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https://www.readbyqxmd.com/read/29329420/pyrrolidine-dithiocarbamate-reverses-bcl-xl-mediated-apoptotic-resistance-to-doxorubicin-by-inducing-paraptosis
#1
Seok Soon Park, Dong Min Lee, Jun Hee Lim, Dongjoo Lee, Sang Jun Park, Hwan Myung Kim, Seonghyang Sohn, Gyesoon Yoon, Young Woo Eom, Seong-Yun Jeong, Eun Kyung Choi, Kyeong Sook Choi
Elevated Bcl-xL expression in cancer cells contributes to DOX resistance, leading to failure in chemotherapy. In addition, the clinical use of high-dose doxorubicin (DOX) in cancer therapy has been limited by issues with cardiotoxicity and hepatotoxicity. Here, we show that co-treatment with pyrrolidine dithiocarbamate (PDTC) attenuates DOX-induced apoptosis in Chang-L liver cells and human hepatocytes, but overcomes DOX resistance in Bcl-xL-overexpressing Chang-L cells and several hepatocellular carcinoma (HCC) cell lines with high Bcl-xL expression...
January 10, 2018: Carcinogenesis
https://www.readbyqxmd.com/read/29329083/a-label-free-electrochemical-system-for-comprehensive-monitoring-of-o-chlorophenol
#2
Xiaolin Zhu, Kexin Zhang, Nan Lu, Yangyang Yu, Xing Yuan, Jiunian Guan
o-Chlorophenol (OCP) is a priority pollutant that poses serious health threats to the public. The following study designs a simple electrochemical system to monitor the concentration and toxicity of OCP. This system was primarily characterized by the integration of both physicochemical and biological monitoring procedures that had a synergistic effect between the functionalized carbon nanotubes and rhodamine B. This resulted in excellent electrocatalytic activities toward OCP and cellular purine bases. The peak current of OCP was linear with concentrations ranging from 0...
January 4, 2018: Chemosphere
https://www.readbyqxmd.com/read/29328481/ttf1%C3%A2-np-induces-protective-autophagy-during-apoptosis-by-inhibiting-the-akt-mtor-pathway-and-activating-jnk-in-human-liver-cancer-cells
#3
Xuan Zhang, Meilan Zhang, Bin Xiao, Wenjun Jiao, Silin Zhang, Xuewu Zhang
TTF1‑NP is a flavonoid nanoparticle based on 5,2',4'‑trihydroxy‑6,7,5'‑trimethoxyflavone (TTF1), which is derived from the medicinal plant Sorbaria sorbifolia that grows in the Changbai Mountain. We previously demonstrated antitumor effects of TTF1‑NP in human hepatoma including induction of apoptosis and inhibition of angiogenesis, migration and invasion. Herein, we examined the effects of TTF1‑NP on autophagy and its relationship with apoptosis, and explored potential underlying mechanisms in human hepatoma cell lines...
January 5, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29328460/terrein-inhibits-migration-of-human-breast-cancer-cells-via-inhibition-of-the-rho-and-rac-signaling-pathways
#4
Anongnard Kasorn, Fabien Loison, Thaned Kangsamaksin, Suchada Jongrungruangchok, Mathurose Ponglikitmongkol
Breast cancer is the most common cancer in women worldwide. Progression and aggressiveness of breast cancer is usually associated with its migration and invasion abilities. Recently, natural products with potential anticancer activity have become attractive candidates for alternative treatment of cancer. A fungal metabolite, terrein, isolated from the Aspergillus terreus has been revealed to exhibit selective anticancer activity; although this molecule has a variety of biological activities. The inhibitory effect on cell proliferation in hepatoma, keratinocytes, and lung cancer cells was due to cell cycle arrest without induction of apoptosis...
January 4, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29326072/novel-1-4-naphthoquinone-derivatives-induce-apoptosis-via-ros-mediated-p38-mapk-akt-and-stat3-signaling-in-human-hepatoma-hep3b-cells
#5
Chang Liu, Gui-Nan Shen, Ying-Hua Luo, Xian-Ji Piao, Xue-Yuan Jiang, Ling-Qi Meng, Yue Wang, Yi Zhang, Jia-Ru Wang, Hao Wang, Wan-Ting Xu, Jin-Qian Li, Yang Liu, Yi-Qin Wu, Hu-Nan Sun, Ying-Hao Han, Mei-Hua Jin, Yu-Dong Cui, Nan-Zhu Fang, Cheng-Hao Jin
1,4-Naphthoquinone and its derivatives have shown some efficacy as therapeutic compounds for cancer and inflammation, though their clinical application is limited by their side-effects. To reduce the toxicity of these compounds and optimize their effects, we synthesized two 1,4-naphthoquinone derivatives-2-butylsulfinyl- 1,4-naphthoquinone (BSNQ) and 2-octylsulfinyl-1,4-naphthoquinone (OSNQ)-and investigated their effects and underlying mechanisms in hepatocellular carcinoma cells. BSNQ and OSNQ decreased cell viability and significantly induced apoptosis, accompanied by the accumulation of reactive oxygen species (ROS)...
