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https://www.readbyqxmd.com/read/28088493/apoptosis-induced-by-the-methanol-extract-of-salvia-miltiorrhiza-bunge-in-non-small-cell-lung-cancer-through-pten-mediated-inhibition-of-pi3k-akt-pathway
#1
Yin-Tao Ye, Wei Zhong, Pei Sun, Dong Wang, Chen Wang, Li-Min Hu, Jun-Qiang Qian
ETHNOPHARMACOLOGICAL RELEVANCE: Salvia miltiorrhiza Bunge, a well-known traditional Chinese medicinal (TCM) plant, has been used to treat cardiovascular diseases since thousands of years. Many studies have reported that the active component tanshinones displayed a variety of biological activities: antithrombous, antiplatelet aggregation, antioxidant and antitumor promoting. But the mechanism of how the active components working still need to be clarified. The anti-tumor effect of compounds of tanshinone (CTN), the methanol extract of Salvia miltiorrhiza Bunge roots, was investigated...
January 11, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28088445/synthesis-and-exploration-of-novel-radiolabeled-bombesin-peptides-for-targeting-receptor-positive-tumor
#2
Kakali De, Indranil Banerjee, Samarendu Sinha, Shantanu Ganguly
Increasing evidence of peptide receptor overexpression in various cancer cells, warrant the development of receptor specific radiolabeled peptides for molecular imaging and therapy in nuclear medicine. Gastrin-releasing-peptide (GRP) receptor, are overexpressed in a variety of human cancer cells. The present study report the synthesis and biological evaluation of new bombesin (BBN) analogs, HYNIC-Asp-[Phe(13)]BBN(7-13)-NH-CH2-CH2-CH3:BA1, HYNIC-Pro-[Tyr(13)Met(14)]BBN(7-14)NH2:BA2 as prospective tumor imaging agent with compare to BBN(7-14)NH2:BS as standard...
January 11, 2017: Peptides
https://www.readbyqxmd.com/read/28087344/up-regulation-of-the-active-form-of-small-gtpase-rab13-promotes-macroautophagy-in-vascular-endothelial-cells
#3
Lu Zhang, Fang Dai, LiuQing Cui, Bo Zhou, YuQi Guo
The importance of macroautophagy (hereafter referred to as autophagy) in vascular endothelial cell (VEC) biology and dysfunction is increasingly recognized, but the molecular mechanisms of autophagy in VECs in the presence of serum are still poorly understood. Previously, we identified pterostilbene as a potent autophagy inducer of VECs in the presence of serum. In this study, we used pterostilbene as a tool to induce VEC autophagy and identified the differentially expressed genes using high-throughput DAN microarray...
January 10, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28079984/medical-application-of-glycosaminoglycans-a-review
#4
REVIEW
Alexander Köwitsch, Guoying Zhou, Thomas Groth
The characteristic molecular composition of the different glycosaminoglycans (GAG) is related to their role as structural components and regulators of a multitude of functions of proteins, cells and tissues in the human body. Therefore, it is not surprising that GAG are widely used as coating materials for implants, components of 3D-constructs like tissue engineering scaffolds and hydrogels, but also as diagnostic devices like biosensors and in controlled release applications. Beside a physisorption or encapsulation of GAG, these applications often require their chemical modification to allow a stable covalent attachment on surfaces or cross-linking reactions with other molecules...
January 12, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28079973/a-regulatory-bmi1-let-7i-erk3-pathway-controls-the-motility-of-head-and-neck-cancer-cells
#5
Lobna Elkhadragy, Minyi Chen, Kennon Miller, Muh-Hwa Yang, Weiwen Long
Extracellular signal-regulated kinase 3 (ERK3) is an atypical mitogen-activated protein kinase (MAPK), whose biological activity is tightly regulated by its cellular abundance. Recent studies have revealed that ERK3 is upregulated in multiple cancers and promotes cancer cell migration/invasion and drug resistance. Little is known, however, about how ERK3 expression level is upregulated in cancers. Here, we have identified the oncogenic polycomb group protein BMI1 as a positive regulator of ERK3 level in head and neck cancer cells...
