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https://www.readbyqxmd.com/read/28732065/direct-targets-of-pstat5-signalling-in-erythropoiesis
#1
Kevin R Gillinder, Hugh Tuckey, Charles C Bell, Graham W Magor, Stephen Huang, Melissa D Ilsley, Andrew C Perkins
Erythropoietin (EPO) acts through the dimeric erythropoietin receptor to stimulate proliferation, survival, differentiation and enucleation of erythroid progenitor cells. We undertook two complimentary approaches to find EPO-dependent pSTAT5 target genes in murine erythroid cells: RNA-seq of newly transcribed (4sU-labelled) RNA, and ChIP-seq for pSTAT5 30 minutes after EPO stimulation. We found 302 pSTAT5-occupied sites: ~15% of these reside in promoters while the rest reside within intronic enhancers or intergenic regions, some >100kb from the nearest TSS...
2017: PloS One
https://www.readbyqxmd.com/read/28730761/tumor-infiltrating-lymphocytes-as-a-prognostic-factor-in-malignant-melanoma-review-of-the-literature
#2
Vlad A Gata, Cosmin I Lisencu, Catalin I Vlad, Doina Piciu, Alexandru Irimie, Patriciu Achimas-Cadariu
Malignant melanoma represents the major cause of mortality among skin cancers, with increasing incidence and mortality rates worldwide. Despite the numerous public health campaigns and the efforts undertaken in the last decade regarding the establishment of a rapid diagnostic and an efficient treatment for these patients, the long-term prognosis has not been significantly improved. Thus, numerous studies were conducted in order to establish a more accurate prognosis, tumor infiltrating lymphocytes (TILs) being considered in many studies as independent prognostic factors of lymph node metastasis and overall survival in patients with melanoma...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28713973/a-dichloromethane-fraction-of-triticum-aestivum-sprouts-reduces-allergic-immune-response-through-inhibiting-th2-differentiation-in-ovalbumin%C3%A2-immunized-mice
#3
Hyeon-Hui Ki, Sung-Woo Hwang, Ji-Hyun Lee, Young-Ho Kim, Dae-Ki Kim, Young-Mi Lee
Triticum aestivum sprouts are small shoots that germinate from seeds and are consumed as a dietary supplement. The present study aimed to determine whether a dichloromethane fraction isolated from Triticum aestivum sprouts (TDF) suppressed the allergic immune response in ovalbumin (OVA)‑sensitized mice. In vivo experiments were performed by administering TDF or vehicle to mice during the sensitization and this was immediately followed by an intradermal injection of OVA into the ears. Splenocytes isolated from OVA‑sensitized mice were pre‑treated with TDF and re‑challenged with OVA for ex vivo evaluation...
July 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28710293/probing-gata-factor-function-in-mouse-leydig-cells-via-testicular-injection-of-adenoviral-vectors
#4
Gervette M Penny, Rebecca B Cochran, Marjut Pihlajoki, Antti Kyrönlahti, Anja Schrade, Merja Häkkinen, Jorma Toppari, Markku Heikinheimo, David B Wilson
Testicular Leydig cells produce androgens essential for proper male reproductive development and fertility. Here, we describe a new Leydig cell ablation model based on Cre/Lox recombination of mouse Gata4 and Gata6, two genes implicated in the transcriptional regulation of steroidogenesis. The testicular interstitium of adult Gata4(flox/flox);Gata6(flox/flox) mice was injected with adenoviral vectors encoding Cre + GFP (Ad-Cre-IRES-GFP) or GFP alone (Ad-GFP). The vectors efficiently and selectively transduced Leydig cells, as evidenced by GFP reporter expression...
