keyword
MENU ▼
Read by QxMD icon Read
search

UBiquitine

keyword
https://www.readbyqxmd.com/read/29141377/-the-clinical-significance-of-anti-ubiquitin-c-terminal-hydrolase-l1-autoantibodies-in-the-diagnosis-of-neuropsychiatric-systemic-lupus-erythematosus
#1
Y Meng, H Sun, J J Xu, R Li, Y Wang
Objective: To analyze the clinical significance of anti- ubiquitin C-terminal hydrolase L1(UCHL-1)autoantibodies in neuropsychiatric systemic lupus erythematosus (NPSLE). Methods: Autoantibodies in cerebrospinal fluid specimen of 56 inpatients were detected by using indirect enzyme-linked immunosorbent assay (ELISA) and the fullmedical history and clinical manifestations were analyzed retrospectively. Results: The levels of anti-UCHL-1 autoantibodies in NPSLE group were significant higher than that in other controls (P<0...
November 14, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29141239/exposing-toxoplasma-gondii-hiding-inside-the-vacuole-a-role-for-gbps-autophagy-and-host-cell-death
#2
REVIEW
Jeroen P Saeij, Eva-Maria Frickel
The intracellular parasite Toxoplasma gondii resides inside a vacuole, which shields it from the host's intracellular defense mechanisms. The cytokine interferon gamma (IFNγ) upregulates host cell effector pathways that are able to destroy the vacuole, restrict parasite growth and induce host cell death. Interferon-inducible GTPases such as the Guanylate Binding Proteins (GBPs), autophagy proteins and ubiquitin-driven mechanisms play important roles in Toxoplasma control in mice and partly also in humans. The host inflammasome is regulated by GBPs in response to bacterial infection in murine cells and may also respond to Toxoplasma infection...
November 12, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/29141220/phosphorylation-and-ubiquitination-regulate-protein-phosphatase-5-activity-and-its-prosurvival-role-in-kidney-cancer
#3
Natela Dushukyan, Diana M Dunn, Rebecca A Sager, Mark R Woodford, David R Loiselle, Michael Daneshvar, Alexander J Baker-Williams, John D Chisholm, Andrew W Truman, Cara K Vaughan, Timothy A Haystead, Gennady Bratslavsky, Dimitra Bourboulia, Mehdi Mollapour
The serine/threonine protein phosphatase 5 (PP5) regulates multiple cellular signaling networks. A number of cellular factors, including heat shock protein 90 (Hsp90), promote the activation of PP5. However, it is unclear whether post-translational modifications also influence PP5 phosphatase activity. Here, we show an "on/off switch" mechanism for PP5 regulation. The casein kinase 1δ (CK1δ) phosphorylates T362 in the catalytic domain of PP5, which activates and enhances phosphatase activity independent of Hsp90...
November 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/29139175/hax-1-regulates-the-proliferation-and-apoptosis-of-endothelial-progenitor-cells-through-akt-pathway-modulation
#4
Xin-Bin Guo, Xin Deng, Ying Wei
Endothelial precursor cells (EPCs) are involved in vasculogenesis of various physiological and pathological processes. The proliferation and survival mechanism of EPCs needs to be explored further for the purpose of developing an effective glioma treatment. Hematopoietic-substrate-1 associated protein X-1 (HAX-1) has been reported as an anti-apoptosis protein that plays an important role in several malignant tumors. However, the effect and mechanism of HAX-1 on EPCs remains unknown. This study aims to investigate the effect of HAX-1 on the proliferation and apoptosis EPCs and explore its mechanism...
November 15, 2017: Stem Cells
https://www.readbyqxmd.com/read/29139123/new-insights-into-the-mechanisms-of-phytochrome-cryptochrome-coaction
#5
REVIEW
Qin Wang, Qing Liu, Xu Wang, Zecheng Zuo, Yoshito Oka, Chentao Lin
Contents I. II. III. IV. SUMMARY: Plants perceive and respond to light signals by multiple sensory photoreceptors, including phytochromes and cryptochromes, which absorb different wavelengths of light to regulate genome expression and plant development. Photophysiological analyses have long revealed the coordinated actions of different photoreceptors, a phenomenon referred to as the photoreceptor coaction. The mechanistic explanations of photoreceptor coactions are not fully understood...
