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https://www.readbyqxmd.com/read/28645775/altered-populations-of-natural-killer-cells-cytotoxic-t-lymphocytes-and-regulatory-t-cells-in-major-depressive-disorder-association-with-sleep-disturbance
#1
Hideo Suzuki, Jonathan Savitz, T Kent Teague, Siva K Gandhapudi, Chibing Tan, Masaya Misaki, Brett A McKinney, Michael R Irwin, Wayne C Drevets, Jerzy Bodurka
A subset of individuals with major depressive disorder (MDD) have impaired adaptive immunity characterized by a greater vulnerability to viral infection and a deficient response to vaccination along with a decrease in the number and/or activity of T cells and natural killer cells (NKC). Nevertheless, it remains unclear which specific subsets of lymphocytes are altered in MDD, a shortcoming we address here by utilizing an advanced fluorescence-activated cell sorting (FACS) method that allows for the differentiation of important functionally-distinct lymphocyte sub-populations...
June 20, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28645139/correction-ccr4-promotes-metastasis-via-erk-nf-%C3%AE%C2%BAb-mmp13-pathway-and-acts-downstream-of-tnf-%C3%AE-in-colorectal-cancer
#2
Baochi Ou, Jingkun Zhao, Shaopei Guan, Hao Feng, Xiongzhi Wangpu, Congcong Zhu, Yaping Zong, Junjun Ma, Jing Sun, Xiaohui Shen, Minhua Zheng, Aiguo Lu
No abstract text is available yet for this article.
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28642092/chemokine-ccl17-is-expressed-by-dendritic-cells-in-the-cns-during-experimental-autoimmune-encephalomyelitis-and-promotes-pathogenesis-of-disease
#3
Christina Ruland, Hannes Renken, Ivan Kuzmanov, Arezoo Fattahi Mehr, Kathrin Schwarte, Manuela Cerina, Alexander Herrmann, David-Marian Otte, Andreas Zimmer, Nicholas Schwab, Sven G Meuth, Volker Arolt, Luisa Klotz, Irmgard Förster, Stefanie Scheu, Judith Alferink
The CC chemokine ligand 17 (CCL17) and its cognate CC chemokine receptor 4 (CCR4) are known to control leukocyte migration, maintenance of TH17 cells, and regulatory T cell (Treg) expansion in vivo. In this study we characterized the expression and functional role of CCL17 in the pathogenesis of experimental autoimmune encephalomyelitis (EAE). Using a CCL17/EGFP reporter mouse model, we could show that CCL17 expression in the CNS can be found in a subset of classical dendritic cells (DCs) that immigrate into the CNS during the effector phase of MOG-induced EAE...
June 19, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28640357/rna-sequencing-of-esophageal-adenocarcinomas-identifies-novel-fusion-transcripts-including-npc1-melk-arising-from-a-complex-chromosomal-rearrangement
#4
Zhixiong Wang, Yulan Cheng, John M Abraham, Rong Yan, Xi Liu, Wei Chen, Sariat Ibrahim, Gary P Schroth, Xiquan Ke, Yulong He, Stephen J Meltzer
BACKGROUND: Studies of chromosomal rearrangements and fusion transcripts have elucidated mechanisms of tumorigenesis and led to targeted cancer therapies. This study was aimed at identifying novel fusion transcripts in esophageal adenocarcinoma (EAC). METHODS: To identify new fusion transcripts associated with EAC, targeted RNA sequencing and polymerase chain reaction (PCR) verification were performed in 40 EACs and matched nonmalignant specimens from the same patients...
