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https://www.readbyqxmd.com/read/29348836/vitexin-confers-hsf-1-mediated-autophagic-cell-death-by-activating-jnk-and-apol1-in-colorectal-carcinoma-cells
#1
Monika Bhardwaj, Souren Paul, Rekha Jakhar, Imran Khan, Ji In Kang, Ho Min Kim, Jong Won Yun, Seon-Jin Lee, Hee Jun Cho, Hee Gu Lee, Sun Chul Kang
Heat shock transcription factor-1 (HSF-1) guards the cancerous cells proteome against the alterations in protein homeostasis generated by their hostile tumor microenvironment. Contrasting with the classical induction of heat shock proteins, the pro-oncogenic activities of HSF-1 remains to be explored. Therefore, cancer's fragile proteostatic pathway governed by HSF-1 could be a potential therapeutic target and novel biomarker by natural compounds. Vitexin, a natural flavonoid has been documented as a potent anti-tumor agent on various cell lines...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29344638/garcinone-c-exerts-antitumor-activity-by-modulating-the-expression-of-atr-stat3-4e%C3%A2-bp1-in-nasopharyngeal-carcinoma-cells
#2
Yudui Xia, Xia Liu, Chunlin Zou, Shixiu Feng, Hongwei Guo, Yeguo Yang, Yong Lei, Jian Zhang, Yi Lu
Nasopharyngeal carcinoma (NPC) is one of the most common head and neck malignancies and is typically treated with radiotherapy and chemotherapy. Garcinone C, a natural compound isolated from Garcinia oblongifolia Champ., is a xanthone derivative with potential cytotoxic effects on certain cancers. However, there are limited studies regarding its effects on NPC cells, and its mechanism of action in NPC remains unknown. In the present study, we found that garcinone C significantly inhibited cell viability of the human NPC cell lines CNE1, CNE2, HK1 and HONE1...
January 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29340014/cymbopogon-citratus-and-camellia-sinensis-extracts-selectively-induce-apoptosis-in-cancer-cells-and-reduce-growth-of-lymphoma-xenografts-in-vivo
#3
Cory Philion, Dennis Ma, Ivan Ruvinov, Fadi Mansour, Christopher Pignanelli, Megan Noel, Ammar Saleem, John Arnason, Mark Rodrigues, Inderpal Singh, Jesse Ropat, Siyaram Pandey
Cancer cells are reported to have elevated levels of reactive oxygen species (ROS) and are highly dependent on cellular defense mechanisms against oxidative stress. Numerous nutraceuticals and natural polyphenolic compounds have a wide range of abilities to alter cellular redox states with potential implications in various diseases. Furthermore, therapeutic options for cancers are mostly nonselective treatments including genotoxic or tubulin-targeting compounds. Some of the natural extracts, containing multiple bioactive compounds, could target multiple pathways in cancer cells to selectively induce cell death...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339720/plumbagin-inhibits-the-proliferation-and-survival-of-esophageal-cancer-cells-by-blocking-stat3-plk1-akt-signaling
#4
Ying-Ya Cao, Jing Yu, Ting-Ting Liu, Kai-Xia Yang, Li-Yan Yang, Qun Chen, Feng Shi, Jia-Jie Hao, Yan Cai, Ming-Rong Wang, Wei-Hua Lu, Yu Zhang
Esophageal squamous cell carcinoma (ESCC) is one of the deadliest cancers, and it requires novel treatment approaches and effective drugs. In the present study, we found that treatment with plumbagin, a natural compound, reduced proliferation and survival of the KYSE150 and KYSE450 ESCC cell lines in a dose-dependent manner in vitro. The drug also effectively inhibited the viability of primary ESCC cells from fresh biopsy specimens. Furthermore, plumbagin-induced mitotic arrest and massive apoptosis in ESCC cells...
January 16, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29339119/targeting-of-stress-response-pathways-in-the-prevention-and-treatment-of-cancer
#5
REVIEW
Jaroslav Zelenka, Martina Koncošová, Tomáš Ruml
The hallmarks of tumor tissue are not only genetic aberrations but also the presence of metabolic and oxidative stress as a result of hypoxia and lactic acidosis. The stress activates several prosurvival pathways including metabolic remodeling, autophagy, antioxidant response, mitohormesis, and glutaminolysis, whose upregulation in tumors is associated with a poor survival of patients, while their activation in healthy tissue with statins, metformin, physical activity, and natural compounds prevents carcinogenesis...
