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https://www.readbyqxmd.com/read/28615725/transcriptome-analysis-reveals-similarities-between-human-blood-cd3-cd56-bright-cells-and-mouse-cd127-innate-lymphoid-cells
#1
David S J Allan, Ana Sofia Cerdeira, Anuisa Ranjan, Christina L Kirkham, Oscar A Aguilar, Miho Tanaka, Richard W Childs, Cynthia E Dunbar, Jack L Strominger, Hernan D Kopcow, James R Carlyle
For many years, human peripheral blood natural killer (NK) cells have been divided into functionally distinct CD3(-) CD56(bright) CD16(-) and CD3(-) CD56(dim) CD16(+) subsets. Recently, several groups of innate lymphoid cells (ILC), distinct from NK cells in development and function, have been defined in mouse. A signature of genes present in mouse ILC except NK cells, defined by Immunological Genome Project studies, is significantly over-represented in human CD56(bright) cells, by gene set enrichment analysis...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28520732/differential-gene-expression-along-the-animal-vegetal-axis-in-the-ascidian-embryo-is-maintained-by-a-dual-functional-protein-foxd
#2
Shin-Ichi Tokuhiro, Miki Tokuoka, Kenji Kobayashi, Atsushi Kubo, Izumi Oda-Ishii, Yutaka Satou
In many animal embryos, a specific gene expression pattern is established along the animal-vegetal axis soon after zygotic transcription begins. In the embryo of the ascidian Ciona intestinalis, soon after the division that separates animal and vegetal hemispheres into distinct blastomeres, maternal Gata.a and β-catenin activate specific genes in the animal and vegetal blastomeres, respectively. On the basis of these initial distinct gene expression patterns, gene regulatory networks promote animal cells to become ectodermal tissues and vegetal cells to become endomesodermal tissues and a part of the nerve cord...
May 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28515293/virus-like-vesicles-of-kaposi-s-sarcoma-associated-herpesvirus-activate-lytic-replication-through-triggering-differentiation-signaling
#3
Danyang Gong, Xinghong Dai, Yuchen Xiao, Yushen Du, Travis J Chapa, Jeffrey R Johnson, Xinmin Li, Nevan J Krogan, Hongyu Deng, Ting-Ting Wu, Ren Sun
Virus-like vesicles (VLVs) are membrane enclosed vesicles that resemble native enveloped viruses in organization, but lack viral capsid and genome. During the productive infection of tumor associated gamma-herpesviruses, both virions and VLVs are produced and released into the extracellular space. However, studies of gamma-herpesvirus associated VLVs have been largely restricted by the technical difficulty of separating VLVs from mature virions. Here, we report a strategy of using a Kaposi's sarcoma-associated herpesvirus (KSHV) mutant defective in small capsid protein, unable to produce mature virions, to selectively isolate VLVs...
May 17, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28506291/targeting-cd22-with-the-monoclonal-antibody-epratuzumab-modulates-human-b-cell-maturation-and-cytokine-production-in-response-to-toll-like-receptor-7-tlr7-and-b-cell-receptor-bcr-signaling
#4
Natalia V Giltiay, Geraldine L Shu, Anthony Shock, Edward A Clark
BACKGROUND: Abnormal B-cell activation is implicated in the pathogenesis of autoimmune diseases, including systemic lupus erythematosus (SLE). The B-cell surface molecule CD22, which regulates activation through the B-cell receptor (BCR), is a potential target for inhibiting pathogenic B cells; however, the regulatory functions of CD22 remain poorly understood. In this study, we determined how targeting of CD22 with epratuzumab (Emab), a humanized anti-CD22 IgG1 monoclonal antibody, affects the activation of human B-cell subsets in response to Toll-like receptor 7 (TLR7) and BCR engagement...
May 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28479318/identification-of-somatic-mutations-in-primary-cutaneous-diffuse-large-b-cell-lymphoma-leg-type-by-massive-parallel-sequencing
#5
Sylvain Mareschal, Anne Pham-Ledard, Pierre Julien Viailly, Sydney Dubois, Philippe Bertrand, Catherine Maingonnat, Maxime Fontanilles, Elodie Bohers, Philippe Ruminy, Isabelle Tournier, Philippe Courville, Bernard Lenormand, Anne Bénédicte Duval, Emilie Andrieu, Laurence Verneuil, Beatrice Vergier, Hervé Tilly, Pascal Joly, Thierry Frebourg, Marie Beylot-Barry, Jean-Philippe Merlio, Fabrice Jardin
To determine whether the mutational profile of primary cutaneous diffuse large B-cell lymphoma leg-type (PCLBCL-LT) is unique by comparison with other diffuse large B-cell lymphoma (DLBCL) subtypes, we analyzed a total cohort of 28 PCLBCL-LT cases by next generation sequencing with a Lymphopanel designed for DLBCL. We also analyzed 12 pairs of tumor and control DNA samples by whole exome sequencing which led us to perform resequencing of three selected genes not included in the Lymphopanel: TBL1XR1, KLHL6 and IKZF3...
