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https://www.readbyqxmd.com/read/28528134/enhancing-tumor-cell-response-to-multidrug-resistance-with-ph-sensitive-quercetin-and-doxorubicin-conjugated-multifunctional-nanoparticles
#1
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/28527911/cancer-stem-cells-at-the-forefront-of-personalized-medicine-and-immunotherapy
#2
REVIEW
Micol E Fiori, Lidia Villanova, Ruggero De Maria
Cancer stem cells (CSCs) represent the main target of the current efforts to eradicate cancer, because of their ability to promote metastatic dissemination and survive cytotoxic therapies. Here, we highlight the potential of patient-derived CSCs as an in vitro and in vivo pre-clinical model and of liquid biopsy as a diagnostic, prognostic and predictive tool. We discuss recently developed therapeutic strategies aiming at specifically targeting the cancer stem cell population, particularly focusing on the latest advances in cancer immunotherapy...
May 18, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28527651/clinical-efficacy-of-cycling-empirical-antibiotic-therapy-for-febrile-neutropenia-in-pediatric-cancer-patients
#3
Hideto Teranishi, Yuhki Koga, Hisanori Nishio, Wakako Kato, Hiroaki Ono, Shunsuke Kanno, Kentaro Nakashima, Hidetoshi Takada
BACKGROUND: Febrile neutropenia (FN) is the main treatment-related cause of mortality among children with cancer, as the prolonged use of broad-spectrum antibiotics can lead to antibiotic resistance in these patients. Antibiotic cycling has been reported to limit the emergence of antibiotic-resistant bacteria among adult patients. However, no studies have evaluated pediatric patients with FN. METHODS: Between September 2011 and February 2014, 126 pediatric cancer patients were admitted to our center for chemotherapy and/or hematopoietic stem cell transplantation and were included in this study...
May 17, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28526992/epithelial-mesenchymal-transition-emt-in-metastatic-breast-cancer-in-omani-women
#4
Ritu Lakhtakia, Adil Aljarrah, Muhammad Furrukh, Shyam S Ganguly
Breast cancer (BC) in Oman affects younger women and has a more aggressive course. Clinical and biological variables like age, pregnancy, tumor size, type, grade, receptor expression and proliferation predict disease aggression but there is no direct predictor of metastasis except lymphovascular invasion. Epithelial-mesenchymal transition (EMT) is characterized by epithelial cells losing epithelial and acquiring mesenchymal morpho-immunophenotypic characteristics. In tumors, EMT-like transitions may signify a metastatic phenotype and have features in common with cancer stem cells (CSC) which show resistance to chemotherapy...
May 19, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28526879/musashi-1-promotes-a-cancer-stem-cell-lineage-and-chemoresistance-in-colorectal-cancer-cells
#5
Guang-Yuh Chiou, Tzu-Wei Yang, Chi-Chou Huang, Chia-Ying Tang, Jung-Yi Yen, Ming-Chang Tsai, Hsuan-Yi Chen, Nurul Fadhilah, Chun-Che Lin, Yuh-Jyh Jong
Colorectal cancers (CRCs) are a critical health issue worldwide. Cancer stem cell (CSC) lineages are associated with tumour transformation, progression, and malignant transformation. However, how lineages are transformed and how chemoresistance is acquired by CRCs remain largely unknown. In this report, we demonstrated that the RNA-binding protein Musashi-1 enhanced the development of CD44(+) colorectal CSCs and triggered the formation of anti-apoptotic stress granules (SGs). Our results indicated that CD44(+) CSC lineage-specific induction of tumour malignancies was controlled by Musashi-1...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526827/activated-hepatic-stellate-cells-secrete-periostin-to-induce-stem-cell-like-phenotype-of-residual-hepatocellular-carcinoma-cells-after-heat-treatment
#6
Rui Zhang, Rong-Rong Yao, Jing-Huan Li, Gang Dong, Min Ma, Qiong-Dan Zheng, Dong-Mei Gao, Jie-Feng Cui, Zheng-Gang Ren, Rong-Xin Chen
Some evidences show that residual tumor after thermal ablation will progress rapidly. However, its mechanisms remain unclear. Here, we assessed whether activated HSCs could regulate stem cell-like property of residual tumor after incomplete thermal ablation to promote tumor progression. Human HCC cell lines were exposed to sublethal heat treatment to simulate the peripheral zone of thermal ablation. After residual HCC cells were cultured with conditional medium (CM) from activated HSCs, parameters of the stem cell-like phenotypes were analyzed...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526577/changes-in-tumor-cell-heterogeneity-after-chemotherapy-treatment-in-a-xenograft-model-of-glioblastoma
#7
Alessandra M Welker, Brian D Jaros, Min An, Christine E Beattie
Glioblastoma (GBM) is a highly aggressive brain cancer with limited treatments and poor patient survival. GBM tumors are heterogeneous containing a complex mixture of dividing cells, differentiated cells, and cancer stem cells. It is unclear, however, how these different cell populations contribute to tumor growth or whether they exhibit differential responses to chemotherapy. Here we set out to address these questions using a zebrafish xenograft transplant model (Welker et al., 2016). We found that a small population of differentiated vimentin positive tumor cells, but a majority of Sox2 positive putative cancer stem cells, were dividing during tumor growth...
