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https://www.readbyqxmd.com/read/27933724/comparative-analysis-reveals-amino-acids-critical-for-anticancer-activity-of-peptide-cigb-552
#1
Soledad Astrada, Yolanda Gomez, Exequiel Barrera, Gonzalo Obal, Otto Pritsch, Sergio Pantano, Maribel G Vallespí, Mariela Bollati-Fogolín
Because of resistance development by cancer cells against current anticancer drugs, there is a considerable interest in developing novel antitumor agents. We have previously demonstrated that CIGB-552, a novel cell-penetrating synthetic peptide, was effective in reducing tumor size and increasing lifespan in tumor-bearing mice. Studies of protein-peptide interactions have shown that COMMD1 protein is a major mediator of CIGB-552 antitumor activity. Furthermore, a typical serine-protease degradation pattern for CIGB-552 in BALB/c mice serum was identified, yielding peptides which differ from CIGB-552 in size and physical properties...
November 2016: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/27933602/fish-tales-the-use-of-zebrafish-xenograft-human-cancer-cell-models
#2
REVIEW
Yvette Drabsch, B Ewa Snaar-Jagalska, Peter Ten Dijke
Advances in scientific techniques have provided researchers with exceptional new opportunities to identify and monitor changes between different cancer types, during different stages of progression, between individual tumor cells and in the surrounding stroma. The wealth of information that can be obtained from new scientific techniques places additional requirements on the conventional cancer models. New models that could be used to rapidly access the (potential) functional importance of newly identified (epi)genetic and proteomic changes and test the efficacy on emerging (combinatorial) therapies are desperately required...
December 9, 2016: Histology and Histopathology
https://www.readbyqxmd.com/read/27933587/development-of-a-more-efficient-albumin-based-delivery-system-for-gambogic-acid-with-low-toxicity-for-lung-cancer-therapy
#3
Yan Zhang, Zhijie Yang, Xinyi Tan, Xing Tang, Zaixing Yang
Gambogic acid (GA) has been proven to be a potent chemotherapeutic agent for the treatment of lung cancer in clinical trials. However, GA is limited in its therapeutic value by properties such as poor water solubility and low chemical stability. In clinical trials, cationic arginine (Arg) was added to solubilize GA, and this may also cause other side effects. Here, we have designed and developed a more efficient human serum albumin (HSA)-based delivery system for GA with low toxicity which helps improve its solubility, chemical stability and increases its antitumor efficacy...
December 8, 2016: AAPS PharmSciTech
https://www.readbyqxmd.com/read/27933396/totally-laparoscopic-total-gastrectomy-using-the-overlap-method-early-outcomes-of-50-consecutive-cases
#4
Tae-Gyun Lee, In-Seob Lee, Jeong-Hwan Yook, Byung-Sik Kim
BACKGROUND: Construction of an esophagojejunostomy is still a challenging procedure in totally laparoscopic total gastrectomy (TLTG), and there is no standard anastomosing method. The aims of this study were to describe our TLTG with the overlap method using a linear stapler and report surgical outcomes. METHODS: From January 2015 to April 2016, 50 patients underwent TLTG using the overlap method for gastric cancer. The procedures were performed by a single surgeon, and the patients' medical records were reviewed...
December 8, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27933394/men-and-women-show-similar-survival-rates-after-breast-cancer
#5
Paulo Franscisco Mascarenhas Bender, Letícia Lima de Oliveira, Célia Regina Costa, Suzana Sales de Aguiar, Anke Bergmann, Luiz Claudio Santos Thuler
PURPOSE: To compare the disease-free survival (DFS) and overall survival (OS) rates of men and women undergoing treatment for breast cancer. METHODS: A retrospective cohort study of patients with breast cancer diagnosed and treated at the Cancer Hospital III of the National Cancer Institute of Brazil, Rio de Janeiro, Brazil, between 1999 and 2013. Male breast cancer cases were matched for age, year of diagnosis, and clinical staging to three female cases (1:3). Patient characteristics were abstracted from hospital records and medical charts...