January 12, 2018: Biotechnology Advances
https://www.readbyqxmd.com/read/29338429/study-of-aflatoxicosis-reduction-effect-of-alchornea-cordifolia-on-biomarkers-in-an-aflatoxin-b1-exposed-rats
#6
Jean-Baptiste Aholia Adépo, Pierre Manda, Jean Verdier Ngbé, Aïssata Diakité, Béatrice Tigori Sangaré, Sébastien Djédjé Dano
The toxicity of aflatoxins results in cancer and liver disease. Several natural substances such as plants exhibited their ability to inhibit the initiation of aflatoxin carcinogenesis. The aim of this study was to evaluate the effect of Alchornea cordifolia on biomarkers in an aflatoxin B1 (AFB1) exposed rats. The contents of polyphenols, flavonoids and the antioxidant activity of A. cordifolia ethanolic leaf extract (EELac) were assessed. Groups of rats were treated orally with a daily dose of a mixture of AFB1 at a dose of 150 μg/kg body weight and EELac (50, 100 and 300 mg/kg body weight) for 21 days...
January 17, 2018: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/29338036/static-magnetic-field-enhances-the-anticancer-efficacy-of-capsaicin-on-hepg2-cells-via-capsaicin-receptor-trpv1
#7
Wei-Ting Chen, Guan-Bo Lin, Shu-Hui Lin, Chueh-Hsuan Lu, Chih-Hsiung Hsieh, Bo-Lun Ma, Chih-Yu Chao
Static magnetic field (SMF) has shown some possibilities for cancer therapies. In particular, the combinational effect between SMF and anti-cancer drugs has drawn scientists' attentions in recent years. However, the underlying mechanism for the drug-specific synergistic effect is far from being understood. Besides, the drugs used are all conventional chemotherapy drugs, which may cause unpleasant side effects. In this study, our results demonstrate for the first time that SMF could enhance the anti-cancer effect of natural compound, capsaicin, on HepG2 cancer cells through the mitochondria-dependent apoptosis pathway...
2018: PloS One
https://www.readbyqxmd.com/read/29337925/plant-secondary-metabolites-as-anticancer-agents-successes-in-clinical-trials-and-therapeutic-application
#8
REVIEW
Ana M L Seca, Diana C G A Pinto
Cancer is a multistage process resulting in an uncontrolled and abrupt division of cells and is one of the leading causes of mortality. The cases reported and the predictions for the near future are unthinkable. Food and Drug Administration data showed that 40% of the approved molecules are natural compounds or inspired by them, from which, 74% are used in anticancer therapy. In fact, natural products are viewed as more biologically friendly, that is less toxic to normal cells. In this review, the most recent and successful cases of secondary metabolites, including alkaloid, diterpene, triterpene and polyphenolic type compounds, with great anticancer potential are discussed...
January 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29337896/caffeic-acid-and-metformin-inhibit-invasive-phenotype-induced-by-tgf-%C3%AE-1-in-c-4i-and-htb-35-siha-human-cervical-squamous-carcinoma-cells-by-acting-on-different-molecular-targets
#9
Malgorzata Tyszka-Czochara, Malgorzata Lasota, Marcin Majka
During the progression of epithelial cancer, the cells may lose epithelial markers and gain mesenchymal phenotype via Epithelial-Mesenchymal Transition (EMT). Such transformation of epithelial cancer cells to mesenchymal-like characteristic benefits plasticity and supports their ability to migrate. The aim of this study was to evaluate the influence of natural compound Caffeic Acid (CA) alone and in combination with antidiabetic drug Metformin (Met) on metastatic progression of two human cervical squamous cell cancer lines, C-4I and HTB-35/SiHa cells...
January 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29335190/phytochemistry-and-pharmacology-of-the-genus-leonurus-the-herb-to-benefit-the-mothers-and-more
#10
REVIEW
Rui-Han Zhang, Zhi-Ke Liu, Da-Song Yang, Xing-Jie Zhang, Han-Dong Sun, Wei-Lie Xiao
Plants belonging to the genus Leonurus, also named motherwort, are traditionally used for anti-gynecological disorder in East Asia, and for sedative in Europe. Chemical investigation of the genus Leonurus not only enriched the natural products library, but also enlarged the pharmacological application of this traditional herb. In this review, we systematically summarized the structures of 259 compounds isolated from the genus Leonurus, featured with 147 labdane diterpenoids. The reported bioactivity studies up to 2017 are presented in the second part, with the main focus on the isolated compounds and also concerning the extracts...