May 4, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28468592/whole-transcriptome-analysis-reveals-dysregulated-oncogenic-lncrnas-in-natural-killer-t-cell-lymphoma-and-establishes-mir155hg-as-a-target-of-prdm1
#6
Esra Baytak, Qiang Gong, Burcu Akman, Hongling Yuan, Wing C Chan, Can Küçük
Natural killer/T-cell lymphoma is a rare but aggressive neoplasm with poor prognosis. Despite previous reports that showed potential tumor suppressors, such as PRDM1 or oncogenes associated with the etiology of this malignancy, the role of long non-coding RNAs in natural killer/T-cell lymphoma pathobiology has not been addressed to date. Here, we aim to identify cancer-associated dysregulated long non-coding RNAs and signaling pathways or biological processes associated with these long non-coding RNAs in natural killer/T-cell lymphoma cases and to identify the long non-coding RNAs transcriptionally regulated by PRDM1...
May 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28459970/global-mirna-expression-analysis-identifies-novel-key-regulators-of-plasma-cell-differentiation-and-malignant-plasma-cell
#7
Alboukadel Kassambara, Michel Jourdan, Angélique Bruyer, Nicolas Robert, Véronique Pantesco, Olivier Elemento, Bernard Klein, Jérôme Moreaux
MicroRNAs (miRNAs) are small noncoding RNAs that attenuate expression of their mRNA targets. Here, we developed a new method and an R package, to easily infer candidate miRNA-mRNA target interactions that could be functional during a given biological process. Using this method, we described, for the first time, a comprehensive integrated analysis of miRNAs and mRNAs during human normal plasma cell differentiation (PCD). Our results reveal 63 miRNAs with significant temporal changes in their expression during normal PCD...
June 2, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28439269/genome-wide-identification-of-target-genes-for-the-key-b-cell-transcription-factor-ets1
#8
Prontip Saelee, Alyssa Kearly, Stephen L Nutt, Lee Ann Garrett-Sinha
BACKGROUND: The transcription factor Ets1 is highly expressed in B lymphocytes. Loss of Ets1 leads to premature B cell differentiation into antibody-secreting cells (ASCs), secretion of autoantibodies, and development of autoimmune disease. Despite the importance of Ets1 in B cell biology, few Ets1 target genes are known in these cells. RESULTS: To obtain a more complete picture of the function of Ets1 in regulating B cell differentiation, we performed Ets1 ChIP-seq in primary mouse B cells to identify >10,000-binding sites, many of which were localized near genes that play important roles in B cell activation and differentiation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28378641/downregulation-of-prdm1-promotes-cellular-invasion-and-lung-cancer-metastasis
#9
Zhiyan Zhu, Hao Wang, Yiliang Wei, Fanrong Meng, Zhe Liu, Zhenfa Zhang
The zinc-finger transcription factor PRDM1 (PR domain containing 1) plays key roles in the development of malignant lymphoma, leukaemia and some non-haematopoietic cancers, including breast cancer, colorectal cancer and glioma. However, little is known regarding the function of PRDM1 in the progression of lung cancer. Here, we found that PRDM1 is expressed in normal human lung epithelium but is downregulated in lung cancer cells. Decreased expression of PRDM1 correlates with poor prognosis in lung cancer. Depletion of PRDM1 in lung cancer cells promotes cellular invasion and anoikis resistance in vitro and lung metastasis in vivo...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28322735/stella-collaborates-in-distinct-mesendodermal-cell-subpopulations-at-the-fetal-placental-interface-in-the-mouse-gastrula
#10
Adam D Wolfe, Adriana M Rodriguez, Karen M Downs
The allantois-derived umbilical component of the chorio-allantoic placenta shuttles fetal blood to and from the chorion, thereby ensuring fetal-maternal exchange. The progenitor populations that establish and supply the fetal-umbilical interface lie, in part, within the base of the allantois, where the germ line is claimed to segregate from the soma. Results of recent studies in the mouse have reported that STELLA (DPPA-3, PGC7) co-localizes with PRDM1 (BLIMP1), the bimolecular signature of putative primordial germ cells (PGCs) throughout the fetal-placental interface...