January 8, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29325293/-expression-of-mir-212-and-mir-132-in-serum-of-patients-with-primary-liver-cancer-and-their-targeted-regulation-of-gp73
#6
M Sha, B Wang, L Xiao, J Ye, J Wang, Z Y Luan
Objective: To investigate the expression of miR-212 and miR-132 in the serum of patients with primary liver cancer and their targeted regulation of GP73. Methods: The patients with liver cancer, chronic hepatitis B, or liver cirrhosis who were hospitalized in Taizhou People's Hospital from January 2015 to December 2016 were enrolled, and healthy volunteers were also enrolled as controls. Quantitative real-time PCR was used to measure the serum levels of miR-212 and miR-132, and the association between the expression of serum miR-212 and miR-132 and the clinicopathological features of patients with liver cancer was analyzed...
December 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/29321480/domain-swapping-and-smyd1-interactions-with-the-pwwp-domain-of-human-hepatoma-derived-growth-factor
#7
Li-Ying Chen, Yen-Chieh Huang, Shih-Tsung Huang, Yin-Cheng Hsieh, Hong-Hsiang Guan, Nai-Chi Chen, Phimonphan Chuankhayan, Masato Yoshimura, Ming-Hong Tai, Chun-Jung Chen
The human hepatoma-derived growth factor (HDGF), containing the chromatin-associated N-terminal PWWP domain capable of binding the SMYD1 promoter, participates in various cellular processes and is involved in human cancers. We report the first crystal structures of the human HDGF PWWP domain (residues 1-100) in a complex with SMYD1 of 10 bp at 2.84 Å resolution and its apo form at 3.3 Å, respectively. The structure of the apo PWWP domain comprises mainly four β-strands and two α-helices. The PWWP domain undergoes domain swapping to dramatically transform its secondary structures, altering the overall conformation from monomeric globular folding into an extended dimeric structure upon DNA binding...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29321304/determinants-in-the-igv-domain-of-human-havcr1-tim-1-are-required-to-enhance-hepatitis-c-virus-entry
#8
Alla Kachko, Maria Isabel Costafreda, Iryna Zubkova, Jerome Jacques, Kazuyo Takeda, Frances Wells, Gerardo Kaplan, Marian E Major
Hepatitis C virus (HCV) is the leading cause of chronic hepatitis in humans. Several host molecules participate in HCV cell entry but this process remains unclear. The complete unraveling of the HCV entry process is important to further understand viral pathogenesis and develop therapeutics. The human hepatitis A virus (HAV) cellular receptor 1 (HAVCR1), CD365, also known as TIM-1, functions as a phospholipid receptor involved in cell entry of several enveloped viruses. Here, we studied the role of HAVCR1 in HCV infection...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29321086/microrna-511-inhibits-cellular-proliferation-and-invasion-in-colorectal-cancer-by-directly-targeting-hepatoma-derived-growth-factor
#9
Saifei He, Guangdong Wang, Jing Ni, Juhua Zhuang, Suiliang Zhuang, Guoyu Wang, Ying Ye, Wei Xia
Dysregulated microRNAs (miRNAs) expression is involved in the occurrence and development of colorectal cancer (CRC) through the regulation of various important physiological events. Hence, miRNAs may be used as effective targets for CRC treatment; however, this hypothesis warrants further investigation. MiRNA-511 (miR511) plays vital roles in the progression of different tumour types. However, the expression, exact role and the mechanisms underlying the regulation of colorectal carcinogenesis and progression by miR-511 remain poorly understood...
January 10, 2018: Oncology Research
https://www.readbyqxmd.com/read/29317237/antitumor-immunostimulatory-activity-of-polysaccharides-from-panax-japonicus-c-a-mey-roles-of-their-effects-on-cd4-t-cells-and-tumor-associated-macrophages
#10
Guangwen Shu, Shanqing Jiang, Jun Mu, Huifan Yu, Huan Duan, Xukun Deng
In this study, chemical properties of polysaccharides from rhizomes of Panax japonicus C. A. Mey (PSPJ) were investigated and the antitumor immunostimulatory activity of PSPJ was assessed in mice bearing H22 hepatoma cells. Chemical properties of PSPJ were determined by GC, FT-IR, 1H NMR and 13C NMR analysis. Furthermore, we showed that PSPJ repressed H22 tumor growth in vivo with undetectable toxic effects on tumor-bearing mice. PSPJ upregulated host thymus/spleen indexes and ConA/LPS-induced splenocyte proliferation...