November 9, 2016: Molecular Oncology
https://www.readbyqxmd.com/read/28079302/molecular-basis-for-covalent-inhibition-of-glyceraldehyde-3-phosphate-dehydrogenase-by-a-2-phenoxy-1-4-naphthoquinone-small-molecule
#6
Stefano Bruno, Elisa Uliassi, Mirko Zaffagnini, Federica Prati, Christian Bergamini, Riccardo Amorati, Gianluca Paredi, Marilena Margiotta, Paola Conti, Maria Paola Costi, Marcel Kaiser, Andrea Cavalli, Romana Fato, Maria Laura Bolognesi
Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) has recently gained attention as an anti-protozoan and anti-cancer drug target. We have previously identified 2-phenoxy-1,4-naphthoquinone as an inhibitor of both Trypanosoma brucei and human GAPDH. Herein, through multiple chemical, biochemical, and biological studies, and through the design of analogs, we confirmed the formation of a covalent adduct, we clarified the inhibition mechanism and we demonstrated antitrypanosomal, antiplasmodial and cytotoxic activities in cell cultures...
January 12, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28079292/germ-cell-tumors-insights-from-the-drosophila-ovary-and-the-mouse-testis
#7
REVIEW
Helen K Salz, Emily P Dawson, Jason D Heaney
Ovarian and testicular germ cell tumors of young adults are thought to arise from defects in germ cell development, but the molecular mechanisms underlying malignant transformation are poorly understood. In this review, we focus on the biology of germ cell tumor formation in the Drosophila ovary and the mouse testis, for which the evidence supports common underlying mechanisms such as blocking initiation into the differentiation pathway, impaired lineage progression, and sexual identity instability. We then discuss how these concepts inform our understanding of the disease in humans...
January 12, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28079125/establishment-of-a-integrative-multi-omics-expression-database-ckddb-in-the-context-of-chronic-kidney-disease-ckd
#8
Marco Fernandes, Holger Husi
Complex human traits such as chronic kidney disease (CKD) are a major health and financial burden in modern societies. Currently, the description of the CKD onset and progression at the molecular level is still not fully understood. Meanwhile, the prolific use of high-throughput omic technologies in disease biomarker discovery studies yielded a vast amount of disjointed data that cannot be easily collated. Therefore, we aimed to develop a molecule-centric database featuring CKD-related experiments from available literature publications...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28078813/host-defense-peptide-derived-privileged-scaffolds-for-anti-infective-drug-discovery
#9
Ersilia Nigro, Irene Colavita, Daniela Sarnataro, Olga Scudiero, Aurora Daniele, Francesco Salvatore, Antonello Pessi
'Privileged scaffolds' are molecular frameworks which have been successfully exploited for small molecule drug discovery. Peptide privileged scaffolds, featuring a strictly conserved multiple-disulfide framework and high variability in the rest of the sequence, display a broad range of biological effects, including antimicrobial and antiviral activity. Unlike small molecules, however, the cost of manufacturing these peptides is high, and their synthesis challenging. We previously described a simplified privileged scaffold corresponding to the γ-core of human β-defensin-3 (HBD3)...
January 12, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28077837/curcumin-inhibits-gastric-carcinoma-cell-growth-and-induces-apoptosis-by-suppressing-the-wnt-%C3%AE-catenin-signaling-pathway
#10
Ruzhen Zheng, Qinghua Deng, Yuehua Liu, Pengjun Zhao
BACKGROUND Curcumin has well-known, explicit biological anti-tumor properties. The Wnt/β-catenin signaling pathway plays a central role in tumor cell proliferation and curcumin can regulate the Wnt/b-catenin signaling pathway of several carcinomas. The aim of this study was to investigate the impact of curcumin on the Wnt/β-catenin signaling pathway in human gastric cancer cells. MATERIAL AND METHODS We used 3 gastric cancer cell lines: SNU-1, SNU-5, and AGS. Research methods used were MTT assay, flow cytometry, clonogenic assay, annexin V/PI method, Western blotting analysis, tumor formation assay, and in vivo in the TUNEL assay...
