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https://www.readbyqxmd.com/read/29050435/immune-enhancing-activity-of-phosvitin-by-stimulating-the-production-of-pro-inflammatory-mediator
#1
J H Lee, S H Moon, H S Kim, E Park, D U Ahn, H D Paik
Egg yolk phosvitin is one of the most phosphorylated proteins in nature, and the extraordinarily high concentration of phosphate groups in its structure provides a strong metal-binding ability. Phosvitin is known to possess various functional activities, including metal-chelating, antioxidant, emulsifying, antimicrobial, and cytotoxic activities. However, little is known about the immune-enhancing activity of phosvitin. The objective of this study was to evaluate the immune-enhancing activity of phosvitin in murine RAW 264...
September 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/29050360/immunomodulatory-and-antitumor-effects-of-type-i-interferons-and-their-application-in-cancer-therapy
#2
REVIEW
Ruan F V Medrano, Aline Hunger, Samir Andrade Mendonça, José Alexandre M Barbuto, Bryan E Strauss
During the last decades, the pleiotropic antitumor functions exerted by type I interferons (IFNs) have become universally acknowledged, especially their role in mediating interactions between the tumor and the immune system. Indeed, type I IFNs are now appreciated as a critical component of dendritic cell (DC) driven T cell responses to cancer. Here we focus on IFN-α and IFN-β, and their antitumor effects, impact on immune responses and their use as therapeutic agents. IFN-α/β share many properties, including activation of the JAK-STAT signaling pathway and induction of a variety of cellular phenotypes...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050337/comprehensive-immune-transcriptomic-analysis-in-bladder-cancer-reveals-subtype-specific-immune-gene-expression-patterns-of-prognostic-relevance
#3
Runhan Ren, Kathrin Tyryshkin, Charles H Graham, Madhuri Koti, D Robert Siemens
Recent efforts on genome wide profiling of muscle invasive bladder cancer (MIBC) have led to its classification into distinct genomic and transcriptomic molecular subtypes that exhibit variability in prognosis. Evolving evidence from recent immunotherapy trials has demonstrated the significance of pre-existing tumour immune profiles that could guide treatment decisions. To identify immune gene expression patterns associated with the molecular subtypes, we performed a comprehensive in silico immune transcriptomic profiling, utilizing transcriptomic data from 347 MIBC cases from The Cancer Genome Atlas (TCGA)...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050323/histone-deacetylase-inhibitor-thailandepsin-a-activates-notch-signaling-and-suppresses-neuroendocrine-cancer-cell-growth-in-vivo
#4
Samuel Jang, Andrew Janssen, Zviadi Aburjania, Matthew B Robers, April Harrison, Ajitha Dammalapati, Yi-Qiang Cheng, Herbert Chen, Renata Jaskula-Sztul
Novel therapies for neuroendocrine (NE) cancers are desperately needed as they frequently present as metastatic disease and cause debilitating symptoms by secreting excessive hormones. Induction of Notch isoforms has a tumor suppressive effect in NE cancer cell lines, and we have observed that histone deacetylase inhibitors (HDACi) potently activate Notch. In this study, we describe the potential for Burkholderia thailandensis-derived class I HDACi thailandepsin A (TDP-A) as a Notch activator and therapeutic agent against NE cancer...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050305/calyxin-y-sensitizes-cisplatin-sensitive-and-resistant-hepatocellular-carcinoma-cells-to-cisplatin-through-apoptotic-and-autophagic-cell-death-via-scf-%C3%AE-trcp-mediated-eef2k-degradation
#5
Chao Zhang, Jian-Li Lei, Hao Zhang, Yuan-Zheng Xia, Pei Yu, Lei Yang, Ling-Yi Kong
The down-regulation of eukaryotic elongation factor-2 kinase (eEF2K) is associated with an enhancement in the sensitivity of malignant cells to chemotherapeutic agents. In this study, we found that the silencing of eEF2K enhanced cisplatin (CDDP)-induced cytotoxicity in CDDP-sensitive (HepG2) and resistant (HepG2/CDDP) cells. Calyxin Y, a unique chalcone diarylheptanoid adduct, down-regulated eEF2K by promoting Skp1-Cul1-F-box protein (SCF) β-transducin repeat-containing protein (βTrCP)-mediated protein degradation and synergistically enhanced the cytotoxicity of CDDP...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050290/gmi-ablates-cancer-stemness-and-cisplatin-resistance-in-oral-carcinomas-stem-cells-through-il-6-stat3-signaling-inhibition
#6
Tung Yuan Wang, Cheng-Chia Yu, Pei-Ling Hsieh, Yi-Wen Liao, Chuan-Hang Yu, Ming-Yung Chou
