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https://www.readbyqxmd.com/read/29482582/camks-support-development-of-acute-myeloid-leukemia
#1
Xunlei Kang, Changhao Cui, Chen Wang, Guojin Wu, Heyu Chen, Zhigang Lu, Xiaoli Chen, Li Wang, Jie Huang, Huimin Geng, Meng Zhao, Zhengshan Chen, Markus Müschen, Huan-You Wang, Cheng Cheng Zhang
BACKGROUND: We recently identified the human leukocyte immunoglobulin-like receptor B2 (LILRB2) and its mouse ortholog-paired Ig-like receptor (PirB) as receptors for several angiopoietin-like proteins (Angptls). We also demonstrated that PirB is important for the development of acute myeloid leukemia (AML), but exactly how an inhibitory receptor such as PirB can support cancer development is intriguing. RESULTS: Here, we showed that the activation of Ca (2+)/calmodulin-dependent protein kinases (CAMKs) is coupled with PirB signaling in AML cells...
February 27, 2018: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/29378731/neuronal-pirb-upregulated-in-cerebral-ischemia-acts-as-an-attractive-theranostic-target-for-ischemic-stroke
#2
Jie Wang, Ying Zhang, Jing Xia, Tingting Cai, Jiawei Du, Jinpeng Chen, Ping Li, Yuqing Shen, Aifeng Zhang, Bo Fu, Xueren Gao, Fenqin Miao, Jianqiong Zhang, Gaojun Teng
BACKGROUND: Ischemic stroke is a complex disease with multiple etiologies and clinical manifestations. Paired immunoglobulin-like receptor B (PirB), which is originally thought to function exclusively in the immune system, is now also known to be expressed by neurons. A growing number of studies indicate that PirB can inhibit neurite outgrowth and restrict neuronal plasticity. The aim of the study is to investigate whether PirB can be an attractive theranostic target for ischemic stroke...
January 29, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29338800/a-preliminary-investigation-of-pathways-to-inflated-responsibility-beliefs-in-children-with-obsessive-compulsive-disorder
#3
Lindsey M Collins, Meredith E Coles
BACKGROUND: Cognitive theorists posit that inflated responsibility beliefs contribute to the development of obsessive compulsive disorder (OCD). Salkovskis et al. (1999) proposed that experiencing heightened responsibility, overprotective parents and rigid rules, and thinking one influenced or caused a negative life event act as 'pathways' to the development of inflated responsibility beliefs, thereby increasing risk for OCD. Studies in adults with OCD and non-clinical adolescents support the link between these experiences and responsibility beliefs (Coles et al...
January 17, 2018: Behavioural and Cognitive Psychotherapy
https://www.readbyqxmd.com/read/29115495/pirb-inhibits-axonal-outgrowth-via-the-pi3k-akt-mtor-signaling-pathway
#4
Yong-Yan Bi, Yong Quan
Accumulating data strongly suggests that leukocyte immunoglobulin like receptor B1 (PirB) inhibits axonal outgrowth. However, the underlying mechanisms remain unclear. In the present study, cortical neurons of newborn mice were cultured with Nogo‑66 (Nogo‑p4; 4 µmol/l; a PirB ligand) together with NEP1‑40 (Nogo inhibitory peptide) and/or anti‑PirB body (50 mg/ml). PirB mRNA and protein was higher in cultured neurons induced by Nogo‑66 compared with untreated cells. Neurite outgrowth assays demonstrated that the inhibitory effects of Nogo‑66 on axonal outgrowth were reversed by anti‑PirB body...
