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https://www.readbyqxmd.com/read/29328434/chemical-conversion-of-human-lung-fibroblasts-into-neuronal-cells
#1
Xiao-Yu Wan, Li-Yun Xu, Bing Li, Qiu-Hong Sun, Qiu-Liang Ji, Dong-Dong Huang, Lan Zhao, Yong-Tao Xiao
It has been previously reported that human embryonic fibroblasts and mouse embryonic fibroblasts can be converted into neuronal cells using chemical agents, along with forced expression specific transcriptional factors. However, the materials required for reprogramming in these approaches presents major technical difficulties and safety concerns. The current study investigated whether a cocktail of small molecules can convert human lung fibroblast cells into neurons. The small molecules valproic acid, CHIR99021, DMH1, Repsox, forskolin, Y‑27632 and SP600125 (VCHRFYS) were used to induce MRC‑5 cells into neuronal cells in vitro...
January 10, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29323491/g-quadruplex-identification-in-the-genome-of-protozoan-parasites-points-to-naphthalene-diimide-ligands-as-new-antiparasitic-agents
#2
Efres Belmonte-Reche, Marta Martínez-García, Aurore Guédin, Michela Zuffo, Matilde Arévalo-Ruiz, Filippo Doria, Jenny Campos-Salinas, Marjorie Maynadier, Jose-Juan Lopez-Rubio, Mauro Freccero, Jean-Louis Mergny, Jose María Perez-Victoria, Juan Carlos Morales
G-quadruplexes (G4) are DNA secondary structures which take part in the regulation of gene expression. Putative G4 forming sequences (PQS) have been reported in mammals, yeast, bacteria and viruses. Here, we present PQS searches on the genomes of T. brucei, L. major and P. falciparum. We found telomeric sequences and new PQS motifs. Biophysical experiments showed that EBR1, a 29 nucleotide long highly repeated PQS in T. brucei, forms a stable G4 structure. G4 ligands based on carbohydrate conjugated naphthalene diimides (carb-NDIs) which bind G4's including hTel, could bind EBR1 with selectivity versus dsDNA...
January 11, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29315794/overexpression-of-long-non-coding-rna-h19-protects-lung-fibroblasts-from-lps-induced-injury-by-targeting-mir-181a-and-runx2-via-activation-of-notch-and-jnk-pathways
#3
Lin Wu, Liping Sun, Yongqiang Hua, Chunyang Yang, Yu Teng
BACKGROUND: Acute lung injury is a life-threatening inflammatory lung condition. Studies have explored the role of lncRNA H19 in several diseases, including cancers. In this study, We aimed to explore the role of H19 in lipopolysaccharide (LPS)-induced lung injury and to elucidate the underlying molecular mechanism. METHODS: MRC-5 cells (lung fibroblast cells) were used in the experiment. Cell viability, proliferation, and apoptosis were measured by specific assays...
January 8, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29315235/response-of-fibroblasts-mrc-5-to-flufenamic-acid-grafted-mcm-41-nanoparticles
#4
Giovanna Gomes Lara, Marcelo Fernandes Cipreste, Gracielle Ferreira Andrade, Wellington Marcos da Silva, Edésia Martins Barros de Sousa
Recently, flufenamic acid (FFA) was discovered among fenamates as a free radical scavenger and gap junction blocker; however, its effects have only been studied in cancer cells. Normal cells in the surroundings of a tumor also respond to radiation, although they are not hit by it directly. This phenomenon is known as the bystander effect, where response molecules pass from tumor cells to normal ones, through communication channels called gap junctions. The use of the enhanced permeability and retention effect, through which drug-loaded nanoparticles smaller than 200 nm may accumulate around a tumor, can prevent the local side effect upon controlled release of the drug...