Cancer stem cells (CSCs) have been identified to exert tumor-initiating ability, resulting in the recurrence, metastasis and chemoresistance of oral squamous cell carcinomas. In the present study, we showed that GMI, an immunomodulatory protein from Ganoderma microsporum, induc ed a cytotoxic effect in oral carcinomas stem cells (OCSCs). Treatment of GMI dose-dependently inhibited the expression of CSC markers, including ALDH1 activity and CD44 positivity. Moreover, GMI suppressed the self-renewal property, colony formation, migration, and invasion abilities as well as potentiated chemo-sensitivity in OCSCs...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050265/reactive-oxygen-species-dependent-phosphorylation-of-the-liver-kinase-b1-amp-activated-protein-kinase-acetyl-coa-carboxylase-signaling-is-critically-involved-in-apoptotic-effect-of-lambertianic-acid-in-hepatocellular-carcinoma-cells
#7
Arong Jeong, Ju-Ha Kim, Hyo-Jung Lee, Sung-Hoon Kim
Though lambertianic acid (LA) is reported to have hypolipidemic activity in liver, its underlying anticancer mechanism is poorly understood so far. Thus, in the present study, apoptotic mechanism of LA was elucidated in HepG2 and SK-Hep1 hepatocellular carcinoma (HCC) cells. Here LA increased cytotoxicity, sub-G1 population and Annexin V/PI positive cells in two HCC cells. Also, LA cleaved caspase-3 and poly(ADP-ribose) polymerase (PARP), activated phosphorylation of liver kinase B1 (LKB1)/AMP activated protein kinase (AMPK)/ acetyl-CoA carboxylase (ACC) pathway and also suppressed antiapoptotic proteins such as phosphorylation of Akt/ mammalian target of rapamycin (mTOR) and the expression of B cell lymphoma-2 (Bcl-2)/ B-cell lymphoma-extra large (Bcl-xL) and cyclooxygenase-2 (COX-2) in two HCC cells...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050241/combination-treatment-with-rucaparib-rubraca-and-mdm2-inhibitors-nutlin-3-and-rg7388-has-synergistic-and-dose-reduction-potential-in-ovarian-cancer
#8
Maryam Zanjirband, Nicola Curtin, Richard J Edmondson, John Lunec
Ovarian cancer is the seventh most common cancer worldwide for females and the most lethal of all gynecological malignancies. The treatment of ovarian cancer remains a challenge in spite of advances in debulking surgery and changes in both chemotherapy schedules and routes of administration. Cancer treatment has recently been improving with the introduction of targeted therapies to achieve greater specificity and less cytotoxicity. Both PARP inhibitors and MDM2-p53 binding antagonists are targeted therapeutic agents entered into clinical trials...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050217/triterpenoids-from-aglaia-abbreviata-exert-cytotoxicity-and-multidrug-resistant-reversal-effect-in-mcf-7-adm-cells-via-reactive-oxygen-species-induction-and-p-glycoprotein-inhibition
#9
Juan Cen, Beibei Zheng, Rubing Bai, Li Zhang, Feng Zhang, Xia Zhang
Triterpenoids from the Aglaia have been shown cytotoxicity on a broad spectrum of human tumor cells. In the present study, we extracted triterpenoids AA-5 (1) and AA-6 (2) from stems of Aglaia abbreviata, and studied their cytotoxicity in multidrug resistant (MDR) MCF-7/ADM cells. After 48 h treatment, AA-5 (1) and AA-6 (2) significantly increased mitochondrial-mediated apoptosis by enhancing reactive oxygen species (ROS) with depressed mitochondrial membrane potential and caspase-9 activities. The drug efflux transporter P-glycoprotein (P-gp) and the intracellular antioxidant systems, involving Glutathione S-Transferase π, Glutathione and heme oxygenase-1, were also inhibited via the ROS-depressed Akt/NF-E2-related factor 2 pathway...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29050075/-specific-cytotoxicity-of-a-novel-her2-based-chimeric-antigen-receptor-modified-t-lymphocytes-against-her2-positive-tumor-cells
#10
H J Tang, Y Q Liu, X C Bian, H L Feng, B Gu, H Sun, C X Zuo, F Y Zhou, J Liu
Objective: To construct the third generation chimeric antigen receptor based on a novel humanized anti-HER2 H1-2 scFv, and to investigate the specific cytotoxicity of H1-2 CAR modified T lymphocytes(CAR-T) against HER2(+) tumor cells. Method: The expression cassette of the third generation CAR gene and anti-HER2 H1-2 scFv were constructed and cloned into lentivirus transfer plasmid, and then the third generation H1-2 CAR was transduced into human T lymphocytes using lentivirus.Enzyme linked immunosorbent assay was used to detect the expression of cytokines IL2, and LDH release assay was used to detect the cytotoxic effect of the H1-2 CAR-T...
