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https://www.readbyqxmd.com/read/29793177/long-noncoding-rna-gas5-suppresses-triple-negative-breast-cancer-progression-through-inhibition-of-proliferation-and-invasion-by-competitively-binding-mir-196a-5p
#1
Shuqin Li, Jun Zhou, Zhaoxin Wang, Peishun Wang, Xitao Gao, Yan Wang
Triple-negative breast cancer (TNBC) is considered to be the most aggressive and lethal type of breast cancer. Many studies have suggested that the dysfunction of long noncoding RNAs (lncRNAs) is correlated with breast cancer metastasis and progression. Here, we show that levels of the lncRNA, growth arrest-specific transcript 5 (GAS5), are decreased in TNBC tissues, and this down-regulation of GAS5 is associated with an aggressive tumor phenotype in patients, affecting clinical stage, lymph node metastasis and overall survival...
May 21, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29792952/anticancer-mechanism-of-sinapic-acid-in-pc-3-and-lncap-human-prostate-cancer-cell-lines
#2
Canan Eroğlu, Ebru Avcı, Hasibe Vural, Ercan Kurar
Sinapic acid (SA) is a derivative of hydroxycinnamic acid and found in various vegetables and fruit species. Aim was to evaluate the anticancer effects of SA in PC-3 and LNCaP human prostate cancer cells. The effect of SA on cell viability was determined using XTT assay. Expressions of 8 genes for apoptosis and 6 genes for metastasis were evaluated by qPCR. Caspase-3 activity was determined using caspase-3 colorimetric assay kit. Effect of SA on cell invasion was evaluated with cell invasion assay. The IC50 dose of SA in PC-3 and LNCaP cells was found to be 1000 μM for 72 h...
May 21, 2018: Gene
https://www.readbyqxmd.com/read/29792947/trail-attenuates-sulforaphane-mediated-nrf2-and-sustains-ros-generation-leading-to-apoptosis-of-trail-resistant-human-bladder-cancer-cells
#3
Cheng-Yun Jin, Ilandarage Menu Neelaka Molagoda, Wisurumuni Arachchilage Hasitha Maduranga Karunarathne, Sang-Hyuck Kang, Cheol Park, Gi-Young Kim, Yung Hyun Choi
Tumor necrosis factor-related apoptosis inducing ligand (TRAIL) can preferentially initiate apoptosis in malignant cells with minimal toxicity to normal cells. Unfortunately, many human cancer cells are refractory to TRAIL-induced apoptosis through many unknown mechanisms. Here, we report that TRAIL resistance can be reversed in human bladder cancer cell lines by treatment with sulforaphane (SFN), a well-known chemopreventive isothiocyanate in various cruciferous vegetables. Combined treatment with SFN and TRAIL (SFN/TRAIL) significantly induced apoptosis concomitant with activation of caspases, loss of mitochondrial membrane potential (MMP), Bid truncation, and induction of death receptor 5...
May 21, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29792945/cross-linking-by-epichlorohydrin-and-diepoxybutane-correlates-with-cytotoxicity-and-leads-to-apoptosis-in-human-leukemia-hl-60-cells
#4
Phuong M Le, Vanesa L Silvestri, Samuel C Redstone, Jordanne B Dunn, Julie T Millard
The bifunctional alkylating agents epichlorohydrin (ECH) and diepoxybutane (DEB) have been linked to increased cancer risks in industrial workers. These compounds react with DNA and proteins, leading to genotoxic effects. We used the comet assay to monitor formation of cross-links in HL-60 cells treated with ECH, DEB, and the structurally related anti-cancer drug mechlorethamine (HN2). We report a time- and dose-dependent cytotoxicity that correlated with cross-linking activity, following the order HN2 > DEB > ECH...
May 21, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29792865/aspirin-restores-abt-737-mediated-apoptosis-in-human-renal-carcinoma-cells
#5
Yen-Chuan Ou, Jian-Ri Li, Jiaan-Der Wang, Wen-Ying Chen, Yu-Hsiang Kuan, Ching-Ping Yang, Su-Lan Liao, Hsi-Chi Lu, Chun-Jung Chen
Aspirin is a novel chemopreventive agent against malignancy. However, outcomes of aspirin monotherapy of renal cell carcinoma (RCC) are inconsistent across studies. ABT-737, an BH3 mimetic inhibitor, is also a promising antitumor drug. Cancer cells including those from RCC, that have high levels of Mcl-1, are refractory to ABT-737-induced apoptosis. We here investigated how aspirin treatment modulates the ABT-737-induced apoptosis. Using the in vitro model of human 786-O cells, we showed that aspirin had sensitized cells to ABT-737 induced apoptosis...
