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https://www.readbyqxmd.com/read/27923121/basal-cell-extracellular-matrix-adhesion-regulates-force-transmission-during-tissue-morphogenesis
#1
Katharine Goodwin, Stephanie J Ellis, Emily Lostchuck, Teresa Zulueta-Coarasa, Rodrigo Fernandez-Gonzalez, Guy Tanentzapf
Tissue morphogenesis requires force-generating mechanisms to organize cells into complex structures. Although many such mechanisms have been characterized, we know little about how forces are integrated across developing tissues. We provide evidence that integrin-mediated cell-extracellular matrix (ECM) adhesion modulates the transmission of apically generated tension during dorsal closure (DC) in Drosophila. Integrin-containing adhesive structures resembling focal adhesions were identified on the basal surface of the amnioserosa (AS), an extraembryonic epithelium essential for DC...
December 5, 2016: Developmental Cell
https://www.readbyqxmd.com/read/27923045/tumor-evolution-in-two-patients-with-basal-like-breast-cancer-a-retrospective-genomics-study-of-multiple-metastases
#2
Katherine A Hoadley, Marni B Siegel, Krishna L Kanchi, Christopher A Miller, Li Ding, Wei Zhao, Xiaping He, Joel S Parker, Michael C Wendl, Robert S Fulton, Ryan T Demeter, Richard K Wilson, Lisa A Carey, Charles M Perou, Elaine R Mardis
BACKGROUND: Metastasis is the main cause of cancer patient deaths and remains a poorly characterized process. It is still unclear when in tumor progression the ability to metastasize arises and whether this ability is inherent to the primary tumor or is acquired well after primary tumor formation. Next-generation sequencing and analytical methods to define clonal heterogeneity provide a means for identifying genetic events and the temporal relationships between these events in the primary and metastatic tumors within an individual...
December 2016: PLoS Medicine
https://www.readbyqxmd.com/read/27922892/galectin-3-expression-in-benign-and-malignant-skin-diseases-with-epidermal-hyperplasia
#3
Ze-Xin Jiang, Guo-Zhen Tan, Zhen-Rui Shi, Yu-Ping Zhang, Yan-Fang Han, Liangchun Wang
Galectin-3 has been suggested relative to tumor genesis, progression, and metastasis in basal cell carcinoma and squamous cell carcinoma that are the most common skin cancers characterized by malignant epidermal proliferation. In this study, we evaluated galectin-3 expression in seborrheic keratosis, keratoacanthoma, and infectious diseases including verruca vulgaris, condyloma acuminatum, and chromoblastomycosis that are pathologically featured by benign epidermal proliferation. Galectin-3 expression was shown by immunohistochemical staining and quantified using the Image Pro Plus V6...
November 7, 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27922186/characterization-of-the-pro-inflammatory-cytokine-il-1%C3%AE-on-butyrate-oxidation-in-colorectal-cancer-cells
#4
Megan Johnstone, Natalie Bennett, Cynthia Standifer, Alexis Smith, Anna Han, Ahmed Bettaieb, Jay Whelan, Dallas R Donohoe
Cancer, in part, is driven, by alterations in cellular metabolism that promote cell survival and cell proliferation. Identifying factors that influence this shift in cellular metabolism in cancer cells is important. Interleukin-1β (IL-1β) is a pro-inflammatory cytokine that has been reported to be elevated in colorectal cancer patients. While much is known towards the effect of dietary nutrients on regulating inflammation and the inflammatory response, which includes cytokines such as IL-1β, far less is understood how cytokines impact nutrient fate to alter cancer cell metabolism...
