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https://www.readbyqxmd.com/read/29150876/toxicological-characterization-of-zno-nanoparticles-in-malignant-and-non-malignant-cells
#1
Helena Moratin, Agmal Scherzad, Thomas Gehrke, Pascal Ickrath, Katrin Radeloff, Norbert Kleinsasser, Stephan Hackenberg
The increasing usage of zinc oxide nanoparticles (ZnO-NPs) in industrial applications as well as in consumer products raises concern regarding their potential adverse effects to a greater extend. Numerous studies have demonstrated toxic properties of NPs, however there is still a lack of knowledge concerning the underlying mechanisms. This study was designed to systematically investigate cytotoxicity, apoptosis, cell cycle alterations, and genotoxicity induced by ZnO-NP. Moreover, it was an aim of the investigations to specify the diverse effects of nanoparticle exposure in malignant in comparison with non-malignant cells...
November 18, 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/29150330/the-structural-requirements-of-histone-deacetylase-inhibitors-c4-modified-saha-analogs-display-dual-hdac6-hdac8-selectivity
#2
Ahmed T Negmeldin, Joseph R Knoff, Mary Kay H Pflum
Histone deacetylase (HDAC) enzymes govern the post-translational acetylation state of lysine residues on protein substrates, leading to regulatory changes in cell function. Due to their role in cancers, HDAC proteins have emerged as promising targets for cancer treatment. Four HDAC inhibitors have been approved as anti-cancer therapeutics, including SAHA (Suberoylanilide hydroxamic acid, Vorinostat, Zolinza). SAHA is a nonselective HDAC inhibitor that targets most of the eleven HDAC isoforms. The nonselectivity of SAHA might account for its clinical side effects, but certainly limits its use as a chemical tool to study cancer-related HDAC cell biology...
October 31, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29150048/dna-dependent-protein-kinase-modulates-the-anti-cancer-properties-of-silver-nanoparticles-in-human-cancer-cells
#3
Hui Kheng Lim, Resham Lal Gurung, M Prakash Hande
Silver nanoparticles (Ag-np) were reported to be toxic to eukaryotic cells. These potentially detrimental effects of Ag-np can be advantageous in experimental therapeutics. They are currently being employed to enhance the therapeutic efficacy of cancer drugs. In this study, we demonstrate that Ag-np treatment trigger the activation of DNA-PKcs and JNK pathway at selected doses, presumably as a physiologic response to DNA damage and repair in normal and malignant cells. Ag-np altered the telomere dynamics by disrupting the shelterin complex located at the telomeres and telomere lengths...
December 2017: Mutation Research
https://www.readbyqxmd.com/read/29148840/resveratrol-induces-mitochondrial-apoptosis-and-inhibits-epithelial-mesenchymal-transition-in-oral-squamous-cell-carcinoma-cells
#4
Seong-Eon Kim, Sang-Hun Shin, Jae-Yeol Lee, Chul-Hoon Kim, In-Kyo Chung, Hae-Mi Kang, Hae-Ryoun Park, Bong-Soo Park, In-Ryoung Kim
OSCC is the most common malignant cancer of the head and neck. EMT is an essential cellular process critical to the morphogenesis and homeostasis of solid tissues. It is also involved in the initial stage of cancer metastasis and invasion in which cells lose epithelial characteristics. While cancer therapy protocols such as surgery, radiation, and chemotherapy are effective and useful, the drug tolerance and toxicity of OSCC patients remain a problem. Resveratrol is mainly produced in red grape skin and exhibits anti-oxidative, anti-inflammatory, anti-proliferative, and anti-cancer properties...