November 15, 2017: New Phytologist
https://www.readbyqxmd.com/read/29138839/sumo1-ubc9%C3%A2-decreased-nox1-activity-inhibits-reactive-oxygen-species-generation-and-apoptosis-in-diabetic-retinopathy
#6
Jiaoli Hu, Pengcheng Xue, Xinbang Mao, Lin Xie, Guodong Li, Zhipeng You
Diabetic retinopathy (DR) is an increasing global health concern that causes vision loss and blindness. Reactive oxygen species (ROS) are considered to be a principal cause of DR. An important source of ROS is the oxidization of NADPH. In the present study, NADPH oxidase 1 (Nox1)‑expressing human retinal epithelial cell (HREC) lines were generated and infected with small ubiquitin‑like modifier 1 (SUMO1) and/or ubiquitin conjugating enzyme E2 I (UBC9) lentiviral pGMLV constructs. The viabilities, apoptotic capacities and ROS production levels of the HREC lines were quantified using Hoechst 33258, annexin V/propidium iodide and dichlorodihydrofluorescein diacetate assays, respectively...
November 13, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29138676/resveratrol-modulation-of-protein-expression-in-parkin-mutant-human-skin-fibroblasts-a-proteomic-approach
#7
Daniele Vergara, Antonio Gaballo, Anna Signorile, Anna Ferretta, Paola Tanzarella, Consiglia Pacelli, Marco Di Paola, Tiziana Cocco, Michele Maffia
In this study, we investigated by two-dimensional gel electrophoresis (2-DE) and mass spectrometry (MS) analysis the effects of resveratrol treatment on skin primary fibroblasts from a healthy subject and from a parkin-mutant early onset Parkinson's disease patient. Parkin, an E3 ubiquitin ligase, is the most frequently mutated gene in hereditary Parkinson's disease. Functional alteration of parkin leads to impairment of the ubiquitin-proteasome system, resulting in the accumulation of misfolded or aggregated proteins accountable for the neurodegenerative process...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29138532/ubiquitin-specific-protease-2-modulates-the-lipopolysaccharide-elicited-expression-of-proinflammatory-cytokines-in-macrophage-like-hl-60-cells
#8
Hiroshi Kitamura, Takeshi Ishino, Yoshinori Shimamoto, Jun Okabe, Tomomi Miyamoto, Eiki Takahashi, Ichiro Miyoshi
We investigated the regulatory roles of USP2 in mRNA accumulation of proinflammatory cytokines in macrophage-like cells after stimulation with a toll-like receptor (TLR) 4 ligand, lipopolysaccharide (LPS). Human macrophage-like HL-60 cells, mouse macrophage-like J774.1 cells, and mouse peritoneal macrophages demonstrated negative feedback to USP2 mRNA levels after LPS stimulation, suggesting that USP2 plays a significant role in LPS-stimulated macrophages. USP2 knockdown (KD) by short hairpin RNA in HL-60 cells promoted the accumulation of transcripts for 25 of 104 cytokines after LPS stimulation...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29138251/mitochondrial-inner-membrane-protease-yme1-degrades-outer-membrane-proteins-tom22-and-om45
#9
Xi Wu, Lanlan Li, Hui Jiang
Mitochondria are double-membraned organelles playing essential metabolic and signaling functions. The mitochondrial proteome is under surveillance by two proteolysis systems: the ubiquitin-proteasome system degrades mitochondrial outer-membrane (MOM) proteins, and the AAA proteases maintain the proteostasis of intramitochondrial compartments. We previously identified a Doa1-Cdc48(-Ufd1-Npl4) complex that retrogradely translocates ubiquitinated MOM proteins to the cytoplasm for degradation. In this study, we report the unexpected identification of MOM proteins whose degradation requires the Yme1(-Mgr1-Mgr3)i-AAA protease complex in mitochondrial inner membrane...
November 14, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/29138248/usp1-uaf1-deubiquitinase-complex-stabilizes-tbk1-and-enhances-antiviral-responses
#10
Zhongxia Yu, Hui Song, Mutian Jia, Jintao Zhang, Wenwen Wang, Qi Li, Lining Zhang, Wei Zhao
Optimal activation of TANK-binding kinase 1 (TBK1) is crucial for initiation of innate antiviral immunity and maintenance of immune homeostasis. Although several E3 ubiquitin ligases have been reported to regulate TBK1 activation by mediating its polyubiquitination, the functions of deubiquitinase on TBK1 activity remain largely unclear. Here, we identified a deubiquitinase complex, which is formed by ubiquitin specific peptidase 1 (USP1) and USP1-associated factor 1 (UAF1), as a viral infection-induced physiological enhancer of TBK1 expression...