October 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29050003/cantharidin-inhibits-the-growth-of-triple-negative-breast-cancer-cells-by-suppressing-autophagy-and-inducing-apoptosis-in-vitro-and-in-vivo
#11
Hong-Chang Li, Zhi-Hua Xia, Ya-Feng Chen, Fan Yang, Wen Feng, Han Cai, Yi Mei, Yi-Ming Jiang, Ke Xu, Dian-Xu Feng
BACKGROUND/AIMS: Cantharidin, a type of terpenoid secreted by the blister beetle Mylabris phalerata (Pallas), has attracted great attention in cancer therapy because of its potential anti-cancer activities. Here, we report the effects on apoptosis and autophagy in human triple-negative breast cancer (TNBC) cell lines after treatment with cantharidin and attempt to elucidate the underlying mechanisms. METHODS: MDA-MB-231 and MDA-MB-468 cells were treated with cantharidin and cell proliferation was examined using CCK-8 and clone formation assays...
October 19, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29049998/endoplasmic-reticulum-stress-is-involved-in-cochlear-cell-apoptosis-in-a-cisplatin-induced-ototoxicity-rat-model
#12
Shimin Zong, Tianyi Liu, Fangmin Wan, Pei Chen, Pan Luo, Hongjun Xiao
Endoplasmic reticulum (ER) stress arises when excessive improperly folded proteins accumulate in the ER lumen. When ER stress occurs, the unfolded protein response (UPR) is subsequently activated to restore ER proteostasis. However, severe ER stress leads to apoptosis. Recent studies have suggested that cisplatin cytotoxicity may be related to ER stress. The purpose of this study was to determine whether ER stress participates in cochlear cell apoptosis in a cisplatin-induced ototoxicity rat model and to also determine the possible relationship between ER stress and hearing loss...
October 20, 2017: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/29049953/biomimetic-fabrication-of-antibacterial-calcium-phosphates-mediated-by-polydopamine
#13
Lucia Forte, Paola Torricelli, Francesca Bonvicini, Elisa Boanini, Giovanna Angela Gentilomi, Gigliola Lusvardi, Elena Della Bella, Milena Fini, Edoardo Vecchio Nepita, Adriana Bigi
In this work we developed new antibacterial composite materials using polydopamine (PDA) to trigger the deposition of silver nanoparticles (AgNPs) onto calcium phosphates, namely octacalcium phosphate (OCP) and α-tricalcium phosphate (αTCP). Functionalization of OCP and αTCP with a self-polymerized polydopamine layer was obtained by soaking the calcium phosphates in dopamine solution. The PDA surface of functionalized calcium phosphates (OCPd and αTCPd) promoted the deposition of AgNPs by reducing silver ions when soaked in a silver nitrate solution...
