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https://www.readbyqxmd.com/read/29352746/the-common-bean-cok-4-and-the-arabidopsis-fer-kinase-domain-share-similar-function-in-plant-growth-and-defense
#1
Rafhael Felipin Azevedo, Maria Celeste Gonçalves Vidigal, Paula Rodrigues Oblessuc, Maeli Melotto
Receptor-like kinases are membrane proteins that can be shared by diverse signaling pathways. Among them, the Arabidopsis thaliana FERONIA (FER) plays a role in the balance between distinct signals to control growth and defense. We have found that COK-4, a putative kinase encoded in the common bean anthracnose resistance locus Co-4 that is transcriptionally regulated during immune response, is highly similar to the kinase domain of FER. To assess whether COK-4 is a functional ortholog of FER, we expressed COK-4 in the wild type Col-0 and the fer-5 mutant of Arabidopsis and evaluated FER-associated traits...
January 20, 2018: Molecular Plant Pathology
https://www.readbyqxmd.com/read/29352743/co-transplantation-of-adipose-tissue-derived-stromal-cells-and-olfactory-ensheathing-cells-for-spinal-cord-injury-repair
#2
Eduardo D Gomes, Sofia S Mendes, Rita C Assunção-Silva, Fábio G Teixeira, Ana O Pires, Sandra I Anjo, Bruno Manadas, Hugo Leite-Almeida, Jeffrey M Gimble, Nuno Sousa, Angelo C Lepore, Nuno A Silva, António J Salgado
Patients suffering from Spinal Cord Injury (SCI) still have a dismal prognosis. Despite all the efforts developed in this area, currently there are no effective treatments. Therefore, cell therapies have been proposed as a viable alternative to the current treatments employed. Adipose tissue-derived Stem Cells (ASCs) and Olfactory Ensheathing Cells (OECs) have been used with promising results in different models of SCI, namely due to the regenerative properties of the secretome of the first, and the guidance capability of the second...
January 20, 2018: Stem Cells
https://www.readbyqxmd.com/read/29352742/cambogin-suppresses-dextran-sulphate-sodium-induced-colitis-by-enhancing-treg-cell-stability-and-function
#3
Yue Lu, Na-Mi Kim, Yi-Wen Jiang, Hong Zhang, Dan Zheng, Fu-Xiang Zhu, Rui Liang, Bin Li, Hong-Xi Xu
BACKGROUND AND PURPOSE: Inflammatory bowel disease (IBD) is a chronic and relapsing inflammatory disorder of gastrointestinal tract, and the dysfunction of immune regulation plays a critical role in IBD. Reflecting the limited use of current drugs and therapies for IBD treatment, it is necessary to explore novel drugs or therapies for this disease. We investigated the effect of cambogin in a mouse model of dextran sulphate sodium (DSS)-induced colitis and whether cambogin attenuates inflammation via Treg-cell-mediated immune modulation...
January 20, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29352713/clinical-variables-associated-with-overall-survival-in-metastatic-castration-resistant-prostate-cancer-patients-treated-with-sipuleucel-t-immunotherapy
#4
Xiao X Wei, Jaselle Perry, Emily Chang, Li Zhang, Robert A Hiatt, Charles J Ryan, Eric J Small, Lawrence Fong
BACKGROUND: Sipuleucel-T is an autologous cell-based cancer immunotherapy for men with asymptomatic or minimally symptomatic metastatic castration-resistant prostate cancer (mCRPC). Its approval by the Food and Drug Administration was based on demonstration of an overall survival (OS) benefit in randomized placebo-controlled phase III trials. However, treatment was associated with a prostate-specific antigen (PSA) decline in only a small minority of patients. Understanding the clinical factors that are associated with OS could help guide treatment decisions, including patient selection and the timing of sipuleucel-T relative to other therapies...
December 27, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/29352468/developmental-plasticity-of-gabaergic-neurotransmission-to-brainstem-motoneurons
#5
Lila Buls Wollman, Richard B Levine, Ralph F Fregosi
Nicotinic acetylcholine receptor (nAChR) signalling regulates neuronal differentiation and synaptogenesis. Here we test the hypothesis that developmental nicotine exposure (DNE) disrupts the development of GABAergic synaptic transmission to hypoglossal motoneurons (XIIMNs). GABAergic spontaneous and miniature inhibitory postsynaptic currents (sIPSC/mIPSC) were recorded from XIIMNs in brainstem slices from control and DNE rat pups of either sex, 1-5 days old, at baseline and following acute stimulation of nAChRs with nicotine...