January 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28676756/inhibition-of-pirb-activity-by-tat-pep-improves-mouse-motor-ability-and-cognitive-behavior
#5
Ya-Jing Mi, Hai Chen, Na Guo, Meng-Yi Sun, Zhao-Hua Zhao, Xing-Chun Gao, Xiao-Long Wang, Rui-San Zhang, Jiang-Bing Zhou, Xing-Chun Gou
Paired immunoglobulin-like receptor B (PirB), a functional receptor for myelin-associated inhibitory proteins, plays an important role in axon regeneration in injured brains. However, its role in normal brain function with age has not been previously investigated. Therefore in this study, we examined the expression level of PirB in the cerebral cortex, hippocampus and cerebellum of mice at 1 month, 3 months and 18 months of age. The results showed that the expression of PirB increased with age. We further demonstrated that overexpression of PirB inhibited neurite outgrowth in PC12 cells, and this inhibitory activity of PirB could be reversed by TAT-PEP, which is a recombinant soluble PirB ectodomain fused with TAT domain for blood-brain barrier penetration...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28669876/changes-in-expressions-of-major-histocompatibility-complex-class-i-paired-immunoglobulin-like-receptor-b-and-cluster-of-differentiation-3%C3%AE-in-motor-cortical-representations-of-the-brachial-plexus-after-avulsion-in-rats
#6
Jie Zhang, Liang Chen, Yu-Dong Gu
OBJECTIVE: Major histocompatibility complex class I (MHCI), paired-immunoglobulin-like receptor B (PirB), and cluster of differentiation 3ζ (CD3ζ) negatively regulate neuronal plasticity in developing and adult brains. The aim of this study was to evaluate expressive changes of these factors in motor cortical representations of the brachial plexus (MCRBP) after total brachial plexus root avulsion (tBPRA). METHODS: A total of 45 rats were randomly and equally divided into 3 groups for evaluating mRNA and protein expression levels of MHCI, PirB, and CD3ζ: 7 days, 3 months, and control...
October 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28638976/lilrb-receptor-mediated-regulation-of-myeloid-cell-maturation-and-function
#7
REVIEW
William van der Touw, Hui-Ming Chen, Ping-Ying Pan, Shu-Hsia Chen
The leukocyte immunoglobulin-like receptor (LILR) family comprises a set of paired immunomodulatory receptors expressed among human myeloid and lymphocyte cell populations. While six members of LILR subfamily A (LILRA) associate with membrane adaptors to signal via immunoreceptor tyrosine-based activating motifs (ITAM), LILR subfamily B (LILRB) members signal via multiple cytoplasmic immunoreceptor tyrosine-based inhibitory motifs (ITIM). Ligand specificity of some LILR family members has been studied in detail, but new perspective into the immunoregulatory aspects of this receptor family in human myeloid cells has been limited...
August 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28594961/pirb-regulates-asymmetries-in-hippocampal-circuitry
#8
Hikari Ukai, Aiko Kawahara, Keiko Hirayama, Matthew Julian Case, Shotaro Aino, Masahiro Miyabe, Ken Wakita, Ryohei Oogi, Michiyo Kasayuki, Shihomi Kawashima, Shunichi Sugimoto, Kanako Chikamatsu, Noritaka Nitta, Tsuneyuki Koga, Ryuichi Shigemoto, Toshiyuki Takai, Isao Ito
Left-right asymmetry is a fundamental feature of higher-order brain structure; however, the molecular basis of brain asymmetry remains unclear. We recently identified structural and functional asymmetries in mouse hippocampal circuitry that result from the asymmetrical distribution of two distinct populations of pyramidal cell synapses that differ in the density of the NMDA receptor subunit GluRε2 (also known as NR2B, GRIN2B or GluN2B). By examining the synaptic distribution of ε2 subunits, we previously found that β2-microglobulin-deficient mice, which lack cell surface expression of the vast majority of major histocompatibility complex class I (MHCI) proteins, do not exhibit circuit asymmetry...
2017: PloS One
https://www.readbyqxmd.com/read/28441398/the-effects-of-immune-protein-cd3%C3%AE-development-and-degeneration-of-retinal-neurons-after-optic-nerve-injury
#9
Tao He, Xavier Mortensen, Ping Wang, Ning Tian
Major histocompatibility complex (MHC) class I molecules and their receptors play fundamental roles in neuronal death during diseases. T-cell receptors (TCR) function as MHCI receptor on T-cells and both MHCI and a key component of TCR, CD3ζ, are expressed by mouse retinal ganglion cells (RGCs) and displaced amacrine cells. Mutation of these molecules compromises the development of RGCs. We investigated whether CD3ζ regulates the development and degeneration of amacrine cells after RGC death. Surprisingly, mutation of CD3ζ not only impairs the proper development of amacrine cells expressing CD3ζ but also those not expressing CD3ζ...
2017: PloS One
https://www.readbyqxmd.com/read/28438456/pirab-protein-from-xenorhabdus-nematophila-hb310-exhibits-a-binary-toxin-with-insecticidal-activity-and-cytotoxicity-in-galleria-mellonella
#10
Qing Yang, Jie Zhang, Tianhui Li, Shen Liu, Ping Song, Ziyan Nangong, Qinying Wang
PirAB (Photorhabdus insect-related proteins, PirAB) toxin was initially found in the Photorhabdus luminescens TT01 strain and has been shown to be a binary toxin with high insecticidal activity. Based on GenBank data, this gene was also found in the Xenorhabdus nematophila genome sequence. The predicted amino acid sequence of pirA and pirB in the genome of X. nematophila showed 51% and 50% identity with those gene sequences from P. luminescens. The purpose of this experiment is to identify the relevant information for this toxin gene in X...
