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https://www.readbyqxmd.com/read/28335430/a-review-on-ubiquitination-of-neurotrophin-receptors-facts-and-perspectives
#1
REVIEW
Julia Sánchez-Sánchez, Juan Carlos Arévalo
Ubiquitination is a reversible post-translational modification involved in a plethora of different physiological functions. Among the substrates that are ubiquitinated, neurotrophin receptors (TrkA, TrkB, TrkC, and p75(NTR)) have been studied recently. TrkA is the most studied receptor in terms of its ubiquitination, and different E3 ubiquitin ligases and deubiquitinases have been implicated in its ubiquitination, whereas not much is known about the other neurotrophin receptors aside from their ubiquitination...
March 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335037/lrsam1-mediated-ubiquitylation-is-disrupted-in-axonal-charcot-marie-tooth-disease-2p
#2
Johanna E Hakonen, Vincenzo Sorrentino, Rossella Avagliano Trezza, Marit B de Wissel, Marlene van den Berg, Boris Bleijlevens, Fred van Ruissen, Ben Distel, Frank Baas, Noam Zelcer, Marian A J Weterman
Charcot-Marie-Tooth (CMT) disease type 2 is a genetically heterogeneous group of inherited neuropathies characterized by motor and sensory deficits as a result of peripheral axonal degeneration. We recently reported a frameshift mutation in the RING domain of LRSAM1 (c.2121_2122dup, p.Leu708Argfs) that encodes an E3 ubiquitin ligase, as the cause of axonal type CMT (CMT2P). However, the frequency of LRSAM1 mutations in CMT2 and the functional basis for their association with disease remains unknown. In this study we evaluated LRSAM1 mutations in two large Dutch cohorts...
March 15, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28335021/mri-visible-perivascular-space-location-is-associated-with-alzheimer-s-disease-independently-of-amyloid-burden
#3
Gargi Banerjee, Hee Jin Kim, Zoe Fox, H Rolf Jäger, Duncan Wilson, Andreas Charidimou, Han Kyu Na, Duk L Na, Sang Won Seo, David J Werring
Perivascular spaces that are visible on magnetic resonance imaging (MRI) are a neuroimaging marker of cerebral small vessel disease. Their location may relate to the type of underlying small vessel pathology: those in the white matter centrum semi-ovale have been associated with cerebral amyloid angiopathy, while those in the basal ganglia have been associated with deep perforating artery arteriolosclerosis. As cerebral amyloid angiopathy is an almost invariable pathological finding in Alzheimer's disease, we hypothesized that MRI-visible perivascular spaces in the centrum semi-ovale would be associated with a clinical diagnosis of Alzheimer's disease, whereas those in the basal ganglia would be associated with subcortical vascular cognitive impairment...
February 17, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334804/a-critical-role-of-hrd1-in-the-regulation-of-optineurin-degradation-and-aggresome-formation
#4
Jiahui Mao, Qin Xia, Chunfeng Liu, Zheng Ying, Hongfeng Wang, Guanghui Wang
Mutations in optineurin (OPTN) are associated with several human disorders including amyotrophic lateral sclerosis (ALS) and primary open-angle glaucoma (POAG). OPTN is known to be a multifunctional autophagy receptor that plays important roles in NF-κB signaling, vesicle trafficking, maintenance of the Golgi apparatus and autophagy. Given that a loss of neurons and an abnormal aggregation of disease proteins are two key features of neurodegenerative diseases, protein quality control systems are considered to be tightly associated with neurodegeneration...
March 11, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28334634/e3-ubiquitin-ligase-cbl-b-prevents-tumor-metastasis-by-maintaining-the-epithelial-phenotype-in-multiple-drug-resistant-gastric-and-breast-cancer-cells
#5
Ling Xu, Ye Zhang, Xiujuan Qu, Xiaofang Che, Tianshu Guo, Ying Cai, Aodi Li, Danni Li, Ce Li, Ti Wen, Yibo Fan, Kezuo Hou, Yanju Ma, Xuejun Hu, Yunpeng Liu
Multiple drug resistance (MDR) and metastasis are two major factors that contribute to the failure of cancer treatment. However, the relationship between MDR and metastasis has not been characterized. Additionally, the role of the E3 ubiquitin ligase Cbl-b in metastasis of MDR gastric and breast cancer is not well known. In the present study, we found that MDR gastric and breast cancer cells possess a typical mesenchymal phenotype and enhanced cell migration capacity. Additionally, Cbl-b is poorly expressed in MDR gastric and breast cancer cells...