June 22, 2017: Cancer
https://www.readbyqxmd.com/read/28638728/gene-expression-analysis-in-cutaneous-t-cell-lymphomas-ctcl-highlights-disease-heterogeneity-and-potential-diagnostic-and-prognostic-indicators
#5
Ivan V Litvinov, Michael T Tetzlaff, Philippe Thibault, Pamela Gangar, Linda Moreau, Andrew K Watters, Elena Netchiporouk, Kevin Pehr, Victor G Prieto, Elham Rahme, Nathalie Provost, Martin Gilbert, Denis Sasseville, Madeleine Duvic
Cutaneous T-Cell Lymphomas (CTCL) are rare, but potentially devastating malignancies, whose pathogenesis remains poorly elucidated. Unfortunately, currently it is not possible to predict based on the available criteria in which patients the cancer will progress and which patients will experience an indolent disease course. Furthermore, at early stages this malignancy often masquerades as psoriasis, chronic eczema or other benign inflammatory dermatoses. As a result, it takes on average 6 y to diagnose this lymphoma since its initial presentation...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28628559/the-mir-1206-microrna-variant-is-associated-with-methotrexate-induced-oral-mucositis-in-pediatric-acute-lymphoblastic-leukemia
#6
Angela Gutierrez-Camino, Natanja Oosterom, Marissa A H den Hoed, Elixabet Lopez-Lopez, Idoia Martin-Guerrero, Saskia M F Pluijm, Rob Pieters, Robert de Jonge, Wim J E Tissing, Sandra G Heil, Africa García-Orad, Marry M van den Heuvel-Eibrink
Five-year survival rates of pediatric acute lymphoblastic leukemia (ALL) have reached 90% in the developed countries. However, toxicity because of methotrexate (MTX) occurs frequently. Variety in the occurrence of toxicity is partly determined by single nucleotide polymorphisms (SNPs) in coding regions. Recently, five SNPs in non-coding pre-microRNAs and microRNA processing (miRNA) genes were identified in association with MTX-induced oral mucositis. This study aimed to replicate the association of these miRNA variants in relation to MTX-induced oral mucositis in a prospective childhood ALL cohort...
June 16, 2017: Pharmacogenetics and Genomics
https://www.readbyqxmd.com/read/28627735/genetic-alterations-in-adult-t-cell-leukemia-lymphoma
#7
REVIEW
Yasunori Kogure, Keisuke Kataoka
Adult T-cell leukemia/lymphoma (ATL) is a peripheral T-cell neoplasm with a dismal prognosis, caused by human T-cell leukemia virus type-1 (HTLV-1) retrovirus. A long latency period from HTLV-1 infection to ATL onset suggests that not only HTLV-1 proteins, such as Tax and HBZ, but also additional genetic and/or epigenetic events are required for ATL development. Although many studies have demonstrated the biological functions of viral genes, alterations of cellular genes associated with ATL have not been fully investigated...
June 19, 2017: Cancer Science
https://www.readbyqxmd.com/read/28624538/analysis-of-mrna-deadenylation-by-multi-protein-complexes
#8
Michael W Webster, James A W Stowell, Terence T L Tang, Lori A Passmore
Poly(A) tails are found at the 3' end of almost every eukaryotic mRNA and are important for the stability of mRNAs and their translation into proteins. Thus, removal of the poly(A) tail, a process called deadenylation, is critical for regulation of gene expression. Most deadenylation enzymes are components of large multi-protein complexes. Here, we describe an in vitro deadenylation assay developed to study the exonucleolytic activities of the multi-protein Ccr4-Not and Pan2-Pan3 complexes. We discuss how this assay can be used with short synthetic RNAs, as well as longer RNA substrates generated using in vitro transcription...
June 13, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28619088/chemokine-signals-are-crucial-for-enhanced-homing-and-differentiation-of-circulating-osteoclast-progenitor-cells
#9
Alan Sucur, Zrinka Jajic, Marinko Artukovic, Marina Ikic Matijasevic, Branimir Anic, Darja Flegar, Antonio Markotic, Tomislav Kelava, Sanja Ivcevic, Natasa Kovacic, Vedran Katavic, Danka Grcevic
BACKGROUND: The peripheral blood (PB) monocyte pool contains osteoclast progenitors (OCPs), which contribute to osteoresorption in inflammatory arthritides and are influenced by the cytokine and chemokine milieu. We aimed to define the importance of chemokine signals for migration and activation of OCPs in rheumatoid arthritis (RA) and psoriatic arthritis (PsA). METHODS: PB and, when applicable, synovial fluid (SF) samples were collected from 129 patients with RA, 53 patients with PsA, and 110 control patients in parallel to clinical parameters of disease activity, autoantibody levels, and applied therapy...
June 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28615693/the-ccr4-not-complex-contributes-to-repression-of-major-histocompatibility-complex-class-ii-transcription
#10
Alfonso Rodríguez-Gil, Olesja Ritter, Vera V Saul, Jochen Wilhelm, Chen-Yuan Yang, Rudolf Grosschedl, Yumiko Imai, Keiji Kuba, Michael Kracht, M Lienhard Schmitz
The multi-subunit CCR4 (carbon catabolite repressor 4)-NOT (Negative on TATA) complex serves as a central coordinator of all different steps of eukaryotic gene expression. Here we performed a systematic and comparative analysis of cells where the CCR4-NOT subunits CNOT1, CNOT2 or CNOT3 were individually downregulated using doxycycline-inducible shRNAs. Microarray experiments showed that downregulation of either CNOT subunit resulted in elevated expression of major histocompatibility complex class II (MHC II) genes which are found in a gene cluster on chromosome 6...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615072/chemokine-receptor-co-expression-reveals-aberrantly-distributed-th-effector-memory-cells-in-gpa-patients
#11
Lucas L Lintermans, Abraham Rutgers, Coen A Stegeman, Peter Heeringa, Wayel H Abdulahad
BACKGROUND: Persistent expansion of circulating CD4(+) effector memory T cells (TEM) in patients with granulomatosis with polyangiitis (GPA) suggests their fundamental role in disease pathogenesis. Recent studies have shown that distinct functional CD4(+) TEM cell subsets can be identified based on expression patterns of chemokine receptors. The current study aimed to determine different CD4(+) TEM cell subsets based on chemokine receptor expression in peripheral blood of GPA patients...