January 12, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28077747/first-molecular-identifications-of-necator-americanus-and-ancylostoma-ceylanicum-infecting-rural-communities-in-lower-myanmar
#11
Win Pa Pa Aung, Thi Thi Htoon, Htay Htay Tin, Oranuch Sanpool, Jurairat Jongthawin, Lakkhana Sadaow, Issarapong Phosuk, Rutchanee Ropai, Pewpan M Intapan, Wanchai Maleewong
Hookworms are enteric parasitic roundworms infecting an estimated 400 million persons worldwide. Herein, we provide the first molecular identifications of human hookworms from certain parts of rural Lower Myanmar. DNA was extracted from hookworm-positive stool samples, as determined by microscopy. DNA sequences of the partial internal transcribed spacer 1, full length 5.8S gene, and partial internal transcribed spacer 2 were determined and compared with available hookworm sequences from public databases. Of the 11 polymerase chain reaction-positive samples, eight (Bago Region, N = 4; Mon State, N = 4) yielded sequences with high similarity to those of Necator americanus A further three sequences (Mon State, N = 2; Bago Region, N = 1) showed high similarity with those of Ancylostoma ceylanicum The latter is primarily a parasite of dogs and represents a zoonosis...
January 11, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28077563/the-bioc-biogrid-corpus-full-text-articles-annotated-for-curation-of-protein-protein-and-genetic-interactions
#12
Rezarta Islamaj Doğan, Sun Kim, Andrew Chatr-Aryamontri, Christie S Chang, Rose Oughtred, Jennifer Rust, W John Wilbur, Donald C Comeau, Kara Dolinski, Mike Tyers
A great deal of information on the molecular genetics and biochemistry of model organisms has been reported in the scientific literature. However, this data is typically described in free text form and is not readily amenable to computational analyses. To this end, the BioGRID database systematically curates the biomedical literature for genetic and protein interaction data. This data is provided in a standardized computationally tractable format and includes structured annotation of experimental evidence. BioGRID curation necessarily involves substantial human effort by expert curators who must read each publication to extract the relevant information...
2017: Database: the Journal of Biological Databases and Curation
https://www.readbyqxmd.com/read/28077296/extracellular-vesicle-communication-pathways-as-regulatory-targets-of-oncogenic-transformation
#13
REVIEW
Dongsic Choi, Tae Hoon Lee, Cristiana Spinelli, Shilpa Chennakrishnaiah, Esterina D'Asti, Janusz Rak
Pathogenesis of human cancers bridges intracellular oncogenic driver events and their impact on intercellular communication. Among multiple mediators of this 'pathological connectivity' the role of extracellular vesicles (EVs) and their subsets (exosomes, ectosomes, oncosomes) is of particular interest for several reasons. The release of EVs from cancer cells represents a unique mechanism of regulated expulsion of bioactive molecules, a process that also mediates cell-to-cell transfer of lipids, proteins, and nucleic acids...
January 8, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28074539/ritterostatin-gn1n-a-cephalostatin-ritterazine-bis-steroidal-pyrazine-hybrid-selectively-targets-grp78
#14
Andrew J Ambrose, Evelyne A Santos, Paula C Jimenez, Danilo D Rocha, Diego V Wilke, Paolo Beuzer, Josh Axelrod, Ananda Kumar Kanduluru, Philip L Fuchs, Hu Cang, Letícia V Costa-Lotufo, Eli Chapman, James J La Clair
Natural products discovered using agnostic approaches, unlike rationally designed or HTS obtained leads, offer the ability to reveal new biological pathways, and hence, serve as an important vehicle to unveil new avenues in drug discovery. The ritterazine-cephalostatin family of natural products displays robust and potent anti-tumor activities, with sub-nanomolar growth inhibition against multiple cell lines and potent activity in xenograft models. Herein, we use comparative cellular and molecular biological methods to uncover the ritterazine/cephalostatin mode of cytotoxic action (MOA) in human tumor cells...
January 10, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28074274/glioma-experimental-models-and-reality
#15
REVIEW
Krissie Lenting, Roel Verhaak, Mark Ter Laan, Pieter Wesseling, William Leenders
In theory, in vitro and in vivo models for human gliomas have great potential to not only enhance our understanding of glioma biology, but also to facilitate the development of novel treatment strategies for these tumors. For reliable prediction and validation of the effects of different therapeutic modalities, however, glioma models need to comply with specific and more strict demands than other models of cancer, and these demands are directly related to the combination of genetic aberrations and the specific brain micro-environment gliomas grow in...
