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Melanoma natural compound

Ana R Neves, Marta Correia-da-Silva, Patrícia M A Silva, Diana Ribeiro, Emília Sousa, Hassan Bousbaa, Madalena Pinto
Natural flavonoids and xanthone glycosides display several biological activities, with the glycoside moiety playing an important role in the mechanism of action of these metabolites. Herein, to give further insights into the inhibitory activity on cell growth of these classes of compounds, the synthesis of four flavonoids ( 5 , 6 , 9 , and 10 ) and one xanthone ( 7 ) containing one or more acetoglycoside moieties was carried out. Acetyl groups were introduced using acetic anhydride and microwave irradiation...
May 5, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Magalli C B Lima E Silva, Danielle Bogo, Caroline A F Alexandrino, Renata T Perdomo, Patrícia de O Figueiredo, Pamela R do Prado, Fernanda R Garcez, Monica C T Kadri, Thalita V N Ximenes, Rita de Cassia A Guimarães, Ulana C Sarmento, Maria Lígia R Macedo
Campomanesia adamantium, a native species of the Brazilian Cerrado, is characterized as a natural source of phenolic compounds and has known potential anticancer activities. This study aimed to evaluate the chemical profile of dichloromethane extracts of pulp (DEGPU) and peel (DEGPE) from the fruits of C. adamantium and to identify compounds with antiproliferative effects in vitro against melanoma cells by sulforhodamine B (SRB) assay, apoptosis induction assay, caspase-3 activation assay, nitric oxide (NO) release in coculture of B16-F10 cells and murine peritoneal macrophages...
May 1, 2018: Journal of Medicinal Food
Alicja Kowalska, Krystian Pluta, Małgorzata Latocha
A synthesis of new 2,6-disubstituted and 2,6,8-trisubstituted 7-methylpurines as well as 8-substituted 3,7-dimethylxanthines containing a triple bond chain have been worked out. Purinethiones and xanthinethiones were converted into propynylthio derivatives, which were then further transformed via a Mannich reaction into aminobutynylthio derivatives (amine = pyrrolidine, piperidine, morpholine, and diethylamine). The products thus obtained represent various types of the purine and xanthine structure: 8-mono-, 2,6- and 6,8-dipropynylthio, 6- and 8-monoaminobutynylthio, 2,6- and 6,8-diaminobutynylthio derivatives...
2018: Medicinal Chemistry Research
Gui-Rong Hou, Kang Zeng, Hai-Mei Lan, Qi Wang
Ultraviolet (UV) radiation induces skin injury, and is associated with the development and formation of melanoma, which is a highly lethal form of skin cancer. Juglanin is a natural product, which is predominantly extracted from Polygonum aviculare, and is considered a functional component among its various compounds. Juglanin has been reported to exert marked protective effects in various diseases via the inhibition of inflammation and tumor cell growth. The present study aimed to explore the effects of juglanin on human skin cancer induced by UV and to reveal the underlying molecular mechanism...
March 29, 2018: International Journal of Molecular Medicine
Asaf A Qureshi, Eleanor G Zuvanich, Dilshad A Khan, Shahida Mushtaq, Neerupma Silswal, Nilofer Qureshi
BACKGROUND: Cancer is second most common cause of death in the United State. There are over 100 different types of cancer associated with different human organs, predominantly breast, liver, pancreas, prostate, colon, rectum, lung, and stomach. We have recently reported properties of pro-inflammatory (for treatment of various types of cancers), and anti-inflammatory (for cardiovascular disease and diabetes) compounds. The major problem associated with development of anticancer drugs is their lack of solubility in aqueous solutions and severe side effects in cancer patients...
April 2, 2018: Lipids in Health and Disease
Katherine A Turner, Jasmine M Manouchehri, Michael Kalafatis
Malignant melanoma is the most commonly diagnosed skin cancer associated with a high rate of metastasis. Low-stage melanoma is easily treated, but metastatic malignant melanoma is an extremely treatment-resistant malignancy with low survival rates. The application of recombinant human tumor necrosis factor-related apoptosis-inducing ligand (rhTRAIL) for the treatment of metastatic malignant melanoma holds considerable promise because of its selective proapoptotic activity towards cancer cells and not nontransformed cells...
March 28, 2018: Melanoma Research
Uttam K Roy, Nathalie Lavignac, Azizur M Rahman, Birthe V Nielsen
The search for potent and selective therapeutic agents is progressing by the study of natural compounds in plants. Plant-derived macromolecules are considered emerging therapeutic agents and an alternative to synthetic and small molecule drugs. Where it has long been known that plants possess medicinal properties, the compounds responsible for their action are in many cases still unknown: often only whole crude plant extracts or fractionated extracts are tested for the ability to inhibit common pathogens. Here, we present a fast protein liquid chromatography method for the separation of crude plant proteins...