May 21, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29792857/tgf-%C3%AE-plays-a-vital-role-in-triple-negative-breast-cancer-tnbc-drug-resistance-through-regulating-stemness-emt-and-apoptosis
#6
Xiaodan Xu, Lu Zhang, Xiaogang He, Ping Zhang, Caihong Sun, Xiaojun Xu, Yaojuan Lu, Feifei Li
Triple negative breast cancer (TNBC) is the most malignant subtype of breast cancer in which the cell surface lacks usual targets for drug to exhibit its effects. Epirubicin (Epi) is widely used for TNBC, but a substantial number of patients develop Epi resistance that is usually associated with poor prognosis. Transforming growth factor (TGF-β) is a multifunctional cytokine. In recent study, it appears that TGF-β influences the cancer stem cell population, thus, the drug resistance of cancer may also be affected...
May 21, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29792692/small-molecule-targeted-recruitment-of-a-nuclease-to-rna
#7
Matthew G Costales, Yasumasa Matsumoto, Sai Pradeep Velagapudi, Matthew D Disney
The choreography between RNA synthesis and degradation is a key determinant in biology. Engineered systems such as CRISPR have been developed to rid a cell of RNAs. Here, we show that a small molecule can recruit a nuclease to a specific transcript, triggering its destruction. A small molecule that selectively binds the oncogenic microRNA(miR)-96 hairpin precursor was appended with a short 2'-5' poly(A) oligonucleotide. The conjugate locally activated endogenous, latent ribonuclease (RNase L), which selectively cleaved the miR-96 precursor in cancer cells in a catalytic and sub-stoichiometric fashion...
May 24, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29792199/nanoparticle-delivery-of-grape-seed-derived-proanthocyanidins-to-airway-epithelial-cells-dampens-oxidative-stress-and-inflammation
#8
S Castellani, A Trapani, A Spagnoletta, L di Toma, T Magrone, S Di Gioia, D Mandracchia, G Trapani, E Jirillo, M Conese
BACKGROUND: Chronic respiratory diseases, whose one of the hallmarks is oxidative stress, are still incurable and need novel therapeutic tools and pharmaceutical agents. The phenolic compounds contained in grape are endowed with well-recognized anti-oxidant, anti-inflammatory, anti-cancer, and anti-aging activities. Considering that natural anti-oxidants, such as proanthocyanidins, have poor water solubility and oral bioavailability, we have developed a drug delivery system based on solid lipid nanoparticles (SLN), apt to encapsulate grape seed extract (GSE), containing proanthocyanidins...
May 23, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29792156/design-synthesis-and-biological-evaluation-of-1h-1-2-3-triazole-linked-1h%C3%A2-dibenzo-b-h-xanthenes-as-inductors-of-ros-mediated-apoptosis-in-the-breast-cancer-cell-line-mcf-7
#9
Carolina S Bortolot, Luana da S M Forezi, Roberta K F Marra, Marcelo I P Reis, Barbara V F E Sa, Ricardo Imbroisi Filho, Zeinab Ghasemishahrestani, Mauro Sola-Penna, Patricia Zancan, Vitor F Ferreira, Fernando de C da Silva
BACKGROUND: Low molecular weight 1,2,3-triazoles and naphthoquinones are endowed with various types of biological activity, such as against cancer, HIV and bacteria. However, in some cases, the conjugation of these two nuclei considerably increases their biological activities Objective: In this work, we decided to study the synthesis and screening of bis-naphthoquinones and xanthenes tethered to 1,2,3-triazoles against cancer cell lines, specifically the human breast cancer cell line MCF-7...
May 23, 2018: Medicinal Chemistry
https://www.readbyqxmd.com/read/29791862/hormone-dependent-breast-cancer-targeting-autophagy-and-pi3k-overcomes-exemestane-acquired-resistance
#10
Cristina Amaral, Tiago Vieira Augusto, Elisiário Tavares-da-Silva, Fernanda M F Roleira, Georgina Correia-da-Silva, Natércia Teixeira
The leading cause of cancer death in women around the world is breast cancer. The aromatase inhibitors (AIs) are considered a first-line treatment for estrogen receptor-positive (ER+ ) breast tumors, in postmenopausal women. Exemestane (Exe) is a powerful steroidal AI, however, despite its therapeutic success, Exe-acquired resistance may occur leading to tumor relapse. Our group previously demonstrated that autophagy acts as a pro-survival process in Exe-induced cell death of ER+ sensitive breast cancer cells...