January 9, 2018: Bioengineering
https://www.readbyqxmd.com/read/29302627/in-vitro-antitumor-activity-of-patulin-on-cervical-and-colorectal-cancer-cell-lines
#5
M Abastabar, A Akbari, J Akhtari, M T Hedayati, T Shokohi, H Mehrad-Majd, H Ghalehnoei, S Ghasemi
Background and Purpose: Patulin is a mycotoxin produced by some molds, especially Aspergillus and Penicilium, and is responsible for mycotoxicosis in animals and humans.There is still not very detailed data about the anti-cancer potency of patulin, but some reports demonstrated that it induces cellular apoptosis and toxicity. Materials and Methods: To determine the efficacy of patulin as a therapeutic strategy for cervical and colorectal cancers, we investigated its effects on HeLa,SW-48, and MRC-5 cell lines...
March 2017: Advances in Medical Mycology (Iran)
https://www.readbyqxmd.com/read/29299944/evaluation-of-genotoxic-potential-of-avarol-avarone-and-its-methoxy-and-methylamino-derivatives-in-prokaryotic-and-eukaryotic-test-models
#6
Stoimir Kolarević, Dragana Milovanović, Margareta Kračun-Kolarević, Jovana Kostić, Karolina Sunjog, Rajko Martinović, Jelena Đorđević, Irena Novaković, Dušan Sladić, Branka Vuković-Gačić
In this study, mutagenic and genotoxic potential of anti-tumor compounds avarol, avarone, and its derivatives 3'-methoxyavarone, 4'-(methylamino)avarone and 3'-(methylamino)avarone was evaluated and compared to cytostatics commonly used in chemotherapy (5-fluorouracil, etoposid, and cisplatin). Mutagenic potential of selected hydroquinone and quinones was assessed in prokaryotic model by the SOS/umuC assay in Salmonella typhimurium TA1535/pSK1002. Genotoxic potential was also assessed in eukaryotic models using comet assay in human fetal lung cell line (MRC-5), human adenocarcinoma epithelial cell line (A549), and in human peripheral blood cells (HPBC)...
January 4, 2018: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/29291071/anti-inflammatory-activity-of-electron-deficient-organometallics
#7
Jingwen Zhang, Anaïs Pitto-Barry, Lijun Shang, Nicolas P E Barry
We report an evaluation of the cytotoxicity of a series of electron-deficient (16-electron) half-sandwich precious metal complexes of ruthenium, osmium and iridium ([Os/Ru(η6-p-cymene)(1,2-dicarba-closo-dodecarborane-1,2-dithiolato)] (1/2), [Ir(η5-pentamethylcyclopentadiene)(1,2-dicarba-closo-dodecarborane-1,2-dithiolato)] (3), [Os/Ru(η6-p-cymene)(benzene-1,2-dithiolato)] (4/5) and [Ir(η5-pentamethylcyclopentadiene)(benzene-1,2-dithiolato)] (6)) towards RAW 264.7 murine macrophages and MRC-5 fibroblast cells...
November 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29289891/new-antiglioma-zwitterionic-pronucleotides-with-an-fdump-framework
#8
Agnieszka Szymanska-Michalak, Dariusz Wawrzyniak, Grzegorz Framski, Jacek Stawinski, Jan Barciszewski, Adam Kraszewski
We have designed and synthesized new 5-fluoro-2'-deoxyuridine 5'-phosphate pronucleotides which can function as potential agents against the glioblastoma multiforme tumor. Their anti-malignant potency has been tested against T98G, U-118 MG, U-87 MG gliomas, HeLa, and Caco-2 cancer cell lines, using MRC-5 healthy cells as a reference. Five of the sixteen compounds (4c, 4f-i) exhibited significant anticancer potency and high selectivity indices (SI 12-66). It is likely that these zwitterionic pronucleotides may function in a similar manner to zwitterionic phospholipids, by inducing cell membrane charge disorder, making the cell permeable to bioactive agents...