May 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/28526008/cleavage-of-the-urokinase-receptor-upar-on-oral-cancer-cells-regulation-by-transforming-growth-factor-%C3%AE-1-tgf-%C3%AE-1-and-potential-effects-on-migration-and-invasion
#8
Synnove Norvoll Magnussen, Elin Hadler-Olsen, Daniela Elena Costea, Eli Berg, Cristiane Cavalcanti Jacobsen, Bente Mortensen, Tuula Salo, Inigo Martinez-Zubiaurre, Jan-Olof Winberg, Lars Uhlin-Hansen, Gunbjorg Svineng
BACKGROUND: Urokinase plasminogen activator (uPA) receptor (uPAR) is up-regulated at the invasive tumour front of human oral squamous cell carcinoma (OSCC), indicating a role for uPAR in tumour progression. We previously observed elevated expression of uPAR at the tumour-stroma interface in a mouse model for OSCC, which was associated with increased proteolytic activity. The tumour microenvironment regulated uPAR expression, as well as its glycosylation and cleavage. Both full-length- and cleaved uPAR (uPAR (II-III)) are involved in highly regulated processes such as cell signalling, proliferation, migration, stem cell mobilization and invasion...
May 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28525893/rat-embryonic-fibroblasts-immortalized-by-mrps18-2-protein-are-target-for-nk-cells
#9
Muhammad Mushtaq, Pradeepa N Pangigadde, Suhas Darekar, Erik Dissen, Elena Kashuba
Overexpression of the human mitochondrial ribosomal protein MRPS18-2 (S18-2) led to immortalization of primary rat embryonic fibroblasts (REFs). The derived cells (18IM) expressed embryonic stem cell markers. Noteworthy, genes encoding the COX family proteins were up-regulated significantly. It is known that the COX family proteins are involved in the regulation of immune response.In the present work we demonstrate that 18IM cells behave like stem cells when subjected to directed differentiation in vitro. However, unlike stem cells, 18IM cells do not develop tumors in vivo, in SCID mice...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525846/exploring-the-clonal-evolution-of-cd133-aldehyde-dehydrogenase-1-aldh1-positive-cancer-stem-like-cells-from-primary-to-recurrent-high-grade-serous-ovarian-cancer-hgsoc-a-study-of-the-ovarian-cancer-therapy-innovative-models-prolong-survival-octips-consortium
#10
Ilary Ruscito, Dan Cacsire Castillo-Tong, Ignace Vergote, Iulia Ignat, Mandy Stanske, Adriaan Vanderstichele, Ram N Ganapathi, Jacek Glajzer, Hagen Kulbe, Fabian Trillsch, Alexander Mustea, Caroline Kreuzinger, Pierluigi Benedetti Panici, Charlie Gourley, Hani Gabra, Mirjana Kessler, Jalid Sehouli, Silvia Darb-Esfahani, Elena Ioana Braicu
BACKGROUND: High-grade serous ovarian cancer (HGSOC) causes 80% of all ovarian cancer (OC) deaths. In this setting, the role of cancer stem-like cells (CSCs) is still unclear. In particular, the evolution of CSC biomarkers from primary (pOC) to recurrent (rOC) HGSOCs is unknown. Aim of this study was to investigate changes in CD133 and aldehyde dehydrogenase-1 (ALDH1) CSC biomarker expression in pOC and rOC HGSOCs. METHODS: Two-hundred and twenty-four pOC and rOC intrapatient paired tissue samples derived from 112 HGSOC patients were evaluated for CD133 and ALDH1 expression using immunohistochemistry (IHC); pOCs and rOCs were compared for CD133 and/or ALDH1 levels...
