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https://www.readbyqxmd.com/read/28731287/tricetin-suppresses-human-oral-cancer-cell-migration-by-reducing-matrix-metalloproteinase-9-expression-through-the-mitogen-activated-protein-kinase-signaling-pathway
#1
Tsung-Te Chung, Chun-Yi Chuang, Ying-Hock Teng, Ming-Ju Hsieh, Ji-Ching Lai, Yi-Ting Chuang, Mu-Kuan Chen, Shun-Fa Yang
Tricetin is a flavonoid derivative and a potent anti-inflammatory and anticancer agent. However, the molecular mechanism underlying the effects of tricetin on human oral cancer cell migration remains unclear. The cell migration and invasion abilities of three oral cancer cell lines (SCC-9, HSC-3, and OECM-1) were analyzed using Boyden chamber migration assays. Our results demonstrated that tricetin attenuates 12-O-tetradecanoylphorbol-13-acetate-induced SCC-9, HSC-3, and OECM-1 cell invasiveness and migration by reducing matrix metalloproteinase (MMP)-9 enzyme activity...
July 21, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28731136/mhy451-induces-cell-cycle-arrest-and-apoptosis-by-ros-generation-in-hct116-human-colorectal-cancer-cells
#2
Na Lam Hwang, Yong Jung Kang, Bokyung Sung, Seong Yeon Hwang, Jung Yoon Jang, Hye Jin Oh, Yu Ra Ahn, Do Hyun Kim, Su Jeong Kim, Sultan Ullah, Mohammad Akbar Hossain, Hyung Ryong Moon, Hae Young Chung, Nam Deuk Kim
Colorectal cancer (CRC) is the third most frequently diagnosed cancer and cause of cancer-related deaths. Despite advancements in conventional therapeutic approaches to CRC, most patients with CRC die of their disease. There is a need to develop novel therapeutic agents for this malignancy. Therefore, the present study aimed to examine the anticancer effects and elucidate the underlying mechanism of MHY451 in HCT116 human colorectal cancer cells. Treatment with MHY451 inhibited cell growth in a time- and concentration-dependent manner...
July 18, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28730515/selective-induction-of-dna-damage-g2-abrogation-and-mitochondrial-apoptosis-by-leaf-extract-of-traditional-medicinal-plant-wrightia-arborea-in-k562-cells
#3
T Lakshmipriya, T Soumya, P R Jayasree, P R Manish Kumar
Plants have proved to be an important source of anti-cancer drugs. Wrightia arborea, an Indian Ayurvedic medicinal plant, is used traditionally to treat a variety of ailments. This study evaluates the antiproliferative/apoptotic potential of Wrightia arborea leaf extracts, prepared in different organic solvents, on cancer cell lines. MTT assay, light and fluorescence microscopy, flow cytometry, DNA laddering, alkaline comet assay, and western blotting were some of the techniques used for evaluation. Combinations of camptothecin, either with CHK1 inhibitor-PD407824 or with W...
July 20, 2017: Protoplasma
https://www.readbyqxmd.com/read/28729694/paracrine-cyclooxygenase-2-activity-by-macrophages-drives-colorectal-adenoma-progression-in-the-apc-min-mouse-model-of-intestinal-tumorigenesis
#4
Mark A Hull, Richard J Cuthbert, C W Stanley Ko, Daniel J Scott, Elizabeth J Cartwright, Gillian Hawcroft, Sarah L Perry, Nicola Ingram, Ian M Carr, Alexander F Markham, Constanze Bonifer, P Louise Coletta
Genetic deletion or pharmacological inhibition of cyclooxygenase (COX)-2 abrogates intestinal adenoma development at early stages of colorectal carcinogenesis. COX-2 is localised to stromal cells (predominantly macrophages) in human and mouse intestinal adenomas. Therefore, we tested the hypothesis that paracrine Cox-2-mediated signalling from macrophages drives adenoma growth and progression in vivo in the Apc (Min/+) mouse model of intestinal tumorigenesis. Using a transgenic C57Bl/6 mouse model of Cox-2 over-expression driven by the chicken lysozyme locus (cLys-Cox-2), which directs integration site-independent, copy number-dependent transgene expression restricted to macrophages, we demonstrated that stromal macrophage Cox-2 in colorectal (but not small intestinal) adenomas from cLys-Cox-2 x Apc (Min/+) mice was associated with significantly increased tumour size (P = 0...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28721756/lycopene-ameliorates-experimental-colitis-in-rats-via-reducing-apoptosis-and-oxidative-stress
#5
Burcu Gul Baykalir, Dilek Aksit, Mustafa Selim Dogru, Arzu Hanım Yay, Hasan Aksit, Kamil Seyrek, Ahmet Attesahin
Inflammatory bowel disease (IBD) is an inflammatory disorder involving colitis. Lycopene is a naturally occurring carotenoid that has attracted considerable attention as a potential chemopreventive agent. The impact of lycopene on colitis is currently unknown. The aim of this study was to investigate the protective effects of lycopene in a rat model of colitis induced by acetic acid. The animals were randomly divided into the following five groups: the control group, colitis group, colitis + sulfasalazine group as a positive control group, colitis + lycopene and lycopene groups...