December 8, 2016: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/27933386/endoscopic-submucosal-dissection-specimens-in-early-colorectal-cancer-lateral-margins-macroscopic-techniques-and-possible-pitfalls
#6
Alicia Dessain, Christophe Snauwaert, Pamela Baldin, Pierre Deprez, Louis Libbrecht, Hubert Piessevaux, Anne Jouret-Mourin
Endoscopic submucosal dissection (ESD) allows en-bloc resection of superficial gastrointestinal tumors, providing specimens on which lateral margin analysis can be performed reliably. Positive lateral margins have been linked to higher rates of recurrence/residual tumor. There are no guidelines for macroscopic processing of lateral margins. Currently, most institutions use parallel lateral sections, which are difficult to interpret. We use perpendicular lateral sections, hypothesizing that it decreases potential artifactually positive lateral margins...
December 8, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27933384/thyroid-autoimmunity-is-really-associated-with-papillary-thyroid-carcinoma
#7
Alev Selek, Berrin Cetinarslan, Ilhan Tarkun, Zeynep Canturk, Berna Ustuner, Zeynep Akyay
The incidence of thyroid cancer has been greatly increasing. Several studies aimed to investigate biomarkers for prediction of thyroid cancer. Some of these studies have suggested that thyroid autoantibodies (TAb) could be used as predictors of thyroid cancer risk, but the correlation between TAb and PTC is still a matter of debate. The aim of this study is to evaluate thyroid autoimmunity and TAbs in patients with PTC and benign multinodular goiter (MNG) to investigate if TAbs and autoimmune thyroid disease (ATD) could predict thyroid malignancy...
December 8, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27933315/immunogenicity-of-self-tumor-associated-proteins-is-enhanced-through-protein-truncation
#8
Tim Kottke, Kevin G Shim, Vanesa Alonso-Camino, Shane Zaidi, Rosa Maria Diaz, Jose Pulido, Jill Thompson, Karishma R Rajani, Laura Evgin, Elizabeth Ilett, Hardev Pandha, Kevin Harrington, Peter Selby, Alan Melcher, Richard Vile
We showed previously that therapy with Vesicular Stomatitis Virus (VSV) expressing tumor-associated proteins eradicates established tumors. We show here that when cellular cDNA were cloned into VSV which retained their own poly-A signal, viral species emerged in culture which had deleted the cellular poly-A signal and also contained a truncated form of the protein coding sequence. Typically, the truncation occurred such that a Tyrosine-encoding codon was converted into a STOP codon. We believe that the truncation of tumor-associated proteins expressed from VSV in this way occurred to preserve the ability of the virus to replicate efficiently...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27933314/tunneling-nanotubes-an-alternate-route-for-propagation-of-the-bystander-effect-following-oncolytic-viral-infection
#9
Justin Ady, Venugopal Thayanithy, Kelly Mojica, Phillip Wong, Joshua Carson, Prassanna Rao, Yuman Fong, Emil Lou
Tunneling nanotubes (TNTs) are ultrafine, filamentous actin-based cytoplasmic extensions which form spontaneously to connect cells at short and long-range distances. We have previously described long-range intercellular communication via TNTs connecting mesothelioma cells in vitro and demonstrated TNTs in intact tumors from patients with mesothelioma. Here, we investigate the ability of TNTs to mediate a viral thymidine kinase based bystander effect after oncolytic viral infection and administration of the nucleoside analog ganciclovir...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27933313/genetic-engineering-of-chimeric-antigen-receptors-using-lamprey-derived-variable-lymphocyte-receptors
#10
Robert Moot, Sunil S Raikar, Lauren Fleischer, Melissa Querrey, Daniel E Tylawsky, Hirotomo Nakahara, Christopher B Doering, H Trent Spencer
Chimeric antigen receptors (CARs) are used to redirect effector cell specificity to selected cell surface antigens. Using CARs, antitumor activity can be initiated in patients with no prior tumor specific immunity. Although CARs have shown promising clinical results, the technology remains limited by the availability of specific cognate cell target antigens. To increase the repertoire of targetable tumor cell antigens we utilized the immune system of the sea lamprey to generate directed variable lymphocyte receptors (VLRs)...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27933304/preclinical-validation-lv-il-12-transduction-of-patient-leukemia-cells-for-immunotherapy-of-aml
#11
Ju Huang, Yuanfeng Liu, Bryan C Au, Dwayne L Barber, Andrea Arruda, Axel Schambach, Michael Rothe, Mark D Minden, Christopher J Paige, Jeffrey A Medin
Interleukin-12 (IL-12) is a potent cytokine that may be harnessed to treat cancer. To date, nearly 100 IL-12-based clinical trials have been initiated worldwide. Yet systemic administration of IL-12 is toxic. Different strategies are being developed to reduce such toxicities by restricting IL-12 distribution. Our previous studies employed lentivector-mediated expression of murine IL-12 in tumor cells and demonstrated effective protection in both mouse leukemia and solid tumor challenge models. In this study, we carried out preclinical validation studies using a novel lentivector to engineer expression of human IL-12 in acute myeloid leukemia blast cells isolated from 21 patients...
