precipitation. Liver injury models of both mice and HepG2 cells were produced by ethanol...
March 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Tomáš Smutný, Riina Harjumäki, Liisa Kanninen, Marjo Yliperttula, Petr Pávek, Yan-Ru Lou
Herbal medicines have been increasingly used in the last three decades. Despite their popularity, safety issues with herbal products need to be addressed. We performed a feasibility study of the toxic responses of human induced pluripotent stem cell-derived hepatocytes (iHep cells) to phytochemicals in comparison with hepatoblasoma-derived HepG2 cells and long-term human hepatocytes (LTHHs). The iHep cells expressed typical hepatocyte markers cytochrome P450 3A4 (CYP3A4), hepatocyte nuclear factor 4α, and albumin despite the expression of immature markers α-fetoprotein and cytokeratin 19...
June 11, 2018: Toxicology in Vitro: An International Journal Published in Association with BIBRA
Jiayao Yu, Yi Li, Tian Wang, Xiang Zhong
This study was conducted to investigate effect of N6-methyladenosine (m6A) RNA methylation on Heat shock proteins (HSPs) and dissect the profile of HSP RNA methylation. The results showed that m6A methyltransferases METTL3 mRNA was decreased in responses to heat shock stress in HepG2 cells, but m6A-specific binding protein YTHDF2 mRNA was upregulated in a manner similar to HSP70 induction. Immunofluorescence staining showed that the majority of YTHDF2 was present in the cytosol, however, nearly all YTHDF2 translocated from the cytosol into the nucleus after heat shock...
2018: PloS One
Biqiong Ren, Shudi Luo, Xuefei Tian, Zhichao Jiang, Guoying Zou, Fei Xu, Tieqiu Yin, Yiran Huang, Junlong Liu
Curcumin has been revealed to inhibit liver cancer, however, no studies have reported that the mechanism of curcumin's action on liver cancer is related to damage-associated molecular pattern (DAMP) molecules heat shock protein 70 (HSP70) and the toll-like receptor 4 (TLR4) signaling. This study aimed to investigate whether the activation of TLR4 signaling by HSP70 could be inhibited by curcumin, thus investigating the possible mechanism of curcumin in the inhibition of liver cancer. Western blotting was used to evaluate the expression of the HSP70 and TLR4 in HepG2 cells and ELISA was used to detect the concentration of HSP70 in cell culture medium...
June 11, 2018: Oncology Reports
Yueling Yuan, Peter Chiba, Tiange Cai, Richard Callaghan, Li Bai, Susan P C Cole, Yu Cai
In the present study, a lipid-polymer hybrid drug carrier system was developed to encapsulate psoralen (PSO), a multidrug resistance reversal agent and traditional Chinese medicine. Emphasis was focused the parameters that influence physicochemical characteristics, and then the drug release profile, stability, cytotoxicity and drug resistance reversal effect of the lipid-polymer hybrid nanoparticles (LPNs) were investigated. It was found that various formulation parameters affected NP size, drug loading (DL) and release characteristics...
June 14, 2018: Oncology Reports
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