December 21, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29287791/chemical-characterization-antioxidant-genotoxic-and-in-vitro-cytotoxic-activity-assessment-of-juniperus-communis-var-saxatilis
#9
Bojana Vasilijević, Jelena Knežević-Vukčević, Dragana Mitić-Ćulafić, Dejan Orčić, Marina Francišković, Tatjana Srdic-Rajic, Marina Jovanović, Biljana Nikolić
Chemical composition and antioxidative, genotoxic and cytotoxic potential of essential oil (EO) and post-distillation waste (PDW) of Serbian Juniperus communis L. var. saxatilis Pall. was studied in human lung carcinoma (A549) and normal lung fibroblast (MRC-5) cells. GC-MS analysis identified 93.95% of total EO content and determined α-pinen as a dominant component (23.61%). LC-MS/MS analysis of PDW pointed at rutin (12.2 mg g-1) and quinic acid (11.1 mg g-1) as the most abundant. Antioxidativity of PDW was strong in DPPH (IC50 was 5...
December 26, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29259993/a-study-on-cytotoxic-and-apoptotic-potential-of-a-triterpenoid-saponin-3-o-%C3%AE-l-arabinosyl-oleanolic-acid-isolated-from-schumacheria-castaneifolia-vahl-in-human-non-small-cell-lung-cancer-nci-h292-cells
#10
Sameera R Samarakoon, Meran K Ediriweera, Chukwumaobim Daniel Uzochukwuwulu Nwokwu, Chamara Janaka Bandara, Kamani H Tennekoon, Poorna Piyathilaka, D Nedra Karunaratne, Veranja Karunaratne
Lung cancer is the major cause of cancer death among men. A number of natural compounds have proven to be useful in the treatmet of lung cancer. This study was aimed to determine cytotoxic and apoptotoic effects of a natural compound 3-O-α-L-arabinosyl oleanolic acid (3-O-L-AO) isolated from Schumacheria castaneifolia in non-small-cell lung cancer (NCI-H292) cells. Cytotoxic effects of 3-O-L-AO were determined by Sulforhodamine B (SRB) assay and apoptotic effects were tested by evaluating (a) apoptotsis related morphological changes, (b) caspase 3/7 activity, and (c) expression of Bax, p53, and survivin genes...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29258862/broad-spectrum-antiviral-activity-of-the-eif4a-inhibitor-silvestrol-against-corona-and-picornaviruses
#11
Christin Müller, Falk W Schulte, Kerstin Lange-Grünweller, Wiebke Obermann, Ramakanth Madhugiri, Stephan Pleschka, John Ziebuhr, Roland K Hartmann, Arnold Grünweller
Coronaviruses (CoV) and picornaviruses are plus-strand RNA viruses that use 5' cap-dependent and cap-independent strategies, respectively, for viral mRNA translation initiation. Here, we analyzed the effects of the plant compound silvestrol, a specific inhibitor of the DEAD-box RNA helicase eIF4A, on viral translation using a dual luciferase assay and virus-infected primary cells. Silvestrol was recently shown to have potent antiviral activity in Ebola virus-infected human macrophages. We found that silvestrol is also a potent and non-toxic inhibitor of cap-dependent viral mRNA translation in CoV-infected human embryonic lung fibroblast (MRC-5) cells...
December 16, 2017: Antiviral Research
https://www.readbyqxmd.com/read/29243039/alkaloids-from-narcissus-poeticus-cv-pink-parasol-of-various-structural-types-and-their-biological-activity
#12
Marcela Šafratová, Anna Hošťálková, Daniela Hulcová, Kateřina Breiterová, Veronika Hrabcová, Marta Machado, Diana Fontinha, Miguel Prudêncio, Jiří Kuneš, Jakub Chlebek, Daniel Jun, Martina Hrabinová, Lucie Nováková, Radim Havelek, Martina Seifrtová, Lubomír Opletal, Lucie Cahlíková
Fifteen Amaryllidaceae alkaloids (1-15) of various structural types were isolated by standard chromatographic methods from fresh bulbs of Narcissus poeticus cv. Pink Parasol. The chemical structures were elucidated by MS, and 1D and 2D NMR spectroscopic analyses, and by comparison with literature data. Narcipavline (5) and narcikachnine (6) are reported here for the first time. In their structure are combined two basic structural types of Amaryllidaceae alkaloids (galanthamine- and galanthindole-structural types), which represent a new structural type of these compounds...