2016: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/27933291/endocytosis-and-physiology-insights-from-disabled-2-deficient-mice
#12
REVIEW
Wensi Tao, Robert Moore, Elizabeth R Smith, Xiang-Xi Xu
Disabled-2 (Dab2) is a clathrin and cargo binding endocytic adaptor protein, and cell biology studies revealed that Dab2 plays a role in cellular trafficking of a number of transmembrane receptors and signaling proteins. A PTB/PID domain located in the N-terminus of Dab2 binds the NPXY motif(s) present at the cytoplasmic tails of certain transmembrane proteins/receptors. The membrane receptors reported to bind directly to Dab2 include LDL receptor and its family members LRP1 and LRP2 (megalin), growth factor receptors EGFR and FGFR, and the cell adhesion receptor beta1 integrin...
2016: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/27933281/pet-imaging-of-urokinase-type-plasminogen-activator-receptor-upar-in-prostate-cancer-current-status-and-future-perspectives
#13
REVIEW
Dorthe Skovgaard, Morten Persson, Andreas Kjaer
Overexpression of urokinase-type plasminogen activator receptors (uPAR) represents an important biomarker for aggressiveness in most common malignant diseases, including prostate cancer (PC). Accordingly, uPAR expression either assessed directly in malignant PC tissue or assessed directly in plasma (intact/cleaved forms)-provides independent additional clinical information to that contributed by PSA, Gleason score, and other relevant pathological and clinical parameters. In this respect, non-invasive molecular imaging by positron emission tomography (PET) offers a very attractive technology platform, which can provide the required quantitative information on the uPAR expression profile, without the need for invasive procedures and the risk of missing the target due to tumor heterogeneity...
2016: Clinical and Translational Imaging: Reviews in Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27933279/is-there-a-role-for-genetic-information-in-risk-assessment-and-decision-making-in-prostate-cancer
#14
Mohamadreza Nowroozi, Mohsen Ayati, Erfan Amini, Reza Mahdian, Behzad Yousefi, Amir Arbab, Mansour Jamali Zawarei, Hasan Niroomand, Hamidreza Ghorbani, Alireza Ghadian
OBJECTIVES: Prostate cancer is a neoplasm with a variable natural history and clinical behavior. There is much debate on the use of inherited genetic information in clinical application including risk assessment and treatment decisions. This study was performed to evaluate the relationship between clinical parameters of prostate cancer (PSA, Gleason score, and metastasis) and expression of NKX3.1, AMACR, TMPRSS2-ERG, ERG, and SPINK1 genes. METHODS: Newly diagnosed cases of prostate cancer were selected for this study...
