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https://www.readbyqxmd.com/read/28535649/-cancer-associated-fibroblasts-regulate-the-chemoresistance-of-lung-cancer-cell-line-a549-via-sdf-1-secretion
#1
F Zou, Z H Zhang, Y T Zhang, J Q Zhao, X L Zhang, C L Wen, X Y Song, W M Zhou
Objective: To investigate whether cancer-associated- fibroblasts (CAF), the key component of tumor microenvironment, regulate the chemoresistant capacity of lung cancer cell line A549 through SDF-1 secretion. Methods: Primary cell isolation techniques was used to isolate cancer-associated-fibroblasts from lung cancer patients. MTT assay was applied to determine the proliferation and chemoresistance of A549 cells. Quantative PCR was used to detect the mRNA changes of Bcl-xL. Western blotting was used to detect the protein expression of Bcl-xL...
May 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28535539/mir-424-promotes-non-small-cell-lung-cancer-progression-and-metastasis-through-regulating-the-tumor-suppressor-gene-tnfaip1
#2
Ming Zhang, Chang'e Gao, Yi Yang, Gaofeng Li, Jian Dong, Yiqin Ai, Qianli Ma, Wenhui Li
BACKGROUND/AIMS: This study aimed to investigate the potential roles of miR-424 expression in non-small cell lung cancer (NSCLC) metastasis and growth and its underlying mechanism. METHODS: The expression of miR-424 in two NSCLC cell lines (A549 and H1975) was altered by transfection with miR-424 mimic and inhibitor. Effects of miR-424 overexpression and suppression on cells migration, invasion and colony formation were analyzed. Target genes for miR-424 were predicted using bioinformatics method and then verified using luciferase assay...
May 25, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28534943/bu-fei-decoction-attenuates-the-tumor-associated-macrophage-stimulated-proliferation-migration-invasion-and-immunosuppression-of-non-small-cell-lung-cancer-partially-via-il-10-and-pd-l1-regulation
#3
Lina Pang, Shuyan Han, Yanna Jiao, Shantong Jiang, Xiran He, Pingping Li
Macrophages play a pivotal role in tumor microenvironment. Bu-Fei Decoction (BFD) is a classical formula of traditional Chinese medicine (TCM) to alleviate lung cancer related symptoms, whether it has antitumor effect or could influence cancer microenvironment deserves further study. The aim of the present study was to examine the antitumor effect of BFD on non-small cell lung cancer (NSCLC), and to investigate the underlying mechanisms through tumor associated macrophages (TAMs). M2-polarized TAMs were induced by Phorbol 12-myristate 13-acetate (PMA) and interleukin 4 (IL-4)...
May 19, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28534939/mir%C3%A2-181b%C3%A2-5p-mediates-tgf%C3%A2-%C3%AE-1-induced-epithelial-to-mesenchymal-transition-in-non-small-cell-lung-cancer-stem-like-cells-derived-from-lung-adenocarcinoma-a549-cells
#4
Xuetao Li, Jing Han, Haizhen Zhu, Lina Peng, Zhengtang Chen
The ability of non-small cell lung cancer (NSCLC) cells to invade and metastasize is associated with epithelial-to-mesenchymal transition (EMT). The process of EMT is, at least in part, regulated by microRNAs. However, it is unknown whether microRNAs regulate EMT in cancer stem-like cells (CSLCs), or which microRNAs are involved. In the present study, we compared microRNA expression in A549 cells, TGF‑β1-treated A549 cells, CSLCs characterized by the CD133+/CD326+ phenotype, and TGF‑β1-treated CSLCs. We found that miR‑181b‑5p expression was upregulated by TGF‑β1...
May 17, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28534369/the-relationship-between-mir-17-5p-mir-92a-and-let-7b-expression-with-non-small-cell-lung-cancer-targeted-drug-resistance
#5
Jianhua Gong, Li He, Jingping Ma, Jiahong Zhang, Lixin Wang, Jipeng Wang
PURPOSE: To investigate the relationship between microRNA (miR)-17-5p, miR-92a, and let-7b expression and resistance to the non-small cell lung cancer (NSCLC) targeted drug Gefitinib. METHODS: The human NSCLC cell line A549 and its drug resistant strain A549/GR (Gefitinib Resistant) was used in this study. The expression of miR-17-5p, miR-92a, and let-7b in different NSCLC cell lines was detected before and after transfection using real-time fluorescent PCR. Cell viability was detected using the CCK8 method...
