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Protein kinase C

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https://www.readbyqxmd.com/read/29792724/a-systematic-understanding-of-signaling-by-erbb2-in-cancer-using-phosphoproteomics
#1
C Sidhanth, P Manasa, S Krishnapriya, S Sneha, S Bindhya, R P Nagare, M Garg, T S Ganesan
ErbB2 is an important receptor tyrosine kinase and a member of the ErbB family. Although it does not have a specific ligand, it transmits signals downstream by heterodimerization with other receptors in the family. It plays a major role in a variety of cellular responses like proliferation, differentiation, and adhesion. ErbB2 is amplified at the DNA level in breast cancer (20%-30%) and gastric cancer (10%-20%), and trastuzumab is effective as a therapeutic antibody. This review is a critical analysis of the currently published data on the signaling pathways of ErbB2 and the interacting proteins...
May 24, 2018: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29792687/co-mobility-of-gabarap-and-phosphatidylinositol-4-kinase-2a-on-cytoplasmic-vesicles
#2
Yan Chen, Hui-Qiao Sun, John P Eichorst, Joseph P Albanesi, Helen Yin, Joachim D Mueller
We previously reported that recruitment of the Type IIA phosphatidylinositol 4-kinase (PI4K2A) to autophagosomes by GABARAP, a member of the Atg8 family of autophagy-related proteins, is important for autophagosome-lysosome fusion. Because both PI4K2A and GABARAP have also been implicated in the intracellular trafficking of plasma membrane receptors in the secretory/endocytic pathway, we characterized their interaction in cells under non-autophagic conditions. Fluorescence fluctuation spectroscopy measurements revealed that GABARAP exists predominantly as a cytosolic monomer in live cells, but is recruited to small cytoplasmic vesicles upon overexpression of PI4K2A...
May 24, 2018: Biochemistry
https://www.readbyqxmd.com/read/29792386/disparate-effects-of-shb-gene-deficiency-on-disease-characteristics-in-murine-models-of-myeloid-b-cell-and-t-cell-leukemia
#3
Maria Jamalpour, Xiujuan Li, Karin Gustafsson, Jeffrey W Tyner, Michael Welsh
The Src homology-2 domain protein B is an adaptor protein operating downstream of tyrosine kinases. The Shb gene knockout has been found to accelerate p210 Breakpoint cluster region-cAbl oncogene 1 tyrosine kinase-induced leukemia. In human myeloid leukemia were tumors with high Src homology-2 domain protein B mRNA content, tumors were, however, associated with decreased latency and myeloid leukemia exhibiting immune cell characteristics. Thus, the aim of this study was to investigate the effects of Shb knockout on the development of leukemia in three additional models, that is, colony stimulating factor 3 receptor-T618I-induced neutrophilic leukemia, p190 Breakpoint cluster region-cAbl oncogene 1 tyrosine kinase-induced B-cell leukemia, and G12D-Kras-induced T-cell leukemia/thymic lymphoma...
April 2018: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29792352/probing-the-settlement-signals-of-amphibalanus-amphitrite
#4
Mado Kotsiri, Maria Protopapa, Gesthimani-Myrto Roumelioti, Athena Economou-Amilli, Eleni K Efthimiadou, Skarlatos G Dedos
To achieve their reproductive potential, barnacles combine tactile exploration of surface structural properties and integration of cellular signals originating from their antennular sensory setae within a developmentally defined, temporally narrow window of settlement opportunity. Behavioural assays with cyprids coupled with biometric analysis of scanning electron microscopy-acquired images in the presence of specific chemical compounds were used to investigate how settlement on a substratum is altered in response to the presence of these compounds...
May 24, 2018: Biofouling
https://www.readbyqxmd.com/read/29792195/histamine-activates-inflammatory-response-and-depresses-casein-synthesis-in-mammary-gland-of-dairy-cows-during-sara
#5
Guangjun Chang, Lailai Wang, Nana Ma, Wenwen Zhang, Huanmin Zhang, Hongyu Dai, Xiangzhen Shen
BACKGROUND: Mounting evidences observed that subacute ruminal acidosis (SARA) induced by high concentration (HC) diet increases the translocation of histamine from digestive tract into circulation causing a diverse of diseases in dairy cows. However, it is largely unknown how it does affect the function of mammary gland and milk quality. Hence, this study aims to observe the effects of histamine derived from the digestive tract on the inflammatory response and casein synthesis in the mammary glands during SARA...