December 14, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/29233688/a-preliminary-investigation-of-the-toxic-effects-of-benzylpenicilloic-acid
#13
Cheng Cui, Huijun Lu, Qi Hui, Shiying Lu, Yan Liu, Waqas Ahmad, Yang Wang, Pan Hu, Xilin Liu, Yan Cai, Lingjiu Liu, Xiang Zhang, Ke Zhao, Yansong Li, Honglin Ren, Ningyi Jin, Zengshan Liu
Benzylpenicilloic acid (BPNLA) is a major cleavage product of benzylpenicillin G (BP) generated after heating treatment. It is found in animal derived products from the unstable residual penicillin. Previous studies have only reported the allergic reaction caused by BPNLA, but not described its toxicity. In this study, the toxicity of BPNLA was evaluated to report the potential public health risk posed by animal derived products using in vivo and in vitro models, including the acute toxicity assays, cytotoxicity assays, apoptosis assays and cell cycle progression assay...
December 9, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29220180/securamine-derivatives-from-the-arctic-bryozoan-securiflustra-securifrons
#14
Kine Ø Hansen, Johan Isaksson, Annette Bayer, Jostein A Johansen, Jeanette H Andersen, Espen Hansen
Bryozoans belonging to the Flustridae family have proven to be a rich source of structurally unique secondary metabolites. As part of our continuing search for bioactive secondary metabolites from Arctic marine invertebrates, the organic extract of Securiflustra securifrons was examined. This resulted in the isolation of three new halogenated, hexacyclic indole-imidazole alkaloids, securamines H-J (1-3), together with the previously reported compounds securamines C (4) and E (5). The structures of the new compounds were elucidated by spectroscopic methods including 1D and 2D NMR and analysis of HRMS data...
December 8, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29202332/chloro-triphenylphosphine-gold-i-a-forefront-reagent-in-gold-chemistry-as-apoptotic-agent-for-cancer-cells
#15
M P Chrysouli, C N Banti, N Kourkoumelis, N Panayiotou, G S Markopoulos, A J Tasiopoulos, S K Hadjikakou
The antiproliferative activity of the gold complex [Au(tpp)Cl] (1) (tpp=triphenyphosphine) against human breast adenocarcinoma cells (MCF-7) and normal human fetal lung fibroblast cells (MRC-5) was investigated. The compound exhibits stronger activity against MCF-7 cells than cisplatin. The apoptotic pathway, especially though the mitochondrion damage was concluded by cell cycle arrest, flow cytometry using Annexin V-Fluorescein IsoThioCyanate (FITC) and Propidium Iodide (PI) as indicators, assays and permeabilization of the mitochondrial membrane tests...
November 8, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29200711/biological-activities-and-cytotoxicity-of-eperua-oleifera-ducke-oil-resin
#16
Fernanda Torlania Alves Gomes, Ana Paula de Araújo Boleti, Lidiam M Leandro, Diego Squinello, Ellen S P Aranha, Marne C Vasconcelos, Paul Cos, Valdir F Veiga-Junior, Emerson Silva Lima
Background: The oil-resin of Eperua oleifera Ducke has been used in popular medicine similarly to the copaiba oil (Copaifera spp.). Objective: This study aimed to investigate the effects of the acid fraction of E. oleifera oil-resin (AFEOR) on cell proliferation, collagen production in human fibroblasts, inhibition of metalloproteinases, and cytotoxicity against tumor cell lines. Materials and Methods: Acid fraction of E. oleifera was fractionated in the ion exchange column chromatography...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29199032/surgical-outcome-of-superior-rectus-transposition-in-esotropic-duane-syndrome-and-abducens-nerve-palsy
#17
Rohit Agarwal, Medha Sharma, Rohit Saxena, Pradeep Sharma
PURPOSE: To evaluate surgical outcome of superior rectus transposition (SRT) in esotropic Duane syndrome (DS) and abducens nerve palsy. METHODS: Retrospective medical record analysis of all patients with esotropic DS and abducens nerve palsy treated with SRT at our center with minimum follow-up of 6 months. Primary outcome measures were esotropia in primary position and abduction limitation. Secondary outcome measures included head turn, stereopsis, and cyclovertical deviations...