January 20, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29352432/effect-of-membrane-composition-on-receptor-association-implications-of-cancer-lipidomics-on-erbb-receptors
#6
REVIEW
Aiswarya B Pawar, Durba Sengupta
The association of single transmembrane receptors, such as the ErbB receptors is a key event in initiating cell signaling networks. The interactions between these receptors have been well characterized for both ligand-driven and pre-formed dimers. However, the role of the membrane in modulating association is less well understood and assumes greater importance in light of altered membrane composition in diseased states. Here, we discuss how membrane composition has been observed to induce both structural and dynamic differences in receptor association...
January 19, 2018: Journal of Membrane Biology
https://www.readbyqxmd.com/read/29352409/recent-perspectives-on-the-molecular-basis-of-biofilm-formation-by-pseudomonas-aeruginosa-and-approaches-for-treatment-and-biofilm-dispersal
#7
REVIEW
Sinosh Skariyachan, Vaishnavi Sneha Sridhar, Swathi Packirisamy, Supreetha Toplar Kumargowda, Sneha Basavaraj Challapilli
Pseudomonas aeruginosa, a Gram-negative, rod-shaped bacterium causes widespread diseases in humans. This bacterium is frequently related to nosocomial infections such as pneumonia, urinary tract infections (UTIs) and bacteriaemia especially in immunocompromised patients. The current review focuses on the recent perspectives on biofilms formation by these bacteria. Biofilms are communities of microorganisms in which cells stick to each other and often adhere to a surface. These adherent cells are usually embedded within a self-produced matrix of extracellular polymeric substance (EPS)...
January 19, 2018: Folia Microbiologica
https://www.readbyqxmd.com/read/29352319/activation-of-pi3k-akt-and-erk-during-early-rotavirus-infection-leads-to-v-atpase-dependent-endosomal-acidification-required-for-uncoating
#8
Mahmoud Soliman, Ja-Young Seo, Deok-Song Kim, Ji-Yun Kim, Jun-Gyu Park, Mia Madel Alfajaro, Yeong-Bin Baek, Eun-Hyo Cho, Joseph Kwon, Jong-Soon Choi, Mun-Il Kang, Sang-Ik Park, Kyoung-Oh Cho
The cellular PI3K/Akt and/or MEK/ERK signaling pathways mediate the entry process or endosomal acidification during infection of many viruses. However, their roles in the early infection events of group A rotaviruses (RVAs) have remained elusive. Here, we show that late-penetration (L-P) human DS-1 and bovine NCDV RVA strains stimulate these signaling pathways very early in the infection. Inhibition of both signaling pathways significantly reduced production of viral progeny due to blockage of virus particles in the late endosome, indicating that neither of the two signaling pathways is involved in virus trafficking...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352310/leishmania-proteophosphoglycans-regurgitated-from-infected-sand-flies-accelerate-dermal-wound-repair-and-exacerbate-leishmaniasis-via-insulin-like-growth-factor-1-dependent-signalling
#9
Emilie Giraud, Tereza Lěstinová, Tamsyn Derrick, Oihane Martin, Rod J Dillon, Petr Volf, Ingrid Műller, Paul A Bates, Matthew E Rogers
Leishmania parasites are transmitted to vertebrate hosts by female phlebotomine sand flies as they bloodfeed by lacerating the upper capillaries of the dermis with their barbed mouthparts. In the sand fly midgut secreted proteophosphoglycans from Leishmania form a biological plug known as the promastigote secretory gel (PSG), which blocks the gut and facilitates the regurgitation of infective parasites. The interaction between the wound created by the sand fly bite and PSG is not known. Here we nanoinjected a sand fly egested dose of PSG into BALB/c mouse skin that lead to the differential expression of 7,907 transcripts...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352288/phospholipid-scramblase-1-interacts-with-influenza-a-virus-np-impairing-its-nuclear-import-and-thereby-suppressing-virus-replication
#10
Weiyu Luo, Jie Zhang, Libin Liang, Guangwen Wang, Qibing Li, Pengyang Zhu, Yuan Zhou, Junping Li, Yuhui Zhao, Nan Sun, Shanyu Huang, Chenchen Zhou, Yu Chang, Pengfei Cui, Pucheng Chen, Yongping Jiang, Guohua Deng, Zhigao Bu, Chengjun Li, Li Jiang, Hualan Chen
Transcription and replication of the influenza A virus (IAV) genome occur in the nucleus of infected cells and are carried out by the viral ribonucleoprotein complex (vRNP). As a major component of the vRNP complex, the viral nucleoprotein (NP) mediates the nuclear import of the vRNP complex via its nuclear localization signals (NLSs). Clearly, an effective way for the host to antagonize IAV infection would be by targeting vRNP nuclear import. Here, we identified phospholipid scramblase 1 (PLSCR1) as a binding partner of NP by using a yeast two-hybrid (Y2H) screen...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352287/ifn%C3%AE-inhibits-g-csf-induced-neutrophil-expansion-and-invasion-of-the-cns-to-prevent-viral-encephalitis