November 2016: Nephro-urology Monthly
https://www.readbyqxmd.com/read/27933271/functional-significance-of-aurora-kinases-p53-protein-family-interactions-in-cancer
#15
REVIEW
Kaori Sasai, Warapen Treekitkarnmongkol, Kazuharu Kai, Hiroshi Katayama, Subrata Sen
Aurora kinases play critical roles in regulating spindle assembly, chromosome segregation, and cytokinesis to ensure faithful segregation of chromosomes during mitotic cell division cycle. Molecular and cell biological studies have revealed that Aurora kinases, at physiological levels, orchestrate complex sequential cellular processes at distinct subcellular locations through functional interactions with its various substrates. Aberrant expression of Aurora kinases, on the other hand, cause defects in mitotic spindle assembly, checkpoint response activation, and chromosome segregation leading to chromosomal instability...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27933239/impact-of-bowel-resection-margins-in-node-negative-colon-cancer
#16
Ricardo Rocha, Rui Marinho, David Aparício, Marta Fragoso, Marta Sousa, António Gomes, Carlos Leichsenring, Carla Carneiro, Vasco Geraldes, Vítor Nunes
PURPOSE: Surgical intestinal resection margins in colon cancer are a longstanding debate in terms the optimal distance between the tumor and the colonic section line. The aim of this study is to define the oncological outcomes in relation to surgical margins, measured in terms or recurrence rate, time-to-recurrence, disease-free survival and overall survival in a population of node negative colon cancer patients. METHODS: We conducted a retrospective observational longitudinal single institution study...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27933120/fast-and-selective-cell-isolation-from-blood-sample-by-microfiber-fabric-system-with-vacuum-aspiration
#17
Takayuki Ueki, Akifumi Yoshihara, Yuji Teramura, Madoka Takai
Since circulating tumor cells (CTCs) are tumor cells which are found in the blood of cancer patients, CTCs are potential tumor markers, so a rapid isolation of CTCs is desirable for clinical applications. In this paper, a three-dimensional polystyrene (PS) microfiber fabric with vacuum aspiration system was developed for capturing CTCs within a short time. Various microfiber fabrics with different diameters were prepared by the electrospinning method and optimized for contact frequency with cells. Vacuum aspiration utilizing these microfiber fabrics could filter all cells within seconds without mechanical damage...
2016: Science and Technology of Advanced Materials
https://www.readbyqxmd.com/read/27933111/aberrant-dna-hypermethylation-silenced-sox21-as1-gene-expression-and-its-clinical-importance-in-oral-cancer
#18
Cheng-Mei Yang, Tsung-Han Wang, Hung-Chih Chen, Sung-Chou Li, Ming-Chien Lee, Huei-Han Liou, Pei-Feng Liu, Yu-Kai Tseng, Yow-Ling Shiue, Luo-Ping Ger, Kuo-Wang Tsai
BACKGROUND: Long noncoding RNAs (lncRNAs) are more than 200 nucleotides in length and lack transcriptional ability. The biological function of lncRNAs in oral squamous cell carcinoma (OSCC) remains unclear. The aim of this study was to identify the dysfunction of lncRNA in OSCC. RESULTS: We analyzed the transcriptome profiles of human OSCC tissues and paired adjacent normal tissues from two patients through a next-generation sequencing approach. A total of 14 lncRNAs were upregulated (fold change ≥3) and 13 were downregulated (fold change ≤-3) in OSCC tissues compared with the adjacent normal tissues...
2016: Clinical Epigenetics
https://www.readbyqxmd.com/read/27933061/ncr1-expression-identifies-canine-natural-killer-cell-subsets-with-phenotypic-similarity-to-human-natural-killer-cells
#19
Jennifer A Foltz, Srinivas S Somanchi, Yanwen Yang, Arianexys Aquino-Lopez, Erin E Bishop, Dean A Lee
Canines spontaneously develop many cancers similar to humans - including osteosarcoma, leukemia, and lymphoma - offering the opportunity to study immune therapies in a genetically heterogeneous and immunocompetent environment. However, a lack of antibodies recognizing canine NK cell markers has resulted in suboptimal characterization and unknown purity of NK cell products, hindering the development of canine models of NK cell adoptive immunotherapy. To this end, we generated a novel antibody to canine NCR1 (NKp46), the putative species-wide marker of NK cells, enabling purification of NK cells for further characterization...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27932948/rna-editing-systemic-relevance-and-clue-to-disease-mechanisms
#20
REVIEW
Jochen C Meier, Svenja Kankowski, Heinz Krestel, Florian Hetsch
Recent advances in sequencing technologies led to the identification of a plethora of different genes and several hundreds of amino acid recoding edited positions. Changes in editing rates of some of these positions were associated with diseases such as atherosclerosis, myopathy, epilepsy, major depression disorder, schizophrenia and other mental disorders as well as cancer and brain tumors. This review article summarizes our current knowledge on that front and presents glycine receptor C-to-U RNA editing as a first example of disease-associated increased RNA editing that includes assessment of disease mechanisms of the corresponding gene product in an animal model...
2016: Frontiers in Molecular Neuroscience
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