January 12, 2018: Phytochemistry
https://www.readbyqxmd.com/read/29333049/marine-derived-fungi-extracts-enhance-the-cytotoxic-activity-of-doxorubicin-in-nonsmall-cell-lung-cancer-cells-a459
#11
Bruno Castro-Carvalho, Alice A Ramos, Maria Prata-Sena, Fernanda Malhão, Márcia Moreira, Daniela Gargiulo, Tida Dethoup, Suradet Buttachon, Anake Kijjoa, Eduardo Rocha
Background: Drug resistance is a major concern in the current chemotherapeutic approaches and the combination with natural compounds may enhance the cytotoxic effects of the anticancer drugs. Therefore, this study evaluated the cytotoxicity of crude ethyl extracts of six marine-derived fungi - Neosartorya tsunodae KUFC 9213 (E1), Neosartorya laciniosa KUFC 7896 (E2), Neosartorya fischeri KUFC 6344 (E3), Aspergillus similanensis KUFA 0013 (E4), Neosartorya paulistensis KUFC 7894 (E5), and Talaromyces trachyspermum KUFC 0021 (E6) - when combined with doxorubicin (Dox), in seven human cancer cell lines...
December 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/29332583/eating-green-shining-light-on-the-use-of-dietary-phytochemicals-as-a-modern-approach-in-the-prevention-and-treatment-of-head-and-neck-cancers
#12
Linda L Eastham, Candace M Howard, Premalatha Balachandran, David S Pasco, Pier Paolo Claudio
Enthusiasm for the use of dietary bioactive compounds as chemopreventive agents and adjuvants for current therapies has increased laboratory research conducted on several types of cancers including Head and Neck Squamous Cell Carcinoma (HNSCC). The green chemoprevention movement is a modern approach to highlight healthy lifestyle changes that aim to decrease the incidence of HNSCC. A healthy diet can be an effective way to prevent the development of oral cancers. Discovery of the naturally occurring plant based compounds called phytochemicals has facilitated the development of new treatment strategies for patients that are at risk for, or have developed HNSCC...
January 12, 2018: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/29332353/aesculetin-6-7-dihydroxycoumarin-exhibits-potent-and-selective-antitumor-activity-in-human-acute-myeloid-leukemia-cells-thp-1-via-induction-of-mitochondrial-mediated-apoptosis-and-cancer-cell-migration-inhibition
#13
Jian Gong, Wei-Guo Zhang, Xiao-Fen Feng, Mei-Juan Shao, Chao Xing
PURPOSE: The main target of the present research was to examine the antitumor properties of aesculetin in human acute myeloid leukemia cancer cells (THP-1) and peripheral blood mono-nucleated cells (PBMCs) (used as normal cell line model) along with the determination of its effects on induction of apoptosis, inhibition of cancer cell migration and changes in Bcl-2/Bax protein expressions. METHODS: MTT colorimetric bioassay was performed to study the impact of this natural compound on cytotoxicity of both cell types...
November 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29332340/imperatorin-shows-selective-antitumor-effects-in-sgc-7901-human-gastric-adenocarcinoma-cells-by-inducing-apoptosis-cell-cycle-arrest-and-targeting-pi3k-akt-m-tor-signalling-pathway
#14
J U Am, W J Gong, Y Su, Z B Mou
PURPOSE: The main purpose of the present study was to determine the anticancer properties of imperatorin - a naturally occurring coumarin compound - against SGC-7901 human gastric adenocarcinoma cells and the mouse fibroblast cell line 3T3 (normal cell line). METHODS: Imperatorin effects on apoptosis induction, cell cycle phase distribution and PI3K/Akt/m-TOR signalling pathways were studied. MTT cell viability assay examined the compound's cytotoxic potential, while inverted phase contrast microscopy and fluorescence microscopy techniques were used to study morphological changes induced in SGC-7901 cells by imperatorin...
November 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29329808/structural-and-energetic-basis-for-the-molecular-recognition-of-dual-synthetic-vs-natural-inhibitors-of-egfr-her2
#15
Bello Martiniano, Saldaña-Rivero Lucia, Correa-Basurto José, García Benjamín, Sánchez-Espinosa Víctor Armando
Activation of EGFR starts by ligand binding at the extracellular domain which results in homo and heterodimerization, leading to phosphorylation, activation of downstream signaling pathways which upregulate expression of genes, proliferation and angiogenesis. Abnormalities in the expression of EGFR play a critical role in the development of different types of cancer. HER2 is the preferred heterodimerization partner for EGFR; this biological characteristic together with the high percentage of structural homology has been exploited in the design of dual synthetic inhibitors against EGFR/HER2...
