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Clinical pathways and cancer

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https://www.readbyqxmd.com/read/28214017/genetic-risk-factors-for-ovarian-cancer-and-their-role-for-endometriosis-risk
#1
Stefanie Burghaus, Peter A Fasching, Lothar Häberle, Matthias Rübner, Kathrin Büchner, Simon Blum, Anne Engel, Arif B Ekici, Arndt Hartmann, Alexander Hein, Matthias W Beckmann, Stefan P Renner
OBJECTIVE: Several genetic variants have been validated as risk factors for ovarian cancer. Endometriosis has also been described as a risk factor for ovarian cancer. Identifying genetic risk factors that are common to the two diseases might help improve our understanding of the molecular pathogenesis potentially linking the two conditions. METHODS: In a hospital-based case-control analysis, 12 single nucleotide polymorphisms (SNPs), validated by the Ovarian Cancer Association Consortium (OCAC) and the Collaborative Oncological Gene-environment Study (COGS) project, were genotyped using TaqMan® OpenArray™ analysis...
February 14, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28213714/-current-biomarkers-for-gastric-cancer
#2
G B Baretton, D E Aust
Gastric cancer is still a relevant malignant disease with high morbidity and mortality. Current molecular genetic data show that gastric cancer, as other solid tumors as well, is not a single entity but consists of several molecular subtypes of gastric cancer with diverse biology. The increasing understanding of molecular pathways is the basis for innovative therapies. These either directly target altered signaling pathways or genes in tumor cells or as in immune checkpoint inhibitors, indirectly target tumor cells by blocking tumor-induced immune inhibition leading to improvement in the prognosis...
February 17, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28213656/dual-functional-microrna-186-5p-targets-both-fgf2-and-rela-to-suppress-tumorigenesis-of-glioblastoma-multiforme
#3
Fachen Wang, Hui Jiang, Shanjun Wang, Bing Chen
Glioblastoma multiforme (GBM) is one of the most malignant cancers. MicroRNAs (miRs) were reported to play important roles in GBM recently. However, the role of a novel miR-186-5p in GBM tumorigenesis is still elusive. Using bioinformatics, miR-186-5p was identified as potential regulators of both fibroblast growth factor (FGF)-2 and NF-κB subunit RelA. Luciferase reporter assay was used to confirm the direct recognition FGF2 and RelA mRNAs by miR-186-5p. Invasion and migration assays were employed to study the effect of miR-186-5p on GBM cell growth in vitro...
February 17, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28213603/women-s-experiences-with-cervical-cancer-screening-in-a-colposcopy-referral-clinic-in-cape-town-south-africa-a-qualitative-analysis
#4
Mariette Momberg, Matthys H Botha, Frederick H Van der Merwe, Jennifer Moodley
OBJECTIVE: The aim of this study was to explore and understand women's experience with cervical cancer screening and with the referral pathways for abnormal Papanicolau (Pap) smears. DESIGN AND SETTING: Focus group discussions were conducted with first time colposcopy clinic attendees at a tertiary hospital colposcopy clinic in Cape Town, South Africa during November 2014. A thematic analysis was conducted to identify key themes. Initial coding categories were drawn from the interview guide...
February 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28213331/mitochondrial-metabolism-and-energy-sensing-in-tumor-progression
#5
REVIEW
Luisa Iommarini, Anna Ghelli, Giuseppe Gasparre, Anna Maria Porcelli
Energy homeostasis is pivotal for cell fate since metabolic regulation, cell proliferation and death are strongly dependent on the balance between catabolic and anabolic pathways. In particular, metabolic and energetic changes have been observed in cancer cells even before the discovery of oncogenes and tumor suppressors, but has been neglected for a long time. Instead, during the past 20years a renaissance of the study of tumor metabolism has led to a revised and more accurate sight of the metabolic landscape of cancer cells...
February 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28213330/drug-discovery-strategies-in-the-field-of-tumor-energy-metabolism-limitations-by-metabolic-flexibility-and-metabolic-resistance-to-chemotherapy
#6
REVIEW
N D Amoedo, E Obre, R Rossignol
The search for new drugs capable of blocking the metabolic vulnerabilities of human tumors has now entered the clinical evaluation stage, but several projects already failed in phase I or phase II. In particular, very promising in vitro studies could not be translated in vivo at preclinical stage and beyond. This was the case for most glycolysis inhibitors that demonstrated systemic toxicity. A more recent example is the inhibition of glutamine catabolism in lung adenocarcinoma that failed in vivo despite a strong addiction of several cancer cell lines to glutamine in vitro...