November 14, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29137415/ubiquitin-conjugating-enzyme-e2-l3-promoted-tumor-growth-of-nsclc-through-accelerating-p27kip1-ubiquitination-and-degradation
#11
Xingjie Ma, Junjie Zhao, Fan Yang, Haitao Liu, Weibo Qi
The molecular pathogenesis of human lung cancer has not been completely clarified. Here, we reported that UBE2L3, a member of the ubiquitin-conjugating enzymes (E2s), were overexpressed in non-small-cell lung cancer (NSCLC) tissues compared with the non-tumor tissues. High expression of UBE2L3 was correlated with advanced tumor stage and adverse outcomes. Knockdown of UBE2L3 inhibited NSCLC cell growth while ectopic expression of UBE2L3 promoted NSCLC cell growth in a cell cycle dependent manner. The results of subcutaneous tumor xenograft studies revealed that knockdown of UBE2L3 attenuated the in vivo tumor growth...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137334/the-coffee-diterpene-kahweol-enhances-sensitivity-to-sorafenib-in-human-renal-carcinoma-caki-cells-through-down-regulation-of-mcl-1-and-c-flip-expression
#12
Kyoung-Jin Min, Hee Jung Um, Jee In Kim, Taeg Kyu Kwon
Sorafenib is approved for the treatment of hepatocellular carcinoma (HCC) and advanced renal cell carcinoma (RCC). However, low tumor response and side effects have been widely reported. Therefore, to improve the efficacy of sorafenib, we investigated whether combined treatment with sorafenib and kahweol, the coffee-specific diterpene, has a synergistic effect on apoptotic cell death. Combined treatment with sorafenib and kahweol markedly induced caspase-mediated apoptosis in renal carcinoma Caki cells. Combined treatment with sorafenib and kahweol induced down-regulation of Mcl-1 and c-FLIP expression...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137325/rlim-suppresses-hepatocellular-carcinogenesis-by-up-regulating-p15-and-p21
#13
Yongsheng Huang, Meng Nie, Chuang Li, Yingjie Zhao, Jiahui Li, Lan Zhou, Lin Wang
Hepatocellular carcinogenesis results from dysregulation of oncogenes and tumor suppressors that influence cellular proliferation, differentiation and apoptosis. p15 and p21 are cyclin-dependent kinase inhibitors, which arrest cell proliferation and serve as critical tumor suppressors. Here we report that the E3 ubiquitin ligase RLIM expression is downregulated in hepatocellular carcinoma patients, and correlated with p15 and p21 expression in clinical progression. In addition, we showed that RLIM overexpression suppresses the cell growth and arrests cell cycle progression of hepatocellular carcinoma...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137287/n-myc-downstream-regulated-gene-1-promotes-apoptosis-in-colorectal-cancer-via-up-regulating-death-receptor-4
#14
Xian Zhang, Bo Feng, Fan Zhu, Chaoran Yu, Jiaoyang Lu, Meng Pan, Zirui He, Xiongzhi Wangpu, Jing Sun, Xiao Yang
The aim of this study was to evaluate the clinical significance of N-myc downstream-regulated gene 1 (NDRG1) in colorectal cancer (CRC) patients and to explore the mechanisms governing the role of NDRG1 in apoptosis of CRC cells. In the current study, we found that NDRG1 was a prognostic marker of CRC patients. Moreover, NDRG1 expression negatively correlated to tumor size and clinical TNM stage, suggesting that NDRG1 might act as a tumor suppressor by inhibiting proliferation or inducing apoptosis in CRC. Consistently, substantial apoptosis was observed in vitro and in vivo in the presence of NDRG1...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136506/a-paradoxical-tumor-suppressor-role-for-the-rac1-exchange-factor-vav1-in-t-cell-acute-lymphoblastic-leukemia
#15
Javier Robles-Valero, L Francisco Lorenzo-Martín, Mauricio Menacho-Márquez, Isabel Fernández-Pisonero, Antonio Abad, Mireia Camós, María L Toribio, Lluis Espinosa, Anna Bigas, Xosé R Bustelo
Rho guanine exchange factors (GEFs), the enzymes that stimulate Rho GTPases, are deemed as potential therapeutic targets owing to their protumorigenic functions. However, the understanding of the spectrum of their pathobiological roles in tumors is still very limited. We report here that the GEF Vav1 unexpectedly possesses tumor-suppressor functions in immature T cells. This function entails the noncatalytic nucleation of complexes between the ubiquitin ligase Cbl-b and the intracellular domain of Notch1 (ICN1) that favors ICN1 ubiquitinylation and degradation...