July 19, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/28720506/arecoline-activates-latent-transforming-growth-factor-%C3%AE-1-via-mitochondrial-reactive-oxygen-species-in-buccal-fibroblasts-suppression-by-epigallocatechin-3-gallate
#6
Yu-Ping Hsieh, King-Jean Wu, Hsin-Ming Chen, Yi-Ting Deng
BACKGROUND/PURPOSE: Oral submucous fibrosis (OSF) is a premalignant condition caused by the chewing of areca nut (AN). Transforming growth factor β (TGFβ) plays a central role in the pathogenesis of OSF. Connective tissue growth factor (CTGF or CCN2) and early growth response-1 (Egr-1) are important mediators in the fibrotic response to TGFβ in several fibrotic disorders including OSF. Arecoline, a major AN alkaloid, induced the synthesis of CCN2 and Egr-1 in human buccal mucosal fibroblast (BMFs)...
July 15, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28720100/effect-of-seasonal-malaria-chemoprevention-on-the-acquisition-of-antibodies-to-plasmodium-falciparum-antigens-in-ouelessebougou-mali
#7
Almahamoudou Mahamar, Djibrilla Issiaka, Amadou Barry, Oumar Attaher, Adama B Dembele, Tiangoua Traore, Adama Sissoko, Sekouba Keita, Bacary Soumana Diarra, David L Narum, Patrick E Duffy, Alassane Dicko, Michal Fried
BACKGROUND: Seasonal malaria chemoprevention (SMC) is a new strategy to reduce malaria burden in young children in Sahelian countries. It consists of the administration of full treatment courses of sulfadoxine-pyrimethamine plus amodiaquine to children at monthly intervals during the malaria season. However, it is not clear if there is a cumulative effect of SMC over time on acquisition of antibodies to malaria antigens. METHODS: A cross-sectional serosurvey was carried out 1 month after the last dose of SMC in 2016...
July 18, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28718725/ellagic-acid-enhances-apoptotic-sensitivity-of-breast-cancer-cells-to-%C3%AE-radiation
#8
Vidhula Ahire, Amit Kumar, Kaushala Prasad Mishra, Gauri Kulkarni
Herbal polyphenols have gained increased significance because of the promises they hold in the prevention and treatment of cancer. There exists an enormous opportunity for the screening and valuation of natural dietary compounds in the development of an effective chemopreventive drug and radiosensitizer that may be of practical use for patients undergoing cancer therapy. This study describes the effect of the flavonoid ellagic acid (EA) on gamma-irradiated human breast cancer MCF-7 cells in vitro when administered alone or in combination with radiation...
July 18, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28718724/black-raspberries-and-their-anthocyanin-and-fiber-fractions-alter-the-composition-and-diversity-of-gut-microbiota-in-f-344-rats
#9
Pan Pan, Vy Lam, Nita Salzman, Yi-Wen Huang, Jianhua Yu, Jianying Zhang, Li-Shu Wang
Natural compounds can alter the diversity and composition of the gut microbiome, potentially benefiting our health. We previously demonstrated chemopreventive effects of black raspberries (BRBs) in colorectal cancer, which is associated with gut dysbiosis. To investigate the effects of whole BRBs and their fractions on gut microbiota, we fed F-344 rats a control diet, 5% BRBs, the BRB anthocyanin fraction, or the BRB residue fraction for 6 weeks. Feces were collected at baseline and at weeks 3 and 6, and bacterial sequence counts were analyzed...