March 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28533632/local-ph-monitoring-of-small-cluster-of-cells-using-a-fiber-optic-dual-core-micro-probe
#6
Sisi Chen, Qingbo Yang, Hai Xiao, Honglan Shi, Yinfa Ma
Biological studies of tissues and cells have enabled numerous discoveries, but these studies still bear potential risks of invalidation because of cell heterogeneity. Through high-accuracy techniques, recent studies have demonstrated that discrepancies do exist between the results from low-number-cell studies and cell-population-based results. Thus the urgent need to re-evaluate key principles on limited number of cells has been provoked. In this study, a novel designed dual-core fiber-optic pH micro-probe was fabricated and demonstrated for niche environment pH sensing with high spatial resolution...
March 31, 2017: Sensors and Actuators. B, Chemical
https://www.readbyqxmd.com/read/28533489/sirtuin-6-inhibits-epithelial-to-mesenchymal-transition-during-idiopathic-pulmonary-fibrosis-via-inactivating-tgf-%C3%AE-1-smad3-signaling
#7
Kunming Tian, Panpan Chen, Zhiping Liu, Shutian Si, Qian Zhang, Yong Mou, Lianyong Han, Qin Wang, Xue Zhou
Sirt6 which is implicated in the control of aging, cancer, and metabolism, has been shown to have anti-fibrosis function in heart and liver. However, whether Sirt6 inhibits idiopathic pulmonary fibrosis remains elusive. Epithelial to mesenchymal transition has been found to be involved in the pathogenesis of idiopathic pulmonary fibrosis. In the present study, forced expression of Sirt6 significantly abrogated TGF-β1-induced epithelial to mesenchymal transition-like phenotype and cell behaviors in A549 cells...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28532536/-role-of-sox4-on-ddp-resistance-in-non-small-cell-lung-cancer-cell-of-a549
#8
Wei Li, Xu Liu, Guoqian Zhang, Linlin Zhang
BACKGROUND: Lung cancer is one of the most serious disease and the incidence of non-small cell lung cancer (NSCLC) is the highest in lung cancer. The main reason for the failure of chemotherapy is the tolerance to cisplatin. Transcriptional regulator SOX4 plays an important role in the occurrence and development of many tumors, and regulates Wnt signaling pathway by regulating the expression of β-catenin. We aimed to investigate the role of SOX4 on cisplatin-resistance in NSCLC cell A549 cell...
May 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28532223/preliminary-study-on-fabrication-characterization-and-synergistic-anti-lung-cancer-effects-of-self-assembled-micelles-of-covalently-conjugated-celastrol-polyethylene-glycol-ginsenoside-rh2
#9
Peng Li, XiaoYue Zhou, Ding Qu, Mengfei Guo, Chenyi Fan, Tong Zhou, Yang Ling
The aim of this study was to develop an amphipathic polyethylene glycol (PEG) derivative that was bi-terminally modified with celastrol and ginsenoside Rh2 (Celastrol-PEG-G Rh2). Such derivative was capable of forming novel, celastrol-loaded polymeric micelles (CG-M) for endo/lysosomal delivery and thereby synergistic treatment of lung cancer. Celastrol-PEG-G Rh2 with a yield of 55.6% was first synthesized and characterized. Its critical micellar concentration was 1 × 10(-5 )M, determined by pyrene entrapment method...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28532117/optimization-for-extracellular-biosynthesis-of-silver-nanoparticles-by-penicillium-aculeatum-su1-and-their-antimicrobial-activity-and-cytotoxic-effect-compared-with-silver-ions
#10
Liang Ma, Wei Su, Jian-Xin Liu, Xiao-Xi Zeng, Zhi Huang, Wen Li, Zheng-Chun Liu, Jian-Xin Tang