January 9, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29329644/anticancer-carbazole-alkaloids-and-coumarins-from-clausena-plants-a-review
#16
REVIEW
Li Huang, Zhe-Ling Feng, Yi-Tao Wang, Li-Gen Lin
Pharmaceutical research has focused on the discovery and development of anticancer drugs. Clinical application of chemotherapy drugs is limited due to their severe side effects. In this regard, new naturally occurring anticancer drugs have gained increasing attention because of their potential effectiveness and safety. Fruits and vegetables are promising sources of anticancer remedy. Clausena (family Rutaceae) is a genus of flowering plants and includes several kinds of edible fruits and vegetables. Phytochemical and pharmacological studies show that carbazole alkaloids and coumarins from Clausena plants exhibit anticancer activity...
December 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/29329096/water-contamination-by-endocrine-disruptors-impacts-microbiological-aspects-and-trends-for-environmental-protection
#17
REVIEW
Caren Leite Spindola Vilela, João Paulo Bassin, Raquel Silva Peixoto
Hormone active agents constitute a dangerous class of pollutants. Among them, those agents that mimic the action of estrogens on target cells and are part of the group of endocrine-disruptor compounds (EDCs) are termed estrogenic EDCs, the main focus of this review. Exposure to these compounds causes a number of negative effects, including breast cancer, infertility and animal hermaphroditism. However, especially in underdeveloped countries, limited efforts have been made to warn people about this serious issue, explain the methods of minimizing exposure, and develop feasible and efficient mitigation strategies at different levels and in various environments...
January 9, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29323880/photoactivated-in-vitro-anticancer-activity-of-rhenium-i-tricarbonyl-complexes-bearing-water-soluble-phosphines
#18
Sierra C Marker, Samantha N MacMillan, Warren R Zipfel, Zhi Li, Peter C Ford, Justin J Wilson
Fifteen water-soluble rhenium compounds of the general formula [Re(CO)3(NN)(PR3)]+, where NN is a diimine ligand and PR3 is 1,3,5-triaza-7-phosphaadamantane (PTA), tris(hydroxymethyl)phosphine (THP), or 1,4-diacetyl-1,3,7-triaza-5-phosphabicylco[3.3.1]nonane (DAPTA), were synthesized and characterized by multinuclear NMR spectroscopy, IR spectroscopy, and X-ray crystallography. The complexes bearing the THP and DAPTA ligands exhibit triplet-based luminescence in air-equilibrated aqueous solutions with quantum yields ranging from 3...
January 11, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29321003/a-prototypical-non-malignant-epithelial-model-to-study-genome-dynamics-and-concurrently-monitor-micro-rnas-and-proteins-in-situ-during-oncogene-induced-senescence
#19
Eirini-Stavroula Komseli, Ioannis S Pateras, Thorbjørn Krejsgaard, Konrad Stawiski, Sophia V Rizou, Alexander Polyzos, Fani-Marlen Roumelioti, Maria Chiourea, Ioanna Mourkioti, Eleni Paparouna, Christos P Zampetidis, Sentiljana Gumeni, Ioannis P Trougakos, Dafni-Eleftheria Pefani, Eric O'Neill, Sarantis Gagos, Aristides G Eliopoulos, Wojciech Fendler, Dipanjan Chowdhury, Jiri Bartek, Vassilis G Gorgoulis
BACKGROUND: Senescence is a fundamental biological process implicated in various pathologies, including cancer. Regarding carcinogenesis, senescence signifies, at least in its initial phases, an anti-tumor response that needs to be circumvented for cancer to progress. Micro-RNAs, a subclass of regulatory, non-coding RNAs, participate in senescence regulation. At the subcellular level micro-RNAs, similar to proteins, have been shown to traffic between organelles influencing cellular behavior...
January 10, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29318401/synthesis-anti-microbial-activity-cytotoxicity-of-some-novel-substituted-5-3-1h-benzo-d-imidazol-2-yl-4-hydroxybenzyl-benzofuran-2-yl-phenyl-methanone-analogs
#20
Bhookya Shankar, Pochampally Jalapathi, Balabadra Saikrishna, Shaym Perugu, Vijjulatha Manga
BACKGROUND: There is a dire need for the discovery and development of new antimicrobial agents after several experiments for a better resistance of microorganisms towards antimicrobial agents become a serious health problem for a few years in the past. As benzimidazole possess various types of biological activities, it has been synthesized, in the present study, a new series of (5-(3-(1H-benzo[d]imidazol-2-yl)-4-hydroxybenzyl)benzofuran-2-yl)(phenyl)methanone analogs by using the condensation and screened for its in vitro antimicrobial activity and cytotoxicity...
January 9, 2018: Chemistry Central Journal
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