July 14, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28700421/atypical-proliferative-borderline-serous-tumor-in-the-brain-a-case-report
#5
Deyin Xing, Erik G Jenson, Christopher A Zwick, Fausto J Rodriguez, Robert J Kurman
A 59-year-old woman with a remote history of invasive ductal carcinoma of the breast was found on a follow-up computed tomography scan of her brain to have a 1-cm lesion in the right frontal lobe in 2008. In the ensuing years, before her current admission, multiple imaging studies of the brain revealed that the lesion was stable and it was, therefore, interpreted as a small area of encephalomalacia related to a thrombosed cortical vein, a cavernoma, or treated metastatic breast cancer. In 2013, the patient underwent a bilateral salpingo-oophorectomy for ovarian tumors that were diagnosed as bilateral serous cystadenofibromas...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28698641/a-transcription-activator-like-effector-tal7-of-xanthomonas-oryzae-pv-oryzicola-activates-rice-gene-os09g29100-to-suppress-rice-immunity
#6
Lulu Cai, Yanyan Cao, Zhengyin Xu, Wenxiu Ma, Muhammad Zakria, Lifang Zou, Zaiquan Cheng, Gongyou Chen
Xanthomonas oryzae pv. oryzicola (Xoc) and X. oryzae pv. oryzae (Xoo) cause bacterial leaf streak (BLS) and bacterial leaf blight (BLB) in rice, respectively. Unlike Xoo, endogenous avirulence-resistance (avr-R) gene interactions have not been identified in the Xoc-rice pathosystem; however, both pathogens possess transcription activator-like effectors (TALEs) that are known to modulate R or S genes in rice. The transfer of individual tal genes from Xoc RS105 (hypervirulent) into Xoc YNB0-17 (hypovirulent) led to the identification of tal7, which suppressed avrXa7-Xa7 mediated defense in rice containing an Xa7 R gene...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28694801/the-gata-type-transcription-factor-csm1-regulates-conidiation-and-secondary-metabolism-in-fusarium-fujikuroi
#7
Eva-Maria Niehaus, Julia Schumacher, Immo Burkhardt, Patrick Rabe, Eduard Spitzer, Martin Münsterkötter, Ulrich Güldener, Christian M K Sieber, Jeroen S Dickschat, Bettina Tudzynski
GATA-type transcription factors (TFs) such as the nitrogen regulators AreA and AreB, or the light-responsive TFs WC-1 and WC-2, play global roles in fungal growth and development. The conserved GATA TF NsdD is known as an activator of sexual development and key repressor of conidiation in Aspergillus nidulans, and as light-regulated repressor of macroconidia formation in Botrytis cinerea. In the present study, we functionally characterized the NsdD ortholog in Fusarium fujikuroi, named Csm1. Deletion of this gene resulted in elevated microconidia formation in the wild-type (WT) and restoration of conidiation in the non-sporulating velvet mutant Δvel1 demonstrating that Csm1 also plays a role as repressor of conidiation in F...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28693610/gata3-is-a-sensitive-marker-for-primary-genital-extramammary-paget-disease-an-immunohistochemical-study-of-72-cases-with-comparison-to-gross-cystic-disease-fluid-protein-15
#8
Ming Zhao, Lixin Zhou, Li Sun, Yan Song, Yunquan Guo, Xun Zhang, Feng Zhao, Peng Wang, Junqiu Yue, Dongfeng Niu, Zhongwu Li, Xiaozheng Huang, Qiang Kang, Lin Jia, Jinping Lai, Dengfeng Cao
BACKGROUND: GATA-binding protein 3 (GATA3) has been identified as a sensitive marker for breast carcinoma but its sensitivity in primary genital extramammary Paget diseases (EMPDs) has not been well studied. METHODS: Here we investigated immunohistochemical expression of GATA3 in 72 primary genital EMPDs (35 from female, 37 from male; 45 with intraepithelial disease only, 26 with both intraepithelial disease and invasive adenocarcinoma including 14 also metastasis, 1 with metastatic adenocarcinoma only for study)...
July 10, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28690889/imbalances-in-t-cell-related-transcription-factors-among-patients-with-hashimoto-s-thyroiditis
#9
Vahid Safdari, Ebrahim Alijani, Maryam Nemati, Abdollah Jafarzadeh
OBJECTIVES: Imbalances in effector T cell functioning have been associated with a number of autoimmune diseases, including Hashimoto's thyroiditis (HT). Differentiation of effector T helper (Th) 1, Th2, Th17 and regulatory T cell (Treg) lymphocytes is regulated by transcription factors, including Th1-specific T box (T-bet), GATA binding protein-3 (GATA3), retinoid-related orphan receptor (ROR)-α and forkhead box P3 (FOXP3). This study aimed to investigate Th1/Th2, Th1/Treg, Th2/Treg and Th17/Treg balances at the level of these transcription factors...
May 2017: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/28683082/the-herbal-decoction-modified-danggui-buxue-tang-attenuates-immune-mediated-bone-marrow-failure-by-regulating-the-differentiation-of-t-lymphocytes-in-an-immune-induced-aplastic-anemia-mouse-model
#10
Peiying Deng, Xue Li, Yi Wei, Juan Liu, Meng Chen, Yamei Xu, Bin Dong, Lingqun Zhu, Limin Chai
Angelicae Sinensis, Radix Astragali and Rhizoma Coptidis are all herbs of modified Danggui Buxue Tang (DGBX) and are extensively applied herbs in traditional Chinese medicine for the treatment of anemia and inflammation. In this study, immune-induced AA mice were used as an animal model, and the immunosuppressive agent, Ciclosporin A (CsA), was used as a positive control. Multiple pro-inflammatory cytokines were examined by bead-based multiplex flow cytometry. The T-cell subsets were assessed using a fluorescence-activated cell sorter (FACS)...