March 20, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28333314/characterization-of-e-type-colicinogenic-plasmids-from-shigella-sonnei
#6
Fatema Calcuttawala, Chellaram Hariharan, Gururaja P Pazhani, Dhira Rani Saha, Thandavarayan Ramamurthy
Colicinogenic plasmids encode toxic proteins which have antagonistic activity against closely related bacteria. This study describes the molecular characterization of three colicinogenic plasmids designated as pSSE3, pSSE and pSSE2, each with a molecular size of ∼6 kb, identified in clinical isolates of S. sonnei. Sequence analysis revealed that pSSE and pSSE2 shared extensive sequence homology with each other and with Escherichia coli E-type colicinogenic plasmids. The plasmid pSSE3 lacked an additional gene imparting immunity to colicin E8, a unique feature not observed in any of the previously reported sequences of colicin E3 plasmids...
March 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28332273/reducing-the-incidence-of-hepatic-artery-thrombosis-in-pediatric-liver-transplantation-effect-of-microvascular-techniques-and-a-customized-anticoagulation-protocol
#7
William A Ziaziaris, Alexandre Darani, Andrew J A Holland, Angus Alexander, Jonathan Karpelowsky, Pasquale Barbaro, Michael Stormon, Edward O'Loughlin, Albert Shun, Gordon Thomas
We aimed to assess the incidence of HAT over three eras following implementation of microvascular techniques and a customized anticoagulation protocol in a predominantly cadaveric split liver transplant program. We retrospectively reviewed pediatric liver transplants performed between April 1986 and 2016 and analyzed the incidence HAT over three eras. In E1, 1986-2008, each patient received a standard dose of 5 U/kg/h of heparin and coagulation profiles normalized passively. In E2, 2008-2012, microvascular techniques were introduced...
March 22, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28330929/the-role-of-pias-sumo-e3-ligases-in-cancer
#8
REVIEW
Andrea Rabellino, Cristina Andreani, Pier Paolo Scaglioni
SUMOylation modifies the interactome, localization, activity, and lifespan of its target proteins. This process regulates several cellular machineries, including transcription, DNA damage repair, cell-cycle progression, and apoptosis. Accordingly, SUMOylation is critical in maintaining cellular homeostasis, and its deregulation leads to the corruption of a plethora of cellular processes that contribute to disease states. Among the proteins involved in SUMOylation, the protein inhibitor of activated STAT (PIAS) E3-ligases were initially described as transcriptional coregulators...
March 22, 2017: Cancer Research
https://www.readbyqxmd.com/read/28330927/e3-ubiquitin-ligase-ubr5-drives-the-growth-and-metastasis-of-triple-negative-breast-cancer
#9
Liqiu Liao, Mei Song, Xin Li, Lili Tang, Tuo Zhang, Lixing Zhang, Yihang Pan, Lotfi Chouchane, Xiaojing Ma
Patients with triple negative breast cancers (TNBC) are at high risk for recurrence and metastasis at an early time despite standard treatment, underscoring the need for novel therapeutic modalities. Here we report for the first time a distinctive and profound role of the E3 ubiquitin ligase UBR5 in the growth and metastasis of TNBC. An analysis of primary TNBC specimen by whole exon sequencing revealed strong gene amplifications of UBR5 associated with the disease. UBR5 overexpression in TNBC tissues was confirmed at mRNA and protein levels...