December 6, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27922115/perilipin-5-fine-tunes-lipid-oxidation-to-metabolic-demand-and-protects-against-lipotoxicity-in-skeletal-muscle
#5
Claire Laurens, Virginie Bourlier, Aline Mairal, Katie Louche, Pierre-Marie Badin, Etienne Mouisel, Alexandra Montagner, André Marette, Angelo Tremblay, John S Weisnagel, Hervé Guillou, Dominique Langin, Denis R Joanisse, Cedric Moro
Lipid droplets (LD) play a central role in lipid homeostasis by controlling transient fatty acid (FA) storage and release from triacylglycerols stores, while preventing high levels of cellular toxic lipids. This crucial function in oxidative tissues is altered in obesity and type 2 diabetes. Perilipin 5 (PLIN5) is a LD protein whose mechanistic and causal link with lipotoxicity and insulin resistance has raised controversies. We investigated here the physiological role of PLIN5 in skeletal muscle upon various metabolic challenges...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922011/detecting-stoichiometry-of-macromolecular-complexes-in-live-cells-using-fret
#6
Manu Ben-Johny, Daniel N Yue, David T Yue
The stoichiometry of macromolecular interactions is fundamental to cellular signalling yet challenging to detect from living cells. Fluorescence resonance energy transfer (FRET) is a powerful phenomenon for characterizing close-range interactions whereby a donor fluorophore transfers energy to a closely juxtaposed acceptor. Recognizing that FRET measured from the acceptor's perspective reports a related but distinct quantity versus the donor, we utilize the ratiometric comparison of the two to obtain the stoichiometry of a complex...
December 6, 2016: Nature Communications
https://www.readbyqxmd.com/read/27921261/attempting-to-compensate-for-reduced-neuronal-nitric-oxide-synthase-protein-with-nitrate-supplementation-cannot-overcome-metabolic-dysfunction-but-rather-has-detrimental-effects-in-dystrophin-deficient-mdx-muscle
#7
Cara A Timpani, Adam J Trewin, Vanesa Stojanovska, Ainsley Robinson, Craig A Goodman, Kulmira Nurgali, Andrew C Betik, Nigel Stepto, Alan Hayes, Glenn K McConell, Emma Rybalka
Duchenne muscular dystrophy arises from the loss of dystrophin and is characterized by calcium dysregulation, muscular atrophy, and metabolic dysfunction. The secondary reduction of neuronal nitric oxide synthase (nNOS) from the sarcolemma reduces NO production and bioavailability. As NO modulates glucose uptake, metabolism, and mitochondrial bioenergetics, we investigated whether an 8-week nitrate supplementation regimen could overcome metabolic dysfunction in the mdx mouse. Dystrophin-positive control (C57BL/10) and dystrophin-deficient mdx mice were supplemented with sodium nitrate (85 mg/l) in drinking water...
December 5, 2016: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/27920984/staphylococcus-lugdunensis-endocarditis-with-destruction-of-the-ventricular-septum-and-multiple-native-valves
#8
Celestine Ishiekwene, Monica Ghitan, Margaret Kuhn-Basti, Edward Chapnick, Yu Shia Lin
Staphylococcus lugdunensis (S. lugdunensis) is a coagulase negative staphylococcus (CoNS) that can cause destructive infective endocarditis. S. lugdunensis, unlike other CoNS, should be considered to be a pathogen. We report the first case of S. lugdunensis endocarditis causing ventricular septal defect and destruction of the aortic and mitral valves. A 53-year-old male with morbid obesity and COPD presented with intermittent fever and progressive shortness of breath for 2 weeks. Chest examination showed bilateral basal crepitations, and a grade 2 systolic murmur along the right sternal border...
2017: IDCases
https://www.readbyqxmd.com/read/27920679/basal-cell-carcinoma-on-the-sole-an-easily-missed-cancer
#9
Natalie L Hone, Radhika Grandhi, Adam A Ingraffea
Basal cell carcinoma (BCC) is the most common skin cancer, and solar ultraviolet ray exposure is the most significant risk factor for its development. The plantar foot is infrequently exposed to the sun, thus the presence of BCC on the sole is rare. We report a case of BCC on the sole of the foot and its treatment in the hope to facilitate its detection.
September 2016: Case Reports in Dermatology
https://www.readbyqxmd.com/read/27920576/hmmr-antisense-rna-1-a-novel-long-noncoding-rna-regulates-the-progression-of-basal-like-breast-cancer-cells
#10
Wei Liu, Jun Ma, Yong Cheng, Hongbo Zhang, Wengguang Luo, Hongyan Zhang
Recently, accumulating evidence has suggested that long noncoding RNAs (lncRNAs) play crucial roles in carcinogenesis and cancer progression. Hyaluronan-mediated motility receptor (HMMR) is an essential cancer-related gene in basal-like breast cancer (BLBC). In our study, HMMR antisense RNA 1 (HMMR-AS1) was analyzed in BLBC patients through polymerase chain reaction analysis. Here, we found that the expression of HMMR was positively correlated with HMMR-AS1 (RP11-80G.1). When HMMR-AS1 (RP11-80G.1) was knocked down, the expression of HMMR markedly reduced...