March 16, 2018: Journal of Chromatographic Science
Guo Liu, Haihan Chu
Andrographolide (Andro), a natural compound isolated from Andrographis paniculata , has been demonstrated to have anticancer efficacy in several types of tumors. In the present study, the anticancer effects and mechanism of Andro in human malignant melanoma were investigated. Cell viability analysis was performed using an MTT assay and the effect of Andro on the cell cycle and apoptosis of human malignant melanoma cells was determined by flow cytometry. Western blot analysis was performed to evaluate the protein expression levels of human malignant melanoma cells following treatment with Andro...
April 2018: Oncology Letters
Christina Cheimonidi, Pinelopi Samara, Panagiotis Polychronopoulos, Eleni N Tsakiri, Theodora Nikou, Vassilios Myrianthopoulos, Theodore Sakellaropoulos, Vassilis Zoumpourlis, Emmanuel Mikros, Issidora Papassideri, Aikaterini Argyropoulou, Maria Halabalaki, Leonidas G Alexopoulos, Alexios-Leandros Skaltsounis, Ourania E Tsitsilonis, Nektarios N Aligiannis, Ioannis P Trougakos
Natural products are characterized by extreme structural diversity and thus they offer a unique source for the identification of novel anti-tumor agents. Herein, we report that the herbal substance acteoside being isolated by advanced phytochemical methods from Lippia citriodora leaves showed enhanced cytotoxicity against metastatic tumor cells; acted in synergy with various cytotoxic agents and it sensitized chemoresistant cancer cells. Acteoside was not toxic in physiological cellular contexts, while it increased oxidative load, affected the activity of proteostatic modules and suppressed matrix metalloproteinases in tumor cell lines...
June 2018: Redox Biology
Uwe Wollina, Cristiana Voicu, Serena Gianfaldoni, Torello Lotti, Katlein França, Georgi Tchernev
The search for natural products with benefits for health in general and of potential for treating human disease has gained wider interest world-wide. Here, we analyse current data on the microalga Arthrospira platensis (AP), that has been used in nutrition since ancient times in Fare East and African communities, for medical purposes with a focus on dermatology. Extracts of AP have been investigated in vitro and in vivo. The alga is rich in proteins, lipopolysaccharides and gamma-linolenic acid. AP extracts, phycocyanin compounds and polysaccharide calcium spirulan (Ca-SP) have been evaluated in various models...
January 25, 2018: Open Access Macedonian Journal of Medical Sciences
Lingying Tong, Shiyong Wu
Carnosol is a natural compound extracted from rosemary and sage, which has been demonstrated to have anti-inflammatory, anti-oxidant, and anti-cancer properties. In this report, we evaluated the therapeutic potential and elucidated the potential mechanism of action of carnosol in chemoprevention of ultraviolet B-light (UVB) induced non-melanoma skin cancer formation. Our data indicated that carnosol could partially reduce UVB-induced reactive oxygen species (ROS) elevation and thus reduce DNA damage. It could also reduce UVB-induced formation of cyclobutane pyrimidine dimers (CDP) in keratinocytes possibly through its ability in absorbing UVB radiation...
February 23, 2018: Scientific Reports
Ileana Cocan, Ersilia Alexa, Corina Danciu, Isidora Radulov, Atena Galuscan, Diana Obistioiu, Attila Alexandru Morvay, Renata Maria Sumalan, Mariana-Atena Poiana, Georgeta Pop, Cristina Adriana Dehelean
The current study aimed to investigate ethanolic extracts from the following medicinal plant species cultivated in western Romania: Melissa officinalis L., Rosmarinus officinalis L. (RO) and Salvia officinalis L. (SO). Antioxidant activity, total phenolics content and a profile of the main hydroxycinnamic acids (HCAs), including caffeic, ferulic, coumaric and rosmarinic acids, was determined for each plant extract. The in vitro antimicrobial activity against four bacterial strains ( Escherichia coli , Listeria -, Pseudomonas aeruginosa and Staphylococcus aureus ), and the effect on cell viability in two melanoma cell lines (B164A5 murine melanoma and A375 human melanoma) was also assessed...
February 2018: Experimental and Therapeutic Medicine
Asma Jabeen, Brandon Reeder, Soleiman Hisaindee, Salman Ashraf, Naeema Al Darmaki, Sinan Battah, Sulaiman Al-Zuhair
BACKGROUND: There is an increasing need to find natural bioactive compounds for pharmaceutical applications, because they have less harmful side effects compared to their chemical alternatives. Microalgae (MA) have been identified as a promising source for these bioactive compounds, and this work aimed to evaluate the anti-proliferative effects of semi-purified protein extracted from MA against several tumor cell lines. METHODS: Tested samples comprised MA cell extracts treated with cellulase and lysozyme, prior to extraction...