September 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28432099/acute-hepatopancreatic-necrosis-disease-causing-vibrio-parahaemolyticus-strains-maintain-an-antibacterial-type-vi-secretion-system-with-versatile-effector-repertoires
#11
Peng Li, Lisa N Kinch, Ann Ray, Ankur B Dalia, Qian Cong, Linda M Nunan, Andrew Camilli, Nick V Grishin, Dor Salomon, Kim Orth
Acute hepatopancreatic necrosis disease (AHPND) is a newly emerging shrimp disease that has severely damaged the global shrimp industry. AHPND is caused by toxic strains of Vibrio parahaemolyticus that have acquired a "selfish plasmid" encoding the deadly binary toxins PirAvp /PirBvp To better understand the repertoire of virulence factors in AHPND-causing V. parahaemolyticus , we conducted a comparative analysis using the genome sequences of the clinical strain RIMD2210633 and of environmental non-AHPND and toxic AHPND isolates of V...
July 1, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28404482/plasmid-dynamics-in-vibrio-parahaemolyticus-strains-related-to-shrimp-acute-hepatopancreatic-necrosis-syndrome-ahpns
#12
Chonchanok Theethakaew, Shota Nakamura, Daisuke Motooka, Shigeaki Matsuda, Toshio Kodama, Kaknokrat Chonsin, Orasa Suthienkul, Tetsuya Iida
Vibrio parahaemolyticus is a causative agent of acute hapatopancreatic necrosis syndrome (AHPNS) which causes early mortality in white shrimp. Emergence of AHPNS has caused tremendous economic loss for aquaculture industry particularly in Asia since 2010. Previous studies reported that strains causing AHPNS harbor a 69-kb plasmid with possession of virulence genes, pirA and pirB. However, genetic variation of the 69-kb plasmid among AHPNS related strains has not been investigated. This study aimed to analyze genetic composition and diversity of the 69-kb plasmid in strains isolated from shrimps affected by AHPNS...
July 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28315758/tat-pep-a-novel-blocker-of-pirb-enhances-the-recovery-of-cognitive-function-in-mice-after-transient-global-cerebral-ischemia
#13
Liya Li, Bin Deng, Shuang Li, Zhaoyu Liu, Tao Jiang, Zhaoyang Xiao, Qiang Wang
Neuronal damage and axonal regeneration inhibition are the main reasons to poor functional recovery after ischemia. Nogo-A signals inhibit axon outgrowth through the PirB receptor after ischemic reperfusion injury in central nervous system. We use TAT-PEP, a novel protein which could pass through the blood brain barrier, to block the function of PirB and identify the long-term neurological and behavioral recovery after bilateral common carotid artery occlusion (BCCAO) in mice. We observed that TAT-PEP promoted neuron survival and inhibited neuronal apoptosis...
March 16, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/27987133/tat-pep-enhanced-neurobehavioral-functional-recovery-by-facilitating-axonal-regeneration-and-corticospinal-tract-projection-after-stroke
#14
Bin Deng, Liya Li, Xingchun Gou, Hao Xu, Zhaohua Zhao, Qiang Wang, Lixian Xu
Paired immunoglobulin-like receptor B (PirB) has been identified as a new receptor for myelin-associated inhibitory (MAI) proteins, which may play important role in axonal regeneration and corticospinal tract (CST) projection associated with neurobehavioral function recovery after stroke. Here, we found that the expression of PirB was increased in the cortical penumbra from 1 to 28 days after transient focal cerebral ischemic reperfusion of rats. Then, transactivator of transcription-PirB extracellular peptide (TAT-PEP) was generated that might block the interactions between MAIs and PirB...