2016: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/27920558/monitoring-the-effects-of-doxorubicin-on-3d-spheroid-tumor-cells-in-real-time
#11
NamHuk Baek, Ok Won Seo, MinSung Kim, John Hulme, Seong Soo A An
Recently, increasing numbers of cell culture experiments with 3D spheroids presented better correlating results in vivo than traditional 2D cell culture systems. 3D spheroids could offer a simple and highly reproducible model that would exhibit many characteristics of natural tissue, such as the production of extracellular matrix. In this paper numerous cell lines were screened and selected depending on their ability to form and maintain a spherical shape. The effects of increasing concentrations of doxorubicin (DXR) on the integrity and viability of the selected spheroids were then measured at regular intervals and in real-time...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27920251/a-homeostatic-shift-facilitates-endoplasmic-reticulum-proteostasis-through-transcriptional-integration-of-proteostatic-stress-response-pathways
#12
Liam Baird, Tadayuki Tsujita, Eri Kobayashi, Ryo Funayama, Takeshi Nagashima, Keiko Nakayama, Masayuki Yamamoto
Eukaryotic cells maintain protein homeostasis through the activity of multiple basal and inducible systems, which function in concert to allow cells to adapt to a wide range of environmental conditions. Whilst the transcriptional programs regulating individual pathways have been studied in detail, it is not known how the different pathways are transcriptionally integrated such that a deficiency in one pathway can be compensated by a change in an auxiliary response. One such pathway that plays an essential role in many proteostasis responses is the ubiquitin-proteasome system (UPS), which functions to degrade damaged, unfolded or short half-life proteins...
December 5, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27920067/injectable-diphenhydramine-used-as-anaesthetic-for-wide-local-excision-with-flap-closure
#13
Laura E Pickett, Jillian Macdonald
BACKGROUND: Lidocaine-allergic patients pose a challenge for cutaneous surgical procedures. We present a case of a successful wide local excision with flap closures on the face using topical tetracaine followed by infiltration with 1% diphenhydramine. CASE SUMMARY: An 84-year-old woman, with a lidocaine intolerance, presented to the Mohs surgery clinic for wide local excision of a nodular basal cell carcinoma on her right medial cheek. Successful anaesthesia was achieved using topical 4% tetracaine followed by intradermal and subcutaneous injection of 1% diphenhydramine...
December 5, 2016: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/27919679/regulation-of-protein-kinase-c-epsilon-and-its-age-dependence
#14
Chen Kang, Jingping Qin, Wil Osei, Keli Hu
Protein kinase C (PKC) is an important mediator in the cardioprotection of ischemic preconditioning and has been shown to translocate to mitochondria upon activation. However, little is known about the cellular signaling underlying the translocation of PKC isoforms to mitochondria and its age-dependence. The present study aimed to explore whether adenosine-induced translocation of PKCε to mitochondria is mediated by caveolin-3 and/or adenosine A2B receptor/PI3 kinase mediated signaling, and whether the mitochondrial targeting of PKCε is age-related...
December 2, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27919433/sodc-modulates-ras-and-pkb-signaling-in-dictyostelium
#15
Boris Castillo, Seon-Hee Kim, Mujataba Sharief, Tong Sun, Lou W Kim
We have previously reported that the basal RasG activity is aberrantly high in cells lacking Superoxide dismutase C (SodC). Here we report that other Ras proteins such as RasC and RasD activities are not affected in sodC(-) cells and mutagenesis studies showed that the presence of the Cys(118) in the Ras proteins is essential for the superoxide-mediated activation of Ras proteins in Dictyostelium. In addition to the loss of SodC, lack of extracellular magnesium ions increased the level of intracellular superoxide and active RasG proteins...