May 23, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29790927/syntrophin-binds-directly-to-multiple-spectrin-like-repeats-in-dystrophin-and-mediates-binding-of-nnos-to-repeats-16-17
#6
Marvin E Adams, Guy L Odom, Min Jeong Kim, Jeffrey S Chamberlain, Stanley C Froehner
Mutation of the gene encoding dystrophin leads to Duchenne and Becker muscular dystrophy (DMD and BMD). Currently, dystrophin is thought to function primarily as a structural protein, connecting the muscle cell actin cytoskeleton to the extra-cellular matrix. In addition to this structural role, dystrophin also plays an important role as a scaffold that organizes an array of signaling proteins including sodium, potassium, and calcium channels, kinases, and nitric oxide synthase (nNOS). Many of these signaling proteins are linked to dystrophin via syntrophin, an adapter protein that is known to bind directly to two sites in the carboxyl terminal region of dystrophin...
May 22, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29790899/advances-in-the-systemic-treatment-of-melanoma-brain-metastases
#7
I C Glitza Oliva, G Schvartsman, H Tawbi
Of the solid tumor types that metastasize to the brain, melanoma has the highest propensity to form brain metastases. In addition, much remains unknown regarding the pathophysiology involved in melanoma cell extravasation through the blood-brain barrier, which enables interactions with the microenvironment, and melanoma cell transcriptomic responses to brain-specific cues. However, recent developments in targeted therapy and immunotherapy have generated considerable optimism regarding the treatment of metastatic melanoma...
May 22, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29789527/regulator-of-chromatin-condensation-1-abrogates-the-g1-cell-cycle-checkpoint-via-cdk1-in-human-papillomavirus-e7-expressing-epithelium-and-cervical-cancer-cells
#8
Lijun Qiao, Jingyi Zheng, Yonghao Tian, Qishu Zhang, Xiao Wang, Jason J Chen, Weifang Zhang
Regulator of chromatin condensation 1 (RCC1) is a major guanine-nucleotide exchange factor for Ran GTPase and plays key roles in nucleo-cytoplasmic transport, mitosis, and nuclear envelope assembly. RCC1 is known to be a critical cell cycle regulator whose loss causes G1 phase arrest, but the molecular basis for this regulation is poorly understood. Furthermore, little is known about the relationship between RCC1 and carcinomas. Human papillomavirus (HPV) infection is highly associated with the development of cervical cancer...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29789508/dual-effects-of-metformin-on-adipogenic-differentiation-of-3t3-l1-preadipocyte-in-ampk-dependent-and-independent-manners
#9
Dian Chen, Ying Wang, Kaikai Wu, Xingya Wang
Metformin has been reported to have body weight lowering effects while treating type 2 diabetes. However, limited studies examined the effects of metformin on adipogenesis in vitro, and available data are inconclusive and contradictory. In this study, we examined the effects of a variety of concentrations of metformin on adipocyte differentiation of 3T3-L1 preadipocytes and found metformin exhibits a dual effect on adipogenesis. Metformin at lower concentrations (1.25⁻2.5 mM) significantly induced adipogenesis while at higher concentrations (5⁻10 mM) metformin significantly inhibited adipogenesis in 3T3-L1 cells...
May 23, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29789397/the-wnt-antagonist-and-secreted-frizzled-related-protein-5-implications-on-lipid-metabolism-inflammation-and-type-2-diabetes-mellitus
#10
Ling-Bin Liu, Xiao-Dong Chen, Xiang-Yu Zhou, Qing Zhu
Various reports have suggested that secreted frizzled-related protein 5 (SFRP5) plays a regulatory role in the processes of cellular proliferation and differentiation, by means of inactivating the Wnt/β-catenin signaling pathway. Recently, SFRP5 has been identified as an anti-inflammatory adipokine, which may be induced during preadipocyte proliferation, differentiation, and maturation. This review aims to identify the recent progress in the research and development of SFRP5 that can play a role in influencing lipid metabolism, inflammation and type 2 diabetes mellitus (T2DM)...
May 22, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29789370/a-single-domain-response-regulator-functions-as-an-integrating-hub-to-coordinate-general-stress-response-and-development-in-alphaproteobacteria
#11
C Lori, A Kaczmarczyk, I de Jong, U Jenal
The alphaproteobacterial general stress response is governed by a conserved partner-switching mechanism that is triggered by phosphorylation of the response regulator PhyR. In the model organism Caulobacter crescentus , PhyR was proposed to be phosphorylated by the histidine kinase PhyK, but biochemical evidence in support of such a role of PhyK is missing. Here, we identify a single-domain response regulator, MrrA, that is essential for general stress response activation in C. crescentus We demonstrate that PhyK does not function as a kinase but accepts phosphoryl groups from MrrA and passes them on to PhyR, adopting the role of a histidine phosphotransferase...