#11
Chandran Ramakrishna, Edouard M Cantin
Emergency hematopoiesis facilitates the rapid expansion of inflammatory immune cells in response to infections by pathogens, a process that must be carefully regulated to prevent potentially life threatening inflammatory responses. Here, we describe a novel regulatory role for the cytokine IFNγ that is critical for preventing fatal encephalitis after viral infection. HSV1 encephalitis (HSE) is triggered by the invasion of the brainstem by inflammatory monocytes and neutrophils. In mice lacking IFNγ (GKO), we observed unrestrained increases in G-CSF levels but not in GM-CSF or IL-17...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352268/cylindromatosis-mediates-neuronal-cell-death-in-vitro-and-in-vivo
#12
Goutham K Ganjam, Nicole Angela Terpolilli, Sebastian Diemert, Ina Eisenbach, Lena Hoffmann, Christina Reuther, Christiane Herden, Joachim Roth, Nikolaus Plesnila, Carsten Culmsee
The tumor-suppressor cylindromatosis (CYLD) is a deubiquitinating enzyme and key regulator of cell proliferation and inflammation. A genome-wide siRNA screen linked CYLD to receptor interacting protein-1 (RIP1) kinase-mediated necroptosis; however, the exact mechanisms of CYLD-mediated cell death remain unknown. Therefore, we investigated the precise role of CYLD in models of neuronal cell death in vitro and evaluated whether CYLD deletion affects brain injury in vivo. In vitro, downregulation of CYLD increased RIP1 ubiquitination, prevented RIP1/RIP3 complex formation, and protected neuronal cells from oxidative death...
January 19, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29352261/insight-into-the-role-of-pikk-family-members-and-nf-%C3%B0%C2%BAb-in-dnadamage-induced-senescence-and-senescence-associated-secretory-phenotype-of-colon-cancer-cells
#13
Anna Strzeszewska, Olga Alster, Grażyna Mosieniak, Agata Ciolko, Ewa Sikora
Senescence of cancer cells is an important outcome of treatment of many cancer types. Cell senescence is a permanent cell cycle arrest induced by stress conditions, including DNA damage. DNA damage activates DNA damage response (DDR), which involves members of the phosphatidylinositol 3-kinase-related kinase (PIKK) superfamily: protein kinases ATM, ATR, and DNA-PKcs. The so-far collected data indicate that ATM, with its downstream targets CHK2, p53, and p21, is the key protein involved in DDR-dependent senescence...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352243/nucleolin-and-erbb2-inhibition-reduces-tumorigenicity-of-erbb2-positive-breast-cancer
#14
Eya Wolfson, Shira Solomon, Eran Schmukler, Yona Goldshmit, Ronit Pinkas-Kramarski
ErbB2, a member of the ErbB family of receptor tyrosine kinases, is an essential player in the cell's growth and proliferation signaling pathways. Amplification or overexpression of ErbB2 is observed in ∼30% of breast cancer patients, and often drives cellular transformation and cancer development. Recently, we have shown that ErbB2 interacts with the nuclear-cytoplasmic shuttling protein nucleolin, an interaction which enhances cell transformation in vitro, and increases mortality risk and disease progression rate in human breast cancer patients...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352236/control-of-neural-crest-induction-by-marveld3-mediated-attenuation-of-jnk-signalling
#15
Barbara Vacca, Elena Sanchez-Heras, Emily Steed, Sophie L Busson, Maria S Balda, Shin-Ichi Ohnuma, Noriaki Sasai, Roberto Mayor, Karl Matter
Tight junctions are required for the formation of tissue barriers and function as suppressors of signalling mechanisms that control gene expression and cell behaviour; however, little is known about the physiological and developmental importance of such signalling functions. Here, we demonstrate that depletion of MarvelD3, a transmembrane protein of tight junctions, disrupts neural crest formation and, consequently, development of neural crest-derived tissues during Xenopus embryogenesis. Using embryos and explant cultures combined with a small molecule inhibitor or mutant mRNAs, we show that MarvelD3 is required to attenuate JNK signalling during neural crest induction and that inhibition of JNK pathway activation is sufficient to rescue the phenotype induced by MarvelD3 depletion...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352220/soce-induced-calcium-overload-regulates-autophagy-in-acute-pancreatitis-via-calcineurin-activation