June 14, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28597329/safety-and-efficacy-of-mogamulizumab-in-patients-with-adult-t-cell-leukemia-lymphoma-in-japan-interim-results-of-postmarketing-all-case-surveillance
#12
Kenji Ishitsuka, Satoshi Yurimoto, Kouichi Kawamura, Yukie Tsuji, Manabu Iwabuchi, Takeshi Takahashi, Kensei Tobinai
We present the interim results of a postmarketing all-case surveillance study in patients with C-C chemokine receptor 4 (CCR4)-positive, relapsed or refractory adult T-cell leukemia-lymphoma (ATL) treated with the anti-CCR4 monoclonal antibody mogamulizumab since its 2012 launch in Japan. The safety and efficacy analysis populations comprised 484 and 442 patients, respectively. The ATL subtype was acute in 58.9% and lymphoma in 34.2% of patients. All patients were scheduled to receive intravenous infusions of mogamulizumab (1...
June 9, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28593508/bet-bromodomain-inhibitor-jq1-decreases-cd30-and-ccr4-expression-and-proliferation-of-cutaneous-t-cell-lymphoma-cell-lines
#13
Hiroaki Kamijo, Makoto Sugaya, Naomi Takahashi, Tomonori Oka, Tomomitsu Miyagaki, Yoshihide Asano, Shinichi Sato
Bromodomain and external domain (BET) proteins regulate cell growth, proliferation, cell cycle, and differentiation in various cancers. Therefore, they have emerged as interesting targets. The effect of BET inhibitor on cutaneous T-cell lymphoma (CTCL), however, is yet to be known. Here, we examined the effect of BET inhibitor JQ1 on four cell lines (MyLa, SeAx, Hut78 and HH cells). CTCL cell lines were treated with JQ1 and cell number, cell cycle, frequency of apoptosis, and expressions of CD25, CD30 and CCR4 on the cell surface were evaluated by flow cytometry...
June 7, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/28592758/haploidentical-transplantation-using-post-transplant-high-dose-cyclophosphamide-for-adult-t-cell-lymphoma-after-mogamulizumab-treatment
#14
Manabu Kusakabe, Naoki Kurita, Hidekazu Nishikii, Rie Sato, Chikashi Yoshida, Yasuhisa Yokoyama, Mamiko Sakata-Yanagimoto, Naoshi Obara, Yuichi Hasegawa, Shigeru Chiba
A 53-year-old man diagnosed with adult T-cell lymphoma (ATL) was treated with mLSG15 chemotherapy and achieved a first complete remission. Subsequently, a liver tumor emerged that was pathologically diagnosed as ATL (first relapse). A second remission was achieved after local irradiation and four cycles of mogamulizumab treatment. The patient received peripheral blood stem cell transplantation (HSCT) from a one haplotype HLA-mismatched daughter after total body irradiation and the administration of fludarabine as a myeloablative conditioning regimen, followed by post-transplant cyclophosphamide...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28592744/treatment-advances-and-prognosis-for-patients-with-adult-t-cell-leukemia-lymphoma
#15
Hiroo Katsuya, Kenji Ishitsuka
A classification for adult T-cell leukemia-lymphoma (ATL) based on clinical features was proposed in 1991: acute, lymphoma, chronic, and smoldering types, and their median survival times (MSTs) were reported to be 6.2, 10.2, 24.3 months, and not reached, respectively. Several new therapies for ATL have since been developed, i.e. dose-intensity multi-agent chemotherapies, allogeneic hematopoietic stem cell transplantation (allo-HSCT), monoclonal antibodies, and anti-viral therapy. The monoclonal antibody to CCR4, mogamulizumab, clearly improved response rates in patients with treatment-naïve and relapsed aggressive ATL, and has the potential to provide a survival advantage...