December 16, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27966582/electroacupuncture-enhances-rehabilitation-through-mir-181b-targeting-pirb-after-ischemic-stroke
#15
Bin Deng, Fuhai Bai, Heng Zhou, Dandan Zhou, Zhi Ma, Lize Xiong, Qiang Wang
Recent studies have demonstrated microRNAs (miRNAs) and proteins are beneficial to axon regeneration, which may be involved in Electroacupuncture (EA) therapy against stroke. In this study, we aimed to determine the pivotal role of PirB in EA-produced rehabilitation against ischemic stroke; and to screen and investigate the potential miRNAs directly regulating PirB expression. The results showed EA treatment enhanced axon regeneration and new projections from the corticospinal tract at 28 d after cerebral ischemic reperfusion injury of rats...
December 14, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27823982/angptl8-reverses-established-adriamycin-cardiomyopathy-by-stimulating-adult-cardiac-progenitor-cells
#16
Shuyuan Chen, Jiaxi Chen, Xing-Li Meng, Jin-Song Shen, Jing Huang, Pintong Huang, Zhaoxia Pu, Nathan H McNeill, Paul A Grayburn
Established adriamycin cardiomyopathy is a lethal disease. When congestive heart failure develops, mortality is approximately 50% in a year. It has been known that ANGPTLs has various functions in lipid metabolism, inflammation, cancer cell invasion, hematopoietic stem activity and diabetes. We hypothesized that ANGPTL8 is capable of maintaining heart function by stimulating adult cardiac progenitor cells to initiate myocardial regeneration. We employed UTMD to deliver piggybac transposon plasmids with the human ANGPTL8 gene to the liver of rats with adriamycin cardiomyopathy...
December 6, 2016: Oncotarget
https://www.readbyqxmd.com/read/27752542/cell-autonomous-regulation-of-dendritic-spine-density-by-pirb
#17
George S Vidal, Maja Djurisic, Kiana Brown, Richard W Sapp, Carla J Shatz
Synapse density on cortical pyramidal neurons is modulated by experience. This process is highest during developmental critical periods, when mechanisms of synaptic plasticity are fully engaged. In mouse visual cortex, the critical period for ocular dominance (OD) plasticity coincides with the developmental pruning of synapses. At this time, mice lacking paired Ig-like receptor B (PirB) have excess numbers of dendritic spines on L5 neurons; these spines persist and are thought to underlie the juvenile-like OD plasticity observed in adulthood...
September 2016: ENeuro
https://www.readbyqxmd.com/read/27749928/correction-mhc-i-and-pirb-upregulation-in-the-central-and-peripheral-nervous-system-following-sciatic-nerve-injury
#18
André Luis Bombeiro, Rodolfo Thomé, Sérgio Luiz Oliveira Nunes, Bárbara Monteiro Moreira, Liana Verinaud, Alexandre Leite Rodrigues de Oliveira
[This corrects the article DOI: 10.1371/journal.pone.0161463.].
2016: PloS One
https://www.readbyqxmd.com/read/27637803/activation-of-lilrb2-signal-pathway-in-temporal-lobe-epilepsy-patients-and-in-a-pilocarpine-induced-epilepsy-model
#19
Jiong Yue, Wei Li, Chao Liang, Bing Chen, Xin Chen, Lukang Wang, Zhenle Zang, Sixun Yu, Shiyong Liu, Song Li, Hui Yang
Temporal lobe epilepsy (TLE) is a frequent form of focal intractable epilepsy in adults, but the specific mechanism underlying the epileptogenesis of TLE is still unknown. Human leukocyte immunoglobulin-like receptor B2 (LILRB2) (the murine homolog gene called paired immunoglobulin-like receptor B, or PirB), participates in the process of synaptic plasticity and neurite growth in the central nervous system (CNS), suggesting a potential role of LILRB2 in epilepsy. However, the expression pattern of LILRB2 and the downstream molecular signal in intractable TLE remains poorly understood...
November 2016: Experimental Neurology
https://www.readbyqxmd.com/read/27570736/draft-genome-sequence-of-pathogenic-bacteria-vibrio-parahaemolyticus-strain-ba94c2-associated-with-acute-hepatopancreatic-necrosis-disease-isolate-from-south-america
#20
Leda Restrepo, Bonny Bayot, Irma Betancourt, Andres Pinzón
Vibrio parahaemolyticus is a pathogenic bacteria which has been associated to the early mortality syndrome (EMS) also known as hepatopancreatic necrosis disease (AHPND) causing high mortality in shrimp farms. Pathogenic strains contain two homologous genes related to insecticidal toxin genes, PirA and PirB, these toxin genes are located on a plasmid contained within the bacteria. Genomic sequences have allowed the finding of two strains with a divergent structure related to the geographic region from where they were found...
September 2016: Genomics Data
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