November 13, 2017: Cancer Cell
https://www.readbyqxmd.com/read/29136497/oncogene-stimulated-congestion-at-the-keap1-stress-signaling-hub-allows-bypass-of-nrf2-and-induction-of-nrf2-target-genes-that-promote-tumor-survival
#16
John D Hayes, Albena T Dinkova-Kostova
In this issue of Cancer Cell, Ge et al. show that overexpression of the oncoprotein iASPP in cancer cells provokes NRF2-mediated induction of cytoprotective genes, because it logjams the ubiquitin ligase substrate adaptor function of KEAP1 by virtue of the fact that it possesses a novel DLT-containing KEAP1-interaction motif.
November 13, 2017: Cancer Cell
https://www.readbyqxmd.com/read/29135455/transcriptome-wide-association-study-of-inflammatory-biologic-age
#17
Honghuang Lin, Kathryn L Lunetta, Qiang Zhao, Jian Rong, Emelia J Benjamin, Michael M Mendelson, Roby Joehanes, Daniel Levy, Martin G Larson, Joanne M Murabito
Chronic low grade inflammation is a fundamental mechanism of aging. We estimated biologic age using nine biomarkers from diverse inflammatory pathways and we hypothesized that genes associated with inflammatory biological age would provide insights into human aging. In Framingham Offspring Study participants at examination 8 (2005 to 2008), we used the Klemera-Doubal method to estimate inflammatory biologic age and we computed the difference (∆Age) between biologic age and chronologic age. Gene expression in whole blood was measured using the Affymetrix Human Exon 1...
November 11, 2017: Aging
https://www.readbyqxmd.com/read/29134486/proteasome-associated-deubiquitinases-and-cancer
#18
Arjan Mofers, Paola Pellegrini, Stig Linder, Pádraig D'Arcy
Maintenance of protein homeostasis is a crucial process for the normal functioning of the cell. The regulated degradation of proteins is primarily facilitated by the ubiquitin proteasome system (UPS), a system of selective tagging of proteins with ubiquitin followed by proteasome-mediated proteolysis. The UPS is highly dynamic consisting of both ubiquitination and deubiquitination steps that modulate protein stabilization and degradation. Deregulation of protein stability is a common feature in the development and progression of numerous cancer types...
November 14, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/29133525/optineurin-promotes-autophagosome-formation-by-recruiting-the-autophagy-related-atg12-5-16l1-complex-to-phagophores-containing-the-wipi2-protein
#19
Megha Bansal, Shivranjani C Moharir, S Purnima Sailasree, Kapil Sirohi, Cherukuri Sudhakar, D Partha Sarathi, B Jyothi Lakshmi, Mario Buono, Satish Kumar, Ghanshyam Swarup
Autophagy is a quality-control mechanism that helps to maintain cellular homeostasis by removing damaged proteins and organelles through lysosomal degradation. During autophagy, signaling events lead to the formation of a cup-shaped structure called the phagophore that matures into the autophagosome. Recruitment of the autophagy-associated Atg12-5-16L1 complex to wipi2-positive phagophores is crucial for producing LC3-II, which is required for autophagosome formation. Here, we explored the role of the autophagy receptor optineurin (Optn) in autophagosome formation...
November 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29133469/an-invisible-ubiquitin-conformation-is-required-for-efficient-phosphorylation-by-pink1
#20
Christina Gladkova, Alexander F Schubert, Jane L Wagstaff, Jonathan N Pruneda, Stefan M V Freund, David Komander
The Ser/Thr protein kinase PINK1 phosphorylates the well-folded, globular protein ubiquitin (Ub) at a relatively protected site, Ser65. We previously showed that Ser65 phosphorylation results in a conformational change in which Ub adopts a dynamic equilibrium between the known, common Ub conformation and a distinct, second conformation wherein the last β-strand is retracted to extend the Ser65 loop and shorten the C-terminal tail. We show using chemical exchange saturation transfer (CEST) nuclear magnetic resonance experiments that a similar, C-terminally retracted (Ub-CR) conformation also exists at low population in wild-type Ub...
November 13, 2017: EMBO Journal
keyword
keyword
81568
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"