2017: PloS One
https://www.readbyqxmd.com/read/28679996/transcriptional-regulation-of-erythropoiesis
#11
Tohru Fujiwara
Hematopoietic cell differentiation is regulated by various lineage-specific transcription factors. In the context of erythroid differentiation, the importance of GATA-1 has been unequivocally demonstrated by cell-based ex vivo assays, as well as knockout mouse models and rare patients with anemias. GATA-1 regulates the expression of erythroid-related genes, such as globins and genes involved in heme biosynthesis, by recognizing the DNA binding consensus sequence [(A/T) GATA (A/G)] through dual zinc finger motifs...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28676845/th2-1-hybrid-cells-occurring-in-murine-and-human-strongyloidiasis-share-effector-functions-of-th1-cells
#12
Cristin N Bock, Subash Babu, Minka Breloer, Anuradha Rajamanickam, Yukhti Boothra, Marie-Luise Brunn, Anja A Kühl, Roswitha Merle, Max Löhning, Susanne Hartmann, Sebastian Rausch
Infections by the soil-transmitted threadworm Strongyloides stercoralis affect 30-100 million people worldwide, predominantly in tropic and sub-tropic regions. Here we assessed the T helper cell phenotypes in threadworm-infected patients and experimental murine infections with focus on CD4(+) T cells co-expressing markers of Th2 and Th1 differentiation. We show that mice infected with the close relative S. ratti generate strong Th2 responses characterized by the expansion of CD4(+) GATA-3(+) cells expressing IL-4/-5/-13 in blood, spleen, gut-draining lymph nodes, lung and gut tissue...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28668505/regulation-of-allergic-airway-inflammation-by-adoptive-transfer-of-cd4-t-cells-preferentially-producing-il-10
#13
Masaya Matsuda, Kana Doi, Tatsuya Tsutsumi, Shinya Fujii, Maki Kishima, Kazuma Nishimura, Ikue Kuroda, Yu Tanahashi, Rino Yuasa, Toshihiko Kinjo, Nobuyuki Kuramoto, Nobuaki Mizutani, Takeshi Nabe
Anti-inflammatory pharmacotherapy for asthma has mainly depended on the inhalation of glucocorticoids, which non-specifically suppress immune responses. If the anti-inflammatory cytokine interleukin (IL)-10 can be induced by a specific antigen, asthmatic airway inflammation could be suppressed when individuals are exposed to the antigen. The purpose of this study was to develop cellular immunotherapeutics for atopic diseases using IL-10-producing CD4(+) T cells. Spleen cells isolated from ovalbumin (OVA)-sensitized mice were cultured with the antigen, OVA and growth factors, IL-21, IL-27 and TGF-β for 7 days...
June 29, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28662029/a-genetic-framework-controlling-the-differentiation-of-intestinal-stem-cells-during-regeneration-in-drosophila
#14
Zongzhao Zhai, Jean-Philippe Boquete, Bruno Lemaitre
The speed of stem cell differentiation has to be properly coupled with self-renewal, both under basal conditions for tissue maintenance and during regeneration for tissue repair. Using the Drosophila midgut model, we analyze at the cellular and molecular levels the differentiation program required for robust regeneration. We observe that the intestinal stem cell (ISC) and its differentiating daughter, the enteroblast (EB), form extended cell-cell contacts in regenerating intestines. The contact between progenitors is stabilized by cell adhesion molecules, and can be dynamically remodeled to elicit optimal juxtacrine Notch signaling to determine the speed of progenitor differentiation...
June 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28659711/conservation-of-repeats-at-the-mammalian-kcnq1ot1-cdkn1c-region-suggests-a-role-in-genomic-imprinting
#15
Marcos De Donato, Tanveer Hussain, Hectorina Rodulfo, Sunday O Peters, Ikhide G Imumorin, Bolaji N Thomas
KCNQ1OT1 is located in the region with the highest number of genes showing genomic imprinting, but the mechanisms controlling the genes under its influence have not been fully elucidated. Therefore, we conducted a comparative analysis of the KCNQ1/KCNQ1OT1-CDKN1C region to study its conservation across the best assembled eutherian mammalian genomes sequenced to date and analyzed potential elements that may be implicated in the control of genomic imprinting in this region. The genomic features in these regions from human, mouse, cattle, and dog show a higher number of genes and CpG islands (detected using cpgplot from EMBOSS), but lower number of repetitive elements (including short interspersed nuclear elements and long interspersed nuclear elements), compared with their whole chromosomes (detected by RepeatMasker)...