May 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28314753/transethnic-meta-analysis-identifies-gsdma-and-prdm1-as-susceptibility-genes-to-systemic-sclerosis
#11
Chikashi Terao, Takahisa Kawaguchi, Philippe Dieude, John Varga, Masataka Kuwana, Marie Hudson, Yasushi Kawaguchi, Marco Matucci-Cerinic, Koichiro Ohmura, Gabriela Riemekasten, Aya Kawasaki, Paolo Airo, Tetsuya Horita, Akira Oka, Eric Hachulla, Hajime Yoshifuji, Paola Caramaschi, Nicolas Hunzelmann, Murray Baron, Tatsuya Atsumi, Paul Hassoun, Takeshi Torii, Meiko Takahashi, Yasuharu Tabara, Masakazu Shimizu, Akiko Tochimoto, Naho Ayuzawa, Hidetoshi Yanagida, Hiroshi Furukawa, Shigeto Tohma, Minoru Hasegawa, Manabu Fujimoto, Osamu Ishikawa, Toshiyuki Yamamoto, Daisuke Goto, Yoshihide Asano, Masatoshi Jinnin, Hirahito Endo, Hiroki Takahashi, Kazuhiko Takehara, Shinichi Sato, Hironobu Ihn, Soumya Raychaudhuri, Katherine Liao, Peter Gregersen, Naoyuki Tsuchiya, Valeria Riccieri, Inga Melchers, Gabriele Valentini, Anne Cauvet, Maria Martinez, Tsuneyo Mimori, Fumihiko Matsuda, Yannick Allanore
OBJECTIVES: Systemic sclerosis (SSc) is an autoimmune disease characterised by skin and systemic fibrosis culminating in organ damage. Previous genetic studies including genome-wide association studies (GWAS) have identified 12 susceptibility loci satisfying genome-wide significance. Transethnic meta-analyses have successfully expanded the list of susceptibility genes and deepened biological insights for other autoimmune diseases. METHODS: We performed transethnic meta-analysis of GWAS in the Japanese and European populations, followed by a two-staged replication study comprising a total of 4436 cases and 14 751 controls...
June 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28288836/temporal-profiling-of-photoreceptor-lineage-gene-expression-during-murine-retinal-development
#12
Tooka Aavani, Nobuhiko Tachibana, Valerie Wallace, Jeffrey Biernaskie, Carol Schuurmans
Rod and cone photoreceptors are photosensitive cells in the retina that convert light to electrical signals that are transmitted to visual processing centres in the brain. During development, cones and rods are generated from a common pool of multipotent retinal progenitor cells (RPCs) that also give rise to other retinal cell types. Cones and rods differentiate in two distinct waves, peaking in mid-embryogenesis and the early postnatal period, respectively. As RPCs transition from making cones to generating rods, there are changes in the expression profiles of genes involved in photoreceptor cell fate specification and differentiation...
January 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28199486/gsg1-trnp1-and-tmem215-mark-subpopulations-of-bipolar-interneurons-in-the-mouse-retina
#13
Ko Uoon Park, Grace Randazzo, Kenneth L Jones, Joseph A Brzezinski
Purpose: How retinal bipolar cell interneurons are specified and assigned to specialized subtypes is only partially understood. In part, this is due to a lack of early pan- and subtype-specific bipolar cell markers. To discover these factors, we identified genes that were upregulated in Blimp1 (Prdm1) mutant retinas, which exhibit precocious bipolar cell development. Methods: Postnatal day (P)2 retinas from Blimp1 conditional knock-out (CKO) mice and controls were processed for RNA sequencing...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28097234/kruppel-like-factor4-regulates-prdm1-expression-through-binding-to-an-autoimmune-risk-allele
#14
Su Hwa Jang, Helen Chen, Peter K Gregersen, Betty Diamond, Sun Jung Kim
A SNP identified as rs548234, which is found in PRDM1, the gene that encodes BLIMP1, is a risk allele associated with systemic lupus erythematosus (SLE). BLIMP1 expression was reported to be decreased in women with the PRDM1 rs548234 risk allele compared with women with the nonrisk allele in monocyte-derived DCs (MO-DCs). In this study, we demonstrate that BLIMP1 expression is regulated by the binding of Kruppel-like factor 4 (KLF4) to the risk SNP. KLF4 is highly expressed in MO-DCs but undetectable in B cells, consistent with the lack of altered expression of BLIMP1 in B cells from risk SNP carriers...
January 12, 2017: JCI Insight
https://www.readbyqxmd.com/read/28056297/-potential-mechanism-and-prognostic-value-of-promoter-methylation-of-prdm1-gene-in-diffuse-large-b-cell-lymphoma
#15
X Y Zhang, Z P Ma, W L Cui, R Chen, Abulajiang Glinaer, N Miao, X X Li
Objective: To investigate PRDM1 gene methylation status, immune classification and their prognostic significance in diffuse large B cell lymphoma (DLBCL). Methods: Immunohistochemical (IHC) staining for CD20, CD10, bcl-2, bcl-6, PRDM1/Blimp-1 and MUM1 was carried out in 100 cases of DLBCL specimens and 20 reactive lymphoid proliferation samples. All patients were classified into germinal center B cell-like (GCB) and activated B cell-like (ABC) subtype according to Hans' algorithmin. PRDM1 gene methylation was detected by methylation-specific PCR (MSP) and its relationship with clinicopathologic parameters was analyzed...