The present study addresses an eco-friendly and energy-saving method for extracellular biosynthesis of silver nanoparticles (AgNPs) using a cell free filtrate of the fungus strain Penicillium aculeatum Su1 as a reducing agent. Parametric optimization of the biosynthesis process demonstrated different effects on the size, distribution, yield, and synthesis rate of biosynthesized AgNPs. The transmission electron microscopy (TEM) measurements demonstrated that AgNPs were spherical or approximately spherical, with a size between 4 and 55nm...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532114/hypocrellin-b-and-nano-silver-loaded-polymeric-nanoparticles-enhanced-generation-of-singlet-oxygen-for-improved-photodynamic-therapy
#11
Subramanian Natesan, Venkateshwaran Krishnaswami, Chandrasekar Ponnusamy, Madi Madiyalakan, Thomas Woo, Rajaguru Palanisamy
A nanoparticulate photodynamic approach was employed with an objective to achieve enhanced production of singlet oxygen ((1)O2), for the management of posterior segment eye diseases like age related macular degeneration. The hypocrellin B (HB) loaded poly lactide-co-glycolide nanoparticle formulations were incorporated with nano silver (HBS-NPs). The optimized HBS-NPs contained 2.60±0.06mg/mL of HB and showed (i) 135.6 to 828.2nm size range, and (ii) negative zeta potential with a narrow polydispersity index...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532051/chitosan-folate-decorated-carbon-nanotubes-for-site-specific-lung-cancer-delivery
#12
Rahul Pratap Singh, Gunjan Sharma, Sonali, Sanjay Singh, Shreekant Bharti, Bajarangprasad L Pandey, Biplob Koch, Madaswamy S Muthu
The aim of this work was to formulate chitosan-folate conjugated multi-walled carbon nanotubes for the lung cancer targeted delivery of docetaxel. The chitosan-folate conjugate was synthesized and the conjugation was confirmed by Fourier transform infrared spectroscopy. The multi-walled carbon nanotubes were characterized for their particle size, polydispersity, zeta potential, surface morphology, drug encapsulation efficiency and in vitro release study. The in vitro cellular uptake, cytotoxicity, and cell cycle analysis of the docetaxel/coumarin-6 loaded multi-walled carbon nanotubes were carried out to compare the effectiveness of the formulations...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531122/microwave-assisted-synthesis-of-imidazo-4-5-f-1-10-phenanthroline-derivatives-as-apoptosis-inducers-in-chemotherapy-by-stabilizing-bcl-2-g-quadruplex-dna
#13
Li Li, Jie-Qiong Cao, Hui-Min Liu, Qiong Wu, Qiu-Hui Pan, Zhi-Ping Zeng, Yu-Tao Lan, Yu-Mei Li, Wen-Jie Mei, Xi-Cheng Wang, Wen-Jie Zheng
Herein, a series of imidazo[4,5-f][1,10] phenanthroline derivatives RPIP (PIP = imidazo [4,5-f][1,10] phenanthroline, R = NO₂, 1; CF₃, 2; Cl, 3; OH, 4) have been synthesized in yields of 82.3-94.7% at 100 °C under the irradiation of microwave. MTT assay has been utilized to evaluate the inhibitory activity (IC50) of these compounds against the growth of various tumor cells, and the results revealed that these compounds, especially 1, exhibited excellent inhibitory activity against the growth of A549 cells with IC50 of 15...
May 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28529640/lung-cancer-targeting-peptides-with-multi-subtype-indication-for-combinational-drug-delivery-and-molecular-imaging
#14
Yi-Hsuan Chi, Jong-Kai Hsiao, Ming-Huang Lin, Chen Chang, Chun-Hsin Lan, Han-Chung Wu
Lung cancer is the leading cause of cancer-related death worldwide. Most targeted drugs approved for lung cancer treatment are tyrosine kinase inhibitors (TKIs) directed against EGFR or ALK, and are used mainly for adenocarcinoma. At present, there is no effective or tailored targeting agent for large cell carcinoma (LCC) or small cell lung cancer (SCLC). Therefore, we aimed to identify targeting peptides with diagnostic and therapeutic utility that possess broad subtype specificity for SCLC and non-small cell lung cancer (NSCLC)...