October 10, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29049940/photocatalytic-degradation-of-synthetic-food-dye-sunset-yellow-fcf-fd-c-yellow-no-6-by-ailanthus-excelsa-roxb-possessing-antioxidant-and-cytotoxic-activity
#14
Subramanyam Deepika, Rajendran Harishkumar, Murugesan Dinesh, Rajadurai Abarna, Moorthy Anbalagan, Selvaraj Mohana Roopan, Chinnadurai Immanuel Selvaraj
The purpose of our work is to identify the bioactive compounds of bark and leaves extract from Ailanthus excelsa Roxb. and to explore its effectiveness against synthetic food dye. The presence of primary and secondary metabolites was confirmed by carrying out phytochemicals analysis. With the prior knowledge accessible on the indispensable secondary metabolites holding antioxidant and cytotoxicity activity, the quantitative screening of total phenolic and flavonoid content in methanolic and aqueous extract of bark and leaves from Ailanthus excelsa were done...
October 12, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29049914/t-2-toxin-induces-cytotoxicity-and-disrupts-tight-junction-barrier-in-serw3-cells
#15
Elif Karacaoğlu, Güldeniz Selmanoğlu
T-2 toxin, which is produced in grain and grain products as a secondary metabolite by Fusarium species, is also potentially dangerous for human health. Up to date, no study was reported the cytotoxicity of T-2 toxin on SerW3 cells in the perspective of junctional barriers. This study focused on revealing the cytotoxic effects of T-2 on Sertoli cells associated with cell junctional barriers. In the present study, SerW3 cells were exposed to T-2 toxin at 12, 120 and 1200ng/ml doses for 24 and 48h. Cytotoxicity tests including cell viability (MTT), lactate dehydrogenase (LDH) cytotoxicity test and trypan blue exclusion assay were performed...
October 12, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29049844/flavonoids-inhibit-chronically-exposed-arsenic-induced-proliferation-and-malignant-transformation-of-hacat-cells
#16
Mohit Rajput, Praveen Kumar Kujur, Abhijeet Mishra, Rana P Singh
BACKGROUND: Apart from exposure to UV-radiation, studies show relationship between skin cancer and chronic ingestion of arsenic through drinking water. Chemopreventive strategies could help in reducing the toxic effects of arsenic and arsenic-induced skin cancer. METHODS: Cytotoxicity of arsenic on human skin keratinocytes HaCaT cells was evaluated using MTT and trypan blue assays. Arsenic-induced malignant transformant HaCaT cells were selected through soft agar colony assay...
October 19, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/29049722/a-ppar-gamma-agonist-rosiglitazone-suppresses-fibrotic-response-in-human-pterygium-fibroblasts-by-modulating-the-p38-mapk-pathway
#17
Selikem Abla Nuwormegbe, Joon Hyung Sohn, Sun Woong Kim
Purpose: Fibroblast activation may play an important role in pterygium progression. Synthetic peroxisome proliferator-activated receptor γ (PPAR-γ) ligands have been shown to be effective antifibrotic agents against transforming growth factor β1 (TGF-β1) induced fibrosis in several tissues. We aimed to investigate the antifibrotic effects of the PPAR-γ ligand rosiglitazone in pterygium fibroblasts and the underlying mechanisms. Methods: Profibrotic activation was induced by TGF-β1 in primary cultured human pterygium fibroblasts and the effect of rosiglitazone treatment on α-smooth muscle actin (α-SMA), and extra cellular matrix proteins synthesis was detected by western blotting, real-time PCR, immunostaining, and flow cytometry...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29049607/dose-response-association-of-cd8-tumor-infiltrating-lymphocytes-and-survival-time-in-high-grade-serous-ovarian-cancer
#18
