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https://www.readbyqxmd.com/read/28108952/transcriptional-regulators-dictate-innate-lymphoid-cell-fates
#1
REVIEW
Chao Zhong, Jinfang Zhu
Research on innate lymphoid cells (ILC) has recently been a fast paced topic of immunological research. As ILCs are able to produce signature Th cytokine, ILCs have garnered considerable attention and have been described to represent the innate counterpart of the CD4(+) T helper (Th) cells. The development and function of ILCs are precisely regulated by a network of crucial transcription factors, which are also involved in the development or differentiation of conventional natural killer (cNK) cells and T cells...
January 20, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28106824/identification-of-the-muc2-promoter-as-a-strong-promoter-for-intestinal-gene-expression-through-generation-of-transgenic-quail-expressing-gfp-in-gut-epithelial-cells
#2
Rachel M Woodfint, Paula R Chen, Jinsoo Ahn, Yeunsu Suh, Seongsoo Hwang, Sang Suk Lee, Kichoon Lee
Identification of tissue- and stage-specific gene promoters is valuable for delineating the functional roles of specific genes in genetically engineered animals. Here, through the comparison of gene expression in different tissues by analysis of a microarray database, the intestinal specificity of mucin 2 (MUC2) expression was identified in mice and humans, and further confirmed in chickens by RT-PCR (reverse transcription-PCR) analysis. An analysis of cis-acting elements in avian MUC2 gene promoters revealed conservation of binding sites, within a 2...
January 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28096407/development-of-chronic-allergic-responses-by-dampening-bcl6-mediated-suppressor-activity-in-memory-t-helper-2-cells
#3
Takashi Ogasawara, Masahiko Hatano, Hisae Satake, Jun Ikari, Toshibumi Taniguchi, Nobuhide Tsuruoka, Haruko Watanabe-Takano, Lisa Fujimura, Akemi Sakamoto, Hirokuni Hirata, Kumiya Sugiyama, Yasutsugu Fukushima, Susumu Nakae, Kenji Matsumoto, Hirohisa Saito, Takeshi Fukuda, Kazuhiro Kurasawa, Koichiro Tatsumi, Takeshi Tokuhisa, Masafumi Arima
Mice deficient in the transcriptional repressor B-cell CLL/lymphoma 6 (Bcl6) exhibit similar T helper 2 (TH2) immune responses as patients with allergic diseases. However, the molecular mechanisms underlying Bcl6-directed regulation of TH2 cytokine genes remain unclear. We identified multiple Bcl6/STAT binding sites (BSs) in TH2 cytokine gene loci. We found that Bcl6 is modestly associated with the BSs, and it had no significant effect on cytokine production in newly differentiated TH2 cells. Contrarily, in memory TH2 (mTH2) cells derived from adaptively transferred TH2 effectors, Bcl6 outcompeted STAT5 for binding to TH2 cytokine gene loci, particularly Interleukin4 (Il4) loci, and attenuated GATA binding protein 3 (GATA3) binding to highly conserved intron enhancer regions in mTH2 cells...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28092903/you-gata-look-at-the-marrow
#4
David Buchbinder, Aaron Sassoon
No abstract text is available yet for this article.
July 28, 2016: Blood
https://www.readbyqxmd.com/read/28091725/genetic-polymorphism-investigation-of-the-chinese-yi-minority-using-powerplex%C3%A2-y23-str-amplification-system
#5
GuangLin He, PengYu Chen, Xing Zou, Xu Chen, Feng Song, Jing Yan, YiPing Hou
Twenty-three Y-STR loci (DYS576, DYS389I, DYS389 II, DYS448, DYS19, DYS391, DYS481, DYS549, DYS533, DYS438, DYS437, DYS570, DYS635, DYS390, DYS439, DYS392, DYS393, DYS458 DYS456, DYS643, Y-GATA-H4, and DYS385a/b) included in the next-generation PowerPlex® Y23 System were first investigated in 311 unrelated, healthy male individuals from the Yi minority population residing in the Liangshan Yi Autonomous Prefecture, Sichuan, China. A total of 179 alleles and 297 haplotypes were discovered in the Yi group. In total, 285 haplotypes among them were unique, and the remaining 12 haplotypes were observed in two or three individuals...