2017: Evolutionary Bioinformatics Online
https://www.readbyqxmd.com/read/28656724/mir-148a-promotes-myocardial-differentiation-of-human-bone-mesenchymal-stromal-cells-via-dna-methyltransferase-1-dnmt1
#16
Changke Jiang, Fang Gong
MicroRNAs have potential to modulate the differentiation of stem cells. In previous study, we found that miR-148a was up-regulated in myocardial differentiation of human bone mesenchymal stromal cells (hBMSCs) induced by 5'-azacytidine. However, the role of miR-148a in regulating this process still remains unclear. In this study, we investigated the function and molecular mechanism of miR-148a in myocardial differentiation of hBMSCs. We found that miR-148a was significantly increased while DNA methyltransferase 1 (DNMT1) was significantly decreased in myocardial differentiation of hBMSCs...
June 28, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28655875/proximal-gata-binding-sites-are-essential-for-human-hsd3b1-gene-transcription-in-the-placenta
#17
Tsai-Chun Lai, Hsiao-Fang Li, Yu-Shian Li, Pei-Yu Hung, Ming-Kwang Shyu, Meng-Chun Hu
The enzyme 3β-hydroxysteroid dehydrogenase/isomerase (3β-HSD) is involved in the synthesis of active steroid hormones. Two human 3β-HSD isoforms are expressed in a tissue-specific pattern. HSD3B1 (type I) expression is essential to produce progesterone for pregnancy maintenance. To understand the mechanisms of human HSD3B1 activation in the placenta, 2.2 kb of 5'-flanking sequence and 5'-deletions were fused to the luciferase reporter gene and transfected into human JEG-3 cells. The proximal -238/+337 sequence had the highest promoter activity...
June 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28637621/gata2-deficiency-and-related-myeloid-neoplasms
#18
Marcin W Wlodarski, Matthew Collin, Marshall S Horwitz
The GATA2 gene codes for a hematopoietic transcription factor that through its two zinc fingers (ZF) can occupy GATA-DNA motifs in a countless number of genes. It is crucial for the proliferation and maintenance of hematopoietic stem cells. During the past 5 years, germline heterozygous mutations in GATA2 were reported in several hundred patients with various phenotypes ranging from mild cytopenia to severe immunodeficiency involving B cells, natural killer cells, CD4(+) cells, monocytes and dendritic cells (MonoMAC/DCML), and myeloid neoplasia...
April 2017: Seminars in Hematology
https://www.readbyqxmd.com/read/28631172/glutamine-a-major-player-in-nitrogen-catabolite-repression-in-the-yeast-dekkera-bruxellensis
#19
Danielli Batista Bezerra Cajueiro, Denise Castro Parente, Fernanda Cristina Bezerra Leite, Marcos Antonio de Morais Junior, Will de Barros Pita
In the present work we studied the expression of genes from nitrogen central metabolism in the yeast Dekkera bruxellensis and under regulation by the Nitrogen Catabolite Repression mechanism (NCR). These analyses could shed some light on the biological mechanisms involved in the adaptation and survival of this yeast in the sugarcane fermentation process for ethanol production. Nitrogen sources (N-sources) in the form of ammonium, nitrate, glutamate or glutamine were investigated with or without the addition of methionine sulfoximine, which inhibits the activity of the enzyme glutamine synthetase and releases cells from NCR...
June 19, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28620129/up-regulation-of-irf-3-expression-through-gata-1-acetylation-by-histone-deacetylase-inhibitor-in-lung-adenocarcinoma-a549-cells
#20
Lu-Lu Wang, Lan-Bo Zhou, Jin Shu, Nan-Nan Li, Hui-Wen Zhang, Rui Jin, Li-Li Zhuang, Guo-Ping Zhou
Interferon regulatory factor 3 (IRF-3) is an important transcription factor for interferon genes. Although its functional activation by viral infection has been widely explicated, the regulatory mechanism of IRF-3 gene expression in cancer cells is poorly understood. In this study, we demonstrated treatment of lung adenocarcinoma A549 cells with trichostatin A (TSA) and valproic acid (VPA), two different classes of histone deacetylase inhibitors, strongly stimulated IRF-3 gene expression. Truncated and mutated IRF-3 promoter indicated that a specific GATA-1 element was responsible for TSA-induced activation of IRF-3 promoter...
June 6, 2017: Oncotarget
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