Ellen L Goode, Matthew S Block, Kimberly R Kalli, Robert A Vierkant, Wenqian Chen, Zachary C Fogarty, Aleksandra Gentry-Maharaj, Aleksandra Toloczko, Alexander Hein, Aliecia L Bouligny, Allan Jensen, Ana Osorio, Andreas D Hartkopf, Andy Ryan, Anita Chudecka-Glaz, Anthony M Magliocco, Arndt Hartmann, Audrey Y Jung, Bo Gao, Brenda Y Hernandez, Brooke L Fridley, Bryan M McCauley, Catherine J Kennedy, Chen Wang, Chloe Karpinskyj, Christiani B de Sousa, Daniel G Tiezzi, David L Wachter, Esther Herpel, Florin Andrei Taran, Francesmary Modugno, Gregg Nelson, Jan Lubinski, Janusz Menkiszak, Jennifer Alsop, Jenny Lester, Jesús García-Donas, Jill Nation, Jillian Hung, José Palacios, Joseph H Rothstein, Joseph L Kelley, Jurandyr M de Andrade, Luis Robles-Díaz, Maria P Intermaggio, Martin Widschwendter, Matthias W Beckmann, Matthias Ruebner, Mercedes Jimenez-Linan, Naveena Singh, Oleg Oszurek, Paul R Harnett, Peter F Rambau, Peter Sinn, Philipp Wagner, Prafull Ghatage, Raghwa Sharma, Robert P Edwards, Roberta B Ness, Sandra Orsulic, Sara Y Brucker, Sharon E Johnatty, Teri A Longacre, Ursula Eilber, Valerie McGuire, Weiva Sieh, Yanina Natanzon, Zheng Li, Alice S Whittemore, Anna deFazio, Annette Staebler, Beth Y Karlan, Blake Gilks, David D Bowtell, Estrid Høgdall, Francisco J Candido Dos Reis, Helen Steed, Ian G Campbell, Jacek Gronwald, Javier Benítez, Jennifer M Koziak, Jenny Chang-Claude, Kirsten B Moysich, Linda E Kelemen, Linda S Cook, Marc T Goodman, María José García, Peter A Fasching, Stefan Kommoss, Suha Deen, Susanne K Kjaer, Usha Menon, James D Brenton, Paul D P Pharoah, Georgia Chenevix-Trench, David G Huntsman, Stacey J Winham, Martin Köbel, Susan J Ramus
Importance: Cytotoxic CD8+ tumor-infiltrating lymphocytes (TILs) participate in immune control of epithelial ovarian cancer; however, little is known about prognostic patterns of CD8+ TILs by histotype and in relation to other clinical factors. Objective: To define the prognostic role of CD8+ TILs in epithelial ovarian cancer. Design, Setting, and Participants: This was a multicenter observational, prospective survival cohort study of the Ovarian Tumor Tissue Analysis Consortium...
October 12, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/29048704/hydroxyapatite-decreases-cytotoxicity-of-a-glass-ionomer-cement-by-calcium-fluoride-uptake-in-vitro
#19
Casiano Del Angel-Mosqueda, Rene Hernandez-Delgadillo, Osvelia E Rodríguez-Luis, María T Ramírez-Rodríguez, Silvia Munguía-Moreno, Norma V Zavala-Alonso, Juan M Solís-Soto, María A A Nakagoshi-Cepeda, Rosa I Sánchez-Nájera, Sergio E Nakagoshi-Cepeda, Claudio Cabral-Romero
BACKGROUND: Glass ionomer cements (GICs) are widely used in dentistry because of their remineralizing and cariostatic potential induced by fluoride. In vitro studies have reported cell toxicity triggered by GICs; however, the influence of hydroxyapatite (HAp) must be considered. The aim of this study was to evaluate the effect of HAp in decreasing the cytotoxicity of the GIC 3M Vitrebond in vitro. METHODS: Samples of 3M Vitrebond (powder, liquid and light-cured) were incubated in Dulbecco's modified Eagle's medium-Ham's F12 (DMEM-F12) for 24 hours at 37°C...
October 14, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/29048671/adoptive-immunotherapy-combined-with-fp-treatment-for-head-and-neck-cancer-an-in%C3%A2-vitro-study
#20
Mayako Nishio-Nagai, Susumu Suzuki, Kazuhiro Yoshikawa, Ryuzo Ueda, Yoshiaki Kazaoka
FP treatment, which combines 5-fluorouracil (5-FU) and cisplatin (CDDP) chemotherapy, is widely used for treatment of advanced head and neck cancer (HNC). It has been suggested that these drugs cause immunomodulation in the cancer microenvironment, for example, downregulation of immunosuppressive cells such as regulatory T-cells (Tregs) and myeloid-derived suppressive cells (MDSCs), activating dendritic cells (DCs), and upregulation of tumor antigens and major histocompatibility complex (MHC) molecules in cancer cells leads to enhancement of cancer immunity, which is important in cancer treatment, as well as providing a direct killing effect...
October 2, 2017: International Journal of Oncology
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