May 20, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29791590/lncrna-ccat1-promotes-cell-proliferation-migration-and-invasion-by-down-regulation-of-mir-143-in-ftc-133-thyroid-carcinoma-cell-line
#11
Tianzheng Yang, Hongyan Zhai, Ruihong Yan, Zhenhu Zhou, Lei Gao, Luqing Wang
Thyroid cancer is a common malignant tumor. Long non-coding RNA colon cancer-associated transcript 1 (lncRNA CCAT1) is highly expressed in many cancers; however, the molecular mechanism of CCAT1 in thyroid cancer remains unclear. Hence, this study aimed to investigate the effect of CCAT1 on human thyroid cancer cell line FTC-133. FTC-133 cells were transfected with CCAT1 expressing vector, CCAT1 shRNA, miR-143 mimic, and miR-143 inhibitor, respectively. After different treatments, cell viability, proliferation, migration, invasion, and apoptosis were measured...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29790920/elucidating-the-role-of-the-maternal-embryonic-leucine-zipper-kinase-melk-in-adrenocortical-carcinoma
#12
Katja Kiseljak-Vassiliades, Yu Zhang, Adwitiya Kar, Raud Razzaghi, Mei Xu, Katherine Gowan, Christopher D Raeburn, Maria Albuja-Cruz, Kenneth L Jones, Hilary Somerset, Lauren Fishbein, Stephen Leong, Margaret E Wierman
Adrenocortical carcinoma (ACC) is an aggressive cancer with a five-year survival less than 35%. Mortality remains high due to lack of targeted therapies. Using bioinformatic analyses, we identified Maternal Embryonic Leucine Zipper Kinase (MELK) as 4.1-fold overexpressed in ACC compared to normal adrenal samples. High MELK expression in human tumors correlated with shorter survival and with increased expression of genes involved in cell division and growth. We investigated the functional effects of MELK inhibition using newly developed ACC cell lines with variable MELK expression, CU-ACC1 and CU-ACC2, compared with H295R cells...
May 21, 2018: Endocrinology
https://www.readbyqxmd.com/read/29790795/octa-arginine-modified-poly-amidoamine-dendrimers-for-improved-delivery-and-cytotoxic-effect-of-paclitaxel-in-cancer
#13
Sri Vishnu Kiran Rompicharla, Preeti Kumari, Balaram Ghosh, Swati Biswas
Cell penetrating peptides (CPP) have the ability to penetrate the cell membrane and have been associated with various cargos for their facile intracellular translocation. The current study involves the synthesis of a CPP, octa-arginine (R8)-modified poly(amidoamine) dendrimer of generation 4 (G4), which has additionally been PEGylated and conjugated to the poorly soluble anticancer drug, paclitaxel (PTX). The synthesized dendrimer conjugates were characterized by proton nuclear magnetic resonance (1H-NMR) Spectroscopy and zeta potential measurements and evaluated in vitro in cell monolayers and 3D spheroids...
May 23, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29790668/the-effects-of-aberrant-expression-of-lncrna-dgcr5-mir-873-5p-tusc3-in-lung-cancer-cell-progression
#14
Judong Luo, Hong Zhu, Hua Jiang, Yayun Cui, Mengjie Wang, Xinye Ni, Changsheng Ma
Lung cancer is the most common cause of cancer-related mortality worldwide, and nonsmall cell lung cancer (NSCLC) accounts for 80% of all pulmonary carcinomas. Recently, long noncoding RNAs (lncRNAs) have been paid attention for exploring treatment of various diseases. Upregulation of DiGeorge syndrome critical region gene 5 (DGCR5) predicts better lung squamous cell carcinoma prognosis; therefore, we explore the role of DGCR5 in lung cancer in our present study. Consecutive patients with LC were treated in our hospital between January 2015 and January 2016...
May 23, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29790626/sphingosine-1-phosphate-promotes-the-proliferation-and-attenuates-apoptosis-of-endothelial-progenitor-cells-via-s1pr1-s1pr3-pi3k-akt-pathway
#15
Hang Wang, Hao Huang, Shi-Fang Ding
Sphingosine-1-phosphate (S1P) is a bioactive lysophospholipid that involves in numerous pathophysiological processes. Endothelial progenitor cells (EPCs) play a crucial role in endothelial repair and tumor angiogenesis. The aim of study was to determine the effects of S1P on proliferation and anti-apoptosis of EPCs and their signaling pathways. In this study, we showed that S1P, SEW2871 (a selective S1P receptor 1 (S1PR1) agonist ), or CYM5541 (a selective S1P receptor 3 (S1PR3) allosteric agonist promotes the proliferation and attenuates apoptosis of bone marrow (BM)-derived EPCs...