July 18, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28718684/role-of-gsk-3%C3%AE-in-regulation-of-canonical-wnt-%C3%AE-catenin-signaling-and-pi3-k-akt-oncogenic-pathway-in-colon-cancer
#10
Shelly Jain, Preety Ghanghas, Chandan Rana, S N Sanyal
Non-steroidal anti-inflammatory drugs (NSAIDs) are emerging as novel chemopreventive agents because of their ability in blocking cellular proliferation, and thereby tumor development, and also by promoting apoptosis. GSK-3β, a serine threonine kinase and a negative regulator of the oncogenic Wnt/β-catenin signaling pathway, plays a critical role in the regulation of oncogenesis. Celecoxib and etoricoxib, the two cyclooxygenase-2 (COX-2) selective NSAIDs, and Diclofenac, a preferential COX-2 inhibitory NSAID, had shown uniformly the chemopreventive and anti-neoplastic effects in the early stage of colon cancer by promoting apoptosis as well as an over-expression of GSK-3β while down-regulating the PI3-K/Akt oncogenic pathway...
July 18, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28714938/taxifolin-activates-the-nrf2-anti-oxidative-stress-pathway-in-mouse-skin-epidermal-jb6-p-cells-through-epigenetic-modifications
#11
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/28714901/selenium-containing-polysaccharide-protein-complex-in-se-enriched-ulva-fasciata-induces-mitochondria-mediated-apoptosis-in-a549-human-lung-cancer-cells
#12
Xian Sun, Yu Zhong, Hongtian Luo, Yufeng Yang
The role of selenium (Se) and Ulva fasciata as potent cancer chemopreventive and chemotherapeutic agents has been supported by epidemiological, preclinical, and clinical studies. In this study, Se-containing polysaccharide-protein complex (Se-PPC), a novel organoselenium compound, a Se-containing polysaccharide-protein complex in Se-enriched Ulva fasciata, is a potent anti-proliferative agent against human lung cancer A549 cells. Se-PPC markedly inhibited the growth of cancer cells via induction of apoptosis which was accompanied by the formation of apoptotic bodies, an increase in the population of apoptotic sub-G1 phase cells, upregulation of p53, and activation of caspase-3 in A549 cells...
July 16, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28711906/oxidative-stress-mediates-an-increased-formation-of-vascular-endothelial-growth-factor-in-human-hepatocarcinoma-cells-exposed-to-erlotinib
#13
Nataliya Rohr-Udilova, Florian Klinglmüller, Martha Seif, Hubert Hayden, Martin Bilban, Matthias Pinter, Klaus Stolze, Wolfgang Sieghart, Markus Peck-Radosavljevic, Michael Trauner
The tyrosine kinase inhibitor erlotinib targets the receptor of epidermal growth factor (EGFR) involved in development of hepatocellular carcinoma (HCC). Although inefficient in established HCC, erlotinib has been recently proposed for HCC chemoprevention. Since Cyp3A4 and Cyp1A2 enzymes metabolize erlotinib in the liver, the insights into the mechanisms of erlotinib effects on liver cells with maintained drug metabolizing activity are needed. We applied erlotinib to both commercially available (SNU398, Huh7) and established in Austria HCC cell lines (HCC-1...
July 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28711499/inhibition-of-il-6-stat3-signaling-in-human-cancer-cells-using-evista
#14
Wei Shi, Dan Yan, Chongqiang Zhao, Miaomiao Xiao, Yina Wang, Haiyan Ma, Tianshu Liu, Hua Qin, Cuntai Zhang, Chenglong Li, Jiayuh Lin, Sheng Li, Jiagao Lv, Li Lin
Persistent activation of IL-6/STAT3 signaling pathway has been frequently detected in human cancer including breast cancer, colon cancer, and multiple myeloma. IL-6/STAT3 can be a promising target for cancer prevent and treatment. However, few STAT3 inhibitors with high efficiency, specificity and safety is available for present clinical cancer therapy. Evista (Raloxifene·HCl) is known as selective estrogen receptor modulator which has been used for the prevention and treatment of osteoporosis and was approved for reducing the risk of invasive breast cancer...
July 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28711021/sensitizing-effects-of-an-organovanadium-compound-during-adjuvant-therapy-with-cyclophosphamide-in-a-murine-tumor-model
#15
Abhishek Basu, Arin Bhattacharjee, Prosenjit Ghosh, Amalesh Samanta, Sudin Bhattacharya
Various epidemiological and preclinical studies have already established the cancer chemopreventive potential of vanadium. In addition, recent studies have also indicated the abilities of vanadium-based compounds to induce cell death selectively towards malignant cells. Therefore, the objective of the present investigation is to improve the therapeutic efficacy and toxicity profile of an alkylating agent, cyclophosphamide, by the concurrent use of an organovanadium compound, oxovanadium(IV)-l-cysteine methyl ester complex (VC-IV)...