March 22, 2017: Cancer Research
https://www.readbyqxmd.com/read/28330622/dido-as-a-switchboard-that-regulates-self-renewal-and-differentiation-in%C3%A2-embryonic-stem-cells
#10
Agnes Fütterer, Jésus de Celis, Rosana Navajas, Luis Almonacid, Julio Gutiérrez, Amaia Talavera-Gutiérrez, Cristina Pacios-Bras, Ilenia Bernascone, Fernando Martin-Belmonte, Carlos Martinéz-A
Transition from symmetric to asymmetric cell division requires precise coordination of differential gene expression. We show that embryonic stem cells (ESCs) mainly express DIDO3 and that their differentiation after leukemia inhibitory factor withdrawal requires DIDO1 expression. C-terminal truncation of DIDO3 (Dido3ΔCT) impedes ESC differentiation while retaining self-renewal; small hairpin RNA-Dido1 ESCs have the same phenotype. Dido3ΔCT ESC differentiation is rescued by ectopic expression of DIDO3, which binds the Dido locus via H3K4me3 and RNA POL II and induces DIDO1 expression...
March 10, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28326331/effects-of-apolipoprotein-e-isoforms-in-diabetic-nephropathy-of-chinese-type-2-diabetic-patients
#11
YongWei Jiang, Liang Ma, ChengWu Han, Qian Liu, Xiao Cong, YaPing Xu, TingTing Zhao, Ping Li, YongTong Cao
Diabetic nephropathy (DN) is one of the major chronic complications of diabetes. Genetic polymorphism of Apolipoprotein E (ApoE) has been proposed to participating in DN. The purpose of the study was to evaluate the relationship between ApoE genetic polymorphism and the presence of DN in Chinese type 2 diabetic patients. We studied 845 diabetic patients who were divided into DN group (n = 429) and control group (n = 416). ApoE genotype was determined by ApoE genotyping chip and the plasmatic biochemical characterization was performed on all subjects...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28326016/early-origin-and-evolution-of-the-angelman-syndrome-ubiquitin-ligase-gene-ube3a
#12
REVIEW
Masaaki Sato
The human Ube3a gene encodes an E3 ubiquitin ligase and exhibits brain-specific genomic imprinting. Genetic abnormalities that affect the maternal copy of this gene cause the neurodevelopmental disorder Angelman syndrome (AS), which is characterized by severe mental retardation, speech impairment, seizure, ataxia and some unique behavioral phenotypes. In this review article, I highlight the evolution of the Ube3a gene and its imprinting to provide evolutionary insights into AS. Recent comparative genomic studies have revealed that Ube3a is most phylogenetically similar to HECTD2 among the human HECT (homologous to the E6AP carboxyl terminus) family of E3 ubiquitin ligases, and its distant evolutionary origin can be traced to common ancestors of fungi and animals...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28324045/ring-finger-protein-6-mediates-androgen-induced-granulosa-cell-proliferation-and-follicle-growth-via-modulation-of-androgen-receptor-signaling
#13
Jung Jin Lim, Chae Young Han, Dong Ryul Lee, Benjamin K Tsang
The destiny of the ovarian follicle (growth or atresia) is tightly regulated by actions and interactions of endocrine, paracrine and autocrine factors. Although androgens are known to be important in the regulation of folliculogenesis, whether they facilitate or suppress follicular growth has been controversial and the mechanisms involved are not fully understood. Moreover, the role and regulation of its receptor (AR) in mediating androgen signaling during follicular development is not clear. Here, we report that the active androgen dihydrotestosterone (DHT) up-regulates the expression of AR and its E3 ligase Ring Finger Protein 6 (RNF6), increasing site-specific AR polyubiquitination and AR transcriptional activity for sKit-L expression in preantral follicle growth...
January 30, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323479/evaluation-of-measles-mumps-rubella-vaccination-among-newly-arrived-refugees
#14
Deborah Lee, Michelle Weinberg, Stephen Benoit
OBJECTIVES: To assess US availability and use of measles-mumps-rubella (MMR) vaccination documentation for refugees vaccinated overseas. METHODS: We selected 1500 refugee records from 14 states from March 2013 through July 2015 to determine whether overseas vaccination records were available at the US postarrival health assessment and integrated into the Advisory Committee on Immunization Practices schedule. We assessed number of doses, dosing interval, and contraindications...