November 17, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/29147627/stat1-gene-deficient-mice-develop-accelerated-breast-cancer-growth-and-metastasis-which-is-reduced-by-il-17-blockade
#5
Sanjay Varikuti, Steve Oghumu, Mohamad Elbaz, Greta Volpedo, Dinesh K Ahirwar, Pablo C Alarcon, Rachel H Sperling, Ellen Moretti, Marissa S Pioso, Jennifer Kimble, Mohd W Nasser, Ramesh K Ganju, Cesar Terrazas, Abhay R Satoskar
Signal transducer and activator of transcription 1 (STAT1) mediates interferon gamma signaling which activates the expression of various genes related to apoptosis, inflammation, cell cycle and angiogenesis. Several experimental and clinical studies have investigated the role of STAT1 in primary tumor growth in breast cancer; however, its role in tumor metastasis remains to be determined. To determine the role of STAT1 in breast cancer metastasis, we analyzed growth and metastasis in WT or STAT1(-/-) mice orthotopically implanted with metastatic 4T1...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29147611/chloroquine-supplementation-increases-the-cytotoxic-effect-of-curcumin-against-her2-neu-overexpressing-breast-cancer-cells-in-vitro-and-in-vivo-in-nude-mice-while-counteracts-it-in-immune-competent-mice
#6
L Masuelli, M Granato, M Benvenuto, R Mattera, R Bernardini, M Mattei, G d'Amati, G D'Orazi, A Faggioni, R Bei, M Cirone
Autophagy is usually a pro-survival mechanism in cancer cells, especially in the course of chemotherapy, thus autophagy inhibition may enhance the chemotherapy-mediated anti-cancer effect. However, since autophagy is strongly involved in the immunogenicity of cell death by promoting ATP release, its inhibition may reduce the immune response against tumors, negatively influencing the overall outcome of chemotherapy. In this study, we evaluated the in vitro and in vivo anti-cancer effect of curcumin (CUR) against Her2/neu overexpressing breast cancer cells (TUBO) in the presence or in the absence of the autophagy inhibitor chloroquine (CQ)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29147526/a-ratiometric-fluorescent-probe-for-imaging-and-quantifying-anti-apoptotic-effects-of-gsh-under-temperature-stress
#7
Xiaoyue Han, Xinyu Song, Fabiao Yu, Lingxin Chen
Hypothermia and hyperthermia are cell stressed states resulting from environmental temperature changes, which can abnormally decrease intracellular glutathione (GSH) concentrations and induce apoptosis. As the most abundant intracellular non-protein biothiol, GSH can protect cells from apoptosis. Considering the important roles of GSH in the anti-apoptotic process in cells and in vivo, we strive to develop a powerful chemical tool for the direct detection of GSH concentration changes under temperature stress...
October 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29146961/identification-of-host-dead-box-rna-helicases-that-regulate-cellular-tropism-of-oncolytic-myxoma-virus-in-human-cancer-cells
#8
Masmudur M Rahman, Eugenie Bagdassarian, Mohamed A M Ali, Grant McFadden
Myxoma virus (MYXV), a Leporipoxvirus, is being developed as an oncolytic virotherapeutic for the treatment of a variety of human cancers. MYXV tropism for human cancer cells is largely mediated by intracellular signaling networks that regulate viral replication or innate antiviral response pathways. Thus, MYXV is fully or partially permissive for the majority of human cancer cells that harbor defects in antiviral signaling, but a minority are nonpermissive because the virus infection aborts before its completion...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146881/beta-adrenergic-signaling-impairs-anti-tumor-cd8-t-cell-responses-to-b-cell-lymphoma-immunotherapy
#9
Michael D Nissen, Erica K Sloan, Stephen R Mattarollo
Beta-adrenergic receptor (betaAR) signaling regulates many physiological processes, including immune system responses. There is growing evidence also for betaAR-induced modulation of cancer growth and metastasis. In the Eu-myc mouse model of B-cell lymphoma, we investigated the effects of chronically elevated betaAR signaling on lymphoma progression and anti-tumor immunity, as well as the impact on cancer immunotherapy. Chronic treatment with the non-selective beta-agonist isoprenaline promoted lymphoma development in a manner dependent on signaling within the hematopoietic compartment...
November 16, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/29146737/rheumatic-disorders-associated-with-immune-checkpoint-inhibitors-in-patients-with-cancer-clinical-aspects-and-relationship-with-tumour-response-a-single-centre-prospective-cohort-study
#10
Marie Kostine, Léa Rouxel, Thomas Barnetche, Rémi Veillon, Florent Martin, Caroline Dutriaux, Léa Dousset, Anne Pham-Ledard, Sorilla Prey, Marie Beylot-Barry, Amaury Daste, Marine Gross-Goupil, Julie Lallier, Alain Ravaud, Edouard Forcade, Bernard Bannwarth, Marie-Elise Truchetet, Christophe Richez, Nadia Mehsen, Thierry Schaeverbeke
OBJECTIVES: To evaluate the prevalence and type of rheumatic immune-related adverse events (irAEs) in patients receiving immune checkpoint inhibitors (ICIs), as well as the correlation with tumour response. METHODS: This was a single-centre prospective observational study including all cancer patients receiving ICIs. The occurrence of irAEs and tumour response was assessed on a regular basis. Patients who experienced musculoskeletal symptoms were referred to the department of rheumatology for clinical evaluation and management...