January 16, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28077840/novel-gatad2b-loss-of-function-mutations-cause-intellectual-disability-in-two-unrelated-cases
#6
Xiaomei Luo, Yongyi Zou, Bo Tan, Yue Zhang, Jing Guo, Lanlan Zeng, Rui Zhang, Hu Tan, Xianda Wei, Yiqiao Hu, Yu Zheng, Desheng Liang, Lingqian Wu
GATA zinc finger domain-containing 2B (GATAD2B) is a subunit of the methyl-CpG-binding protein-1 complex (MECP1), which deacetylates methylated nucleosomes and regresses transcriptional activity. Recently, GATAD2B has been elucidated as a candidate gene in patients with intellectual disability (ID). In this study, we identified two novel heterozygous frameshift mutations of GATAD2B in two unrelated ID cases through next-generation sequencing (NGS). Both of the mutations c.80_81insGATGT and c.552_555delGAAA cause truncated proteins that might be detrimental to neurodevelopment...
January 12, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28076614/association-between-asthma-and-female-sex-hormones
#7
Raquel Prudente de Carvalho Baldaçara, Ivaldo Silva
CONTEXT AND OBJECTIVE: The relationship between sex hormones and asthma has been evaluated in several studies. The aim of this review article was to investigate the association between asthma and female sex hormones, under different conditions (premenstrual asthma, use of oral contraceptives, menopause, hormone replacement therapy and pregnancy). DESIGN AND SETTING: Narrative review of the medical literature, Universidade Federal do Tocantins (UFT) and Universidade Federal de São Paulo (Unifesp)...
January 5, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28072603/dyserythropoiesis-of-myelodysplastic-syndromes
#8
Carine Lefèvre, Sabrina Bondu, Salomé Le Goff, Olivier Kosmider, Michaela Fontenay
PURPOSE OF REVIEW: Myelodysplastic syndromes (MDS) are heterogeneous diseases of the hematopoietic stem cell in the elderly. Anemia is the main symptom that mostly correlates with dysplastic erythropoiesis in the bone marrow. We will review the recent advances in understanding the diverse mechanisms of dyserythropoiesis. RECENT FINDINGS: Dyserythropoiesis defined as 10% dysplastic erythroid cells in the bone marrow is found in more than 80% of early MDS. Immature erythroblasts accumulate at the expense of mature erythroblasts due to differentiation arrest and apoptosis...
January 7, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28071726/the-ppe2-protein-of-mycobacterium-tuberculosis-translocates-to-host-nucleus-and-inhibits-nitric-oxide-production
#9
Khalid Hussain Bhat, Shruti Srivastava, Sandeep Kumar Kotturu, Sudip Ghosh, Sangita Mukhopadhyay
Mycobacterium tuberculosis, the bacterium that causes tuberculosis, is one of the most successful pathogens of humans. It has evolved several adaptive skills and evasion mechanisms to hijack the immunologically educated host to suit its intracellular lifestyle. Here, we show that one of the unique PPE family member proteins of M. tuberculosis, PPE2, can limit nitric oxide (NO) production by inhibiting inos gene transcription. PPE2 protein has a leucine zipper DNA-binding motif and a functional nuclear localization signal...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070004/arthrocladium-fulminans-arthritis-and-osteomyelitis
#10
Abdoulahy Diallo, Céline Michaud, Souandou Tabibou, Maxime Raz, Carla Fernandez, Hubert Lepidi, Pierre-Edouard Fournier, Andreas Stein, Stéphane Ranque, Piseth Seng
Arthrocladium fulminans is the only species in the Arthrocladium genus that has been involved in a previous human infection. To date, only one case of A. fulminans infection in a patient with GATA-2 immunodeficiency has been reported. We here report the second human case and the first case of septic arthritis and osteomyelitis due to A. fulminans in an immunocompetent patient, living in Mayotte, a French island in western Indian Ocean. He was successfully treated with surgical debridement and 6 months of antifungal treatment...