May 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28525840/indole-carboxylic-acid-esters-of-melampomagnolide-b-are-potent-anticancer-agents-against-both-hematological-and-solid-tumor-cells
#11
Shobanbabu Bommagani, Jessica Ponder, Narsimha R Penthala, Venumadhav Janganati, Craig T Jordan, Michael J Borrelli, Peter A Crooks
A series of novel, heteroaryl carboxylic acid conjugates of the sesquiterpene melampomagnolide-B (MMB, 3) has been evaluated as antitumor agents against an NCI panel of 64 human hematopoetic and solid tumor cell lines. The indole-3-acrylic acid conjugate 7j and the indole-3-carboxylic acid conjugate 7k were found to be the most potent analogs in the series. Compounds 7j and 7k exhibited remarkable growth inhibition, with GI50 values in the range 0.03-0.30 μM and 0.04-0.28 μM, respectively, against the cell lines in the leukemia sub-panel, and GI50 values of 0...
May 11, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28525381/the-cell-of-origin-dictates-the-temporal-course-of-neurofibromatosis-1-nf1-low-grade-glioma-formation
#12
Anne C Solga, Joseph A Toonen, Yuan Pan, Patrick J Cimino, Yu Ma, Guillaume A Castillon, Scott M Gianino, Mark H Ellisman, Da Yong Lee, David H Gutmann
Low-grade gliomas are one of the most common brain tumors in children, where they frequently form within the optic pathway (optic pathway gliomas; OPGs). Since many OPGs occur in the context of the Neurofibromatosis Type 1 (NF1) cancer predisposition syndrome, we have previously employed Nf1 genetically-engineered mouse (GEM) strains to study the pathogenesis of these low-grade glial neoplasms. In the light of the finding that human and mouse low-grade gliomas are composed of Olig2+ cells and that Olig2+ oligodendrocyte precursor cells (OPCs) give rise to murine high-grade gliomas, we sought to determine whether Olig2+ OPCs could be tumor-initiating cells for Nf1 optic glioma...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525366/mesenchymal-stem-cell-carriers-enhance-antitumor-efficacy-of-oncolytic-adenoviruses-in-an-immunocompetent-mouse-model
#13
Esther Rincón, Teresa Cejalvo, Deepak Kanojia, Arantzazu Alfranca, Miguel Ángel Rodríguez-Milla, Raul Andrés Gil Hoyos, Yu Han, Lingjiao Zhang, Ramón Alemany, Maciej S Lesniak, Javier García-Castro
Oncolytic virotherapy represents a promising alternative for cancer treatment; however, viral delivery to the tumor represents a major challenge. Mesenchymal stem cells (MSCs) chemotax to tumors, and can serve as a viral delivery tool. Previously, we demonstrated antitumor therapeutic efficacy for mesenchymal stem cells (MSCs) infected with the oncolytic human adenovirus ICOVIR5 (Celyvir) for treatment of neuroblastoma patients. Given the lack of suitable immunocompetent preclinical models, the mechanism underlying Celyvir antitumor activity remains unknown...
May 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28524834/wild-type-p53-induced-phosphatase-1-deficiency-exacerbates-myocardial-infarction-induced-ischemic-injury
#14
Ke-Mei Liu, Hai-Hong Zhang, Ya-Nan Wang, Lian-Mei Wang, Hong-Yu Chen, Cai-Feng Long, Lian-Feng Zhang, Hong-Bing Zhang, Hong-Bing Yan
BACKGROUND: Myocardial infarction (MI) is a major disease burden. Wild-type p53-induced phosphatase 1 (Wip1) has been studied extensively in the context of cancer and the regulation of different types of stem cells, but the role of Wip1 in cardiac adaptation to MI is unknown. We investigated the significance of Wip1 in a mouse model of MI. METHODS: The study began in June 2014 and was completed in July 2016. We compared Wip1-knockout (Wip1-KO) mice and wild-type (WT) mice to determine changes in cardiac function and survival in response to MI...
June 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28524160/stroma-regulated-hmga2-is-an-independent-prognostic-marker-in-pdac-and-aac
#15
Carina Strell, Karin Jessica Norberg, Artur Mezheyeuski, Jonas Schnittert, Praneeth R Kuninty, Carlos Fernández Moro, Janna Paulsson, Nicolai Aagaard Schultz, Dan Calatayud, Johannes Matthias Löhr, Oliver Frings, Caroline Sophie Verbeke, Rainer Lothar Heuchel, Jai Prakash, Julia Sidenius Johansen, Arne Östman
BACKGROUND: The HMGA2 protein has experimentally been linked to EMT and cancer stemness. Recent studies imply that tumour-stroma interactions regulate these features and thereby contribute to tumour aggressiveness. METHODS: We analysed 253 cases of pancreatic ductal adenocarcinoma (PDAC) and 155 cases of ampullary adenocarcinoma (AAC) for HMGA2 expression by IHC. The data were correlated with stroma abundance and supplemented by experimental studies. RESULTS: HMGA2 acts as an independent prognostic marker associated with a significantly shorter overall survival in both tumour types...