November 16, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29146698/characterization-of-site-specifically-conjugated-monomethyl-auristatin-e-and-duocarmycin-based-anti-psma-antibody-drug-conjugates-for-treatment-of-psma-expressing-tumors
#11
Susanne Lütje, Danny Gerrits, Janneke D Molkenboer-Kuenen, Ken Herrmann, Giulio Fracasso, Marco Colombatti, Otto C Boerman, Sandra Heskamp
Rationale: Prostate cancer (PCa) is the most common cancer in men worldwide. In general, PCa responds poorly to chemotherapy. Therefore, antibody-drug conjugates (ADCs) have been developed to specifically deliver highly cytotoxic drugs to the tumor. As the prostate-specific membrane antigen (PSMA) is overexpressed in PCa, it represents a promising target for ADC-based therapies. The aim of this study was to evaluate the therapeutic efficacy of site-specifically conjugated duocarmycin- and monomethyl auristatin E (MMAE)-based anti-PSMA ADCs with drug-antibody ratios (DARs) of 2 and 4...
November 16, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29146630/a-role-for-cxcr4-in-peritoneal-and-hematogenous-ovarian-cancer-dissemination
#12
Agnes Figueras, Elisenda Alsina-Sanchís, Alvaro Lahiguera, Manuel Abreu, Laura Muinelo-Romay, Gema Moreno-Bueno, Oriol Casanovas, Mariona Graupera, Xavier Matias-Guiu, August Vidal, Alberto Villanueva, Francesc Viñals
Epithelial ovarian cancer is characterized by a low recovery rate because the disease is typically diagnosed at an advanced stage, by which time, most patients (80%) already exhibit disseminated neoplasia. The cytokine receptor CXCR4 has been implicated in the development of metastasis in various tumor types. Using a patient-derived tissue macroarray and mRNA expression analysis we observed high CXCR4 levels in high-grade serous epithelial ovarian carcinomas, the most metastatic tumor, compared with those in endometrioid carcinomas...
November 16, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29146617/cure-in-advanced-renal-cell-cancer-is-it-an-achievable-goal
#13
Dhanusha Sabanathan, John J Park, Manuel Marquez, Louise Francisco, Natalie Byrne, Howard Gurney
BACKGROUND: Immunotherapy has historically been of interest in the management of metastatic renal cell cancer (mRCC) because of its relative chemoresistance and the reproducible but low incidence of spontaneous remission in metastatic disease. Recently, targeted immunotherapies in the form of checkpoint inhibitors have shown durable responses in approximately 20%-30% of patients with solid tumors, with a much more acceptable side-effect profile. Anti-programmed death receptor 1 (PD-1)/programmed death receptor ligand 1 antibodies rely on the presence of host T cells in the tumor microenvironment to be stimulated in order to activate an antitumor response...
November 16, 2017: Oncologist
https://www.readbyqxmd.com/read/29146616/therapeutic-potential-of-afatinib-for-cancers-with-erbb2-her2-transmembrane-domain-mutations-g660d-and-v659e
#14
Hiromasa Yamamoto, Shinichi Toyooka, Takashi Ninomiya, Shigemi Matsumoto, Masashi Kanai, Shuta Tomida, Katsuyuki Kiura, Manabu Muto, Ken Suzawa, Patrice Desmeules, Mark G Kris, Bob T Li, Marc Ladanyi
We previously reported on a family with hereditary lung cancer, in which a germline mutation in the transmembrane domain (G660D) of avian erythroblastic leukemia viral oncogene homolog 2 (erb-b2 receptor tyrosine kinase 2) (ERBB2; human epidermal growth factor receptor 2 [HER2]) seemed to be responsible for the cancer predisposition. Although few data are available on treatment, anti-ERBB2 therapeutic agents may be effective for ERBB2-mutant cancers. The familial lung cancer patient in one of the authors' institutes developed bone metastasis with enlarging lung tumors and was treated with the ERBB2 inhibitor afatinib...
November 16, 2017: Oncologist
https://www.readbyqxmd.com/read/29146183/d-rhamnose-%C3%AE-hederin-inhibits-migration-and-invasion-of-human-breast-cancer-cell-line-mda-mb-231
#15
Lin Cheng, Tian-Song Xia, Liang Shi, Lingyun Xu, Weixian Chen, Yulan Zhu, Qiang Ding
Many natural products have been shown to have inhibitory effects on the metastatic process of various cancers including breast cancer. An active triterpenoid saponin D Rhamnose β-hederin (DRβ-H) from Clematis ganpiniana, has been known induce the apoptosis of breast cancer cells, but the effect of DRβ-H on the metastasis of breast cancer cells is largely unknown. In this study, we demonstrated that a non-cytotoxic concentration of DRβ-H markedly suppressed wound healing migration, migration through the chamber and invasion through the matrigel...