July 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28707198/platelet-targeted-pharmacologic-treatments-as-anti-cancer-therapy
#16
REVIEW
P Gresele, S Momi, M Malvestiti, M Sebastiano
Platelets act as multifunctional cells participating in immune response, inflammation, allergy, tissue regeneration, and lymphoangiogenesis. Among the best-established aspects of a role of platelets in non-hemostatic or thrombotic disorders, there is their participation in cancer invasion and metastasis. The interaction of many different cancer cells with platelets leads to platelet activation, and on the other hand platelet activation is strongly instrumental to the pro-carcinogenic and pro-metastatic activities of platelets...
July 13, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/28704451/targeting-of-x-linked-inhibitor-of-apoptosis-protein-and-pi3-kinase-akt-signaling-by-embelin-suppresses-growth-of-leukemic-cells
#17
Kirti S Prabhu, Kodappully S Siveen, Shilpa Kuttikrishnan, Ahmad Iskandarani, Magdalini Tsakou, Iman W Achkar, Lubna Therachiyil, Roopesh Krishnankutty, Aijaz Parray, Michal Kulinski, Maysaloun Merhi, Said Dermime, Ramzi M Mohammad, Shahab Uddin
The X-linked inhibitor of apoptosis (XIAP) is a viable molecular target for anticancer drugs that overcome apoptosis-resistance of malignant cells. XIAP is an inhibitor of apoptosis, mediating through its association with BIR3 domain of caspase 9. Embelin, a quinone derivative isolated from the Embelia ribes plant, has been shown to exhibit chemopreventive, anti-inflammatory, and apoptotic activities via inhibiting XIAP activity. In this study, we found that embelin causes a dose-dependent suppression of proliferation in leukemic cell lines K562 and U937...
2017: PloS One
https://www.readbyqxmd.com/read/28704214/bile-acids-upregulate-brca1-and-downregulate-estrogen-receptor-1-gene-expression-in-ovarian-cancer-cells
#18
Qunyan Jin, Olivier Noel, Mai Nguyen, Lionel Sam, Glenn S Gerhard
Two major risk factors for ovarian cancer include loss-of-function mutations in the BRCA1 (breast cancer 1, early onset) gene and aspects of estrogen metabolism. Modulation of the levels of the normal BRCA1 allele and estrogen receptor expression may therefore be a preventive strategy. Consensus binding motifs for the bile acid-responsive transcription factor farnesoid X receptor were identified in the BRCA1 and estrogen receptor 1 (ESR1) and estrogen receptor 2 (ESR2) genes, supported by chromatin immunoprecipitation sequencing data...
July 12, 2017: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28698862/antimutagenic-and-antioxidant-activities-of-thai-rice-brans
#19
Orapin Insuan, Arpamas Chariyakornkul, Yuwada Rungrote, Rawiwan Wongpoomchai
BACKGROUND: Rice bran is the outer layer of the rice grain, and contains high amounts of bioactive phytochemicals. Here, we investigated and compared chemopreventive properties of purple and white rice bran extracts. METHODS: Rice bran was extracted with dichloromethane and methanol. Chemical constituents in the extracts were analyzed by colorimetric assay and high performance liquid chromatography. The mutagenicity and antimutagenicity of the extracts were determined via the Salmonella mutation assay...
June 2017: Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28698806/epigallocatechin-3-gallate-enhances-er-stress-induced-cancer-cell-apoptosis-by-directly-targeting-parp16-activity
#20
Juanjuan Wang, Chenggang Zhu, Dan Song, Ruiqi Xia, Wenbo Yu, Yongjun Dang, Yiyan Fei, Long Yu, Jiaxue Wu
Poly(ADP-ribose) polymerases (PARPs) are ADP-ribosylating enzymes and play important roles in a variety of cellular processes. Most small-molecule PARP inhibitors developed to date have been against PARP1, a poly-ADP-ribose transferase, and suffer from poor selectivity. PARP16, a mono-ADP-ribose transferase, has recently emerged as a potential therapeutic target, but its inhibitor development has trailed behind. Here we newly characterized epigallocatechin-3-gallate (EGCG) as a potential inhibitor of PARP16...
2017: Cell Death Discovery
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