January 9, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28057738/a-population-of-hematopoietic-stem-cells-derives-from-gata4-expressing-progenitors-located-in-the-placenta-and-lateral-mesoderm-of-mice
#11
Ana Cañete, Rita Carmona, Laura Ariza, Maria Jose Sanchez, Anabel Rojas, Ramon Muñoz-Chápuli
GATA transcription factors are expressed in mesoderm and endoderm during development. GATA1-3, but not GATA4, are critically involved in hematopoiesis. An enhancer (G2) of the mouse Gata4 gene directs its expression throughout the lateral mesoderm and the allantois, beginning at E7.5, becoming restricted to the septum transversum by E10.5, and disappearing by midgestation. We have studied the developmental fate of the G2-Gata4 cell lineage using a G2-Gata4Cre;R26REYFP mouse line. We found a substantial number of YFP+ hematopoietic cells of lymphoid, myeloid and erythroid lineages in embryos...
January 5, 2017: Haematologica
https://www.readbyqxmd.com/read/28053695/study-on-hydroxyurea-response-in-hemoglobinopathies-patients-using-genetic-markers-and-liquid-erythroid-cultures
#12
Serena Sclafani, Alice Pecoraro, Veronica Agrigento, Antonio Troia, Rosario Di Maggio, Massimiliano Sacco, Aurelio Maggio, Elena D'Alcamo, Rosalba Di Marzo
Increased expression of fetal hemoglobin (HbF) may ameliorate the clinical course of hemoglobinopathies. Hydroxyurea (HU) is the only inducer approved for the treatment of these diseases able to stimulate HbF production but patients' response is highly variable indicating the utility of the identification of pharmacogenomic biomarkers in order to predict pharmacological treatment efficacy. To date few studies to evaluate the role of genetic determinants in HU response have been conducted showing contradictory results...
November 2, 2016: Hematology Reports
https://www.readbyqxmd.com/read/28053620/establishment-of-a-surgically-induced-cryptorchidism-canine-recipient-model-for-spermatogonial-stem-cell-transplantation
#13
Won-Young Lee, Ran Lee, Hyuk Song, Tai-Young Hur, Seunghoon Lee, Jiyun Ahn, Hyunjhung Jhun
Transplantation of spermatogonial stem cells (SSCs) in experimental animal models has been used to study germ line stem cell biology and to produce transgenic animals. The species-specific recipient model preparation is important for the characterization of SSCs and the production of offspring. Here, we investigated the effects of surgically induced cryptorchidism in dog as a new recipient model for spermatogonial stem cell transplantation. Artificially unilateral or bilateral cryptorchidism was induced in ten mature male dogs by surgically returning the testis and epididymis to the abdominal cavity...
December 2016: Laboratory Animal Research
https://www.readbyqxmd.com/read/28053145/study-of-differential-expression-of-mirnas-in-lung-tissue-of-mice-submitted-to-experimental-infection-by-paracoccidioides-brasiliensis
#14
Denise Turini Gonzales Marioto, Ana Carolina Navarro Dos Santos Ferraro, Fábio Goulart de Andrade, Marília Barros Oliveira, Eiko Nakagawa Itano, Silvana Petrofeza, Emerson José Venancio
MicroRNAs (miRNAs) are small single stranded RNA sequences involved in post-transcriptional regulation of different biological and physiological processes. Paracoccidioidomycosis (PCM) is an infection caused by Paracoccidioides brasiliensis, and it is a major cause of mortality due to systemic mycoses in Brazil. To date, there have been few reports on the role of miRNAs in the immune response against fungi, especially PCM. The objective of this study was to evaluate the differential expression of miRNAs related to the inflammatory response associated with pulmonary infection by P...
January 3, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28052733/melanoma-induced-anemia-could-be-rescued-by-sca-1-mesenchymal-stromal-cells-in-mice
#15
Ning An, Yaozhen Chen, Dandan Yin, Hui-Jie Zhang, Zheng Liu, Fan Feng, Na Li, Jiajia Xin, Wen Yin, Xueqing Xu, Xingbin Hu
The intrinsic basis of cancer-related anemia (CRA) is erythropoiesis disorder, which is a common complication of cancer and exerts a negative influence on the life quality of cancer patients. Cell therapy using mesenchymal stromal cells (MSCs) is considered as a promising method in cancer treatment. Furthermore, MSCs have been used to cure few type of anemia and be considered as a potential strategy to recover anemia radically. However, none reports its application in CRA treatment. In CRA model mice, we found that the number of lin-c-kit+Sca-1+ (LSK) and Sca-1+ MSCs was decreased...