May 22, 2018: MBio
https://www.readbyqxmd.com/read/29789297/the-duf1669-domain-of-fam83-family-proteins-anchor-casein-kinase-1-isoforms
#12
Luke J Fulcher, Polyxeni Bozatzi, Theresa Tachie-Menson, Kevin Z L Wu, Timothy D Cummins, Joshua C Bufton, Daniel M Pinkas, Karen Dunbar, Sabin Shrestha, Nicola T Wood, Simone Weidlich, Thomas J Macartney, Joby Varghese, Robert Gourlay, David G Campbell, Kevin S Dingwell, James C Smith, Alex N Bullock, Gopal P Sapkota
Members of the casein kinase 1 (CK1) family of serine-threonine protein kinases are implicated in the regulation of many cellular processes, including the cell cycle, circadian rhythms, and Wnt and Hedgehog signaling. Because these kinases exhibit constitutive activity in biochemical assays, it is likely that their activity in cells is controlled by subcellular localization, interactions with inhibitory proteins, targeted degradation, or combinations of these mechanisms. We identified members of the FAM83 family of proteins as partners of CK1 in cells...
May 22, 2018: Science Signaling
https://www.readbyqxmd.com/read/29788979/marcks-and-marcks-like-proteins-in-development-and-regeneration
#13
REVIEW
Mohamed El Amri, Una Fitzgerald, Gerhard Schlosser
BACKGROUND: The Myristoylated Alanine-Rich C-kinase Substrate (MARCKS) and MARCKS-like protein 1 (MARCKSL1) have a wide range of functions, ranging from roles in embryonic development to adult brain plasticity and the inflammatory response. Recently, both proteins have also been identified as important players in regeneration. Upon phosphorylation by protein kinase C (PKC) or calcium-dependent calmodulin-binding, MARCKS and MARCKSL1 translocate from the membrane into the cytosol, modulating cytoskeletal actin dynamics and vesicular trafficking and activating various signal transduction pathways...
May 22, 2018: Journal of Biomedical Science
https://www.readbyqxmd.com/read/29788274/arabidopsis-skp1-like-protein-13-ask13-positively-regulates-seed-germination-and-seedling-growth-under-abiotic-stresses
#14
Venkateswara Rao, Bhanu Prakash Petla, Pooja Verma, Prafull Salvi, Nitin Uttam Kamble, Sharboni Ghosh, Harmeet Kaur, Saurabh C Saxena, Manoj Majee
SKP1 (S-Phase Kinase Associated Protein1) proteins are key members of the SCF (SKP-Cullin-F-box protein) E3 ligase complexes that ubiquitinate the target proteins and play diverse roles in plant biology. However, as compared to other members of the SCF complex, study of SKP1-like proteins is very limited in plants. In the present work, we report that Arabidopsis SKP1-like protein13 (ASK13) is differentially regulated in different organs, during seed development and germination, and is upregulated in response to abiotic stresses...
May 18, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29788004/juvenile-traumatic-brain-injury-results-in-cognitive-deficits-associated-with-impaired-endoplasmic-reticulum-stress-and-early-tauopathy
#15
Michael J Hylin, Ryan C Holden, Aidan C Smith, Aric F Logsdon, Rabia Qaiser, Brandon P Lucke-Wold
The leading cause of death in the juvenile population is trauma, and in particular neurotrauma. The juvenile brain response to neurotrauma is not completely understood. Endoplasmic reticulum (ER) stress has been shown to contribute to injury expansion and behavioral deficits in adult rodents and furthermore has been seen in adult postmortem human brains diagnosed with chronic traumatic encephalopathy. Whether endoplasmic reticulum stress is increased in juveniles with traumatic brain injury (TBI) is poorly delineated...