May 23, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29790588/the-lncrna-casc9-and-rna-binding-protein-hnrnpl-form-a-complex-and-co-regulate-genes-linked-to-akt-signaling
#16
Marcel Klingenberg, Matthias Groß, Ashish Goyal, Maria Polycarpou-Schwarz, Thilo Miersch, Anne-Sophie Ernst, Jörg Leupold, Nitin Patil, Uwe Warnken, Heike Allgayer, Thomas Longerich, Peter Schirmacher, Michael Boutros, Sven Diederichs
The identification of viability-associated long non-coding RNAs (lncRNA) might be a promising rationale for new therapeutic approaches in liver cancer. Here, we applied the first RNAi screening approach in hepatocellular carcinoma (HCC) cell lines to find viability-associated lncRNAs. Among the multiple identified lncRNAs with a significant impact on HCC cell viability, we selected CASC9 (Cancer Susceptibility 9) due to the strength of its phenotype, expression, and upregulation in HCC versus normal liver. CASC9 regulated viability across multiple HCC cell lines as shown by CRISPR interference, single siRNA- and siPOOL-mediated depletion of CASC9...
May 23, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29790547/melissa-officinalis-l-ethanolic-extract-inhibits-the-growth-of-a-lung-cancer-cell-line-by-interfering-with-the-cell-cycle-and-inducing-apoptosis
#17
D B Magalhães, I Castro, V Lopes-Rodrigues, J M Pereira, L Barros, I C F R Ferreira, C P R Xavier, M H Vasconcelos
Melissa officinalis is a plant from the family Lamiaceae, native in Europe particularly in the Mediterranean region. Given our interest in identifying extracts and compounds capable of inhibiting tumor cell growth, and given the antioxidant content and the high consumption of Melissa officinalis in Portugal, this study aimed to test the tumor cell growth inhibitory activity of five different extracts of this plant (aqueous, methanolic, ethanolic, hydromethanolic and hydroethanolic) in three human tumor cell lines: MCF-7, AGS and NCI-H460...
May 23, 2018: Food & Function
https://www.readbyqxmd.com/read/29790525/dna-decorated-cu-9-s-5-nanoparticles-as-nir-light-responsive-drug-carriers-for-tumor-chemo-phototherapy
#18
Shuang Liang, Zhongxi Xie, Yi Wei, Ziyong Cheng, Yanqiu Han, Jun Lin
Recently, near-infrared (NIR) light responsive drug delivery systems have attracted much attention for tumor therapy. Herein, we have successfully constructed a smart nanocarrier system Cu9S5-PEI-DNA-DOX (labelled as CPD-DOX) based on the self-assembly of hydrophobic Cu9S5 nanoparticles (NPs), poly(ethylene imine) (PEI), double-stranded DNA (dsDNA) segments and the anti-cancer drug doxorubicin (DOX). Among them, Cu9S5 NPs can serve as a nano-transducer for absorbing and converting near-infrared light to heat...
May 23, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29790379/a-review-of-hydrogen-sulfide-synthesis-metabolism-and-measurement-is-modulation-of-hydrogen-sulfide-a-novel-therapeutic-for-cancer
#19
Xu Cao, Lei Ding, Zhi-Zhong Xie, Yong Yang, Matthew Whiteman, Philip K Moore, Jin-Song Bian
Hydrogen sulfide (H2S) has been recognized as the third gaseous transmitter alongside nitric oxide (NO) and carbon monoxide (CO). In the past decade, numerous studies have demonstrated an active role of H2S in the context of cancer biology. The three H2S producing enzymes namely cystathionine γ-lyase (CSE), cystathionine β-synthase (CBS) and 3-mercaptopyruvate sulfurtransferase (3MST) have been found highly expressed in numerous types of cancer. Moreover, inhibition of CBS has shown anti-tumor activity particularly in colon cancer, ovarian cancer and breast cancer, whereas the consequence of CSE or 3MST inhibition remains largely unexplored in cancer cells...
May 23, 2018: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29790374/hybrid-liposomes-showing-enhanced-accumulation-in-tumors-as-theranostic-agents-in-the-orthotopic-graft-model-mouse-of-colorectal-cancer
#20
Masaki Okumura, Hideaki Ichihara, Yoko Matsumoto
Hybrid liposomes (HLs) can be prepared by simply sonicating a mixture of vesicular and micellar molecules in a buffer solution. This study aimed to elucidate the therapeutic effects and ability of HLs to detect (diagnosis) cancer in an orthotopic graft mouse model of colorectal cancer with HCT116 cells for the use of HLs as theranostic agents. In the absence of a chemotherapeutic drug, HLs exhibited therapeutic effects by inhibiting the growth of HCT116 colorectal cancer cells in vitro, possibly through an increase in apoptosis...
November 2018: Drug Delivery
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