June 8, 2017: Journal of Clinical and Experimental Hematopathology: JCEH
https://www.readbyqxmd.com/read/28591869/alternative-splicing-of-cnot7-diversifies-ccr4-not-functions
#16
Clément Chapat, Kamel Chettab, Pierre Simonet, Peng Wang, Pierre De La Grange, Muriel Le Romancer, Laura Corbo
The CCR4-associated factor CAF1, also called CNOT7, is a catalytic subunit of the CCR4-NOT complex, which has been implicated in all aspects of the mRNA life cycle, from mRNA synthesis in the nucleus to degradation in the cytoplasm. In human cells, alternative splicing of the CNOT7 gene yields a second CNOT7 transcript leading to the formation of a shorter protein, CNOT7 variant 2 (CNOT7v2). Biochemical characterization indicates that CNOT7v2 interacts with CCR4-NOT subunits, although it does not bind to BTG proteins...
June 7, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28588606/mutations-in-the-not-genes-or-in-the-translation-machinery-similarly-display-increased-resistance-to-histidine-starvation
#17
Martine A Collart, Sari Kassem, Zoltan Villanyi
The NOT genes encode subunits of the conserved Ccr4-Not complex, a global regulator of gene expression, and in particular of mRNA metabolism. They were originally identified in a selection for increased resistance to histidine starvation in the yeast S. cerevisiae. Recent work indicated that the Not5 subunit, ortholog of mammalian CNOT3, determines global translation levels by defining binding of the Ccr4-Not scaffold protein Not1 to ribosomal mRNAs during transcription. This is needed for optimal translation of ribosomal proteins...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28576864/lin-41-and-oma-ribonucleoprotein-complexes-mediate-a-translational-repression-to-activation-switch-controlling-oocyte-meiotic-maturation-and-the-oocyte-to-embryo-transition-in-caenorhabditis-elegans
#18
Tatsuya Tsukamoto, Micah D Gearhart, Caroline A Spike, Gabriela Huelgas-Morales, Makaela Mews, Peter R Boag, Traude H Beilharz, David Greenstein
An extended meiotic prophase is a hallmark of oogenesis. Hormonal signaling activates the CDK1/cyclin B kinase to promote oocyte meiotic maturation, which involves nuclear and cytoplasmic events. Nuclear maturation encompasses nuclear envelope breakdown, meiotic spindle assembly, and chromosome segregation. Cytoplasmic maturation involves major changes in oocyte protein translation and cytoplasmic organelles and is poorly understood. In the nematode Caenorhabditis elegans, sperm release the major sperm protein (MSP) hormone to promote oocyte growth and meiotic maturation...
June 1, 2017: Genetics
https://www.readbyqxmd.com/read/28564491/abatacept-attenuates-t-follicular-helper-cell-dependent-b-cell-hyperactivity-in-primary-sj%C3%A3-gren-s-syndrome
#19
Gwenny M Verstappen, Petra M Meiners, Odilia B J Corneth, Annie Visser, Suzanne Arends, Wayel H Abdulahad, Rudi W Hendriks, Arjan Vissink, Frans G M Kroese, Hendrika Bootsma
Objective To assess the effect of abatacept (CTLA-4-Ig), which limits T-cell activation, on homeostasis of CD4(+) T-cell subsets and T-cell-dependent B-cell hyperactivity in patients with primary Sjögren's syndrome (pSS). Methods Fifteen pSS patients treated with abatacept were included. Circulating CD4(+) T-cell and B-cell subsets were analyzed by flow cytometry at baseline, on treatment and off treatment. CD4(+) effector T-cell subsets and T regulatory (Treg)-cells were identified based on expression of CD45RA, CXCR3, CCR6, CCR4, CXCR5, programmed death-1 (PD-1), inducible costimulator (ICOS) and FoxP3...
May 31, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28559491/antagonistic-actions-of-two-human-pan3-isoforms-on-global-mrna-turnover
#20
Chyi-Ying A Chen, Yueqiang Zhang, Yu Xiang, Leng Han, Ann-Bin Shyu
Deadenylation is a fundamental process that regulates eukaryotic gene expression. Mammalian deadenylation exhibits biphasic kinetics, with the Pan2-Pan3 and Ccr4-Caf1 deadenylase complexes mediating the first and second phase, respectively; however, the significance of the biphasic nature of deadenylation in mRNA turnover remains unclear. In this study, we discovered that two distinct isoforms of human Pan3 display opposing properties necessary for coordinating the two phases of deadenylation. The shorter isoform (Pan3S) interacts more strongly with PABP than the longer isoform (Pan3L) does...
May 30, 2017: RNA
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