February 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28212580/network-pharmacology-based-and-clinically-relevant-prediction-of-the-active-ingredients-and-potential-targets-of-chinese-herbs-in-metastatic-breast-cancer-patients
#7
Yu Mao, Jian Hao, Zi-Qi Jin, Yang-Yang Niu, Xue Yang, Dan Liu, Rui Cao, Xiong-Zhi Wu
Chinese Herbal Medicine (CHM) plays a significant role in breast cancer treatment. We conduct the study to ascertain the relative molecular targets of effective Chinese herbs in treating stage IV breast cancer.Survival benefit of CHM was verified by Kaplan-Meier method and Cox regression analysis. A bivariate correlation analysis was used to find and establish the effect of herbs in complex CHM formulas. A network pharmacological approach was adopted to explore the potential mechanisms of CHM.Patients in the CHM group had a median survival time of 55 months, which was longer than the 23 months of patients in the non-CHM group...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212564/s100a7-promotes-the-migration-invasion-and-metastasis-of-human-cervical-cancer-cells-through-epithelial-mesenchymal-transition
#8
Tian Tian, Xukun Li, Zhen Hua, Jianlin Ma, Xiaowei Wu, Zhihua Liu, Hongyan Chen, Zhumei Cui
S100A7 is an EF-hand calcium-binding protein that has been suggested to be implicated in cell proliferation, migration, invasion and tumor metastasis. However, its role in cervical cancer has not yet been fully clarified. The present study used immunohistochemistry analysis of S100A7 in clinical specimens of cervical cancer to show that S100A7 expression was significantly upregulated in cervical cancer tissues compared with normal cervical tissues and S100A7 expression in high grade cervical intraepithelial neoplasm (CIN) was significantly higher than cervical cancer...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212543/metabotropic-glutamate-receptors-as-a-new-therapeutic-target-for-malignant-gliomas
#9
REVIEW
Mery Stefani Leivas Pereira, Fábio Klamt, Chairini Cássia Thomé, Paulo Valdeci Worm, Diogo Losch de Oliveira
Metabotropic glutamate receptors (mGluR) are predominantly involved in maintenance of cellular homeostasis of central nervous system. However, evidences have suggested other roles of mGluR in human tumors. Aberrant mGluR signaling has been shown to participate in transformation and maintenance of various cancer types, including malignant brain tumors. This review intends to summarize recent findings regarding the involvement of mGluR-mediated intracellular signaling pathways in progression, aggressiveness, and recurrence of malignant gliomas, mainly glioblastomas (GBM), highlighting the potential therapeutic applications of mGluR ligands...
February 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212293/targeting-angiogenesis-in-biliary-tract-cancers-an-open-option
#10
REVIEW
Valeria Simone, Oronzo Brunetti, Luigi Lupo, Mario Testini, Eugenio Maiorano, Michele Simone, Vito Longo, Christian Rolfo, Marc Peeters, Aldo Scarpa, Amalia Azzariti, Antonio Russo, Domenico Ribatti, Nicola Silvestris
Biliary tract cancers (BTCs) are characterized by a bad prognosis and the armamentarium of drugs for their treatment is very poor. Although the inflammatory status of biliary tract represents the first step in the cancerogenesis, the microenvironment also plays a key role in the pathogenesis of BTCs, promoting tumor angiogenesis, invasion and metastasis. Several molecules, such as vascular endothelial growth factor (VEGF) and fibroblast growth factor (FGF), are involved in the angiogenesis process and their expression on tumor samples has been explored as prognostic marker in both cholangiocarcinoma and gallbladder cancer...