December 2017: Biomedical Journal
Sajal K Ghosh, Abhishek Ganta, Remco A Spanjaard
BACKGROUND: Chemotherapy and targeted therapies have made important strides in cancer treatment yet they often fail and new therapies are still needed. Here, we employed a phenotypic screen to identify and analyze the mechanism of action of novel small molecules that interfere with critical pathways involved in tumor cell growth, using chemoresistant A375 melanoma cells as a model. METHODS: Cell culture studies were performed in ATCC-recommended media. Compounds, and compound libraries were obtained from Boston University or purchased commercially...
February 8, 2018: Journal of Biomedical Science
Xue Li, Mingxia Yin, Xuedong Yang, Guang Yang, Xian Gao
Six previously undescribed flavonoids, 2S-5-methoxy-6-methyl-7,2'-dihydroxyflavanone, 5,7,2'-trihydroxy-6-methylflavone, 5,7,6'-trihydroxy-6-methylcoumaronochromone, 2,4',6'-trihydroxy-2'-methoxy-3'-methylchalcone, 6R,11-dimethoxy-9-hydroxyrotenoid, and 6R,11-dimethoxy-9-hydroxy-10-methylrotenoid, along with eight known flavonoids, including 2S-5-methoxy-6-methyl-7,4'-dihydroxyflavanone, not previously reported as a natural product, and seven rotenoids, boeravinone A, B, D, P, F, coccineone B, and mirabijalone E, were isolated from the ethyl acetate soluble fraction of Mirabilis himalaica roots...
February 5, 2018: Fitoterapia
Aïcha Sassi, Mouna Maatouk, Dorra El Gueder, Imen Mokdad Bzéouich, Saïda Abdelkefi-Ben Hatira, Saloua Jemni-Yacoub, Kamel Ghedira, Leila Chekir-Ghedira
Chrysin (5,7-dihydroxyflavone) is a natural and biologically active compound which has many biological activities as an anticancer agent. The current report is aimed at finding out whether the antitumor potential of chrysin, evidenced in vitro and in vivo, is linked or not to its effect on immunological mechanisms of melanoma-bearing mice. Chrysin-treated B16F10 cells were analyzed for their metabolic rate and apoptotic potentials. In vivo, BALB/c mice received a subcutaneous injection of B16F10 melanoma cells prior to antitumor treatments with chrysin (50 mg/kg b...
March 1, 2018: Chemico-biological Interactions
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
Helen L Alvarado, Ana C Calpena, Maria L Garduno-Ramirez, Raul Ortiz, Consolacion Melguizo, Jose M Prados, Beatriz Clares
BACKGROUND: Triterpenoids are an important class of natural bioactive products present in many medicinal plants. OBJECTIVE: The aim of present study is to investigate the antioxidant and anticarcinogenic potential of oleanolic acid (OA) and ursolic acid (UA) on B16 murine melanoma cell line isolated from Plumeria obtusa, free and loaded in a nanoemulsion (NEm) system. METHOD: The nanoemulsion was characterized by dynamic light scattering, transmission electron microscopy...
January 11, 2018: Anti-cancer Agents in Medicinal Chemistry
Claudia Florida Costea, Mihaela Dana Turliuc, Gabriela Dimitriu, Camelia Margareta Bogdănici, Anca MoŢoc, Mădălina Adriana Chihaia, Cristina Dancă, Andrei Cucu, Alexandru Cărăuleanu, Nicoleta Dumitrescu, Lucia Indrei, Şerban Turliuc
AIM: The conjunctival nevus affecting children and adolescents is a rare condition and the literature showed only few reports on this issue. The aim of this article is to determine the histopathological features for the correct diagnosis of an inflammatory juvenile compound nevus of the conjunctiva (IJCNC) in order to make the difference between this tumor and other lesions, like conjunctival melanoma or lymphoma, very similar from a gross point of view. This article is a clinical pathological study of two cases of IJCNC with particular histopathological characteristics, who were admitted at the 2nd Ophthalmology Clinic, "Prof...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Luciana Tartaglione, Angelita Gambuti, Paola De Cicco, Giuseppe Ercolano, Angela Ianaro, Orazio Taglialatela-Scafati, Luigi Moio, Martino Forino
Vitis vinifera cv Falanghina is an ancient grape variety of Southern Italy. A thorough phytochemical analysis of the Falanghina leaves was conducted to investigate its specialised metabolite content. Along with already known molecules, such as caftaric acid, quercetin-3-O-β-d-glucopyranoside, quercetin-3-O-β-d-glucuronide, kaempferol-3-O-β-d-glucopyranoside and kaempferol-3-O-β-d-glucuronide, a previously undescribed biflavonoid was identified. For this last compound, a moderate bioactivity against metastatic melanoma cells proliferation was discovered...
March 2018: Fitoterapia
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