May 18, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28523575/znf281-promotes-growth-and-invasion-of-pancreatic-cancer-cells-by-activating-wnt-%C3%AE-catenin-signaling
#16
Yu Qian, Jingyi Li, Suhua Xia
BACKGROUND: Zinc finger protein 281 (ZNF281) has been identified to be involved in embryonic stem cell differentiation and tissue development. Also, ZNF281 was found in various types of cancers. However, its biological functions and clinical significance in pancreatic cancer remain elusive. AIMS: To explore the role of ZNF281 in pancreatic cancer cells proliferation and invasion. METHODS: ZNF281 expression was examined in public database Oncomine and cBioPortal...
May 18, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28523536/microenvironment-of-liver-regeneration-in-liver-cancer
#17
Han-Min Li, Zhi-Hua Ye
The occurrence and development of liver cancer are essentially the most serious outcomes of uncontrolled liver regeneration. The progression of liver cancer is inevitably related to the abnormal microenvironment of liver regeneration. The deterioration observed in the microenvironment of liver regeneration is a necessary condition for the occurrence, development and metastasis of cancer. Therefore, the use of a technique to prevent and treat liver cancer via changes in the microenvironment of liver regeneration is a novel strategy...
May 18, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28523512/reduced-adipogenesis-after-lung-tumor-exosomes-priming-in-human-mesenchymal-stem-cells-via-tgf%C3%AE-signaling-pathway
#18
Shihua Wang, Xiaoxia Li, Meiqian Xu, Jing Wang, Robert Chunhua Zhao
A key feature of cancer cachexia is the loss of adipose tissue, mainly due to increased lipolysis and an impairment of adipogenesis. Recent findings have shown that cancer exosomes promoted lipolysis in adipose tissue. However, effects of cancer exosomes on adipogenesis were not reported. In this study, we found that lung cancer exosomes could be internalized by human adipose tissue-derived mesenchymal stem cells (hAD-MSCs) and significantly inhibited hAD-MSC adipogenesis as demonstrated by Oil Red O staining and decreased expression of adipogenic-specific genes...
May 18, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28522590/notch-inhibitor-pf-03084014-inhibits-hepatocellular-carcinoma-growth-and-metastasis-via-suppression-of-cancer-stemness-due-to-reduced-activation-of-notch1-stat3
#19
Chuan Xing Wu, Aimin Xu, Cathy C Zhang, Peter Olson, Lin Chen, Terence K Lee, Tan To Cheung, Chung Mau Lo, Xiao Qi Wang
Aberrant activation of the Notch signaling pathway is implicated in many solid tumors, including hepatocellular carcinoma (HCC), indicating a potential use of Notch inhibitors for treatment. In this study, we investigated the antitumor and antimetastasis efficacy of the novel Notch inhibitor (γ-secretase inhibitor) PF-03084014 in HCC. HCC spherical cells (stem-like cancer cells), a sphere-derived orthotopic tumor model and one patient-derived xenograft (PDX) model were used in our experiment. We demonstrated that PF-03084014 inhibited the self-renewal and proliferation of cancer stem cells...
May 18, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28522588/a-potential-mechanism-for-adc-induced-neutropenia-role-of-neutrophils-in-their-own-demise
#20
Hui Zhao, Sara Gulesserian, Maria Christina Malinao, Sathish Kumar-Ganesan, James Song, Mi Sook Chang, Melissa M Williams, Zhilan Zeng, Michael Mattie, Brian A Mendelsohn, David R Stover, Fernando Doñate
Neutropenia is a common adverse event in cancer patients treated with antibody-drug conjugates (ADCs) and we aimed to elucidate the potential mechanism of this toxicity. To investigate if ADCs affect neutrophil production from bone marrow, an in vitro assay was developed in which hematopoietic stem cells (HSCs) were differentiated to neutrophils. Several antibodies against targets absent in HSCs and neutrophils were conjugated to MMAE via a cleavable valine-citrulline linker (vcMMAE-ADCs) or MMAF via a non-cleavable maleimidocaproyl linker (mcMMAF-ADCs), and their cytotoxicity was tested in the neutrophil differentiation assay...
May 18, 2017: Molecular Cancer Therapeutics
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