November 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29145976/not-only-p-glycoprotein-amplification-of-the-abcb1-containing-chromosome-region-7q21-confers-multidrug-resistance-upon-cancer-cells-by-coordinated-overexpression-of-an-assortment-of-resistance-related-proteins
#16
Ilaria Genovese, Andrea Ilari, Yehuda G Assaraf, Francesco Fazi, Gianni Colotti
The development of drug resistance continues to be a dominant hindrance toward curative cancer treatment. Overexpression of a wide-spectrum of ATP-dependent efflux pumps, and in particular of ABCB1 (P-glycoprotein or MDR1) is a well-known resistance mechanism for a plethora of cancer chemotherapeutics including for example taxenes, anthracyclines, Vinca alkaloids, and epipodopyllotoxins, demonstrated by a large array of published papers, both in tumor cell lines and in a variety of tumors, including various solid tumors and hematological malignancies...
May 2017: Drug Resistance Updates: Reviews and Commentaries in Antimicrobial and Anticancer Chemotherapy
https://www.readbyqxmd.com/read/29145850/targeting-protein-quality-control-pathways-in-breast-cancer
#17
REVIEW
Sara Sannino, Jeffrey L Brodsky
The efficient production, folding, and secretion of proteins is critical for cancer cell survival. However, cancer cells thrive under stress conditions that damage proteins, so many cancer cells overexpress molecular chaperones that facilitate protein folding and target misfolded proteins for degradation via the ubiquitin-proteasome or autophagy pathway. Stress response pathway induction is also important for cancer cell survival. Indeed, validated targets for anti-cancer treatments include molecular chaperones, components of the unfolded protein response, the ubiquitin-proteasome system, and autophagy...
November 16, 2017: BMC Biology
https://www.readbyqxmd.com/read/29145543/association-of-ipilimumab-with-safety-and-antitumor-activity-in-women-with-metastatic-or-recurrent-human-papillomavirus-related-cervical-carcinoma
#18
Stephanie Lheureux, Marcus O Butler, Blaise Clarke, Mihaela C Cristea, Lainie P Martin, Katia Tonkin, Gini F Fleming, Anna V Tinker, Hal W Hirte, Daliah Tsoref, Helen Mackay, Neesha C Dhani, Prafull Ghatage, Johanne Weberpals, Stephen Welch, Nhu-An Pham, Vinicius Motta, Valentin Sotov, Lisa Wang, Katherine Karakasis, Smitha Udagani, Suzanne Kamel-Reid, Howard Z Streicher, Patricia Shaw, Amit M Oza
Importance: Based on evidence of human papillomavirus (HPV)-induced immune evasion, immunotherapy may be an attractive strategy in cervical cancer. Ipilimumab is a fully humanized monoclonal antibody that blocks cytotoxic T-lymphocyte antigen-4 (CTLA-4), which acts to downregulate the T-cell immune response. Objective: To assess the safety and antitumor activity of ipilimumab in recurrent cervical cancer. Design, Setting, and Participants: A multicenter trial was designed for patients with metastatic cervical cancer (squamous cell carcinoma or adenocarcinoma) with measurable disease and progression after at least 1 line of platinum chemotherapy...
November 16, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/29145329/new-onset-of-myasthenia-gravis-after-intravesical-bacillus-calmette-guerin-a-case-report-and-literature-review
#19
Tsubasa Takizawa, Marenori Kojima, Shigeaki Suzuki, Takashi Osada, Satoshi Kitagawa, Jin Nakahara, Shinichi Takahashi, Norihiro Suzuki
RATIONALE: Recently, drug-related myasthenia gravis (MG) has received attention, because the number of reported cases involving MG associated with immune checkpoint inhibitors, a new immunotherapy, is increasing. We present a case involving the new onset of MG, in which the symptoms started shortly after intravesical Bacillus Calmette-Guerin (BCG) for bladder cancer. PATIENT CONCERNS: A 69-year-old male with bladder cancer developed ptosis and diplopia 4 days after the completion of a treatment regimen with intravesical BCG weekly for 6 weeks...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145153/the-pro-apoptosis-effect-of-sinomenine-in-renal-carcinoma-via-inducing-autophagy-through-inactivating-pi3k-akt-mtor-pathway
#20
Fei Deng, Yue-Xian Ma, Liang Liang, Ping Zhang, Jing Feng
Renal cell carcinoma (RCC) is a heterogeneous histological disease and the most common kidney cancer. The mortality rate of RCC remains high despite the improved treatment. Sinomenine is an isoquinoline extracted from Chinese medicinal plant Sinomenium acutum, famous for its ability to suppress several cancer cell types. Our research aimed to explore the anti-cancer potential of sinomenine in RCC. Results showed that sinomenine reduced the viability by reducing sphere-forming ability and enhancing pro-apoptosis effect in ACHN cells in a dose dependent manner...
November 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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