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CSK Methylation and pathway

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https://www.readbyqxmd.com/read/27765068/genome-wide-methylation-profiling-of-ovarian-cancer-patient-derived-xenografts-treated-with-the-demethylating-agent-decitabine-identifies-novel-epigenetically-regulated-genes-and-pathways
#1
Tushar Tomar, Steven de Jong, Nicolette G Alkema, Rieks L Hoekman, Gert Jan Meersma, Harry G Klip, Ate Gj van der Zee, G Bea A Wisman
BACKGROUND: In high-grade serous ovarian cancer (HGSOC), intrinsic and/or acquired resistance against platinum-containing chemotherapy is a major obstacle for successful treatment. A low frequency of somatic mutations but frequent epigenetic alterations, including DNA methylation in HGSOC tumors, presents the cancer epigenome as a relevant target for innovative therapy. Patient-derived xenografts (PDXs) supposedly are good preclinical models for identifying novel drug targets. However, the representativeness of global methylation status of HGSOC PDXs compared to their original tumors has not been evaluated so far...
October 20, 2016: Genome Medicine
https://www.readbyqxmd.com/read/23378895/group-ii-metabotropic-glutamate-receptors-modify-n-methyl-d-aspartate-receptors-via-src-kinase
#2
Catherine Trepanier, Gang Lei, Yu-Feng Xie, John F MacDonald
Group II metabotropic glutamate receptors (mGluR2/3) have emerged as important targets for the treatment of schizophrenia. Since hypofunction of N-methyl-D-aspartate receptors (NMDARs) has also been implicated in the etiology of schizophrenia, we examined whether postsynaptic mGluR2/3 regulate NMDAR function. Activation of mGluR2/3 significantly decreased the ratio of AMPA-to-NMDA excitatory postsynaptic currents at Schaffer Collateral-CA1 synapses and enhanced the peak of NMDA-evoked currents in acutely isolated CA1 neurons...
2013: Scientific Reports
https://www.readbyqxmd.com/read/22348736/impaired-social-memories-in-129p2-inbred-mice-are-rescued-by-reduced-csk-expression
#3
L Sinai, R Mathew, J C Roder
The C-terminal Src kinase (Csk) is an essential signaling factor guiding central nervous system (CNS) development. In the adult brain, Csk-mediated control of Src may also modulate glutamatergic synaptic transmission and N-methyl-d-aspartate receptor (NMDAR)-dependent synaptic plasticity. The regulation of N-methyl-d-aspartate (NMDA)-dependent plasticity by a myriad of kinase cascades has been investigated intensively during spatial and fear learning, while little is known about the regulatory kinases and role of NMDA-dependent plasticity during equally critical forms of social learning...
July 2012: Genes, Brain, and Behavior
https://www.readbyqxmd.com/read/21388951/down-regulation-of-the-tumor-suppressor-c-terminal-src-kinase-csk-binding-protein-cbp-pag1-is-mediated-by-epigenetic-histone-modifications-via-the-mitogen-activated-protein-kinase-mapk-phosphatidylinositol-3-kinase-pi3k-pathway
#4
Kei Suzuki, Chitose Oneyama, Hironobu Kimura, Shoji Tajima, Masato Okada
The transmembrane adaptor protein Cbp (or PAG1) functions as a suppressor of Src-mediated tumor progression by promoting the inactivation of Src. The expression of Cbp is down-regulated in Src-transformed cells and in various human cancer cells, suggesting a potential role for Cbp as a tumor suppressor. However, the mechanisms underlying the down-regulation of Cbp remain unknown. The present study shows that Cbp expression is down-regulated by epigenetic histone modifications via the MAPK/PI3K pathway. In mouse embryonic fibroblasts, transformation by oncogenic Src and Ras induced a marked down-regulation of Cbp expression...
May 6, 2011: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/18941240/zinc-signals-are-essential-for-lipopolysaccharide-induced-signal-transduction-in-monocytes
#5
COMPARATIVE STUDY
Hajo Haase, Julia L Ober-Blöbaum, Gabriela Engelhardt, Silke Hebel, Antje Heit, Holger Heine, Lothar Rink
Cytosolic alterations of calcium ion concentrations are an integral part of signal transduction. Similar functions have been hypothesized for other metal ions, in particular zinc (Zn(2+)), but this still awaits experimental verification. Zn(2+) is important for multiple cellular functions, especially in the immune system. Among other effects, it influences formation and secretion of pro-inflammatory cytokines, including TNF-alpha. Here we demonstrate that these effects are due to a physiological signaling system involving intracellular Zn(2+) signals...
November 1, 2008: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/12543813/anti-cd20-therapeutic-antibody-rituximab-modifies-the-functional-organization-of-rafts-microdomains-of-b-lymphoma-cells
#6
Isabelle Semac, Carmen Palomba, Karina Kulangara, Natacha Klages, Gerhild van Echten-Deckert, Bettina Borisch, Daniel C Hoessli
Incubation of Burkitt lymphoma-derived Raji cells at physiological temperature with submicromolar concentrations of humanized anti-CD20 antibody rituximab (RTX) redistributes CD20 to liquid-ordered, plasma membrane rafts. This accumulation of the CD20 tetraspan protein in rafts does not change the existing lipid and phosphoprotein composition but makes sphingolipids and the Src regulator Cbp/PAG (Csk-binding protein/phosphoprotein associated with glycosphingolipid-enriched microdomain) transmembrane phosphoprotein more resistant to n-octyl-beta-pyranoside, a detergent that dissociates sphingolipid clusters...
January 15, 2003: Cancer Research
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