February 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28211448/cx-5461-is-a-dna-g-quadruplex-stabilizer-with-selective-lethality-in-brca1-2-deficient-tumours
#11
Hong Xu, Marco Di Antonio, Steven McKinney, Veena Mathew, Brandon Ho, Nigel J O'Neil, Nancy Dos Santos, Jennifer Silvester, Vivien Wei, Jessica Garcia, Farhia Kabeer, Daniel Lai, Priscilla Soriano, Judit Banáth, Derek S Chiu, Damian Yap, Daniel D Le, Frank B Ye, Anni Zhang, Kelsie Thu, John Soong, Shu-Chuan Lin, Angela Hsin Chin Tsai, Tomo Osako, Teresa Algara, Darren N Saunders, Jason Wong, Jian Xian, Marcel B Bally, James D Brenton, Grant W Brown, Sohrab P Shah, David Cescon, Tak W Mak, Carlos Caldas, Peter C Stirling, Phil Hieter, Shankar Balasubramanian, Samuel Aparicio
G-quadruplex DNAs form four-stranded helical structures and are proposed to play key roles in different cellular processes. Targeting G-quadruplex DNAs for cancer treatment is a very promising prospect. Here, we show that CX-5461 is a G-quadruplex stabilizer, with specific toxicity against BRCA deficiencies in cancer cells and polyclonal patient-derived xenograft models, including tumours resistant to PARP inhibition. Exposure to CX-5461, and its related drug CX-3543, blocks replication forks and induces ssDNA gaps or breaks...
February 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28210763/artemisinin-and-its-derivatives-in-cancer-therapy-status-of-progress-mechanism-of-action-and-future-perspectives
#12
REVIEW
Archana Bhaw-Luximon, Dhanjay Jhurry
Since the late 1990s, there has been rapid multiplication of data on the anti-cancer properties of artemisinins. This article reviews the status of progress of artemisinin and its derivatives as anti-cancer agents in clinical trials, case reports, and in vitro/in vivo studies. Particular attention is laid on the combinations of artemisinins and synthetic chemodrugs to enhance the latter's efficacy. An attempt is here made to rationalize the synergistic effects of a few common anti-cancer drugs of the anthracycline, taxane, anti-metabolite, and platinum-based drug families...
February 16, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28210556/are-breast-cancer-stem-cells-the-key-to-resolving-clinical-issues-in-breast-cancer-therapy
#13
REVIEW
Hidetaka Shima, Akimitsu Yamada, Takashi Ishikawa, Itaru Endo
Despite the dramatic advances in breast cancer treatment over the past two decades, it is still the most common malignancies in women. One of the reasons patients succumb to breast cancer is treatment resistance leading to metastasis and recurrence. Recently, cancer stem cells (CSCs) have been suggested as a cause of metastasis and recurrence in several cancers because of their unique characteristics, including self-renewal, pluripotency, and high proliferative ability. Increasing evidence has implicated breast cancer stem cells (BCSCs) as essential for tumor development, progression, recurrence, and treatment resistance...
February 2017: Gland Surgery
https://www.readbyqxmd.com/read/28210553/impact-of-value-based-breast-cancer-care-pathway-implementation-on-pre-operative-breast-magnetic-resonance-imaging-utilization
#14
Devina K S McCray, Stephen R Grobmyer, Holly J Pederson
BACKGROUND: Bilateral breast magnetic resonance imaging (MRI) is commonly used in the diagnostic workup of breast cancer (BC) to assess extent of disease and identify occult foci of disease. However, evidence for routine use of pre-operative MRI is lacking. Breast MRI is costly and can lead to unnecessary tests and treatment delays. Clinical care pathways (care paths) are value-based guidelines, which define management recommendations derived by expert consensus and available evidence based data...
February 2017: Gland Surgery
https://www.readbyqxmd.com/read/28210075/pancreatic-stellate-cell-pandora-s-box-for-pancreatic-disease-biology
#15
REVIEW
Ratnakar R Bynigeri, Aparna Jakkampudi, Ramaiah Jangala, Chivukula Subramanyam, Mitnala Sasikala, G Venkat Rao, D Nageshwar Reddy, Rupjyoti Talukdar
Pancreatic stellate cells (PSCs) were identified in the early 1980s, but received much attention after 1998 when the methods to isolate and culture them from murine and human sources were developed. PSCs contribute to a small proportion of all pancreatic cells under physiological condition, but are essential for maintaining the normal pancreatic architecture. Quiescent PSCs are characterized by the presence of vitamin A laden lipid droplets. Upon PSC activation, these perinuclear lipid droplets disappear from the cytosol, attain a myofibroblast like phenotype and expresses the activation marker, alpha smooth muscle actin...