January 4, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28027951/mutation-of-area-affects-growth-sporulation-nitrogen-regulation-and-pathogenicity-in-colletotrichum-gloeosporioides
#16
Fangcheng Bi, Dana Ment, Neta Luria, Xiangchun Meng, Dov Prusky
The GATA transcription factor AreA is a global nitrogen regulator that restricts the utilization of complex and poor nitrogen sources in the presence of good nitrogen sources in microorganisms. In this study, we report the biological function of an AreA homolog (the CgareA gene) in the fruit postharvest pathogen Colletotrichum gloeosporioides. Targeted gene deletion mutants of areA exhibited significant reductions in vegetative growth, increases in conidia production, and slight decreases in conidial germination rates...
December 25, 2016: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28008415/quantitative-histological-image-analyses-of-reticulin-fibers-in-a-myelofibrotic-mouse
#17
Hector A Lucero, Shenia Patterson, Shinobu Matsuura, Katya Ravid
Bone marrow (BM) reticulin fibrosis (RF), revealed by silver staining of tissue sections, is associated with myeloproliferative neoplasms, while tools for quantitative assessment of reticulin deposition throughout a femur BM are still in need. Here, we present such a method, allowing via analysis of hundreds of composite images to identify a patchy nature of RF throughout the BM during disease progression in a mouse model of myelofibrosis. To this end, initial conversion of silver stained BM color images into binary images identified two limitations: variable color, owing to polychromatic staining of reticulin fibers, and variable background in different sections of the same batch, limiting application of the color deconvolution method, and use of constant threshold, respectively...
2016: Journal of Biological Methods
https://www.readbyqxmd.com/read/28007891/general-amino-acid-control-and-14-3-3-proteins-bmh1-2-are-required-for-nitrogen-catabolite-repression-sensitive-regulation-of-gln3-and-gat1-localization
#18
Jennifer J Tate, David Buford, Rajendra Rai, Terrance G Cooper
Nitrogen Catabolite Repression (NCR), the ability of Saccharomyces cerevisiae to utilize good nitrogen sources in preference to poor ones, derives from nitrogen-responsive regulation of the GATA family transcrip-tion activators Gln3 and Gat1. In nitrogen replete conditions the GATA factors are cytoplasmic and NCR-sensitive transcription minimal. When only poor nitrogen sources are available, Gln3 is nuclear dramatically in-creasing GATA factor-mediated transcription. This regulation was originally attributed to mTorC1-mediated control of Gln3...
December 22, 2016: Genetics
https://www.readbyqxmd.com/read/28007091/inhibition-effect-of-blunting-notch-signaling-on-food-allergy-through-improving-th1-th2-balance-in-mice
#19
Songsong Jiang, Shiwen Han, Jingyu Chen, Xuejiao Li, Huilian Che
BACKGROUND: Notch signaling regulates proliferation, differentiation, and function of dendritic cells, T cells, and mast cells, as well as many other immune cells, which act as important parts in food allergy, Notch signaling may play an important role in food allergy. OBJECTIVE: To investigate the role of Notch signaling in IgE-mediated food allergy. METHODS: An ovalbumin-induced food allergy mouse model was built (cholera toxin as adjuvant) and Notch signaling was blunted by FLI-06 and MW167, which inhibited Notch receptor-expressing phase and the γ-secretase-affecting phase, respectively...
January 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28006781/allogeneic-compact-bone-derived-mesenchymal-stem-cell-transplantation-attenuates-the-severity-of-idiopathic-pneumonia-syndrome-in-a-murine-bone-marrow-transplantation-model
#20
Shu-Kai Qiao, Han-Yun Ren, Yong-Jin Shi, Wei Liu
BACKGROUND/AIMS: Idiopathic pneumonia syndrome (IPS) is a serious and life-threatening lung complication following allogeneic hematopoietic stem cell transplantation (allo-HSCT) and currently no effective therapies exist. This study was designed to determine whether transplantation of allogeneic murine compact bone derived- mesenchymal stem cells (CB-MSCs) could prevent the development of IPS. METHODS: We tested the effects of CB-MSCs transplantation on IPS using an established murine model of C57BL/6 (H-2b)→BALB/c (H-2d)...
2016: Cellular Physiology and Biochemistry
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