January 6, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29316508/synthesis-and-biological-evaluation-of-naphthalimide-polyamine-conjugates-modified-by-alkylation-as-anticancer-agents-through-p53-pathway
#11
Fujun Dai, Haoying He, Xiaojuan Xu, Shuai Chen, Chaojie Wang, Chenyang Feng, Zhiyong Tian, Huanyang Dong, Songqiang Xie
In this study, a series of novel naphthalimide-polyamine conjugates modified by alkylation at the terminal of the polyamine chain were synthesized. These novel conjugates were evaluated for their anti-cancer activities. The results revealed that the length of the polyamine chain and the terminal alkyl group had influences on anticancer activities. Compound 3g was chosen to further study the anti-cancer mechanism and evaluate the anti-tumor efficacy in vivo. It induced intrinsic apoptosis and suppressed migration of hepatoma cells...
January 4, 2018: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29316037/development-of-a-recombinant-murine-tumor-model-using-hepatoma-cells-expressing-hepatitis-c-virus-hcv-non-structural-antigens
#12
K Young, K Haq, S MacLean, R Dudani, S M Elahi, R Gilbert, R Weeratna, L Krishnan
Hepatitis C virus (HCV) chronically infects 2-3% of the world's population, causing liver disease and cancer with prolonged infection. The narrow host range of the virus, being restricted largely to human hepatocytes, has made the development of a relevant infection and reliable model to evaluate the efficacy of vaccines a challenge. We have developed a novel approach to accomplish this by generating a murine hepatoma cell line stably expressing non-structural HCV antigens which can be used in vitro or in vivo to test HCV vaccine efficacies...
January 6, 2018: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/29312546/curcumin-downregulates-the-expression-of-snail-via-suppressing-smad2-pathway-to-inhibit-tgf-%C3%AE-1-induced-epithelial-mesenchymal-transitions-in-hepatoma-cells
#13
Meng-Ting Cao, Hui-Fang Liu, Zhi-Gang Liu, Ping Xiao, Jing-Jing Chen, Yuan Tan, Xiao-Xin Jiang, Zhi-Chao Jiang, Yu Qiu, Hong-Jun Huang, Qiu-Gui Zhang, Guan-Min Jiang
Hepatocellular carcinoma (HCC) remains the third cause of cancer-related mortality. Resection and transplantation are the only curative treatments available but are greatly hampered by high recurrence rates and development of metastasis, the initiation of cancer metastasis requires migration and invasion of cells, which is enabled by epithelial-mesenchymal transitions (EMT). TGF-β1 is a secreted protein that performs many cellular functions, including the control of cell growth, cell proliferation, cell differentiation and apoptosis...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29303513/in-vitro-modeling-of-hepatocellular-carcinoma-molecular-subtypes-for-anti-cancer-drug-assessment
#14
Hadassa Hirschfield, C Billie Bian, Takaaki Higashi, Shigeki Nakagawa, Tizita Z Zeleke, Venugopalan D Nair, Bryan C Fuchs, Yujin Hoshida
Tractable experimental model that accounts for inter-tumor molecular heterogeneity is a key element of anti-cancer drug development. Hepatocellular carcinoma is known to exhibit highly heterogeneous molecular aberrations across the tumors, including somatic genetic and epigenetic alterations. Previous studies showed that molecular tumor subtypes determined by transcriptome, as a comprehensive functional readout, are reproducibly observed across global patient populations irrespective of geographic and etiological variations...
January 5, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29300772/downregulated-expression-of-hepatoma-derived-growth-factor-inhibits-migration-and-invasion-of-prostate-cancer-cells-by-suppressing-epithelial-mesenchymal-transition-and-mmp2-mmp9
#15
Feilong Yang, Nengwang Yu, Hui Wang, Cong Zhang, Zhao Zhang, Yanxiang Li, Dawei Li, Lei Yan, Hainan Liu, Zhonghua Xu
Hepatoma-derived growth factor (HDGF) is commonly over-expressed and plays critical roles in the development and progression in a variety of cancers. It has previously been shown that HDGF is overregulated in prostate cancer cells compared to normal prostate cells, which is correlated with cellular migration and invasion of prostate cancer. Here, the molecular mechanisms of HDGF in prostate cancer is investigated. It is shown that HDGF knockdown reduces prostate cancer cellular migration and invasion in both androgen-sensitive LNCaP cells and androgen-insensitive DU145 and PC3 cells...