#16
Zhen-Dong Zhu, Tao Yu, Hua-Jing Liu, Jing Jin, Jun He
Acute pancreatitis (AP) is an acute inflammatory process of the pancreas that is characterized by inflammation, edema, vacuolization and necrosis, which has significant morbidity and lethality. The pathogenesis of AP has not been established completely. An early and critical feature of AP is the aberrant signaling of Calcium (Ca2+) within the pancreatic acinar cell, termed Ca2+ overload. Store-operated Ca2+ (SOC) channels are the principal Ca2+ influx channels that contribute to Ca2+ overload in pancreatic acinar cells...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352211/hdl-nanoparticles-targeting-sonic-hedgehog-subtype-medulloblastoma
#17
Jonathan B Bell, Jonathan S Rink, Frank Eckerdt, Jessica Clymer, Stewart Goldman, C Shad Thaxton, Leonidas C Platanias
Medulloblastoma is the most common paediatric malignant brain cancer and there is a need for new targeted therapeutic approaches to more effectively treat these malignant tumours, which can be divided into four molecular subtypes. Here, we focus on targeting sonic hedgehog (SHH) subtype medulloblastoma, which accounts for approximately 25% of all cases. The SHH subtype relies upon cholesterol signalling for tumour growth and maintenance of tumour-initiating cancer stem cells (CSCs). To target cholesterol signalling, we employed biomimetic high-density lipoprotein nanoparticles (HDL NPs) which bind to the HDL receptor, scavenger receptor type B-1 (SCARB1), depriving cells of natural HDL and their cholesterol cargo...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352207/ethanol-sensitizes-hepatocytes-for-tgf-%C3%AE-triggered-apoptosis
#18
Haristi Gaitantzi, Christoph Meyer, Pia Rakoczy, Maria Thomas, Kristin Wahl, Franziska Wandrer, Heike Bantel, Hamed Alborzinia, Stefan Wölfl, Sabrina Ehnert, Andreas Nüssler, Ina Bergheim, Loredana Ciuclan, Matthias Ebert, Katja Breitkopf-Heinlein, Steven Dooley
Alcohol abuse is a global health problem causing a substantial fraction of chronic liver diseases. Abundant TGF-β-a potent pro-fibrogenic cytokine-leads to disease progression. Our aim was to elucidate the crosstalk of TGF-β and alcohol on hepatocytes. Primary murine hepatocytes were challenged with ethanol and TGF-β and cell fate was determined. Fluidigm RNA analyses revealed transcriptional effects that regulate survival and apoptosis. Mechanistic insights were derived from enzyme/pathway inhibition experiments and modulation of oxidative stress levels...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352201/cross-species-transcriptional-analysis-reveals-conserved-and-host-specific-neoplastic-processes-in-mammalian-glioma
#19
Nina P Connolly, Amol C Shetty, Jesse A Stokum, Ina Hoeschele, Marni B Siegel, C Ryan Miller, Anthony J Kim, Cheng-Ying Ho, Eduardo Davila, J Marc Simard, Scott E Devine, John H Rossmeisl, Eric C Holland, Jeffrey A Winkles, Graeme F Woodworth
Glioma is a unique neoplastic disease that develops exclusively in the central nervous system (CNS) and rarely metastasizes to other tissues. This feature strongly implicates the tumor-host CNS microenvironment in gliomagenesis and tumor progression. We investigated the differences and similarities in glioma biology as conveyed by transcriptomic patterns across four mammalian hosts: rats, mice, dogs, and humans. Given the inherent intra-tumoral molecular heterogeneity of human glioma, we focused this study on tumors with upregulation of the platelet-derived growth factor signaling axis, a common and early alteration in human gliomagenesis...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352181/samhd1-is-recurrently-mutated-in-t-cell-prolymphocytic-leukemia
#20
Patricia Johansson, Ludger Klein-Hitpass, Axel Choidas, Peter Habenberger, Bijan Mahboubi, Baek Kim, Anke Bergmann, René Scholtysik, Martina Brauser, Anna Lollies, Reiner Siebert, Thorsten Zenz, Ulrich Dührsen, Ralf Küppers, Jan Dürig
T-cell prolymphocytic leukemia (T-PLL) is an aggressive malignancy with a median survival of the patients of less than two years. Besides characteristic chromosomal translocations, frequent mutations affect the ATM gene, JAK/STAT pathway members, and epigenetic regulators. We here performed a targeted mutation analysis for 40 genes selected from a RNA sequencing of 10 T-PLL in a collection of 28 T-PLL, and an exome analysis of five further cases. Nonsynonymous mutations were identified in 30 of the 40 genes, 18 being recurrently mutated...
January 19, 2018: Blood Cancer Journal
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