January 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28209746/a-phase-ii-randomized-trial-go27827-of-first-line-folfox-plus-bevacizumab-with-or-without-the-met-inhibitor-onartuzumab-in-patients-with-metastatic-colorectal-cancer
#16
Johanna C Bendell, Howard Hochster, Lowell L Hart, Irfan Firdaus, Joseph R Mace, Joshua J McFarlane, Mark Kozloff, Daniel Catenacci, Jessie J Hsu, Stephen P Hack, David S Shames, See-Chun Phan, Hartmut Koeppen, Allen L Cohn
BACKGROUND: Dysregulated hepatocyte growth factor/mesenchymal-epithelial transition (MET) signaling is associated with poor prognosis and resistance to vascular endothelial growth factor inhibition in metastatic colorectal cancer (mCRC). We report outcomes from a double-blind, multicenter phase II trial of the MET inhibitor onartuzumab in combination with mFOLFOX-6 and bevacizumab for mCRC (GO27827; NCT01418222). MATERIALS AND METHODS: Patients were randomized 1:1 to receive onartuzumab (10 mg/kg intravenously [IV]) or placebo plus mFOLFOX-6 and bevacizumab (5 mg/kg IV)...
February 16, 2017: Oncologist
https://www.readbyqxmd.com/read/28209745/platinum-fluoropyrimidine-and-paclitaxel-based-chemotherapy-in-the-treatment-of-advanced-anal-cancer-patients
#17
Francesco Sclafani, Federica Morano, David Cunningham, Chiara Baratelli, Eleftheria Kalaitzaki, David Watkins, Naureen Starling, Ian Chau, Sheela Rao
BACKGROUND: Although treatment of localized anal cancer (AC) is well established, very little evidence is available to inform the management of advanced tumors, and the prognosis of these patients remains poor. We have analyzed treatment pathways and outcomes of a single-institution series of advanced AC patients in order to provide insight into the management of this rare condition. MATERIALS AND METHODS: Inclusion criteria included epidermoid histology, inoperable locally recurrent or metastatic disease, and availability of full medical records...
February 16, 2017: Oncologist
https://www.readbyqxmd.com/read/28209178/tumor-initiating-cells-a-critical-review-of-isolation-approaches-and-new-challenges-in-targeting-strategies
#18
REVIEW
Komal Qureshi-Baig, Pit Ullmann, Serge Haan, Elisabeth Letellier
Most cancers contain a subpopulation of highly tumorigenic cells, known as cancer stem cells (CSCs) or tumor-initiating cells (TICs). Targeting TICs may be essential to achieve cure, because of their self-renewal and tumorigenic properties as well as their resistance to conventional therapies. Despite significant advances in TIC biology, their isolation and identification remain largely disputed and incompletely established. In this review, we discuss the latest developments in isolation and culturing approaches of TICs, with focus on colorectal cancer (CRC)...
February 16, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28208611/betulinic-acid-mediated-apoptosis-in-human-prostate-cancer-cells-involves-p53-and-nuclear-factor-kappa-b-nf-%C3%AE%C2%BAb-pathways
#19
Eswar Shankar, Ailin Zhang, Daniel Franco, Sanjay Gupta
Defects in p53 and nuclear factor-kappa B (NF-κB) signaling pathways are frequently observed in the initiation and development of various human malignancies, including prostate cancer. Clinical studies demonstrate higher expression of NF-κB/p65/RelA, NF-κB/p50/RelB, and cRel as well as downregulation of the p53 network in primary prostate cancer specimens and in metastatic tumors. Betulinic acid (BA), is a triterpenoid that has been reported to be an effective inducer of apoptosis through modification of several signaling pathways...
February 10, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28208582/nutrients-in-energy-and-one-carbon-metabolism-learning-from-metformin-users
#20
REVIEW
Fedra Luciano-Mateo, Anna Hernández-Aguilera, Noemi Cabre, Jordi Camps, Salvador Fernández-Arroyo, Jose Lopez-Miranda, Javier A Menendez, Jorge Joven
Metabolic vulnerability is associated with age-related diseases and concomitant co-morbidities, which include obesity, diabetes, atherosclerosis and cancer. Most of the health problems we face today come from excessive intake of nutrients and drugs mimicking dietary effects and dietary restriction are the most successful manipulations targeting age-related pathways. Phenotypic heterogeneity and individual response to metabolic stressors are closely related food intake. Understanding the complexity of the relationship between dietary provision and metabolic consequences in the long term might provide clinical strategies to improve healthspan...
February 10, 2017: Nutrients
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