January 10, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28074253/c-abl-inhibition-mitigates-diet-induced-obesity-through-improving-insulin-sensitivity-of-subcutaneous-fat-in-mice
#16
Rong Wu, Jian-Guang Sun, Ji-Qiu Wang, Binhua Li, Qingsong Liu, Guang Ning, Wanzhu Jin, Zengqiang Yuan
AIMS/HYPOTHESIS: High-energy diets are among the main causes of the global epidemic of metabolic disorders, including obesity and type 2 diabetes. The mechanisms of high-energy-diet-induced metabolic disorders are complex and largely unknown. The non-receptor tyrosine kinase c-Abl plays an important role in adipogenesis in vitro but its role in vivo in the regulation of metabolism is still elusive. Hence, we sought to address the role of c-Abl in diet-induced obesity and obesity-associated insulin resistance...
January 10, 2017: Diabetologia
https://www.readbyqxmd.com/read/28073899/paper-based-microrna-expression-profiling-from-plasma-and-circulating-tumor-cells
#17
Sai Mun Leong, Karen Mei-Ling Tan, Hui Wen Chua, Mo-Chao Huang, Wai Chye Cheong, Mo-Huang Li, Steven Tucker, Evelyn Siew-Chuan Koay
BACKGROUND: Molecular characterization of circulating tumor cells (CTCs) holds great promise for monitoring metastatic progression and characterizing metastatic disease. However, leukocyte and red blood cell contamination of routinely isolated CTCs makes CTC-specific molecular characterization extremely challenging. METHODS: Here we report the use of a paper-based medium for efficient extraction of microRNAs (miRNAs) from limited amounts of biological samples such as rare CTCs harvested from cancer patient blood...
January 10, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28073608/design-synthesis-and-biological-evaluation-of-7-aryl-2-3-dihydro-1-4-dioxino-2-3-g-quinoline-derivatives-as-potential-hsp90-inhibitors-and-anticancer-agents
#18
Sina Omid Malayeri, Khalil Abnous, Atefeh Arab, Maryam Akaberi, Soghra Mehri, Afshin Zarghi, Razieh Ghodsi
A new series of quinoline analogues was designed and synthesized as Hsp90 inhibitors. The cytotoxic activity of the synthesized compounds was evaluated against three human cancer cell lines including MCF-7 (human breast cancer cells), DU145 (human prostate cancer cell lines), and A549 (adenocarcinomic human alveolar basal epithelial cells). Some of our compounds (13a-13f) showed significant cytotoxic activity on MCF-7 cells. The most potent anti-proliferative compounds were also tested against Her2, a client protein of Hsp90...
January 2, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28073359/whole-transcriptome-analysis-of-pre-invasive-and-invasive-early-squamous-lung-carcinoma-in-archival-laser-microdissected-samples
#19
Andre Koper, Leo A H Zeef, Leena Joseph, Keith Kerr, John Gosney, Mark A Lindsay, Richard Booton
BACKGROUND: Preinvasive squamous cell cancer (PSCC) are local transformations of bronchial epithelia that are frequently observed in current or former smokers. Their different grades and sizes suggest a continuum of dysplastic change with increasing severity, which may culminate in invasive squamous cell carcinoma (ISCC). As a consequence of the difficulty in isolating cancerous cells from biopsies, the molecular pathology that underlies their histological variability remains largely unknown...
January 10, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28072526/type-i-dna-topoisomerases
#20
Giovanni Capranico, Jessica Marinello, Giovanni Chillemi
DNA topoisomerases constitute a large family of essential enzymes in all domains of life. Even though they share the general reaction chemistry and the ability to govern DNA topology and resolve strand entanglements during fundamental molecular processes, they are characterized by differences in structural organization, modes of enzymatic catalysis and biological functions. Moreover, hundreds of compounds are known to interfere with bacterial and/or eukaryotic enzymes, and some of them are effective drugs for the treatment of infectious diseases and cancers...
January 10, 2017: Journal of Medicinal Chemistry
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