November 30, 2016: European Journal of Cell Biology
https://www.readbyqxmd.com/read/27919341/human-epidermal-stem-cells-role-in-adverse-skin-reactions-and-carcinogenesis-from-radiation
#16
Michèle T Martin, Adeline Vulin, Jolyon H Hendry
In human skin, keratinopoiesis is based on a functional hierarchy among keratinocytes, with rare slow-cycling stem cells responsible for the long-term maintenance of the tissue through their self-renewal potential, and more differentiated daughter progenitor cells actively cycling to permit epidermal renewal and turn-over every month. Skin is a radio-responsive tissue, developing all types of radiation damage and pathologies, including early tissue reactions such as dysplasia and denudation in epidermis, and later fibrosis in the dermis and acanthosis in epidermis, with the TGF-beta 1 pathway as a known master switch...
October 2016: Mutation Research
https://www.readbyqxmd.com/read/27917448/lithium-reversibly-inhibits-schwann-cell-proliferation-and-differentiation-without-inducing-myelin-loss
#17
Gonzalo Piñero, Randall Berg, Natalia Denise Andersen, Patricia Setton-Avruj, Paula Virginia Monje
This study was undertaken to examine the bioactivity, specificity, and reversibility of lithium's action on the growth, survival, proliferation, and differentiation of cultured Schwann cells (SCs). In isolated SCs, lithium promoted a state of cell cycle arrest that featured extensive cell enlargement and c-Jun downregulation in the absence of increased expression of myelin-associated markers. In addition, lithium effectively prevented mitogen-induced S-phase entry without impairing cell viability. When lithium was administered together with differentiating concentrations of cyclic adenosine monophosphate (cAMP) analogs, a dramatic inhibition of the expression of the master regulator of myelination Krox-20 was observed...
December 5, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27917371/hijacker-of-the-antitumor-immune-response-autophagy-is-showing-its-worst-facet
#18
REVIEW
Elodie Viry, Muhammad Zaeem Noman, Tsolère Arakelian, Audrey Lequeux, Salem Chouaib, Guy Berchem, Etienne Moussay, Jérôme Paggetti, Bassam Janji
Macroautophagy (hereafter referred to as autophagy) is a housekeeping process constitutively executed at basal level in all cells to promote cellular homeostasis by regulating organelle and protein turnover. However, autophagy deregulation caused by several stress factors, such as hypoxia, is prevalent in many cancers. It is now well established that autophagy can act as tumor suppressor or tumor promoter depending on tumor type, stage, and genetic context. In developed tumors, autophagy promotes the survival of cancer cells and therefore operates as a cell resistance mechanism...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27917125/comparison-of-liver-cell-models-using-the-basel-phenotyping-cocktail
#19
Benjamin Berger, Massimiliano Donzelli, Swarna Maseneni, Franziska Boess, Adrian Roth, Stephan Krähenbühl, Manuel Haschke
Currently used hepatocyte cell systems for in vitro assessment of drug metabolism include hepatoma cell lines and primary human hepatocyte (PHH) cultures. We investigated the suitability of the validated in vivo Basel phenotyping cocktail (caffeine [CYP1A2], efavirenz [CYP2B6], losartan [CYP2C9], omeprazole [CYP2C19], metoprolol [CYP2D6], midazolam [CYP3A4]) in vitro and characterized four hepatocyte cell systems (HepG2 cells, HepaRG cells, and primary cryopreserved human hepatocytes in 2-dimensional [2D] culture or in 3D-spheroid co-culture) regarding basal metabolism and CYP inducibility...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27916966/alpha-and-beta-cyclodextrin-inclusion-complexes-with-5-fluorouracil-characterization-and-cytotoxic-activity-evaluation
#20
Cristina Di Donato, Margherita Lavorgna, Roberto Fattorusso, Carla Isernia, Marina Isidori, Gaetano Malgieri, Concetta Piscitelli, Chiara Russo, Luigi Russo, Rosa Iacovino
Cyclodextrins are natural macrocyclic oligosaccharides able to form inclusion complexes with a wide variety of guests, affecting their physicochemical and pharmaceutical properties. In order to obtain an improvement of the bioavailability and solubility of 5-fluorouracil, a pyrimidine analogue used as chemotherapeutic agent in the treatment of the colon, liver, and stomac cancers, the drug was complexed with alpha- and beta-cyclodextrin. The inclusion complexes were prepared in the solid state by kneading method and characterized by Fourier transform-infrared (FT-IR) spectroscopy and X-ray powder diffractometry...
December 1, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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