March 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28323478/disability-items-from-the-current-population-survey-2008-2015-and-permanent-versus-temporary-disability-status
#15
Bryce Ward, Andrew Myers, Jennifer Wong, Craig Ravesloot
OBJECTIVES: To examine longitudinal responses to the disability indicator questions that have been adopted as the standard across national surveys sponsored by the US Department of Health and Human Services. METHODS: Data from the Current Population Survey between 2008 and 2015 were linked to create a longitudinal sample of 721 178 individual respondents. RESULTS: Responses to the disability questions fluctuated significantly. Although 17% of all respondents reported a disability at some point, only 3% consistently reported the same set of disabilities...
March 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28323463/injury-mortality-in-individuals-with-autism
#16
Joseph Guan, Guohua Li
OBJECTIVES: To examine epidemiological patterns of injury fatalities in individuals with a diagnosis of autism. METHODS: We identified individuals with a diagnosis of autism who died between 1999 and 2014 by screening causes of death in the multiple cause-of-death data files in the National Vital Statistics System based on the International Classification of Diseases, 10th Revision, code F84.0. We used the general US population as the reference to calculate proportionate mortality ratios (PMRs) and 95% confidence intervals (CIs)...
March 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28323461/trumpcare-or-transformation
#17
David U Himmelstein, Steffie Woolhandler
Donald Trump's presidency heralds public health retreat in the short term. Yet the surging opposition to his regime-redolent of the civil rights and anti-Vietnam War mobilizations of the 1950s and 1960s-could portend better things ahead. (Am J Public Health. Published online ahead of print March 21, 2017: e1-e3. doi:10.2105/AJPH.2017.303729).
March 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28323460/supply-side-disruption-in-cocaine-production-associated-with-cocaine-related-maternal-and-child-health-outcomes-in-the-united-states
#18
Chris Delcher, Melvin Livingston, Yanning Wang, Meredith Mowitz, Mildred Maldonado-Molina, Bruce A Goldberger
OBJECTIVES: To investigate the effects of precursor chemical regulation aimed at reducing cocaine production on cocaine-related maternal and newborn hospital stays in the United States. METHODS: We analyzed monthly counts of maternal and neonatal stays from January 2002 through December 2013 by using a quasi-experimental interrupted time series design. We estimated the preregulation linear trend, postregulation change in linear trend, and abrupt change in level...
March 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28322991/thyroid-hormone-induce-a-p53-dependent-dna-damage-through-pi3k-akt-activation-in-sperm
#19
Hong Xian, Fang Wang, Wending Teng, Dong Yang, Ming Zhang
Accumulating evidences showed that thyroid hormone was participated in the functioning of the reproductive system, and an elevated level of thyroid hormones had a negative impact on reproductive system. However, the molecular basis for this observation still remains to be fully understood. Here, we show that l-Thyroxine significantly impaired human sperm motility. The molecular basis showed that thyroxine receptor stimulation triggers Phosphatidyl Inositol 3-kinase (PI3K)/Akt signaling activation leading to the E3 ligase MDM2 phosphorylation at serine 166, which directly interacted with p53 for degradation...
March 16, 2017: Gene
https://www.readbyqxmd.com/read/28322826/apc-cdh1-controls-cell-cycle-entry-during-liver-regeneration
#20
Ranran Cheng, Xin Liang, Quancheng Zhao, Zhusheng Lian, Lichun Tang, Chen Qiu, Huan Chen, Pumin Zhang
Cdh1 is one of the two adaptor proteins of anaphase-promoting complex/cyclosome (APC/C), an E3 ubiquitin ligase controlling mitosis and DNA replication. To date, the in vivo functions of Cdh1 have not been fully explored. In order to characterize Cdh1 in liver regeneration, we generated a conditional knock-out mouse model. Our data showed that loss of Cdh1 leads to increased and extended S phase progression possibly due to the upregulation of cyclin D1. Moreover, the increased DNA replication resulted in activated DNA damage response...
March 18, 2017: Experimental Cell Research
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