December 8, 2016: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28052011/ezh2-inhibition-in-multiple-myeloma-downregulates-myeloma-associated-oncogenes-and-upregulates-micrornas-with-potential-tumor-suppressor-functions
#16
Mohammad Alzrigat, Alba Atienza Párraga, Prasoon Agarwal, Hadil Zureigat, Anders Österborg, Hareth Nahi, Anqi Ma, Jian Jin, Kenneth Nilsson, Fredrik Öberg, Antonia Kalushkova, Helena Jernberg-Wiklund
Multiple Myeloma (MM) is a plasma cell tumor localized to the bone marrow (BM). Despite the fact that current treatment strategies have improved patients' median survival time, MM remains incurable. Epigenetic aberrations are emerging as important players in tumorigenesis making them attractive targets for therapy in cancer including MM. Recently, we suggested the polycomb repressive complex 2 (PRC2) as a common denominator of gene silencing in MM and presented the PRC2 enzymatic subunit enhancer of zeste homolog 2 (EZH2) as a potential therapeutic target in MM...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28012163/il-10-production-in-murine-igm-cd138-hi-cells-is-driven-by-blimp-1-and-downregulated-in-class-switched-cells
#17
Nao Suzuki-Yamazaki, Rieko Yanobu-Takanashi, Tadashi Okamura, Satoshi Takaki
In contrast to antibody-induced inflammatory responses, some B-cell subpopulations suppress inflammation through the production of interleukin (IL)-10. However, the mechanisms underlying Il10 gene expression during B-cell development is elusive. Here, we identify IgM(+) B220(lo) CD138(hi) cells responsible for marked IL-10 production in the bone marrow and spleen of mice. These murine IL-10-producing cells predominantly secrete IgM and have unique characteristics of long-lived plasma cells in spite of high expression of surface IgM...
December 23, 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27941793/fasting-selectively-blocks-development-of-acute-lymphoblastic-leukemia-via-leptin-receptor-upregulation
#18
Zhigang Lu, Jingjing Xie, Guojin Wu, Jinhui Shen, Robert Collins, Weina Chen, Xunlei Kang, Min Luo, Yizhou Zou, Lily Jun-Shen Huang, James F Amatruda, Tamra Slone, Naomi Winick, Philipp E Scherer, Cheng Cheng Zhang
New therapeutic approaches are needed to treat leukemia effectively. Dietary restriction regimens, including fasting, have been considered for the prevention and treatment of certain solid tumor types. However, whether and how dietary restriction affects hematopoietic malignancies is unknown. Here we report that fasting alone robustly inhibits the initiation and reverses the leukemic progression of both B cell and T cell acute lymphoblastic leukemia (B-ALL and T-ALL, respectively), but not acute myeloid leukemia (AML), in mouse models of these tumors...
January 2017: Nature Medicine
https://www.readbyqxmd.com/read/27888196/differential-temporal-control-of-foxa-a-and-zic-r-b-specifies-brain-versus-notochord-fate-in-the-ascidian-embryo
#19
Tatsuro Ikeda, Yutaka Satou
In embryos of an invertebrate chordate, Ciona intestinalis, two transcription factors, Foxa.a and Zic-r.b, are required for specification of the brain and the notochord, which are derived from distinct cell lineages. In the brain lineage, Foxa.a and Zic-r.b are expressed with no temporal overlap. In the notochord lineage, Foxa.a and Zic-r.b are expressed simultaneously. In the present study, we found that the temporally non-overlapping expression of Foxa.a and Zic-r.b in the brain lineage was regulated by three repressors, Prdm1-r...
November 25, 2016: Development
https://www.readbyqxmd.com/read/27866912/investigation-of-candidate-genes-for-osteoarthritis-based-on-gene-expression-profiles
#20
Shuanghai Dong, Tian Xia, Lei Wang, Qinghua Zhao, Jiwei Tian
OBJECTIVE: To explore the mechanism of osteoarthritis (OA) and provide valid biological information for further investigation. METHODS: Gene expression profile of GSE46750 was downloaded from Gene Expression Omnibus database. The Linear Models for Microarray Data (limma) package (Bioconductor project, http://www.bioconductor.org/packages/release/bioc/html/limma.html) was used to identify differentially expressed genes (DEGs) in inflamed OA samples. Gene Ontology function enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways enrichment analysis of DEGs were performed based on Database for Annotation, Visualization and Integrated Discovery data, and protein-protein interaction (PPI) network was constructed based on the Search Tool for the Retrieval of Interacting Genes/Proteins database...
December 2016: Acta Orthopaedica et Traumatologica Turcica
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