May 22, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29787772/ginkgolide-k-promotes-astrocyte-proliferation-and-migration-after-oxygen-glucose-deprivation-via-inducing-protective-autophagy-through-the-ampk-mtor-ulk1-signaling-pathway
#16
Ying Zhang, Ju-Mei Miao
Ischemic stroke is the leading cause of death around the world. Ginkgolide K (GK) has been used to treat ischemic stroke due to its neuroprotective potential. However, the molecular mechanism underlying the neuroprotective effect of GK in ischemic stroke is still almost blank. In this study, astrocytes were divided into four groups: control group, oxygen-glucose deprivation (OGD) group, OGD + GK group and OGD + GK + Compound C (CC) group. The viability and proliferation of astrocytes were examined by Cell Counting Kit-8 assay and 5-ethynyl-20-deoxyuridine (EdU) assay, respectively...
May 19, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29787755/vibsanin-a-sensitizes-human-acute-myeloid-leukemia-cells-to-tyrosine-kinase-inhibitor-induced-myeloid-differentiation-via-activation-of-pkc-and-upregulation-of-lyn
#17
Xing Shen, Shuang Xing, Lu Zhang, Fangmin Wang, Hongling Ou, Yajun Shan, He Xiao, Guolin Xiong, Xinru Wang, Qinshi Zhao, Yuwen Cong, Zuyin Yu
Differentiation therapies have been proposed to overcome the impaired cell differentiation in acute myeloid leukemia (AML). However, thus far the all-trans retinoic acid-based differentiation therapy has been the only successful modality in treating acute promyelocytic leukemia. Here, we showed that vibsanin A, a novel protein kinase C (PKC) activator, sensitized AML cells to tyrosine kinase inhibitor (TKI)-induced differentiation. Vibsanin A augmented the ability of TKIs to induce growth inhibition and G1 cell cycle arrest of AML cells...
May 19, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29787428/use-of-proteomic-and-hematology-biomarkers-for-prediction-of-hematopoietic-acute-radiation-syndrome-severity-in-baboon-radiation-models
#18
William F Blakely, David L Bolduc, Jeff Debad, George Sigal, Matthias Port, Michael Abend, Marco Valente, Michel Drouet, Francis Hérodin
Use of plasma proteomic and hematological biomarkers represents a promising approach to provide useful diagnostic information for assessment of the severity of hematopoietic acute radiation syndrome. Eighteen baboons were evaluated in a radiation model that underwent total-body and partial-body irradiations at doses of Co gamma rays from 2.5 to 15 Gy at dose rates of 6.25 cGy min and 32 cGy min. Hematopoietic acute radiation syndrome severity levels determined by an analysis of blood count changes measured up to 60 d after irradiation were used to gauge overall hematopoietic acute radiation syndrome severity classifications...
July 2018: Health Physics
https://www.readbyqxmd.com/read/29786956/rho-kinase-and-protein-kinase-c-pathways-are-responsible-for-enhanced-carbachol-contraction-in-permeabilized-detrusor-in-a-rat-model-of-cystitis
#19
Merve Denizalti, N Tugba Durlu-Kandilci, G Simsek, T Emrah Bozkurt, Inci Sahin-Erdemli
Interstitial cystitis is a syndrome characterized by detrusor overactivity and chronic inflammation of the bladder. The mechanisms responsible for the altered smooth muscle contractility remain poorly understood. The aim of the study was to investigate the role of intracellular signalling pathways in carbachol-induced detrusor contraction in a rat model of interstitial cystitis. Cyclophosphamide (150 mg/kg, dissolved in saline) was injected to rats (Sprague-Dawley, female, 200-250 g) intraperitoneally once a day on days 1, 4 and 7 to induce interstitial cystitis...
May 22, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29786754/regulation-of-interferon-signaling-and-hcv%C3%A2-rna-replication-by-extracellular-matrix
#20
Takuya Kuwashiro, Shinji Iwane, Xia Jinghe, Sachiko Matsuhashi, Yuichiro Eguchi, Keizo Anzai, Kazuma Fujimoto, Toshihiko Mizuta, Naoya Sakamoto, Masanori Ikeda, Nobuyuki Kato, Iwata Ozaki
Although interferon (IFN)‑based treatment of patients with chronic hepatitis C virus (HCV) infection is widely applied, treatment resistance is often observed in patients with advanced liver fibrosis. Given that the molecular mechanisms of IFN resistance in liver fibrosis remain elusive, the present study investigated the effects of extracellular matrix (ECM) on IFN signaling in hepatic cells. The native HuH‑7 human hepatoma cell line and HuH‑7 cells were stably transfected with full‑length HCV‑RNA fused with Renilla luciferase (OR6 cells) were cultured on ECM‑coated dishes or non‑coated plastic dishes (NDs), and treated with human IFN‑α...
May 18, 2018: International Journal of Molecular Medicine
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