November 30, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/29195215/amberlite-ir-120-h-mediated-on-water-synthesis-of-fluorescent-ruthenium-ii-arene-8-hydroxyquinoline-complexes-for-cancer-therapy-and-live-cell-imaging
#18
Ashaparna Mondal, Sourav De, Santanu Maiti, Bidisha Sarkar, Ashok Kumar Sk, Rini Jacob, Anbalagan Moorthy, Priyankar Paira
A series of Ruthenium-Quinolinol complexes (3a-d &4a-d) has been synthesized by employing a simple, efficient and environmental friendly condition. Catalytic role of Amberlite IRA-120(H) has been demonstrated. The structures of the new compounds were elucidated by the analysis of spectroscopic data. The stability of these complexes was measured by UV spectroscopy & time dependent NMR spectroscopy. These newly developed complexes were represented as potential anticancer agent against human breast carcinoma cell line (MCF-7), human Epitheloid Cervix Carcinoma (HeLa), human lung adenocarcinoma epithelial cell line (A549) and human colon cancer cell line (Caco-2)...
November 28, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29185215/nickle-ii-ions-exacerbate-bleomycin-induced-pulmonary-inflammation-and-fibrosis-by-activating-the-ros-akt-signaling-pathway
#19
Lawei Yang, Ziying Lin, Yahong Wang, Chunyan Li, Wenya Xu, Qinglan Li, Weimin Yao, Zeqing Song, Gang Liu
Nickle (Ni) is a heavy metal found in particulate matter. We previously reported that Ni ions are strongly associated with high apoptosis rates and high expression of IL-1β in human bronchial epithelial cells following exposure to PM2.5; however, the effects of Ni ions on pulmonary fibrosis have not been fully elucidated. In the current study, we evaluated whether Ni ions can exacerbate bleomycin (BLM)-induced pulmonary fibrosis in a mouse model and illustrated the potential mechanism. Ni ions inhibited cell proliferation and induced apoptosis in A549 and MRC-5 cells...
November 28, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29183746/assessment-of-the-anti-snakebite-properties-of-extracts-of-aniba-fragrans-ducke-lauraceae-used-in-folk-medicine-as-complementary-treatment-in-cases-of-envenomation-by-bothrops-atrox
#20
Valéria Mourão de Moura, Noranathan da Costa Guimarães, Luana Travassos Batista, Luciana A Freitas-de-Sousa, Joanderson de Sousa Martins, Maria Carolina Scheffer de Souza, Patrícia D Oliveira de Almeida, Wuelton Marcelo Monteiro, Ricardo Bezerra de Oliveira, Maria Cristina Dos-Santos, Rosa Helena Veras Mourão
ETHNOPHARMACOLOGICAL RELEVANCE: Extracts of leaves and bark of Aniba fragrans are used as tea (decoction) to treat snakebites in communities in the Brazilian Amazon. The aqueous extract of the leaves of A. fragrans has been proven to be effective against Bothrops venom, but only when pre-incubated with the venom. This study sought to assess the potential of different types of extract of this species to inhibit the biological activities of Bothrops atrox venom (BaV) when used the same way as in folk medicine...
November 25, 2017: Journal of Ethnopharmacology
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