2018: PloS One
https://www.readbyqxmd.com/read/29296233/srebp-2-driven-transcriptional-activation-of-human-snd1-oncogene
#16
Sandra Armengol, Enara Arretxe, Leire Enzunza, Irati Llorente, Unai Mendibil, Hiart Navarro-Imaz, Begoña Ochoa, Yolanda Chico, María José Martínez
Upregulation of Staphylococcal nuclease and tudor domain containing 1 (SND1) is linked to cancer progression and metastatic spread. Increasing evidence indicates that SND1 plays a role in lipid homeostasis. Recently, it has been shown that SND1-overexpressing hepatocellular carcinoma cells present an increased de novo cholesterol synthesis and cholesteryl ester accumulation. Here we reveal that SND1 oncogene is a novel target for SREBPs. Exposure of HepG2 cells to the cholesterol-lowering drug simvastatin or to a lipoprotein-deficient medium triggers SREBP-2 activation and increases SND1 promoter activity and transcript levels...
December 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/29291014/antitumor-effects-of-regorafenib-and-sorafenib-in-preclinical-models-of-hepatocellular-carcinoma
#17
Maria Kissel, Sandra Berndt, Lukas Fiebig, Simon Kling, Qunsheng Ji, Qingyang Gu, Tina Lang, Frank-Thorsten Hafner, Michael Teufel, Dieter Zopf
The purpose of this study was to investigate the antitumor activity of regorafenib and sorafenib in preclinical models of HCC and to assess their mechanism of action by associated changes in protein expression in a HCC-PDX mouse model. Both drugs were administered orally once daily at 10 mg/kg (regorafenib) or 30 mg/kg (sorafenib), which recapitulate the human exposure at the maximally tolerated dose in mice. In a H129 hepatoma model, survival times differed significantly between regorafenib versus vehicle (p=0...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29288515/a-third-generation-oncolytic-herpes-simplex-virus-inhibits-the-growth-of-liver-tumors-in-mice
#18
Richi Nakatake, Masaki Kaibori, Yusuke Nakamura, Yoshito Tanaka, Hideyuki Matushima, Tadayoshi Okumura, Takashi Murakami, Yasushi Ino, Tomoki Todo, Masanori Kon
Multimodality therapies are used to manage patients with hepatocellular carcinoma (HCC), although advanced HCC is incurable. Oncolytic virus therapy is probably the next major breakthrough in cancer treatment. The third-generation oncolytic herpes simplex virus type 1 (HSV-1) T-01 kills tumor cells without damaging the surrounding normal tissues. Here we investigated the antitumor effects of T-01 on HCC and the host's immune response to HCC cells. The cytopathic activities of T-01 were tested in 14 human and one murine hepatoma cell lines in vitro...
December 30, 2017: Cancer Science
https://www.readbyqxmd.com/read/29286137/microrna-124a-inhibits-cell-proliferation-and-migration-in-liver-cancer-by-regulating-interleukin-11
#19
Liedao Yu, Shuo Wang, Xiangjin Lin, Yang Lu, Pengcheng Gu
Liver cancer is the sixth most common malignant tumour and ranks in the top three cancers with regard to mortality due to metastasis and postsurgical recurrence. It is significant to understand the mechanisms underlying liver cancer for diagnosis and treatment. Cumulative evidence suggests that the abnormal regulation of microRNAs (miRNAs/miRs) may contribute to the development and metastasis of cancer. miR‑124a acts as a tumour suppressor in osteosarcoma, endometrial carcinoma, prostate cancer, and glioblastoma...
December 27, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29286073/proteasome-inhibition-protects-against-diet-induced-gallstone-formation-through-modulation-of-cholesterol-and-bile-acid-homeostasis
#20
Eun-Ji Lee, Min Hee Kim, Ye-Ryung Kim, Joo-Won Park, Woo-Jae Park
Gallstone disease is one of the most prevalent and costly gastrointestinal disorders worldwide. Gallstones are formed in the biliary system by cholesterol secretions in bile, which result from excess cholesterol, a deficiency in bile salts or a combination of the two. The present study examined the effects of proteasome inhibition on gallstone formation using the proteasome inhibitors bortezomib (BT) and carfilzomib (CF). C57BL/6J mice were fed a lithogenic diet to generate gallstones and injected with BT or CF for 12 weeks...
December 15, 2017: International Journal of Molecular Medicine
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