2017: Theranostics
https://www.readbyqxmd.com/read/28529564/synthesis-characterization-and-anticancer-activities-of-transition-metal-complexes-with-a-nicotinohydrazone-ligand
#15
Shanshan Shen, Hong Chen, Taofeng Zhu, Xiuqin Ma, Jun Xu, Wenjiao Zhu, Ruhua Chen, Jing Xie, Tieliang Ma, Lei Jia, Yuan Wang, Chunyan Peng
The reaction of divalent transition metal salts and (E)-N'-(1-(pyridin-2-yl)ethylidene)nicotinohydrazide (penh) led to the formation of [Mn(penh)2] (complex 1), [Co(penh)2] (complex 2), [Cu(penh)2] (complex 3) and [Cd (penh)2] (complex 4) complexes. The four complexes were characterized using elemental analyses, infrared spectra and single-crystal X-ray diffraction analyses. Subsequently, the complexes were used for in vitro cell level experiments to determine potential antitumor effects. The results demonstrated that the complexes exhibited a similar structure; however, they were crystallized with distinct space groups...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529563/role-of-nkg2d-in-cytokine-induced-killer-cells-against-lung-cancer
#16
Xiaowei Yin, Xuzhang Lu, Zhang Xiuwen, Zhou Min, Rong Xiao, Zhengdao Mao, Qian Zhang
It has been previously demonstrated that cytokine-induced killer (CIK) cells possess potent cytotoxicity against various cancer cells, including lung cancer cells. However, the mechanism by which CIK cells recognize lung cancer cells has not been understood. The interaction between killer cell lectin like receptor K1 (NKG2D) receptor and NKG2D ligands was demonstrated to serve an important role in target cell killing by natural killer cells. The present study investigated whether NKG2D receptor and NKG2D ligand interactions are involved in the CIK-directed killing of lung cancer cells...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529241/downregulation-of-transcription-factor-sp1-suppresses-malignant-properties-of-a549-human-lung-cancer-cell-line-with-decreased-%C3%AE-4-galactosylation-of-highly-branched-n-glycans
#17
Kodai Muramoto, Riho Tange, Takayuki Ishii, Kana Miyauchi, Takeshi Sato
Dramatic changes in the glycan structures of cell surface proteins have been observed upon malignant transformation of cells as induced by the altered expression levels of glycosyltransferases. Such changes are closely associated with the malignant properties of cancer cells. Transcription factor Sp1 regulates the gene expression of various molecules including glycosyltransferases. Herein, we investigated whether or not Sp1-downregulation affects to N-glycosylation of glycoproteins and malignant properties of A549 human lung carcinoma cell line...
May 20, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28529146/multiple-endpoints-to-evaluate-pristine-and-remediated-titanium-dioxide-nanoparticles-genotoxicity-in-lung-epithelial-a549-cells
#18
Andrea Stoccoro, Sebastiano Di Bucchianico, Fabio Coppedè, Jessica Ponti, Chiara Uboldi, Magda Blosi, Camilla Delpivo, Simona Ortelli, Anna Luisa Costa, Lucia Migliore
Titanium dioxide nanoparticles (TiO2 NP) are broadly used in a wide range of applications. Several studies have reported that TiO2 NP possess cytotoxic and genotoxic properties that could induce adverse health effects in humans. The FP7 Sanowork project was aimed to minimize occupational hazard and exposure to engineered nanomaterials (ENM), including TiO2 NP, through the surface modification in order to avoid possible adverse toxic effects for humans. In this study we investigated cytotoxicity, genotoxicity and epigenetic properties of TiO2 NP uncoated and coated with silica or citrate, as well as of the benchmark material P25...
May 18, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28528134/enhancing-tumor-cell-response-to-multidrug-resistance-with-ph-sensitive-quercetin-and-doxorubicin-conjugated-multifunctional-nanoparticles
#19
Cenk Daglioglu
Classical chemotherapy uses chemotherapeutic agents as a mainstay of anticancer treatment. However, the development of multidrug resistance to chemotherapy limits the effectiveness of current cancer treatment. Nanosized bioconjugates combining a chemotherapeutic agent with a pharmacological approach may improve the curative effect of chemotherapeutic agents. Herein I addressed this issue by describing the synthesis, and testing of, pH-responsive Fe3O4@SiO2(FITC)-BTN/QUR/DOX multifunctional nanoparticles. The particles were designed to modulate resistance-mediating factors and to potentiate the efficacy of DOX against chemoresistance...
May 10, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28527723/activation-of-nrf2-signaling-augments-vesicular-stomatitis-virus-oncolysis-via-autophagy-driven-suppression-of-antiviral-immunity
#20
David Olagnier, Rassin R Lababidi, Samar Bel Hadj, Alexandre Sze, Yiliu Liu, Sharadha Dayalan Naidu, Matteo Ferrari, Yuan Jiang, Cindy Chiang, Vladimir Beljanski, Marie-Line Goulet, Elena V Knatko, Albena T Dinkova-Kostova, John Hiscott, Rongtuan Lin
Oncolytic viruses (OVs) offer a promising therapeutic approach to treat multiple types of cancer. In this study, we show that the manipulation of the antioxidant network via transcription factor Nrf2 augments vesicular stomatitis virus Δ51 (VSVΔ51) replication and sensitizes cancer cells to viral oncolysis. Activation of Nrf2 signaling by the antioxidant compound sulforaphane (SFN) leads to enhanced VSVΔ51 spread in OV-resistant cancer cells and improves the therapeutic outcome in different murine syngeneic and xenograft tumor models...
May 17, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
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